CN206638726U - Two-way series-type voltage sensor - Google Patents
Two-way series-type voltage sensor Download PDFInfo
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- CN206638726U CN206638726U CN201720174515.2U CN201720174515U CN206638726U CN 206638726 U CN206638726 U CN 206638726U CN 201720174515 U CN201720174515 U CN 201720174515U CN 206638726 U CN206638726 U CN 206638726U
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Abstract
The utility model discloses a kind of two-way series-type voltage sensor; microprocessor, voltage acquisition passage, communication channel, power supply circuit and computer; voltage acquisition passage, communication channel and power supply circuit are connected with microprocessor; microprocessor is also connected with computer, for computer export standard signal; voltage acquisition passage includes control source interface, signal isolation input circuit and ADC change-over circuits, and communication channel includes communication interface protection circuit, communication interface circuit, DC/DC isolation circuits and photoelectric coupling circuit；Power supply circuit includes transformer, rectifier bridge, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electric capacity, inductance, the first voltage-stabiliser tube, the second diode, triode and switching regulator IC.Implement two-way series-type voltage sensor of the present utility model, have the advantages that：The safety and reliability of circuit is higher.
Description
Technical field
Voltage sensor field is the utility model is related to, more particularly to a kind of two-way series-type voltage sensor.
Background technology
Voltage sensor is that tested electrical parameter is converted into DC current, DC voltage and isolation and amplifier simulation letter by one kind
Number or data signal device.Voltage sensor is used to measure wave distortion in power network more serious voltage or current signal,
The nonsinusoidal waveforms such as square wave, triangular wave can be measured.Hall voltage sensor is that one kind utilizes Hall effect, and original edge voltage is led to
External or built-in resistor is crossed, is limited current in 10mA, this electric current passes through after multicircuit winding, by poly- magnetic material that primary side is electric
Magnetic field caused by stream is detected by the Hall element in air gap, and induces corresponding electromotive force, and the electromotive force passes through the regulation of electrical circuit
After feed back to bucking coil and then compensation, (tested voltage passes through current-limiting resistance for magnetic flux caused by the bucking coil and primary current
Produce) caused by magnetic flux it is equal in magnitude, in the opposite direction, so as in magnetic core keep magnetic flux be zero.Traditional voltage sensor by
In lacking circuit protection function, cause the safety and reliability of circuit relatively low.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of prior art, there is provided a kind of circuit
The higher two-way series-type voltage sensor of safety and reliability.
Technical scheme is used by the utility model solves its technical problem：Construct a kind of two-way series-type voltage sensing
Device, including microprocessor, voltage acquisition passage, communication channel, power supply circuit and computer, the voltage acquisition passage, communication
Passage and power supply circuit are connected with the microprocessor, and the microprocessor is also connected with the computer, for described
Computer export standard signal, the voltage acquisition passage include control source interface, signal isolation input circuit and ADC conversions
Circuit, the control source interface connect micro- place after passing sequentially through the signal isolation input circuit and ADC change-over circuits
Device is managed, the communication channel includes communication interface protection circuit, communication interface circuit, DC/DC isolation circuits and photoelectric coupling electricity
Road, the DC/DC isolation circuits and photoelectric coupling circuit are in parallel, and one end in parallel is connected with the microprocessor, and in parallel is another
One end is connected by the communication interface circuit with the communication interface protection circuit；
The power supply circuit includes transformer, rectifier bridge, first resistor, second resistance, 3rd resistor, the 4th resistance, the
Five resistance, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electric capacity, inductance, the first voltage-stabiliser tube, the second diode, triode and
Switching regulator IC, the both ends input ACs electricity of the primary coil of the transformer, the first port of the rectifier bridge with it is described
One end connection of the secondary coil of transformer, the 3rd port of the rectifier bridge and the other end of the secondary coil of the transformer
Connection, the second port of the rectifier bridge one end with the 5th resistance, the negative pole of the first voltage-stabiliser tube, the 3rd electric capacity respectively
One end connects with the first pin of switching regulator IC, the other end of the 5th resistance and the positive pole of first electrochemical capacitor
Connection, the 4th port of the rectifier bridge is connected by the 4th resistance with the negative pole of first electrochemical capacitor, and described the
The positive pole of one voltage-stabiliser tube is connected with the base stage of the triode and one end of second resistance respectively by the first resistor, described
The negative pole of the other end of second resistance and the emitter stage of triode with first electrochemical capacitor is connected, the collection of the triode
Electrode is connected with the 5th pin of the switching regulator IC and the other end of the 3rd electric capacity respectively by the 3rd resistor, institute
State the 3rd pin ground connection of switching regulator IC, the second pin of the switching regulator IC respectively with second diode
Negative electrode is connected with one end of inductance, and the other end of the inductance is connected with the positive pole of second electrochemical capacitor, and the described 2nd 2
The anode of pole pipe is connected with the negative pole of second electrochemical capacitor, the 4th pin of the switching regulator IC respectively with the electricity
The other end of sense connects with microprocessor.
In two-way series-type voltage sensor described in the utility model, the power supply circuit also includes the 6th resistance,
One end of 6th resistance is connected with one end of the 3rd electric capacity, the other end and the switch voltage-stabilizing of the 6th resistance
The first pin connection of chip.
In two-way series-type voltage sensor described in the utility model, the power supply circuit also includes the 7th resistance,
3rd pin of the switching regulator IC is connected by the 7th resistance with the emitter stage of the triode.
In two-way series-type voltage sensor described in the utility model, the power supply circuit also includes the 8th resistance,
One end of 8th resistance is connected with the second pin of the switching regulator IC, the other end of the 8th resistance with it is described
The negative electrode connection of second diode.
In two-way series-type voltage sensor described in the utility model, the power supply circuit also includes the 9th resistance,
4th pin of the switching regulator IC is connected by the 9th resistance with the microprocessor.
In two-way series-type voltage sensor described in the utility model, the triode is NPN type triode.
Implement two-way series-type voltage sensor of the present utility model, have the advantages that：Due to provided with including micro-
Processor, voltage acquisition passage, communication channel, power supply circuit and computer, voltage acquisition passage include control source interface, letter
Number isolation input circuit and ADC change-over circuits, communication channel include communication interface protection circuit, communication interface circuit, DC/DC every
From circuit and photoelectric coupling circuit, power supply circuit includes transformer, rectifier bridge, first resistor, second resistance, 3rd resistor, the
Four resistance, the 5th resistance, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electric capacity, inductance, the first voltage-stabiliser tube, the two or two pole
Pipe, triode and switching regulator IC, the 4th resistance and the 5th resistance are used to carrying out overcurrent protection, thus the security of circuit and
Reliability is higher.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation in the utility model two-way series-type voltage sensor one embodiment；
Fig. 2 is the circuit theory diagrams of power supply circuit in the embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
In the utility model two-way series-type voltage sensor embodiment, the structure of the two-way series-type voltage sensor
Schematic diagram is as shown in Figure 1.In Fig. 1, the two-way series-type voltage sensor includes microprocessor 11, voltage acquisition passage 12, led to
Interrogate passage 13, power supply circuit 14 and computer 15, wherein, voltage acquisition passage 12, communication channel 13 and power supply circuit 14 with
Microprocessor 11 connects, and microprocessor 11 is also connected with computer 15, for the outputting standard signal of computer 15.Wherein, it is electric
Pressure acquisition channel 12 includes control source interface 121, signal isolation input circuit 122 and ADC change-over circuits 123, wherein, voltage
Input interface 121 connects microprocessor 11 after passing sequentially through signal isolation input circuit 122 and ADC change-over circuits 123, and communication is logical
Road 13 includes communication interface protection circuit 131, communication interface circuit 132, DC/DC isolation circuits 133 and photoelectric coupling circuit
134, DC/DC isolation circuits 133 and photoelectric coupling circuit 134 are in parallel, and one end in parallel is connected with microprocessor 11, and in parallel is another
One end is connected by communication interface circuit 132 with communication interface protection circuit 131.
It is mutually isolated between microprocessor 11 and communication interface circuit 132 in the present embodiment, there is electric signal transmission single
Tropism, there are good electrical isolation capabilities and antijamming capability.The input of photoelectric coupling circuit 134 belongs to current mode work
Low-resistance element, thus there is very strong common mode inhibition capacity.So can be with as terminal isolation element in Long line transmission information
Greatly improve signal to noise ratio.
It is electric that the two-way series-type voltage sensor gathers tandem type present in electromagnet apparatus in metallurgy industry in real time
The information of voltage of equipment, after signal isolation and analog-to-digital conversion, data signal is converted analog signals into, (SPI is assisted by serial ports
View) microprocessor 11 is transferred to, after microprocessor 11 obtains information, by communication channel 13 and host computer combined network communication, realize
Remote transmission, unified management.In addition, microprocessor 11 is analyzed by the information of voltage of the power supply circuit 14 to receiving,
Judge whether power supply circuit 14 there are the failures such as over-pressed, under-voltage, excessively stream, open circuit, short circuit and phase shortage.When an error occurs, a side
Face, position, type and the time of failure can be shown in computer 15；On the other hand, sound and light alarm letter can be sent by buzzer
Number, so as to which reliability be effectively ensured.
Voltage acquisition passage 12 has electrical isolation function, improves the security of voltage acquisition；Communication channel 13 has simultaneously
There are DC/DC isolation circuits 33 and photoelectric coupling circuit 34, realize that the input between microprocessor 11 and communication interface circuit 132 is defeated
Go out isolation, improve the signal to noise ratio of signal transmission.
Fig. 2 is the circuit theory diagrams of power supply circuit in the present embodiment, and in Fig. 2, the power supply circuit 14 includes transformer W, whole
Flow bridge T, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the first electrochemical capacitor C1,
Second electrochemical capacitor C2, the 3rd electric capacity C3, inductance L, the first voltage-stabiliser tube D1, the second diode D2, triode Q1 and switch voltage-stabilizing
Chip IC 1, the both ends input 220V alternating currents of transformer W primary coil, rectifier bridge T first port and transformer W time
Level coil N2 one end connection, rectifier bridge T the 3rd port are connected with the transformer W secondary coil N2 other end, rectifier bridge T
Second port one end with the 5th resistance R5, the first voltage-stabiliser tube D1 negative pole, the 3rd electric capacity C3 one end and switch are steady respectively
The first pin connection of chip IC 1 is pressed, the 5th resistance R5 other end is connected with the first electrochemical capacitor C1 positive pole, rectifier bridge T
The 4th port be connected by the 4th resistance R4 with the first electrochemical capacitor C1 negative pole.
First voltage-stabiliser tube D1 positive pole by first resistor R1 respectively with triode Q1 base stage and second resistance R2 one
End connection, the negative pole of the second resistance R2 other end and triode Q1 emitter stage with the first electrochemical capacitor C1 are connected, three poles
Pipe Q1 colelctor electrode by 3rd resistor R3 respectively with switching regulator IC IC1 the 5th pin and the 3rd electric capacity C3 other end
Connection, switching regulator IC IC1 the 3rd pin ground connection, switching regulator IC IC1 second pin respectively with the second diode
D2 negative electrode is connected with inductance L one end, and the inductance L other end is connected with the second electrochemical capacitor C2 positive pole, the second diode
D2 anode is connected with the second electrochemical capacitor C2 negative pole, and switching regulator IC IC1 the 4th pin is another with inductance L respectively
End and microprocessor 11 connect.
Above-mentioned 4th resistance R4 and the 5th resistance R5 is current-limiting resistance, and the 4th resistance R4 is used for the 4th of rectifier bridge T
Branch road where port carries out overcurrent protection, and the 5th resistance R5 is used to carry out overcurrent protection to the branch road where the first electric capacity C1,
Therefore the safety and reliability of circuit is higher.
It is noted that in the present embodiment, triode Q1 is NPN type triode.Certainly, in some feelings of the present embodiment
Under condition, triode Q1 can also be PNP type triode, but at this moment the structure of circuit also will accordingly change.
In the present embodiment, the power supply circuit 14 also includes the 6th resistance R6, the 6th resistance R6 one end and the 3rd electric capacity C3
One end connection, the 6th resistance R6 other end is connected with switching regulator IC IC1 the first pin.6th resistance R6 is current limliting
Resistance, overcurrent protection is carried out for the branch road where the first pin to switching regulator IC IC1, to further enhance circuit
Safety and reliability.
In the present embodiment, the power supply circuit 14 also includes the 7th resistance R7, and switching regulator IC IC1 the 3rd pin passes through
7th resistance R7 is connected with triode Q1 emitter stage.7th resistance R7 is current-limiting resistance, for switching regulator IC IC1's
Branch road where 3rd pin carries out overcurrent protection, further to strengthen the safety and reliability of circuit.
In the present embodiment, the power supply circuit 14 also includes the 8th resistance R8, the 8th resistance R8 one end and switch voltage-stabilizing core
Piece IC1 second pin connection, the 8th resistance R8 other end are connected with the second diode D2 negative electrode.8th resistance R8 is limited
Leakage resistance, for carrying out overcurrent protection to the branch road where the second diode D2.
In the present embodiment, the power supply circuit 14 also includes the 9th resistance R9, and switching regulator IC IC1 the 4th pin passes through
9th resistance R9 is connected with microprocessor 11.9th resistance R9 is current-limiting resistance, for drawing to the 4th of switching regulator IC IC1
Branch road where pin carries out overcurrent protection.
In a word, in the present embodiment, the two-way series-type voltage sensor is directed in metallurgy industry and deposited in electromagnet apparatus
Tandem type electrical equipment carry out status monitoring and voltage and gather in real time, the voltage of collection is by the voltage string within two sections of 500V
Connection forms, and the two-way series-type voltage sensor uses the acquisition circuit of two-way isolation, has been carried out between input signal and passage
Full isolation, export as the standard signal with common port, be suitable for computer system and be acquired analysis, and to the operation of equipment
State carries out real-time feedback control.Further, since its power supply circuit 14 is provided with current-limiting resistance, therefore the security of circuit and reliable
Property is higher.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (6)
- A kind of 1. two-way series-type voltage sensor, it is characterised in that including microprocessor, voltage acquisition passage, communication channel, Power supply circuit and computer, voltage acquisition passage, communication channel and the power supply circuit are connected with the microprocessor, described Microprocessor is also connected with the computer, for including to the computer export standard signal, the voltage acquisition passage Control source interface, signal isolation input circuit and ADC change-over circuits, the control source interface pass sequentially through the signal every From the microprocessor is connected after input circuit and ADC change-over circuits, the communication channel includes communication interface protection circuit, led to Communication interface circuit, DC/DC isolation circuits and photoelectric coupling circuit, the DC/DC isolation circuits and photoelectric coupling circuit are in parallel, and One end of connection is connected with the microprocessor, and the other end in parallel is protected by the communication interface circuit and the communication interface Circuit connects；The power supply circuit includes transformer, rectifier bridge, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity Resistance, the first electrochemical capacitor, the second electrochemical capacitor, the 3rd electric capacity, inductance, the first voltage-stabiliser tube, the second diode, triode and switch Voltage stabilizing chip, the both ends input AC electricity of the primary coil of the transformer, the first port of the rectifier bridge and the transformation One end connection of the secondary coil of device, the 3rd port of the rectifier bridge and the other end of the secondary coil of the transformer connect Connect, the second port of the rectifier bridge one end with the 5th resistance, the negative pole of the first voltage-stabiliser tube, the one of the 3rd electric capacity respectively End connects with the first pin of switching regulator IC, and the other end of the 5th resistance connects with the positive pole of first electrochemical capacitor Connecing, the 4th port of the rectifier bridge is connected by the 4th resistance with the negative pole of first electrochemical capacitor, and described first The positive pole of voltage-stabiliser tube is connected with the base stage of the triode and one end of second resistance respectively by the first resistor, and described The negative pole of the other end of two resistance and the emitter stage of triode with first electrochemical capacitor is connected, the current collection of the triode Pole is connected with the 5th pin of the switching regulator IC and the other end of the 3rd electric capacity respectively by the 3rd resistor, described The 3rd pin ground connection of switching regulator IC, the second pin of switching regulator IC the moon with second diode respectively Pole is connected with one end of inductance, and the other end of the inductance is connected with the positive pole of second electrochemical capacitor, the two or two pole The anode of pipe is connected with the negative pole of second electrochemical capacitor, the 4th pin of the switching regulator IC respectively with the inductance The other end connected with microprocessor.
- 2. two-way series-type voltage sensor according to claim 1, it is characterised in that the power supply circuit also includes the Six resistance, one end of the 6th resistance are connected with one end of the 3rd electric capacity, the other end of the 6th resistance with it is described The first pin connection of switching regulator IC.
- 3. two-way series-type voltage sensor according to claim 2, it is characterised in that the power supply circuit also includes the Seven resistance, the 3rd pin of the switching regulator IC are connected by the 7th resistance with the emitter stage of the triode.
- 4. the two-way series-type voltage sensor according to claims 1 to 3 any one, it is characterised in that the power supply Circuit also includes the 8th resistance, and one end of the 8th resistance is connected with the second pin of the switching regulator IC, and described The other end of eight resistance is connected with the negative electrode of second diode.
- 5. two-way series-type voltage sensor according to claim 4, it is characterised in that the power supply circuit also includes the Nine resistance, the 4th pin of the switching regulator IC are connected by the 9th resistance with the microprocessor.
- 6. two-way series-type voltage sensor according to claim 5, it is characterised in that the triode is NPN type three Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720174515.2U CN206638726U (en) | 2017-02-24 | 2017-02-24 | Two-way series-type voltage sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720174515.2U CN206638726U (en) | 2017-02-24 | 2017-02-24 | Two-way series-type voltage sensor |
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| CN206638726U true CN206638726U (en) | 2017-11-14 |
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| CN201720174515.2U Active CN206638726U (en) | 2017-02-24 | 2017-02-24 | Two-way series-type voltage sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114423131A (en) * | 2022-01-28 | 2022-04-29 | 广东浩博特科技有限公司 | Electronic switch without fire-fighting live wire and with fire-fighting centralized control function and system |
-
2017
- 2017-02-24 CN CN201720174515.2U patent/CN206638726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114423131A (en) * | 2022-01-28 | 2022-04-29 | 广东浩博特科技有限公司 | Electronic switch without fire-fighting live wire and with fire-fighting centralized control function and system |
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