Elevator detection device

Abstract

The invention discloses an elevator detection device. The elevator detection device comprises a sensor group and a judging unit, wherein the sensor group at least comprises one sensor and is used fordetecting people and/or objects passing through an entrance and exit of an elevator car; the judging unit is used for judging whether people and/or objects pass through the entrance and exit of the elevator car or not according to detection signals output by the sensor group; the sensor group is mounted on a mounting seat at the upper part of the entrance and exit of the elevator car, the mountingseat is positioned on an elevator car body, and the sensor group is distributed along the width direction of a car door and is used for detecting people and/or objects passing through the entrance and exit of the elevator car from top to bottom; and a detection area of the sensor group comprises an area where an elevator car door is located, and the ratio alpha of the width of the detection areain the width direction of the car door to the width of the car door meets the condition that alpha is greater than or equal to 0.5 and less than or equal to 1. According to the elevator detection device, a vertical detection mode is adopted, so that the cost of the sensor and the complexity of installation and wiring are reduced, the width information of people and/or objects passing through the entrance and exit of the elevator car is directly and accurately detected, and the occupied area of the elevator car is obtained.

Description

technical field [0001] The invention relates to elevator equipment, in particular to an elevator detection device. Background technique [0002] At present, the elevator is usually equipped with a weighing device to detect the weight of the load (and its contents) in the car. When the load in the car reaches a certain threshold (determined by the rated load of the elevator), if the elevator stops at the landing and the car The car is already fully loaded or close to full, so passengers cannot enter the car. In order to avoid problems such as reduced efficiency and passenger complaints caused by invalid stops of the elevator, in this case the elevator will no longer respond to the call signal on the landing. [0003] However, when there is a load that occupies a large area but not very heavy in the car, the weight of the elevator load detected by the weighing device has not reached the above threshold, so the elevator will still respond to the call signal on the landing The ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned shortcomings of Japanese patent JP2013043711A, which has a large error in occupied area, the Chinese invention patent application 201780090924.7 analyzed that the reason for the large error in occupied area caused by the scheme of Japanese patent JP2013043711A lies in the difference between the pre-specified width and the actual passenger entering the car (and the passengers they carry). There is a big difference between the width of the elevator car, so it is proposed to set the sensor in JP2013043711A on the same side of the elevator car entrance instead of on both sides of the elevator car entrance, and to detect whether it is being used by passengers (and their belongings) The occlusion is changed to detect the distance from the sensor to the passenger (and their belongings) to realize the width detection of the passenger (and their belongings); and then use the time information of the detection signal to obtain the distance between the passenger (and his belongings) in the depth direction of the elevator car. length; using the position information of the detection signal in the vertical direction to obtain the height of the passengers (and their belongings), thus constructing the three-dimensional shape of the passengers (and their belongings); finally, the three-dimensional shape of the passengers (and their belongings) The shape is calculated to obtain the occupied area of ​​passengers (and their belongings) in the elevator car

Although this solution overcomes the shortcomings of the large error in the occupied area of ​​the Japanese patent JP2013043711A, distance sensors need to be installed on both sides of the elevator car entrance and exit, and the three-dimensional shape of the passengers (and their belongings) needs to be constructed and calculated from the three-dimensional shape. Due to the occupied area of ​​passengers (and their belongings), there are a large number of sensors (both sides of the entrance and exit need to be installed, and the sensors on each side need to cover the height of the car door, so more sensor units are required, such as Figure 1a , Figure 1b As shown, there are 15 sensors on each side, totaling 2×15=30), high cost, complex installation and high space requirements (such as Figure 1c As shown, the first distance sensor group 11 and the second distance sensor group 12 need to stagger the distance D) and other shortcomings

At the same time, the solution is to detect the distance between the sensor and the passengers (and their belongings) in the horizontal direction, and what needs to be calculated is the occupied area of ​​the passengers (and their belongings), that is, the projected area on the floor of the elevator car (vertical direction), so when passengers enter the car side by side (there is a certain distance between passengers), they may not be able to recognize the blank space between passengers, which will result in the obtained three-dimensional shape taking into account the blank space between passengers, and finally There is still a large error in the obtained occupied area

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