WO2014121501A1 - Procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge - Google Patents

Procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge Download PDF

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Publication number
WO2014121501A1
WO2014121501A1 PCT/CN2013/071539 CN2013071539W WO2014121501A1 WO 2014121501 A1 WO2014121501 A1 WO 2014121501A1 CN 2013071539 W CN2013071539 W CN 2013071539W WO 2014121501 A1 WO2014121501 A1 WO 2014121501A1
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WO
WIPO (PCT)
Prior art keywords
infrared
unit
receiving
touch screen
sensitive
Prior art date
Application number
PCT/CN2013/071539
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English (en)
Chinese (zh)
Inventor
刘卫
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深圳富创通科技有限公司
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Publication date
Application filed by 深圳富创通科技有限公司 filed Critical 深圳富创通科技有限公司
Priority to PCT/CN2013/071539 priority Critical patent/WO2014121501A1/fr
Priority to CN201380003131.9A priority patent/CN104115104A/zh
Publication of WO2014121501A1 publication Critical patent/WO2014121501A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means

Definitions

  • the invention relates to an infrared touch screen, in particular to an implementation method of an infrared light sensitive touch screen based on infrared light.
  • Infrared touch screen is using X, Y An infrared matrix densely directional to detect and locate the user's touch device.
  • the infrared touch screen is provided with a circuit board outer frame on the front side of the display, and the circuit board arranges an infrared transmitting tube and an infrared receiving tube on four sides of the screen, and one-to-one correspondingly forms an infrared matrix which is horizontally and vertically crossed.
  • the finger blocks the two infrared rays passing through the position, so that the touch point can be judged on the screen.
  • X, Y coordinates When the user touches the screen, the finger blocks the two infrared rays passing through the position, so that the touch point can be judged on the screen.
  • the infrared receiving tube is further divided into an infrared photo transistor and an infrared photodiode.
  • the signal output from the receiving and selecting unit is a modulated signal, which is first converted into a DC signal through a demodulation circuit module, and then amplified by an amplifying circuit to a convenient collection. level. Due to the need to demodulate the signal, a more complicated demodulation circuit is used in the circuit, so that these circuits introduce a large delay, resulting in slow signal response and limited acquisition speed. Multi-touch screens generally need to collect more signals for calculation, and the scheme has a slower acquisition speed, which makes the scheme unable to adapt to multi-touch screen projects.
  • the existing infrared touch screen is only applied to a small-sized single-point touch screen, and the infrared receiving tube in the infrared multi-touch screen uses an infrared photodiode.
  • the infrared photodiode has a poor ability to sense light, that is, the current changes from no emission to when there is emission, so the current signal needs to be changed to a voltage signal.
  • a resistor is required in the vicinity of each receiving diode.
  • the voltage signal is transmitted, it is necessary to use a pull-down resistor for each receiving tube to ensure that it is at a stable low level without illumination, that is, the signal modulation conversion circuit has to be placed nearby, which leads to the need to utilize more of the technical solution.
  • Logic devices and analog devices make the circuit complex and costly to implement, and an increase in the number of devices may also cause an increase in the failure rate.
  • the invention provides an implementation method of an infrared photosensitive screen based on infrared light sensing, which can simplify the circuit and reduce the cost while ensuring the response speed.
  • the infrared light-sensitive infrared touch screen comprises an infrared emitting unit, an infrared receiving unit, an amplifying unit, a power source and an MCU a processor, wherein the power supply provides power to the infrared transmitting unit and the infrared receiving unit;
  • the infrared receiving unit comprises a receiving and selecting unit and a receiving tube array unit, wherein the receiving tube array unit is provided with infrared light sensing Transistor, including the following steps:
  • the infrared receiving unit receives a signal, performs signal amplification by the amplifying unit, and sends the signal to the MCU
  • the processor performs sampling processing, and the MCU processor performs sampling processing by using a single pulse sampling manner
  • the MCU processor controls timing of the infrared transmitting unit and the infrared receiving unit.
  • sampling is performed before the signal of the infrared phototransistor reaches a steady state.
  • the above-mentioned infrared emitting unit performs infrared ray emission after increasing the transmission power of the infrared transmitting tube, that is, it uses an ordinary higher power for transmitting an external line.
  • the above MCU processor uses an adaptive algorithm to algorithmically correct the discriminant threshold of the infrared phototransistor.
  • the above-mentioned receiving tube array unit adopts a matrix layout.
  • the receiving and addressing unit includes a control circuit module for controlling a row signal in the receiving tube array unit and a gate circuit module for gating a column signal in the receiving tube array unit.
  • control circuit module is a chip of the type 74XX138.
  • the gating circuit module described above is a chip of the type 74XX4051.
  • the above amplifying unit uses a primary to secondary operational amplifier and uses a dual power operational amplifier chip.
  • the technical solution disclosed in the application of the present invention does not require a demodulation circuit, and has the advantages of simple circuit and short response time. Significantly reduces costs and reduces the probability of hardware failure.
  • the single-pulse acquisition method is adopted, and the acquisition speed is also improved, which can be adapted to the requirements of multi-point speed.
  • FIG. 1 is a structural block diagram of an infrared touch screen of the present invention
  • FIG. 2 is a schematic view of a receiving tube array unit of the present invention
  • FIG. 3 is a schematic diagram of a control circuit module for receiving a location unit according to the present invention.
  • FIG. 4 is a schematic diagram of a gating circuit module of a receiving address unit according to the present invention.
  • Figure 5 is a circuit diagram of an amplifying unit of the present invention.
  • Figure 6 is a process flow diagram of the present invention.
  • FIG. 7 is a schematic diagram of processing of a timer of the present invention.
  • FIG. 8 is a waveform diagram of the signal of the present invention after being amplified by a unit.
  • the invention discloses an implementation method of an infrared photosensitive screen based on infrared light sensing, wherein, referring to FIG. 1 As shown, the infrared light-sensitive infrared touch screen includes an infrared emitting unit 1, an infrared receiving unit 2, an amplifying unit 3, a power source 4, and an MCU processor 5, wherein:
  • the power supply 4 provides power to the infrared transmitting unit 1 and the infrared receiving unit 2; the entire system is USB from the PC The interface is powered, the USB interface supply voltage is 5V, and the maximum supply current is 500mA.
  • Infrared transmitting unit 1 , infrared receiving unit 2 is directly used 5V power supply; MCU processor 5 Using a 3.3V power supply, therefore, using the LDO circuit module 6 converts the 5V voltage of the USB interface to 3.3V to accommodate the needs of the MCU processor 5 chip.
  • the infrared emitting unit 1 includes a transmitting and selecting unit 11 and a transmitting tube array unit 12, and a transmitting tube array unit.
  • the launch tube is provided on the 12th.
  • the infrared emitting unit 1 performs the infrared emission after increasing the transmitting power of the infrared transmitting tube, that is, it uses the higher power than the conventional one to perform the external line emission. After this adjustment, the power consumption of the whole machine is controlled at 200 ⁇ 300mA, and the maximum current that the USB interface can provide is 500mA. , within the available range.
  • the infrared phototransistor has a short response speed.
  • the MCU processor 5 is used to control the timing of the infrared transmitting unit 1 and the infrared receiving unit 2; in specific implementation, the MCU Processor 5 uses a 32-bit high-performance processor model STM32F103C8 that runs all control logic and data processing algorithms. MCU The processor controls the timing of the infrared transmitting array by controlling the transmitting addressing circuit; and the MCU controls the timing of the infrared receiving array by controlling the receiving addressing circuit. Receive signal to MCU sample processing, MCU After sampling all the lamps, the arithmetic algorithm is processed centrally, and the touch coordinates are calculated and sent to the PC via USB.
  • the infrared receiving unit 2 includes a receiving and selecting unit 21 and a receiving tube array unit 22, and a receiving tube array unit 22 An infrared phototransistor is provided thereon.
  • the receiving tube array unit 22 adopts a matrix layout, and may be adopted according to the size of the touch screen. 8X8 array or 8X12 array.
  • the advantage of this layout is that there are fewer control lines.
  • the 8X8 array only needs 16 pins to control 64.
  • the signal acquisition of one receiving tube; the control is also relatively simple, for example, the first line of control line is set high, the other line control lines are set low, and then the first column is strobed for acquisition, and the first receiving tube in the upper left of Fig. 2 is collected. signal of.
  • the receiving tube array unit 22 of the present invention compared with the existing array of photodiodes, the required components are reduced, and the circuit is simple.
  • the receiving location unit 21 includes a pair of receiving tube array units 22
  • the control circuit module for controlling the row signal and the gate circuit module for gating the column signal in the receiving tube array unit 22.
  • the control circuit module controls the line signals in the receiving tube array unit 22.
  • it uses a piece 74XX138 chip, ie 3-8 decoder, when the address input (A/B/C) of the decoder is 000, the output of chip Y0 is low, other Y1-Y7 The output is high so that the first row of the receive tube array unit 22 can be enabled.
  • the gate circuit module gates the column signals in the receiver array unit 22.
  • it is a piece 74XX4051, the analog selector.
  • the address selection input (A/B/C) input of the chip is 000
  • the first channel is gated, that is, the X0 pin is transmitted to X. Pin.
  • the signal passes through the amplification unit (demodulation unit), it enters the MCU unit for sampling.
  • the receiving and locating unit 21 in the application of the present invention uses an analog selector with the existing diode, and uses 9 pieces of 74XX4051. Compared with the two-stage voltage selection circuit, the receiving address unit of the present invention is simple to sample, and avoids the need for a considerable number of 74XX4051 chips as in the conventional diode scheme.
  • the amplification unit 3 uses a primary to secondary op amp and uses a dual power op amp chip.
  • it is modeled as The chip of the LM828, which is a negative power chip, provides negative voltage for the op amp chip.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the invention is An infrared light-sensitive infrared touch screen implementation method adopts the infrared light-sensitive infrared touch screen disclosed above, which comprises the following steps:
  • the infrared light is received by the infrared phototransistor of the infrared receiving unit 2, and the infrared receiving unit 2 receives the signal and passes through the amplifying unit 3
  • the signal is amplified and sent to the MCU processor 5 for sampling processing, and the MCU processor 5 uses a single pulse sampling method for sampling processing; a single pulse sampling method is adopted.
  • the MCU processor 5 controls the timing of the infrared transmitting unit 1 and the infrared receiving unit 2.
  • the MCU processor 5 After powering up the system, the MCU processor 5 The control program in the middle begins to execute, and the control program first performs system initialization, that is, configures the control pin of the transmitting and addressing unit 11, the control pin of the receiving and addressing unit 21, and the USB. Interface and acquisition pins; then collect a set of sample values as a reference value.
  • system initialization that is, configures the control pin of the transmitting and addressing unit 11, the control pin of the receiving and addressing unit 21, and the USB. Interface and acquisition pins; then collect a set of sample values as a reference value.
  • the scanning process is MCU
  • the transmitting and selecting location unit is controlled to control the transmitting tube array to emit light one by one, and then the receiving and selecting unit is controlled to strobe the corresponding signal of the transmitting tube array for sampling until all the lamps are sampled, and only one transmitting tube emits light at a time.
  • a packet of sampled data is obtained. Then perform the point algorithm and the tracking algorithm, and finally pass The USB interface is reported to the computer.
  • the timing sampling of the transmit tube is typically implemented using a timer interrupt. After starting a round of sampling, the timer interrupt is configured on the software, and then the timer interrupts the interval to touch the acquisition program, and the signal sampling for each receiving tube is completed in turn.
  • FIG 8 it is an amplifying unit 3 Output waveform diagram. It adopts single-pulse sampling mode. It can be seen from the figure that the signal rises faster, even if the acquisition speed is improved, it can adapt to the multi-point speed requirement.
  • Embodiment 2 Compared with the prior art, the solution of the present invention does not use a carrier, and the part of the carrier demodulation circuit is removed, which greatly reduces the hardware cost.
  • Embodiment 2 is compared with the prior art, the solution of the present invention does not use a carrier, and the part of the carrier demodulation circuit is removed, which greatly reduces the hardware cost.
  • the difference is that it further comprises the following steps:
  • the infrared phototransistor has the disadvantage of slow response speed, it mainly shows that the signal value rises and changes slowly during scanning. If the sampling signal arrives at steady state, the cycle is too slow, and each infrared touch screen uses 300. Many pairs of infrared pair tubes (infrared emitting tubes and infrared phototransistors), the total time of one round of acquisition can not meet the needs of real-time touch control, and the use of early sampling can overcome the shortcomings of slow response of infrared phototransistors.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the difference is that it also includes the following steps:
  • the MCU processor 5 uses an adaptive algorithm to algorithmically correct the discriminant threshold of the infrared phototransistor.
  • Normal infrared phototransistor will be sampled after reaching steady state. It will be more accurate. If the sample is sampled in advance, the level has not reached the steady state. It is an intermediate process and the threshold will change. Therefore, the sampling needs to be performed. The threshold is adjusted, that is, the smaller the sample, the smaller the level rises and the smaller the threshold.
  • the internal adaptive module performs algorithmic correction on the discriminating threshold of the infrared phototransistor to overcome the defect of sampling before the signal of the infrared phototransistor reaches the steady state, and after testing, a consistent speed can be achieved.
  • the technical solution disclosed in the application of the present invention does not require a demodulation circuit, and has the advantages of simple circuit and short response time. Significantly reduces costs and reduces the probability of hardware failure.
  • the single-pulse acquisition method is adopted, and the acquisition speed is also improved, which can be adapted to the requirements of multi-point speed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'invention concerne un procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge. L'écran tactile infrarouge basé sur le capteur optique infrarouge comprend : une unité d'émission infrarouge, une unité de réception infrarouge, une unité d'amplification, une source d'alimentation et un processeur MCU. La source d'alimentation fournit de l'énergie électrique à l'unité d'émission infrarouge et à l'unité de réception infrarouge. L'unité de réception infrarouge comprend une unité de sélection d'adresse de réception et une unité réseau de tubes de réception, et une triode de capteur optique infrarouge est prévue sur l'unité réseau de tubes de réception. Le procédé comprend les étapes suivantes : l'unité d'émission infrarouge émet un rayon infrarouge ; la triode de capteur optique infrarouge de l'unité de réception infrarouge reçoit le rayon infrarouge, l'unité d'amplification amplifie un signal et envoie le signal au processeur MCU pour un processus d'échantillonnage, et le processeur MCU exécute le processus d'échantillonnage selon un mode d'échantillonnage à une seule impulsion ; et le processeur MCU contrôle une séquence temporelle de l'unité d'émission infrarouge et de l'unité de réception infrarouge. L'invention ne requiert pas de circuit de démodulation et offre ainsi les avantages d'avoir un circuit simple et un délai de réponse court.
PCT/CN2013/071539 2013-02-07 2013-02-07 Procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge WO2014121501A1 (fr)

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PCT/CN2013/071539 WO2014121501A1 (fr) 2013-02-07 2013-02-07 Procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge
CN201380003131.9A CN104115104A (zh) 2013-02-07 2013-02-07 基于红外光敏的红外触摸屏的实现方法

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PCT/CN2013/071539 WO2014121501A1 (fr) 2013-02-07 2013-02-07 Procédé permettant de mettre en œuvre un écran tactile infrarouge basé sur un capteur optique infrarouge

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107192715A (zh) * 2017-07-14 2017-09-22 河南中烟工业有限责任公司 一种新型卷烟机水松纸接头检测装置
CN108170302A (zh) * 2016-12-05 2018-06-15 深圳市鸿合创新信息技术有限责任公司 一种红外触控电路
CN113219437A (zh) * 2021-05-26 2021-08-06 中山市科卓尔电器有限公司 一种单片机自携带运放红外距离检测电路

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109029520A (zh) * 2018-06-22 2018-12-18 杭州摩焕科技有限公司 一种基于红外发射管与接收管阵列的外置的数字显示仪表监测系统
CN114778880B (zh) * 2022-04-28 2023-08-22 无锡物联网创新中心有限公司 一种多路锭子的并行测速方法及相关装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005174189A (ja) * 2003-12-15 2005-06-30 Sanyo Electric Co Ltd レシーバ、電子ペンの位置検出装置、電子ペンの位置表示システム、レシーバの超音波受信方法
CN101556521A (zh) * 2008-04-08 2009-10-14 北京汇冠新技术股份有限公司 用于红外触摸屏的光电信号接收电路
CN101893968A (zh) * 2009-05-21 2010-11-24 北京汇冠新技术股份有限公司 一种红外触摸屏信号处理电路
CN102750048A (zh) * 2012-06-25 2012-10-24 深圳富创通科技有限公司 一种红外触摸屏

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070165008A1 (en) * 2006-01-17 2007-07-19 International Business Machines Corporation Compact infrared touch screen apparatus
CN101369201B (zh) * 2008-08-20 2010-05-12 上海广电光显技术有限公司 一种红外触摸屏的故障管快速查找方法
CN201319183Y (zh) * 2008-11-18 2009-09-30 鸿富锦精密工业（深圳）有限公司 具有红外触摸功能的电子装置
CN101477428B (zh) * 2008-12-02 2011-12-07 广东威创视讯科技股份有限公司 一种红外触摸定位装置
CN101770315B (zh) * 2009-01-05 2012-05-23 鸿富锦精密工业（深圳）有限公司 具有滑动控制的触摸电子装置及其滑动控制方法
CN102411454A (zh) * 2010-09-21 2012-04-11 上海优熠电子科技有限公司 采用纵向排列的光电元件的红外触摸屏
CN102902424B (zh) * 2012-10-23 2015-10-07 广东威创视讯科技股份有限公司 一种提高红外触摸屏抗环境光干扰的方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005174189A (ja) * 2003-12-15 2005-06-30 Sanyo Electric Co Ltd レシーバ、電子ペンの位置検出装置、電子ペンの位置表示システム、レシーバの超音波受信方法
CN101556521A (zh) * 2008-04-08 2009-10-14 北京汇冠新技术股份有限公司 用于红外触摸屏的光电信号接收电路
CN101893968A (zh) * 2009-05-21 2010-11-24 北京汇冠新技术股份有限公司 一种红外触摸屏信号处理电路
CN102750048A (zh) * 2012-06-25 2012-10-24 深圳富创通科技有限公司 一种红外触摸屏

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108170302A (zh) * 2016-12-05 2018-06-15 深圳市鸿合创新信息技术有限责任公司 一种红外触控电路
CN108170302B (zh) * 2016-12-05 2024-01-30 深圳市鸿合创新信息技术有限责任公司 一种红外触控电路
CN107192715A (zh) * 2017-07-14 2017-09-22 河南中烟工业有限责任公司 一种新型卷烟机水松纸接头检测装置
CN107192715B (zh) * 2017-07-14 2023-09-15 河南中烟工业有限责任公司 一种新型卷烟机水松纸接头检测装置
CN113219437A (zh) * 2021-05-26 2021-08-06 中山市科卓尔电器有限公司 一种单片机自携带运放红外距离检测电路
CN113219437B (zh) * 2021-05-26 2024-01-12 中山市科卓尔电器有限公司 一种单片机自携带运放红外距离检测电路

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