CN206002223U - Network distribution transformer temperature monitoring system - Google Patents
Network distribution transformer temperature monitoring system Download PDFInfo
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- CN206002223U CN206002223U CN201621065989.5U CN201621065989U CN206002223U CN 206002223 U CN206002223 U CN 206002223U CN 201621065989 U CN201621065989 U CN 201621065989U CN 206002223 U CN206002223 U CN 206002223U
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Abstract
This utility model is related to a kind of network distribution transformer temperature monitoring system, including：Power circuit, temperature sensing circuit, processing module and the first wireless communication module, described power circuit is connected with described temperature sensing circuit, described processing module and described first wireless communication module respectively.Temperature detection is carried out in power distribution network transformer field by temperature sensing circuit, processing module calculates temperature according to the change in voltage of temperature sensing circuit and forms signal, and long-range monitoring client is sent the signal to by wireless transmitter module, achieve the long-range monitor in real time of the temperature to power distribution network transformator, effectively increase the efficiency of monitoring temperature.
Description
Technical field
This utility model is related to power distribution network control technology field, particularly to network distribution transformer temperature monitoring system.
Background technology
Find the delivery of operation equipment over loading or there is the situation that loose contact leads to generate heat, power system industry for timely
Using equipment thermometric as a daily tour job, especially need to carry out thermometric to power distribution network transformator.At present, obtain distribution
The method of the outlet joint temperature of transformator is obtained by infrared exoelectron rifle, although thermometric work is simple, in power distribution network
In network, transformator distribution dispersion, large number of, therefore, traditional employing infrared exoelectron rifle temperature measuring efficiency is low, and time-consuming, flower
Take that manpower is big, poor real.
Utility model content
Based on this it is necessary to for traditional defect that power distribution network transformator is carried out with thermometric mode inefficiency, provide
A kind of network distribution transformer temperature monitoring system.
A kind of network distribution transformer temperature monitoring system, including：Power circuit, temperature sensing circuit, processing module and first
Wireless communication module, described power circuit respectively with described temperature sensing circuit, described processing module and described first channel radio
Letter module connects, and described temperature sensing circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, thermal resistance R6, electricity
Resistance R7, electric capacity C1, electric capacity C2 and operational amplifier, described resistance R2 is connected with the outfan of described power circuit, described resistance
R2 is connected with described resistance R7, described resistance R7 ground connection, and described resistance R1 is in parallel with described resistance R2, described resistance R1 with described
Thermal resistance R6 connects, described thermal resistance R6 ground connection, the reverse input end of described operational amplifier pass sequentially through described resistance R3 and
Described resistance R2 connects to the outfan of described power circuit, and the input in the same direction of described operational amplifier passes sequentially through resistance R5
Connect with resistance R1 to the outfan of described power circuit, the outfan of described operational amplifier passes through resistance R4 and described process
Module connects, and the power end of described operational amplifier is connected with the outfan of described power circuit, and is grounded by electric capacity C1, institute
The earth terminal stating operational amplifier is grounded by electric capacity C2.
In one embodiment, described power circuit includes battery plate interface J1, battery interface J2, diode D1 and voltage stabilizing
Circuit, described battery plate interface J1 is used for being connected with solar panel, and described battery interface J2 is used for being connected with accumulator, institute
The positive pole stating battery plate interface J1 with described diode D1 is connected, and the negative pole of described battery interface J2 and described diode D1 is even
Connect, the described negative pole of diode D1 is connected with the input of mu balanced circuit, the outfan of described mu balanced circuit is used for as described
The outfan of power circuit.
In one embodiment, described mu balanced circuit includes electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7 and voltage stabilizing chip
The negative pole of VR1, described diode D1 respectively with one end of described electric capacity C4, one end of described electric capacity C5, described electric capacity C6 one
End, the input of one end of described electric capacity C7 and voltage stabilizing chip VR1 connect, the other end of described electric capacity C4, described electric capacity C5
The other end, the earth terminal of the other end of described electric capacity C6, the other end of described electric capacity C7 and described voltage stabilizing chip VR1 connect respectively
Ground, the outfan of described voltage stabilizing chip VR1 is used for the outfan as described power circuit.
In one embodiment, described processing module includes single-chip microcomputer STC12C5410AD.
In one embodiment, the ADC0 stitch of described single-chip microcomputer is connected with the outfan of described operational amplifier.
In one embodiment, described first wireless communication module includes nRF24L01 wireless module.
In one embodiment, the first stitch ground connection, the second stitch and the described power supply of described nRF24L01 wireless module
The outfan of circuit connects, the 3rd stitch, the 4th stitch, the 5th stitch, the 6th stitch, the 7th stitch and the 8th stitch respectively with
27th stitch of described processing module, the 15th stitch, the 26th stitch, the second stitch, the 25th stitch and
One stitch connects.
In one embodiment, described network distribution transformer temperature monitoring system also includes analog-to-digital conversion module, described temperature
Testing circuit is connected with described processing module by described analog-to-digital conversion module.
In one embodiment, described network distribution transformer temperature monitoring system also includes the second wireless communication module, described
Second wireless communication module is connected with described first wireless communication module by wireless network.
In one embodiment, described network distribution transformer temperature monitoring system also includes display module, described display module
It is connected with described second wireless communication module.
Above-mentioned network distribution transformer temperature monitoring system, enters trip temperature by temperature sensing circuit in power distribution network transformer field
Detection, processing module calculates temperature according to the change in voltage of temperature sensing circuit and forms signal, and will by wireless transmitter module
Signal sends to long-range monitoring client the long-range monitor in real time it is achieved that temperature to power distribution network transformator, effectively increases
The efficiency of monitoring temperature.
Brief description
Fig. 1 is the module frame chart of the network distribution transformer temperature monitoring system of an embodiment；
Fig. 2 is the circuit theory diagrams of the temperature sensing circuit of an embodiment；
Fig. 3 is the circuit theory diagrams of the power circuit of an embodiment；
Fig. 4 is the chip diagrams illustrating stitches of the processing module of an embodiment；
Fig. 5 is the chip diagrams illustrating stitches of the first wireless communication module of an embodiment；
Fig. 6 is the module frame chart of the network distribution transformer temperature monitoring system of another embodiment；
Fig. 7 is the monitoring schematic flow sheet of the network distribution transformer temperature monitoring system of an embodiment.
Specific embodiment
For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is more fully retouched
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, this utility model can come real in many different forms
Existing however it is not limited to embodiment described herein.On the contrary, providing the purpose of these embodiments to be to make to public affairs of the present utility model
The understanding opening content is more thoroughly comprehensive.
As shown in figure 1, it is a kind of network distribution transformer temperature monitoring system of an embodiment, including：Power circuit, temperature
Testing circuit, processing module and the first wireless communication module, described power circuit respectively with described temperature sensing circuit, described place
Reason module and described first wireless communication module connect, as shown in Fig. 2 described temperature sensing circuit include resistance R1, resistance R2,
Resistance R3, resistance R4, resistance R5, thermal resistance R6, resistance R7, electric capacity C1, electric capacity C2 and operational amplifier, described resistance R2 and institute
The outfan stating power circuit connects, and described resistance R2 connect with described resistance R7, and described resistance R7 is grounded, described resistance R1 and
Described resistance R2 is in parallel, and described resistance R1 is connected with described thermal resistance R6, described thermal resistance R6 ground connection, described operational amplifier
Reverse input end passes sequentially through described resistance R3 and described resistance R2 and connects to the outfan of described power circuit, and described computing is put
The input in the same direction of big device passes sequentially through resistance R5 and resistance R1 and connects to the outfan of described power circuit, described operation amplifier
The outfan of device is connected with described processing module by resistance R4, the power end of described operational amplifier and described power circuit
Outfan connects, and is grounded by electric capacity C1, and the earth terminal of described operational amplifier is grounded by electric capacity C2.
For example, the outfan of described power circuit, resistance R2 and resistance R7 sequential series and resistance R7 ground connection, described power supply
The outfan of circuit, resistance R1 and thermal resistance R6 sequential series and thermal resistance R6 ground connection, and, resistance R1 is in parallel with resistance R2,
The outfan of described power circuit, the reverse input end sequential series of resistance R2, resistance R3 and operational amplifier, described power supply electricity
The input sequential series in the same direction of the outfan on road, resistance R1, resistance R5 and operational amplifier, the first wireless communication module and place
Reason module connects, and processing module is connected with the outfan of operational amplifier by resistance R4.
Wherein, as shown in Fig. 2 resistance R1, resistance R2, resistance R7 are three high accuracy valued resistor, thermal resistance R6 is
PT100 temperature sensor, resistance R1, resistance R2, resistance R6 and resistance R7 form an electric bridge, operational amplifier model
AD620BR, it is a high-precision operational amplifier, and in the present embodiment, this operational amplifier does voltage follower effect,
Bridge output voltage is not amplified.Because operational amplifier has the characteristic of high input impedance, can be considered resistance R3, resistance
R5 shunt current is 0, then, in Fig. 2, the voltage difference of A, B point-to-point transmission is UAB=UR2, then the resistance of thermal resistance R6 (PT100) with
Temperature respective function relation is
Y=0.388x+100, formula 1
Wherein, y is the resistance of thermal resistance R6, unit Ω, and x is temperature, unit DEG C.
As shown in Figure 2, operational amplifier output terminal VIN output voltage and the voltage relationship of power circuit output end are：
The temperature value that thermal resistance R6 is power distribution network transformator can be calculated by formula 1, formula 2.
In the present embodiment, temperature detection, processing module root are carried out in power distribution network transformer field by temperature sensing circuit
Calculate temperature according to the change in voltage of temperature sensing circuit and form signal, and sent the signal to by wireless transmitter module long-range
Monitoring client, it is achieved that the long-range monitor in real time of temperature to power distribution network transformator, effectively increases the efficiency of monitoring temperature.
In order to realize the power supply to temperature sensing circuit, processing module and the first wireless communication module, in an embodiment
In, as shown in figure 3, described power circuit includes battery plate interface J1, battery interface J2, diode D1 and mu balanced circuit, described
Battery plate interface J1 is used for being connected with solar panel, and described battery interface J2 is used for being connected with accumulator, described cell panel
Interface J1 is connected with the positive pole of described diode D1, and described battery interface J2 is connected with the negative pole of described diode D1, and described two
The negative pole of pole pipe D1 is connected with the input of mu balanced circuit, and the outfan of described mu balanced circuit is used for as described power circuit
Outfan.
During work, described battery plate interface J1 is connected with solar panel, and described battery interface J2 is connected with accumulator,
Solar panel is converted to electric energy after obtaining solar energy, to storage battery power supply, and accumulator is charged, and the electric energy of accumulator leads to
Cross mu balanced circuit to export to temperature sensing circuit, processing module and the first wireless communication module, to temperature sensing circuit, process mould
Block and the first wireless communication module power supply.Diode D1 is prevented from accumulator to solar panel reverse charge, fills in light
Powered from solar panel in the case of foot and charge to accumulator, and by storage battery power supply during insufficient light.In such manner, it is possible to
Realize to temperature sensing circuit, processing module and the permanently effective power supply of the first wireless communication module.
In order to export to after the voltage of accumulator and the voltage voltage stabilizing of solar panel, in one embodiment, please again
Secondary referring to Fig. 3, described mu balanced circuit includes electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7 and voltage stabilizing chip VR1, described diode
The negative pole of D1 respectively with one end of described electric capacity C4, one end of described electric capacity C5, one end of described electric capacity C6, described electric capacity C7
The input of one end and voltage stabilizing chip VR1 connects, the other end of described electric capacity C4, the other end of described electric capacity C5, described electric capacity
The earth terminal of the other end of C6, the other end of described electric capacity C7 and described voltage stabilizing chip VR1 is grounded respectively, described voltage stabilizing chip
The outfan of VR1 is used for the outfan as described power circuit.In the present embodiment, voltage stabilizing chip VR1 is by solar panel
Or the voltage conversion of accumulator becomes 3.3V.For example, this power circuit also includes switching S1, and the negative pole of described diode D1 passes through to open
Close S1 respectively with one end of described electric capacity C4, one end of described electric capacity C5, one end of described electric capacity C6, described electric capacity C7 one end
Connect with the input of voltage stabilizing chip VR1, be capable of by switch S1 wireless to temperature sensing circuit, processing module and first
The power supply of communication module and power-off, thus realize controlling the opening and closing of above-mentioned module.
In one embodiment, as shown in figure 4, described processing module includes single-chip microcomputer STC12C5410AD.
Single-chip microcomputer STC12C5410AD is the single-chip microcomputer of enhancement mode, and this model single-chip microcomputer is widely used in engineering field.Cause
Its port has analog-digital conversion function, build during circuit need not external analog-digital converter again, therefore adopt this single-chip microcomputer
STC12C5410AD can simplify circuit to a certain extent.For example, the ADC0 stitch of described single-chip microcomputer and described operational amplifier
Outfan connect.
In one embodiment, as shown in figure 5, described first wireless communication module includes nRF24L01 wireless module.Please
In conjunction with Fig. 4 and Fig. 5, the first stitch ground connection of described nRF24L01 wireless module, the output of the second stitch and described power circuit
End connect, the 3rd stitch, the 4th stitch, the 5th stitch, the 6th stitch, the 7th stitch and the 8th stitch respectively with described process mould
27th stitch of block, the 15th stitch, the 26th stitch, the second stitch, the 25th stitch and the first stitch connect,
For example, the 3rd stitch of nRF24L01 wireless module, the 4th stitch, the 5th stitch, the 6th stitch, the 7th stitch and the 8th stitch
Respectively with the P2.1 stitch of described single-chip microcomputer STC12C5410AD, P2.6 stitch, P2.0 stitch, P2.3 stitch, P1.7 stitch with
And P2.2 stitch connects.
First stitch ground connection of this nRF24L01 wireless module, the second stitch connects the outfan of power circuit, the 3rd stitch
Select (receive or launch) for mode of operation, the 4th stitch is Enable Pin, the 5th stitch is SPI clock, the 6th stitch is that SPI is defeated
Enter, the 7th stitch exports for SPI, the 8th stitch is interrupt output.
NRF24L01 wireless module working frequency range between 2.4GHz～2.5GHz, data volume is less, communication distance is short
When there is very high cost performance.NRF24L01 wireless module built-in crystal oscillator, frequency synthesizer, manipulator, power are put
The functional modules such as big device, have the functions such as output, communication channel tune.This module has the advantages that low-power consumption, is especially suitable for
The mode of solaode combination power supply, when power emission is -6dBm, the operating current of module only has 9mA, is in reception shape
During state, its electric current only has 12.3mA.Meanwhile, energy-conservation is made to set using multiple low-power working modes (power-down mode and idle pulley)
Meter is more convenient.
In order to realize the numerical value of change in voltage is converted to digital signal, in one embodiment, described network distribution transformer
Temperature monitoring system also includes analog-to-digital conversion module, and described temperature sensing circuit is by described analog-to-digital conversion module and described process
Module connects.In such manner, it is possible to the analogue signal that temperature sensing circuit is produced be converted to digital signal, be easy to processing module
Calculate.
In order to realize the long-range reception of the signal to the first wireless communication module transmitting, in one embodiment, as Fig. 6 institute
Show, described network distribution transformer temperature monitoring system also includes the second wireless communication module, described second wireless communication module passes through
Wireless network is connected with described first wireless communication module.For example, this monitoring client arranges the second wireless communication module, this first nothing
Line communication module is used for the second wireless communication module sending signal, and the second wireless communication module is used for receiving by the first channel radio
The signal that letter module sends, so, monitoring client can receive, by the second wireless communication module, the temperature that remotely (live) monitors
Degree, realizes the remote monitoring of the temperature to power distribution network transformator.
As shown in fig. 7, the monitoring flow process in receiving terminal comprises the steps：
Step a, arranges transformator number.
In the present embodiment, one temperature sensing circuit of each transformator correspondence, processing module and the first radio communication
Module.
Step b, sends acquisition instructions.
In this step, acquisition instructions are sent to the first wireless communication module by the second wireless communication module.So process
After module receives instruction, processing module receives the signal of temperature sensing circuit.
Step c, receiving data.
In this step, the second wireless communication module receives the detection signal that the first wireless communication module sends.
Step d, data translation.
Detection signal is translated as displayable temperature data by monitoring client.
Step e, temperature shows.
Temperature data is shown by monitoring client by display module, is easy to user and checks.
In order to efficiently and easily show the monitoring temperature situation of power distribution network transformator, in one embodiment, please join again
See Fig. 6, described network distribution transformer temperature monitoring system also includes display module, described display module and described second radio communication
Module connects.For example, this monitoring client is provided with display module, and this display module is used for what display second wireless communication module received
Signal, for example, is changed by signal, is shown this temperature detection signal with patterned way.
A specific embodiment of data processing is presented herein below：
System data processing procedure
(1) write of data
Data write is the selection in order to enter line transformer, after selecting transformator, encoded, then by serial ports to bottom
Machine sends.
(2) digital independent
The information of digital independent serial ports, through decoding, then by display control show, simultaneously by with definite value ratio
Relatively, if temperature is higher than definite value, warning signal, stand by lamp shiny red are sent, if being less than temperature definite value, stand by lamp bright green.
(3) data encoding
A, instruction encoding
Instruction encoding refers to send for selecting to gather the coding of which platform transformer temperature from system to slave computer, and instruction is compiled
Code is made up of 4 bytes, and the 1st byte is heading, is fixed as aaH, and middle two bytes are transformator address, can use
0000H-FFFEH, last 1 byte is stop element, is fixed as FFH, shown in its structural table 1.
Table 1 instructs frame format
Data encoding refers to the temperature data of corresponding transformator being sent from slave computer to system, and data encoding is by 5 words
Section composition, the 1st byte is heading, is fixed as aaH, and the 2nd byte is A phase temperature data, desirable 00H-FEH, the 3rd number
According to for B phase temperature data, desirable 00H-FEH, the 4th is C phase temperature data, desirable 00H-FEH, and last 1 byte is to stop
Symbol, is fixed as FFH, shown in its structural table 2.
| 1 byte | aaH | Heading |
| 2 bytes | 00H-FFH | A phase temperature |
| 3 bytes | 00H-FEH | B phase temperature |
| 4 bytes | 00H-FEH | C phase temperature |
| 5 bytes | FFH | Stop element |
Table 2 instructs frame format
It should be noted that in said system embodiment, included modules simply carry out drawing according to function logic
Point, but it is not limited to above-mentioned division, as long as being capable of corresponding function；In addition, each functional unit is concrete
Title also only to facilitate mutual distinguish, is not limited to protection domain of the present utility model.
In addition, one of ordinary skill in the art will appreciate that realizing all or part of step in the various embodiments described above method
The program that can be by complete come the hardware to instruct correlation, and corresponding program can be stored in read/write memory medium.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics does not move
Dynamic contradiction, is all considered to be the scope of this specification record.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, some deformation can also be made and improve, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (10)
1. a kind of network distribution transformer temperature monitoring system is it is characterised in that include：Power circuit, temperature sensing circuit, process mould
Block and the first wireless communication module, described power circuit respectively with described temperature sensing circuit, described processing module and described
One wireless communication module connects, and described temperature sensing circuit includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, heat
Resistance R6, resistance R7, electric capacity C1, electric capacity C2 and operational amplifier, described resistance R2 is connected with the outfan of described power circuit,
Described resistance R2 is connected with described resistance R7, described resistance R7 ground connection, and described resistance R1 is in parallel with described resistance R2, described resistance
R1 is connected with described thermal resistance R6, described thermal resistance R6 ground connection, and the reverse input end of described operational amplifier passes sequentially through described
Resistance R3 and described resistance R2 connects to the outfan of described power circuit, and the input in the same direction of described operational amplifier leads to successively
Cross resistance R5 and resistance R1 to connect to the outfan of described power circuit, the outfan of described operational amplifier pass through resistance R4 with
Described processing module connects, and the power end of described operational amplifier is connected with the outfan of described power circuit, and passes through electric capacity
C1 is grounded, and the earth terminal of described operational amplifier is grounded by electric capacity C2.
2. network distribution transformer temperature monitoring system according to claim 1 is it is characterised in that described power circuit includes electricity
Pond plate interface J1, battery interface J2, diode D1 and mu balanced circuit, described battery plate interface J1 is used for solar panel even
Connect, described battery interface J2 is used for being connected with accumulator, and described battery plate interface J1 is connected with the positive pole of described diode D1, institute
The negative pole stating battery interface J2 with described diode D1 is connected, and the negative pole of described diode D1 is connected with the input of mu balanced circuit
Connect, the outfan of described mu balanced circuit is used for the outfan as described power circuit.
3. network distribution transformer temperature monitoring system according to claim 2 is it is characterised in that described mu balanced circuit includes electricity
Hold C4, electric capacity C5, electric capacity C6, electric capacity C7 and voltage stabilizing chip VR1, the negative pole of described diode D1 respectively with described electric capacity C4 one
End, one end of described electric capacity C5, the input of one end of described electric capacity C6, one end of described electric capacity C7 and voltage stabilizing chip VR1 connect
Connect, the other end of described electric capacity C4, the other end of described electric capacity C5, the other end of described electric capacity C6, described electric capacity C7 another
The earth terminal of end and described voltage stabilizing chip VR1 is grounded respectively, and the outfan of described voltage stabilizing chip VR1 is used for as described power supply electricity
The outfan on road.
4. network distribution transformer temperature monitoring system according to claim 1 is it is characterised in that described processing module includes list
Piece machine STC12C5410AD.
5. network distribution transformer temperature monitoring system according to claim 4 is it is characterised in that the ADC0 pin of described single-chip microcomputer
Foot is connected with the outfan of described operational amplifier.
6. network distribution transformer temperature monitoring system according to claim 4 is it is characterised in that described first radio communication mold
Block includes nRF24L01 wireless module.
7. network distribution transformer temperature monitoring system according to claim 6 is it is characterised in that the wireless mould of described nRF24L01
First stitch ground connection of block, the second stitch is connected with the outfan of described power circuit, the 3rd stitch, the 4th stitch, the 5th pin
Foot, the 6th stitch, the 7th stitch and the 8th stitch respectively with the 27th stitch of described processing module, the 15th stitch,
26 stitch, the second stitch, the 25th stitch and the first stitch connect.
8. network distribution transformer temperature monitoring system according to claim 1 is it is characterised in that described network distribution transformer temperature
Monitoring system also includes analog-to-digital conversion module, and described temperature sensing circuit is by described analog-to-digital conversion module and described processing module
Connect.
9. network distribution transformer temperature monitoring system according to claim 1 is it is characterised in that described network distribution transformer temperature
Monitoring system also includes the second wireless communication module, and it is wireless with described first that described second wireless communication module passes through wireless network
Communication module connects.
10. network distribution transformer temperature monitoring system according to claim 9 is it is characterised in that described network distribution transformer temperature
Degree monitoring system also includes display module, and described display module is connected with described second wireless communication module.
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| CN201621065989.5U CN206002223U (en) | 2016-09-19 | 2016-09-19 | Network distribution transformer temperature monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621065989.5U CN206002223U (en) | 2016-09-19 | 2016-09-19 | Network distribution transformer temperature monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505521A (en) * | 2017-08-10 | 2017-12-22 | 中国科学院上海高等研究院 | The passive and wireless temperature rise sensor and detection method for temperature rise of a kind of power distribution network transformer |
-
2016
- 2016-09-19 CN CN201621065989.5U patent/CN206002223U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505521A (en) * | 2017-08-10 | 2017-12-22 | 中国科学院上海高等研究院 | The passive and wireless temperature rise sensor and detection method for temperature rise of a kind of power distribution network transformer |
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