Anti-interference vehicle windscreen wiper relay

Abstract

The invention discloses an anti-interference vehicle windscreen wiper relay, and belongs to the technical field of electronic devices. The relay comprises an outer cover, a seat plate, a relay terminal, a circuit, and an element. An electronic circuit is provided with a start delay circuit, a washing delay circuit, an intermittent water-wiping circuit, an amplification switching output circuit, an anti-interference circuit, a power filtering circuit, and a voltage-stabilizing circuit. The relay completely reaches the standards: GB18655-2002 'limiting value and measurement method for protecting radio interference property of a vehicle-mounted receiver' and a standard of a windscreen wiper relay with the transient noise immunity being ISO7637-2 'electric transient conduction along a power line'. The relay can prevent the circuit of a product from being burned down because of high voltage, improves the anti-interference and filtering capabilities, and completely improves the reliability, safety and stability. The relay is simple in structure, is small in size, is high in performance parameter precision, saves a vehicle space, and reduces the cost of a product.

Description

technical field [0001] The invention relates to an anti-interference vehicle wiper relay, in particular to a vehicle wiper relay with electromagnetic compatibility. Background technique [0002] With the continuous development of automotive electronic technology, the number of automotive electronic equipment has increased greatly, the operating frequency has gradually increased, and the power has gradually increased, making the working environment of the automobile flooded with electromagnetic waves, resulting in increasingly prominent electromagnetic interference problems, affecting the normal work of electronic equipment, and even Corresponding electrical components may be damaged. Therefore, more and more attention has been paid to the electromagnetic compatibility performance of automotive electronic equipment, in order to enhance the safety and reliability of vehicle operation. The electromagnetic compatibility requirements for automotive electronic products are also g...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing automobile wiper relay cannot meet the requirements of ISO 7637-2 on component immunity and radiation interference and radiation immunity GB18655— 2002 "Limits and Measurement Methods of Radio Disturbance Characteristics Used to Protect Vehicle-mounted Receivers" test level requirements provide a wider practical range and a higher level of electromagnetic compatibility test, and at the same time meet the car start-up delay, washing delay, Wiper relay for intermittent wiper function

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