CN-117789341-B - Single-wire communication control circuit, control method and single-wire communication control system of intelligent lock

CN117789341BCN 117789341 BCN117789341 BCN 117789341BCN-117789341-B

Abstract

The application relates to an intelligent lock single-wire communication control circuit which comprises a key end power supply conversion module, a key end signal sending module, a lock body end voltage conversion module, a lock body end signal conversion output module and a key end signal receiving module, wherein the key end signal sending module is connected with the key end power supply conversion module and used for obtaining and adjusting a first signal analog voltage of data to be sent to obtain a first interface voltage, the lock body end voltage conversion module is connected with a communication interface, the lock body end signal conversion output module is connected with the lock body end voltage conversion module and used for analyzing the first interface voltage to obtain data to be sent to obtain a second signal analog voltage of the data to be returned to obtain a second interface voltage, and the key end signal receiving module is used for obtaining and adjusting a calibration signal analog voltage to obtain a third output voltage. The circuit can realize bidirectional communication between the key end and the lock body end while ensuring the electricity utilization of the circuit through a single wire, and has high practicability and stability.

Inventors

XU YI
WAN ZHENZHEN
ZHANG YAOWEN
Lu Binjun

Assignees

江苏航天大为科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20231229

Claims (10)

1. An intelligent lock single wire communication control circuit, the circuit comprising: The key end power supply conversion module is used for adjusting the voltage of an input power supply to obtain a first reference voltage; The key end signal transmitting module is connected with the key end power supply conversion module and is used for acquiring a first signal analog voltage corresponding to data to be transmitted of a key end, adjusting the first signal analog voltage to obtain a first output voltage corresponding to the data to be transmitted, and outputting the first output voltage through a shared communication interface to obtain a first interface voltage; the lock body end voltage conversion module is connected with the communication interface and is used for adjusting the interface voltage at the communication interface to obtain a second reference voltage; The lock body end signal conversion output module is connected with the lock body end voltage conversion module and the communication interface, and is used for receiving and analyzing the first interface voltage to obtain the data to be sent, acquiring a second signal analog voltage of the data to be returned of the lock body end, adjusting the second signal analog voltage to obtain a second output voltage corresponding to the data to be returned, and outputting the second output voltage through the communication interface to obtain a second interface voltage; The key end signal receiving module is connected with the key end power supply conversion module and the communication interface, and is used for acquiring a calibration signal analog voltage after all data to be transmitted, which are required to be transmitted to the lock body end which is matched, are transmitted, adjusting the calibration signal analog voltage to obtain a corresponding third output voltage, and analyzing the calibration signal analog voltage when the third output voltage is equal to the second interface voltage to obtain the data to be transmitted back.
2. The circuit of claim 1, wherein the key-side signaling module comprises: The enabling submodule is used for acquiring the input power supply and outputting a control signal; The control module is used for receiving the control signal, controlling the connection state with the communication interface according to the control signal, and outputting a starting signal when the key end signal transmitting module is controlled to be connected with the communication interface according to the control signal; The first voltage regulating sub-module is connected with the voltage regulating sub-module, and is used for receiving the first reference voltage and the first signal analog voltage, and when the first voltage regulating sub-module receives the starting signal, the first voltage regulating sub-module regulates the superposition voltage of the first reference voltage and the first signal analog voltage to obtain the first output voltage, and outputs the first output voltage through the communication interface to obtain the first interface voltage.
3. The circuit of claim 2, wherein the key-side signaling module further comprises: The outlet filtering module is connected with the first voltage regulating sub-module, and is used for obtaining the first output voltage, filtering the first output voltage to obtain a filtered first output voltage, and outputting the filtered first output voltage through the communication interface to obtain the first interface voltage.
4. The circuit of claim 3, wherein the key side signal transmission module further comprises: The first interface protection module is connected with the outlet filtering module and is used for transmitting the filtered first output voltage and stabilizing the filtered first output voltage so as to protect the communication interface.
5. The circuit of claim 2, wherein the key-side signaling module further comprises: The input power supply comprises an input filtering submodule, an enabling submodule and an input filtering submodule, wherein the input filtering submodule is connected with the enabling submodule and used for filtering the input power supply to obtain a filtered input power supply and transmitting the filtered input power supply to the enabling submodule.
6. The circuit of claim 1, wherein the lock-side signal conversion output module comprises: the second voltage regulating sub-module is connected with the lock body end voltage conversion module and is used for acquiring the second signal analog voltage; the first operational amplifier processing sub-module is connected with the second voltage regulating sub-module, and is used for performing operational amplifier processing on the second reference voltage and the superimposed voltage of the second signal analog voltage to obtain the second output voltage, and outputting the second output voltage through the communication interface to obtain a second interface voltage; The first voltage monitoring submodule is connected with the operational amplifier processing submodule and the communication interface, and is used for receiving and analyzing the first interface voltage to obtain the data to be sent.
7. The circuit of claim 6, wherein the lock-side signal conversion output module further comprises: the second interface protection module is connected with the first voltage monitoring sub-module and the first operational amplifier processing sub-module, and is used for transmitting the second interface voltage and the first interface voltage and performing voltage stabilization processing on the second interface voltage so as to protect the communication interface.
8. The circuit of claim 1, wherein the key-side signal receiving module comprises: The third voltage regulating sub-module is connected with the key end power supply conversion module and is used for acquiring the analog voltage of the calibration signal; the second operational amplifier processing sub-module is connected with the third voltage regulating sub-module and the communication interface, and is used for performing operational amplifier processing on the superimposed voltage of the first reference voltage and the calibration signal analog voltage to obtain the third output voltage, and is also used for obtaining the second interface voltage; the second voltage monitoring sub-module is connected with the second operational amplifier processing sub-module, and is used for acquiring the third output voltage, and analyzing the calibration signal analog voltage when the third output voltage is equal to the second interface voltage to obtain the data to be transmitted back.
9. A control method of an intelligent lock single wire communication control circuit, characterized in that the control method is applied to the intelligent lock single wire communication control circuit according to any one of claims 1 to 8, the intelligent lock single wire communication control circuit comprises a key end power supply conversion module, a key end signal transmission module, a lock body end voltage conversion module, a lock body end signal conversion output module and a key end signal receiving module, and the method comprises the following steps: The key end power supply conversion module adjusts the voltage of an input power supply to obtain a first reference voltage; The key end signal sending module obtains the first reference voltage and a first signal analog voltage corresponding to data to be sent of a key end, adjusts the first signal analog voltage to obtain a first output voltage corresponding to the data to be sent, and outputs the first output voltage through a shared communication interface to obtain a first interface voltage; The lock body end voltage conversion module acquires the interface voltage of the communication interface and adjusts the interface voltage to obtain a second reference voltage; The lock body end signal conversion output module acquires the second reference voltage and the first interface voltage, analyzes the first interface voltage to obtain the data to be sent, acquires a second signal analog voltage of the data to be returned of the lock body end, adjusts the second signal analog voltage to obtain a second output voltage corresponding to the data to be returned, and outputs the second output voltage through the communication interface to obtain a second interface voltage; the key end signal receiving module obtains the first reference voltage and the second interface voltage, obtains a calibration signal analog voltage after all data to be transmitted, which are required to be transmitted to the matched lock body end, are transmitted, adjusts the calibration signal analog voltage to obtain a corresponding third output voltage, and analyzes the calibration signal analog voltage when the third output voltage is equal to the second interface voltage to obtain the data to be transmitted back.
10. An intelligent single-wire-lock communication control system, characterized in that the system comprises a lock body and an electronic key adapted to the lock body, the system further comprises an intelligent single-wire-lock communication control circuit according to any one of claims 1 to 8, and the system is used for intelligent single-wire-lock communication control according to the circuit control method according to claim 9.

Description

Single-wire communication control circuit, control method and single-wire communication control system of intelligent lock Technical Field The application relates to the technical field of intelligent locks, in particular to an intelligent lock single-wire communication control circuit, a control method and a single-wire communication control system. Background The intelligent lockset of the common equipment cabinet body needs the electronic key to assist in carrying out authority management, the intelligent lockset uses more electricity when unlocking and keeping, and meanwhile, the intelligent lockset needs to carry out communication of control instructions, and the butting structure is as simple as possible. In the prior art, communication between an electronic key and an intelligent lockset is realized in two ways, namely, a quasi-double wire system is adopted, at least two independent interfaces or contact points are needed to be provided, and the contact points are used as a grounding wire to carry out common grounding through a shell, wherein the contact point 1 is used as a power wire to supply power, the contact point 2 is used as a single bus to carry out communication, the lockset unlocking process has rotation, the design of the double wire system needs to deal with more structural problems, the design and production difficulty of the butting interface are increased, the complexity of the structure is improved, the shaking in the rotation process is easy to cause contact virtual connection, the communication and power supply stability are reduced, the second communication is realized by adopting a digital single wire system, the shell is used as the grounding wire to carry out common grounding, the single bus uses a serial mode to carry out data transmission, and meanwhile, the power supply capacity of the power supply is limited, and the unlocking power requirement of a larger lock body is difficult to meet. Therefore, the intelligent lock single-wire communication control implementation manner of the above conventional technology is poor in practicality and stability. Disclosure of Invention In view of the foregoing, it is desirable to provide an intelligent lock single-wire communication control circuit, a control method, and a single-wire communication control system. In a first aspect, the present application provides an intelligent lock single wire communication control circuit. The circuit comprises: The key end power supply conversion module is used for adjusting the voltage of an input power supply to obtain a first reference voltage; the key end signal transmitting module is connected with the key end power supply conversion module and is used for acquiring a first signal analog voltage corresponding to data to be transmitted of a key end, adjusting the first signal analog voltage to obtain a first output voltage corresponding to the data to be transmitted, and outputting the first output voltage through a shared communication interface to obtain a first interface voltage; The lock body end voltage conversion module is connected with the communication interface and is used for adjusting the interface voltage at the communication interface to obtain a second reference voltage; The lock body end signal conversion output module is connected with the lock body end voltage conversion module and the communication interface, and is used for receiving and analyzing the first interface voltage to obtain data to be transmitted, and also used for obtaining a second signal analog voltage of the data to be returned of the lock body end, adjusting the second signal analog voltage to obtain a second output voltage corresponding to the data to be returned, and outputting the second output voltage through the communication interface to obtain the second interface voltage; the key end signal receiving module is connected with the key end power supply conversion module and the communication interface and is used for acquiring the analog voltage of the calibration signal after all data to be transmitted, which are required to be transmitted to the adaptive lock body end, are transmitted, adjusting the analog voltage of the calibration signal to obtain a corresponding third output voltage, and analyzing the analog voltage of the calibration signal when the third output voltage is equal to the second interface voltage to obtain the data to be transmitted back. In one embodiment, the key-side signaling module includes: the enabling submodule is used for acquiring an input power supply and outputting a control signal; the control module is connected with the enabling submodule, and is used for receiving the control signal, controlling the connection state with the communication interface according to the control signal, and outputting a starting signal when the key end signal transmitting module is controlled to be connected with the communication interface according to the control signal; The first voltage r