Low-power-consumption intelligent traffic lamp with driving function
A low-power, traffic light technology, applied in the field of intelligent transportation, can solve the problems of inability to deal with overshoot signals in time, poor driving effect of LED lights, high energy consumption and high energy consumption, etc., to achieve high power adaptation characteristics and The effect of versatility, good control, and low power consumption
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Embodiment 1
[0020] Pulse controller A, used to control the duty cycle of the power supply; pulse controller B, used to control the discharge of residual charges and cut off the no-load power supply; the first field effect transistor Q3, receiving the duty cycle modulation output by the pulse controller A clock and turn on or off the power supply; step-down modulation circuit, with a discharge circuit structure, receives the first modulation power output from the first field effect transistor, receives the control clock output from the pulse controller B and compensates or discharges the first field effect The first modulation power output by tube Q3; the second field effect tube Q2 is controlled by the step-down modulation circuit and forms a step-down switch circuit structure with the first field effect tube Q3; the digital isolator isolates the step-down modulation circuit and the lower circuit .
[0021] The step-down modulation circuit includes an inductor L1, which receives the first...
Embodiment 2
[0023] In the power state of the lower circuit, the power supply is AC, the pulse controller B outputs a low-power control clock, the transistor Q6 is not turned on and the field effect transistor Q2 is cut off, if the pulse controller A outputs a low-power reference clock and outputs a high-power duty Compared with the modulation clock, the field effect transistor Q5 is cut off, the field effect transistor Q3 is turned on, the lower circuit obtains a stable DC power supply through the digital isolator, and the capacitor C1 and capacitor C3 are fully charged; when the lower circuit is powered off, the pulse controller A Immediately synchronize the inverse duty ratio modulation clock and the reference clock, the FET Q3 is cut off, the pulse controller B outputs a high power control clock, the triode Q6, the FET Q2, the FET Q4 and the FET Q5 are turned on, and The conduction of the field effect transistor Q4 needs to be faster than the synchronous inversion of the output of the p...
Embodiment 3
[0025] The LED array includes a body, a diffuser cover, a reflective plate and a plate with LEDs, the reflective plate is composed of a plurality of partial reflective plates, and the partial reflective plates are separated by air gaps and distributed obliquely on the In the space between the main body and the diffusion cover, different angles are formed with the main body. The partial reflection plate is inclined at different angles γ relative to the body, and the angle γ satisfies the condition of 8°<γ<50°, thereby eliminating the dazzling effect of LED lights and preventing pedestrians and vehicles on the road from being dazzled by the lights of the present invention. pose a threat while simplifying the design of the lamp.
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