CN207232674U - A kind of switchgear digital temperature monitor - Google Patents
A kind of switchgear digital temperature monitor Download PDFInfo
- Publication number
- CN207232674U CN207232674U CN201720571715.1U CN201720571715U CN207232674U CN 207232674 U CN207232674 U CN 207232674U CN 201720571715 U CN201720571715 U CN 201720571715U CN 207232674 U CN207232674 U CN 207232674U
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- China
- Prior art keywords
- circuit
- telecommunication
- temperature sensor
- microprocessor
- switchgear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of switchgear digital temperature monitor, if it includes power circuit, acquisition control circuit, telecommunication circuit and dry temperature sensor；Power circuit is acquisition control circuit, telecommunication circuit and temperature sensor provide power supply；Acquisition control circuit includes microprocessor and the data storage circuitry, function button circuit, LED digital-scroll techniques and the alarm output circuit that are connected with microprocessor, the microprocessor is connected with telecommunication circuit, if telecommunication circuit connects external network and dry temperature sensor respectively, the telecommunication circuit includes two-way RS485 telecommunication circuits, RS485 telecommunication circuits are used for the numerical value of microcomputer reads temperature sensor all the way, and another way RS485 telecommunication circuits are used for microprocessor and external network networking carries out data transmission；Key position measures in temperature sensor alignment switchgear.The utility model realizes the detection of multiple temperature spots in switchgear, storage transmission, the operation of system of data are shown and fault alarm processing, avoids the hidden danger of overheating in switchgear, has ensured the safe operation of equipment.
Description
Technical field
It the utility model is related to a kind of monitoring temperature instrument, more particularly to a kind of switchgear digital temperature monitor.
Background technology
For switchgear in During Process of Long-term Operation, contact aging or busbar bad connection that can be because of switch cause contact resistance to become
Generate heat greatly, if lasting heating will make insulating element performance degradation, will ultimately result in the damage of electrical equipment or even have a power failure
Etc. major accident.Thus need to monitor the temperature of key position in switchgear in real time, alarm in temperature anomaly
With the safeguard measure such as vented exhaust, information is sent if necessary to overhaul in time, ensures the safe operation of switchgear.
At present, contact temperature-measuring and contactless temperature-measuring can be divided into the thermometric of switchgear, infrared measurement of temperature, which is that one kind is non-, to be connect
Thermometric mode is touched, the temperature of object is determined according to the infrared energy of testee, discord measurand is directly contacted, rung
Answer speed fast, easy for installation, be particularly suitable for the temperature survey of this charged object in switchgear contact.Infrared temperature sensor passes through
Digital communication mode transmits temperature value, and it is good by external interference, stability to be not easy, and multichannel letter can be transmitted on same circuit
Number.
The content of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, there is provided a kind of switchgear digital temperature monitoring
Instrument, with the temperature of key position in infrared non-contact mode measuring switchgear, temperature value is transmitted by digital communication mode, real
Showed the detection of multiple temperature spots in switchgear, data storage transmission, the operation of system show and fault alarm processing, avoid
The hidden danger of overheating, has ensured the safe operation of equipment in switchgear.
The technical solution adopted in the utility model is：
A kind of switchgear digital temperature monitor, it includes power circuit, acquisition control circuit, telecommunication circuit and some
Temperature sensor；The power circuit is acquisition control circuit, telecommunication circuit and temperature sensor provide power supply；Described adopts
Collection control circuit includes microprocessor and the data storage circuitry being connected with microprocessor, function button circuit, LED are digital aobvious
Show and alarm output circuit, realize the detection of multiple temperature spots in switchgear, storage transmission, the operation of system of data are shown and
Fault alarm processing；The microprocessor is connected with telecommunication circuit, and telecommunication circuit connects external network respectively and some temperature pass
Sensor, the telecommunication circuit include two-way RS485 telecommunication circuits, and RS485 telecommunication circuits are used for microcomputer reads temperature all the way
The numerical value of sensor, another way RS485 telecommunication circuits are used for microprocessor and external network networking carries out data transmission；Described
Key position measures in temperature sensor alignment switchgear.
Further, the temperature sensing is connected by Aviation Connector with telecommunication circuit.
Further, the temperature sensor is digital infrared temperature sensor.
Further, the power circuit is switching power supply, and switching power supply output two-way is mutually independent
First power supply and second source, the first power supply is acquisition control circuit, RS485 telecommunication circuits and temperature sensor provide all the way
Power supply, second source provide power supply for the another way RS485 telecommunication circuits that external network is networked.
Further, the acquisition control circuit is by the PIC16F194X microprocessors based on Microchip and periphery
Circuit forms.
The utility model uses above technical scheme, direct using digital infrared temperature sensor, discord measurand
Contact, it is fast response time, easy for installation；Temperature sensor transmits temperature value by digital communication mode, is not easy dry by the external world
Disturb, stability it is good；Temperature sensor is connected by Aviation Connector with telecommunication circuit, easy to debug and Quick overhaul；This reality
With the new data that can gather multiplex digital infrared temperature sensor, the detecting of multiple temperature spots in switchgear, number are realized
According to storage transmission, system operation show and fault alarm processing.
Brief description of the drawings
The utility model is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of system architecture diagram of switchgear digital temperature monitor circuit of the utility model；
Fig. 2 is the power circuit diagram of the embodiment of the utility model；
Fig. 3 is the microcontroller circuit figure of the embodiment of the utility model；
Fig. 4 is the data storage circuitry figure of the embodiment of the utility model；
Fig. 5 is the function button circuit diagram of the embodiment of the utility model；
Fig. 6 is the circuit diagram of the LED digital-scroll techniques of the embodiment of the utility model；
Fig. 7 is the alarm output circuit figure of the embodiment of the utility model；
Fig. 8 is the telecommunication circuit figure of the embodiment of the utility model.
Embodiment
As shown in one of Fig. 1-8, the utility model discloses a kind of switchgear digital temperature monitor, it includes power supply
Circuit 1, acquisition control circuit 2, telecommunication circuit 3 and temperature sensor 4.
As shown in Fig. 2, the power circuit 1 provides electricity for acquisition control circuit 2, telecommunication circuit 3 and temperature sensor 4
Source；Specifically the power circuit 1 is made of surge protection circuit, current rectifying and wave filtering circuit, switching power circuit, regulator circuit.
In the present embodiment, the 220V AC powers of outside offer access the mistake being made of compound PTC element and flow through first
Voltage protection circuit, prevents moment strong curcent surge from causing the damage of power supply, ensures the normal work of acquisition control circuit；AC power
Switching Power Supply, the Switching Power Supply output mutually independent power supply of two-way are supplied after rectifying and wave-filtering：First power supply is through secondary pressure
Power supply is provided to acquisition control circuit 2 and temperature sensor 4 afterwards, second source is after secondary pressure to the another of external network networking
RS485 telecommunication circuits provide power supply all the way.
The first power supply secondary pressure circuit uses step-down switching type integrated voltage-stabilized chip including voltage stabilizing chip U7, U7
LM2576S_5V, its 1st foot is power input, is connected to Switching Power Supply DC output end, its 3rd foot is ground terminal, it the 2nd
Foot is power output end, its 4th foot is feedback input end.There is voltage stabilizing chip LM2576_5V current limit and Thermal shutdown etc. to protect
Protection circuit, only needs few peripheral components to form efficient regulator circuit, it is possible to provide the reliable working powers of below 3A.
The second source secondary pressure circuit uses three terminal regulator LM78L05 including voltage stabilizing chip U6, U6.
The temperature sensor 4 is digital infrared temperature sensor 4, is directed at key position in switchgear and is surveyed
Amount, the temperature sensing are connected by Aviation Connector with telecommunication circuit.
As shown in figure 3, the acquisition control circuit 2 includes microprocessor 5, data storage circuitry 6, function button circuit
7th, LED digital-scroll techniques 8 and alarm output circuit 9, realize the detection of multiple temperature spots in switchgear, the storage of data transmission, are
The operation of system is shown and fault alarm processing.
In the present embodiment, acquisition control circuit 2 uses the PIC16F194X microprocessors based on Microchip, described
The interface that microprocessor 5 passes through RS485 telecommunication circuits all the way（That is sensor interface）It is logical with digital infrared temperature sensor 4
Interrogate, the temperature of each key position in read switch cabinet；The interface that the microprocessor passes through another RS485 telecommunication circuit
（That is data communication interface）With the upper interconnection plane of external network or adopting and copying device communication, multiple switch cabinet temperature monitor is realized
Centralized management.
As shown in figure 4, the digital memory circuit 6 is made of EEPROM storage chips 24LC512 and peripheral circuit, numeral
The EEPROM storage chips of storage circuit 6 are connected by IC buses with the microprocessor 5 of acquisition control circuit 2, storage temperature prison
The data such as operating parameter, overtemperature setting and the alarm condition of instrument are controlled, data are not lost after power-off.
As shown in figure 5, the function button circuit 7 is made of 4 function buttons, pull-up and current-limiting resistance, connect respectively
4 I/O mouthfuls of Key Up, Key Down, Key H, Key M of the microprocessor 5 of acquisition control circuit 2 are connected to, realize temperature controller
The inquiry and setting of parameter.
As shown in fig. 6, the LED digital-scroll techniques 8 select control circuit to form by 14 common anode charactrons and position, figure is it
In 1 LED charactrons and position select control circuit.The segment encode pin of charactron is connected to 8 I/O mouthfuls of SEG of microprocessor 5
A1 ~ SEG P1, position are selected control signal to be exported from 14 I/O mouthfuls of DIG1 ~ DIG14 timesharing of microprocessor 5, are driven by triode
The COM ends of every charactron, make everybody charactron Dynamic Announce in turn.
The LED digital-scroll techniques 8 further include 3 road monochromatic LED indicator lights, by the microprocessor 5 of acquisition control circuit 2
3 I/O mouthfuls of LED InLine, LED OutLine, LED WARN drive yellow, green, red LED indicator light respectively, and instruction is current
The operation of temperature controller and alarm condition.
As shown in fig. 7, the alarm output circuit 9 is made of miniature relay, buzzer and driving element, microprocessor
2 I/O mouthfuls of JDQ1, JDQ2 of device 5 drive 2 miniature relays by triode respectively, and it is outer to can access ventilation blower and siren etc.
Portion's troubleshooting equipment.The I/O mouth RB6 connection buzzers of microprocessor 5, prompt overtemperature alarm.
As shown in figure 8, the telecommunication circuit 3 includes two-way RS485 telecommunication circuits：RS485 telecommunication circuits are used for all the way
The numerical value of temperature sensor 4 is read, another way RS485 telecommunication circuits and exterior networking carry out data transmission.
The telecommunication circuit 3 is connected with the microprocessor 5 of acquisition control circuit 2.The telecommunication circuit 3 is by RS485
Conversion chip and peripheral circuit composition, are divided into the RS485 communication lines of two-way independence：It is all the way sensor interface, for reading
The numerical value of infrared temperature sensor 4, transmitting terminal TX, receiving terminal RX, the coupled resistance of control terminal RD of microprocessor are connected to
RS485 interface chips, communication A, B end of RS485 interface chips are equipped with anti-lightning strike and overcurrent proof misconnection protection circuit；Another way
For data communication interface, for the data transfer of outside networking, the receiving terminal RX of microprocessor connects after photoelectric coupler isolation
The receiver output pin 1 of RS485 interface chips is connected to, the transmitting terminal TX of microprocessor is connected to after photoelectric coupler isolation
RS485 interface chip receivers enable pin 2 and driver enables pin 3, the RS485 interfaces of another way RS485 telecommunication circuits
Communication A, B end of chip is equipped with anti-lightning strike and overcurrent proof misconnection protection circuit.Data communication interface circuit is supplied by second source
Electrical isolation is realized between electricity, with acquisition control circuit 2, avoids influencing temperature monitor entirety work because of the damage of data communication
Make.
The utility model uses above technical scheme, direct using digital infrared temperature sensor, discord measurand
Contact, it is fast response time, easy for installation；Temperature sensor transmits temperature value by digital communication mode, is not easy dry by the external world
Disturb, stability it is good；Temperature sensor is connected by Aviation Connector with telecommunication circuit, easy to debug and Quick overhaul；This reality
With the new data that can gather multiplex digital infrared temperature sensor, the detecting of multiple temperature spots in switchgear, number are realized
According to storage transmission, system operation show and fault alarm processing.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be directly or indirectly used in other
Technical field, is equally included in the patent within the scope of the utility model.
Claims (1)
- A kind of 1. switchgear digital temperature monitor, it is characterised in that：It includes power circuit, acquisition control circuit, communication If circuit and dry temperature sensor；The power circuit is acquisition control circuit, telecommunication circuit and temperature sensor provide electricity Source；The acquisition control circuit includes microprocessor and the data storage circuitry being connected with microprocessor, function button electricity Road, LED digital-scroll techniques and alarm output circuit, the microprocessor are connected with telecommunication circuit, and telecommunication circuit connects outside respectively If network and dry temperature sensor, the telecommunication circuit include two-way RS485 telecommunication circuits, RS485 telecommunication circuits are used for all the way The numerical value of microcomputer reads temperature sensor, another way RS485 telecommunication circuits be used for microprocessor and external network network into Row data transfer；Key position measures in the temperature sensor alignment switchgear, and the temperature sensing passes through boat Empty connector is connected with telecommunication circuit, and the temperature sensor is digital infrared temperature sensor, the power circuit For switching power supply, mutually independent first power supply of switching power supply output two-way and second source, the first power supply are to adopt Collect control circuit, all the way RS485 telecommunication circuits and temperature sensor and power supply is provided, second source is another for external network networking RS485 telecommunication circuits provide power supply all the way, and the acquisition control circuit is micro- by the PIC16F194X based on Microchip Manage device and peripheral circuit composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571715.1U CN207232674U (en) | 2017-05-22 | 2017-05-22 | A kind of switchgear digital temperature monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571715.1U CN207232674U (en) | 2017-05-22 | 2017-05-22 | A kind of switchgear digital temperature monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207232674U true CN207232674U (en) | 2018-04-13 |
Family
ID=61838486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720571715.1U Expired - Fee Related CN207232674U (en) | 2017-05-22 | 2017-05-22 | A kind of switchgear digital temperature monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207232674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109429744A (en) * | 2018-11-12 | 2019-03-08 | 郑州源创智控有限公司 | Silo Multifunction ventilated system controller |
-
2017
- 2017-05-22 CN CN201720571715.1U patent/CN207232674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109429744A (en) * | 2018-11-12 | 2019-03-08 | 郑州源创智控有限公司 | Silo Multifunction ventilated system controller |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |