Electromagnetic lock unlocking control system, method and electromagnetic lock system including the same

Abstract

The present invention belongs to the technical field of electromagnetic locks, and specifically relates to an electromagnetic lock unlocking control system, method and an electromagnetic lock system including the system, which aims to solve the problem that the electromagnetic lock cannot be opened randomly. An embodiment of the electromagnetic lock unlocking control system includes: a door opening and closing feedback circuit, configured to detect the opening and closing state of the door on which the electromagnetic lock is installed; a control processor, configured to obtain the number of times the user's unlocking command is received and the opening and closing state is closed; an output voltage controllable power supply circuit, configured to gradually increase the output voltage as the number of times increases; an electromagnetic lock drive control circuit, connected to the voltage output side of the output voltage controllable power supply circuit, used to drive the electromagnetic lock to open. The beneficial effect of the present invention is: the output voltage is gradually increased as the number of unlocking commands increases, so as to output a stronger electromagnetic force, so as to finally drive the electromagnetic lock to open, thereby eliminating or at least reducing the probability of the electromagnetic lock randomly failing to unlock.

Description

Background Art

[0002] Electromagnetic locks (or magnetic locks) use the principle of electromagnetism. When current passes through silicon steel sheets, electromagnetic locks will generate strong suction to tightly absorb objects made of ferromagnetic materials, thereby achieving the effect of locking the door. Electromagnetic locks are widely used in production, life and other fields (such as smart express cabinets).

[0003] During use, as time goes by and the environment changes, the electromagnetic lock will experience mechanical and electrical performance degradation, resulting in the electromagnetic lock being unable to unlock randomly. Therefore, an electromagnetic lock unlocking control system, method and electromagnetic lock system including the system are needed to solve or at least alleviate the above problems. Summary of the invention

[0004] In order to solve the above-mentioned problem in the prior art, that is, the problem that the electromagnetic lock cannot be opened randomly due to the attenuation of the mechanical and electrical performance of the electromagnetic lock, the first aspect of the present invention provides an electromagnetic lock unlocking control system, comprising:

[0005] A door opening and closing feedback circuit configured to detect an opening and closing state of a door on which the electromagnetic lock is installed;

[0006] A control processor is configured to obtain the number of times an unlocking instruction is received from a user and the opening and closing state is closed;

[0007] an output voltage controllable power supply circuit, configured to gradually increase the output voltage as the number of times increases;

[0008] The electromagnetic lock drive control circuit is connected to the voltage output side of the output voltage controllable power supply circuit and is used to drive the electromagnetic lock to open.

[0009] In some preferred embodiments, the control processor is further configured to:

[0010] If the number is greater than N, N>3, stop sending the driving command to the output voltage controllable current source circuit; or,

[0011] The output voltage controllable power supply circuit is configured such that if the number is greater than N, N>3, the output voltage is 0.

[0012] In some preferred embodiments, the electromagnetic lock unlocking control system further includes an N-channel switch selection circuit, assuming that the number is m, m<N, the N-channel switch selection circuit is connected between the control processor and the output voltage controllable power supply circuit, and the N-channel switch selection circuit is configured to turn on the switch of the mth channel based on the number m so that the output voltage controllable power supply circuit is at U m is the output voltage, where U m is the value of the output voltage when the number is m.

[0013] In some preferred embodiments, the door opening and closing detection circuit includes a detection end installed between the door and a door frame on which the door is installed, so as to detect the displacement or rotation angle of the door relative to the door frame.

[0014] In some preferred embodiments, the detection end is a displacement sensor or a rotation angle sensor, wherein:

[0015] The displacement sensor is installed on the door or door frame to detect the displacement of the door relative to the door frame;

[0016] The door is rotatably mounted on the door frame, and the rotation angle sensor is mounted on the rotation axis of the door to detect the rotation angle of the door relative to the door frame.

[0017] In some preferred embodiments, the electromagnetic lock includes a lock head and a strike plate, the voltage input side of the lock head is electrically connected to the electromagnetic lock drive control circuit, the strike plate is installed on the door frame, and the strike plate is installed on the door.

[0018] In some preferred embodiments, a human-computer interaction interface is further included for receiving an unlocking instruction input by a user.

[0019] In some preferred embodiments, a display screen is further included, wherein a signal input terminal of the display screen is connected to the control processor or the door opening and closing feedback circuit signal for displaying the opening and closing status.

[0020] In some preferred embodiments, the human-computer interaction interface is displayed on the display screen.

[0021] A second aspect of the present invention provides an electromagnetic lock system, comprising:

[0022] Any of the above electromagnetic lock unlocking control systems; and

[0023] Any electromagnetic lock as above.

[0024] A third aspect of an embodiment of the present invention provides an electromagnetic lock unlocking control method, comprising the steps of:

[0025] S100, detecting the opening and closing state of the door on which the electromagnetic lock is installed;

[0026] S200, obtaining the number of times the unlocking instruction is received from the user and the opening and closing state is closed;

[0027] S300 , gradually increasing the output voltage as the number of times increases, so as to drive the solenoid valve to open.

[0028] In some preferred embodiments, in step S300, if the number is greater than N, N>3, the output voltage is stopped from being provided.

[0029] In some preferred embodiments, assuming that the number is m, m<N, in step S300, when the number is m, U m is the output voltage.

[0030] In some preferred embodiments, the number of unlocking failures is determined based on the opening and closing state (too many times can easily reduce efficiency and affect user experience),

[0031] If the number of unlocking failures is greater than 2, an unlocking failure instruction is output;

[0032] If the number of unlock failures is not greater than 2, the output voltage is adjusted based on the number of times the unlock command is received.

[0033] In some preferred embodiments, the number of unlocking failures is determined based on the opening and closing state.

[0034] If the number of unlocking failures is greater than 2, an unlocking failure instruction is output;

[0035] If the number of unlocking failures is not greater than 2, the number is obtained based on the number of unlocking failures, and the output voltage is adjusted based on the unlocking instruction and the number.

[0036] In some preferred embodiments, in step S100, if the opening and closing state is open, an unlocking success instruction is output.

[0037] In a third aspect of the present invention, a storage device is proposed, in which a plurality of programs are stored, and the programs are suitable for being loaded and executed by a processor to implement the above-mentioned text sentiment analysis method based on the combination model.

[0038] In the fourth aspect of the present invention, a processing device is proposed, including a processor and a storage device; the processor is suitable for executing various programs; the storage device is suitable for storing multiple programs; the programs are suitable for being loaded and executed by the processor to implement the above-mentioned text sentiment analysis method based on the combined model.

[0039] Beneficial effects of the present invention:

[0040] Assume that the number of conditions that are met simultaneously (the user's unlocking command is received and the door opening and closing state is closed) is the number of times, and as the number of times increases, the output voltage is gradually increased to output a stronger electromagnetic force, so as to ultimately drive the electromagnetic lock to open, thereby eliminating or at least reducing the probability of the electromagnetic lock randomly failing to unlock, thereby ultimately improving the user experience of the unlocking user; the output voltage is only increased when the current voltage cannot open the electromagnetic lock, and a higher output voltage is not output for all unlocking events, thereby ensuring a longer service life, thereby saving the repair and maintenance costs of the equipment and improving the experience of the users providing the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0042] Figure 1 It is a control block diagram of an embodiment of an electromagnetic lock unlocking control system;

[0043] Figure 2 is a flow chart of a first embodiment of an electromagnetic lock unlocking control method;

[0044] Figure 3 is a flow chart of a second embodiment of an electromagnetic lock unlocking control method;

[0045] Figure 4 is a flow chart of a third embodiment of an electromagnetic lock unlocking control method;

[0046] Figure 5 is a circuit diagram of an embodiment of an output voltage controllable power supply circuit;

[0047] Figure 6 It is a circuit diagram of an embodiment of an electromagnetic lock drive control circuit.

[0048] In the figure:

[0049] 10. Control processor; 20. N-channel switch selection circuit; 30. Output voltage controllable power supply circuit; 40. Electromagnetic lock drive control circuit; 50. Electromagnetic lock; 60. Door opening and closing feedback circuit. DETAILED DESCRIPTION

[0050] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the relevant invention are shown in the accompanying drawings.

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] A first aspect of an embodiment of the present invention provides an electromagnetic lock unlocking control system, see Figure 1 , which includes:

[0053] The door opening and closing feedback circuit 60 is configured to detect the opening and closing state of the door on which the electromagnetic lock is installed;

[0054] The control processor 10 is configured to obtain the number of times the unlocking instruction is received from the user and the opening and closing state is closed;

[0055] The output voltage controllable power supply circuit 30 is configured to gradually increase the output voltage as the number of times increases;

[0056] The electromagnetic lock driving control circuit 40 is connected to the voltage output side of the output voltage controllable power supply circuit, and is used to drive the electromagnetic lock 50 to open.

[0057] Assume that the number of conditions that are met simultaneously (the user's unlocking command is received and the door's opening and closing state is closed) is the number of times, and as the number of times increases, the output voltage is gradually increased to output a stronger electromagnetic force, so as to ultimately drive the electromagnetic lock to open, thereby eliminating or at least reducing the probability of the electromagnetic lock randomly failing to unlock.

[0058] It should be noted that the detection end of the above-mentioned door opening and closing feedback circuit is installed at the door, which is a normally closed or normally open contact. When the door is opened, it is opened or closed accordingly, thereby sending a door opening signal to the control processor. A specific form of the detection end of the door opening and closing feedback circuit is a position sensor, which is installed on the door or the door frame on which the door can be opened and closed, and is used to detect the relative displacement (linear displacement or rotation angle displacement) between the door and the door frame, and convert the displacement signal into an electrical signal, which can be transmitted to the control processor after being processed (amplified, filtered, etc.) by the door opening and closing feedback circuit. Of course, it is known to those skilled in the art that the door opening and closing feedback circuit can also be in other forms, which are not listed here one by one.

[0059] The control processor may be a single chip microcomputer or a CPU, etc., which counts the number of doors that meet the conditions (received the unlocking command from the user and the door opening and closing state is closed) and sends it to the output voltage controllable power supply circuit.

[0060] The output voltage controllable power supply circuit has a control terminal connected to the control processor signal and is configured to gradually increase the output voltage as the number of times the control processor satisfies the above conditions increases. Figure 5 A circuit structure diagram of an output voltage controllable power supply circuit is shown, and the output voltage value range is +12V to +24V. The output voltage controllable power supply circuit is a variable voltage output circuit. It is known to those skilled in the art that there are multiple circuit structures to choose from, which will not be listed one by one.

[0061] The electromagnetic lock drive control circuit is connected to the voltage output side of the output voltage controllable power supply circuit. Figure 6 A circuit structure schematic diagram of an electromagnetic lock drive control circuit is shown, which is used to drive the electromagnetic lock to open.

[0062] Another embodiment of the electromagnetic lock unlocking control system can be further configured as follows:

[0063] If the number is greater than N, N>3, stop sending the driving command to the output voltage controllable current source circuit; or,

[0064] The output voltage controllable power supply circuit is configured such that if the number is greater than N, N>3, the output voltage is 0.

[0065] Through the above arrangement, when the number of times is greater than 3, the value of the output voltage is no longer increased, so that the output voltage controllable power supply circuit can output an output voltage of three voltage values, avoiding the continuous increase of the output voltage value and increasing the difficulty of design and selection of the output voltage controllable power supply circuit. It should be noted that the increasing gradient of any two adjacent (adjacent times, such as the first and second times) output voltages in the output voltage gradually increased with the increase of the number of times can be the same or different, and the increasing gradient can also be selected accordingly according to actual needs (such as the second output voltage is 1.5 times the first output voltage). Of course, it is known to those skilled in the art that the 3 of the upper limit of the number of times can also be changed to other values ​​according to actual needs, and the above-mentioned output voltage can also adopt other increasing gradients, which are not listed here one by one.

[0066] It should be noted that in order to achieve that when the number rises to N, the output voltage controllable power supply circuit no longer outputs a higher voltage (compared to the output voltage when the number is N-1), it can be achieved in the following two ways:

[0067] Method 1: If the number is greater than N, when N>3, the control processor stops sending the driving command to the output voltage controllable current source circuit, so that the output voltage controllable current source circuit has no input signal, and of course there will be no output voltage;

[0068] Mode 2: If the number is greater than N, and N>3, a stop signal is directly sent to the output voltage controllable current source circuit without passing through the control processor, so that Of course, those skilled in the art will know that other modes can also be used, which are not listed here one by one.

[0069] In addition, the electromagnetic lock unlocking control system further includes an N-channel switch selection circuit 20, assuming that the number of times is m, m<N, the N-channel switch selection circuit is connected between the control processor and the output voltage controllable power supply circuit, and the N-channel switch selection circuit is configured to turn on the switch of the mth channel based on the number of times m so that the output voltage controllable power supply circuit is at U m is the output voltage, where U m The control processor is connected to the output voltage controllable power supply circuit through the N-channel switch selection circuit, so that the number of times m and the output voltage U corresponding to the number of times m are m One-to-one correspondence, clear and simple logic, makes the system highly reliable, simple in circuit structure and low in cost.

[0070] It should be noted that the above-mentioned unlocking instruction is the user's pickup / send request, and the receiving method of the unlocking instruction may include: the user inputs the unlocking instruction (characters sent by the server to the user's mobile phone, and the server is connected to the electromagnetic lock signal of the express cabinet) through a human-computer interaction interface such as a touch screen; an identification code (such as a QR code, bar code or other identification code) generated by the user's portable mobile terminal (such as a mobile phone) App.

[0071] It should be noted that the detection end is a displacement sensor or a rotation angle sensor, wherein:

[0072] The displacement sensor is installed on the door or door frame to detect the displacement of the door relative to the door frame. It is suitable for use in scenarios where the door is displaced relative to the door frame, such as a pull-out door.

[0073] The door is rotatably mounted on the door frame, and the rotation angle sensor is mounted on the rotation axis of the door to detect the rotation angle of the door relative to the door frame, which is suitable for use in scenarios where the door is rotated to open. This ensures that the electromagnetic lock unlocking control system has a wide range of applications.

[0074] A specific structure of an electromagnetic lock is that it includes a lock head and a strike plate, the voltage input side of the lock head is electrically connected to the electromagnetic lock drive control circuit, the strike plate is installed on the door frame, and the strike plate is installed on the door. The lock head works under the drive of voltage to absorb the strike plate.

[0075] It also includes a human-machine interaction interface for receiving unlocking instructions input by a user. It also includes a display screen, the signal input end of which is connected to the control processor or the door opening and closing feedback circuit signal, for displaying the opening and closing state. The human-machine interaction interface is displayed on the display screen. Thus, the display screen is a touch-type display screen with human-machine interaction function.

[0076] A second aspect of an embodiment of the present invention provides an electromagnetic lock system, which includes:

[0077] Any of the above electromagnetic lock unlocking control systems; and

[0078] Any electromagnetic lock as above.

[0079] Since any of the above-mentioned electromagnetic lock unlocking control systems is adopted, the electromagnetic lock system has the characteristics of any of the above-mentioned electromagnetic lock unlocking control systems, that is, it solves the same technical problems and produces the same beneficial effects, which will not be described again here.

[0080] A third aspect of the present invention provides an electromagnetic lock unlocking control method, referring to Figure 2 , which comprises the steps of:

[0081] S100, detecting the opening and closing state of the door on which the electromagnetic lock is installed;

[0082] S200, obtaining the number of times the unlocking instruction is received from the user and the opening and closing state is closed;

[0083] S300 , gradually increasing the output voltage as the number of times increases, so as to drive the solenoid valve to open.

[0084] In step S300, if the number is greater than N, N>3, the output voltage is stopped.

[0085] Assume that the number is m, m<N, in step S300, when the number is m, U m is the output voltage.

[0086] See also Figure 3 , when N>3, the number of unlocking failures is determined based on the opening and closing state,

[0087] If the number of unlocking failures is greater than 2, an unlocking failure instruction is output;

[0088] If the number of unlocking failures is not greater than 2, the output voltage is adjusted based on the number of times the unlocking command is received. Specifically, the cabinet app of the express cabinet (the cabinet app is set in the express cabinet, used to execute the above-mentioned electromagnetic lock unlocking control method), after receiving the unlocking command, determines the number of times the condition "the user's unlocking command is received and the door opening and closing state is closed" is met (such as 1, 2, 3...), and then calls the corresponding software unlocking command according to the number of times to output different unlocking voltages (i.e., the above-mentioned output voltage) respectively, the electromagnetic lock is powered on and feeds back the door opening and closing state information, collects the door opening and closing state, and thus determines whether the door is opened successfully. If it is opened successfully, the "door opening success" command is output (to the display screen set in the cabinet and connected to the control processor signal), especially the "door opening success" command can be output to the control processor, and the control processor will no longer send a working instruction to the output voltage controllable power supply circuit.

[0089] See also Figure 4 , when N>3, the number of unlocking failures is determined based on the opening and closing state,

[0090] If the number of unlocking failures is greater than 2, an unlocking failure instruction is output;

[0091] If the number of unlocking failures is not greater than 2, the number is obtained based on the number of unlocking failures, and the output voltage is adjusted based on the unlocking instruction and the number. Figure 3 The difference of the embodiment is that: the step of "judging the number of cabinet app unlocking instructions (1, 2, 3)" is missing; the software unlocking instruction does not correspond to the number of times, and the rest is the same and will not be repeated.

[0092] In step S100, if the opening and closing state is open, an unlocking success instruction is output.

[0093] It should be noted that the text sentiment analysis system based on the combination model provided in the above embodiment is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be decomposed or combined. For example, the modules in the above embodiments can be combined into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the modules or steps, and are not regarded as improper limitations of the present invention.

[0094] A storage device according to a third embodiment of the present invention stores a plurality of programs, wherein the programs are suitable for being loaded and executed by a processor to implement the above-mentioned electromagnetic lock unlocking control method.

[0095] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process and related instructions of the storage device and processing device described above can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0096] Those skilled in the art should be able to appreciate that the modules and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, computer software or a combination of the two, and the programs corresponding to the software modules and method steps can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the technical field. In order to clearly illustrate the interchangeability of electronic hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in electronic hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0097] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0098] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An electromagnetic lock unlocking control system, characterized in that: include: A door opening and closing feedback circuit configured to detect an opening and closing state of a door on which the electromagnetic lock is installed; A control processor is configured to obtain the number of times an unlocking instruction is received from a user and the opening and closing state is closed; An output voltage controllable power supply circuit is configured to gradually increase the output voltage as the number of times the unlocking command is received from the user and the opening and closing state is closed increases; An electromagnetic lock drive control circuit is connected to the voltage output side of the output voltage controllable power supply circuit and is used to drive the electromagnetic lock to open; The electromagnetic lock unlocking control system further includes an N-channel switch selection circuit. Assuming that the number of times the unlocking command received by the user and the on / off state is closed is m, m<N, the N-channel switch selection circuit is connected between the control processor and the output voltage controllable power supply circuit, and the N-channel switch selection circuit is configured to turn on the switch of the mth channel based on the number of times the unlocking command received by the user and the on / off state is closed, so that the output voltage controllable power supply circuit is at U m is the output voltage, where U m is the value of the output voltage when the unlocking command is received from the user and the opening and closing state is closed for m times; Determine the number of unlocking failures based on the opening and closing state, If the number of unlocking failures is greater than 2, an unlocking failure instruction is output; If the number of unlocking failures is not greater than 2, the number of times the unlocking command from the user is received and the opening and closing state is closed is obtained based on the number of unlocking failures, and the output voltage is adjusted based on the unlocking command and the number of times the unlocking command from the user is received and the opening and closing state is closed.

2. An electromagnetic lock system, characterized in that: include: The electromagnetic lock unlocking control system and the electromagnetic lock as claimed in claim 1.

3. An electromagnetic lock unlocking control method, characterized in that: Includes steps: S100, detecting the opening and closing state of the door on which the electromagnetic lock is installed; S200, obtaining the number of times the unlocking instruction is received from the user and the opening and closing state is closed; S300, gradually increasing the output voltage as the unlocking command from the user is received and the number of times the opening and closing state is closed increases, so as to drive the solenoid valve to open; Determine the number of unlocking failures based on the opening and closing state, If the number of unlocking failures is greater than 2, an unlocking failure instruction is output; If the number of unlocking failures is not greater than 2, the number of times the unlocking command from the user is received and the opening and closing state is closed is obtained based on the number of unlocking failures, and the output voltage is adjusted based on the unlocking command and the number of times the unlocking command from the user is received and the opening and closing state is closed.

4. The electromagnetic lock unlocking control method according to claim 3, characterized in that: Assume that the number of times the unlocking command is received and the opening and closing state is closed is m, m<N, in step S300, when the number of times the unlocking command is received and the opening and closing state is closed is m, U m is the output voltage.

5. The electromagnetic lock unlocking control method according to claim 3 or 4, characterized in that: In step S100, if the opening and closing state is open, an unlocking success instruction is output.

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