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In-car monitoring system

A monitoring system and car technology, applied in elevators, transportation and packaging, etc., can solve the problems of insufficient accuracy and achieve the effect of accurate detection and protection of personal privacy

Active Publication Date: 2020-04-21
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This kind of elevator car trapped person detection and child protection device only uses infrared temperature detection sensors to check whether there are people in the car, which is not accurate enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 2 As shown, the monitoring system in the car includes a first group of light through-beam sensors 10, a second group of light through-beam sensors 20 and a processor;

[0045] Each group of light-to-radiation sensors includes a beam projector and a beam receiver;

[0046] The beam projector and beam receiver of the same group of light-to-ray sensors are respectively arranged on the left side wall and the right side wall of the car;

[0047] When there is no blocking object on the beam path between the beam projector and the beam receiver of a group of photo-optical sensors, the beam receiver can receive the beam emitted by the beam projector, and the photo-optical sensor outputs a non-blocking signal to said processor;

[0048] When there is a light blocking object on the beam path between the beam projector and the beam receiver of a group of photo-optical sensors, the beam receiver cannot receive the beam emitted by the beam projector, and the photo-...

Embodiment 2

[0061] Based on the first embodiment, the monitoring system in the car also includes a weighing device;

[0062] The weighing device is arranged on the floor of the car for detecting the weight applied to the floor of the car;

[0063] The weighing device is arranged on the floor of the car for detecting the weight applied to the floor of the car;

[0064] The processor, when the weight added to the car floor detected by the weighing device is greater than the set weight, and both the first group of light-to-beam sensors and the second group of light-to-beam sensors output light blocking signals, then Output car occupancy signal.

[0065] The set weight may be 30kg, 35kg, 45kg, etc.

[0066] The monitoring system in the car of the second embodiment can further accurately determine whether there are people in the car by installing a weighing device on the car floor.

Embodiment 3

[0068] Based on the car monitoring system of Embodiment 1, a third group of photo-optical sensors is arranged on both sides of the elevator car door;

[0069] The third group of light-to-radiation sensors, when the beam path between its beam projector and the beam receiver is blocked for longer than the first set time, then output a start signal to the processor; when its beam receiver Continuously receiving the beam emitted by its beam projector for more than a second set time, then outputting a waiting signal to the processor;

[0070] The processor determines that someone has entered the car when the first group of through-light sensors output a light blocking signal and the third group of through-light sensors outputs a start signal, and outputs a signal that someone has entered the car.

[0071] The processor judges that all the people have exited the car when the first group of through-light sensors output no blocking signal and the third group of through-light sensors o...

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Abstract

The invention discloses an in-car monitoring system. The system comprises a first group of optical correlation sensors, a second group of optical correlation sensors and a processor; a light beam projector and a light beam receiver of the same group of light correlation sensors are respectively arranged on the left side wall and the right side wall of a car; when no light blocking object exists ona light beam path between the light beam projector and the light beam receiver of one group of light correlation sensors, a non-blocking signal is output to the processor, and when the light blockingobject exists, a light blocking signal is output to the processor; the distance between a light beam projector and a light beam receiver of the first group of light correlation sensors and the car ground is a first height; the distance between a light beam projector and a light beam receiver of the second group of light correlation sensors and the car ground is a second height, and the second height is greater than the first height; and when the first group of optical correlation sensors output the optical blocking signal and the second group of optical correlation sensors output no blockingsignal, the processor outputs a falling signal in the car.

Description

technical field [0001] The invention relates to elevator equipment, in particular to a monitoring system in a car. Background technique [0002] If a person faints or is injured in the elevator car and cannot call for help, it may cause a long-term trapped person and even a life-threatening accident. In addition, when young children take the elevator without the company of adults, they engage in inappropriate behaviors such as playing around in the elevator and picking on the elevator door, and unforeseen elevator accidents may also occur. [0003] In order to protect the personal privacy of users, home elevators are not suitable for installing cameras to monitor the situation inside the car. Existing elevators basically rely on cameras or temperature sensors. [0004] Such as figure 1 As shown, there is an existing elevator car trapped person detection and child protection device, which includes a car 1, an infrared temperature detection sensor 2 is installed in the car 1...

Claims

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Application Information

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IPC IPC(8): B66B5/00
CPCB66B5/0012
Inventor 梁佳杰董德靖张皓然
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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