CN104009745B - Resistive touch module and stringless musical instrument detection system - Google Patents
Resistive touch module and stringless musical instrument detection system Download PDFInfo
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- CN104009745B CN104009745B CN201410107001.6A CN201410107001A CN104009745B CN 104009745 B CN104009745 B CN 104009745B CN 201410107001 A CN201410107001 A CN 201410107001A CN 104009745 B CN104009745 B CN 104009745B
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
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Abstract
The invention provides a resistive touch module. The resistive touch module comprises a substrate, an input module, an output module and a touch detection circuit. The input module comprises a first power pin and an input pin. The output module comprises a second power pin, an output pin and a ground pin. The input end of the touch detection circuit is connected with the input pin, and the output end of the touch detection circuit is connected with the output pin. When the first power pin, the input pin and an external conductor form a closed loop through wires, the output pin of the output module becomes a first logic level; when the closed loop formed by the first power pin, the output pin and the external conductor through the wires is switched off, the output pin of the output module becomes a second logic level. According to the resistive touch module, a circuit of the resistive touch module rapidly responds to the input module, normal work of the circuit is guaranteed, and the response speed of the circuit is greatly increased.
Description
Technical field
The present invention relates to circuit field, more particularly, to a kind of resistive touch module and no string qin detecting system.
Background technology
At present, electronic product can realize its function by touch, and usually, circuit is to touch modules or touch screen or touch
The response speed of key is slower, therefore it cannot be guaranteed that the normal work of product.
Therefore, it is necessary to further be improved to prior art.
Content of the invention
It is an object of the present invention to provide a kind of resistive touch module.
Another object of the present invention is to providing one kind no string qin detection module.
For reaching one of object defined above, a kind of present invention resistive touch module, it includes：
Substrate；
It is installed on the input module on described substrate, it includes the first power pins and input pin, described first power supply
Pin and input pin can form closed-loop path by wire with external conductor；
It is installed on the output module on described substrate, it includes second source pin, output pin and grounding pin, institute
State output pin as the outfan of touch modules；
Be installed on the touch detection circuit on described substrate, its input is connected with described input pin, its outfan with
Described output pin is connected；
When described first power pins and input pin pass through wire with external conductor formation closed-loop path, described output
The output pin of module is changed into the first logic level, when described first power pins and input pin pass through wire and external conductor
When the closed-loop path being formed disconnects, the output pin of described output module is changed into the second logic level.
As one preferred embodiment of the present invention, described touch detection circuit include first resistor device, the first capacitor,
Second resistance device, 3rd resistor device, the 4th resistor, the first audion, the second audion, the 3rd audion, the 4th audion
And the 5th audion,
One end of described first resistor device as the input of described touch detection circuit, the other end of first resistor device with
One end of first capacitor is connected, the other end ground connection of the first capacitor；
The base stage of the first audion is connected with the intermediate node of first resistor device and the first capacitor, the collection of the first triode
Electrode is connected with power supply, and the emitter stage of the first audion is connected with the base stage of the second audion,
One end of second resistance device connects the colelctor electrode of the second audion, and the other end connects power supply, the sending out of the second audion
Emitter grounding,
One end of 3rd resistor device connects the colelctor electrode of the 3rd audion, and the other end connects power supply, the sending out of the 3rd audion
Emitter grounding, base stage connects the colelctor electrode of the second audion；
One end of 4th resistor connects the emitter stage of the 5th audion, and the other end connects power supply, the collection of the 5th audion
Electrode be grounded, the 5th audion as the outfan of described touch detection circuit,
The base stage of the 4th audion connects the colelctor electrode of the 3rd audion, and the colelctor electrode of the 4th audion connects the five or three pole
The base stage of pipe, the grounded emitter of the 4th audion.
As one preferred embodiment of the present invention, described first resistor device and the first capacitor form low-pass filtering electricity
Road；
Described first audion and the second audion composition darlington structure, described first audion, the second audion with
Second resistance device forms signal amplification circuit；
Described 3rd audion and 3rd resistor device composition voltage reversal amplifying circuit；
Described 4th audion, the 5th audion and the 4th resistor composition pressure limiting circuit；
When the first power pins and input pin pass through to produce input signal when wire forms closed-loop path with external conductor,
Within the cut-off frequency of input signal is limited in 24Hz by described low-pass filter circuit, described darlington structure circuit will input electricity
Stream is amplified so that the signal of described first outfan becomes big, and the signal from the first outfan output is passed through voltage reversal
Amplifier is reversely amplified, for described 4th audion and the 5th triode ON, when the base stage of described 4th audion
When voltage is more than blanking voltage, described output pin exports low level, when the base voltage of described 4th audion is less than cut-off
During voltage, described output pin exports high level, and now the first logic level is low level, and the second logic level is high level.
For reaching aforementioned another object, one kind of the present invention no string qin detecting system, it includes：Several are as claim 1-
3 arbitrary described touch modules, control and wireless sending module, receiver module and sounding module, each touch modules corresponds to
A kind of sound,
The input module of described touch modules is connected with described control and wireless sending module by wire, output module
Closed-loop path can be formed with external conductor by wire,
Whether described touch modules detection input module forms closed-loop path formation closed-loop path with external conductor, if inspection
Measure input module and form closed-loop path with external conductor, then send touch signal to described control module and wireless transmission mould
Described touch signal wireless transmission is gone out by block, described control and wireless sending module,
After described receiver module receives described touch signal, described sounding module is notified to send corresponding sound.
As one preferred embodiment of the present invention, wherein there are the first power pins of the input module of touch modules
It is connected with external conductor by wire, and this external conductor passes through the defeated of wire and the input module of any one touch modules
Enter pin to be connected, so that the touch modules that input pin is connected with external conductor send touch signal.
As one preferred embodiment of the present invention, described touch modules are seven, wherein, the of this seven touch modules
One power pins share a power supply.
As one preferred embodiment of the present invention, described receiver module is wireless receiving.
As one preferred embodiment of the present invention, described sounding module is speaker.
As one preferred embodiment of the present invention, described no string qin is a kind of musical instrument.
Beneficial effects of the present invention：Compared with prior art, resistive touch module of the present invention, its circuit is to input module
Response is fast, and can limit the cut-off frequency of input signal by low-pass filter circuit, can be made by signal amplification circuit
Small Current amplifier, not only ensure that the normal work of circuit, and the response speed of circuit is greatly improved.
Brief description
Fig. 1 is the structured flowchart of the touch modules of the present invention；
Fig. 2 is the structural representation of the touch modules connection external conductor of the present invention；
Fig. 3 is the testing circuit schematic diagram of inventive touch module；
Fig. 4 is the structured flowchart of the present invention no string qin detecting system.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings and specifically real
The present invention is further detailed explanation to apply mode.
" embodiment " or " embodiment " referred to herein refers to may be included at least one implementation of the present invention
Special characteristic, structure or characteristic." in one embodiment " that different places occur in this manual not refers both to same
Individual embodiment, is not single or optionally mutually exclusive with other embodiment embodiment.
Refer to Fig. 1, it is the structured flowchart of the touch modules of the present invention.Described touch modules 100 include substrate 101,
Input module 110, output module 120 and touch detection circuit 130.
Refer to Fig. 2, it is the structural representation of the touch modules connection external conductor of the present invention.Described input module
110 are installed on described substrate 101, and described input module 110 includes the first power pins 111 and input pin 112, and described
One power pins 111 and input pin 112 can form closed-loop path by wire with external conductor 200.
Described output module 120 is installed on described substrate 101, and described output module 120 includes second source pin
121st, output pin 122 and grounding pin 123, described output pin 122 is as the outfan of touch modules.
Described touch detection circuit 130 is installed on described substrate 101, the input of described touch detection circuit 130
It is connected with described input pin 112, the outfan of described touch detection circuit 130 is connected with described output pin 122.When described
When first power pins 111 and input pin 112 pass through wire with external conductor 200 formation closed-loop path, described output module
120 output pin 122 is changed into the first logic level, when described first power pins 111 and input pin 112 pass through wire with
When the closed-loop path that external conductor 200 is formed disconnects, the output pin 122 of described output module 120 is changed into the second logic level.
In the present invention, described conductor is the object that human body, fruit, metal etc. can be conductive.
Refer to Fig. 3, it is the testing circuit schematic diagram of inventive touch module.Described touch detection circuit includes first
Resistor R1, the first capacitor C1, second resistance device R2,3rd resistor device R3, the 4th resistor R4Q1, the first audion,
Two audion Q2, the 3rd audion Q3, the 4th audion Q4 and the 5th audion Q5.
One end of described first resistor device R1 as the input (IN) of described touch detection circuit, first resistor device R1
The other end is connected with one end of the first capacitor C1, the other end ground connection of the first capacitor C1.
The base stage of the first audion Q1 is connected with the intermediate node of first resistor device R1 and the first capacitor C1, the first three-level
The colelctor electrode of pipe Q1 is connected with power supply (VCC), and the emitter stage of the first audion Q1 is connected with the base stage of the second audion Q2.
The colelctor electrode of one end connection second audion Q2 of second resistance device R2, other end connection power supply (VCC), the two or three
The grounded emitter of pole pipe Q2.
The colelctor electrode of one end connection the 3rd audion Q3 of 3rd resistor device R3, other end connection power supply (VCC), the three or three
The grounded emitter of pole pipe Q3, base stage connects the colelctor electrode of the second audion Q2.
The emitter stage of one end connection the 5th audion Q5 of the 4th resistor R4, other end connection power supply (VCC), the five or three
The grounded collector of pole pipe Q5, the 5th audion Q5 is as the outfan of described touch detection circuit.
The base stage of the 4th audion Q4 connects the colelctor electrode of the 3rd audion Q3, and the colelctor electrode of the 4th audion Q4 connects the
The base stage of five or three pole Q5 pipes, the grounded emitter of the 4th audion Q4.
Described first resistor device R1 and the first capacitor C1 form low-pass filter circuit.So that conductor is as human body as a example, due to
Human body passes through input module 110 and the power frequency component of 50Hz can be introduced touch detection circuit 130, and touch detection circuit 130 is made
Become interference, so needing to add filter circuit.Input IN in described touch detection circuit 130（Input pin 112）Series connection
First resistor device R1 and the first capacitor C1 in parallel form typical RC filter circuit, and the cut-off frequency of input signal is limited in
It is ensured that the normal work of touch detection circuit 130 within 24Hz.
Described first audion Q1 and the second audion Q2 composition darlington structure, described first audion Q1, the two or three
Pole pipe Q2 forms signal amplification circuit with second resistance device R2.If the input pin 112 of input module 110 and the first power supply draw
Between foot 111 during the larger conductor of the resistance ratio such as water receiving fruit and human body, the electric current of input can very little, the first audion Q1 and second
The darlington structure of audion Q2 composition, can make the signal at the first outfan OUT1 sufficiently large small Current amplifier.
Described 3rd audion Q3 and 3rd resistor device R3 composition voltage reversal amplifying circuit.This voltage reversal amplifying circuit
First outfan OUT1 signals reverse is amplified, uses for the 4th audion Q4 and the 5th audion Q5 conducting.Due to the first electricity
The presence of container C1, leads to circuit response speed slack-off.When conductor leaves input pin 112 and the first power pins 111, the
One capacitor C1 to the first audion Q1 and the second audion Q2 electric discharge, due to the first audion Q1, the second audion Q2 and the
The amplification of three audion Q3 is so that the 4th audion Q4 and the 5th audion Q5 circuit can be in the first capacitor C1 voltages
Turn on immediately, thus improve the response speed of circuit after declining a bit.
Described 4th audion Q4, the 5th audion Q5 and the 4th resistor R4 composition pressure limiting circuit.If the four or three pole
The base voltage of pipe Q4 is more than blanking voltage, output pin 122（At OUT in Fig. 3）Output low level, if less than cut-off electricity
Pressure, exports high level, the working region of audion is limited at 0 volt between blanking voltage.Circuit is to input IN（Input is drawn
Foot 112）Have response quickly.
As shown in Figures 2 and 3, the principle of inventive touch testing circuit is as follows：When the first power supply of input module 110 draws
Foot 111 and input pin 112 pass through wire and form generation input signal, described low pass filtered during closed-loop path with external conductor 200
Within the cut-off frequency of input signal is limited in 24Hz by wave circuit, input current is put by described darlington structure circuit
Greatly so that the signal of described first outfan OUT1 becomes big, the signal from the first outfan OUT1 output is passed through voltage reversal
Amplifier is reversely amplified, for described 4th audion Q4 and the 5th audion Q5 conducting, as described 4th audion Q4
Base voltage be more than blanking voltage when, the output pin 122 of described output module 120（OUT in Fig. 3）Output low level,
When the base voltage of described 4th audion Q4 is less than blanking voltage, the output pin 122 of described output module 120（In Fig. 3
OUT）Output high level, now the first logic level is low level, and the second logic level is high level.
In one embodiment, the touch modules of the present invention can be used in the detection part of no string qin.Refer to Fig. 4, its
Structured flowchart for no string qin detecting system in the present invention.Described no string qin detecting system includes several above-mentioned touch modules
100th, control and wireless sending module 300, receiver module 400 and sounding module 500, each touch modules 100 is corresponding a kind of
Sound.
The input module 110 of described touch modules 100 is passed through wire and is connected with described control and wireless sending module 300
Connect, whether described touch modules 100 detection input module 110 forms closed-loop path with external conductor, if input mould is detected
Block 110 forms closed-loop path with external conductor, then send touch signal and control and wireless sending module 300 to described, described control
Described touch signal wireless transmission is gone out by system and wireless sending module 300, and described receiver module 400 receives described touch to be believed
After number, described sounding module 500 is notified to send corresponding sound.
The first power pins wherein having the input module of touch modules are connected with external conductor by wire, and
This external conductor is connected with the input pin of the input module of any one touch modules by wire, so that input pin
The touch modules being connected with external conductor send touch signal.In this embodiment, described no string qin is a kind of musical instrument, described tactile
Touching module 100 has seven, and each touch modules 100 corresponds to a kind of sound, wherein, the first power supply of this seven touch modules 100
Pin 111 shares a power supply.For example, when handss of people contact the first power pins 111, another handss contact input pin
During any one in 112, corresponding touch modules 100 can export low electricity by the output pin 122 of its output module 120
Flat, described control and wireless sending module 300 low level is detected after send a signal to described receiver module 400, described connect
Receive and control sounding module 500 to send corresponding sound after module 400 receives signal.In this embodiment, described receiver module 400
For wireless receiving.Described sounding module 500 is speaker.In other embodiments, described sounding module 500 can also be other
Audible device.
In the present invention, seven input pins 112 are touched by definition, sends one of 7 notes sound respectively, thus
Interesting to listen to song can be played out.
The resistive touch module of the present invention, its circuit is fast to input module response, and passes through low-pass filter circuit energy
Enough limit the cut-off frequency of input signal, small Current amplifier can be made by signal amplification circuit, not only ensure that circuit
Normal work, and the response speed of circuit is greatly improved.
Described above has fully disclosed the specific embodiment of the present invention.It is pointed out that being familiar with this field
Any change that technical staff is done to the specific embodiment of the present invention is all without departing from the scope of claims of the present invention.
Correspondingly, the scope of the claim of the present invention is also not limited only to previous embodiment.
Claims (8)
1. a kind of resistive touch module it is characterised in that：It includes：
Substrate；
It is installed on the input module on described substrate, it includes the first power pins and input pin, described first power pins
Closed-loop path can be formed with external conductor by wire with input pin；
It is installed on the output module on described substrate, it includes second source pin, output pin and grounding pin, described defeated
Go out pin as the outfan of touch modules；
Be installed on the touch detection circuit on described substrate, its input is connected with described input pin, its outfan with described
Output pin is connected；
When described first power pins and input pin pass through wire with external conductor formation closed-loop path, described output module
Output pin be changed into the first logic level, when described first power pins and input pin are formed with external conductor by wire
Closed-loop path disconnect when, the output pin of described output module is changed into the second logic level,
Described touch detection circuit includes first resistor device, the first capacitor, second resistance device, 3rd resistor device, the 4th resistance
Device, the first audion, the second audion, the 3rd audion, the 4th audion and the 5th audion, described first resistor device
One end is connected with one end of the first capacitor as the input of described touch detection circuit, the other end of first resistor device, the
The other end ground connection of one capacitor；
The base stage of the first audion is connected with the intermediate node of first resistor device and the first capacitor, the colelctor electrode of the first triode
It is connected with power supply, the emitter stage of the first audion is connected with the base stage of the second audion, one end of second resistance device connects second
The colelctor electrode of audion, the other end connects power supply, the grounded emitter of the second audion, and one end of 3rd resistor device connects the 3rd
The colelctor electrode of audion, the other end connects power supply, the grounded emitter of the 3rd audion, and base stage connects the current collection of the second audion
Pole；
One end of 4th resistor connects the emitter stage of the 5th audion, and the other end connects power supply, the colelctor electrode of the 5th audion
Ground connection, the emitter stage of the 5th audion connects the 3rd as the outfan of described touch detection circuit, the base stage of the 4th audion
The colelctor electrode of audion, the colelctor electrode of the 4th audion connects the base stage of the 5th audion, the grounded emitter of the 4th audion.
2. resistive touch module according to claim 1 it is characterised in that：
Described first resistor device and the first capacitor form low-pass filter circuit；
Described first audion and the second audion composition darlington structure, described first audion, the second audion and second
Resistor forms signal amplification circuit；
Described 3rd audion and 3rd resistor device composition voltage reversal amplifying circuit；
Described 4th audion, the 5th audion and the 4th resistor composition pressure limiting circuit；
When the first power pins and input pin pass through to produce input signal when wire forms closed-loop path with external conductor, described
Within the cut-off frequency of input signal is limited in 24Hz by low-pass filter circuit, input current is entered by described darlington structure circuit
Row amplifies so that the signal of the first outfan becomes big, and the signal from the first outfan output is entered by voltage reversal amplifier
Row reversely amplifies, for described 4th audion and the 5th triode ON, when the base voltage of described 4th audion is more than
During blanking voltage, described output pin exports low level, when the base voltage of described 4th audion is less than blanking voltage, institute
State output pin output high level, now the first logic level is low level, and the second logic level is high level.
3. one kind no string qin detecting system it is characterised in that：It includes：Several described touches as arbitrary in claim 1-2
Module, control and wireless sending module, receiver module and sounding module, each touch modules corresponds to a kind of sound, described tactile
The input module touching module passes through to lead at least through the touch detection circuit of touch modules and the output module of touch modules again
Line is connected with described control and wireless sending module, and input module can form closed-loop path by wire with external conductor,
Whether described touch modules detection input module forms closed-loop path with external conductor, if input module is detected led with outside
Body forms closed-loop path, then send touch signal and control and wireless sending module, described control and wireless sending module to described
Described touch signal wireless transmission is gone out, after described receiver module receives described touch signal, notifies described sounding module
Send corresponding sound.
4. no string qin detecting system according to claim 3 it is characterised in that：Wherein there is the input mould of touch modules
First power pins of block are connected with external conductor by wire, and this external conductor passes through wire and touches mould with any one
The input pin of the input module of block is connected, so that the touch modules that input pin is connected with external conductor send touch letter
Number.
5. no string qin detecting system according to claim 3 it is characterised in that：Described touch modules are seven, wherein, should
First power pins of seven touch modules share a power supply.
6. no string qin detecting system according to claim 3 it is characterised in that：Described receiver module is wireless receiving.
7. no string qin detecting system according to claim 3 it is characterised in that：Described sounding module is speaker.
8. no string qin detecting system according to claim 3 it is characterised in that：Described no string qin is a kind of musical instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107001.6A CN104009745B (en) | 2014-03-21 | 2014-03-21 | Resistive touch module and stringless musical instrument detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410107001.6A CN104009745B (en) | 2014-03-21 | 2014-03-21 | Resistive touch module and stringless musical instrument detection system |
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| Publication Number | Publication Date |
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| CN104009745A CN104009745A (en) | 2014-08-27 |
| CN104009745B true CN104009745B (en) | 2017-02-22 |
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| CN201410107001.6A Expired - Fee Related CN104009745B (en) | 2014-03-21 | 2014-03-21 | Resistive touch module and stringless musical instrument detection system |
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| CN203444459U (en) * | 2013-07-16 | 2014-02-19 | 上海科世达-华阳汽车电器有限公司 | Novel multi-point resistive touch screen, detection circuit and switching device |
| CN203775180U (en) * | 2014-03-21 | 2014-08-13 | 无锡爱睿芯电子有限公司 | Resistance-type touch module and non-stringed musical instrument detecting system |
-
2014
- 2014-03-21 CN CN201410107001.6A patent/CN104009745B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0183742B1 (en) * | 1984-05-23 | 1991-01-02 | SJOBERG, Lars Ake | Electronic switch |
| CN101937674A (en) * | 2009-06-30 | 2011-01-05 | 上海电机学院 | Chord-free harp |
| CN102435823A (en) * | 2011-09-28 | 2012-05-02 | 刘喆 | High-performance induction type electroscope |
| CN102445651A (en) * | 2011-09-28 | 2012-05-09 | 青岛海信移动通信技术股份有限公司 | Device for testing touch screen functional circuit on circuit board |
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| Title |
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| "DIY Resistance Touch Button";Giorgos Lazaridis;《http://pcbheaven.com/circuitpages/Resistance_Touch_Button/》;20110113;第1页电路原理图，第2页第1-2段，实际电路照片 * |
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| CN104009745A (en) | 2014-08-27 |
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