Electromagnetic lock state detection circuit and vehicle
By designing a state detection circuit compatible with multiple models of electromagnetic locks and utilizing a combination of detection modules connected by different feedback pins, the high cost of electromagnetic lock detection circuits in the prior art has been solved, achieving state detection compatibility for three-wire, four-wire, and five-wire electromagnetic locks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHINRY TECH
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, there are various models of electromagnetic locks, which requires different detection circuits, resulting in high costs and incompatibility with the status detection of multiple models of electromagnetic locks.
An electromagnetic lock status detection circuit was designed, including a first detection module, a second detection module, a third detection module, and a control module. Through different feedback pin connection methods, it can be compatible with three-wire, four-wire, and five-wire electromagnetic locks, and the status of the electromagnetic lock can be detected by using different combinations of detection modules.
It achieves compatibility with the status detection of various types of electromagnetic locks, reducing the cost of electromagnetic lock status detection circuits.
Smart Images
Figure CN224511050U_ABST
Abstract
Claims
1. An electromagnetic lock status detection circuit, characterized by, It includes a first detection module, a second detection module, a third detection module, and a control module. The input terminal of the first detection module is connected to the output terminal of the power supply, the output terminal of the first detection module is connected to the first input terminal of the control module, the input terminal of the second detection module is connected to the output terminal of the power supply, the input terminal of the third detection module is connected to the output terminal of the power supply, and the output terminal of the third detection module is connected to the second input terminal of the control module. When the electromagnetic lock includes a feedback pin, the feedback pin of the electromagnetic lock is connected to the detection terminal of the first detection module, and the first detection module is used to detect the state of the electromagnetic lock. When the electromagnetic lock includes two feedback pins, the first feedback pin of the electromagnetic lock is connected to the detection terminal of the first detection module, and the second feedback pin of the electromagnetic lock is connected to the detection terminal of the second detection module. The first detection module and the second detection module are used to detect the state of the electromagnetic lock. When the electromagnetic lock includes three feedback pins, the first feedback pin of the electromagnetic lock is connected to the detection terminal of the first detection module, the second feedback pin of the electromagnetic lock is connected to the detection terminal of the second detection module, and the third feedback pin of the electromagnetic lock is connected to the detection terminal of the third detection module. The first detection module, the second detection module, and the third detection module are used to detect the state of the electromagnetic lock.
2. The electromagnetic lock status detection circuit of claim 1, wherein, When the electromagnetic lock includes a feedback pin and is a three-wire electromagnetic lock; when the level of the first input terminal of the control module is low, the three-wire electromagnetic lock is in a locked state; when the level of the first input terminal of the control module is high, the three-wire electromagnetic lock is in an unlocked state.
3. The electromagnetic lock status detection circuit of claim 1, wherein, When the electromagnetic lock includes two feedback pins and is a four-wire electromagnetic lock, the four-wire electromagnetic lock is in a locked state when the level of the first input terminal of the control module is low; and in an unlocked state when the level of the first input terminal of the control module is high.
4. The electromagnetic lock status detection circuit of claim 1, wherein, When the electromagnetic lock includes three feedback pins and is a five-wire electromagnetic lock, the five-wire electromagnetic lock is in a locked state when the level of the second input terminal of the control module is low; and in an unlocked state when the level of the first input terminal of the control module is low.
5. The electromagnetic lock status detection circuit according to any one of claims 1 to 4, characterized in that, The first detection module includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, and a first switching transistor. The first end of the first resistor is connected to the output end of the power supply. The second end of the first resistor is connected to the first input end of the control module, the first end of the first capacitor, and the first end of the first switching transistor. The second end of the first switching transistor is connected to the first end of the second resistor and the first end of the third resistor. The first end of the fourth resistor is connected to the detection end of the first detection module. The second end of the third resistor is connected to the second end of the fourth resistor and the first end of the second capacitor. The second end of the first capacitor, the third end of the first switching transistor, the second end of the second resistor, and the second end of the second capacitor are grounded.
6. The electromagnetic lock status detection circuit of claim 5, wherein, The first detection module further includes a fifth resistor, a sixth resistor, a seventh resistor, a third capacitor, a first diode, and a second diode; the first end of the fifth resistor and the negative terminal of the first diode are connected to the output terminal of the power supply, the second end of the fifth resistor is connected to the first end of the sixth resistor and the second end of the third resistor, the second end of the sixth resistor is connected to the first end of the seventh resistor, the first end of the third capacitor, the positive terminal of the first diode, the negative terminal of the second diode, and the output terminal of the electromagnetic lock, and the second end of the seventh resistor, the second end of the third capacitor, and the positive terminal of the second diode are grounded.
7. The electromagnetic lock status detection circuit of claim 6, wherein, When the electromagnetic lock is in the locked state, the output terminal of the electromagnetic lock outputs a low level; when the electromagnetic lock is in the unlocked state, the output terminal of the electromagnetic lock outputs a high level.
8. The electromagnetic lock status detection circuit according to any one of claims 1 to 4, characterized in that, The second detection module includes an eighth resistor, the first end of which is connected to the output terminal of the power supply, and the second end of which is connected to the detection terminal of the second detection module.
9. The electromagnetic lock status detection circuit according to any one of claims 1 to 4, characterized in that, The third detection module includes a ninth resistor, a tenth resistor, an eleventh resistor, a fourth capacitor, a fifth capacitor, and a second switching transistor. The first end of the ninth resistor is connected to the output terminal of the power supply. The second end of the ninth resistor is connected to the second input terminal of the control module, the first end of the fourth capacitor, and the first end of the second switching transistor. The second end of the second switching transistor is connected to the first end of the tenth resistor, the first end of the eleventh resistor, and the first end of the fifth capacitor. The second end of the eleventh resistor is connected to the detection terminal of the third detection module. The second end of the fourth capacitor, the third end of the second switching transistor, the second end of the tenth resistor, and the second end of the fifth capacitor are grounded.
10. A vehicle characterized by comprising: Includes the electromagnetic lock status detection circuit and electromagnetic lock as described in any one of claims 1 to 9.