CN207675826U - A kind of power line carrier module transmission size of current detection device - Google Patents
A kind of power line carrier module transmission size of current detection device Download PDFInfo
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- CN207675826U CN207675826U CN201721583775.1U CN201721583775U CN207675826U CN 207675826 U CN207675826 U CN 207675826U CN 201721583775 U CN201721583775 U CN 201721583775U CN 207675826 U CN207675826 U CN 207675826U
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- resistance
- line carrier
- carrier module
- amplifier
- power line
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Abstract
A kind of power line carrier module transmission size of current detection device, including red diode D1, green diode D2, control chip MCU, sampling and equal proportion circuit and current regulating circuit, sampling and equal proportion electricity routing resistance R1 and resistance R2 compositions, current regulating circuit is made of amplifier U1 and Darlington triode Q1, using can be judged data according to the threshold value in control chip MCU set by user, and intuitively show judging result using diode, the production detection field particularly suitable for power line carrier module.
Description
Technical field
The utility model is related to power line carrier module detections, particularly relate to a kind of power line carrier module transmission electric current
Size detection device.
Background technology
Power line carrier module is the important component of Intelligent central chart register system, and State Grid Corporation of China carries power line
The quiescent dissipation of wave module, dynamic power consumption have stringent limitation.The transmission size of current of power line carrier module directly determines
The size of carrier wave transmission power, to influence the effect of communication.So one of the design and producing difficult point of power line carrier module
It is how to improve carrier wave transmission power to greatest extent under conditions of sending current limit.
Market there is no the detection device that electric current is sent specifically for power line carrier module at present.This results in the life of module
Production producer lacks the basis for estimation to module communication effect, to be difficult to control the quality of production of product.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of power line carrier module transmission size of current detection dress
It sets, data can be judged according to the threshold value in control chip MCU set by user, and intuitively shown using diode
Go out judging result, the production detection field particularly suitable for power line carrier module.
To realize the above-mentioned technical purpose, used technical solution is：A kind of power line carrier module transmission size of current
Detection device, including red diode D1, green diode D2, control chip MCU, sampling and equal proportion circuit and current regulation
Circuit, sampling and equal proportion electricity routing resistance R1 and resistance R2 compositions, current regulating circuit is by three pole amplifier U1 and Darlington
Pipe Q1 compositions, the ends VCC of one end access power line carrier module of resistance R1, another termination+12V power supplys of resistance R1, resistance
A termination+12V power supplys of R2, the in-phase input end of the other end access amplifier U1 of resistance R2, the anti-phase input of amplifier U1
End is linked on the circuit between resistance R1 and the ends VCC of power line carrier module, output end and the Darlington three of amplifier U1
The base stage of pole pipe Q1 is connected, and the collector of Darlington triode Q1 accesses to the in-phase input end of amplifier U1, three pole of Darlington
The emitter of pipe Q1 is grounded after connecting with resistance R3, and the ends AD of control chip MCU are connect with the emitter of Darlington triode Q1,
The ends IO1 the series resistance R4 and red diode D1 of control chip MCU is followed by power supply, the ends the IO2 series resistance of control chip MCU
R5 and green diode D2 are followed by power supply.
The utility model advantageous effect is：Detection device provided by the utility model, by resistance, amplifier, Darlington three
Pole pipe, MCU, light emitting diode composition.The wherein sampling of resistance composition and equal proportion circuit, amplifier and triode form electric current tune
Economize on electricity road converts the current into voltage value feeding MCU progress Analog-digital Converters using resistance and is judged, judging result is logical
Light emitting diode is crossed intuitively to show.The present apparatus realizes the inspection of automation on the basis of accurate control important parameter index
It surveys, there is far reaching significance to enterprise's production.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model.
Specific implementation mode
As shown in Figure 1, a kind of power line carrier module sends size of current detection device, including it is red diode D1, green
Color diode D2, control chip MCU, sampling and equal proportion circuit and current regulating circuit, sampling and equal proportion electricity routing resistance
R1 and resistance R2 compositions, current regulating circuit are made of amplifier U1 and Darlington triode Q1, one end access electricity of resistance R1
The ends VCC of line of force carrier module, another termination+12V power supplys of resistance R1, a termination+12V power supplys of resistance R2, resistance R2's
The other end accesses the in-phase input end of amplifier U1, and the inverting input of amplifier U1 is linked into resistance R1 and power line carrier mould
On circuit between the ends VCC of block, the base stage of the output end and Darlington triode Q1 of amplifier U1 is connected, Darlington triode
The collector of Q1 accesses to the in-phase input end of amplifier U1, and the emitter of Darlington triode Q1 is connected with resistance R3 to be followed by
The ends AD on ground, control chip MCU are connect with the emitter of Darlington triode Q1, the ends the IO1 series resistance R4 of control chip MCU
It is followed by power supply with red diode D1, the ends IO2 the series resistance R5 and green diode D2 of control chip MCU are followed by power supply.
Known by Fig. 1, in the case where device is not inserted into power line carrier module, electric current I1=0, Va=Vb=12V, root
According to the characteristic of amplifier, Va=Vc=12V at this time, so electric current I2=0.The electric current I3=0 of resistance R3 is so flowed through, is sent into
The voltage of the A/D interface of MCU is that the result that 0, MCU is sampled is exactly 0.Two LED light are not lighted at this time.
After power line carrier module is inserted into detection device operation, can be generated on sampling resistor R1 by sending electric current I1 by one
Pressure drop：Vab=R1 × I1
So reverse input end voltage of amplifier：
V_=12-Vab
According to amplifier characteristic：V+=V_, flow through the electric current of resistance R2：
Electric current I2 generates a voltage on Current Voltage translated resistance R3：
It is ultimately delivered to the voltage of the A/D interface of MCU, only and sampling resistor has the simple ratio of presentation with actual current
Example relationship.Current data after being converted by simulation numeral is compared with threshold value set by user, is met the requirements by MCU
In the case of light green light, be unsatisfactory for require in the case of light red colored lamp.To realize the automated execution to test process,
With the intuitive display of test result.
It is logical that the error main source of the device is that amplifier U1 will produce a low current Ib driving Darlington triode Q1
Overcurrent I2.According to the characteristic of Darlington triode,
I2=β × Ib, wherein β >=10000,
So actually
I3=I2+Ib
So error
To sum up, which is directed in production and checkout procedure and is capable of providing to the transmission size of current of power line carrier module
A kind of high-precision, the detection method of automation.It is not only able to greatly improve production efficiency, and creation data can be carried out
More accurate control has far reaching significance to enterprise's production.
Claims (1)
1. a kind of power line carrier module sends size of current detection device, it is characterised in that：Including red diode D1, green
Diode D2, control chip MCU, sampling and equal proportion circuit and current regulating circuit, sampling and equal proportion electricity routing resistance R1
It is formed with resistance R2, current regulating circuit is made of amplifier U1 and Darlington triode Q1, and electric power is accessed in one end of resistance R1
The ends VCC of line carrier module, another termination+12V power supplys of resistance R1, a termination+12V power supplys of resistance R2, resistance R2's is another
The in-phase input end of amplifier U1 is accessed in one end, and the inverting input of amplifier U1 is linked into resistance R1 and power line carrier module
The ends VCC between circuit on, the base stage of the output end and Darlington triode Q1 of amplifier U1 is connected, Darlington triode Q1
Collector access to the in-phase input end of amplifier U1, the emitter of Darlington triode Q1 is grounded after connecting with resistance R3,
The ends AD of control chip MCU connects with the emitter of Darlington triode Q1, control the ends the IO1 series resistance R4 of chip MCU with
Red diode D1 is followed by power supply, and the ends IO2 the series resistance R5 and green diode D2 of control chip MCU are followed by power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583775.1U CN207675826U (en) | 2017-11-23 | 2017-11-23 | A kind of power line carrier module transmission size of current detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583775.1U CN207675826U (en) | 2017-11-23 | 2017-11-23 | A kind of power line carrier module transmission size of current detection device |
Publications (1)
| Publication Number | Publication Date |
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| CN207675826U true CN207675826U (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721583775.1U Active CN207675826U (en) | 2017-11-23 | 2017-11-23 | A kind of power line carrier module transmission size of current detection device |
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| CN (1) | CN207675826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008181A (en) * | 2017-11-23 | 2018-05-08 | 联桥科技有限公司 | A kind of power line carrier module sends size of current detection device |
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2017
- 2017-11-23 CN CN201721583775.1U patent/CN207675826U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008181A (en) * | 2017-11-23 | 2018-05-08 | 联桥科技有限公司 | A kind of power line carrier module sends size of current detection device |
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