CN220604567U - Power supply control circuit based on magnetic latching - Google Patents
Power supply control circuit based on magnetic latching Download PDFInfo
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- CN220604567U CN220604567U CN202322142505.9U CN202322142505U CN220604567U CN 220604567 U CN220604567 U CN 220604567U CN 202322142505 U CN202322142505 U CN 202322142505U CN 220604567 U CN220604567 U CN 220604567U
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Abstract
The application relates to the technical field of emergency power supplies and discloses a power supply control circuit based on magnetic latching, which comprises a magnetic latching relay module, a relay driving module and a protection module; the relay driving module comprises a first pin and a second pin, and is electrically connected with the first pin and the second pin and provided with a singlechip, and the relay driving module is used for responding to the high-low level output by the singlechip to control the output of the pulse signal; the magnetic latching relay module comprises a magnetic latching relay, the magnetic latching relay comprises a movable contact, an output point, a normally closed point and a normally open point, the normally open point is electrically connected to the positive electrode of the emergency power supply, the normally closed point is electrically connected to the positive electrode of the elevator control power supply, the output point is electrically connected with the elevator control cabinet, and the magnetic latching relay module is electrically connected to the relay driving module and is used for responding to the output of the pulse signal to control the action of the brake contact. The relay driving module can control the pulse voltage to control the magnetic latching relay module to work. The method has the advantages of solving the problem of coil aging and reducing energy consumption.
Description
Technical Field
The application relates to the field of emergency power supplies, in particular to a power supply control circuit based on magnetic latching.
Background
With the development of technology, high-rise buildings in cities are increasing, and elevators are becoming popular. People enjoy the convenience brought by the elevator, and pay more attention to the safety of the elevator. Elevators in many cities have been used for a long time, and power supply facilities thereof have the condition of equipment aging, and sometimes sudden power failure can lead to the stop of the elevator in the running process; likewise, a sudden interruption of mains supply can cause the elevator to stop running, which can cause a panic of the personnel. An emergency power system must be present to ensure that there is sufficient power to complete the elevator to reach a level and the elevator door opening action when the elevator suddenly stops operating in order to rescue the resident in the elevator.
Currently, an emergency power supply control circuit of an elevator is turned on and off by using a relay, which is an electric control device that gives a prescribed input amount and is maintained for a sufficient time, and a controlled amount is subjected to a predetermined step change in an electric output circuit. When the input amount is reduced to a certain degree and kept for a long enough time, the state is restored to the original state.
However, when the relay is used as a main element of the emergency power supply control circuit, the relay is required to be kept in a power supply state when no fault occurs in the elevator, the coil is easy to age, and the energy consumption is too high.
Disclosure of Invention
In order to solve the problem of coil ageing, reduce the energy consumption, improve economic benefits, the application provides a power control circuit based on magnetic latching.
The application provides a power control circuit based on magnetic latching adopts following technical scheme:
a power supply control circuit based on magnetic latching comprises a magnetic latching relay module, a relay driving module and a protection module; the relay driving module comprises a first pin and a second pin, a singlechip is electrically connected with the first pin and the second pin, and the relay driving module is used for responding to the high-low level output by the singlechip to control the output of pulse signals; the magnetic latching relay module comprises a magnetic latching relay, the magnetic latching relay comprises a movable contact, an output point, a normally closed point and a normally open point, the normally open point is electrically connected to the positive electrode of the standby power supply, the normally closed point is electrically connected to the positive electrode of the elevator control power supply, and the output point is electrically connected with the elevator control cabinet; the magnetic latching relay module is electrically connected to the relay driving module and is used for responding to the output of the pulse signal to control the action of the movable contact.
By adopting the technical scheme, the magnetic latching relay can respond to instantaneous pulse signal output to control the attraction of the braking contact and the normally-closed point, and the normally-closed point state of the magnetic latching relay is kept by the magnetic force generated by the permanent magnet, so that after the attraction action is finished, the coil stops working, the coil can be prevented from ageing as much as possible, and the energy consumption is reduced.
Optionally, the relay driving module includes a first pin, a second pin, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a first triode Q1, a second triode Q2, a third triode Q3, a fourth triode Q4, a fifth triode Q5, a sixth triode Q6, a first pulse signal terminal P1, a second pulse signal terminal P2, and a third coil L3; one end of the first resistor R1 is electrically connected with the first pin, and the other end of the first resistor R1 is electrically connected with the base electrode of the first triode Q1; the emitter of the first triode Q1 is electrically connected with one end of the second resistor R2, and the other end of the second resistor R2 is electrically connected with the positive electrode of the first direct current power supply V1; the collector of the first triode Q1 is electrically connected to one end of the third resistor R3.
Through adopting above-mentioned technical scheme, first pin electricity is connected to the singlechip, and whether the singlechip can detect the elevator and break down, when the elevator breaks down, first pin output low level.
Optionally, the other end of the third resistor R3 is electrically connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is grounded; the electrical connection point of the third resistor R3 and the fourth resistor R4 is a first voltage division point, the first voltage division point is electrically connected with the base electrode of the second triode Q2, the emitter electrode of the second triode Q2 is grounded, and the collector electrode of the second triode Q2 is electrically connected with the second pulse signal end P2; one end of the fifth resistor R5 is electrically connected to the second triode Q2, the other end of the fifth resistor R5 is electrically connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is electrically connected to the positive electrode of the second dc power supply V2, the electrical connection point between the fifth resistor R5 and the sixth resistor R6 is a second voltage division point, the second voltage division point is electrically connected to the base electrode of the third triode Q3, and the emitter electrode of the third triode Q3 is electrically connected to the first pulse signal end P1.
Through adopting above-mentioned technical scheme, when elevator trouble, first pin output low level, first triode Q1 switches on to second triode Q2 switches on, and second pulse signal end P2 ground, thereby second pulse signal end P2 output low level.
Optionally, one end of the seventh resistor R7 is electrically connected to the second pin, the other end of the seventh resistor R7 is electrically connected to the base of the fourth triode Q4, the emitter of the fourth triode Q4 is electrically connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 is electrically connected to the positive electrode of the third dc power supply V3; the collector of the fourth transistor Q4 is electrically connected to the ninth resistor R9.
Through adopting above-mentioned technical scheme, the second pin electricity is connected to the singlechip, and whether the singlechip can detect the elevator and break down, when the elevator breaks down, the high level of second pin output.
Optionally, the other end of the ninth resistor R9 is electrically connected to the tenth resistor R10, the other end of the tenth resistor R10 is grounded, the electrical connection point between the ninth resistor R9 and the tenth resistor R10 is a third voltage division point, the third voltage division point is electrically connected to the fifth triode Q5, one end of the fifth triode Q5 is electrically connected to the first pulse signal terminal P1, and the emitter of the fifth triode Q5 is grounded; one end of the eleventh resistor R11 is electrically connected to the collector of the fifth triode Q5, the other end of the eleventh resistor R11 is electrically connected to the twelfth resistor R12, the other end of the twelfth resistor R12 is electrically connected to the second dc power supply V2, the electrical connection point between the eleventh resistor R11 and the twelfth resistor R12 is a fourth voltage division point, the fourth voltage division point is electrically connected to the base of the fourth triode Q4, the emitter of the fourth triode Q4 is electrically connected to the positive electrode of the second dc power supply V2, and the collector of the fourth triode Q4 is electrically connected to the second pulse signal terminal P2.
Through adopting above-mentioned technical scheme, when elevator trouble, second pin output high level, fourth triode Q4, fifth triode Q5 and sixth triode Q6 all are in the off-state, and eleventh resistor R11 and twelfth resistor R12 carry out the bleeder, and eleventh resistor R11 is connected with first pulse end P1 electricity to first pulse signal end output high level.
Optionally, one end of the coil L3 is electrically connected to the first pulse signal terminal P1, and the other end of the coil L3 is electrically connected to the second pulse signal terminal P2.
By adopting the above technical scheme, the coil L3 can be connected in series with the first pulse signal terminal P1 and the second pulse signal terminal P2.
Optionally, the magnetic latching relay module includes a first magnetic latching relay U1, a second magnetic latching relay U2, a coil L1, and a coil L2; the first magnetic latching relay U1 comprises a first movable contact, a first normally open point and a first normally closed point; the second magnetic latching relay U2 comprises a second movable contact, a second normally open point and a second normally closed point; the coil L1 comprises a first contact end and a second contact end, and the coil L2 comprises a third contact end and a fourth contact end; the first contact end and the third contact end are electrically connected with the second pulse signal end P2, and the second contact end and the fourth contact end are electrically connected with the first pulse signal end P1; the first normally-closed point and the second normally-closed point are electrically connected with the positive electrode of the standby power supply, and the first normally-open point and the second normally-open point are electrically connected with the positive electrode of the elevator control power supply.
By adopting the technical scheme, the magnetic latching relay responds to the output of the pulse signal to control the action of the movable contact; when the elevator fails, the first pulse signal end P1 outputs a high level, the second pulse signal end P2 outputs a low level, the coil L1 and the coil L2 generate a magnetic field, the first movable contact of the first magnetic latching relay U1 is attracted with the first normally closed point, the second movable contact of the second magnetic latching relay U2 is attracted with the first normally closed point, and the elevator starts a standby power supply.
Optionally, the protection module includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4; the cathode of the first diode D1 is electrically connected with the anode of the direct current power supply V3, the anode of the first diode D1 is electrically connected with the cathode of the second diode D2, and the anode of the second diode D2 is grounded; the cathode of the third diode D3 is electrically connected with the anode of the direct current power supply V3, the cathode of the third diode D3 is electrically connected with the cathode of the fourth diode D4, and the anode of the fourth diode D4 is grounded; the second diode D2 is electrically connected to the second pulse signal terminal P2, and the third diode D3 is electrically connected to the first pulse signal terminal P1.
By adopting the technical scheme, the diode in the protection module can release the first pulse signal and the second pulse signal, and the coil of the magnetic latching relay can be prevented from being broken down as much as possible.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the normally closed state of the magnetic latching relay is kept by the magnetic force generated by the permanent magnet, so that the coil can be prevented from ageing as much as possible, and the energy consumption is reduced.
2. The diode can release the first pulse signal and the second pulse signal, and the coil of the magnetic latching relay can be prevented from being broken down as much as possible.
Drawings
FIG. 1 is an overall circuit diagram of a magnetic latching-based power control circuit;
FIG. 2 is a circuit diagram of a relay drive module of a magnetic latching based power control circuit;
FIG. 3 is a circuit diagram of a magnetic latching relay module of a magnetic latching based power control circuit;
fig. 4 is a protection circuit diagram of a power control circuit based on magnetic latching.
Reference numerals: 1. a magnetic latching relay module; 101. a first contact end; 102. a second contact end; 103. a third contact end; 104. a fourth contact end; 2. a relay driving module; 201. a first pin; 202. a second pin; 3. and protecting the module.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The embodiment of the application discloses a power supply control circuit based on magnetic latching. Referring to fig. 1, the magnetic latching relay comprises a magnetic latching relay module 1, a relay driving module 2 and a protection module 3; the relay driving module 2 comprises a first pin 201 and a second pin 202, the first pin 201 and the second pin 202 are electrically connected to the single chip microcomputer, and the relay driving module 2 is used for responding to the high-low level output by the single chip microcomputer to control the output of pulse signals; the magnetic latching relay module 1 comprises a magnetic latching relay, the magnetic latching relay comprises a movable contact, a normally closed point and a normally open point, the normally open point is electrically connected to the positive electrode of an elevator control power supply, the normally closed point is electrically connected to the positive electrode of a standby power supply, and the magnetic latching relay module 1 is electrically connected to the relay driving module 2 and is used for responding to the output of a pulse signal to control the action of the movable contact of the magnetic latching relay.
Referring to fig. 2, the relay driving module 2 includes a first pin 201, a second pin 202, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, a first pulse signal terminal P1, a second pulse signal terminal P2, and a third coil L3. One end of the first resistor R1 is electrically connected with the first pin 201, and the other end of the first resistor R1 is electrically connected with the base electrode of the first triode Q1; the emitter of the first triode Q1 is electrically connected with one end of a second resistor R2, and the other end of the second resistor R2 is electrically connected with the positive electrode of the first direct current power supply V1; the collector of the first triode Q1 is electrically connected with one end of a third resistor R3, the other end of the third resistor R3 is electrically connected with one end of a fourth resistor R4, and the other end of the fourth resistor R4 is grounded; the electrical connection point of the third resistor R3 and the fourth resistor R4 is a first voltage division point, the first voltage division point is electrically connected with the base electrode of the second triode Q2, the emitter electrode of the second triode Q2 is grounded, and the collector electrode of the second triode Q2 is electrically connected with the second pulse signal end P2. One end of the fifth resistor R5 is electrically connected with the second triode Q2, the other end of the fifth resistor R5 is electrically connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is electrically connected with the positive electrode of the second direct current power supply V2, the electrical connection point of the fifth resistor R5 and the sixth resistor R6 is a second voltage division point, the second voltage division point is electrically connected with the base electrode of the third triode Q3, and the emitter electrode of the third triode Q3 is electrically connected with the first pulse signal end P1.
Referring to fig. 2, one end of a seventh resistor R7 is electrically connected to the second pin 202, the other end of the seventh resistor R7 is electrically connected to the base of a fourth transistor Q4, the emitter of the fourth transistor Q4 is electrically connected to one end of an eighth resistor R8, and the other end of the eighth resistor R8 is electrically connected to the positive electrode of a third dc power supply V3; the collector of the fourth triode Q4 is electrically connected with a ninth resistor R9, the other end of the ninth resistor R9 is electrically connected with a tenth resistor R10, the other end of the tenth resistor R10 is grounded, the electrical connection point of the ninth resistor R9 and the tenth resistor R10 is a third voltage division point, the third voltage division point is electrically connected with a fifth triode Q5, one end of the fifth triode Q5 is electrically connected with a first pulse signal end P1, and the emitter of the fifth triode Q5 is grounded. One end of the eleventh resistor R11 is electrically connected with the collector of the fifth triode Q5, the other end of the eleventh resistor R11 is electrically connected with the twelfth resistor R12, the other end of the twelfth resistor R12 is electrically connected with the second direct current power supply V2, the electrical connection point between the eleventh resistor R11 and the twelfth resistor R12 is a fourth voltage division point, the fourth voltage division point is electrically connected with the base of the fourth triode Q4, the emitter of the fourth triode Q4 is electrically connected with the positive electrode of the second direct current power supply V2, and the collector of the fourth triode Q4 is electrically connected with the second pulse signal end P2. One end of the coil L3 is electrically connected to the first pulse signal terminal P1, and the other end of the coil L3 is electrically connected to the second pulse signal terminal P2.
Referring to fig. 2, when the first pin 201 outputs a low level, the base of the first transistor Q1 receives the low level, the first transistor Q1 is turned on, the second resistor R2, the third resistor R3 and the fourth resistor R4 divide the voltage, so that the base of the second transistor Q2 receives a high level, the second transistor Q2 is turned on, the emitter of the second transistor Q2 is grounded, so that the second pulse signal terminal P2 is grounded, and the second pulse signal terminal P2 outputs a low level. The fifth resistor R5 and the sixth resistor R6 divide the voltage, the voltage at the second division point is smaller than the voltage of the second direct current source V2, and the third transistor Q3 is turned on. Meanwhile, the second pin 202 outputs a high level, the base of the fourth transistor Q4 receives a high level, the fourth transistor Q4 is turned off, the fifth transistor Q5 is turned off, the sixth transistor Q6 is turned off, the eleventh resistor R11 and the twelfth resistor R12 divide the voltage, the eleventh resistor R11 is electrically connected to the first pulse terminal P1, and the first pulse signal terminal P1 outputs a high level.
Referring to fig. 2, when the first pin 201 outputs a high level and the second pin 202 outputs a high level, the third transistor Q3, the fourth transistor Q4, the fifth transistor Q5 and the sixth transistor Q6 are all non-conductive, and the whole circuit of the relay driving module 2 is in an off state, air can flow in, and a high-resistance circuit is formed. When the first pin 201 outputs a low level and the second pin 202 outputs a low level, the third transistor Q3, the fourth transistor Q4, the fifth transistor Q5 and the sixth transistor Q6 are all turned on, and the whole circuit of the relay driving module 2 is in a short circuit state.
Referring to fig. 3, the magnetic latching relay module 1 includes a first magnetic latching relay U1, a second magnetic latching relay U2, a coil L1, and a coil L2; the first magnetic latching relay U1 comprises a first movable contact, a first normally open point and a first normally closed point; the second magnetic latching relay U2 comprises a second movable contact, a second normally open point and a second normally closed point; the coil L1 comprises a first contact end 101 and a second contact end 102, and the coil L2 comprises a third contact end 103 and a fourth contact end 104. The first contact terminal 101 and the third contact terminal 103 are electrically connected to the second pulse signal terminal P2, and the second contact terminal 102 and the fourth contact terminal 104 are electrically connected to the first pulse signal terminal P1. The first normally-closed point and the second normally-closed point are electrically connected with the positive electrode of the standby power supply, and the first normally-open point and the second normally-open point are electrically connected with the positive electrode of the elevator control power supply.
Referring to fig. 3, when an elevator fails, the first pulse signal terminal P1 outputs a high level, while the second pulse signal terminal P2 outputs a low level, the coils L1 and L2 generate a magnetic field, the first moving contact of the first magnetic latching relay U1 is attracted to the first normally closed point, the second moving contact of the second magnetic latching relay U2 is attracted to the first normally closed point, and the elevator enables a standby power supply.
Referring to fig. 4, the protection module 3 includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4. The negative pole of first diode D1 is connected with the positive pole electricity of DC power supply V3, and the positive pole of first diode D1 is connected with the negative pole electricity of second diode D2, and the positive pole of second diode D2 is ground. The negative electrode of the third diode D3 is electrically connected to the positive electrode of the dc power supply V3, the negative electrode of the third diode D3 is electrically connected to the negative electrode of the fourth diode D4, and the positive electrode of the fourth diode D4 is grounded. The second diode D2 is electrically connected to the second pulse signal terminal P2, and the third diode D3 is electrically connected to the first pulse signal terminal P1. The diode in the protection module 3 can release the first pulse signal and the second pulse signal, and the coil of the magnetic latching relay can be prevented from being broken down as much as possible.
The implementation principle of the power supply control circuit based on the magnetic latching relay is as follows: when the elevator fails, the first pin 201 outputs a low level, the first triode Q1 is turned on, so that the second triode Q2 is turned on, the second pulse signal end P2 is grounded, the second pulse signal voltage is low level, meanwhile, the second pin 202 outputs a high level, the fourth triode Q4, the fifth triode Q5 and the sixth triode Q6 are all in an off state, the eleventh resistor R11 and the twelfth resistor R12 are used for voltage division, the eleventh resistor R11 is electrically connected with the first pulse end P1, and the first pulse voltage is high level; the first pulse signal end P1 outputs a high level, the second pulse signal end P2 outputs a low level, the coil L1 and the coil L2 generate a magnetic field, the first movable contact of the first magnetic latching relay U1 is attracted with the first normally closed point, the second movable contact of the second magnetic latching relay U2 is attracted with the first normally closed point, and the elevator starts a standby power supply.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The power supply control circuit based on magnetic latching is characterized by comprising a magnetic latching relay module (1), a relay driving module (2) and a protection module (3); the relay driving module (2) comprises a first pin (201) and a second pin (202), a singlechip is electrically connected with the first pin (201) and the second pin (202), and the relay driving module (2) is used for responding to the high and low level output by the singlechip to control the output of a pulse signal; the magnetic latching relay module (1) comprises a magnetic latching relay, the magnetic latching relay comprises a movable contact, an output point, a normally closed point and a normally open point, the normally open point is electrically connected to the positive electrode of a standby power supply, the normally closed point is electrically connected to the positive electrode of an elevator control power supply, and the output point is electrically connected with an elevator control cabinet; the magnetic latching relay module (1) is electrically connected to the relay driving module (2) and is used for responding to the output of the pulse signal to control the action of the movable contact.
2. The magnetic latching-based power supply control circuit of claim 1, wherein said relay driving module (2) comprises a first pin (201), a second pin (202), a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, a first pulse signal terminal P1, a second pulse signal terminal P2, and a third coil L3; one end of the first resistor R1 is electrically connected with the first pin (201), and the other end of the first resistor R1 is electrically connected with the base electrode of the first triode Q1; the emitter of the first triode Q1 is electrically connected with one end of the second resistor R2, and the other end of the second resistor R2 is electrically connected with the positive electrode of the first direct current power supply V1; the collector of the first triode Q1 is electrically connected to one end of the third resistor R3.
3. A magnetic latching-based power supply control circuit according to claim 2, wherein the other end of said third resistor R3 is electrically connected to one end of said fourth resistor R4, the other end of said fourth resistor R4 being grounded; the electrical connection point of the third resistor R3 and the fourth resistor R4 is a first voltage division point, the first voltage division point is electrically connected with the base electrode of the second triode Q2, the emitter electrode of the second triode Q2 is grounded, and the collector electrode of the second triode Q2 is electrically connected with the second pulse signal end P2; one end of the fifth resistor R5 is electrically connected to the second triode Q2, the other end of the fifth resistor R5 is electrically connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is electrically connected to the positive electrode of the second dc power supply V2, the electrical connection point between the fifth resistor R5 and the sixth resistor R6 is a second voltage division point, the second voltage division point is electrically connected to the base electrode of the third triode Q3, and the emitter electrode of the third triode Q3 is electrically connected to the first pulse signal end P1.
4. A power supply control circuit based on magnetic latching according to claim 2, wherein one end of said seventh resistor R7 is electrically connected to said second pin (202), the other end of said seventh resistor R7 is electrically connected to the base of said fourth transistor Q4, the emitter of said fourth transistor Q4 is electrically connected to one end of said eighth resistor R8, and the other end of said eighth resistor R8 is electrically connected to the positive electrode of a third dc power supply V3; the collector of the fourth transistor Q4 is electrically connected to the ninth resistor R9.
5. The magnetic latching-based power supply control circuit according to claim 2, wherein the other end of the ninth resistor R9 is electrically connected to the tenth resistor R10, the other end of the tenth resistor R10 is grounded, the electrical connection point between the ninth resistor R9 and the tenth resistor R10 is a third voltage division point, the third voltage division point is electrically connected to the fifth transistor Q5, one end of the fifth transistor Q5 is electrically connected to the first pulse signal terminal P1, and the emitter of the fifth transistor Q5 is grounded; one end of the eleventh resistor R11 is electrically connected to the collector of the fifth triode Q5, the other end of the eleventh resistor R11 is electrically connected to the twelfth resistor R12, the other end of the twelfth resistor R12 is electrically connected to the second dc power supply V2, the electrical connection point between the eleventh resistor R11 and the twelfth resistor R12 is a fourth voltage division point, the fourth voltage division point is electrically connected to the base of the fourth triode Q4, the emitter of the fourth triode Q4 is electrically connected to the positive electrode of the second dc power supply V2, and the collector of the fourth triode Q4 is electrically connected to the second pulse signal terminal P2.
6. The magnetic latching-based power supply control circuit according to claim 2, wherein one end of the coil L3 is electrically connected to the first pulse signal terminal P1, and the other end of the coil L3 is electrically connected to the second pulse signal terminal P2.
7. A power supply control circuit based on magnetic latching according to claim 2, characterized in that the magnetic latching relay module (1) comprises a first magnetic latching relay U1, a second magnetic latching relay U2, a coil L1 and a coil L2; the first magnetic latching relay U1 comprises a first movable contact, a first normally open point and a first normally closed point; the second magnetic latching relay U2 comprises a second movable contact, a second normally open point and a second normally closed point; the coil L1 comprises a first contact end (101) and a second contact end (102), and the coil L2 comprises a third contact end (103) and a fourth contact end (104); the first contact end (101) and the third contact end (103) are electrically connected with a second pulse signal end P2, and the second contact end (102) and the fourth contact end (104) are electrically connected with a first pulse signal end P1; the first normally-closed point and the second normally-closed point are electrically connected with the positive electrode of the standby power supply, and the first normally-open point and the second normally-open point are electrically connected with the positive electrode of the elevator control power supply.
8. A power supply control circuit based on magnetic latching according to claim 2, characterized in that the protection module (3) comprises a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4; the cathode of the first diode D1 is electrically connected with the anode of the direct current power supply V3, the anode of the first diode D1 is electrically connected with the cathode of the second diode D2, and the anode of the second diode D2 is grounded; the cathode of the third diode D3 is electrically connected with the anode of the direct current power supply V3, the cathode of the third diode D3 is electrically connected with the cathode of the fourth diode D4, and the anode of the fourth diode D4 is grounded; the second diode D2 is electrically connected to the second pulse signal terminal P2, and the third diode D3 is electrically connected to the first pulse signal terminal P1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322142505.9U CN220604567U (en) | 2023-08-09 | 2023-08-09 | Power supply control circuit based on magnetic latching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322142505.9U CN220604567U (en) | 2023-08-09 | 2023-08-09 | Power supply control circuit based on magnetic latching |
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| Publication Number | Publication Date |
|---|---|
| CN220604567U true CN220604567U (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322142505.9U Active CN220604567U (en) | 2023-08-09 | 2023-08-09 | Power supply control circuit based on magnetic latching |
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| Country | Link |
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| CN (1) | CN220604567U (en) |
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2023
- 2023-08-09 CN CN202322142505.9U patent/CN220604567U/en active Active
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