CN217689337U - Remote signaling board variable voltage detection circuit compatible with internal and external power supplies - Google Patents
Remote signaling board variable voltage detection circuit compatible with internal and external power supplies Download PDFInfo
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- CN217689337U CN217689337U CN202221392899.2U CN202221392899U CN217689337U CN 217689337 U CN217689337 U CN 217689337U CN 202221392899 U CN202221392899 U CN 202221392899U CN 217689337 U CN217689337 U CN 217689337U
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Abstract
The application relates to a remote signaling board variable voltage detection circuit compatible with an internal power supply and an external power supply, which relates to the technical field of variable power supply detection and comprises a variable voltage input end, wherein the variable voltage input end comprises a voltage input anode and a voltage input cathode and is used for receiving an externally input variable voltage signal; the voltage-reducing submodule is used for reducing the second voltage signal; the coupling module comprises a coupler, a coupling signal input end is used for receiving a coupling voltage input signal, and the coupler is used for outputting a coupling voltage output signal; and the control voltage signal output module is used for receiving the coupling voltage output signal and outputting a control voltage signal. This application has the effect of being convenient for monitor variable voltage input stability.
Description
Technical Field
The application relates to the field of variable power supply detection, in particular to a remote signaling board variable voltage detection circuit compatible with an internal power supply and an external power supply.
Background
The remote signaling is the input amount of telemechanical communication data, such as the on/off state of a circuit breaker or a disconnector, the action/reset of a protection signal, the input/output of an AGC/AVC function, etc., and is usually represented by 1 or 2 binary bits.
In practical use, the power supply for remotely signaling the switching value input can be supplied with 24V or 110V direct current in the DTU.
In the related art, in order to ensure the stability of the signal, it is necessary to monitor whether the power supply is stably connected to the circuit to continuously supply power during the use process, so as to ensure that the remote communication board can output a control voltage signal.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a remote signaling board variable voltage detection circuit which is compatible with an internal power supply and an external power supply and is convenient for monitoring the stability of variable voltage input.
In a first aspect, the remote signaling board variable voltage detection circuit compatible with the internal and external power supplies provided by the application adopts the following technical scheme:
the compatible remote signalling board variable voltage detection circuit of interior external power includes:
the variable voltage input end comprises a voltage input anode and a voltage input cathode and is used for receiving an externally input variable voltage signal;
the variable voltage detection module comprises a voltage division submodule, a judgment submodule and a voltage reduction submodule which are electrically connected, wherein the voltage division submodule is used for dividing the variable voltage signal into a first voltage signal, the judgment submodule is used for judging whether the first voltage signal is within a set range value and outputting a judgment result, the judgment result is a second voltage signal, and the voltage reduction submodule is used for reducing the second voltage signal into a coupling voltage input signal;
a coupling module including a coupler, the coupler including a coupling signal input terminal and a coupling signal output terminal, the coupling signal input terminal being configured to receive the coupling voltage input signal, the coupler being configured to output a coupling voltage output signal according to the coupling voltage input signal;
and the control voltage signal output module is used for receiving the coupling voltage output signal and outputting a control voltage signal according to the coupling voltage output signal.
Through adopting above-mentioned technical scheme, when the different voltage of variable voltage input end input, the partial pressure submodule adjusts the voltage of variable voltage signal to the voltage that is suitable for the judgement submodule piece, thereby carry out state judgement, further step down to the voltage that coupling module is suitable for with step-down submodule at last, through the indirect information transfer that has voltage input of coupling module with variable voltage input end to control voltage signal output module, thereby output has output control voltage signal to the control circuit board of teleletter board on, in order to express that variable voltage's input is existent.
Optionally, the voltage divider submodule includes a first voltage divider resistor R1 and a second voltage divider resistor R11 connected in series, an end of the first voltage divider resistor R1 away from the second voltage divider resistor R11 is electrically connected to the voltage input positive electrode, an end of the second voltage divider resistor R11 away from the first voltage divider resistor R1 is electrically connected to the voltage input negative electrode, and a connection point between the first voltage divider resistor R1 and the second voltage divider resistor R11 is configured to output a first voltage signal.
By adopting the technical scheme, the purpose of voltage reduction is achieved by utilizing resistance voltage division.
Optionally, the voltage dividing submodule includes a first voltage dividing resistor R1 and a voltage regulator D1 connected in series, one end of the first voltage dividing resistor R1 is electrically connected to the voltage input anode, and the other end is electrically connected to the cathode of the voltage regulator D1, the anode of the voltage regulator D1 is electrically connected to the voltage input cathode, and the cathode of the voltage regulator D1 is used for outputting a first voltage signal.
By adopting the technical scheme, the purpose of reducing the voltage is realized by utilizing the voltage stabilizing tube.
Optionally, the judgment sub-module includes a switch tube Q1, a base of the switch tube Q1 is electrically connected to the output end of the first voltage signal, a collector of the switch tube Q1 is electrically connected to the positive voltage input electrode, an emitter of the switch tube Q1 is electrically connected to the negative voltage input electrode through a resistor RV, and the emitter of the switch tube Q1 is the output end of the second voltage signal.
By adopting the technical scheme, the switching function of the switching tube Q1 is utilized as a component for judging the existence of voltage.
Optionally, the voltage dropping sub-module includes a resistor R2, a resistor R3, and a resistor R4 connected in series in sequence, an end of the resistor R2 away from the resistor R3 is electrically connected to the emitter of the switching tube Q1, and an end of the resistor R4 away from the resistor R3 is electrically connected to the negative electrode of the voltage input.
By adopting the technical scheme, the voltage division operation is realized by utilizing the plurality of resistors.
Optionally, the voltage-reducing sub-module further includes a diode D2, a cathode of the diode D2 is electrically connected to a connection point between the resistor R2 and the resistor R3, and an anode of the diode D2 is electrically connected to a connection point between the resistor R3 and the resistor R4.
By adopting the technical scheme, the diode D2 plays a role in protection, prevents current reversal and protects the coupling module.
Optionally, the coupler is set as a photoelectric coupler U1, the photoelectric coupler U1 includes a light emitting diode anode a, a light emitting diode cathode b, a phototriode collector c, and a phototriode emitter d, which are sequentially disposed, and the light emitting diode anode a and the light emitting diode cathode b are connected in parallel at two ends of the resistor R3.
By adopting the technical scheme, the variable voltage detection is realized by adopting the photoelectric coupler U1, so that the judgment signal with unchanged output is indirect.
Optionally, the control voltage signal output module includes a first power source, a resistor R5 and a capacitor C2, one end of the resistor R5 is electrically connected to an output end of the first power source, the other end of the resistor R5 is grounded through the capacitor C2, a connection point between the resistor R5 and the capacitor C2 is an output end of the control voltage signal, a collector C of the phototransistor of the photocoupler U1 is electrically connected to a connection point between the resistor R5 and the capacitor C2, and an emitter d of the phototransistor of the photocoupler U1 is grounded.
By adopting the technical scheme, when variable voltage exists, the photoelectric coupler U1 is conducted, the output end of the control voltage signal is grounded at the moment, and the output is low level; otherwise, a high level is output.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the detection of the variable voltage is realized through simple circuit logic, and when the variable voltage exists, stable voltage is output, so that the existence of a variable voltage signal is judged, and the signal monitoring of the variable voltage is realized;
2. the indirect transmission of signals is realized through the optical coupler, and the realization is simple and easy.
Drawings
FIG. 1 is a block diagram of modules of an embodiment of the present application;
fig. 2 is a circuit diagram of an embodiment of the present application, in which the voltage dividing submodule is a first voltage dividing resistor R1 and a voltage regulator D1;
fig. 3 is a circuit diagram of an embodiment of the present application, in which the voltage dividing submodule is a first voltage dividing resistor R1 and a second voltage dividing resistor R11.
Reference numerals: 1. a variable voltage input; 2. a variable voltage detection module; 21. a voltage division submodule; 22. a judgment submodule; 23. a blood pressure reducing submodule; 3. a coupling module; 4. and a control voltage signal output module.
Detailed Description
The present application is described in further detail below with reference to fig. 1-3.
The embodiment is as follows:
referring to fig. 1, the remote signaling board variable voltage detection circuit compatible with an internal power supply and an external power supply comprises a variable voltage input end 1, a variable voltage detection module 2, a coupling module 3 and a control voltage signal output module 4;
referring to fig. 2, the variable voltage input terminal 1 includes a voltage input anode Vin + and a voltage input cathode Vin-for receiving an externally input variable voltage signal; in the embodiment of the application, the voltage input of the internal direct current 24V or the external direct current 110V is adopted.
The variable voltage detection module 2 comprises a voltage division submodule 21, a judgment submodule 22 and a voltage reduction submodule 23 which are electrically connected in sequence;
the voltage division submodule 21 is configured to divide a variable voltage signal into a first voltage signal, the voltage division submodule 21 includes a first voltage division resistor R1 and a voltage regulator D1, the first voltage division resistor R1 is electrically connected to a voltage input positive electrode Vin +, the other end of the first voltage division resistor R1 is electrically connected to a cathode of the voltage regulator D1, an anode of the voltage regulator D1 is electrically connected to a voltage input negative electrode Vin-, and the cathode of the voltage regulator D1 is configured to output the first voltage signal. In this embodiment, the voltage regulator D1 is preferably used to provide a stable first voltage signal, so as to achieve the voltage reduction effect.
The determining submodule 22 is configured to determine whether the first voltage signal is within a set range, and output a determination result, where the determination result is the second voltage signal. The judgment submodule 22 includes a switching tube Q1, and the switching tube Q1 is an NPN-type triode. The base electrode of the switching tube Q1 is electrically connected to the output end of the first voltage signal, the collector electrode of the switching tube Q1 is electrically connected to the positive electrode of the voltage input, the emitter electrode of the switching tube Q1 is electrically connected to the negative electrode Vin-of the voltage input through the resistor RV, and the emitter electrode of the switching tube Q1 is the output end of the second voltage signal. When one of two voltages is input to the variable voltage input end 1, the base is at a high level, the switch tube Q1 is opened, and a circuit at the rear stage of the switch tube Q1 is electrified.
The step-down submodule 23 is configured to step down the second voltage signal into a coupled voltage input signal. The voltage-reducing sub-module 23 utilizes a plurality of resistors to implement voltage-dividing operation, and includes a resistor R2, a resistor R3, and a resistor R4 connected in series in sequence, wherein one end of the resistor R2 away from the resistor R3 is electrically connected to the emitter of the switching tube Q1, and one end of the resistor R4 away from the resistor R3 is electrically connected to the voltage input cathode Vin-.
Meanwhile, for signal stability, the voltage-dropping sub-module 23 further includes a diode D2 and a capacitor C1; the cathode of the diode D2 is electrically connected to a connection point between the resistor R2 and the resistor R3, and the anode of the diode D2 is electrically connected to a connection point between the resistor R3 and the resistor R4. The diode D2 plays a role in protection, prevents current from reversing and protects the circuit. The capacitor C1 is connected in parallel to two ends of the resistor R3, and plays a role of filtering, so that a signal input into a subsequent coupler is more stable.
The coupling module 3 comprises a coupler, the coupler comprises a coupling signal input end and a coupling signal output end, the coupling signal input end is used for receiving a coupling voltage input signal, and the coupler is used for outputting a coupling voltage output signal according to the coupling voltage input signal. The coupler can adopt a photoelectric coupler U1, the photoelectric coupler U1 comprises a light emitting diode anode a, a light emitting diode cathode b, a phototriode collector c and a phototriode emitter d which are sequentially arranged, and the light emitting diode anode a and the light emitting diode cathode b are connected in parallel at two ends of a resistor R3. When the switch tube Q1 is conducted, the coupler is electrified, and the collector c of the phototriode is conducted with the emitter d of the phototriode. Thereby realizing indirect transfer of signals.
And the control voltage signal output module 4 is used for receiving the coupling voltage output signal and outputting a control voltage signal according to the coupling voltage output signal. The control voltage signal output module 4 includes a first power supply, a resistor R5, and a capacitor C2; in the embodiment of the application, the first power supply is 3.3V; one end of the resistor R5 is electrically connected to the output terminal of the first power supply, the other end of the resistor R5 is grounded through the capacitor C2, and a connection point between the resistor R5 and the capacitor C2 is an output terminal OUT of the control voltage signal. The collector C of the phototriode of the photocoupler U1 is electrically connected to the connection point between the resistor R5 and the capacitor C2, and the emitter d of the phototriode of the photocoupler U1 is grounded. When variable voltage exists, the collector c of the phototriode is conducted with the emitter d of the phototriode, and the output end OUT of the control voltage signal is grounded and outputs low level; otherwise, a high level is output.
In order to realize the voltage dividing function of the voltage divider submodule 21, the following circuit may be used. Referring to fig. 3, the voltage divider submodule 21 includes a first voltage divider resistor R1 and a second voltage divider resistor R11 connected in series, where an end of the first voltage divider resistor R1 away from the second voltage divider resistor R11 is electrically connected to the voltage input positive electrode, an end of the second voltage divider resistor R11 away from the first voltage divider resistor R1 is electrically connected to the voltage input negative electrode, and a connection point between the first voltage divider resistor R1 and the second voltage divider resistor R11 is used for outputting a first voltage signal. The purpose is to provide a high level so that the switching tube is open. In order to ensure that the magnitude of the voltage of the input photoelectric coupler U1 is within a set range, the second voltage-dividing resistor R11 may also be a resistance-variable resistor, a photoresistor or a sliding rheostat.
The implementation principle of the embodiment of the application is as follows: when the variable voltage input end 1 inputs an internal direct current of 24V or an external direct current of 110V, the voltage stabilizer D1 in the voltage division submodule 21 stabilizes the voltage to be a first voltage signal, which is a high level, the switching tube Q1 in the judgment submodule 22 is turned on, and then the multi-stage resistor in the voltage reduction submodule 23 is used for reducing the voltage to output a voltage suitable for the optoelectronic coupler U1. After the coupling module 3 is powered on, the collector c of the phototriode and the emitter d of the phototriode are conducted, and the voltage signal is controlled to be at a low level. Otherwise, it is high. The circuit is used for indirectly transmitting the information with voltage input at the variable voltage input end 1 to the control voltage signal output module 4, thereby outputting the output control voltage signal to the control circuit board of the remote communication board to indicate that the input of the variable voltage exists, and the monitoring is convenient.
The embodiments of the present disclosure are all preferred embodiments of the present disclosure, and the protection scope of the present disclosure is not limited thereby, wherein like parts are designated by like reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The compatible remote signalling board variable voltage detection circuit of interior external power supply, its characterized in that includes:
the variable voltage input end (1), the variable voltage input end (1) comprises a voltage input anode and a voltage input cathode, and is used for receiving an externally input variable voltage signal;
the variable voltage detection module (2) comprises a voltage division submodule (21), a judgment submodule (22) and a voltage reduction submodule (23), wherein the voltage division submodule (21) is electrically connected and is used for dividing the variable voltage signal into a first voltage signal, the judgment submodule (22) is used for judging whether the first voltage signal is within a set range value and outputting a judgment result, the judgment result is a second voltage signal, and the voltage reduction submodule (23) is used for reducing the second voltage signal into a coupling voltage input signal;
a coupling module (3) comprising a coupler, the coupler comprising a coupling signal input and a coupling signal output, the coupling signal input for receiving the coupling voltage input signal, the coupler for outputting a coupling voltage output signal in dependence on the coupling voltage input signal;
and the control voltage signal output module (4) is used for receiving the coupling voltage output signal and outputting a control voltage signal according to the coupling voltage output signal.
2. The remote signaling board variable voltage detection circuit compatible with the internal and external power supplies according to claim 1, wherein the voltage dividing submodule (21) comprises a first voltage dividing resistor R1 and a voltage regulator D1 connected in series, one end of the first voltage dividing resistor R1 is electrically connected to the positive voltage input pole, the other end of the first voltage dividing resistor R1 is electrically connected to the cathode of the voltage regulator D1, the anode of the voltage regulator D1 is electrically connected to the negative voltage input pole, and the cathode of the voltage regulator D1 is used for outputting a first voltage signal.
3. The internal and external power supply compatible remote signaling board variable voltage detection circuit according to claim 1, wherein the voltage dividing submodule (21) includes a first voltage dividing resistor R1 and a second voltage dividing resistor R11 connected in series, one end of the first voltage dividing resistor R1 far away from the second voltage dividing resistor R11 is electrically connected to the voltage input positive pole, one end of the second voltage dividing resistor R11 far away from the first voltage dividing resistor R1 is electrically connected to the voltage input negative pole, and a connection point between the first voltage dividing resistor R1 and the second voltage dividing resistor R11 is used for outputting a first voltage signal.
4. The internal and external power supply compatible remote signaling board variable voltage detection circuit according to claim 2 or 3, wherein the judgment sub-module (22) comprises a switch tube Q1, the base of the switch tube Q1 is electrically connected to the output end of the first voltage signal, the collector of the switch tube Q1 is electrically connected to the positive voltage input electrode, the emitter of the switch tube Q1 is electrically connected to the negative voltage input electrode through a resistor RV, and the emitter of the switch tube Q1 is the output end of the second voltage signal.
5. The remote signaling board variable voltage detection circuit compatible with the internal and external power supplies according to claim 4, wherein the voltage reduction submodule (23) comprises a resistor R2, a resistor R3 and a resistor R4 which are sequentially connected in series, one end of the resistor R2 far away from the resistor R3 is electrically connected to the emitter of the switch tube Q1, and one end of the resistor R4 far away from the resistor R3 is electrically connected to the negative pole of the voltage input.
6. The internal and external power supply compatible remote signaling board variable voltage detection circuit of claim 5, wherein said voltage step-down sub-module (23) further comprises a diode D2, the cathode of said diode D2 is electrically connected to the junction between said resistor R2 and resistor R3, and the anode of said diode D2 is electrically connected to the junction between said resistor R3 and resistor R4.
7. The remote signaling board variable voltage detection circuit compatible with internal and external power supplies according to claim 6, wherein the coupler is configured as a photocoupler U1, the photocoupler U1 comprises a light emitting diode anode a, a light emitting diode cathode b, a phototriode collector c and a phototriode emitter d which are sequentially arranged, and the light emitting diode anode a and the light emitting diode cathode b are connected in parallel at two ends of the resistor R3.
8. The internal and external power supply compatible remote signaling board variable voltage detection circuit according to claim 7, wherein the control voltage signal output module (4) comprises a first power supply, a resistor R5 and a capacitor C2, one end of the resistor R5 is electrically connected to the output end of the first power supply, the other end of the resistor R5 is grounded through the capacitor C2, the connection point between the resistor R5 and the capacitor C2 is the output end of the control voltage signal, the phototriode collector C of the photocoupler U1 is electrically connected to the connection point between the resistor R5 and the capacitor C2, and the phototriode emitter d of the photocoupler U1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221392899.2U CN217689337U (en) | 2022-06-06 | 2022-06-06 | Remote signaling board variable voltage detection circuit compatible with internal and external power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221392899.2U CN217689337U (en) | 2022-06-06 | 2022-06-06 | Remote signaling board variable voltage detection circuit compatible with internal and external power supplies |
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| Publication Number | Publication Date |
|---|---|
| CN217689337U true CN217689337U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221392899.2U Active CN217689337U (en) | 2022-06-06 | 2022-06-06 | Remote signaling board variable voltage detection circuit compatible with internal and external power supplies |
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| CN (1) | CN217689337U (en) |
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2022
- 2022-06-06 CN CN202221392899.2U patent/CN217689337U/en active Active
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