Self-locking control circuit, device and method

Abstract

The present invention belongs to the field of focusing technology, and discloses a self-locking control circuit, device and method. The self-locking control circuit includes: an unlocking module, a self-locking module and a charge-discharge control module; the charge-discharge control module is used to access a driving signal and output a charging signal or a discharging signal to the self-locking module according to the driving signal; the unlocking module is used to access an unlocking signal and output a reset signal to the self-locking module according to the unlocking signal; the self-locking module is used to output an unlocking control signal to an execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure, and output a locking control signal to the execution structure according to the discharge signal to push the locking structure, thereby completing self-locking. By using a small solenoid valve to drive the locking structure, self-locking and unlocking are completed, the lens self-locking process is freed from dependence on electric drive, and flexible switching between self-locking and unlocking states is achieved.

Description

Technical Field

[0001] The present invention relates to the field of focusing technology, and in particular to a self-locking control circuit, device and method. Background Art

[0002] The current group locking method uses a stepper motor or a DC motor to control the locking structure to work, which requires intermediate transmission mechanisms such as screws and gears, and requires electric drive for both opening and closing, which cannot meet the requirement of locking when the power is off.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a self-locking control circuit, device and method, aiming to solve the technical problem in the prior art that the locking structure relies on electric drive and cannot be powered off, that is, self-locking.

[0005] To achieve the above-mentioned object, the present invention provides a self-locking control circuit, which comprises: an unlocking module, a self-locking module, and a charge-discharge control module connected in sequence, wherein the self-locking module is electrically coupled to an execution structure, and the execution structure is equipped with a locking structure;

[0006] The charge and discharge control module is used to receive a drive signal and output a charge signal or a discharge signal to the self-locking module according to the drive signal;

[0007] The unlocking module is configured to receive an unlocking signal and output a reset signal to the self-locking module according to the unlocking signal;

[0008] The self-locking module is configured to output an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure;

[0009] The self-locking module is further configured to output a locking control signal to the execution structure according to the discharge signal, so as to push the locking structure, thereby completing self-locking.

[0010] Optionally, the self-locking module includes: a first resistor, a first transistor, a first capacitor and a solenoid valve coil; wherein the base of the first transistor is connected to the charge and discharge control module, the emitter of the first transistor is connected to the charge and discharge control module, and the collector of the first transistor is grounded;

[0011] One end of the solenoid valve coil is connected to the emitter of the first transistor, the other end of the solenoid valve coil is connected to one end of the first capacitor, and the other end of the first capacitor is grounded;

[0012] The first capacitor is configured to be charged according to the charging signal and discharged according to the discharging signal;

[0013] The solenoid valve coil is used to output the unlocking control signal according to the charging signal and the reset signal, thereby unlocking the locking structure;

[0014] The solenoid valve coil is further configured to output the locking control signal according to the discharge signal, thereby pushing the locking structure to achieve self-locking.

[0015] Optionally, the charge and discharge control module includes a charge and discharge control unit and a first bypass unit; wherein one end of the charge and discharge control unit is connected to the first bypass unit, and the other end of the charge and discharge control unit is connected to the self-locking module;

[0016] The charge and discharge control unit is configured to output a charge signal to the self-locking module when the drive signal is at a high level, and output a discharge signal to the self-locking module when the drive signal is at a low level or the reference voltage is disconnected;

[0017] The first bypass unit is used to filter the charge and discharge control unit.

[0018] Optionally, the charge and discharge control unit includes a second resistor, a third resistor, a second transistor and a first diode; wherein,

[0019] The base of the second transistor is connected to the drive signal output terminal, the collector of the second transistor is connected to the reference voltage, the emitter of the second transistor is connected to the first end of the second resistor, the second end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is connected to the anode of the first diode, and the cathode of the first diode is connected to the solenoid valve coil;

[0020] The base and emitter of the second transistor are also connected to the first bypass unit.

[0021] Optionally, the first bypass unit includes a second capacitor, a third capacitor and a fourth resistor; wherein, one end of the fourth resistor is connected to the collector of the second transistor, the second end of the fourth resistor is grounded, one end of the second capacitor is connected to the collector of the second transistor, the second end of the second capacitor is grounded, the first end of the third capacitor is connected to the emitter of the second transistor, and the other end of the third capacitor is grounded.

[0022] Optionally, the unlocking module includes an unlocking unit and a second bypass unit; wherein one end of the unlocking unit is connected to the second bypass unit, and the other end of the unlocking unit is connected to the self-locking module;

[0023] The unlocking unit is configured to output the reset signal to the self-locking module when the unlocking signal is at a high level;

[0024] The unlocking unit is further configured to output a standby signal to the self-locking module when the unlocking signal is at a low level, thereby putting the self-locking module into standby mode;

[0025] The second bypass unit is configured to filter the unlocking unit.

[0026] Optionally, the unlocking unit includes a fifth resistor and a third transistor; wherein a first end of the fifth resistor is connected to the unlocking signal output end, a second end of the fifth resistor is connected to the base of the third transistor, and a second end of the fifth resistor is further connected to the second bypass unit;

[0027] The collector of the third transistor is connected to the first capacitor, and the emitter of the third transistor is grounded.

[0028] Optionally, the second bypass unit includes: a fourth capacitor and a sixth resistor; wherein, one end of the fourth capacitor is connected to the second end of the fourth resistor, the other end of the fourth capacitor is grounded, one end of the sixth resistor is connected to the second end of the fourth resistor, and the other end of the sixth resistor is grounded.

[0029] In addition, to achieve the above-mentioned purpose, the present invention also provides a self-locking control device, which includes the self-locking control circuit as described above.

[0030] In addition, to achieve the above-mentioned object, the present invention further proposes a self-locking control method, which is applied to the self-locking control circuit described above, wherein the self-locking control circuit comprises: an unlocking module, a self-locking module, and a charge-discharge control module connected in sequence, wherein the self-locking module is electrically coupled to an execution structure, and the execution structure is equipped with a locking structure;

[0031] The self-locking control method comprises:

[0032] The charge and discharge control module receives a driving signal and outputs a charging signal or a discharging signal to the self-locking module according to the driving signal;

[0033] The unlocking module receives an unlocking signal and outputs a reset signal to the self-locking module according to the unlocking signal;

[0034] The self-locking module outputs an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure;

[0035] The self-locking module outputs a locking control signal to the execution structure according to the discharge signal to push the locking structure, thereby completing self-locking.

[0036] The present invention provides a self-locking control circuit comprising: an unlocking module, a self-locking module, and a charge-discharge control module connected in sequence. The self-locking module is electrically coupled to an execution structure equipped with a locking structure. The charge-discharge control module is configured to receive a drive signal and output a charging signal or a discharging signal to the self-locking module based on the drive signal. The unlocking module is configured to receive an unlocking signal and output a reset signal to the self-locking module based on the unlocking signal. The self-locking module is configured to output an unlocking control signal to the execution structure based on the charging signal and the reset signal, thereby unlocking the locking structure. The self-locking module is further configured to output a locking control signal to the execution structure based on the discharge signal, thereby pushing the locking structure to achieve self-locking. By utilizing a small solenoid valve to drive the locking structure to achieve self-locking and unlocking, the lens self-locking process eliminates its reliance on electrical drive and achieves flexible switching between self-locking and unlocking states. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0038] Figure 1 This is a functional module diagram of an embodiment of a self-locking control circuit of the present invention;

[0039] Figure 2 A schematic diagram of a circuit module of an embodiment of a self-locking control circuit of the present invention;

[0040] Figure 3 Schematic diagram of the flow of the first embodiment of the self-locking control method of the present invention.

[0041] Description of Figure Numbers:

[0042] Label name Label name 100 Charge and discharge control module GND Grounding 101 Charge and discharge control unit DRIVER Drive signal output terminal 102 First bypass unit UNLOCK Unlock signal output 200 Unlock Module R1~R6 The first to sixth resistors 300 Self-locking module C1~C4 The first to fourth capacitors 201 Unlock unit Q1~Q3 The first to third transistors 202 Second bypass unit D1 First diode VCC Reference voltage L1 Solenoid valve coil

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0046] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] refer to Figure 1 , Figure 1 This is a functional module diagram of an embodiment of a self-locking control circuit of the present invention;

[0049] The self-locking control circuit includes: an unlocking module 200, a self-locking module 300 and a charge-discharge control module 100 connected in sequence, the self-locking module 300 is electrically coupled to an execution structure, and the execution structure is equipped with a locking structure;

[0050] The charge and discharge control module 100 is configured to receive a driving signal and output a charging signal or a discharging signal to the self-locking module 300 according to the driving signal.

[0051] It should be noted that the charge and discharge control module 100 includes at least a switching element, one end of which is used to access a control signal, and is turned on when the control signal is at a high level, and is turned off when the control signal is at a low level, thereby outputting a charging signal or a discharging signal to subsequent circuits.

[0052] The unlocking module 200 is configured to receive an unlocking signal and output a reset signal to the self-locking module 300 according to the unlocking signal.

[0053] It should be noted that the unlocking module 200 at least includes a switch element, which is used to receive an unlocking signal and is turned on when the unlocking signal is at a high level, thereby outputting a reset signal to subsequent circuits.

[0054] The self-locking module 300 is configured to output an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure;

[0055] The self-locking module 300 is further configured to output a locking control signal to the execution structure according to the discharge signal, so as to push the locking structure to achieve self-locking.

[0056] It should be noted that the self-locking module 300 at least includes a passive device that can store electricity. The passive device stores the charge when receiving a charging signal and releases the charge when receiving a discharging signal.

[0057] It can be understood that when the solenoid valve coil is energized, the execution structure can move. The unlocking control signal is a current signal in one direction in the solenoid valve coil, and the locking control signal is a current signal in the opposite direction of the unlocking control signal. When the solenoid valve coil receives the unlocking control signal, the execution structure moves in one direction, and when the solenoid valve coil receives the locking control signal, the execution structure moves in the opposite direction.

[0058] In this embodiment, the execution structure is used to drive the action of the locking structure. The locking structure can be a mechanical structure for limiting the lens. The lens is driven by a voice coil motor, such as a screw rod or a transmission mechanism. When the solenoid valve coil receives an unlocking control signal, the execution structure moves the screw rod or transmission mechanism to a direction that enables the lens to move normally. This process is called unlocking the locking structure; when the solenoid valve coil receives a locking control signal, the controlled end of the solenoid valve pushes the relevant screw rod or transmission mechanism to a position that can limit the lens, such as pushing the screw rod or transmission mechanism into a slot, thereby preventing the lens from moving. This process is called completing self-locking.

[0059] This embodiment proposes a self-locking control circuit, comprising: an unlocking module 200, a self-locking module 300, and a charge-discharge control module 100, connected in sequence. The self-locking module 300 is electrically coupled to an actuator structure equipped with a locking structure. The charge-discharge control module 100 is configured to receive a drive signal and output a charging signal or a discharging signal to the self-locking module 300 based on the drive signal. The unlocking module 200 is configured to receive an unlocking signal and output a reset signal to the self-locking module 300 based on the unlocking signal. The self-locking module 300 is configured to output an unlocking control signal to the actuator structure based on the charging signal and the reset signal, thereby unlocking the locking structure. The self-locking module 300 is further configured to output a locking control signal to the actuator structure based on the discharge signal, thereby pushing the locking structure to achieve self-locking. This circuit utilizes a small solenoid valve to drive the locking structure to achieve self-locking and unlocking, eliminating the lens self-locking process's reliance on electrical drive and enabling flexible switching between self-locking and unlocking states.

[0060] Further, refer to Figure 2 , Figure 2 Schematic diagram of the circuit structure of an embodiment of the self-locking control circuit of the present invention;

[0061] The self-locking module 300 includes: a first resistor R1, a first transistor Q1, a first capacitor C1 and a solenoid valve coil L1; wherein the base of the first transistor Q1 is connected to the charge and discharge control module 100, the emitter of the first transistor Q1 is connected to the charge and discharge control module 100, and the collector of the first transistor Q1 is grounded GND;

[0062] One end of the solenoid valve coil L1 is connected to the emitter of the first transistor Q1 , the other end of the solenoid valve coil L1 is connected to one end of the first capacitor C1 , and the other end of the first capacitor C1 is grounded GND.

[0063] The first capacitor C1 is configured to be charged according to the charging signal and to be discharged according to the discharging signal.

[0064] The solenoid valve coil L1 is used to output the unlocking control signal according to the charging signal and the reset signal, thereby unlocking the locking structure.

[0065] It should be noted that when the first transistor Q1 receives the charging signal, the emitter voltage is greater than the base voltage, and the voltage difference meets the conduction condition, the first transistor Q1 is turned on, and before the solenoid valve coil L1 receives the driving signal transmitted by the driving signal, the first capacitor C1 is charged. When the solenoid valve coil L1 receives the driving signal, a forward current is generated in the solenoid valve coil L1, so that the execution structure drives the lead screw or the transmission structure to move in the direction of no limit, unlocking the locking structure.

[0066] It can be understood that the forward current is the unlocking control signal as described above. The forward current causes the execution structure to move the screw rod or the transmission mechanism to a direction that enables the lens to move normally, thereby completing the unlocking and locking structure.

[0067] The solenoid valve coil L1 is further configured to output the locking control signal according to the discharge signal, thereby pushing the locking structure to achieve self-locking.

[0068] It should be noted that when the first transistor Q1 receives the discharge signal, the emitter voltage is less than the base voltage, and the first transistor Q1 is turned off. At this time, the first capacitor C1 discharges, thereby generating a reverse current in the solenoid valve coil L1, and the execution structure drives the relevant lead screw and transmission structure to move in the direction of limiting, thereby completing self-locking.

[0069] It can be understood that the reverse current is the locking control signal as described above, and the forward current causes the execution structure to move the screw rod or transmission mechanism to a direction that can limit the lens, thereby pushing the screw rod or transmission mechanism into the slot to complete self-locking.

[0070] Further, continue to refer to Figure 2 ;

[0071] The charge and discharge control module 100 includes a charge and discharge control unit 101 and a first bypass unit 102; wherein one end of the charge and discharge control unit 101 is connected to the first bypass unit 102, and the other end of the charge and discharge control unit 101 is connected to the self-locking module 300;

[0072] The charge and discharge control unit 101 is configured to output a charge signal to the self-locking module 300 when the drive signal is at a high level, and output a discharge signal to the self-locking module 300 when the drive signal is at a low level or the reference voltage is disconnected.

[0073] It should be noted that the charge and discharge control module 100 includes at least a switching element, one end of which is used to receive a drive signal, and the other end is connected to a subsequent circuit. When the drive signal is at a high level, the switching element is turned on and outputs a charging signal to the self-locking module 300, and the charging signal is a voltage signal; when the drive signal is at a low level, the switching element is turned off and outputs a discharge signal to the self-locking module 300, and the discharge signal is a voltage signal with a magnitude of 0V.

[0074] The first bypass unit 102 is used to filter the charge and discharge control unit 101 .

[0075] It can be understood that the first bypass unit 102 can eliminate interference signals in the circuit network.

[0076] Further, continue to refer to Figure 2 ;

[0077] The charge and discharge control unit 101 includes a second resistor R2, a third resistor R3, a second transistor Q2 and a first diode D1; wherein,

[0078] The base of the second transistor Q2 is connected to the drive signal output terminal DRIVER, the collector of the second transistor Q2 is connected to the reference voltage, the emitter of the second transistor Q2 is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the anode of the first diode D1, and the cathode of the first diode D1 is connected to the solenoid valve coil L1.

[0079] It should be noted that the drive signal output terminal DRIVER can be an output pin of a microprocessor, which can output the level signal generated by the microprocessor to the base of the second transistor Q2, so that the second transistor Q2 is turned on or off, and outputs a charging signal or a discharging signal to the self-locking module 300.

[0080] The base and emitter of the second transistor Q2 are also connected to the first bypass unit 102 .

[0081] This embodiment uses the above circuit to achieve locking upon power failure, thereby improving the ability to cope with abnormal power failures during the assembly process.

[0082] Further, continue to refer to Figure 2 ;

[0083] The first bypass unit 102 includes a second capacitor C2, a third capacitor C3 and a fourth resistor R4; wherein, one end of the fourth resistor R4 is connected to the collector of the second transistor Q2, and a second end of the fourth resistor R4 is grounded GND, one end of the second capacitor C2 is connected to the collector of the second transistor Q2, and a second end of the second capacitor C2 is grounded GND, a first end of the third capacitor C3 is connected to the emitter of the second transistor Q2, and the other end of the third capacitor C3 is grounded GND.

[0084] Further, continue to refer to Figure 2 ;

[0085] The unlocking module 200 includes an unlocking unit 201 and a second bypass unit 202; wherein one end of the unlocking unit 201 is connected to the second bypass unit 202, and the other end of the unlocking unit 201 is connected to the self-locking module 300;

[0086] The unlocking unit 201 is configured to output the reset signal to the self-locking module 300 when the unlocking signal is at a high level.

[0087] The unlocking unit 201 is further configured to output a standby signal to the self-locking module 300 when the unlocking signal is at a low level, thereby putting the self-locking module 300 into standby mode.

[0088] It should be noted that the unlocking unit 201 includes at least a switching element, one end of which is used to receive an unlocking signal, and the other end is connected to the subsequent circuit. When the unlocking signal is at a high level, the switching element is turned on and a reset signal is output to the self-locking module 300. The reset signal is a voltage signal; when the unlocking signal is at a low level, the switching element is turned off and a standby signal is output to the self-locking module 300. The standby signal is a voltage signal with a magnitude of 0V.

[0089] In this embodiment, when the self-locking module 300 receives the standby signal, it only reduces the current passing through the solenoid valve coil L1, and does not cause the execution structure to move. The screw rod or transmission mechanism serving as the locking structure is still in the self-locking related slot. This process is standby, and the static working current at this time is an ultra-low current of the microampere level.

[0090] The second bypass unit 202 is configured to filter the unlocking unit 201 .

[0091] Further, continue to refer to Figure 2 ;

[0092] The unlocking unit 201 includes a fifth resistor R5 and a third transistor Q3; wherein a first end of the fifth resistor R5 is connected to the unlocking signal output terminal UNLOCK, a second end of the fifth resistor R5 is connected to the base of the third transistor Q3, and a second end of the fifth resistor R5 is further connected to the second bypass unit 202;

[0093] It should be noted that the unlock signal output terminal UNLOCK can be an output pin of a microprocessor, which can output the level signal generated by the microprocessor to the base of the second transistor Q2, so that the second transistor Q2 is turned on and outputs a reset signal or a standby signal to the self-locking module 300.

[0094] The collector of the third transistor Q3 is connected to the first capacitor C1 , and the emitter of the third transistor Q3 is grounded GND.

[0095] Further, continue to refer to Figure 2 ;

[0096] The second bypass unit 202 includes: a fourth capacitor C4 and a sixth resistor R6; wherein, one end of the fourth capacitor C4 is connected to the second end of the fourth resistor R4, and the other end of the fourth capacitor C4 is grounded GND; one end of the sixth resistor R6 is connected to the second end of the fourth resistor R4, and the other end of the sixth resistor R6 is grounded GND.

[0097] Through the above circuit, this embodiment achieves ultra-low current standby without affecting the locking structure by pulling down the unlocking signal when the locking structure is unlocked.

[0098] In addition, to achieve the above-mentioned purpose, the present invention also provides a self-locking control device, which includes the self-locking control circuit as described above.

[0099] Since the present self-locking control device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here.

[0100] In addition, to achieve the above-mentioned object, the present invention further proposes a self-locking control method, which is applied to the self-locking control circuit as described above, wherein the self-locking control circuit comprises: an unlocking module, a self-locking module, and a charge-discharge control module connected in sequence, wherein the self-locking module is electrically coupled to an execution structure, and the execution structure is equipped with a locking structure;

[0101] The self-locking control method comprises:

[0102] Step S10: The charge and discharge control module receives a driving signal and outputs a charging signal or a discharging signal to the self-locking module according to the driving signal.

[0103] It should be noted that the charge and discharge control module includes at least a switching element, one end of which is used to access the control signal, turn on when the control signal is at a high level, and turn off when the control signal is at a low level, thereby outputting a charging signal or a discharging signal to the subsequent circuit.

[0104] Step S20: the unlocking module receives an unlocking signal and outputs a reset signal to the self-locking module according to the unlocking signal.

[0105] It should be noted that the unlocking module at least includes a switch element, which is used to receive an unlocking signal and is turned on when the unlocking signal is at a high level, thereby outputting a reset signal to subsequent circuits.

[0106] Step S30: the self-locking module outputs an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure.

[0107] Step S40: the self-locking module outputs a locking control signal to the execution structure according to the discharge signal to push the locking structure, thereby completing self-locking.

[0108] It can be understood that when the solenoid valve coil is energized, the execution structure can move. The unlocking control signal is a current signal in one direction in the solenoid valve coil, and the locking control signal is a current signal in the opposite direction of the unlocking control signal. When the solenoid valve coil receives the unlocking control signal, the execution structure moves in one direction, and when the solenoid valve coil receives the locking control signal, the execution structure moves in the opposite direction.

[0109] In this embodiment, the execution structure is used to drive the action of the locking structure. The locking structure can be a mechanical structure for limiting the lens. The lens is driven by a voice coil motor, such as a screw rod or a transmission mechanism. When the solenoid valve coil receives an unlocking control signal, the execution structure moves the screw rod or transmission mechanism to a direction that enables the lens to move normally. This process is called unlocking the locking structure; when the solenoid valve coil receives a locking control signal, the controlled end of the solenoid valve pushes the relevant screw rod or transmission mechanism to a position that can limit the lens, such as pushing the screw rod or transmission mechanism into a slot, thereby preventing the lens from moving. This process is called completing self-locking.

[0110] Since the present self-locking control method adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here.

[0111] It should be understood that the above is only an example and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any limitation on this.

[0112] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of it according to actual needs to achieve the purpose of the embodiment scheme, and no limitation is made here.

[0113] In addition, for technical details not fully described in this embodiment, reference can be made to the self-locking control circuit provided in any embodiment of the present invention, and will not be repeated here.

[0114] In addition, it should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0115] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0116] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-locking control circuit, characterized in that: The self-locking control circuit includes: an unlocking module, a self-locking module and a charge-discharge control module connected in sequence, the self-locking module is electrically coupled to an execution structure, and the execution structure is equipped with a locking structure; The charge and discharge control module is used to receive a drive signal and output a charge signal or a discharge signal to the self-locking module according to the drive signal; The unlocking module is used to receive an unlocking signal and output a reset signal to the self-locking module according to the unlocking signal; The self-locking module is configured to output an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure; The self-locking module is further configured to output a locking control signal to the execution structure according to the discharge signal, so as to push the locking structure to achieve self-locking; The unlocking module includes an unlocking unit and a second bypass unit; wherein one end of the unlocking unit is connected to the second bypass unit, and the other end of the unlocking unit is connected to the self-locking module; The unlocking unit is configured to output the reset signal to the self-locking module when the unlocking signal is at a high level; The unlocking unit is further configured to output a standby signal to the self-locking module when the unlocking signal is at a low level, thereby putting the self-locking module into standby mode; The second bypass unit is configured to filter the unlocking unit; The self-locking module includes a solenoid valve, and the solenoid valve drives the locking structure to complete self-locking.

2. The self-locking control circuit according to claim 1, wherein: The self-locking module includes: a first resistor, a first transistor, a first capacitor and a solenoid valve coil; wherein the base of the first transistor is connected to the charge and discharge control module, the emitter of the first transistor is connected to the charge and discharge control module, and the collector of the first transistor is grounded; One end of the solenoid valve coil is connected to the emitter of the first transistor, the other end of the solenoid valve coil is connected to one end of the first capacitor, and the other end of the first capacitor is grounded; The first capacitor is configured to be charged according to the charging signal and discharged according to the discharging signal; The solenoid valve coil is used to output the unlocking control signal according to the charging signal and the reset signal, thereby unlocking the locking structure; The solenoid valve coil is further configured to output the locking control signal according to the discharge signal, thereby pushing the locking structure to achieve self-locking.

3. The self-locking control circuit according to claim 2, wherein: The charge and discharge control module includes a charge and discharge control unit and a first bypass unit; wherein one end of the charge and discharge control unit is connected to the first bypass unit, and the other end of the charge and discharge control unit is connected to the self-locking module; The charge and discharge control unit is configured to output a charge signal to the self-locking module when the drive signal is at a high level, and output a discharge signal to the self-locking module when the drive signal is at a low level or the reference voltage is disconnected; The first bypass unit is used to filter the charge and discharge control unit.

4. The self-locking control circuit according to claim 3, wherein: The charge and discharge control unit includes a second resistor, a third resistor, a second transistor and a first diode; wherein, The base of the second transistor is connected to the drive signal output terminal, the collector of the second transistor is connected to the reference voltage, the emitter of the second transistor is connected to the first end of the second resistor, the second end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is connected to the anode of the first diode, and the cathode of the first diode is connected to the solenoid valve coil; The base and emitter of the second transistor are also connected to the first bypass unit.

5. The self-locking control circuit according to claim 4, characterized in that: The first bypass unit includes a second capacitor, a third capacitor and a fourth resistor; wherein, one end of the fourth resistor is connected to the collector of the second transistor, the second end of the fourth resistor is grounded, one end of the second capacitor is connected to the collector of the second transistor, the second end of the second capacitor is grounded, the first end of the third capacitor is connected to the emitter of the second transistor, and the other end of the third capacitor is grounded.

6. The self-locking control circuit according to claim 1, wherein: The unlocking unit includes a fifth resistor and a third transistor; wherein a first end of the fifth resistor is connected to the output end of the unlocking signal, a second end of the fifth resistor is connected to the base of the third transistor, and a second end of the fifth resistor is further connected to the second bypass unit; The collector of the third transistor is connected to the first capacitor, and the emitter of the third transistor is grounded.

7. The self-locking control circuit according to claim 1, wherein: The second bypass unit includes: a fourth capacitor and a sixth resistor; wherein, one end of the fourth capacitor is connected to the second end of the fourth resistor, and the other end of the fourth capacitor is grounded; one end of the sixth resistor is connected to the second end of the fourth resistor, and the other end of the sixth resistor is grounded.

8. A self-locking control device, characterized in that: The device comprises: the self-locking control circuit according to any one of claims 1 to 7.

9. A self-locking control method, characterized in that: The method is applied to the self-locking control circuit according to any one of claims 1 to 7, wherein the self-locking control circuit comprises: an unlocking module, a self-locking module, and a charge-discharge control module connected in sequence, the self-locking module being electrically coupled to an execution structure, and the execution structure being equipped with a locking structure; The self-locking control method comprises: The charge and discharge control module receives a driving signal and outputs a charging signal or a discharging signal to the self-locking module according to the driving signal; The unlocking module receives an unlocking signal and outputs a reset signal to the self-locking module according to the unlocking signal; The self-locking module outputs an unlocking control signal to the execution structure according to the charging signal and the reset signal, thereby unlocking the locking structure; The self-locking module outputs a locking control signal to the execution structure according to the discharge signal to push the locking structure, thereby completing self-locking.

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