CN216553417U - Electronic lock control circuit - Google Patents

Abstract

The utility model discloses an electronic lock control circuit which comprises a control unit, an electronic lock control circuit, an electronic lock, a first power supply and a second power supply, wherein the output end of the control unit is electrically connected with the input end of the electronic lock control circuit, the output end of the electronic lock control circuit is electrically connected with the input end of the electronic lock, and the output ends of the first power supply and the second power supply are electrically connected with the input end of the electronic lock control circuit. The circuit of the utility model has the characteristics of simple circuit form and high reliability; positive and negative pulses required by the electronic lock can be generated only by inputting a high-low level signal A, the pulse width is determined by a circuit device without additionally adding components, and the expense of calculating the pulse width by program software is reduced; the circuit also has a power-off automatic unlocking function, and the situation that the electronic lock cannot be unlocked because negative pulses cannot be generated after power-off is avoided.

Description

Electronic lock control circuit

Technical Field

The utility model relates to the technical field of electronic locks, in particular to an electronic lock control circuit.

Background

Fill electric pile and be the equipment of filling that provides charging service for electric automobile. The charging device mainly comprises a floor type charging pile and a wall-mounted charging pile, and mainly adopts charging modes of timing, electricity metering and money counting. In order to prevent the charging pile from being accidentally disconnected in the charging process of the electric automobile, an electronic lock is matched in a common charging gun, the electronic lock is controlled to be in a locking state during charging, accidental disconnection is prevented, the electronic lock is controlled to be in an unlocking state during non-charging, and the charging gun can be pulled out from a charging interface of the electric automobile. The electronic lock is generally controlled by positive and negative 12V pulses, the electronic lock is locked by adding positive 12V pulse signals at two ends of the electronic lock, and is unlocked by adding negative 12V pulse signals.

However, the electronic lock control circuit in the prior art has complex circuit design and high production cost.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an electronic lock control circuit to solve the above problems.

In order to solve the technical problems, the utility model provides the following technical scheme: the electronic lock control circuit comprises a control unit, an electronic lock control circuit, an electronic lock, a first power supply and a second power supply, wherein the output end of the control unit is electrically connected with the input end of the electronic lock control circuit, the output end of the electronic lock control circuit is electrically connected with the input end of the electronic lock, and the output ends of the first power supply and the second power supply are electrically connected with the input end of the electronic lock control circuit.

Furthermore, the electronic lock control circuit comprises a resistor R1, the resistor R1 is connected with an input signal A in series, the resistor R1 is connected with a resistor R2 in parallel, the resistor R2 is connected with a triode Q1 in parallel, the triode Q1 is grounded, and the input signal A is an input control signal.

Further, the transistor Q1 is connected in series to a relay RLY1, the relay RLY1 is connected in parallel to a diode D2, and 8 pins of the relay RLY1 are connected in series to the first power supply.

Further, the normally open contact 5 of the relay RLY1 is grounded, and the normally open contact 2, the normally open contact 3 and the normally open contact 6 of the relay RLY1 are all connected in series with a diode D1, and the diode D1 is connected in series with the second power supply.

Furthermore, a capacitor E1 is connected in series with the normally open contact 1 of the relay RLY1, an output signal C is connected in series with the capacitor E1, the output signal C is connected in series with the electronic lock, an output signal D is connected in series with the normally open contact 4 of the relay RLY1, and the output signal C and the output signal D are output pulse signals.

Furthermore, the first power supply is VDD1, the second power supply is VDD2, the electronic lock is EL, and VDD1 and VDD2 are power supplies.

Compared with the prior art, the utility model has the following beneficial effects:

1. the circuit of the utility model has the characteristics of simple circuit form and high reliability; the electronic lock can generate positive and negative pulses required by controlling the electronic lock only by inputting a high-low level signal A, the high level is input, the electronic lock control board outputs the positive pulses, the electronic lock locks, the low level is input, the electronic lock control board outputs the negative pulses, the electronic lock unlocks, the pulse width is determined by a circuit device without additionally adding components, and the expense of calculating the pulse width by program software is reduced; the circuit also has a power-off automatic unlocking function, so that the situation that negative pulses cannot be generated after power-off and the electronic lock cannot be unlocked is avoided; the circuit can realize the isolation of the input control signal and the output electronic lock control signal, and if the VDD1 and the VDD2 are in short circuit without isolation, the same group of power supplies are adopted for supplying power.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of the connection of the integral modules of the present invention;

figure 2 is a circuit diagram of the electronic lock control circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: electronic lock control circuit, including control unit, electronic lock control circuit, electronic lock, power one and power two, control unit's output with electronic lock control circuit's input electric connection, electronic lock control circuit's output with electronic lock's input electric connection, power one with power two's output all with electronic lock control circuit's input electric connection, electronic lock control circuit includes resistance R1, resistance R1 series connection input signal A, resistance R1 is parallelly connected with resistance R2, resistance R2 is parallelly connected with triode Q1, triode Q1 ground connection, triode Q1 is established ties with relay RLY1, relay RLY1 is parallelly connected with diode D2, 8 pins of relay RLY1 are established ties power one, relay RLY 1's normally open contact 5 ground connection, relay RLY 1's normally open contact 2, 2, Normally open contact 3 and normally open contact 6 all establish ties diode D1, diode D1 establishes ties power two, relay RLY 1's normally open contact 1 establishes ties there is electric capacity E1, electric capacity E1 establishes ties there is output signal C, output signal C with the electronic lock is established ties, relay RLY 1's normally open contact 4 establishes ties there is output signal D, output signal D with the electronic lock is established ties, power one is VDD1, power two is VDD2, the electronic lock is the EL.

The specific implementation mode is as follows: when the electronic lock is used, an input signal A is an input control signal, an output signal C and an output signal D are output pulse signals, VDD1 and VDD2 are power supplies, when the input signal A is high level, the voltage is divided by a resistor R1 and a resistor R2, the voltage of a point B is increased, a triode Q1 is conducted, a relay RLY1 is attracted, a normally open contact 1-2 of the relay RLY1 is conducted with 4-5, VDD2 applies the voltage VDD2 to a capacitor E1 and the electronic lock through a diode D1 and 1-2 and 4-5 of the relay RLY1, due to the characteristic that the capacitor E1 is isolated from direct current, the VDD2 applies a short-circuit state to the capacitor E1 and the electronic lock at the moment (namely the attraction moment of the relay RLY 1), the capacitor E1 is equivalent to a short-circuit state, the VDD2 is completely acted on the electronic lock, the electronic lock obtains a negative voltage of positive D and the positive D, the electronic lock is locked, and the voltage drops to zero after the capacitor is fully charged until the capacitor VDD2 is fully acted, the electronic lock obtains the pulse voltage of C positive and D negative, and the pulse width is determined by the capacity value of E1; when an input signal A is at a low level, voltage at a point B is also at a low level through a resistor R1, a triode Q1 is not conducted, a relay RLY1 is disconnected, a normally closed contact 1-3 of the relay RLY1 is connected with a normally closed contact 4-6, a capacitor E1 discharges to an electronic lock through normally open contacts 1-3 and 4-6 of the relay RLY1, the electronic lock obtains voltage of positive D and negative C, the electronic lock is unlocked, the capacitor discharges to the end, voltage between the electronic lock C and the electronic lock D is reduced to zero, the electronic lock obtains pulse voltage of the positive D and the negative C, and the pulse width is determined by the capacity value of E1; the input signal acts on 7-8 pins of a coil of a relay RLY1 through a triode Q1, and the electronic lock is connected with 4-1 pins of a contact of the relay RLY1, so that the input signal and positive and negative pulse signals of the electronic lock can be isolated by using different power supplies, and if the isolation is not needed, only VDD1 and VDD2 are connected with the same group of power supplies; when the relay RLY1 is pulled in, the capacitor E1 is charged and the electronic lock is in a locked state, if the VDD1 is powered off suddenly and normally by the VDD2, due to the existence of the diode D1, the capacitor E1 cannot discharge power supply of the VDD2 through the relay RLY1, and when the relay RLY1 is disconnected, the capacitor E1 can still generate positive D voltage and negative C voltage to the electronic lock through the relay RLY1 to unlock the electronic lock; if VDD1 suddenly loses power and VDD2 is normal, the relay RLY1 is automatically disconnected due to power loss, and the capacitor E1 generates D positive and C negative voltage to the electronic lock through the relay RLY1 to unlock the electronic lock; if VDD1 and VDD2 are powered down at the same time, due to the existence of diode D1, capacitor E1 cannot discharge to VDD2 power supply through relay RLY1, and meanwhile, relay RLY1 is automatically disconnected due to power loss, capacitor E1 generates D positive and C negative voltage to the electronic lock through relay RLY1 to unlock the electronic lock; if VDD1 and VDD2 are operating in the same manner when a set of power supplies is turned on; namely, the electronic lock is automatically unlocked when power is down; when the charging gun needs to be locked when the charging pile is charged, the control unit only needs to output a high level signal, and when the charging gun needs to be unlocked when the charging pile is not charged, the control unit only needs to output a low level signal; the rifle that charges is in locking state when filling electric pile and charging, also can realize automatic unblock rifle that charges after unusual power failure.

The working principle of the utility model is as follows:

referring to the attached figures 1-2 of the specification, the circuit of the utility model has the characteristics of simple circuit form and high reliability; the electronic lock can generate positive and negative pulses required by controlling the electronic lock only by inputting a high-low level signal A, the high level is input, the electronic lock control board outputs the positive pulses, the electronic lock locks, the low level is input, the electronic lock control board outputs the negative pulses, the electronic lock unlocks, the pulse width is determined by a circuit device without additionally adding components, and the expense of calculating the pulse width by program software is reduced; the circuit also has a power-off automatic unlocking function, so that the situation that negative pulses cannot be generated after power-off and the electronic lock cannot be unlocked is avoided; the circuit can realize the isolation of the input control signal and the output electronic lock control signal, and if the VDD1 and the VDD2 are in short circuit without isolation, the same group of power supplies are adopted for supplying power.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. Electronic lock control circuit, its characterized in that: the electronic lock control system comprises a control unit, an electronic lock control circuit, an electronic lock, a first power supply and a second power supply, wherein the output end of the control unit is electrically connected with the input end of the electronic lock control circuit, the output end of the electronic lock control circuit is electrically connected with the input end of the electronic lock, and the output ends of the first power supply and the second power supply are electrically connected with the input end of the electronic lock control circuit.

2. The electronic lock control circuit according to claim 1, wherein: the electronic lock control circuit comprises a resistor R1, the resistor R1 is connected with an input signal A in series, the resistor R1 is connected with a resistor R2 in parallel, the resistor R2 is connected with a triode Q1 in parallel, and the triode Q1 is grounded.

3. The electronic lock control circuit according to claim 2, wherein: the transistor Q1 is connected in series with a relay RLY1, the relay RLY1 is connected in parallel with a diode D2, and 8 pins of the relay RLY1 are connected in series with the first power supply.

4. The electronic lock control circuit according to claim 3, wherein: the normally open contact 5 of the relay RLY1 is grounded, and the normally open contact 2, the normally open contact 3 and the normally open contact 6 of the relay RLY1 are all connected in series with a diode D1, and the diode D1 is connected in series with the power supply II.

5. The electronic lock control circuit according to claim 4, wherein: the normally open contact 1 of the relay RLY1 is connected in series with a capacitor E1, the capacitor E1 is connected in series with an output signal C, the output signal C is connected in series with the electronic lock, and the normally open contact 4 of the relay RLY1 is connected in series with an output signal D, and the output signal D is connected in series with the electronic lock.

6. The electronic lock control circuit according to claim 1, wherein: the first power supply is VDD1, the second power supply is VDD2, and the electronic lock is EL.

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