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Capacitive sensor anti-pinch detection device for sliding doors
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A capacitive sensor and detection device technology, applied in door/window accessories, power control mechanisms, wing leaf control mechanisms, etc., to achieve the effects of low standby power consumption, not easy to be triggered by mistake, and long service life
Active Publication Date: 2018-10-19
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Therefore, this implementation method has relatively large limitations. First, the material of the capacitorelectrode is not limited to the wire, it can be a conductor; second, the realization of the capacitance does not necessarily require two wires. the surrounding land
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Embodiment 1
[0051]The first capacitor plate 3a and the second capacitor plate 3b can be fixedly arranged on the sliding doors 1, 2, and move synchronously with the opening and closing of the sliding doors 1, 2;
[0052] like Figure 2 to Figure 4 As shown, the metal shielding plate 4 of the first capacitor plate 3a is fixedly arranged on the first sliding door 1, and the metal shielding plate 4 of the second capacitor plate 3b is fixedly arranged on the second sliding door 2 through the connecting rod 5, so that the two The two capacitive plates 3a, 3b are staggered from each other in the direction of motion to ensure that the two do not interfere with each other when moving with the sliding doors 1, 2;
[0053] After such arrangement, the effective sensing areas 8 on both sides are less likely to interfere with each other during the movement of the sliding doors 1 and 2 .
Embodiment 2
[0055] The first capacitor plate 3a and the second capacitor plate 3b can also be arranged on the outside of the sliding doors 1, 2, and are fixedly installed by the fixed column 9, and do not move with the sliding doors 1, 2;
[0056] like Figure 5 As shown, the metal shielding plates 4 of the two capacitor plates 3a, 3b are respectively fixed on the outside of the sliding door opening and closing space formed by the sliding doors 1, 2 through the fixing columns 9, and do not move with the sliding doors 1, 2.
Embodiment 3
[0058] The first capacitive plate 3a and the second capacitive plate 3b can also be arranged above and / or below the sliding door opening and closing space formed by the sliding doors 1, 2, and do not move with the sliding doors 1, 2;
[0059] like Image 6 As shown, the metal shielding plates 4 of the two capacitive plates 3a, 3b are respectively fixed on the bottom door frames of the sliding doors 1, 2, and do not move with the sliding doors 1, 2.
[0060] like Figure 7 As shown, the metal shielding plates 4 of the two capacitor plates 3a, 3b are respectively fixedly arranged on the bottom door frame and the top door frame of one of the sliding doors 1, and do not move with the sliding doors 1, 2;
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Abstract
The invention discloses a capacitance-type sensor anti-pinch detection device for a sliding door. The capacitance-type sensor anti-pinch detection device comprises a capacitancesignalprocessing unit connected with one or more capacitance plates through a signal line. Each capacitance plate is covered with an insulating plate. The outer portions of the insulating plates are covered with metal shielding plates. The capacitance plates collect capacitance values and transmit the capacitance values to the capacitance signalprocessing unit. The capacitance signal processing unit judges whether a human body is in the effective induction area or not according to the changing situation of the collected capacitance values. False triggering of the capacitance-type sensor anti-pinch detection device is not likely to happen, and the capacitance-type sensor anti-pinch detection device is only effective for the human body, electrolytes and other objects capable of changing the capacitance.
Description
technical field [0001] The invention relates to a detection device, in particular to a capacitive sensor anti-pinch detection device for a sliding door. Background technique [0002] Sliding door devices need to detect whether people are present at the entrance and exit to prevent people from being trapped during the door closing process. The anti-pinch detection of existing sliding doors is mainly through light curtain detection. The light curtain detection technology is mature, and it is the mainstream sliding door entrance and exit anti-pinch detection device in the elevator industry. However, this technology also has disadvantages such as fragile, high cost, and high power consumption. [0003] Chinese invention patent CN200580048230 discloses a sensor using the principle of capacitive measurement. It uses two parallel wires as the positive and negative electrodes of the capacitor. If the human body enters the electric field between the parallel capacitors, it will be ...
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Application Information
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