CN201732347U - Pressure detector of wireless digital pen - Google Patents
Pressure detector of wireless digital pen Download PDFInfo
- Publication number
- CN201732347U CN201732347U CN2010202566707U CN201020256670U CN201732347U CN 201732347 U CN201732347 U CN 201732347U CN 2010202566707 U CN2010202566707 U CN 2010202566707U CN 201020256670 U CN201020256670 U CN 201020256670U CN 201732347 U CN201732347 U CN 201732347U
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- pressure detection
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- digital pen
- wireless digital
- wireless
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Abstract
The utility model provides a pressure detector of a wireless digital pen, which comprises a hollow pen rod and a pen head, wherein the pen head comprises an upper end part and a lower end part, and in addition, the pen head is bias pressed so that the lower end part convexly extends from one end of the pen rod in the normal state. The pressure detector of the wireless digital pen comprises a circuit board, a pressure detection unit, a comparison voltage generation unit, an operation unit and a wireless emitting unit, wherein the circuit board is arranged in the pen rod near the pressure detection unit, the circuit board comprises a circuit installing surface, is vertical to the pen rod and is provided with two donductors, the pressure detection unit is arranged at the upper end part of the pen head, the partial comparison voltage generation unit comprises a charging and discharging circuit unit which is used for generating a comparison voltage signal, comparing the pressure voltage signal to the comparison voltage signal and generating a square wave signal, the operation unit calculates the width of the square wave signal to obtain a corresponding pressure value, and the wireless emitting unit is used for emitting the pressure value.
Description
Technical field
The utility model relates to a kind of pressure detection device of wireless digital pen, relates in particular to a kind of pressure detection device that also both can independently use the wireless digital pen that can use with the peripheral device collocation of digiboard or other sequencing.
Background technology
The use of computing machine is more prevalent, and the function of computing machine is also strengthened day by day, for the user of computing machine, wishes to have a kind of input media of convenient control cursor, therefore, for example digital tablet of input media, the digital pen device of convenient control cursor all enjoy attention day by day.
With the employed wired pen of conventional digital plate is example, built-in pressure detection device mainly utilizes the electric wire ways of connecting with digital pen in the wired pen, digiboard and pressure-sensing device are electrically connected to each other, and the circuit conversion on the digiboard and microcontroller calculate and obtain force value, prior art must be used and be wired to digital pen and digiboard, thereby make digital pen to use separately, often cause user's inconvenience, though as if general electromagnetic wireless pen force can solve the problem that electric wire connects, but because the employed magnetic induction of electromagnetic type wireless pressure pen can only be limited to the use on the electromagnetic type digiboard, still can't use in the digiboard of general non electromagnetic such as resistance-type or ultrasonic formula, in addition, above-mentioned electromagnetic wireless pen force is also because be subjected to other frequency interferences easily, thereby reduced the control precision of electromagnetic wireless pen force.
The utility model content
The purpose of this utility model is to provide a kind of pressure detection device of wireless digital pen, it utilizes simple circuit to obtain the pressure stable value, and take into account the stability of signal simultaneously and be not vulnerable to the interference of other frequency, therefore can reasonably produce reactive good wireless digital pen under the cost control.
Another purpose of the present utility model is to provide a kind of pressure detection device of wireless digital pen, and it can use separately, also can use with the collocation of digiboard or peripheral device, and it can provide X, Y, Z three axial detecting function simultaneously.
For achieving the above object, the utility model provides a kind of pressure detection device of wireless digital pen, it comprises a hollow penholder and a nib, and nib has a upper part and an end portion, and nib is subjected to bias voltage so that end portion protrudes out from an end of penholder normally.The pressure detection device of wireless digital pen includes a circuit board, a pressure detection unit, a comparison-voltage generation unit, an arithmetic element and a wireless transmitting unit.Wherein, circuit board is arranged in the penholder near place, pressure detection unit, circuit board has a circuit installation surface, it is perpendicular to penholder and be provided with two electric conductors, above-mentioned electric conductor is separate, wherein an electric conductor is coupled to an other end that is connected to positive supply resistance, and another electric conductor ground connection; The pressure detection unit is arranged at the upper part of nib, and the end portion of nib is when being pressed, the pressure detection unit contact with electric conductor so that a pressure voltage signal on the pressure detection unit; Comparison-voltage generation unit comprises one and charges and discharge circuit unit to produce a comparative voltage signal and pressure voltage signal and comparative voltage signal made comparisons and to produce a square-wave signal; Arithmetic element is calculated the width of square-wave signal to obtain a corresponding force value; Wireless transmitting unit then is used for sending force value.
Described pressure detection unit is made of conductive rubber, metal clips or metal dished cover.
This upper part of described pressure detection unit and this nib is formed in one.
The pressure detection device of described wireless digital pen also comprises: an antenna element, it is coupled to this wireless transmitting unit.
The pressure detection device of described wireless digital pen also comprises: a micro-control unit, it is coupled to above-mentioned this pressure detection unit, this comparison-voltage generation unit, this arithmetic element and this wireless transmitting unit.
Described wireless digital pen and peripheral device collocation are used.
Described peripheral device is digiboard, computing machine, programmable device or above-mentioned combination.
Described this peripheral device comprises: a processing unit; And a radio receiving unit, it is coupled to this processing unit, and receives this force value from this wireless digital pen.
The transmitting-receiving frequency range of described wireless transmitting unit is the ISM frequency band.
The transmitting-receiving frequency range of described radio receiving unit is the ISM frequency band.
The beneficial effects of the utility model are: the pressure detection device of the utility model wireless digital pen, it utilizes charge-discharge circuit the conductive rubber that vertically is installed on circuit board is discharged and recharged and carries out the comparison of signal, and after the variation that obtains square width, carry out computing to obtain corresponding force value, not only have the simple advantage of circuit, more can obtain the pressure stable value and be not easy to be subjected to the interference of other frequency.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effect apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the structural representation of wireless digital pen of the present utility model;
Fig. 2 is the structural representation of the pressure detection device of wireless digital pen of the present utility model;
Fig. 3 is the embodiment synoptic diagram of detecting wireless peripheral device that digital pen is applied to of the present utility model;
Fig. 4 is the start flow chart of steps of wireless digital pen of the present utility model;
Fig. 5 is applied to the embodiment synoptic diagram of digiboard and computing machine for wireless digital pen of the present utility model.
Embodiment
For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with preferred embodiment of the present utility model and accompanying drawing thereof.
As Fig. 1 and shown in Figure 2, wherein, Fig. 1 is the structural representation of the utility model wireless digital pen, and Fig. 2 then is the block schematic diagram of the pressure detection device of the utility model wireless digital pen, wherein, the pressure detection device is used for the pressure that presses of detecting wireless digital pen itself.
As shown in Figure 1, wireless digital pen 1 of the present utility model includes a hollow lever 10 and a nib 13, this nib 13 is installed in the hollow penholder 10 movably, and nib 13 end portion is subjected to a biasing device (not shown) control and protrudes out outside penholder 10 from an end of penholder 10 normally.
In more detail, have a pressure detection device in the wireless digital pen 1, as shown in Figure 2, this pressure detection device comprises a circuit board 12, a pressure detection unit 11, a comparison-voltage generation unit 16, an arithmetic element 15 and a wireless transmitting unit 14.Wherein, circuit board 12 is arranged in the penholder 10 near 11 places, pressure detection unit, circuit board 12 has a circuit installation surface 121, it is perpendicular to penholder 11 and be provided with two electric conductors 122,123, above-mentioned electric conductor 122,123 is separate, wherein an electric conductor 122 is coupled to an other end that is connected to positive supply resistance R 1, and another electric conductor 123 ground connection; Pressure detection unit 11 is arranged at the upper part of nib 13, and when the end portion of nib 13 is pressed, pressure detection unit 11 contact with electric conductor 122,123 so that a pressure voltage signal on pressure detection unit 11, electronic package with reality is an example, as shown in Figure 2, described pressure detection unit 11 includes comparer 111, frequency generator 112, control sluice 113 and counter 114; Comparison-voltage generation unit 16 comprises one and charges and discharge circuit unit 161 to produce a comparative voltage signal, and pressure voltage signal and comparative voltage signal made comparisons and produce a square-wave signal, simultaneously, have a counter control unit 162 in the comparison-voltage generation unit 16; Arithmetic element 15 is calculated the width of square-wave signal to obtain a corresponding force value; 14 of wireless transmitting unit are used for sending force value, and wherein above-mentioned wireless transmitting unit 14 can be a kind of radio frequency (RF) radiating circuit.
In addition, above-mentioned pressure detection device comprises an antenna element A1, and it is coupled to wireless transmitting unit 14.And the pressure detection device also comprises a micro-control unit (not shown), and it is coupled to above-mentioned pressure detection unit 11, comparison-voltage generation unit 16, arithmetic element 15 and wireless transmitting unit 14.
Wherein, above-mentioned pressure detection unit 11 can be made of conductive rubber, metal clips or metal dished cover (metaldome), the upper part of the pressure detection unit 11 in the present embodiment and nib 13 is member independently, certainly, pressure detection unit 11 more can be formed in one with the upper part of nib 13.
In addition, wireless digital pen 1 of the present utility model can be used with a peripheral device (not shown) collocation, described peripheral device can be digiboard, computing machine, programmable device or above-mentioned combination, and this peripheral device can receive the force value that wireless transmitting unit 14 is transferred out in the wireless digital pen 1.And as shown in Figure 3, block schematic diagram for the applied peripheral device of wireless digital pen of the present utility model, wherein said peripheral unit 2 (for example: computing machine or receiver) includes a processing unit 22, an and radio receiving unit 24, wherein, processing unit 22 can be microcontroller and can with a transport interface 26 (for example: the USB interface) couple, and data are able to by transport interface 26 being sent in the peripheral device 2, and radio receiving unit 24 can be respectively with an antenna element A2 and handle that unit 22 couple and in order to receive the force value of being sent out from wireless transmitting unit 14 in the wireless digital pen 1.With Fig. 3 is example, and above-mentioned peripheral device 2 can (for example: the programmable device) collocation be used, and for instance, peripheral device 3 can be the device of various programmables such as electric resistance touch-control digiboard, personal digital assistant with another peripheral device 3.More than discuss structure of the present utility model, will describe actual start flow process of the present utility model in detail in the mode of flow process below.
With the start of above-mentioned wireless digital pen 1, ask the while with reference to shown in Fig. 1-4 earlier, wherein Fig. 4 is the start steps flow chart of wireless digital pen, and it comprises step S01 to step S06.
At first, in step S01, earlier the counter 114 in the pressure detection unit in the wireless digital pen 1 11 is made zero.In step S02, then the voltage of capacitor C is reduced to zero then, and make the comparer 111 outputs one high voltage signal (Hi) in the pressure detection unit 11; Then in step S03, make the counter 114 in the pressure detection unit 11 begin to carry out counting; Then, in step S04, the positive pole of comparison-voltage generation unit 16 begins to detect, and the negative pole of comparison-voltage generation unit 16 is supplied a positive supply so that wireless digital pen 1 is done the work that discharges and recharges and obtained a comparative voltage signal, be that resistance R 3 begins capacitor C is charged, and after making 16 pairs of pressure voltage signals of comparison-voltage generation unit and comparative voltage signal relatively, obtain a square-wave signal; And, then enter to step S05 when the value of charging voltage during more than or equal to Vcc*R2/ (R1+R2), and at this moment, comparer 114 transitions in the pressure detection unit 11 and output LOW voltage signal (Lo); And in step S06, counter 114 stops counting, and arithmetic element 15 will count through wireless transmitting unit 14 force value that is obtained is sent out.
Above-mentioned in order to obtain different count values method can be by the resistance that changes variable resistor R2 to realize.For instance, when the contact of nib 13 end portions of wireless digital pen 1 has changed the pressure size that presses, then determined the area size of the electric conductor 122,123 on the pressure detection unit 11 contact circuit plates 12, also determined the size of pressure voltage signal simultaneously, and the resistance size of the variable resistor R2 shown in Fig. 2 changes along with the size of pressure voltage signal also.
At last, the example that is applied to digiboard and computing machine with wireless digital pen of the present utility model again is the example explanation.As shown in Figure 5, wireless digital pen 1 is with wireless mode and digiboard 2a, computing machine 2b links up, then be coupled to each other between digiboard 2a and the computing machine 2b in wired mode, therefore when wireless digital pen 1 is write on digiboard 2a, for wireless digital pen 1, it produces a force value, and for digiboard 2a, it produces a coordinate figure, wherein, the force value of wireless digital pen 1 sees through the mode of wireless transmission, and to be sent to computing machine (mode by wireless receiving receives force value), the coordinate figure of digiboard 2a then sees through the mode of wired transmission, to be sent to computing machine (mode by wired reception receives coordinate figure), therefore, after above-mentioned force value and coordinate figure all are sent to computing machine 2b, then can come cursor M start among the mobile computer 2b by received force value and coordinate figure; Above-mentioned example transmits force value and coordinate figure respectively, can certainly earlier force value and coordinate figure be integrated in advance, is sent in the lump in the computing machine 2b again.And the above-mentioned interface that is used to integrate can be interfaces commonly used such as RS232, SPI, IIC, PS2....
It should be noted that for above-mentioned wireless transmit or reception mechanism for avoiding the interference on the signal, the frequency range of wireless transmitting unit and radio receiving unit is utilized the ISM frequency band.
In sum, the pressure detection device of wireless digital pen of the present utility model, it utilizes charge-discharge circuit at right angle setting is discharged and recharged and carries out the comparison of signal in the conductive rubber of circuit board, and carry out afterwards computing to obtain corresponding force value in the variation that obtains square width, design not only has the simple advantage of circuit like this, more can obtain stable force value and is not easy to be subjected to the interference of other frequency. The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection domain of the utility model claim.
Claims (10)
1. the pressure detection device of a wireless digital pen, it is characterized in that, comprise a hollow penholder and a nib, this nib is located in this penholder movably and is had a upper part and an end portion, and this nib is subjected to bias voltage so that this end portion that should nib protrudes out from an end of this penholder normally, and the pressure detection device of this wireless digital pen comprises:
One circuit board is arranged in this penholder, and this circuit board has a circuit installation surface, this circuit installation surface is perpendicular to this penholder and be provided with two electric conductors, these electric conductors are separate, and wherein an electric conductor is coupled to an other end that is connected to positive supply resistance, and another electric conductor ground connection;
One pressure detection unit, it is arranged at this upper part of this nib, and end portion that should nib is when being pressed, this pressure detection unit contact with these electric conductors so that a pressure voltage signal on this pressure detection unit;
One comparison-voltage generation unit comprises one and charges and discharge circuit unit, and this charges and discharge that circuit unit produces a comparative voltage signal and this pressure voltage signal and this comparative voltage signal made comparisons and produces a square-wave signal;
One arithmetic element, the width that calculates this square-wave signal is to obtain a corresponding force value; And
One wireless transmitting unit sends this force value.
2. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that, this pressure detection unit is made of conductive rubber, metal clips or metal dished cover.
3. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that, this upper part of this pressure detection unit and this nib is formed in one.
4. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that it comprises:
One antenna element, it is coupled to this wireless transmitting unit.
5. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that it comprises:
One micro-control unit, it is coupled to above-mentioned this pressure detection unit, this comparison-voltage generation unit, this arithmetic element and this wireless transmitting unit.
6. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that, this wireless digital pen and peripheral device collocation are used.
7. the pressure detection device of wireless digital pen as claimed in claim 6 is characterized in that, this peripheral device is digiboard, computing machine, programmable device or above-mentioned combination.
8. the pressure detection device of wireless digital pen as claimed in claim 6 is characterized in that, this peripheral device comprises: a processing unit; And
One radio receiving unit, it is coupled to this processing unit, and receives this force value from this wireless digital pen.
9. the pressure detection device of wireless digital pen as claimed in claim 1 is characterized in that, the transmitting-receiving frequency range of this wireless transmitting unit is the ISM frequency band.
10. the pressure detection device of wireless digital pen as claimed in claim 8 is characterized in that, the transmitting-receiving frequency range of this radio receiving unit is the ISM frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202566707U CN201732347U (en) | 2010-07-13 | 2010-07-13 | Pressure detector of wireless digital pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202566707U CN201732347U (en) | 2010-07-13 | 2010-07-13 | Pressure detector of wireless digital pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732347U true CN201732347U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202566707U Expired - Lifetime CN201732347U (en) | 2010-07-13 | 2010-07-13 | Pressure detector of wireless digital pen |
Country Status (1)
| Country | Link |
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| CN (1) | CN201732347U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141848A (en) * | 2011-03-31 | 2011-08-03 | 友碁科技股份有限公司 | Pen type input device |
| CN103344361A (en) * | 2013-06-27 | 2013-10-09 | 浙江工业大学 | Measuring ejector pin mechanism of ball-point pen point integration measuring device |
| CN103364114A (en) * | 2013-06-27 | 2013-10-23 | 浙江工业大学 | Method for integrally measuring ball ejection force and axial gap of pen point of ball-point pen |
| CN106227372A (en) * | 2016-08-30 | 2016-12-14 | 上海升途智能系统有限公司 | A kind of true person's handwriting intelligent terminal's electromagnetism pressure sensi-tive pen pressure sensitivity device |
-
2010
- 2010-07-13 CN CN2010202566707U patent/CN201732347U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141848A (en) * | 2011-03-31 | 2011-08-03 | 友碁科技股份有限公司 | Pen type input device |
| CN102141848B (en) * | 2011-03-31 | 2013-10-30 | 友碁科技股份有限公司 | Pen type input device |
| CN103344361A (en) * | 2013-06-27 | 2013-10-09 | 浙江工业大学 | Measuring ejector pin mechanism of ball-point pen point integration measuring device |
| CN103364114A (en) * | 2013-06-27 | 2013-10-23 | 浙江工业大学 | Method for integrally measuring ball ejection force and axial gap of pen point of ball-point pen |
| CN103364114B (en) * | 2013-06-27 | 2015-03-04 | 浙江工业大学 | Method for integrally measuring ball ejection force and axial gap of pen point of ball-point pen |
| CN106227372A (en) * | 2016-08-30 | 2016-12-14 | 上海升途智能系统有限公司 | A kind of true person's handwriting intelligent terminal's electromagnetism pressure sensi-tive pen pressure sensitivity device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190102 Address after: Building 28, No. 4, Huaide Cuigang Industrial Park, Fuyong Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Huiwang Animation Technology Co.,Ltd. Address before: 9, 2nd Floor, 14th Lane 609, 5th Section of Renewal Road, Sanchong City, Taipei County, Taiwan, China Patentee before: Youqi Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |