CN204086432U - The decision circuit of sensor die analog quantity range of signal - Google Patents
The decision circuit of sensor die analog quantity range of signal Download PDFInfo
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Abstract
本实用新型涉及传感器模拟量信号判决电路，具体为传感器模拟量信号范围的判决电路，解决目前缺乏该判决电路问题。技术方案如下：包括第一-第七电阻，第一、第二可控精密稳压源芯片，发光二极管，光敏三极管输出型光耦；第一、第二电阻串联分压，第三、第四电阻串联分压，第五-第七电阻限流防止第二可控精密稳压源、光敏三极管输出型光耦的二极管和发光二极管受到大电流冲击，第一、第二可控精密稳压源芯片分别并联在第二电阻侧和第四电阻侧，光敏三极管输出型光耦的三极管端串联第七电阻和发光二极管。本实用新型优点是：1、实时监测和预警超出范围的传感器信号；2、避免长时间占用处理单元资源实时处理数据、消耗电能、减短寿命等问题。
The utility model relates to a sensor analog signal judgment circuit, in particular to a judgment circuit for a sensor analog signal range, which solves the problem of lacking the judgment circuit at present. The technical scheme is as follows: including the first-seventh resistors, the first and second controllable precision voltage regulator chips, light-emitting diodes, and phototransistor output optocouplers; the first and second resistors are connected in series to divide the voltage; Resistors are connected in series to divide the voltage, and the fifth-seventh resistors are current-limited to prevent the second controllable precision voltage regulator, the diode and light-emitting diode of the phototransistor output optocoupler from being impacted by large currents, the first and second controllable precision voltage regulators The chips are respectively connected in parallel on the second resistor side and the fourth resistor side, and the transistor end of the phototransistor output type optocoupler is connected in series with the seventh resistor and the light emitting diode. The utility model has the advantages of: 1. Real-time monitoring and early warning of sensor signals beyond the range; 2. Avoiding problems such as long-term occupation of processing unit resources for real-time processing of data, power consumption, and shortened lifespan.
Description
技术领域 technical field
本实用新型涉及传感器模拟量信号判决电路，具体为传感器模拟量信号范围的判决电路。 The utility model relates to a sensor analog signal judgment circuit, in particular to a judgment circuit for the sensor analog signal range.
背景技术 Background technique
在实际工程应用中，有时需要实时知道被监测设备的状态，这就需要处理单元实时处理传感器发送的信号。传感器发送的信号有数字量和模拟量两种，由于模拟量便于二次开发，所以实际工程现场传感器发送的信号大多都是模拟量的。模拟量信号又可分为范围量和暂态量信号两类，由于处理单元实时处理传感器发送的监测数据，不仅占用大量处理单元的资源，还极为消耗电能且缩短处理单元的使用寿命，尤其对电池供电的设备有很大制约；同时，处理单元处理模拟量数据需要一定的时间开销，而有些暂态量信号，持续时间只有数毫秒或更短，很容易造成数据漏报或采集不到。因此设计一种传感器模拟量信号范围的判决电路是非常有必要的。 In practical engineering applications, sometimes it is necessary to know the status of the monitored equipment in real time, which requires the processing unit to process the signals sent by the sensor in real time. There are two types of signals sent by sensors: digital and analog. Since analog is convenient for secondary development, most of the signals sent by sensors on the actual engineering site are analog. Analog signals can be divided into two categories: range signals and transient signals. Since the processing unit processes the monitoring data sent by the sensor in real time, it not only takes up a lot of resources of the processing unit, but also consumes a lot of power and shortens the service life of the processing unit, especially for Battery-powered equipment has great constraints; at the same time, the processing unit requires a certain amount of time to process analog data, and some transient signals last only a few milliseconds or less, which can easily cause data to be missed or not collected. Therefore, it is very necessary to design a judgment circuit for the sensor analog signal range.
发明内容 Contents of the invention
本实用新型解决目前缺乏传感器模拟量信号范围的判决电路问题，提供一种传感器模拟量信号范围的判决电路。 The utility model solves the problem of the current lack of a judgment circuit for the analog signal range of a sensor, and provides a judgment circuit for the analog signal range of a sensor.
本实用新型是通过以下技术方案实现的：传感器模拟量信号范围的判决电路，包括：第一-第七电阻，第一、第二可控精密稳压源芯片，发光二极管，光敏三极管输出型光耦；所述第一电阻的一端与第一可控精密稳压源芯片的参考极连接，所述第一电阻的另一端与第三电阻串联后连接到第一可控精密稳压源芯片的负极，所述第一可控精密稳压源芯片的参考极与正极之间连接有第二电阻，所述第一可控精密稳压源芯片的正极和负极之间连接有第四电阻，所述第一可控精密稳压源芯片的负极与第二可控精密稳压源芯片的参考极连接，所述第一可控精密稳压源芯片的正极与第二可控精密稳压源芯片的正极连接，所述第一、第三电阻的连接端经第五电阻后与第二可控精密稳压源芯片的负极连接，且第一、第三电阻的连接端作为信号输入端，第二电阻与第四电阻的连接端接地，所述第二可控精密稳压源芯片的正极与光敏三极管输出型光耦的负极连接，第二可控精密稳压源芯片的负极与光敏三极管输出型光耦的正极连接，所述光敏三极管输出型光耦的正极经第六电阻后与光敏三极管输出型光耦的集电极连接，光敏三极管输出型光耦的集电极与电源连接，光敏三极管输出型光耦的发射极经第七电阻后与发光二极管的正极连接，发光二极管的负极接地，发光二极管与第七电阻的连接端作为信号输出端。电路中R1与R2串联分压，R3与R4串联分压，且上述两条串联的支路相互并联，R5为防止输入大电流对U2造成冲击的保护电阻，R6、R7为限流电阻，U1可根据R2两端电压大小决定U1导通还是断开，U2根据R4两端电压大小决定U2导通还是断开，U3根据左侧U1、U2的通断情况控制右侧发光二极管的工作与否，以实现报警功能。 The utility model is realized through the following technical solutions: the judgment circuit of the sensor analog signal range, including: the first-seventh resistors, the first and second controllable precision voltage regulator chips, light-emitting diodes, photosensitive triode output type light coupling; one end of the first resistor is connected to the reference pole of the first controllable precision voltage regulator chip, and the other end of the first resistor is connected in series with the third resistor to the first controllable precision voltage regulator chip Negative pole, a second resistor is connected between the reference pole and the positive pole of the first controllable precision voltage stabilizing source chip, and a fourth resistor is connected between the positive pole and the negative pole of the first controllable precision voltage stabilizing source chip, so The negative pole of the first controllable precision voltage regulator chip is connected to the reference pole of the second controllable precision voltage regulator chip, and the positive pole of the first controllable precision voltage regulator chip is connected to the second controllable precision voltage regulator chip connected to the positive electrode of the first and third resistors, the connection ends of the first and third resistors are connected to the negative electrode of the second controllable precision voltage regulator chip after passing through the fifth resistor, and the connection ends of the first and third resistors are used as signal input ends, and the connection ends of the first and third resistors are used as signal input ends. The connecting end of the second resistor and the fourth resistor is grounded, the positive pole of the second controllable precision voltage regulator chip is connected to the negative pole of the phototransistor output type optocoupler, the negative pole of the second controllable precision voltage regulator chip is connected to the phototransistor output The positive pole of the phototransistor output optocoupler is connected to the collector of the phototransistor output optocoupler through the sixth resistor, the collector of the phototransistor output optocoupler is connected to the power supply, and the phototransistor output The emitter of the type optocoupler is connected to the anode of the light-emitting diode through the seventh resistor, the cathode of the light-emitting diode is grounded, and the connection end of the light-emitting diode and the seventh resistor is used as a signal output end. In the circuit, R1 and R2 are connected in series to divide the voltage, R3 and R4 are connected in series to divide the voltage, and the above two series branches are connected in parallel with each other. R5 is a protective resistor to prevent the impact of large input current on U2, R6 and R7 are current limiting resistors, and U1 U1 can be turned on or off according to the voltage across R2, U2 can be turned on or off according to the voltage across R4, and U3 can control whether the right LED works or not according to the on-off situation of U1 and U2 on the left side. , to realize the alarm function.
所述第一、第二可控精密稳压源芯片为TL431芯片。 The first and second controllable precision voltage regulator chips are TL431 chips.
本实用新型具有以下优点：1、可以实时监测和预警超出某一范围的传感器信号；2、避免了处理单元实时处理数据，带来的占用资源、消耗电能、减短寿命等问题。 The utility model has the following advantages: 1. Sensor signals beyond a certain range can be monitored and warned in real time; 2. Problems such as resource occupation, power consumption, and life shortening caused by real-time processing of data by the processing unit are avoided.
附图说明 Description of drawings
图1为本实用新型的电路图。 Fig. 1 is the circuit diagram of the utility model.
图中R1-第一电阻,R2-第二电阻,R3-第三电阻,R4-第四电阻,R5-第五电阻,R6-第六电阻,R7-第七电阻,U1-第一可控精密稳压源芯片,U2-第二可控精密稳压源芯片,U3-光敏三极管输出型光耦,D1-发光二极管,VCC-电源，IN-信号输入端，OUT-信号输出端。 In the figure, R1-first resistor, R2-second resistor, R3-third resistor, R4-fourth resistor, R5-fifth resistor, R6-sixth resistor, R7-seventh resistor, U1-first controllable Precision voltage regulator chip, U2-second controllable precision voltage regulator chip, U3-photosensitive transistor output optocoupler, D1-light-emitting diode, VCC-power supply, IN-signal input terminal, OUT-signal output terminal.
具体实施方式 Detailed ways
传感器模拟量信号范围的判决电路，包括：第一电阻R1-第七电阻R7，第一可控精密稳压源芯片U1，第二可控精密稳压源芯片U2，发光二极管D1，光敏三极管输出型光耦U3；所述第一电阻R1的一端与第一可控精密稳压源芯片U1的参考极连接，所述第一电阻R1的另一端与第三电阻R3串联后连接到第一可控精密稳压源芯片U1的负极，所述第一可控精密稳压源芯片U1的参考极与正极之间连接有第二电阻R2，所述第一可控精密稳压源芯片U1的正极和负极之间连接有第四电阻R4，所述第一可控精密稳压源芯片U1的负极与第二可控精密稳压源芯片U2的参考极连接，所述第一可控精密稳压源芯片U1的正极与第二可控精密稳压源芯片U2的正极连接，所述第一电阻R1、第三电阻R3的连接端经第五电阻R5后与第二可控精密稳压源芯片U2的负极连接，且第一电阻R1、第三电阻R3的连接端作为信号输入端IN，第二电阻R2与第四电阻R4的连接端接地，所述第二可控精密稳压源芯片U2的正极与光敏三极管输出型光耦U3的负极连接，第二可控精密稳压源芯片U2的负极与光敏三极管输出型光耦U3的正极连接，所述光敏三极管输出型光耦U3的正极经第六电阻R6后与光敏三极管输出型光耦的集电极连接，光敏三极管输出型光耦U3的集电极与电源VCC连接，光敏三极管输出型光耦U3的发射极经第七电阻R7后与发光二极管D1的正极连接，发光二极管D1的负极接地，发光二极管D1与第七电阻R7的连接端作为信号输出端OUT。使用时，传感器从IN端输入一个电压信号（技术人员可采用连接电阻的方式将电流信号转换为电压信号），根据电路连接关系可知：该判决电路确定的门限电压范围是：上限（1+R1/R2）V1REF，下限（1+R3/R4）V2REF，其中V1REF、V2REF分别为U1、U2的参考电压。当输入电压VIN的范围为：(1+R1/R2)V1REF >VIN>(1+R3/R4)V2REF时，U2导通，U3的发光二极管被U2短路，使得U3光敏三极管未导通，发光二极管D1供电切断；当VIN>(1+R1/R2) V1REF时，则U2不导通，U1导通，U3的发光二极管点亮，使得U3光敏三极管导通，发光二极管D1亮起；当VIN<(1+R3/R4)V2REF时，U1、U2都不导通，U3的发光二极管点亮，使得U3的光敏三极管导通，发光二极管D1亮起，即实现报警功能，同时判断电路的信号输出端OUT为后续的处理单元提供输入信号用于范围信号的判断。 The judgment circuit of the sensor analog signal range, including: the first resistor R1-the seventh resistor R7, the first controllable precision voltage regulator chip U1, the second controllable precision voltage regulator chip U2, light-emitting diode D1, phototransistor output Type optocoupler U3; one end of the first resistor R1 is connected to the reference pole of the first controllable precision voltage regulator chip U1, and the other end of the first resistor R1 is connected in series with the third resistor R3 to the first control the negative pole of the precise voltage stabilizing source chip U1, a second resistor R2 is connected between the reference pole and the positive pole of the first controllable precise voltage stabilizing source chip U1, and the positive pole of the first controllable precise voltage stabilizing source chip U1 The fourth resistor R4 is connected between the negative pole and the negative pole of the first controllable precision voltage regulator chip U1 and the reference pole of the second controllable precision voltage regulator chip U2, and the first controllable precision voltage regulator chip U2 is connected to the reference pole of the second controllable precision voltage regulator chip U2. The positive pole of the source chip U1 is connected to the positive pole of the second controllable precision voltage stabilizing source chip U2, and the connecting ends of the first resistor R1 and the third resistor R3 are connected to the second controllable precise voltage stabilizing source chip after passing through the fifth resistor R5. The negative pole of U2 is connected, and the connection terminal of the first resistor R1 and the third resistor R3 is used as the signal input terminal IN, and the connection terminal of the second resistor R2 and the fourth resistor R4 is grounded, and the second controllable precision voltage regulator chip U2 The positive pole of the phototransistor output-type optocoupler U3 is connected to the negative pole, the negative pole of the second controllable precision voltage regulator chip U2 is connected to the positive pole of the phototransistor output-type optocoupler U3, and the positive pole of the phototransistor output-type optocoupler U3 is connected through The sixth resistor R6 is connected to the collector of the phototransistor output optocoupler, the collector of the phototransistor output optocoupler U3 is connected to the power supply VCC, and the emitter of the phototransistor output optocoupler U3 passes through the seventh resistor R7 to connect with the light emitting diode. The anode of the diode D1 is connected, the cathode of the light emitting diode D1 is grounded, and the connection end of the light emitting diode D1 and the seventh resistor R7 is used as the signal output end OUT. When in use, the sensor inputs a voltage signal from the IN terminal (technicians can convert the current signal into a voltage signal by connecting a resistor), according to the circuit connection relationship: the threshold voltage range determined by the decision circuit is: upper limit (1+R1 /R2) V1 REF , the lower limit (1+R3/R4) V2 REF , where V1 REF and V2 REF are the reference voltages of U1 and U2 respectively. When the range of the input voltage VIN is: (1+R1/R2)V1 REF >VIN>(1+R3/R4)V2 REF , U2 is turned on, and the light-emitting diode of U3 is short-circuited by U2, so that the U3 phototransistor is not turned on , the power supply of light-emitting diode D1 is cut off; when VIN>(1+R1/R2) V1 REF , U2 is not conducting, U1 is conducting, and the light-emitting diode of U3 is lit, so that the U3 phototransistor is turned on, and the light-emitting diode D1 is lit ; When VIN<(1+R3/R4)V2 REF , U1 and U2 are not conducting, and the light-emitting diode of U3 is lit, so that the phototransistor of U3 is turned on, and the light-emitting diode D1 is lit, that is, the alarm function is realized, and at the same time The signal output terminal OUT of the judging circuit provides an input signal for the subsequent processing unit to judge the range signal.
具体实施时，所述第一、第二可控精密稳压源芯片为TL431芯片。 During specific implementation, the first and second controllable precision voltage regulator chips are TL431 chips.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN112379154A (en) * | 2020-10-30 | 2021-02-19 | 中车大连电力牵引研发中心有限公司 | Wide-range voltage signal acquisition circuit based on TL431 |
-
2014
- 2014-10-16 CN CN201420596885.1U patent/CN204086432U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680408A (en) * | 2016-03-17 | 2016-06-15 | 余姚市嘉荣电子电器有限公司 | Abutting circuit of water flow sensor |
| CN112379154A (en) * | 2020-10-30 | 2021-02-19 | 中车大连电力牵引研发中心有限公司 | Wide-range voltage signal acquisition circuit based on TL431 |
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