CN103542951A - Mining temperature sensor - Google Patents
Mining temperature sensor Download PDFInfo
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- CN103542951A CN103542951A CN201210245318.7A CN201210245318A CN103542951A CN 103542951 A CN103542951 A CN 103542951A CN 201210245318 A CN201210245318 A CN 201210245318A CN 103542951 A CN103542951 A CN 103542951A
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- temperature sensor
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Abstract
A mining temperature sensor is composed of a power circuit, a temperature sensor body, an infrared receiving circuit, a digital tube and drive circuit, a storage circuit, a single-chip microcomputer, a communication interface circuit and the like. The power circuit provides a stable direct-current power supply, the single-chip microcontroller is connected with the temperature sensor body, the infrared receiving circuit, the digital tube and drive circuit ,the storage circuit and the communication interface circuit respectively. Temperature data are displayed through a digital tube, and transmitting of the temperature data is selectable in three modes, namely a CAN (controller area network) communication mode, a serial port communication mode and a frequency output mode. The mining temperature sensor has the advantages of being high in accuracy, high in stability, low in energy consumption and flexible in the communication modes, and calibration and standardization of the sensor can be performed through an infrared remote control.
Description
Technical field
Type of the present invention relates to the sensor in a kind of temperature survey field, particularly the thermometric sensor of a kind of mine underground.
Background technology
Temperature is a kind of basic environmental parameter, and its measurement is more typically application in industrial processes, and measuring method and the device of therefore studying temperature have great importance.At present, the sensitive element of existing colliery Temperature Transducer in Common Use mainly contains all kinds of thermal resistances, thermopair, semiconductor heat dependent sensor etc., its output signal has non-linear, the shortcoming such as exist that precision is low, measuring error is large, job insecurity, poor reliability, serviceable life are short, and with the simplification of external communication interface form.
Summary of the invention
The technical deficiency that type of the present invention exists for existing product, and a kind of mining scene temperature temperature sensor that gather, that communication modes is flexible and changeable that is applicable to of developing is comprised of power circuit, temperature sensor, infrared receiving circuit, charactron and driving circuit, memory circuit, single-chip microcomputer, communication interface circuit etc.The technological means that type of the present invention adopts is as follows: power circuit is comprised of reduction voltage circuit and low-dropout linear voltage-regulating circuit, for sensor provides stable DC supply.Temperature sensor chip is ambient temperature collection, and by unibus mode, data passed to single-chip microcomputer.Single-chip microcomputer, by after data processing, is shown and is sent via communication interface circuit by charactron.Three kinds of communication interface circuits are respectively the serial port circuit of CAN transceiver circuit, light-coupled isolation and the frequency signal output circuit of light-coupled isolation, the passage that provides data to send for sensor.Infrared interface circuit is comprised of infrared receiving terminal, receives the signal of Infrared remote controller, completes calibration and the demarcation of sensor.Memory circuit is comprised of ferroelectric memory, the parameters in storage sensor demarcation and calibration process.
Type of the present invention has high precision, high stability, low-power consumption, the flexible and changeable feature of communication modes, and can carry out by outside Infrared remote controller calibration and the demarcation of sensor.
Further technical characterictic, described single-chip microcomputer is selected STM F103VCT6.
Described temperature sensor chip is selected DS18B20.
Described CAN transceiver is selected CTM8251T.
Described infrared receiving terminal is selected IRM338.
Described storer is selected FM24C02.
Described communication interface circuit is selected the serial communication mode of CAN communication modes, light-coupled isolation, the frequency way of output of light-coupled isolation.
The beneficial effect of type of the present invention is: have the features such as high precision, high stability, low-power consumption, calibration convenience, and communication modes is flexible and changeable.
Accompanying drawing explanation
Fig. 1 is the block diagram of type of the present invention.
Fig. 2 is the circuit theory diagrams () of type of the present invention.
Fig. 3 is the circuit theory diagrams (two) of type of the present invention.
Fig. 4 is scm software process flow diagram.
Embodiment
Type circuit block diagram of the present invention as shown in Figure 1, comprises power circuit 1, temperature sensor 2, infrared receiving circuit 3, charactron and driving circuit 4, memory circuit 5, CAN communication interface circuit 6, serial interface circuit 7, frequency signal output interface circuit 8, single-chip microcomputer 9.
After adding 18V DC voltage by external interface, through reduction voltage circuit and low-dropout linear voltage-regulating circuit output 3.3V DC voltage, temperature sensor is started working.Monolithic processor resetting, crystal oscillator starting of oscillation, makes it in ready state.Temperature sensor is changed into digital signal after gathering ambient temperature data, by unibus mode, passes to single-chip microcomputer.Single-chip microcomputer circle collection temperature data carries out data conversion treatment after receiving temperature data, sends into charactron and shows, and data are sent by three kinds of communication interface circuits.
Type circuit theory diagrams of the present invention as shown in Figure 2 and Figure 3,1 pin and 2 pin of external dc power positive pole and negative pole access CON1 terminal, 18V voltage is input on 6 pin of step-down chip U1 through anti-reverse diode D1, after processing by U1 step-down, and the 2 pin output 5V DC voltage of U1.This voltage enters into 3 pin of low pressure difference linearity voltage stabilizing chip U2 after filtering afterwards, the 2 pin output 3.3V DC voltage of U2, and temperature sensor is started working.
In temperature survey process, when temperature sensor chip U3 successfully gathers after ambient temperature data, the digital signal of the 2 pin output temperatures of U3, this pin is connected to 30 pin of single-chip microcomputer U5.Single-chip microcomputer obtains after temperature, and advanced row data processing, then sends into Nixie tube drive circuit U10 by serial communication, shows in real time.
In temperature data process of transmitting, first U5 sends data into CAN isolation transceiver U7 by signal wire CANH, CANL, and U7 sends to data in CAN bus.Next U5 sends into temperature data by signal wire USART1_TX 2 pin of optocoupler U8, and U8 sends to data on universal serial bus.Finally, U5 is transformed into temperature data the frequency signal being directly proportional with it, and by optocoupler, U9 sends it.
In sensor calibration processes, infrared receiving terminal U4 receives the key assignments of Infrared remote controller, the key assignments of the 3 pin output Infrared remote controller of U4, and this pin is connected to 48 pin of U5.After 48 pin of U5 receive key assignments, enter in serial ports interrupt service routine, carry out corresponding calibration operation, data are stored in ferroelectric memory U6 simultaneously.
Type of the present invention has high precision, high stability, low-power consumption, the flexible and changeable feature of communication modes, and can carry out by Infrared remote controller calibration and the demarcation of sensor.
Claims (7)
1. a mining temperature sensor, is characterized in that: comprise power circuit, temperature sensor, infrared receiving circuit, charactron and driving circuit, memory circuit, single-chip microcomputer and communication interface circuit.Power circuit is comprised of reduction voltage circuit and low-dropout linear voltage-regulating circuit, for sensor provides stable DC supply.Temperature sensor chip is ambient temperature collection, and by unibus mode, data passed to single-chip microcomputer.Single-chip microcomputer, by after data processing, is shown and is sent via communication interface circuit by charactron.The communication interface circuit of three kinds of forms is respectively the serial port circuit of CAN transceiver circuit, light-coupled isolation and the frequency signal output circuit of light-coupled isolation, the passage that provides data to send for sensor.Infrared interface circuit is comprised of infrared receiving terminal, receives the signal of Infrared remote controller, completes calibration and the demarcation of sensor.Memory circuit is comprised of ferroelectric memory, the parameters in storage sensor calibration and calibration process.
2. mining temperature sensor according to claim 1, is characterized in that: described single-chip microcomputer is selected STM F103VCT6.
3. mining temperature sensor according to claim 1, is characterized in that: described temperature sensor chip is selected DS18B20.
4. mining temperature sensor according to claim 1, is characterized in that: described CAN transceiver is selected CTM8251T.
5. mining temperature sensor according to claim 1, is characterized in that: described infrared receiving terminal is selected IRM338.
6. mining temperature sensor according to claim 1, is characterized in that: described storer is selected FM24C02.
7. mining temperature sensor according to claim 1, is characterized in that: described communication interface circuit is selected the serial communication mode of CAN communication modes, light-coupled isolation, the frequency way of output of light-coupled isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245318.7A CN103542951A (en) | 2012-07-17 | 2012-07-17 | Mining temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210245318.7A CN103542951A (en) | 2012-07-17 | 2012-07-17 | Mining temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542951A true CN103542951A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210245318.7A Pending CN103542951A (en) | 2012-07-17 | 2012-07-17 | Mining temperature sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176004A (en) * | 2021-04-26 | 2021-07-27 | 精进电动科技股份有限公司 | Temperature measurement circuit and motor controller |
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| WO2008009133A1 (en) * | 2006-07-21 | 2008-01-24 | Mcgill University | Instrumented ball |
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| CN201440097U (en) * | 2009-07-23 | 2010-04-21 | 江苏出入境检验检疫局 | Production temperature and frequency monitoring device for food industry |
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| CN201689491U (en) * | 2009-10-27 | 2010-12-29 | 河南新天科技股份有限公司 | Infrared intelligent heat metering device with super-low power consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113176004A (en) * | 2021-04-26 | 2021-07-27 | 精进电动科技股份有限公司 | Temperature measurement circuit and motor controller |
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Application publication date: 20140129 |