Rainfall sensing device capable of indicating hazard index

Abstract

The invention discloses a rainfall sensing device capable of indicating a hazard index. The rainfall sensing device comprises a microprocessor module, an audible and visual alarm module, an infrared ray transmitting module, an infrared ray receiving module and a communication module. The audible and visual alarm module comprises a pulse generating circuit, an audio pulse generator, an LED lamp and an electroacoustic transducer. The input end of the pulse generating circuit is connected with the microprocessor module, and the output end is connected with the LED lamp. The input end of the audio pulse generator is connected with the microprocessor module, and the output end is connected with the electroacoustic transducer. The input end of the infrared ray transmitting module is connected with the microprocessor module. The output end of the infrared ray receiving module is connected with the microprocessor module. The rainfall sensing device can reduce actions of a driver for dialing a windshield wiper and adjusting the speed of the windshield wiper, and can remind the driver of hazard index change in driving in rain through light and sound. The driver can appropriately adjust driving speed or performs stopping according to light flushing speed and sound interval length.

Description

technical field [0001] The invention relates to a rain sensor, in particular to a rain sensor device capable of indicating danger index. Background technique [0002] The rain sensor is hidden behind the front windshield, and it can adjust the action of the wiper according to the amount of rain falling on the glass, thus greatly reducing the driver's troubles. The rain sensor does not change the action speed of the wiper with a few limited gears, but adjusts the action speed of the wiper steplessly. It has a light-emitting diode called an LED that is responsible for sending out far-infrared light. When the glass surface is dry, the light is almost 100% reflected back, so that the photodiode can receive a lot of reflected light. The more rain on the glass, the less light is reflected back, which results in faster wiper action. [0003] In the process of driving, although the rain sensor can change the speed of the wiper action according to the size of the rain, this simply ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the driving process of rain, the driver cannot intuitively understand the change of the risk index brought by the rain to driving, and the purpose is to provide a rain sensor device that can indicate the risk index, so as to remind driving The purpose of the risk index of driving caused by heavy rain

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