CN100517202C - Ultrasonic writing pad having monitoring function for sitting posture - Google Patents
Ultrasonic writing pad having monitoring function for sitting posture Download PDFInfo
- Publication number
- CN100517202C CN100517202C CNB2006100034111A CN200610003411A CN100517202C CN 100517202 C CN100517202 C CN 100517202C CN B2006100034111 A CNB2006100034111 A CN B2006100034111A CN 200610003411 A CN200610003411 A CN 200610003411A CN 100517202 C CN100517202 C CN 100517202C
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- transmitter
- transducer
- writing
- handwriting pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
This invention relates to one ultrasound handwriting board with seat position monitor function, which adds one set of mechanic device without change of ultrasound test on the base of hand ultrasound board input function, wherein, the ultrasound exchange device can send or receive the wave along handwriting board direction or along front space of handwriting to receive the wave; using the principle and technique of handwriting to measure the isolate or relative position to realize seat position monitor.
Description
Technical field
The present invention relates to a kind of ultrasonic writing pad that can be used to monitor sitting posture when the user reads and writes, the expanded application that belongs to computing machine writing technology field is especially based on the application of measurement of coordinates technology on the daily health caring product of ultrasonic measuring distance technology.
Technical background
For the ordinary people, monitor the position of its head usually, whether the sitting posture in the time of just determining its read-write basically is good.And existing ultrasonic writing pad can only be used for the picture and text handwriting input of computing machine, as U.S. Pat 5283558, US6147681, number is the various technical schemes that are used for ultrasonic handwriting input that Chinese patents such as ZL98248471.2, ZL98101663.4, ZL00133388.7 are announced, and the technical scheme announced of Chinese patent application such as CN98101325.2, CN01144415.0, CN01140294.6, CN01140296.2, CN01140297.0, all there are not product and the technology that can attach monitoring function for sitting posture.According to the structure of writing pencil and the quantity of ultrasonic receiver (abbreviation receiver), its existing ultrasonic writing pad (abbreviation handwriting pad) can be divided into following several types:
First kind, 2 have line style, have ultrasonic transmitter (abbreviation transmitter) in the writing pencil, and receiving unit has two to receive only device, and ultrasound emission driving circuit and receiving unit are installed within the shell of handwriting pad together, are connected by lead with transmitter.
Second kind, 2 radio-types have transmitter and driving circuit thereof in the writing pencil, also have a general infrared transmission synchronizing circuit that uses, and are used for synchronized transmissions and reception, and receiving unit has two to receive only device, is installed within the shell of handwriting pad.
The third, 3 radio-types have transmitter and driving circuit thereof in the writing pencil, and receiving unit has three to receive only device, is installed within the shell of handwriting pad.
The 4th kind, wireless reflection-type, writing pencil nib part can reflection supersonic waves but are not had transmitter, even available finger replaces writing pencil, but lift pen start to write detecting unit or structure in the system, have two to receive only device and a transmitter in the shell.
Application number is that 200610002011.9 Chinese patent application discloses a kind of sitting posture surveillance technology scheme based on ultrasonic measuring distance technology, but does not have hand-write input function.Investigation belongs to the other products of culture and health treatment, existing be used to monitor even proofread and correct the sitting posture of students in middle and primary schools when reading and writing, prevent myopia and bad figure's health treatment, basically all be the product of physical construction, as be installed in collapsible gag lever post on the writing case etc.The electronic product that once occurred is the sitting posture watch-dog that hangs on user's ear.These product technologies or product all have use inconvenient, disperse shortcomings such as monitored person's energy, comfortableness be relatively poor easily, practicality is poor.
Summary of the invention
Purpose of the present invention, utilize the principle of ultrasonic measuring distance technology exactly, write wrench and write the basic function of input and do not increase basically on the basis of cost of products not influencing the hand ultrasound wave, a kind of technical scheme with ultrasonic writing pad affix monitoring function for sitting posture is disclosed, by the locus of monitored person's head is monitored, realize sitting posture monitoring purpose.
Investigate ultrasound wave respectively in this application mode aspect two of sitting posture monitoring and handwriting pad, can see that their ultimate principle is the same, the components and parts of use are also basic identical, so at four kinds of above-mentioned handwriting pads, the present invention has adopted following technical scheme:
The present invention includes a writing pencil, by one group of ultrasonic transducer and driving that is mated and signal Processing, lift pen start to write testing circuit, constitute the handwriting pad main body and the shell and the structural member of transducer be installed therein, and the handwriting pad that micro controller system constituted that is used to control total system work; Wherein ultrasonic transmitter can be installed in the writing pencil, also can be within the ultrasound wave receiving unit is installed in described shell; Its improvements are:
Also include the mechanical hook-up that a cover is used to change the direction of ultrasound examination on the described handwriting pad, make described transducer can or along the emission of handwriting pad writing plane direction or receive ultrasound wave; Perhaps in the space in handwriting pad the place ahead, launch ultrasound wave or reception ultrasound wave from this direction; A kind of in described mechanical hook-up or the following structure, described transducer is installed on this mechanical hook-up by described housing or structural member:
A. rotating shaft, ultrasonic transducer rotates the direction that transmits and receives that changes transducer around this rotating shaft;
B. one overlaps vacuum or magnetic suction disc, by being adsorbed on the direction that transmits and receives that changes transducer on the different surfaces;
C. one overlaps crooked slide rail, and ultrasonic transducer moves on slide rail and changes the direction that transducer is launched or received;
D. a cover sectional fixture by changing the position or the mode of clamping, changes the direction that transmits and receives of transducer;
Perhaps, a reflecting plate that reflection angle is variable in the place ahead of ultrasonic transducer, hyperacoustic direction that the reflection angle by the accommodation reflex plate changes described transducer emission or receives; Or the mixing of described various structures;
And, in the circuit of described handwriting pad, also include one and inform the unit with the caution that described micro controller system is connected by the I/O port; In the nonvolatile memory of described micro controller system, also store when handwriting pad and be used for sitting posture when monitoring, control ultrasonic transmitter and receiver gather ultrasound wave in time of spatial transmission, calculate the numerical value of the absolute or relative position of monitored person's head and need to judge whether the described caution of control inform the executable code module of unit action; And one group of position that is used for judging monitored person's head judgement reference value within the warning area of setting whether; Described executable code module is controlled its startup by a switch that is connected with described microcontroller.
Technique scheme can realize the detection of monitored person's head in two-dimensional space, actual needs can have been satisfied in some cases basically, but better technical scheme is the detection that realizes monitored person's the absolute or relative position of head in three dimensions, if and the head of further wishing monitored person is gone up or not subsidiary on one's body any accessory, realize the minimum cost target, then this system can also be adjusted into and penetrate device by riches all the way and add three tunnel three dimensions detection architecture that receiver constituted that are not located along the same line; Simultaneously, can also ultrasonic transducer replacement road receiver wherein of a transmit-receive sharing will be used.And newly-increased receiver, can also with a shared cover signal receiving processing circuit in other two prior receivers.Like this, when sitting posture monitors, just can break away from the constraint of writing pencil, bigger convenience and comfortableness is provided.
According to top description to technical scheme of the present invention as can be known, use certain the concrete technical scheme among the present invention, can be under the condition that increases the handwriting pad production cost hardly, the usable range of handwriting pad has been expanded to study health care aspect.
Description of drawings
Fig. 1: the synoptic diagram of the relation between basic handwriting pad and the geometry principle of the present invention
Fig. 2: two-dimensional space monitored area synoptic diagram
Fig. 3: the schematic side view of basic mounting structure example of the present invention
Fig. 4: the schematic side view of using sectional fixture or sucker that handwriting pad of the present invention is installed
Fig. 5: the schematic side view of using slide rail that ultrasonic writing pad of the present invention is installed
Fig. 6: the installation site schematic side view of ultrasonic reflections plate
Fig. 7: the scheme of installation of ultrasonic emitting source on hair clip or hair band
Fig. 8: the scheme of installation of ultrasound wave writing pencil on hair band or hair clip
Fig. 9: the scheme of installation of ultrasound wave writing pencil on the housing of receiver
Figure 10: a kind of general structure block scheme of Circuits System of the present invention
Figure 11: the schematic diagram that transducer is connected with circuit during a kind of ultrasonic transducer that uses transmit-receive sharing
Embodiment
At first the geometrical principle of monitored person being implemented to detect in two dimension or three dimensions of the present invention is described according to Fig. 1.In Fig. 1, the 101st, be sitting in the head of the monitored person on the chair 105 of desk 104 fronts, the 102nd, what ultrasonic writing pad was installed writes base plate or back up pad.When monitoring as sitting posture, the place ahead of monitored person's face is placed or be installed in to ultrasonic writing pad, because a kind of structure of the present invention needs monitored person's women's head-ornaments portion reflection supersonic wave, could realize the monitoring to its head position.Because other position of human body is good not as face amount portion to hyperacoustic reflection, so handwriting pad is placed on the place ahead of human body face amount portion among the present invention.XYZO is the reference frame of setting among the figure, some P
1(x
1, y
1, z
1), P
2(x
2, y
2, z
2) be two receivers on the former handwriting pad, these two receivers both can receive by writing pencil 103 launch or reflectance ultrasound wave launcher P
0(x
0, y
0, z
0) ultrasonic waves transmitted, also can receive reflection spot P (x, y, z) reflection transmitter P by monitored person's women's head-ornaments portion
0Institute's ultrasonic waves transmitted.If implement the detection of two dimension, handwriting pad for first and second kind structure before aforementioned, only need this two to receive only device and an emissive source gets final product: to allow receiver facing to monitored person, writing pencil is clamped on user's the hair clip or collar, even be inserted in the pocket of clothes top and allow transmitter be exposed, can both realize monitoring to a certain degree; For aforesaid the third handwriting pad, three receiver P are arranged
1, P
0And P
2And many distance D
0, but ultimate principle is identical, and detailed content can be with reference to aforesaid prior art, and its writing pencil can be used for monitoring with identical use-pattern with first and second kind equally.For the handwriting pad of the 4th kind of reflection configuration,, can realize above-mentioned monitoring function as long as allow transmitter also together towards monitored person.Fig. 2 has provided the synoptic diagram of the monitored area of implementing described two dimension monitoring.As we can see from the figure, if having only P
1And P
2Two receivers are so with P
1, P
2Distance equal D respectively
1And D
2The set of point, be one to pass through P
1And P
2Straight line be a circle 202 in the center of circle, when monitored person's sitting posture is bad, the movement locus when head is pressed close to desktop is also approximate is a circle 201, the zone of informing monitored person should be warned exactly in the dash area shown in the common factor part 203 of two circles and the zone on the right thereof.Set should the zone after, just can obtain D
1And D
2A perhaps set of the P coordinate figure of ordering, promptly aforesaid judgement reference value.
Like this, the position of monitored person's head can be absolute, promptly obtains the coordinate of monitored person's head position in reference frame XYZO by the solving equation group; Also can be relative, as D
1And D
2Value or transit time described below value.Still be that the three dimensions volume is used no matter, can utilize the numerical value of absolute or relative position to implement monitoring for two dimension.
Obtain the monitoring result of more perfect 3 D stereo if desired,, then need a newly-increased receiver on same straight line not, as the P among Fig. 1 for the handwriting pad of aforementioned first, second and the 4th kind of structure
m(x
m, y
m, z
m).If further wish subsidiary any accessory on monitored person's the head, and realize the minimum cost target, then this receiver should be the ultrasonic transducer of a transmit-receive sharing.Like this, then can cancel the P among Fig. 1
0, replace with P
mLike this, the velocity of sound of setting under the room temperature is v, is located at after transmitter launches ultrasound wave, by the some P of human body face amount portion reflection, then arrives each receiver, and the aerial transit time of ultrasound wave is respectively t
1, t
2, t
m, then can obtain following system of equations:
Find the solution this system of equations, can obtain one group of significant coordinate figure of a P position.If the handwriting pad of the third structure, then only need be with P
0Move to P
mThe position at place, and alternative with the transducer of transceiver, can get equifinality.This system of equations and handwriting pad are used to locate the system of equations of writing pencil to be compared, and its difference only is two dimension and three-dimensional difference, just needs the quantity difference of the unknown number of finding the solution, and the principle of its cartesian geometry is just the same.
The ultimate principle of introducing from above as can be known, one of the present invention to the effect that changes hyperacoustic that transmitter and receiver launch or receive, make described transducer can or along the emission of handwriting pad writing plane or receive ultrasound wave; Perhaps in the space in handwriting pad the place ahead, launch ultrasound wave or reception ultrasound wave from this direction.Fig. 3---Fig. 6 has provided the physical construction that realizes this purpose, and Fig. 3 gives in order to realize three-dimensional space when monitoring, and the 3rd receives only a kind of installation principle and the structure of device.The handwriting pad that is used as example among Fig. 3 is modal on the market, aforesaid second kind of handwriting pad.Among the figure, two receive only device 302 is installed among the housing 301 of handwriting pad, and housing is installed on the supporting baseplate 102 by the rotating shaft 305 on the support 304 of side end.When using as handwriting pad, 103 ultrasonic waves transmitted 312 of writing pencil are reflected to through reflection cone on the receiving plane of receiver, realize handwriting functions.When monitoring as sitting posture, with housing Rotate 180 ° around the shaft, receiver rotates to position 306 thereupon, and such two receive only device just can receive the ultrasound wave 313 of coming from the facial direction propagation of monitored person.The ultrasound wave here can be that the transmitter 307 that increases newly or writing pencil shown in Figure 9 are launched and by the ultrasound wave that monitored person's women's head-ornaments portion is reflected, and also can be subsequent figures 7, emissive source institute ultrasonic waves transmitted shown in Figure 8.
Handwriting pad at aforementioned first, second and third type, do not wear any emissive source to increase ease for use and comfortableness if do not wish monitored person, then can increase a transmitter 307, its driving circuit is installed within the shell of handwriting pad, and the two is connected by lead 311.Especially, included the ultrasonic emitting drive part in its housing, only needed, described newly-increased transmitter has been connected with described driving circuit with transmitter in the writing pencil by change-over switch and lead for first kind of handwriting pad that uses wired writing pencil; For example use with radio in the identical or similar edge connector of headset plug socket used always connect writing pencil, itself just includes change-over switch.Give the sectional view of a kind of installation example of this newly-increased transmitter among the figure: this transmitter and have the containment vessel 309 of rotating shaft 310 all is installed in the concave indentation 308 of the other end of supporting baseplate.If what install is the ultrasonic transducer of a transmitting-receiving dual-purpose, then be equivalent to increase again simultaneously No. one receiver; In order to reduce hardware cost, can with other two shared signal processing circuit passages that receive only in the device.Cooperate so again and go up corresponding control, software for calculation, just can realize the monitoring in the described three-dimensional space.
Fig. 4 provides is to use vacuum or magnetic chuck (to containing the supporting baseplate of ferrimagnet) 401, perhaps the example mounting structure of sectional fixture 402; The slide rail 501 that is to use bending that Fig. 5 provides and the example mount scheme of the slide block 502 on the housing.Fig. 6 provides is to use the installation example scheme of the variable reflecting plate 601 of reflection angle.The structure here all is only to the installation of handwriting pad itself, still can implement with reference to Fig. 3 for newly-increased transducer.
In addition, to and the switching of the present invention between " hand-written/monitoring " pattern, can use one with handwriting pad in hardware and certain datum V of micro controller system
RefThe switch 603 that is connected (only providing example in Fig. 6) is realized.Further mode is by certain structure 602, is following among Fig. 3-Fig. 6 the action of receiver and is controlling described switch; At this moment this switch can be selected a kind of in all polymorphic types such as magnetic control or stroke, photoelectricity, angle, pressure, switch for use.
Fig. 7 and Fig. 8 are a kind of technical schemes of wear-type, at the handwriting pad of aforementioned second kind of 2 radio-type.Used an annex among the figure---hair clip or hair band 701, and the other cover ultrasonic emitting driving circuit identical with circuit structure in the described writing pencil and the transmitter 702 of driving thereof are installed in the above.The structure of Fig. 8 example is a clip 801 to be installed writing pencil is installed on the hair band on hair clip or hair band.Because the power consumption of ultrasonic transmit circuit is very low, the button cell of several tens MAHs just can continuous working tens hours, and therefore photoelectric cell 703 can be installed on hair clip or hair band is that radiating circuit is powered.Certainly, when using writing pencil, on the writing pencil corresponding power supply interface to be arranged.
Fig. 9 then is at a kind of technical scheme handwriting pad of aforementioned second kind of 2 radio-type, that utilize monitored person's women's head-ornaments portion reflection supersonic wave.A draw-in groove 901 is set on the shell 301 of handwriting pad, and writing pencil is installed among this draw-in groove; On the surface near the infrared transmitter 903 of writing pencil on the housing 301, a cover and the former identical infrared receiver component 902 of the employed infrared receiver component of handwriting pad 904 that is used as are installed again.At this moment corresponding contact can also be set in draw-in groove and on the writing pencil, be that the writing pencil power supply is to save the battery in the writing pencil by handwriting pad.But receiving element 904 is not necessary, can utilize human body to come reflected infrared on the one hand, still receives by original receiving element 902; If on draw-in groove and writing pencil, be provided with contact on the other hand, so can by directly be electrically connected realize transmitting and receiving synchronously.
Figure 10 provides is a kind of system architecture block scheme of the mature technology scheme of the present invention, can thoroughly break away from the constraint of writing pencil, realizes the monitoring to monitored person's head absolute or relative position in three-dimensional space.Among the figure, receiver 1004,1005 and the signal processing circuit 1007,1008 that cooperates thereof; Infrared receiver component 1009 and signal processing circuit 1010 thereof, and the interface 1016 of counter unit 1012,1013, handwriting pad and the computing machine of micro controller system 1011 and inside thereof has constituted the basic structure that aforementioned second type handwriting pad signal Return Reception Dept. divides.Because that need utilize monitored person's head realizes the purpose of monitoring to hyperacoustic reflection, thus a transmitter 1001 and driving circuit 1002 thereof increased in the system, and Third Road receiver 1003.The Third Road receiver can be by by the shared cover signal processing channel of micro controller system 1011 control its switch 1006 and original receiver, as among the figure with receiver 1004 common circuits 1007.Under this structure, when need monitoring again, launches micro controller system twice ultrasound wave continuously: launch hyperacoustic reflection wave for the first time and be received device 1004,1005 receptions; The reflection wave of emission is received by 1003 for the second time.Certainly other combination is also passable.Because monitored person is when using monitoring function, should be sitting on the desk limit reading or write, remain static basically, therefore in twice emitting in the time interval of hyperacoustic a few tens of milliseconds, the displacement of head can be ignored fully, so this scheme is feasible.For aforesaid first kind, the handwriting pad of the third and the 4th type, still according to structure of modification shown in Figure 10, according to whether ultrasonic transmitting element being arranged, and original several each ultrasonic receiver and signal processing channel thereof, determine parts or unit that group will increase.In order to be implemented in the supervision of three-dimensional space, no matter the 3rd receive only that device increases newly or original, all should be able to be according to mode shown in Figure 3, be installed in or move to other two not on collinear position.Caution among the figure informs that no matter unit 1014 is for the embodiment shown in this figure, still aforementioned other technologies scheme all needs, wherein comprise sound, optical element and driving circuit thereof, as the combination of hummer or luminotron or this class component, do not meet at the reflected signal of monitored person's head and to send alarm signal when imposing a condition.Among the figure, the starting switch 603 of function for monitoring and a datum V
RefBe connected.For general microcontroller commonly used, V
RefUsually select power supply or ground level for use.
Figure 11 is the design to the further cost degradation of Figure 10, has used the ultrasonic transducer 1101 of a transmitting-receiving dual-purpose to substitute transmitter 1001 and receiver 1003 among Figure 10.Provided the example of an adaptation network among the figure, transducer 1101 by capacitance C after with by the reverse isolation clamp circuits 1102 that constitute of diode connected in parallel over the ground of damping resistance R and two, be connected with the input end of signal processing circuit 1103.If newly-increased transducer then also should include change-over switch 1006 in the signal processing circuit 1103.Though the isolation clamp circuit has been arranged, but for fear of in the emission ultrasonic pulse, causing output saturated, perhaps in a period of time that ultrasound wave is launched out, avoid the false triggering timer, can also in circuit, seal in disconnector 1104 by the I/O port controlling of my controller system, emission during ultrasound wave with the amplifier input terminal shorted to earth.If the output impedance of ultrasonic emitting driving circuit is lower,, can also insert the impedance isolated location 1105 that constitutes by two diodes that oppositely connect at the output terminal of emission driving circuit for fear of the impedance mismatching of transducer.
Because core content of the present invention still is range finding and position calculation, so in the code module that micro controller system 1011 is comprised, the code modules that is used for function for monitoring, its core content is identical with the original program structure of handwriting pad, a lot of contents can be general even simpler, if such as only using relative position to implement relatively to monitor, code that so just can omitted coordinate value calculating section.Xin Zeng part has only one group relatively to judge code fully, with the position of judging monitored person's head whether within the warning area of setting.Be used to realize the judgement reference value of described arbitration functions, can be according to Fig. 1 or principle shown in Figure 2, the some groups of numerical value of parameter settings such as average height according to user's age statistics obtains utilize the PC computing machine to select or import.Method is to utilize handwriting pad itself to measure to calculate more easily: under the correct situation of monitored person's sitting posture, utilize executable code control transducer to transmit and receive ultrasound wave, gather aforesaid transit time value, again relative position or coordinate figure by calculating monitored person's head; And then calculate the judgement reference value according to the rule of setting (whether meet can represent space equation that sitting posture is suitable or what shorten to just to be judged to be sitting posture improper as the coordinate figure of measuring) with the distance of transducer, store in the described nonvolatile memory.
The present invention mainly discloses and has utilized ultrasonic writing pad in two dimension or three dimensions, and the sitting posture when realization is read and write monitored person is implemented the ultimate principle of supervision and the example of some technical schemes.Can also design multiple enforceable technical scheme according to this principle, therefore on the basis of substance of the present invention, for simplification of the present invention, alternative, improvement, all within protection scope of the present invention.
Claims (10)
1. ultrasonic writing pad that has monitoring function for sitting posture, include a writing pencil, by one group of ultrasonic transducer and driving that is mated and signal Processing, lift pen start to write testing circuit, constitute the handwriting pad main body and the shell and the structural member of transducer be installed therein, and the handwriting pad that micro controller system constituted that is used to control total system work, wherein ultrasonic transmitter can be installed in the writing pencil, also can within being installed in described shell, the ultrasound wave receiving unit it is characterized in that:
Also include the mechanical hook-up that a cover is used to change the direction of ultrasound examination on the described handwriting pad, make described transducer can or along the emission of handwriting pad writing plane direction or receive ultrasound wave; Perhaps in the space in handwriting pad the place ahead, launch ultrasound wave or reception ultrasound wave from this direction; A kind of in described mechanical hook-up or the following structure, described transducer is installed on this mechanical hook-up by described housing or structural member:
A. rotating shaft, ultrasonic transducer rotates the direction that transmits and receives that changes transducer around this rotating shaft;
B. one overlaps vacuum or magnetic suction disc, by being adsorbed on the direction that transmits and receives that changes transducer on the different surfaces;
C. one overlaps crooked slide rail, and ultrasonic transducer moves on slide rail and changes the direction that transducer is launched or received;
D. a cover sectional fixture by changing the position or the mode of clamping, changes the direction that transmits and receives of transducer;
Perhaps, a reflecting plate that reflection angle is variable in the place ahead of ultrasonic transducer, hyperacoustic direction that the reflection angle by the accommodation reflex plate changes described transducer emission or receives; Or the mixing of described various structures;
And, in the circuit of described handwriting pad, also include one and inform the unit with the caution that described micro controller system is connected by the I/O port; In the nonvolatile memory of described micro controller system, also store when handwriting pad and be used for sitting posture when monitoring, control ultrasonic transmitter and receiver gather ultrasound wave in time of spatial transmission, calculate the numerical value of the absolute or relative position of monitored person's head and need to judge whether the described caution of control inform the executable code module of unit action; And one group of position that is used for judging monitored person's head judgement reference value within the warning area of setting whether; Described executable code module is controlled its startup by a switch that is connected with described microcontroller.
2. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: have two to receive only device and a transmitter in described one group of ultrasonic transducer, and transmitter and driving circuit thereof are installed among the writing pencil; In the same housing that described ultrasonic receiver is installed, ultrasonic transmitter and the driving circuit thereof of an other cover by described micro controller system control is installed also.
3. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: have two to receive only device and one and be installed in transmitter among the writing pencil in described one group of ultrasonic transducer, the driving circuit of transmitter is in the same housing that described ultrasonic receiver is installed; In the same housing that described ultrasonic receiver is installed, an other ultrasonic transmitter also is installed, described two transmitters are connected with described driving circuit by change-over switch and lead.
4. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: have two to receive only device and a transmitter in described one group of ultrasonic transducer, described writing pencil is a writing pencil that is used for reflection supersonic wave, transmitter in the described ultrasonic transducer and driving circuit thereof are installed within the same housing of described installation ultrasonic receiver.
5. according to claim 2 or 3, the 4 described ultrasonic writing pads that have monitoring function for sitting posture, it is characterized in that: be installed in ultrasonic transmitter in the same housing with described receiver, it is the ultrasonic transducer of a transmitting-receiving dual-purpose, an installation site of this transducer, with other described receiver not on same straight line; This transducer is connected with the output terminal of described ultrasonic emitting driving circuit, and by an isolation amplitude limit network, a change-over switch of being controlled by described micro controller system, with a shared cover signal processing circuit in other receiver in the handwriting pad; And be connected by the input end of shared signal processing circuit; In the code of described evaluation, include the code that calculates definitely three-dimensional or relative coordinate.
6. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: transmitter in the described ultrasonic transducer and driving circuit thereof are installed among the writing pencil; The other cover ultrasonic emitting driving circuit identical and the transmitter of driving thereof in described handwriting pad, also be equipped with circuit structure in the described writing pencil; This transmitter and driving circuit thereof are installed in a hair band or the hair clip.
7. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: transmitter in the described ultrasonic transducer and driving circuit thereof are installed among the writing pencil; Also be equipped with a hair band or hair clip in described handwriting pad, this hair band has a clip, and described writing pencil can be installed within the clip.
8. according to claim 6 or 7 described ultrasonic writing pads, it is characterized in that: on the surface of described hair band or hair clip solar cell is installed.
9. according to the described ultrasonic writing pad that has monitoring function for sitting posture of claim 1, it is characterized in that: have two to receive only device and a transmitter in described one group of ultrasonic transducer, and transmitter and driving circuit thereof are installed among the writing pencil; A draw-in groove is set on the shell of handwriting pad, and writing pencil is installed among this draw-in groove.
10. according to claim 6 or the 7 described ultrasonic writing pads that have monitoring function for sitting posture, it is characterized in that: in the ultrasonic transducer of described handwriting pad, except the driving and the signal processing circuit of two receivers and cooperation thereof are arranged, also have the 3rd to be installed in and described two to receive only device not on collinear position, and, overlap the ultrasonic receiver of signal processing circuit by a change-over switch shared of being controlled by described micro controller system with described two one of receiving only in the device; And in the code of described evaluation, include the code that calculates definitely three-dimensional or relative coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100034111A CN100517202C (en) | 2006-02-06 | 2006-02-06 | Ultrasonic writing pad having monitoring function for sitting posture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100034111A CN100517202C (en) | 2006-02-06 | 2006-02-06 | Ultrasonic writing pad having monitoring function for sitting posture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101017418A CN101017418A (en) | 2007-08-15 |
| CN100517202C true CN100517202C (en) | 2009-07-22 |
Family
ID=38726461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100034111A Expired - Fee Related CN100517202C (en) | 2006-02-06 | 2006-02-06 | Ultrasonic writing pad having monitoring function for sitting posture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100517202C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441496B (en) * | 2007-11-22 | 2010-12-08 | 英业达股份有限公司 | Portable computer and theft-proof method thereof |
| WO2022044236A1 (en) * | 2020-08-27 | 2022-03-03 | 日本電信電話株式会社 | Posture determination device, posture determination method, and program |
| CN113944494B (en) * | 2021-10-15 | 2024-01-12 | 太原理工大学 | Hydraulic support automatic alignment method and system based on ultrasonic wireless ranging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814552A (en) * | 1987-12-02 | 1989-03-21 | Xerox Corporation | Ultrasound position input device |
| US6147681A (en) * | 1998-05-14 | 2000-11-14 | Virtual Ink, Corp. | Detector for use in a transcription system |
-
2006
- 2006-02-06 CN CNB2006100034111A patent/CN100517202C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814552A (en) * | 1987-12-02 | 1989-03-21 | Xerox Corporation | Ultrasound position input device |
| US6147681A (en) * | 1998-05-14 | 2000-11-14 | Virtual Ink, Corp. | Detector for use in a transcription system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101017418A (en) | 2007-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xiao et al. | Comparison and analysis of indoor wireless positioning techniques | |
| KR102532286B1 (en) | Wireless probe, ultrasound imaging apparatus, and method for controlling thereof | |
| CN101366662A (en) | Multi-headed imaging probe and imaging system using same | |
| US20110242305A1 (en) | Immersive Multimedia Terminal | |
| CN100517202C (en) | Ultrasonic writing pad having monitoring function for sitting posture | |
| WO2007027706A3 (en) | Apparatus and system for measuring and communicating physical activity data | |
| AU2155495A (en) | Method and device for sensing of obstacles for an autonomous device | |
| GB2456773A (en) | Sensing the position of a mobile object relative to a fixed object via ultrasound and infrared | |
| WO2006127142A3 (en) | Free-hand three-dimensional ultrasound diagnostic imaging with position and angle determination sensors | |
| CN209149570U (en) | Receive head test device and system | |
| EP2847610A1 (en) | System and method for locating objects using radio frequency identifiers | |
| CN109528208A (en) | A kind of optics mixes motion capture system with inertia | |
| CN102202258A (en) | Mobile phone positioning system and positioning method thereof | |
| WO2004074861A3 (en) | Global acoustic positioning system and device | |
| US20070237029A1 (en) | Frequency matched relative position tracking system | |
| CN102961213A (en) | Blind person environment perception method and blind person environment perception system | |
| CN204889937U (en) | Oral cavity endoscope | |
| CN204302486U (en) | A kind of indoor locating system | |
| CN105738905A (en) | Indoor positioning system and method for reducing blind areas | |
| CN109917399A (en) | A kind of wireless fish deteclor and its system of more sonars | |
| CN202920467U (en) | Environmental perception system for blind person | |
| CN204256990U (en) | A kind of integral in-vehicle location probe based on two ultrasonic sensor | |
| CN103445758A (en) | Eyesight testing system based on wireless communication | |
| CN108957575A (en) | A kind of human body sensing device and its application method | |
| CN207380233U (en) | A kind of ultrasonic receiving device with catoptric arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING SECHI SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LIU ZHONGHUA Effective date: 20091225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091225 Address after: Room 2, unit 8, triumph building, Beiyuan Road, Chaoyang District, Beijing, Patentee after: Beijing Technology Co., Ltd. Chi Chi Address before: 7 unit 305# Beijing city Changping District Small Town Garden District Building 5 Patentee before: Liu Zhonghua |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100101 Beijing city Chaoyang District Datun Road Science Park in South Theo Street Center B block 601 Patentee after: Beijing Technology Co., Ltd. Chi Chi Address before: 100101, room 2, unit 8, triumph building, Beiyuan Road, Chaoyang District, Beijing, 903 Patentee before: Beijing Technology Co., Ltd. Chi Chi |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100094, 2 North Wing Road, Beijing, Haidian District, Tian Hua building, 2 floor Patentee after: Beijing Technology Co., Ltd. Chi Chi Address before: 100101 Beijing city Chaoyang District Datun Road Science Park in South Theo Street Center B block 601 Patentee before: Beijing Technology Co., Ltd. Chi Chi |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20140206 |