Switch array circuit and communication device of automobile diagnosis system

A switch array and switch technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of short life cycle of contacts and high mass production cost

Active Publication Date: 2015-11-11
LAUNCH TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a switch array circuit, aiming to solve the problem of short life cycle of mechanical relay contacts and high mass production cost and heat generation of the communication device of the traditional automobile diagnostic system

Method used

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  • Switch array circuit and communication device of automobile diagnosis system
  • Switch array circuit and communication device of automobile diagnosis system
  • Switch array circuit and communication device of automobile diagnosis system

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Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] see figure 1 , the switch array circuit in the preferred embodiment of the present invention is connected between the controller (11, 12) and the connector 20, including a power supply module 31, a drive module 32, a transceiver module 33 and a switch array 34. In this embodiment, the connector is a 26pin connector. Controllers include master controllers and slave controllers.

[0018] refer to figure 2 , the switch array 34 has a plurality of switch channels ORLn (n is a positive integer) composed of light-controlled MOS relays (G3EM-61-G1), each of the...

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Abstract

The invention provides a switch array circuit and a communication device of an automobile diagnosis system. The switch array circuit is connected between a controller and a connector. The switch array circuit comprises a power supply module, a driving module, a transmit-receive module and a switch array, wherein the switch array a plurality of switch channels formed by light-operated MOS relays; each switch channel comprises a power port, a drive port, a data port and an output port; the driving modules has a plurality of driving ends; and the transmit-receive module has a plurality of transmit-receive ends for transmitting and receiving diagnosis signals; the power port of each switch channel is connected with the power supply module, the drive port of each switch channel is connected with a corresponding drive end of the driving module, the data port of each switch channel is connected with a corresponding transmit-receive end of the transmit-receive module, and the output port of each switch channel is connected with a corresponding pin of the connector. The switch array circuit adopts the switch array formed by the light-operated MOS relays, and the light-operated MOS relays belong to contactless switches, and have no noise and long service lives.

Description

technical field [0001] The invention relates to automobile diagnosis technology, in particular to a switch array circuit and a communication device of the automobile diagnosis system. Background technique [0002] The communication device of the traditional automobile diagnosis system mostly adopts the mechanical relay switch. The mechanical relay is a contact switch based on the electromagnetic principle. It has the disadvantages of switching noise pollution, large drive current, large volume, short contact life cycle, and high mass production cost. Some traditional communication devices also use analog switches, most of which have large on-resistance and cannot meet the needs of CANBUS bus communication, and analog switches with small on-resistance are expensive. Contents of the invention [0003] The purpose of the present invention is to provide a switch array circuit, aiming to solve the problems of short life cycle of mechanical relay contacts and high cost of mass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 刘均郝书芳
Owner LAUNCH TECH CO LTD
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