CN203376630U

CN203376630U - CAN bus-based vibration test monitoring system

Info

Publication number: CN203376630U
Application number: CN201320451736.1U
Authority: CN
Inventors: 张巧寿; 邹文; 刘军
Original assignee: BEIJING ETS SOLUTIONS Ltd; China Academy of Launch Vehicle Technology CALT; Beijing Institute of Structure and Environment Engineering; Tianjin Aerospace Ruilai Technology Co Ltd
Current assignee: BEIJING ETS SOLUTIONS Ltd; China Academy of Launch Vehicle Technology CALT; Beijing Institute of Structure and Environment Engineering; Tianjin Aerospace Ruilai Technology Co Ltd
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2014-01-01
Anticipated expiration: 2023-07-26

Abstract

The utility model belongs to the field of monitoring systems, in particular a CAN bus-based vibration test monitoring system. The CAN bus-based vibration test monitoring system includes a DSP in a core position; the DSP is provided with I/O conversion interfaces, a CAN bus and an A/D conversion interface; the DSP is connected with an upper computer through the CAN bus and exchanges data with the upper computer through the CAN bus; the DSP is in data communication with a local touch screen and other subsystems through the CAN bus; external digital-format input data are inputted into an input-end I/O conversion interface of the DSP through an input-end isolation conversion circuit; data processed by the DSP are transmitted to an output-end isolation conversion circuit through an output-end I/O conversion interface, and are further transmitted to a power amplification and peripheral control unit; and external analog-format input data are transmitted to the A/D conversion interface of the DSP through a signal conditioning circuit. With the CAN bus-based vibration test monitoring system adopted, parameter setting, monitoring and control of a plurality of power amplifiers can be integrated on one main control computer interface, such that coordinative and unified processing can be realized, and therefore, the CAN bus-based vibration test monitoring system is advantageous in more convenient operation, higher work efficiency and more reliable testing.

Description

A kind of vibration test supervisory system based on the CAN bus

Technical field

This novel supervisory system that belongs to, be specifically related to a kind of vibration test supervisory system based on the CAN bus.

Background technology

Multi pilot system and many excited vibration pilot system are comprised of two or more shaking tables usually, and each shaking table has a set of independently power amplifier.The operation of power amplifier is mainly to realize by the control panel of power amplifier, and this vibration experiment formed for multi shaker is very inconvenient.

In vibration test, a plurality of power amplifiers need control separately and arrange, and can't realize the adjusted in concert of synchro control and gain.And the protection of power amplifier is again relatively independent.Because each system is independently, in test during the abnormal situation, can not realize interlock protection, this has brought potential danger to test.The joint control technology of multi shaker is one of problem of needing badly solution.

In traditional mode of operation, start and stop and the setting of the device such as cooling system, excitation unit, gain amplification, test parameters as the demonstration of the information such as power amplifier output voltage, electric current all on the control panel of power amplifier.These parameters can only obtain by the mode manually read, and need hand-kept.Record these parameters and be conducive in test afterwards, process data compared and analyze, thereby hold test situation better.The higher data for requirement of real-time, the mode of manual record can not meet the demands often.

Summary of the invention

This novel purpose is the defect for prior art, and a kind of vibration test supervisory system based on the CAN bus is provided.

This is novel is achieved in that a kind of vibration test supervisory system based on the CAN bus, wherein, comprise the DSP in core position, this DSP is provided with the I/O translation interface, CAN bus and A/D translation interface, DSP is connected with host computer by the CAN bus, and carry out data interaction by CAN bus and host computer, DSP also is communicated with local touch-screen and other subsystem data respectively by the CAN bus, outside digital format input data isolate by input end the input end I/O translation interface that change-over circuit is input to DSP, the data that DSP processed send to output terminal isolation change-over circuit by output terminal I/O translation interface, then send to power amplifier and peripheral control, outside analog format input data send to the A/D translation interface of DSP by signal conditioning circuit.

A kind of vibration test supervisory system based on the CAN bus as above; wherein; this supervisory system also comprises interlock protection; this interlock protection is accepted the signal from input end isolation change-over circuit, signal conditioning circuit and other subsystem; after the comprehensive judgement of interlock protection, interlock protection sends gating signal to output terminal isolation change-over circuit.

This novel beneficial effect is: the application's supervisory system can concentrate on parameter setting, the monitoring and controlling of a plurality of power amplifiers unified Coordination Treatment on a main control computer interface, and more convenient to operate, work efficiency is higher, tests more reliable.

The accompanying drawing explanation

Fig. 1 is the structural representation of this novel a kind of vibration test supervisory system based on the CAN bus provided.

Embodiment

As shown in Figure 1, a kind of vibration test supervisory system based on the CAN bus, comprise the DSP in core position, and this DSP is provided with I/O translation interface, CAN bus and A/D translation interface.DSP is connected with host computer by the CAN bus, and carries out data interaction by CAN bus and host computer.DSP also is communicated with local touch-screen and other subsystem data respectively by the CAN bus.Outside digital format input data isolate by input end the input end I/O translation interface that change-over circuit is input to DSP.The data that DSP processed send to output terminal isolation change-over circuit by output terminal I/O translation interface, then send to power amplifier and peripheral control.Outside analog format input data send to the A/D translation interface of DSP by signal conditioning circuit.The application's supervisory system also comprises interlock protection; this interlock protection is accepted the signal from input end isolation change-over circuit, signal conditioning circuit and other subsystem; after the comprehensive judgement of interlock protection, interlock protection sends gating signal to output terminal isolation change-over circuit.

Native system can be realized data acquisition and the function of communicating by letter and showing, each operational factor by vibration experiment, as each guard mode of the output voltage of power amplifier, output current, other peripherals etc., show with forms such as numeral, duty, course curves on computers after gathering, processing, be convenient to the test operation personnel monitored; By computing machine, undertaken carrying out control operation to power amplifier and other peripherals simultaneously, mainly comprise equipment startup, stop, the action such as parameter arranges.

Upper computer software is also wanted can the historical data collected be adjusted back, and historical data can also be compared and analyze; And, according to the variation of trystate, make corresponding prompting.

The vibration experiment formed for multi shaker, on a monitoring interface, can realize the running status centralized displaying of each subsystem each subsystem is concentrated to monitoring; Concentrate sending controling instruction, realize the synchronization action (as the synchro control of synchronous startup, close synchronously and gain) of each subsystem; Can also realize the interlock protection between each subsystem simultaneously.

Claims

1. the vibration test supervisory system based on the CAN bus, it is characterized in that: comprise the DSP in core position, this DSP is provided with the I/O translation interface, CAN bus and A/D translation interface, DSP is connected with host computer by the CAN bus, and carry out data interaction by CAN bus and host computer, DSP also is communicated with local touch-screen and other subsystem data respectively by the CAN bus, outside digital format input data isolate by input end the input end I/O translation interface that change-over circuit is input to DSP, the data that DSP processed send to output terminal isolation change-over circuit by output terminal I/O translation interface, then send to power amplifier and peripheral control, outside analog format input data send to the A/D translation interface of DSP by signal conditioning circuit.

2. a kind of vibration test supervisory system based on the CAN bus as claimed in claim 1; it is characterized in that: this supervisory system also comprises interlock protection; this interlock protection is accepted the signal from input end isolation change-over circuit, signal conditioning circuit and other subsystem; after the comprehensive judgement of interlock protection, interlock protection sends gating signal to output terminal isolation change-over circuit.