A security door lock

Abstract

The utility model discloses a safe door lock is by door lock inductor and protection door operating element composition, through one base station chip control two groups RFID antenna time division multiplexing not only realize the closing of protection door, detect the position of protection door lock tongue simultaneously, detect the protection door closing, and drive the electromagnet after lock tongue inserts accurate position, and electromagnet drives the lock catch to realize the locking of lock tongue, and through the position of electromagnet push rod of slot photoelectric switch detection inside simultaneously, realize closed loop detection to realize the high security level of locking function. Summarized above, the utility model not only can reach higher security level to the detection of protection door and lock tongue, can also save the cost effectively, avoid mutual interference.

Description

Technical Field

[0001] This utility model relates to the field of security door lock technology, and in particular to a security door lock. Background Technology

[0002] In industrial security door applications, there is a type of safety lock that uses RFID radio frequency sensing to detect the opening and closing of the security door. When the lock senses that the security door is closed, it outputs a door-closed indication signal and waits for the lock tongue to be inserted. When the lock senses that the lock tongue is inserted, it unlocks and outputs a door-locked indication signal. If the lock cannot accurately and effectively detect the position of the lock tongue, and mistakenly identifies the door as locked when the lock tongue is not fully inserted, it may cause the door to fail to lock, posing a potential risk of danger to personnel. Utility Model Content

[0003] The purpose of this invention is to provide a security door lock and a multi-channel radio frequency induction multiplexing detection method. The problem it solves is that the door lock cannot accurately and effectively detect the position of the bolt on a protective door. When the bolt is not fully inserted, it is mistakenly considered locked, which can lead to the door failing to close and potentially endangering personnel. This detection device only activates the lock when the protective door is effectively closed and the bolt is properly inserted, ensuring personnel safety.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A security door lock, comprising a door lock sensor and a protective door operating component; Door lock sensors include: The MCU logic processing unit of the lock body sensor is used to control and detect base station antenna signals, control SPDT switch switching and electromagnet operation, and monitor the status of slot photoelectric sensor. The radio frequency base station unit is used for modulating and driving the antenna and decoding the communication information coupled by the antenna. Sensor antenna S2 is used to detect the position of the lock tongue of the protective door; Sensor antenna S1 is used to detect the opening and closing status of the protective door; The operating components of the protective door include: The electromagnet inside the door lock sensor is used to drive the latch to lock the bolt; The actuator antenna T1 is installed near the lock body and interacts with the sensor antenna S1. The actuator antenna T2 is mounted on the lock tongue and interacts with the sensor antenna S2. The locking mechanism, the bolt, is inserted into the sensor lock body to lock the door.

[0005] Compared with existing technologies, this invention has the following advantages: This invention uses a single base station chip to control two sets of RFID antennas in a time-division multiplexing manner, not only to close the protective door but also to detect the position of the door's latch. Once the door is detected as closed and the latch is inserted into the correct position, an electromagnet is driven. The electromagnet then moves the latch to lock the latch. Simultaneously, an internal slotted photoelectric switch detects the position of the electromagnet's push rod, achieving closed-loop detection and thus a high level of security for the locking function. In summary, this invention not only achieves a higher level of security for both the protective door and the latch but also effectively saves costs and avoids mutual interference. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the principle of this utility model.

[0007] Figure 2 This is a schematic diagram of the door lock device of this utility model (without the lock tongue inserted).

[0008] Figure 3 This is a schematic diagram of the door lock device (insertion of the lock tongue) of this utility model.

[0009] In the diagram: 1. Lock body sensor logic processing unit MCU, 2. Radio frequency base station unit, 3. Sensor antenna S2, 4. Sensor antenna S1, 5. Operating element antenna T1, 6. Operating element antenna T2, 7. Electromagnet, 8. Operating element lock tongue. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] A security door lock, comprising a door lock sensor and a protective door operating component; Door lock sensors include: The lock body sensor logic processing unit MCU1 is used to control and detect base station antenna signals, control SPDT switch switching and electromagnet action, and monitor the status of slot photoelectric sensor. The radio frequency base station unit is used for modulating and driving the antenna and decoding the communication information coupled by the antenna. Sensor antenna S2 3 is used to detect the position of the lock tongue of the protective door; Sensor antenna S1 4 is used to detect the opening and closing status of the protective door; The operating components of the protective door include: The electromagnet 7 inside the door lock sensor is used to drive the latch to lock the bolt; The actuator antenna T15 is installed near the lock body and interacts with the sensor antenna S14; The actuator antenna T2 6 is mounted on the latch and interacts with the sensor antenna S2 3; The locking tongue 8 is inserted into the sensor lock body to lock the door.

[0012] A multi-channel radio frequency induction multiplexing detection method is disclosed. When the protective door approaches and closes, the sensor detects the door closing via sensor antenna S1 and outputs a door-closing auxiliary indication signal. When the latch of the operating component is inserted into the lock body, the sensor detects the latch insertion via sensor antenna S2, which drives the electromagnet push rod inside the sensor. The electromagnet push rod drives the latch to lock the latch. The position of the push rod is detected by an internal slotted photoelectric switch, thereby detecting the state of the electromagnet to achieve closed loop. After locking, a door-locking auxiliary signal is output synchronously. Sensor antennas S1 and S2 use a time-division multiplexing mechanism to alternately sense the door, which can effectively avoid mutual interference between the magnetic fields of the two sets of antennas and save a base station chip, thus saving costs.

[0013] The door lock sensor consists of a radio frequency antenna unit, an electromagnet, a slotted photoelectric sensor, etc. The radio frequency antenna unit is controlled by a base station chip in a time-division multiplexing manner to control two sets of antennas to alternately and cyclically sense. Sensor antenna S1 and sensor antenna S2 are switched via SPDT switches and controlled by the MCU. The sensor first detects the position of the protective door through the sensor antenna S1. After the protective door is closed, the base station detects the operating antenna T1 through the sensor antenna S1, waits for the latch to be inserted, and synchronously outputs a door closing indication signal. When the lock tongue of the protective door is inserted into the lock body, the base station detects the operating antenna T2 through the sensor antenna S2 and drives the push rod of the electromagnet to drive the latch to achieve the locking function. The slotted photoelectric sensor inside the sensor monitors the electromagnet push rod in real time. After the lock is engaged, the sensor monitors the state of the electromagnet through the slotted photoelectric sensor.

[0014] The protective door operating mechanism and electrical part of the protective door are mainly composed of two sets of radio frequency antenna units. The operating antenna T1, together with the transponder chip tag1, senses the sensor and is placed close to the sensor side. The energy of the sensor antenna S1 is coupled through the sensor antenna S1. When the energy is strong enough, the data in the memory of the transponder chip tag1 is automatically sent to the sensor to identify the opening and closing of the protective door. The actuator antenna T2, together with the transponder chip tag2 and the sensor, is placed on the bottom of the bolt. The actuator antenna T2 couples the energy of the sensor antenna S2. When the energy is strong enough, it automatically sends the data in the memory of the transponder chip tag2 to the sensor to identify whether the bolt is inserted. This detection method design enables electromagnetic door locks to achieve a higher level of security protection, making them suitable for industrial safety applications. It provides safety protection for personnel or machinery, reduces the risk of dangerous failures, and also avoids mutual interference between multiple radio frequency channels and saves costs.

[0015] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A security door lock, characterized in that, It consists of a door lock sensor and a protective door operating mechanism; Door lock sensors include: The MCU logic processing unit of the lock body sensor is used to control and detect base station antenna signals, control SPDT switch switching and electromagnet operation, and monitor the status of slot photoelectric sensor. The radio frequency base station unit is used for modulating and driving the antenna and decoding the communication information coupled by the antenna. Sensor antenna S2 is used to detect the position of the lock tongue of the protective door; Sensor antenna S1 is used to detect the opening and closing status of the protective door; The operating components of the protective door include: The electromagnet inside the door lock sensor is used to drive the latch to lock the bolt; The actuator antenna T1 is installed near the lock body and interacts with the sensor antenna S1. The actuator antenna T2 is mounted on the lock tongue and interacts with the sensor antenna S2. The locking mechanism, the bolt, is inserted into the sensor lock body to lock the door.

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