Online function testing device of handheld LED traffic digital countdown display unit

Abstract

The invention discloses an online function testing device of a handheld LED traffic digital countdown display unit. The online function testing device comprises a shell, the upper end face of the shell is provided with a clamping groove matched with the LED traffic digital countdown display unit to be detected in shape, the clamping groove is provided with a cover plate, the cover plate is provided with a contact hole corresponding to a to-be-detected point of the LED traffic digital countdown display unit to be detected in position, three elastic contact electrodes are arranged in the clamping groove, a circuit control module is installed in the clamping groove and comprises a self-locking-type output conversion circuit and a two-way display function conversion circuit, the input end of the self-locking-type output conversion circuit is connected with an ingoing line of a power supply, and the output end of the two-way display function conversion circuit is connected with the elastic contact electrodes through wires. The online function testing device can accurately and quickly position and detect the LED traffic digital countdown display unit if applied to a flow production line, and production efficiency of the flow production line is greatly improved.

Description

Technical field [0001] The invention relates to the technical field of traffic signal control, in particular to a device for testing the function of an LED traffic digital countdown display unit. Background technique [0002] In recent years, with the development of technology and the popularization of vehicles, the construction of intelligent road traffic has become more urgent. As the main tool for the construction of road traffic, traffic signal lights are used to transmit right of way information to traffic participants through its display unit. Therefore, traffic participants’ requirements for signal light display units are constantly increasing, making the traffic control display unit intelligent and Humanization has also become more important. [0003] The auxiliary LED traffic digital countdown display unit of the traffic signal lamp is used to display the countdown time of the signal status of the traffic intersection, which helps to improve the traffic capacity of the in...

AI Technical Summary

Problems solved by technology

At present, when manufacturers test the display function of the LED traffic digital countdown display unit, the method is relatively simple, that is, to select different DC voltage plugs for detection by hand positioning

This method is not only time-consuming but also inaccurate, and does not meet the online detection requirements of large-scale assembly line production

Images