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Several multiple physical quantity sensor digual bus transmission system

A sensor signal, bus transmission technology, applied in the direction of transmission system, digital transmission system, multiple use of transmission path, etc., can solve the problem of using large cables

Inactive Publication Date: 2005-03-30
北京唐智科技发展有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a technology that detects multiple composite sensor signals of various physical quantities through the sensor bus, and solves the problem of using a large number of cables due to the large number of multiple physical quantity sensors used for separate transmission to monitoring instruments in engineering field applications. question
[0004] Another object of the present invention is to solve the problem of the multi-physical quantity detection compound sensor and its signal conditioner connected with the sensor bus

Method used

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  • Several multiple physical quantity sensor digual bus transmission system
  • Several multiple physical quantity sensor digual bus transmission system
  • Several multiple physical quantity sensor digual bus transmission system

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Embodiment Construction

[0020] Such as Figure 1-7 Shown:

[0021] It consists of sensor 1, junction box 2 and bus 3, where

[0022] The sensor 1 is a composite sensor containing a plurality of physical quantity sensitive devices and a built-in conditioner;

[0023] The junction box 2 is an active junction box containing a plurality of sensor sockets 20 (201-20M), a computer 21, a plurality of physical quantity switches 22, a communication interface 23, and a bus socket 24 (241-242);

[0024] Each junction box 2 is connected to equal to or less than M sensors 1 through a sensor socket 20 (201-20M);

[0025] The bus 3 is a composite bus containing a power line 31, an analog communication line 32, a digital communication line 33, 34 and a ground line 35;

[0026] The composite bus 3 from the monitoring instrument is connected with the bus socket 24 (such as 241) of any active junction box 2 through the plug socket, and another bus socket (such as 242) of the active junction box 2 is connected with a...

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Abstract

The present invention utilizes single composite bus and several active joint-boxes to detect lots of signals of composite sensor containing several physical quantities sensing devices and internal-mounted modulator. It can obtain rich information, and can make voltage and current conversion in the active joint-boxes so as to can raise transmission distance, improve frequency response, resist interference and make treatment for resisting pollution in the joint-box. It has excellent effect in the tests of vehicle fault diagnosis system.

Description

technical field [0001] The invention relates to a signal bus transmission system of multiple physical quantity sensors, which belongs to system monitoring and testing devices. Background technique [0002] In the existing systems involving the detection of multiple physical quantities and the application of multiple sensors for the same physical quantity, some of them are transmitted separately by each sensor, such as the sensors for vibration and shock detection that have been widely used in single-point and multi-point detection in the past; Some digitize the output of each sensor of the same physical quantity, especially digitize the distinguishing number of the sensor, and then transmit it through the sensor bus, such as the digital temperature sensor 18b20, which digitizes the detected temperature and uses I 2 C way to send, and each of this type of sensor has a unique number saved by 64-bit laser ROM, the temperature detection device through I 2 C bus, call the number...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/12G01D21/02H01H36/00H04L5/00H04L21/00
Inventor 唐德尧杨政明吴拥军王巍松
Owner 北京唐智科技发展有限公司
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