CN111879428A - Wireless temperature measuring device of switch cabinet - Google Patents
Wireless temperature measuring device of switch cabinet Download PDFInfo
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- CN111879428A CN111879428A CN202010926445.8A CN202010926445A CN111879428A CN 111879428 A CN111879428 A CN 111879428A CN 202010926445 A CN202010926445 A CN 202010926445A CN 111879428 A CN111879428 A CN 111879428A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
Abstract
The invention relates to the technical field of temperature measurement systems and discloses a wireless temperature measurement device for a switch cabinet. The wireless temperature measuring device for the switch cabinet adopts a temperature measuring scheme of semiconductor IC temperature sensor temperature measurement and wireless transmission, and is composed of a high-voltage side transmitting system, a low-voltage side receiving system and a base station, wherein the high-voltage side transmitting system mainly completes measurement of the contact temperature of the high-voltage switch cabinet and wireless transmission of temperature data, and the low-voltage side receiving system mainly completes reception of the wireless temperature data and uploads the temperature data to the base station for monitoring in an MODBUS communication protocol mode through an RS-232 bus.
Description
Technical Field
The invention relates to the technical field of temperature measurement systems, in particular to a wireless temperature measurement device for a switch cabinet.
Background
The switch cabinet is an electric device, the outside line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, each branch circuit is arranged according to the requirement, such as an instrument, an automatic control, a motor magnetic switch, various alternating current contactors and the like, some switch cabinets are also provided with a high-voltage chamber and a low-voltage chamber, and are provided with a high-voltage bus, such as a power plant and the like, and some switch cabinets are also provided with a low-frequency load reducer for protecting main equipment.
The main maintenance part of the switch cabinet is a contact part, the abnormal change of the temperature of the contact can be caused if the contact is loosened and the elastic aging contact surface is not clean, and the operation temperature of the contact is detected on line by adopting no reliable means, and the scheduled maintenance is often adopted, so that the accidents such as equipment burnout or sudden power failure are easily caused, and the wireless temperature measuring device for the switch cabinet is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a switch cabinet wireless temperature measuring device.
The invention provides the following technical scheme: the wireless temperature measuring device comprises a high-voltage side transmitting system, a low-voltage side receiving system and a base station, wherein the high-voltage side transmitting system is in communication connection with the low-voltage side receiving system, and the low-voltage side receiving system is in communication connection with the base station;
the high-voltage side transmitting system comprises a single chip microcomputer, a temperature sensor, a wireless transmitting and receiving module, a radio frequency amplification module and a microwave switch; the single chip microcomputer is in communication connection with the temperature sensor, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the temperature sensor is controlled by the single chip microcomputer to measure and convert the temperature, and then the single chip microcomputer is used for packaging and processing the temperature and sending data to the low-voltage side receiving system by the wireless transmission module;
the low-voltage side receiving system comprises a processor, a wireless receiving and transmitting module, a radio frequency amplification module and a microwave switch; the processor is in communication connection with the wireless transceiver module, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the low-voltage side receiving system receives temperature data of the multi-path high-voltage side transmitting system, is connected with the base station through an RS-232 bus, and sends the corresponding temperature data to the upper computer in real time through the bus for further operation according to the instruction of the upper computer by a question-answer mechanism of an MODBUS communication protocol;
the maximum transmitting power of the high-voltage side transmitting system and the maximum transmitting power of the low-voltage side receiving system are lower, and in order to enlarge the wireless transmission distance, a radio frequency amplification module is added behind the wireless transceiving module to increase the power of wireless communication;
the base station comprises a base station, a power output interface and a power output interface, wherein the base station consists of a microprocessor, an integrated LED display screen, a wireless transmission module, a conversion module, a detection unit and a keyboard interface;
the base station receives the data, the microprocessor is responsible for network parameter configuration of the temperature measuring nodes and displays related information through the integrated LED display screen, the base station is communicated with the background server in a conversion module bus mode, and the detection unit mainly has the functions of data analysis and alarm.
Preferably, the temperature sensor is a DS18B20 digital temperature sensor.
Preferably, the singlechip is a 16-bit MSP430 singlechip with ultra-low power consumption.
Preferably, the chip inside the wireless transceiver module adopts an nRF24L01 chip integrated by nordic2.4g wireless communication technology.
Preferably, the processor is selected from MSP430F 147.
Preferably, the data interface of the wireless transmission module is composed of a DCLK port and a DIO port, the DCLK is used as a synchronous clock for data transmission and data reception, the DIO is a bidirectional data line, and the wireless transmission module can be set to three different data transceiving modes, namely, a synchronous NRZ mode, a synchronous manchester mode and an asynchronous transmission UART mode.
Preferably, the conversion module converts the TTL level of the Max485 chip into the RS485 standard, and then performs conversion between the RS485 and the RS 232.
Preferably, a memory is arranged in the detection unit to record temperature data, and when the temperature reaches a threshold value, an alarm signal is sent out.
Compared with the prior art, the invention has the following beneficial effects:
this wireless temperature measuring device of cubical switchboard, adopt semiconductor IC temperature sensor temperature measurement and wireless transmission's temperature measurement scheme, this temperature measuring device divides high pressure side transmitting system, low pressure side receiving system and basic station triplex, high pressure side transmitting system mainly accomplishes the measurement of high tension switchgear contact temperature and the wireless transmission of temperature data, low pressure side receiving system mainly accomplishes the receipt of wireless temperature data, and through RS-232 bus, upload the base station control with temperature data with MODBUS communication protocol's mode, the basic station communicates with low pressure side receiving terminal with MODBUS communication protocol on the one hand, and handle the temperature value, show, realize on-line monitoring's purpose.
Drawings
FIG. 1 is a block diagram showing the structure of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure, and in order to keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and known parts of the disclosure are omitted to avoid unnecessarily obscuring the concepts of the present disclosure.
Referring to fig. 1, the wireless temperature measuring device for a switch cabinet includes a high-voltage side transmitting system, a low-voltage side receiving system and a base station, wherein the high-voltage side transmitting system is in communication connection with the low-voltage side receiving system, and the low-voltage side receiving system is in communication connection with the base station;
the high-voltage side transmitting system comprises a single chip microcomputer, a temperature sensor, a wireless transmitting and receiving module, a radio frequency amplification module and a microwave switch; the single chip microcomputer is in communication connection with the temperature sensor, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the temperature sensor is controlled by the single chip microcomputer to measure and convert the temperature, and then the single chip microcomputer is used for packaging and processing the temperature and sending data to the low-voltage side receiving system by the wireless transmission module;
the temperature sensor adopts a DS18B20 digital temperature sensor, the temperature sensor is arranged at a contact part, a single bus interface mode is adopted, data and command transmission can be realized through a data line, multipoint networking is supported, a bus can be simultaneously hung with 127 DS18B20 at most, and multipoint temperature monitoring is realized conveniently.
The single chip microcomputer is a 16-bit MSP430 single chip microcomputer with ultra-low power consumption, a Reduced Instruction Set (RISC) structure is adopted, one instruction can be executed in one clock cycle, and the traditional C51 single chip microcomputer can execute one instruction only in 12 clock cycles.
The low-voltage side receiving system comprises a processor, a wireless receiving and transmitting module, a radio frequency amplification module and a microwave switch; the processor is in communication connection with the wireless transceiver module, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the low-voltage side receiving system receives temperature data of the multi-path high-voltage side transmitting system, is connected with the base station through an RS-232 bus, and sends the corresponding temperature data to the upper computer in real time through the bus for further operation according to the instruction of the upper computer by a question-answer mechanism of an MODBUS communication protocol;
the processor adopts MSP430F147 series single-chip microcomputer TI jointing high-performance simulation technology, and each member integrates abundant on-chip peripherals.
The maximum transmitting power of the high-voltage side transmitting system and the maximum transmitting power of the low-voltage side receiving system are lower, and in order to enlarge the wireless transmission distance, a radio frequency amplification module is added behind the wireless transceiving module to increase the power of wireless communication; the wireless transceiver module is used for universality, and the module can receive and transmit data, so that a microwave change-over switch circuit is added in the circuit, a transmitting channel is selected during transmission, and a receiving channel is selected during receiving.
The chip inside the wireless transceiver module adopts an nRF24L01 chip integrated by Nordic2.4G wireless communication technology,
the base station comprises a base station, a power output interface and a power output interface, wherein the base station consists of a microprocessor, an integrated LED display screen, a wireless transmission module, a conversion module, a detection unit and a keyboard interface;
the base station receives the data, the microprocessor is responsible for network parameter configuration of the temperature measuring nodes and displays related information through the integrated LED display screen, the base station is communicated with the background server in a conversion module bus mode, and the detection unit mainly has the functions of data analysis and alarm.
The data interface of the wireless transmission module consists of a DCLK port and a DIO port, the DCLK is used as a synchronous clock for data transmission and data reception, the DIO is a bidirectional data line, and the wireless transmission module can be set into three different data receiving and transmitting modes, namely a synchronous NRZ mode, a synchronous Manchester mode and an asynchronous transmission UART mode.
And the conversion module converts the TTL level of the Max485 chip into the RS485 standard, and then performs conversion between the RS485 and the RS 232.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (8)
1. Wireless temperature measuring device of cubical switchboard, its characterized in that: the device comprises a high-voltage side transmitting system, a low-voltage side receiving system and a base station, wherein the high-voltage side transmitting system is in communication connection with the low-voltage side receiving system, and the low-voltage side receiving system is in communication connection with the base station;
the high-voltage side transmitting system comprises a single chip microcomputer, a temperature sensor, a wireless transmitting and receiving module, a radio frequency amplification module and a microwave switch; the single chip microcomputer is in communication connection with the temperature sensor, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the temperature sensor is controlled by the single chip microcomputer to measure and convert the temperature, and then the single chip microcomputer is used for packaging and processing the temperature and sending data to the low-voltage side receiving system by the wireless transmission module;
the low-voltage side receiving system comprises a processor, a wireless receiving and transmitting module, a radio frequency amplification module and a microwave switch; the processor is in communication connection with the wireless transceiver module, the wireless transceiver module is in communication connection with the single chip microcomputer, and the wireless transceiver module is in communication connection with the radio frequency amplification module; the radio frequency amplification module is in communication connection with the microwave switch;
the low-voltage side receiving system receives temperature data of the multi-path high-voltage side transmitting system, is connected with the base station through an RS-232 bus, and sends the corresponding temperature data to the upper computer in real time through the bus for further operation according to the instruction of the upper computer by a question-answer mechanism of an MODBUS communication protocol;
the maximum transmitting power of the high-voltage side transmitting system and the maximum transmitting power of the low-voltage side receiving system are lower, and in order to enlarge the wireless transmission distance, a radio frequency amplification module is added behind the wireless transceiving module to increase the power of wireless communication;
the base station comprises a base station, a power output interface and a power output interface, wherein the base station consists of a microprocessor, an integrated LED display screen, a wireless transmission module, a conversion module, a detection unit and a keyboard interface;
the base station receives the data, the microprocessor is responsible for network parameter configuration of the temperature measuring nodes and displays related information through the integrated LED display screen, the base station is communicated with the background server in a conversion module bus mode, and the detection unit mainly has the functions of data analysis and alarm.
2. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: the temperature sensor adopts a DS18B20 digital temperature sensor.
3. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: the single-chip microcomputer is a 16-bit MSP430 single-chip microcomputer with ultra-low power consumption.
4. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: the chip inside the wireless transceiver module adopts an nRF24L01 chip integrated by a Nordic2.4G wireless communication technology.
5. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: MSP430F147 is selected by the processor.
6. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: the data interface of the wireless transmission module consists of a DCLK port and a DIO port, the DCLK is used as a synchronous clock for data transmission and data reception, the DIO is a bidirectional data line, and the wireless transmission module can be set into three different data receiving and transmitting modes, namely a synchronous NRZ mode, a synchronous Manchester mode and an asynchronous transmission UART mode.
7. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: and the conversion module converts the TTL level of the Max485 chip into the RS485 standard, and then performs conversion between the RS485 and the RS 232.
8. The wireless temperature measuring device of the switch cabinet according to claim 1, wherein: a memory is arranged in the detection unit to record temperature data, and when the temperature reaches a threshold value, an alarm signal is sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926445.8A CN111879428A (en) | 2020-09-07 | 2020-09-07 | Wireless temperature measuring device of switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010926445.8A CN111879428A (en) | 2020-09-07 | 2020-09-07 | Wireless temperature measuring device of switch cabinet |
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| CN111879428A true CN111879428A (en) | 2020-11-03 |
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| CN202010926445.8A Pending CN111879428A (en) | 2020-09-07 | 2020-09-07 | Wireless temperature measuring device of switch cabinet |
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Citations (7)
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| US20050210340A1 (en) * | 2004-03-18 | 2005-09-22 | Townsend Christopher P | Wireless sensor system |
| CN102853941A (en) * | 2012-09-06 | 2013-01-02 | 上海欣影电力科技发展有限公司 | Wireless temperature on-line monitoring system for base station type switch cabinet |
| CN103778769A (en) * | 2014-01-16 | 2014-05-07 | 河海大学 | High-voltage switch cabinet multi-point monitoring system based on wireless temperature sensor network |
| CN203705071U (en) * | 2014-01-16 | 2014-07-09 | 河海大学 | Point-to-multipoint temperature monitoring apparatus of high-voltage switch cabinets |
| CN106813780A (en) * | 2017-03-27 | 2017-06-09 | 南宁市茂宏信息技术有限公司 | High-voltage board isolation switch contact temperature monitoring system |
| CN109506798A (en) * | 2019-01-21 | 2019-03-22 | 赵玉才 | A kind of contact temperature of high-voltage switch cabinet monitoring system |
| CN208635927U (en) * | 2018-07-12 | 2019-03-22 | 黑龙江科技大学 | A kind of temperature monitoring early warning system of high-voltage switch cabinet of transformer substation |
-
2020
- 2020-09-07 CN CN202010926445.8A patent/CN111879428A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050210340A1 (en) * | 2004-03-18 | 2005-09-22 | Townsend Christopher P | Wireless sensor system |
| CN102853941A (en) * | 2012-09-06 | 2013-01-02 | 上海欣影电力科技发展有限公司 | Wireless temperature on-line monitoring system for base station type switch cabinet |
| CN103778769A (en) * | 2014-01-16 | 2014-05-07 | 河海大学 | High-voltage switch cabinet multi-point monitoring system based on wireless temperature sensor network |
| CN203705071U (en) * | 2014-01-16 | 2014-07-09 | 河海大学 | Point-to-multipoint temperature monitoring apparatus of high-voltage switch cabinets |
| CN106813780A (en) * | 2017-03-27 | 2017-06-09 | 南宁市茂宏信息技术有限公司 | High-voltage board isolation switch contact temperature monitoring system |
| CN208635927U (en) * | 2018-07-12 | 2019-03-22 | 黑龙江科技大学 | A kind of temperature monitoring early warning system of high-voltage switch cabinet of transformer substation |
| CN109506798A (en) * | 2019-01-21 | 2019-03-22 | 赵玉才 | A kind of contact temperature of high-voltage switch cabinet monitoring system |
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Application publication date: 20201103 |