CN215835130U - A switch board fault protection system for intelligence tally - Google Patents
A switch board fault protection system for intelligence tally Download PDFInfo
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- CN215835130U CN215835130U CN202121657563.XU CN202121657563U CN215835130U CN 215835130 U CN215835130 U CN 215835130U CN 202121657563 U CN202121657563 U CN 202121657563U CN 215835130 U CN215835130 U CN 215835130U
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Abstract
The utility model discloses a control cabinet fault protection system for intelligent tallying, which comprises: the voltage detection module is used for carrying out electric control detection on the power supply input by the control cabinet through the controller U1; the thyristor trigger module is used for enabling the thyristor U1 to obtain trigger voltage through the reverse conduction of the diode D2 and transmitting overvoltage to the output voltage limiting protection module; the output voltage limiting protection module is used for carrying out secondary detection on the overvoltage through a diode D3, and carrying out shunting or combining through an optical coupling switch OT, so that a triode Q1 obtains conduction trigger voltage and outputs stable voltage; the power supply interference suppression module switches the path of the overvoltage through an isolating switch SG, and a coil T1 and a coil T2 perform resistance adjustment on the generated induced current and output an adjusted direct-current power supply; the utility model separates the conduction paths of normal voltage and overvoltage by detecting the input power supply of the control cabinet, adjusts the overvoltage and inhibits the interference of the transmission power supply.
Description
Technical Field
The utility model relates to a fault protection system, in particular to a fault protection system for a control cabinet for intelligent tallying.
Background
Fault protection is called earth fault protection in distribution line protection, which is alerted by tripping a circuit breaker or alarming when an electrical fault occurs between one or more phase conductors and ground; the function can be integrally designed on the circuit breaker; further, electric shock is prevented, and a fault circuit should be cut off within a predetermined time when the contact voltage exceeds 50V in a normal environment.
The prior art has the problems that because the traditional fault protection adopts disconnection and alarm prompt to complete the fault protection of the control cabinet, the fault needs to be maintained and checked manually when the fault occurs, and further the separation processing of automatically adjusting the output voltage according to the difference of the voltages received by the control cabinet and the normal voltage and the overvoltage cannot be carried out; the transmission of the power supply interferes with the signal transmission in the control cabinet, so that the control management of the control cabinet is influenced, and the problem of delay of data processing of the control cabinet is also caused.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a switch board fault protection system for intelligence tally to solve the above-mentioned problem that prior art exists.
The technical scheme is as follows: a control cabinet fault protection system for intelligent tallying, comprising:
the voltage detection module is used for carrying out electric control detection on a power supply input by the control cabinet through the controller U1, the capacitor C1 is used for providing discharge voltage, and the detected overvoltage is transmitted to the silicon controlled rectifier triggering module;
the thyristor trigger module is used for enabling the thyristor U1 to obtain trigger voltage through reverse conduction of the diode D2, and the resistor R4 and the diode D4 are used for respectively limiting transmission and reverse conduction of overvoltage and transmitting the overvoltage to the output voltage limiting protection module;
the output voltage limiting protection module is used for carrying out secondary detection on the overvoltage through a diode D3, and carrying out shunting or combining through an optical coupling switch OT, so that a triode Q1 obtains conduction trigger voltage and outputs stable voltage;
and the power supply interference suppression module switches the path of the overvoltage through the isolating switch SG, resists and adjusts the generated induced current through the coil T1 and the coil T2, and outputs the adjusted direct-current power supply.
In a further embodiment, the voltage detection module includes a controller U1, a resistor R1, a lamp LDE, a capacitor C1, a resistor R3, a diode D1, and a resistor R2;
the controller U4 is connected with the positive terminal of the LED of the lamp; DC is a control cabinet input voltage port and is connected with a pin 3 of a controller U1 and one end of a resistor R2; the cathode end of the LED lamp is connected with one end of a resistor R1; the other end of the resistor R1 is respectively connected with a ground wire GND and a pin 5 of a controller U1; the pin 2 of the controller U1 is connected with the other end of the resistor R2; the pin 7 of the controller U1 is connected with the positive end of a diode D1; pin 1 of the controller U1 is connected with one end of a resistor R3; the pin 6 of the controller U1 is connected with one end of a capacitor C1; the other end of the capacitor C1 is respectively connected with the ground GND and the other end of the resistor R3.
In a further embodiment, the thyristor trigger module comprises a diode D2, a resistor R4, a thyristor U1, a diode D4 and a capacitor C2;
the negative end of the diode D2 is respectively connected with the positive end of a pin of a silicon controlled rectifier U1 and one end of a resistor R3; the positive end of the diode D2 is respectively connected with one end of a resistor R4, one end of a capacitor C2 and a pin 1 of a silicon controlled rectifier U1; the other end of the resistor R4 is connected with the positive end of a diode D4; the negative end of the diode D4 is connected with the negative end of the diode D1; the other end of the capacitor C2 is connected with the ground line GND.
In a further embodiment, the output voltage limiting protection module comprises a diode D3, a resistor R5, a photo-coupler switch OT, a resistor R6, a resistor R7, a capacitor C3 and a transistor Q1;
the negative end of the diode D3 is connected with the negative end of the controllable silicon U1; the positive end of the diode D3 is respectively connected with one end of a resistor R5, an optical coupler switch OT pin 3, a pin 2 and a triode Q1 collector terminal; the other end of the resistor R5 is respectively connected with a ground wire GND and an optical coupler switch OT pin 4; the optical coupler switch OT pin 1 is connected with one end of a resistor R6 and one end of a resistor R7 respectively; the other end of the resistor R6 is connected with a ground wire GND; the other end of the resistor R7 is respectively connected with one end of a capacitor C3 and the base terminal of a triode Q1; the other end of the capacitor C3 is connected with the ground line GND.
In a further embodiment, the power supply interference suppression module comprises a disconnecting switch SG, a coil T1, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a coil T2 and a capacitor C5;
one end of the isolating switch SG is connected with the emitter terminal of a triode Q1; the other end of the isolating switch SG is respectively connected with one end of a resistor R8 and one end of a resistor R9; the other end of the resistor R8 is respectively connected with a pin 1 of a coil T2, one end of a resistor R10 and a pin 3 of a coil T1; the other end of the resistor R9 is respectively connected with one end of a capacitor C4, a coil T1 pin 4 and a coil T2 pin 2; the other end of the capacitor C4 is connected with the other end of the resistor R10; pin 2 of the coil T1 is connected with a ground wire GND; pin 1 of the coil T1 is connected with the negative terminal of a diode D4; the pin 3 of the coil T2 is respectively connected with one end of a capacitor C5 and the positive end of an output voltage port DC; and the pin 4 of the coil T2 is respectively connected with the other end of the capacitor C5 and the negative DC terminal of the output voltage port.
In a further embodiment, the controller U1 is model 555; the model of the triode Q1 is NPN.
Has the advantages that: in order to prevent the control cabinet from being disconnected and alarm prompting to finish fault protection of the control cabinet, manual maintenance and checking are required when a fault occurs, and further, the output voltage can not be automatically adjusted according to different voltages received by the control cabinet and the separation processing of normal voltage and overvoltage can not be carried out; the voltage detection module is designed, the controller U1 is used for carrying out electric control detection on a power supply input by the control cabinet, the input voltage of the control cabinet is judged, the discharge voltage is provided for the controller U1 through the capacitor C1, the detected overvoltage is separated from the normal voltage through the controller U1, the generated overvoltage is conducted through reverse breakdown of a diode D2 in the silicon controlled trigger module, the silicon controlled rectifier U1 obtains trigger voltage, and an overvoltage transmission path is conducted to the silicon controlled trigger module; the overvoltage is secondarily detected through the diode D3, and the optical coupling switch OT carries out shunting or combining management, so that the triode Q1 obtains conduction trigger voltage and outputs stable voltage through repeated voltage regulation; in addition, the interference of the transmission of the power supply on the signal transmission in the control cabinet not only affects the control management of the control cabinet, but also causes the delay problem of the data processing of the control cabinet; the path of the overvoltage is switched through the isolating switch SG, the coil T1 and the coil T2 resist and adjust the generated induced current, and the adjusted direct-current power supply is output, so that the influence of the power supply on data transmission is prevented.
Drawings
Fig. 1 is a block circuit diagram of the present invention.
Detailed Description
Referring to fig. 1, a control cabinet fault protection system for intelligent tallying includes:
the voltage detection module comprises a controller U1, a resistor R1, a lamp LDE, a capacitor C1, a resistor R3, a diode D1 and a resistor R2.
The controller U4 in the voltage detection module is connected with the positive terminal of the LED lamp; DC is a control cabinet input voltage port and is connected with a pin 3 of a controller U1 and one end of a resistor R2; the cathode end of the LED lamp is connected with one end of a resistor R1; the other end of the resistor R1 is respectively connected with a ground wire GND and a pin 5 of a controller U1; the pin 2 of the controller U1 is connected with the other end of the resistor R2; the pin 7 of the controller U1 is connected with the positive end of a diode D1; pin 1 of the controller U1 is connected with one end of a resistor R3; the pin 6 of the controller U1 is connected with one end of a capacitor C1; the other end of the capacitor C1 is respectively connected with the ground wire GND and the other end of the resistor R3; the controller U1 is used for electrically controlling and detecting the power input by the control cabinet, and the capacitor C1 is used for providing discharge voltage.
The thyristor trigger module comprises a diode D2, a resistor R4, a thyristor U1, a diode D4 and a capacitor C2.
The negative end of a diode D2 in the silicon controlled trigger module is respectively connected with the positive end of a pin of a silicon controlled U1 and one end of a resistor R3; the positive end of the diode D2 is respectively connected with one end of a resistor R4, one end of a capacitor C2 and a pin 1 of a silicon controlled rectifier U1; the other end of the resistor R4 is connected with the positive end of a diode D4; the negative end of the diode D4 is connected with the negative end of the diode D1; the other end of the capacitor C2 is connected with a ground wire GND; the reverse conduction of the diode D2 makes the thyristor U1 obtain trigger voltage, and the resistor R4 and the diode D4 limit the transmission of overvoltage and the reverse conduction respectively.
The output voltage limiting protection module comprises a diode D3, a resistor R5, an optocoupler switch OT, a resistor R6, a resistor R7, a capacitor C3 and a triode Q1.
The negative end of a diode D3 in the output voltage limiting protection module is connected with the negative end of a controllable silicon U1; the positive end of the diode D3 is respectively connected with one end of a resistor R5, an optical coupler switch OT pin 3, a pin 2 and a triode Q1 collector terminal; the other end of the resistor R5 is respectively connected with a ground wire GND and an optical coupler switch OT pin 4; the optical coupler switch OT pin 1 is connected with one end of a resistor R6 and one end of a resistor R7 respectively; the other end of the resistor R6 is connected with a ground wire GND; the other end of the resistor R7 is respectively connected with one end of a capacitor C3 and the base terminal of a triode Q1; the other end of the capacitor C3 is connected with a ground wire GND; the diode D3 detects the overvoltage for the second time, and performs shunting or combining through the optocoupler switch OT, so that the triode Q1 obtains the conduction trigger voltage and outputs a stable voltage.
The power interference suppression module comprises an isolating switch SG, a coil T1, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a coil T2 and a capacitor C5.
One end of an isolating switch SG in the power interference suppression module is connected with an emitter terminal of a triode Q1; the other end of the isolating switch SG is respectively connected with one end of a resistor R8 and one end of a resistor R9; the other end of the resistor R8 is respectively connected with a pin 1 of a coil T2, one end of a resistor R10 and a pin 3 of a coil T1; the other end of the resistor R9 is respectively connected with one end of a capacitor C4, a coil T1 pin 4 and a coil T2 pin 2; the other end of the capacitor C4 is connected with the other end of the resistor R10; pin 2 of the coil T1 is connected with a ground wire GND; pin 1 of the coil T1 is connected with the negative terminal of a diode D4; the pin 3 of the coil T2 is respectively connected with one end of a capacitor C5 and the positive end of an output voltage port DC; the pin 4 of the coil T2 is respectively connected with the other end of the capacitor C5 and the DC negative end of the output voltage port; the isolating switch SG switches the path of the overvoltage, and the coil T1 and the coil T2 perform resistance adjustment on the generated induced current and output the adjusted dc power.
The working principle is as follows: the controller U1 obtains an input power supply through the DC end, so that the lamp LED operates, the received power supply is subjected to electric control detection, and the capacitor C1 provides a discharge voltage;
when overvoltage occurs, pin 1 of controller U1 conducts overvoltage to make diode D2 break down and conduct reversely, resistor R4 limits transmission of overvoltage, diode D4 conducts reversely and makes silicon controlled U1 obtain trigger voltage, silicon controlled U1 conducts to make fault protection in running state, silicon controlled U1 trigger voltage conducts overvoltage, diode D3 conducts secondary reverse breakdown detection, optocoupler OT detects overvoltage and conducts to make triode Q1 obtain conduction trigger voltage, resistor R7 adjusts voltage and distribution of conduction path repeatedly adjusts voltage, isolating switch SG switches over overvoltage path, resistor R8 and resistor R9 correspond to different switching paths respectively and adjusts conducted voltage value, coil T2 resists and adjusts generated induced current, capacitor C5 filters and inhibits interference of output voltage, and outputting the regulated stable direct current power supply;
when the output voltage is normal voltage, the diode D2 is in a cut-off state, the diode D4 limits the normal voltage to transmit voltage to the scr trigger module, and the coil T1 and the coil T2 perform resistance adjustment on the generated induced current and output direct current power.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.
Claims (5)
1. A switch board fault protection system for intelligent tallying, comprising:
the voltage detection module is used for carrying out electric control detection on a power supply input by the control cabinet through the controller U1, the capacitor C1 is used for providing discharge voltage, and the detected overvoltage is transmitted to the silicon controlled rectifier triggering module;
the thyristor trigger module is used for enabling the thyristor U1 to obtain trigger voltage through reverse conduction of the diode D2, and the resistor R4 and the diode D4 are used for respectively limiting transmission and reverse conduction of overvoltage and transmitting the overvoltage to the output voltage limiting protection module;
the output voltage limiting protection module is used for carrying out secondary detection on the overvoltage through a diode D3, and carrying out shunting or combining through an optical coupling switch OT, so that a triode Q1 obtains conduction trigger voltage and outputs stable voltage;
and the power supply interference suppression module switches the path of the overvoltage through the isolating switch SG, resists and adjusts the generated induced current through the coil T1 and the coil T2, and outputs the adjusted direct-current power supply.
2. The control cabinet fault protection system for intelligent tallying of claim 1, wherein the voltage detection module comprises controller U1, resistor R1, lamp LDE, capacitor C1, resistor R3, diode D1 and resistor R2;
the controller U4 is connected with the positive terminal of the LED of the lamp; DC is a control cabinet input voltage port and is connected with a pin 3 of a controller U1 and one end of a resistor R2; the cathode end of the LED lamp is connected with one end of a resistor R1; the other end of the resistor R1 is respectively connected with a ground wire GND and a pin 5 of a controller U1; the pin 2 of the controller U1 is connected with the other end of the resistor R2; the pin 7 of the controller U1 is connected with the positive end of a diode D1; pin 1 of the controller U1 is connected with one end of a resistor R3; the pin 6 of the controller U1 is connected with one end of a capacitor C1; the other end of the capacitor C1 is respectively connected with the ground GND and the other end of the resistor R3.
3. The control cabinet fault protection system for intelligent tallying according to claim 1, wherein: the thyristor trigger module comprises a diode D2, a resistor R4, a thyristor U1, a diode D4 and a capacitor C2;
the negative end of the diode D2 is respectively connected with the positive end of a pin of a silicon controlled rectifier U1 and one end of a resistor R3; the positive end of the diode D2 is respectively connected with one end of a resistor R4, one end of a capacitor C2 and a pin 1 of a silicon controlled rectifier U1; the other end of the resistor R4 is connected with the positive end of a diode D4; the negative end of the diode D4 is connected with the negative end of the diode D1; the other end of the capacitor C2 is connected with the ground line GND.
4. The control cabinet fault protection system for intelligent tallying according to claim 1, wherein: the output voltage limiting protection module comprises a diode D3, a resistor R5, an optocoupler switch OT, a resistor R6, a resistor R7, a capacitor C3 and a triode Q1;
the negative end of the diode D3 is connected with the negative end of the controllable silicon U1; the positive end of the diode D3 is respectively connected with one end of a resistor R5, an optical coupler switch OT pin 3, a pin 2 and a triode Q1 collector terminal; the other end of the resistor R5 is respectively connected with a ground wire GND and an optical coupler switch OT pin 4; the optical coupler switch OT pin 1 is connected with one end of a resistor R6 and one end of a resistor R7 respectively; the other end of the resistor R6 is connected with a ground wire GND; the other end of the resistor R7 is respectively connected with one end of a capacitor C3 and the base terminal of a triode Q1; the other end of the capacitor C3 is connected with the ground line GND.
5. The control cabinet fault protection system for intelligent tallying according to claim 1, wherein: the power supply interference suppression module comprises an isolating switch SG, a coil T1, a resistor R8, a resistor R9, a resistor R10, a capacitor C4, a coil T2 and a capacitor C5;
one end of the isolating switch SG is connected with the emitter terminal of a triode Q1; the other end of the isolating switch SG is respectively connected with one end of a resistor R8 and one end of a resistor R9; the other end of the resistor R8 is respectively connected with a pin 1 of a coil T2, one end of a resistor R10 and a pin 3 of a coil T1; the other end of the resistor R9 is respectively connected with one end of a capacitor C4, a coil T1 pin 4 and a coil T2 pin 2; the other end of the capacitor C4 is connected with the other end of the resistor R10; pin 2 of the coil T1 is connected with a ground wire GND; pin 1 of the coil T1 is connected with the negative terminal of a diode D4; the pin 3 of the coil T2 is respectively connected with one end of a capacitor C5 and the positive end of an output voltage port DC; and the pin 4 of the coil T2 is respectively connected with the other end of the capacitor C5 and the negative DC terminal of the output voltage port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657563.XU CN215835130U (en) | 2021-07-21 | 2021-07-21 | A switch board fault protection system for intelligence tally |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657563.XU CN215835130U (en) | 2021-07-21 | 2021-07-21 | A switch board fault protection system for intelligence tally |
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| CN215835130U true CN215835130U (en) | 2022-02-15 |
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| CN202121657563.XU Active CN215835130U (en) | 2021-07-21 | 2021-07-21 | A switch board fault protection system for intelligence tally |
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- 2021-07-21 CN CN202121657563.XU patent/CN215835130U/en active Active
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