Escalator inlet human body inductor

Abstract

The invention relates to an escalator inlet human body inductor which ensures that a mobile signal of a human body is accurately detected at an escalator inlet so as to realize the aim of energy saving by suspending the running of an escalator when the escalator is not used. A human body signal collecting circuit comprises a power supply circuit, an ultrasonic transceiver and a matched drive circuit thereof as well as a feedback signal processing circuit, wherein the power supply circuit is used for providing a working power supply for other circuits after being subjected to filtration and voltage reduction; a controller is used for transmitting a drive signal to the input end of the drive circuit and driving the ultrasonic transceiver to send an ultrasonic signal; after the ultrasonic signal is reflected by a moving human body, the ultrasonic transceiver receives reflecting echo, and the reflecting echo is transmitted to a central processing unit after processed by the feedback signal processing circuit; and an escalator action signal is output after calculating by the central processing unit. The invention has the advantages of suspending the running of the escalator when not used, saving energy and preventing the condition of not collecting the moving information of a human body when people pass through.

Description

Human body sensor for escalator entrance technical field The invention belongs to the technical field of energy saving of escalators, and relates to a device for human body induction at the entrance of an escalator, in particular to the application of the technology of using an ultrasonic transceiver to collect human body movement signals in the energy saving control of an escalator. Background technique Escalator equipment has been widely used, especially in shopping malls and supermarkets. In order to facilitate customers to shop, escalators are designed to save people's fatigue when going up and down stairs, and also improve the shopping environment. Generally, during the holidays, which is also the peak time for people to shop, the escalators are basically working all the time to carry customers. However, in the morning or evening of normal times or holidays, as the passenger flow decreases, the no-load time of the escalator also increases. When the escalator is empty,...

AI Technical Summary

Problems solved by technology

However, after long-term research and observation, it is found that this technology also has defects: 1), the sensor is not sensitive to dark clothes

2) The light has a great influence on it, which limits its performance and application

3) The sensing area is in the form of a straight line at the boundary, and there may be a phenomenon of crossing

4) The working status prompt device in the light-emitting mode cannot be installed close to the sensor, so that the prompt system and the sensor are separated, which increases the manufacturing cost and installation complexity

5), Directional requirements are very strict, so installation and debugging are very difficult

Once these problems occur when the actual escalator is used, it will bring great inconvenience to the customer, that is, the problem of "inaccurate judgment" of the escalator has occurred. Therefore, this provides a research direction and improvement for those skilled in the art. technical necessity

Images