Self-adaptive traffic signal countdown display device and control method thereof
A traffic signal and display device technology, applied in the field of intelligent traffic control, can solve the problems of not being able to support communication-triggered learning adaptation at the same time, not involving learning and triggering control methods, and not supporting simple traffic guidance prompt information, etc. System stability, enhanced system security, and simple circuit design effects
A traffic signal and display device technology, applied in the field of intelligent traffic control, can solve the problems of not being able to support communication-triggered learning adaptation at the same time, not involving learning and triggering control methods, and not supporting simple traffic guidance prompt information, etc. System stability, enhanced system security, and simple circuit design effects
CN104167104AActive Publication Date: 2014-11-26杭州普乐科技有限公司
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[0022] Such as Figure 1-Figure 4 As shown, 1 is the power management and signal acquisition module, including modules such as image 3 and Figure 4 As shown, the power management part uses the RS407 bridge stack as the rectifier circuit. As long as one of the 3~6 groups of signals provides power, the control module can obtain the normal working voltage; through the S2M and the voltage divider circuit, the EL817 optocoupler provides the light status signal to the The IO port of the single-chip microcomputer STC15W408S is completed by the STC15W408S to complete signal acquisition and processing.
[0023] 2 is the wireless receiving module, the receiving module selects a general module, and its output signal is an RS-232 serial signal, which is transmitted to the IO port of STC15W408S through the interface chip MAX232 on the control board, reads the port with software, inputs the buffer, and obtains the corresponding data , to get the countdown display information.
[0024] ...
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The invention provides a self-adaptive traffic signal countdown display device and a control method of the self-adaptive traffic signal countdown display device. The self-adaptive traffic signal countdown display device comprises a system scheduling module which is connected with a power source management module, a light color detection module and a trigger signal detection module respectively, a countdown information receiving module and a countdown information display module. The countdown information receiving module is connected with a wireless module, a network module, a power carrier communication module and an RS-485 communication module respectively. According to the self-adaptive traffic signal countdown display device and the control method of the device, a design framework that a high-voltage module is isolated from a low-voltage module is adopted, and the high-voltage part and the lower-voltage part are isolated through an optocoupler, so that system stability is enhanced, and convenience is brought to maintenance. The self-adaptive traffic signal countdown display device aims to be simplified in circuit and stable in performance and conduct display smooth transition when work modes are switched, and the traffic signal countdown device which is high in price performance ratio and complete in function is provided for the intelligent traffic control and management field.
Description
technical field [0001] The invention belongs to the field of intelligent traffic control. Background technique [0002] At present, the traffic signal countdown display device is widely used in the intelligent traffic signal light control system, and its function is mainly to display the remaining time of the current traffic red, yellow and green signals. The device currently adopts many technical methods, such as single learning type, single RS-485 communication type, single signal trigger type, trigger learning combination type, communication learning combination type, etc. The single-learning countdown display device is suitable for environments without communication cables, which saves laying costs. The disadvantage is that the display information often appears in digital disorder when the period is switched or in the self-sensing and adaptive control of the coordinated system; the single-communication type is suitable for countdown In the case of changeable information...
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Patent Timeline
26 Nov 2014
Publication
CN104167104A
- IPC
- G08G1/096
- Inventors
- 文建斌; 许明洪