Traffic light display system with filter circuit

Abstract

The invention discloses a traffic light display system with a filter circuit, comprising a traffic light lamppost, a WiFi hotspot, a controller, a mobile terminal and a first wireless communication chip are set up on the traffic light lamppost, and the WiFi hotspot and the first wireless communication chip The chips are all connected to the controller, and a pressure sensor is set on the road around the traffic light post, and the pressure sensor is connected to the second wireless communication chip set on the roadside through a wire, and the first wireless communication chip and the second wireless communication chip are connected to each other. The communication chip is connected in communication, and the mobile terminal is connected in communication with the controller through a WiFi hotspot; the pressure sensor and the second wireless communication chip are sequentially connected in series with a sampling circuit, a filter circuit and an amplification circuit; the filter circuit includes an operational amplifier A1, capacitor C1, capacitor C2 and capacitor C3. Fixed an issue where traffic light status and waiting times could not be seen.

Description

Technical field [0001] The invention relates to a traffic light display system with a filter circuit, which is specifically applied to traffic light intersections where vehicles have a long queue. Background technique [0002] At present, cars have become a part of people’s lives and play an important role in traffic. At present, large vehicles often block the vehicles behind at traffic light intersections. At some busy intersections, the queues of vehicles are relatively long, making the vehicles behind them invisible. To the state of the traffic light. Moreover, in some cities, the traffic lights do not show the time and other problems. When the waiting time is long, the driver is prone to irritability, which may lead to the phenomenon of running lights. Although the traffic lights in some cities cannot display the time, their control centers still control the traffic lights by time. Summary of the invention [0003] The purpose of the present invention is to provide a traffic...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to, in view of the above problems, propose a kind of traffic light display system with filter circuit, to solve the problem that can not see the traffic light status and waiting time

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