CN218473134U

CN218473134U - Voltage-controlled trigger self-locking circuit

Info

Publication number: CN218473134U
Application number: CN202120997232.4U
Authority: CN
Inventors: 郭伟萍; 柏华东; 徐君芳; 刘国军
Original assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Current assignee: Hangzhou Zhijiang Switchgear Stock Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2023-02-10
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a circuit of voltage-controlled auto-lock that triggers, including VCC, voltage detection circuit, switch on control circuit, self-locking circuit and pulse drive circuit, VCC and voltage detection circuit's input electric connection, voltage detection circuit's signal output part and switch on control circuit's signal input part electric connection, switch on control circuit's signal output part and self-locking circuit's signal input part electric connection, self-locking circuit's signal output part and pulse drive circuit's signal input part electric connection. The utility model overcomes there is the problem that the mistake combined floodgate phenomenon easily appears in traditional excitation coil. The utility model has the advantages of simple structure, low cost, wide application and the like.

Description

Voltage-controlled trigger self-locking circuit

Technical Field

The utility model relates to a self-locking circuit field, more specifically say, relate to a circuit of voltage-controlled auto-lock that triggers.

Background

For some magnet exciting coils which can only supply power for a short time, such as shunt release and the like, long-time power supply is not allowed, after triggering, the magnet exciting coils can be burnt if the magnet exciting coils are powered on for a long time, and meanwhile, the power consumption of the power supply is increased. However, if a short-time energization method is used, the exciting coils are easily opened and then closed again by mistake, and thus the method is not adopted in many cases. And most of self-locking trigger circuits can be always in a normally-on state after being triggered and driven, and are not suitable for being applied to the excitation coil.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome traditional excitation coil and have the problem that the mistake combined floodgate phenomenon easily appears, provide a voltage-controlled circuit that triggers auto-lock that has advantages such as simple structure and supply voltage basic stability now.

The utility model discloses a circuit of voltage-controlled auto-lock that triggers, including VCC, voltage detection circuit, switch on control circuit, auto-lock circuit and pulse drive circuit, VCC and voltage detection circuit's input electric connection, voltage detection circuit's signal output part and switch on control circuit's signal input part electric connection, switch on control circuit's signal output part and auto-lock circuit's signal input part electric connection, auto-lock circuit's signal output part and pulse drive circuit's signal input part electric connection.

When in use, the voltage detection circuit outputs corresponding high and low level signals according to the input working voltage VCC; the switch conduction control circuit is used for triggering the switch to be conducted or keeping the original state according to the level of the level signal output by the voltage detection circuit; the self-locking circuit is used for self-locking and outputting stable voltage; the pulse driving circuit is used for outputting a pulse signal to control the output of a driving signal when the working voltage VCC is input.

Preferably, the voltage detection circuit, the switch conduction control circuit and the self-locking circuit form an integral circuit, the circuit structure of the circuit comprises a detection chip U2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C3, a triode Q2, a triode Q4 and a MOS tube Q3, one end of the resistor R5 is respectively and electrically connected with one end of the resistor R7, one end of the resistor R9, one end of the resistor R11 and a pin 2 of the MOS tube Q3 and VCC, the other end of the resistor R5 is respectively and electrically connected with one end of the resistor R6 and the pin 2 of the detection chip U2, the other end of the resistor R7 is respectively and electrically connected with one end of the resistor R8 and the pin 1 of the detection chip U2, the other end of the resistor R9 is electrically connected with 2 pins of the triode Q2, the other end of the resistor R11 is electrically connected with one end of the resistor R10, 1 pin of the MOS tube Q3 and 3 pins of the triode Q4 respectively, 3 pins of the MOS tube Q3 are electrically connected with the input end of the pulse driving circuit, the other end of the resistor R10 is electrically connected with 1 pin of the triode Q2, the other end of the resistor R6 is electrically connected with 3 pins of the detection chip U2, one end of the resistor R12, one end of the capacitor C3 and 2 pins of the triode Q4 respectively and is grounded, and the other end of the resistor R12 is electrically connected with the other end of the resistor R8, 3 pins of the triode Q2, the other end of the capacitor C3 and 1 pin of the triode Q4 respectively.

The circuit structure of the pulse driving circuit comprises a timing chip U1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, an excitation coil L1, a diode D1 and an MOS tube Q1, wherein one end of the resistor R1 is respectively electrically connected with 3 pins of the MOS tube Q3, one end of the resistor R2, 4 pins of the timing chip U1, 8 pins of the timing chip U1, the cathode of the diode D1 and the anode of the excitation coil L1, the other end of the resistor R1 is respectively electrically connected with 2 pins of the timing chip U1, 6 pins of the timing chip U1 and one end of the capacitor C1, the other end of the capacitor C1 is respectively electrically connected with the other end of the resistor R2, one end of the capacitor C2, one end of the resistor R4 and 3 pins of the MOS tube Q1, the 3 pins of the timing chip U1 are electrically connected with one end of the resistor R3, the other end of the resistor R3 is respectively electrically connected with the other end of the resistor R4 and the 1 pin of the MOS tube Q1, the other end of the capacitor C2 is electrically connected with the cathode of the timing chip U1 and the anode of the diode Q1, and the cathode of the diode L1 are respectively electrically connected with the pin of the diode R2.

The pulse driving circuit utilizes a 555 timer to output a single pulse to control the grid of the input end of the Q1 MOS tube so as to control and output stable voltage, and can adjust the frequency and the duty ratio of a driving signal by adjusting a set resistor and a set capacitor and using a formula Tc =1.1R1 × C1.

The utility model discloses a break-make of detecting chip U2 control Q4 MOS pipe comes the stable voltage of output, realizes the accurate control to action voltage, compares with the tradition, can prevent effectively that external power supply voltage is not enough to lead to the action unreliable.

The utility model discloses can make the shunt opening coil be in the stable power supply of lower voltage during the use, avoid the temperature rise to burn out the separating brake maloperation that coil and short-time circular telegram caused, reduce the consumption. And the circuit can be supplied with power in a mode of storing energy and releasing energy, so that the influence of the power consumption of a superior circuit on the power consumption of the circuit is avoided.

The utility model discloses following beneficial effect has: simple structure, low cost and wide application.

Drawings

Fig. 1 is a block diagram of the circuit structure of the present invention.

Fig. 2 is a schematic diagram of a combined circuit composed of the voltage detection circuit, the switch conduction control circuit and the self-locking circuit.

Fig. 3 is a schematic diagram of the pulse driving circuit of the present invention.

The circuit comprises a voltage detection circuit 1, a switch conduction control circuit 2, a self-locking circuit 3 and a pulse driving circuit 4.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): further explanation is given according to attached fig. 1, attached fig. 2, and attached fig. 3, and the voltage-controlled trigger self-locking circuit of this example includes VCC, voltage detection circuit 1, switch conduction control circuit 2, self-locking circuit 3 and pulse drive circuit 4, VCC and the input end electric connection of voltage detection circuit 1, the signal output end of voltage detection circuit 1 and the signal input end electric connection of switch conduction control circuit 2, the signal output end of switch conduction control circuit 2 and the signal input end electric connection of self-locking circuit 3, the signal output end of self-locking circuit 3 and the signal input end electric connection of pulse drive circuit 4.

Voltage detection circuit 1, switch conduction control circuit 2 and self-locking circuit 3 constitute an overall circuit, its circuit structure includes voltage detection chip U2, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C3, triode Q2, triode Q4 and MOS pipe Q3, resistance R5's one end respectively with resistance R7's one end, resistance R9's one end, resistance R11's one end and MOS pipe Q3's 2 pin electric connection and VCC, resistance R5's the other end respectively with resistance R6's one end and detection chip U2's 2 pin electric connection, resistance R7's the other end respectively with resistance R8's one end and detection chip U2's 1 pin electric connection, resistance R9's the other end and triode Q2's 2 pin electric connection, resistance R11's the other end respectively with resistance R10's one end, MOS pipe Q3's 1 pin and detection chip U2's 1 pin electric connection, resistance R3's the other end and triode Q3's the other end respectively the resistance R3's the other end and the other end of resistance R3 pin electric connection of resistance R3 and the other end of triode Q3's the resistance R2 and the other end of resistance R6 and the other end of detection chip U2 electric connection, the resistance R12 electric connection of the resistance R3 and the other end of the resistance R3's one end electric connection of the triode Q3 and the resistance R12 electric connection of the other end of the resistance R3 and the other end of the triode's one end electric connection of the resistance R12 electric connection of the resistance R3 and the resistance R2 electric connection of the resistance.

The circuit structure of the pulse driving circuit 4 comprises a timing chip U1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, an excitation coil L1, a diode D1 and an MOS tube Q1, wherein one end of the resistor R1 is electrically connected with 3 pins of the MOS tube Q3, one end of the resistor R2, 4 pins of the timing chip U1, 8 pins of the timing chip U1, the cathode of the diode D1 and the anode of the excitation coil L1 respectively, the other end of the resistor R1 is electrically connected with 2 pins of the timing chip U1, 6 pins of the timing chip U1 and one end of the capacitor C1 respectively, the other end of the capacitor C1 is electrically connected with the other end of the resistor R2, one end of the capacitor C2, one end of the resistor R4 and 3 pins of the MOS tube Q1 respectively, the 3 pins of the timing chip U1 are electrically connected with one end of the resistor R3, the other end of the resistor R3 is electrically connected with the other end of the resistor R4 and the other end of the pin of the MOS tube Q1, the other end of the capacitor C2 is electrically connected with the cathode of the timing chip U1 and the anode of the diode Q1 of the MOS tube Q1, the diode R2 and the cathode of the diode Q1 are electrically connected with the diode Q1 respectively.

The above description is only for the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a circuit of voltage-controlled auto-lock that triggers, includes VCC, voltage detection circuit (1), switch on control circuit (2), self-locking circuit (3) and pulse drive circuit (4), characterized by, VCC and the input electric connection of voltage detection circuit (1), the signal output part of voltage detection circuit (1) and the signal input part electric connection that the switch turned on control circuit (2), the signal output part of switch on control circuit (2) and the signal input part electric connection of self-locking circuit (3), the signal output part of self-locking circuit (3) and the signal input part electric connection of pulse drive circuit (4).

2. The circuit according to claim 1, wherein the voltage detection circuit (1), the switch conduction control circuit (2) and the self-locking circuit (3) form an integrated circuit, the circuit structure of the circuit includes a voltage detection chip U2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a capacitor C3, a transistor Q2, a transistor Q4 and a MOS transistor Q3, one end of the resistor R5 is electrically connected to one end of the resistor R7, one end of the resistor R9, one end of the resistor R11 and 2 pins of the MOS transistor Q3 respectively and is connected to VCC, the other end of the resistor R5 is electrically connected to one end of the resistor R6 and 2 pins of the detection chip U2, the other end of the resistor R7 is electrically connected to one end of the resistor R8 and 1 pin of the detection chip U2 respectively, the other end of the resistor R9 is electrically connected to 2 pins of the transistor Q2, the other end of the resistor R10 is electrically connected to one pin of the resistor R10, the pin of the resistor R3 and the pin of the detection chip Q2, the other end of the resistor R3 is electrically connected to one pin of the transistor Q3, and the other end of the transistor Q4 is electrically connected to one pin of the resistor R3, and the resistor R3 are electrically connected to the capacitor C2 pin of the transistor Q3, and the transistor Q3 are electrically connected to the input terminal of the transistor Q3, and the resistor R3, and the transistor Q3 are electrically connected to the resistor R3, and the transistor Q3, and the resistor R3 are electrically connected to the other end of the resistor R3, and the transistor Q3 are electrically connected to the resistor R4.

3. The circuit of claim 2, wherein the pulse driving circuit (4) comprises a timing chip U1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a field coil L1, a diode D1, and a MOS transistor Q1, wherein one end of the resistor R1 is electrically connected to pin 3 of the MOS transistor Q3, one end of the resistor R2, pin 4 of the timing chip U1, pin 8 of the timing chip U1, a cathode of the diode D1, and an anode of the field coil L1, respectively, the other end of the resistor R1 is electrically connected to pin 2 of the timing chip U1, pin 6 of the timing chip U1, and one end of the capacitor C1, the other end of the capacitor C1 is electrically connected to the other end of the resistor R2, one end of the resistor R4, and pin 3 of the MOS transistor Q1, the pin 3 of the timing chip U1 is electrically connected to one end of the resistor R3, and the other end of the resistor R3 is electrically connected to pin R4, the pin of the resistor R1, the other end of the resistor R1, the pin 3, the pin of the other end of the resistor R1, the pin of the cathode of the transistor Q1, and the anode of the transistor Q1, and the diode Q1, the diode Q1.