CN113863784B - Charging pile electromagnetic lock control circuit and method - Google Patents
Charging pile electromagnetic lock control circuit and method Download PDFInfo
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- CN113863784B CN113863784B CN202111107565.6A CN202111107565A CN113863784B CN 113863784 B CN113863784 B CN 113863784B CN 202111107565 A CN202111107565 A CN 202111107565A CN 113863784 B CN113863784 B CN 113863784B
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention provides a charging pile electromagnetic lock control circuit and a method, wherein the circuit comprises the following components: the circuit comprises a filter circuit, a comparator, a delay circuit and a push-pull circuit; the filter circuit is connected with the comparator and used for outputting the filtered control signal to the comparator; the comparator is connected with the delay circuit and the push-pull circuit and is used for comparing the control signal with the reference signal and controlling the output voltage according to the comparison result; the delay circuit is used for pulling down the output voltage after delaying the preset time. The invention can realize the locking and unlocking control of the electromagnetic lock by only adopting one IO port, saves the IO port resource, does not need additional CPU monitoring in the control process and lightens the burden of the CPU. The output of the IO port is only 1 or 0 state, so that the electromagnetic lock cannot receive a contradictory control instruction.
Description
Technical Field
The invention belongs to the field of charging piles, and particularly relates to a charging pile electromagnetic lock control circuit and a charging pile electromagnetic lock control method.
Background
The electromagnetic lock coil generally adopts +/-12V voltage to drive the locking and unlocking of the electromagnetic lock, for example, the electromagnetic lock is locked by applying +12V between the two ends EL & lt + & gt and EL & lt- & gt of the electromagnetic lock coil and keeping the voltage for more than 200ms-500 ms; and applying-12V and keeping for more than 200ms-500ms, and unlocking the electromagnetic lock. In addition, once the electromagnetic lock is successfully locked or unlocked, the +12V or-12V voltage applied to the two ends of the electromagnetic lock coil is expected to be removed in time so as to prevent the electromagnetic lock coil from being damaged due to overheating.
At present, the commonly used electromagnetic lock control circuit mostly adopts two control signals to drive the EL + and the EL-to switch between +12V and-12V and 0V, if the EL + and the EL-are switched to +12V and the EL-is switched to 0V after the locking signal is triggered, the electromagnetic lock is locked, the locking signal is reset after the locking feedback signal is received, the EL + is switched to 0V, and the electromagnetic lock enters a locking and maintaining state. And similarly, after receiving the unlocking signal, the EL-is switched to +12V, the electromagnetic lock is unlocked, and after successfully receiving the unlocking feedback signal, the EL-is switched to 0V again to realize unlocking and keeping. The control mode needs two paths of control signals and occupies at least 2 IO port resources of the MCU. In addition, this control is relatively complex: 1. after each time of sending the locking or unlocking control signal, the locking or unlocking signal must be reset after the feedback signal state is successfully received, once the feedback signal is abnormal, the locking or unlocking signal may be continuously existed, and the electromagnetic lock is burnt out, of course, the duration of the locking or unlocking control signal may be limited, but this necessarily needs to occupy the CPU resource. 2. Once locking or unblock in-process procedure run away, electromagnetic lock drive signal can't in time remove, has the risk of burning out the electromagnetic lock. 3. The locking and unlocking signals are independent, and the electromagnetic lock risks receiving contradictory instructions.
Disclosure of Invention
The embodiment of the application provides a charging pile electromagnetic lock control circuit and a charging pile electromagnetic lock control method, wherein locking and unlocking signals are respectively realized by high and low level signals; the locking or unlocking driving signal is triggered and then kept until the other signal is triggered, and the driving voltage of the electromagnetic lock coil is automatically released after the driving voltage lasts for a period of time without additional control.
In a first aspect, an embodiment of the present application provides a charging pile electromagnetic lock control circuit, include:
the circuit comprises a filter circuit, a comparator, a delay circuit and a push-pull circuit; the filter circuit is connected with the comparator and used for outputting the filtered control signal to the comparator; the comparator is connected with the delay circuit and the push-pull circuit and used for comparing the control signal with the reference signal and controlling the output voltage according to the comparison result; the delay circuit is used for pulling down the output voltage after delaying preset time.
Wherein the control signal is at a high level or a low level.
Wherein the filter circuit comprises: one end of the resistor R2 is a control signal input end, the other end of the resistor R2 is connected with the non-inverting input end of the first comparator, one end of the resistor R4 is a reference signal input end, and the other end of the resistor R4 is connected with the inverting input end of the first comparator; one end of the resistor R9 is a control signal input end, the other end of the resistor R9 is connected with the inverting input end of the second comparator, one end of the resistor R7 is a reference signal input end, and the other end of the resistor R7 is connected with the same-direction input end of the second comparator.
Wherein the delay circuit comprises:
one end of a resistor R5 is connected with the output end of the first comparator, the other end of the resistor R5 is connected with the anode of a capacitor EC1 and the cathode of a diode D1, the cathode of the capacitor EC1 is connected with a signal ground, the anode of a diode D1 is connected with the base of a triode Q3, the emitter of the triode Q3 is connected with the signal ground, and the collector of the triode Q3 is connected with a push-pull circuit;
one end of a resistor R10 is connected with the output end of the second comparator, the other end of the resistor R10 is connected with the anode of a capacitor EC2 and the cathode of a diode D2, the cathode of the capacitor EC2 is connected with a signal ground, the anode of a diode D2 is connected with the base of a triode Q6, the emitter of the triode Q6 is connected with the signal ground, and the collector of the triode Q6 is connected with a push-pull circuit.
Wherein the push-pull circuit comprises:
the collector of the triode Q1 is connected with 12V voltage, the base of the triode Q1 is connected with the collector of the triode Q3 and the base of the triode Q2, the collector of the triode Q2 is connected with signal ground, and the emitter of the triode Q2 is connected with the emitter of the triode Q1 and the output end A;
the collector of the triode Q4 is connected with 12V voltage, the base of the triode Q4 is connected with the collector of the triode Q6 and the base of the triode Q5, the collector of the triode Q5 is connected with signal ground, and the emitter of the triode Q4 is connected with the emitter of the triode Q5 and the output end B.
Wherein, still include: one end of the resistor R3 is connected with the collector of the triode Q3 and the output end of the first comparator.
Wherein, still include: one end of the resistor R8 is connected with the collector of the triode Q6 and the output end of the second comparator.
Wherein, still include:
one end of the resistor R1 is connected with 12V voltage, and the other end of the resistor R1 is connected with the output end of the first comparator; one end of the resistor R6 is connected with 12V voltage, and the other end of the resistor R6 is connected with the output end of the second comparator.
In a second aspect, the application provides a charging pile electromagnetic lock control method, including:
the filter circuit filters the control signal and outputs the filtered control signal to the comparator;
the comparator compares the control signal with a reference signal and controls the output voltage according to the comparison result;
after the delay circuit delays for a preset time, the output voltage is pulled down.
Wherein the control signal is at a high level or a low level. .
The charging pile electromagnetic lock control circuit and the charging pile electromagnetic lock control method have the following beneficial effects:
this application fills electric pile electromagnetic lock control circuit includes: the circuit comprises a filter circuit, a comparator, a delay circuit and a push-pull circuit; the filter circuit is connected with the comparator and used for outputting the filtered control signal to the comparator; the comparator is connected with the delay circuit and the push-pull circuit and used for comparing the control signal with the reference signal and controlling the output voltage according to the comparison result; the delay circuit is used for pulling down the output voltage after delaying the preset time. The invention can realize the locking and unlocking control of the electromagnetic lock by only adopting one IO port, saves the IO port resource, does not need additional CPU monitoring in the control process and lightens the burden of the CPU. The output of the IO port is only 1 or 0 state, so that the electromagnetic lock cannot receive a contradictory control instruction. In addition, the scheme does not need to increase extra hardware cost.
Drawings
FIG. 1 is a schematic structural diagram of a charging pile electromagnetic lock control circuit according to an embodiment of the application;
fig. 2 is another schematic structural diagram of a charging pile electromagnetic lock control circuit according to the embodiment of the application.
Detailed Description
The present application is further described below with reference to the drawings and examples.
In the following description, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance. The following description provides embodiments of the invention, which may be combined or substituted for various embodiments, and this application is therefore intended to cover all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then this application should also be considered to include an embodiment that includes one or more of all other possible combinations of A, B, C, D, even though this embodiment may not be explicitly recited in text below.
The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.
As shown in fig. 1, the control circuit of the charging pile electromagnetic lock of the present application includes: a filter circuit 201, a comparator 202, a delay circuit 204, and a push-pull circuit 203; the filter circuit 201 is connected to the comparator 202, and is configured to output the filtered control signal to the comparator 202; the comparator 202 is connected with the delay circuit 204 and the push-pull circuit 203, and is used for comparing the control signal with the reference signal and controlling the output voltage according to the comparison result; the delay circuit 204 is used for pulling down the output voltage after delaying for a preset time. Wherein the control signal is at a high level or a low level.
The electromagnetic lock is actually in two states: locking and unlocking. Therefore, the control can be completely realized by high and low levels, such as locking by high level control and unlocking by low level control, and only one IO port is needed. For example, when the locking signal is triggered, that is, the control signal is at a high level, the internal comparison circuit of the drive control circuit outputs a high level and controls the a terminal to output a high level to switch the EL + terminal of the electromagnetic lock to +12V, and meanwhile, the high level signal output by the comparison circuit drives a delayed inverter circuit, after the delay time is reached, the voltage at the a terminal is pulled down, and the EL + terminal of the coil is switched to 0V again, that is, the electromagnetic lock is in a locking holding state. If the unlocking signal is triggered, the drive control circuit receives a low level signal and then drives another comparison circuit in the drive control circuit to output a high level to control the B end to output a high level so as to switch the EL-end of the electromagnetic lock coil to +12V, meanwhile, the high level signal output by the comparison circuit also drives another delayed phase-reversing circuit, after the delay time is up, the B end is pulled down, the coil EL-is switched to 0V, and the electromagnetic lock is in an unlocking holding state.
As shown in fig. 2, in the present application, a filter circuit includes: one end of the resistor R2 is a control signal input end, the other end of the resistor R2 is connected with the non-inverting input end of the first comparator, one end of the resistor R4 is a reference signal input end, and the other end of the resistor R4 is connected with the inverting input end of the first comparator; one end of the resistor R9 is a control signal input end, the other end of the resistor R9 is connected with the inverting input end of the second comparator, one end of the resistor R7 is a reference signal input end, and the other end of the resistor R7 is connected with the same-direction input end of the second comparator. R2, R4, R7, R9 are filter resistors, and the anti-interference capacity of the circuit is improved.
The delay circuit includes: one end of a resistor R5 is connected with the output end of the first comparator, the other end of the resistor R5 is connected with the anode of a capacitor EC1 and the cathode of a diode D1, the cathode of the capacitor EC1 is connected with a signal ground, the anode of a diode D1 is connected with the base of a triode Q3, the emitter of the triode Q3 is connected with the signal ground, and the collector of the triode Q3 is connected with a push-pull circuit; one end of a resistor R10 is connected with the output end of the second comparator, the other end of the resistor R10 is connected with the anode of a capacitor EC2 and the cathode of a diode D2, the cathode of the capacitor EC2 is connected with a signal ground, the anode of a diode D2 is connected with the base of a triode Q6, the emitter of the triode Q6 is connected with the signal ground, and the collector of the triode Q6 is connected with a push-pull circuit.
The push-pull circuit includes: the collector of the triode Q1 is connected with 12V voltage, the base of the triode Q1 is connected with the collector of the triode Q3 and the base of the triode Q2, the collector of the triode Q2 is connected with signal ground, and the emitter of the triode Q2 is connected with the emitter of the triode Q1 and the output end A; the collector of the triode Q4 is connected with 12V voltage, the base of the triode Q4 is connected with the collector of the triode Q6 and the base of the triode Q5, the collector of the triode Q5 is connected with signal ground, and the emitter of the triode Q4 is connected with the emitter of the triode Q5 and the output end B.
As shown in fig. 2, the control circuit for the charging pile electromagnetic lock further includes: one end of the resistor R3 is connected with the collector of the triode Q3 and the output end of the first comparator. One end of the resistor R8 is connected with the collector of the triode Q6 and the output end of the second comparator. One end of the resistor R1 is connected with 12V voltage, and the other end of the resistor R1 is connected with the output end of the first comparator; one end of the resistor R6 is connected with 12V voltage, and the other end of the resistor R6 is connected with the output end of the second comparator.
The invention can realize the locking and unlocking control of the electromagnetic lock by only adopting one IO port, saves the IO port resource, does not need additional CPU monitoring in the control process and lightens the burden of the CPU. The output of the IO port is only 1 or 0 state, so that the electromagnetic lock cannot receive a contradictory control instruction. In addition, the scheme does not need to increase extra hardware cost.
As shown in fig. 2, it is assumed that the high level of the control signal is +12V, the low level is 0V, and R5 is much greater than R1, R10 is much greater than R6, and VREF is 5V.
When the control signal received by the control circuit is at high level, U1A outputs high level, the output of the corresponding push-pull circuit is also at high level, namely the output of the a terminal is +12V, at this moment, U1B outputs low level, the output of the corresponding push-pull circuit is also at low level, namely the output of the B terminal is 0V. At this time, the voltage applied to both ends of the electromagnetic lock coil EL + (connected to the terminal a) and EL- (connected to the terminal B) is +12V, and the electromagnetic lock enters a locked state. The high level output by the U1A passes through the RC circuit and drives the triode Q3, and as long as the parameters of R5 and EC1 are reasonably selected, the Q3 is conducted when the voltage of EC1 is charged to be higher than the clamping voltage of the diode D1 in a reasonable time range, so that the input of a push-pull circuit formed by the triodes Q1 and Q2 is pulled down, and the output A is pulled down at the same time. The voltage across the electromagnetic latch coil EL +, EL-is now 0V.
When the control signal received by the control circuit is low level, U1B outputs high level, i.e. terminal B outputs +12V, at this time, U1A outputs low level, terminal a outputs 0V, and terminal B outputs + 12V. At this time, the voltage applied to the two ends of the EL & lt + & gt and EL & lt- & gt of the electromagnetic lock coil is-12V, and the electromagnetic lock enters an unlocking rotating state. The high level output by the U1B passes through the RC circuit at the same time to drive the triode Q6, and as long as the parameters of R10 and EC2 are reasonably selected, the triode Q6 is conducted when the voltage of the capacitor EC2 is charged to be higher than the clamping voltage of the diode D2 in a reasonable time range, and the output B is pulled down at the same time. The voltage across the electromagnetic latch coil EL +, EL-is now 0V.
The comparator compares the control signal with the reference signal VREF, and if the control signal is greater than the reference signal VREF, U1A outputs high and U1B outputs low, whereas U1A outputs low and U1B outputs high.
The application also provides a charging pile electromagnetic lock control method, which comprises the following steps: the filter circuit filters the control signal and outputs the filtered control signal to the comparator; the comparator compares the control signal with a reference signal and controls the output voltage according to the comparison result; after the delay circuit delays for a preset time, the output voltage is pulled down. Wherein the control signal is at a high level or a low level.
In the present application, the embodiment of the charging pile electromagnetic lock control method is basically similar to the embodiment of the charging pile electromagnetic lock control circuit, and reference is made to the introduction of the embodiment of the charging pile electromagnetic lock control circuit for relevant places.
The application also provides a fill electric pile electromagnetic lock, fill electric pile electromagnetic lock control circuit including any kind of above-mentioned.
The application also provides a fill electric pile, fill electric pile electromagnetic lock control circuit including any kind of above-mentioned.
It is clear to a person skilled in the art that the solution according to the embodiments of the invention can be implemented by means of software and/or hardware. The "unit" and "module" in the present specification refer to software and/or hardware capable of performing a specific function independently or in cooperation with other components, wherein the hardware may be, for example, an FPGA (Field-Programmable Gate Array), an IC (Integrated Circuit), or the like.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
All functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (7)
1. The utility model provides a fill electric pile electromagnetic lock control circuit which characterized in that includes: the circuit comprises a filter circuit, a comparator, a delay circuit and a push-pull circuit; the filter circuit is connected with the comparator and used for outputting the filtered control signal to the comparator; the comparator is connected with the delay circuit and the push-pull circuit and used for comparing the control signal with the reference signal and controlling the output voltage according to the comparison result; the delay circuit is used for pulling down the output voltage after delaying for a preset time;
the delay circuit includes:
one end of a resistor R5 is connected with the output end of the first comparator, the other end of the resistor R5 is connected with the anode of a capacitor EC1 and the cathode of a diode D1, the cathode of the capacitor EC1 is connected with a signal ground, the anode of a diode D1 is connected with the base of a triode Q3, the emitter of the triode Q3 is connected with the signal ground, and the collector of the triode Q3 is connected with a push-pull circuit;
one end of a resistor R10 is connected with the output end of the second comparator, the other end of the resistor R10 is connected with the anode of a capacitor EC2 and the cathode of a diode D2, the cathode of the capacitor EC2 is connected with a signal ground, the anode of a diode D2 is connected with the base of a triode Q6, the emitter of the triode Q6 is connected with the signal ground, and the collector of the triode Q6 is connected with a push-pull circuit.
2. The charging pile electromagnetic lock control circuit of claim 1, wherein the control signal is high level or low level.
3. The charging post electromagnetic lock control circuit of claim 2, wherein the filter circuit comprises: one end of the resistor R2 is a control signal input end, the other end of the resistor R2 is connected with the non-inverting input end of the first comparator, one end of the resistor R4 is a reference signal input end, and the other end of the resistor R4 is connected with the inverting input end of the first comparator; one end of the resistor R9 is a control signal input end, the other end of the resistor R9 is connected with the inverting input end of the second comparator, one end of the resistor R7 is a reference signal input end, and the other end of the resistor R7 is connected with the same-direction input end of the second comparator.
4. The charging pile electromagnetic lock control circuit according to any one of claims 1-3, wherein the push-pull circuit comprises:
the collector of the triode Q1 is connected with 12V voltage, the base of the triode Q1 is connected with the collector of the triode Q3 and the base of the triode Q2, the collector of the triode Q2 is connected with signal ground, and the emitter of the triode Q2 is connected with the emitter of the triode Q1 and the output end A;
the collector of the triode Q4 is connected with 12V voltage, the base of the triode Q4 is connected with the collector of the triode Q6 and the base of the triode Q5, the collector of the triode Q5 is connected with signal ground, and the emitter of the triode Q4 is connected with the emitter of the triode Q5 and the output end B.
5. The charging pile electromagnetic lock control circuit according to any one of claims 1 to 3, further comprising: one end of the resistor R3 is connected with the collector of the triode Q3 and the output end of the first comparator.
6. The charging pile electromagnetic lock control circuit according to any one of claims 1 to 3, further comprising: one end of the resistor R8 is connected with the collector of the triode Q6 and the output end of the second comparator.
7. The charging pile electromagnetic lock control circuit according to any one of claims 1 to 3, further comprising:
one end of the resistor R1 is connected with 12V voltage, and the other end of the resistor R1 is connected with the output end of the first comparator; one end of the resistor R6 is connected with 12V voltage, and the other end of the resistor R6 is connected with the output end of the second comparator.
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| CN102155120A (en) * | 2011-02-14 | 2011-08-17 | 深圳桑菲消费通信有限公司 | Door lock control system based on NFC and method thereof |
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