Circuit and method for controlling slow closing of elevator doors after elevator power failure
A technology for controlling circuits and elevators, applied in battery circuit devices, circuit devices, elevators in buildings, etc., can solve problems such as personal injury, large impact force, and large pulling force, and achieve the effect of preventing people from being pinched by elevator landing doors.
Inactive Publication Date: 2015-08-26
CHANGZHOU UNIV
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Problems solved by technology
Either way, when the elevator door is fully opened, its pulling force is very large. When the elevator door is opened, it is also the time when people enter and exit. The force of the impact may cause personal injury
Method used
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Embodiment Construction
[0011] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0012] A system for slowly closing the elevator door after the elevator loses power, including a rectifier circuit, a filter circuit, a drive circuit, a voltage loss detection circuit, a boost circuit, a supercapacitor or a battery, and a motor; when the main power supply circuit of the elevator is in the state where the elevator door is open When there is a sudden power failure, the voltage-loss chip detects that the circuit is powered off and will start the boost circuit, and then the boost circuit will transmit the signal to the control circuit, and the system will enter the emergency closing mode. At this time, the spare super capacitor or battery will act as the power supply The landing door motor supplies power, and when the landing door is completely closed, the backup power supply can be cut off, thereby avoiding the danger of the elevator landi...
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The invention discloses a circuit and method for controlling a lift door to be slowly closed after power failure of a lift. The circuit comprises a rectifying circuit, a filtering circuit, a driving circuit, a motor, a super capacitor or battery, a voltage loss detection circuit, a booster circuit and a control circuit, wherein the input end of the rectifying circuit is connected with supply voltage, the output end of the rectifying circuit is connected with the input end of the filtering circuit, the input end of the driving circuit is connected with the output end of the filtering circuit, the output end of the driving circuit is connected with the motor, the output end of the filtering circuit is connected with the input end of the super capacitor or battery, the output end of the filtering circuit is connected with the input end of the booster circuit through the voltage loss detection circuit, the output end of the booster circuit is connected with the input end of the driving circuit, the output end of the booster circuit is connected with the input end of the control circuit, and the output end of the control circuit is connected with the input end of the driving circuit. According to the circuit and method for controlling the lift door to be slowly closed after power failure of the lift, a standby power system is prepared for a lift landing door motor, and the risk that the lift door pinches people due to instant power failure of the lift is avoided.
Description
technical field [0001] The invention relates to a system for slowly closing elevator doors after the elevator loses power, in particular to a system for slowly closing the elevator landing doors by the motor of the elevator landing doors overcoming the door-closing pull force when the elevator doors are opened and the power is suddenly cut off. Background technique [0002] As the building of floors is getting higher and higher, elevators have become very common, and people have higher and higher requirements for the safety of elevators. At present, elevators in the world rely on power sources, and sudden power failures have always been a huge hidden danger to the safety of elevator passengers. For the mechanical structure of the elevator, the elevator doors are divided into inner doors (car doors) and outer doors (landing doors). Because the elevator shaft is a high-risk area, the elevator landing doors are equipped with automatic door closing equipment to make them fully c...
Claims
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IPC IPC(8): H02J7/00H02J7/02B66B13/14H02J9/06
Inventor 马冬梅段攀登蒋益兴徐晓东
Owner CHANGZHOU UNIV