CN203720302U

CN203720302U - Signal cable automatic detection system

Info

Publication number: CN203720302U
Application number: CN201420083689.4U
Authority: CN
Inventors: 周利军
Original assignee: SHANGHAI FINEPOWER TECHNOLOGY Co Ltd
Current assignee: Wuhu finepower Technology Co., Ltd.
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2014-07-16
Anticipated expiration: 2024-02-26

Abstract

The utility model discloses a signal cable automatic detection system which includes a PC, an RS232 interface, an RS232 to RS485 module, an A/D conversion module, DAM3060V analog quantity output modules, a DAM 3055 analog quantity input module, a D/A conversion module, a 24V low-voltage power-supply module, an RS232 bus, an RS485 bus, a signal lead-out line, a signal receiving line and a to-be-detected signal cable. A low-voltage power supply needed by the system is provided by the 24V low-voltage power-supply module. The 24V low-voltage power-supply module is connected with the A/D conversion module and the D/A conversion module. Compared with the prior art, the signal cable automatic detection system has the advantages that the system is capable of rapidly and accurately finding out errors of cable wiring and ensuring operation of an electrical servo system; and the signal cable automatic detection system is high in testing accuracy, high in efficiency, reliable in operation, convenient to set up, convenient to debug and simple to operate.

Description

A kind of signal cable automatic checkout system

Technical field

The utility model relates to Cable Testing System, relates in particular to a kind of signal cable automatic checkout system.

Background technology

Along with the development of modern industrial technology, the exploitation of electric servo system has not only improved with utilization the production efficiency of manufacturing industry greatly, also the various aspects of electric servo system is had higher requirement simultaneously.Electric servo system is as a kind of feedback control system that is used for accurately following or reappearing certain process, and the output mechanical shift that its effect has been, follows the tracks of the displacement of input accurately.Meanwhile, the structure of electric servo system forms with other forms of feedback control system does not have difference in principle.

As a complete control system, the feedback of signal plays the effect of crucial property undoubtedly with output, and the element that carries these signals is exactly cable.The quality of cable and the correctness of cable connection have directly determined that can whole system work normally.If can detect cable before dispatching from the factory, and after going wrong, can find timely reason and effectively solve, will provide safeguard for the normal operation of electric servo system.

The servo cable of electricity comprises signal cable and feed cable, correct and the standard of wiring will directly have influence on that can whole electricity is servo normally work, and the wiring that cable is made part is often by manually completing, easily there is mistake, and in artificial line inspection process, need to find wiring definition figure, find suitable probe, each interface of a pair of signal cable carries out the process of short-circuit test with multimeter, line inspection efficiency is extremely low; And ND mistake.

Summary of the invention

The utility model, in order to solve the above-mentioned deficiency of prior art, provides a kind of signal cable automatic checkout system.

Above-mentioned purpose of the present utility model realizes by following technical scheme: a kind of signal cable automatic checkout system, is characterized in that: comprise that PC, RS232 interface, RS232 turn RS485 module, A/D modular converter, DAM3060V analog output module, DAM3055 analog input module, D/A modular converter, 24V low-tension supply module, RS232 bus, RS485 bus, signal extension line, signal reception line and measured signal cable; The required low-tension supply of system is provided by 24V low-tension supply module, and described 24V low-tension supply module connects A/D modular converter and D/A modular converter; After the RS232 interface of described PC is turned RS485 module and is connected by RS232 bus and RS232, by RS485 bus, after A/D modular converter, be connected to again DAM3060V analog output module, through signal extension line, be connected to measured signal cable, the other end of measured signal cable receives line with signal and is connected, signal receives line and is connected to DAM3055 analog input module, after DAM3055 analog input module is connected with D/A modular converter, by RS485 bus, after RS232 turns RS485 module, by RS232 interface, be connected to PC.

The utility model advantage is compared with prior art: system of the present utility model can be found the mistake of cable connection fast and accurately, guarantees the operation of electric servo system; Test accuracy is high, efficiency is high, reliable; Build convenience, debugging convenience, simple to operate.

Specifically comprise following advantage:

1, can meet the automatic detection to the signal cable of different definition by update software signal cable database.

2, remove from artificial line inspection process, find wiring definition figure, find suitable probe, each interface of a pair of signal cable carries out the process of short-circuit test with multimeter, improved line inspection efficiency.

3, provide multi-signal extension line and signal to receive line for the detection of unlike signal cable, in testing process without loaded down with trivial details wiring.

4, can outputting analog signal, contrast receives and signal output waveform, can further judge transmittability and the mistake of signal cable, for example: whether ground connection whether, exist the artificial ND mistakes of the line inspection such as screen layer breakage.

5, automatic generation error information, intuitively understands the problem that cable exists.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, a signal cable automatic checkout system, it comprises that PC (A1), RS232 interface (A2), RS232 turn RS485 module (A3), A/D modular converter (A4), DAM3060V analog output module (A5), DAM3055 analog input module (A6), D/A modular converter (A7), 24V low-tension supply module (B1), RS232 bus (C1), RS485 bus (C2), signal extension line (C3), signal reception line (C4) and measured signal cable (C5); The required low-tension supply of system is provided by 24V low-tension supply module (B1), and described 24V low-tension supply module (B1) connects A/D modular converter (A4) and D/A modular converter (A7);

The transmission of signal with send RS232 interface (A2) by PC (A1) and turn RS485 module (A3) and be connected by RS232 bus (C1) and RS232 after, by RS485 bus (C2), after A/D modular converter (A4), be connected to again DAM3060V analog output module (A5), through signal extension line (C3), be connected to measured signal cable (C5), the other end of measured signal cable (C5) receives line with signal and is connected (C4), signal receives line (C4) and is connected to DAM3055 analog input module (A6), after DAM3055 analog input module (A6) is connected with D/A modular converter (A7), by RS485 bus (C2) after RS232 turns RS485 module (A3), by RS232 interface (A2), be connected to PC (A1).

The testing process of native system: upper by labview software programming at PC (A1), by testing software, controlled the execution of whole detection system.By operating personnel, connected after cable under test (C5), a key starts test macro.By PC (A1), send signal and by RS232 interface (A2), after RS232 turns RS485 module (A3), be sent to A/D modular converter (A4), signal gives DAM3060V analog output module (A5) Shi16 road signal whole outputting analog signals after A/D modular converter (A4) conversion, simulating signal is after signal extension line (C3) enters measured signal cable (C5), from the other end of measured signal cable (C5), be sent to DAM3055 analog input module (A6), after D/A modular converter (A7), signal is passed through to RS485 bus (C2), RS232 turns RS485 module (A3), RS232 bus (C1) loopback is to PC (A1), PC (A1) judges type (resolving encoder signal wire under this signal wire after the channel number of signal and signal wire definition database by receiving, ENDAT code device signal line, SICK code device signal line etc.).After having judged, the choosing passage that this signal wire is used carries out output signal and reception one by one, by sending and the connection that receives each circuit of judgement signal wire of signal, there is wrong automatically from error library, choose corresponding error message and the automatic generation error report of the channel number that reports an error, otherwise cable is normal, detects and finish.

Above-mentioned embodiment is exemplary, is to be this patent to be comprised to the restriction of scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses do be anyly equal to change or modify, all fall into the scope that this patent comprises.

Claims

1. a signal cable automatic checkout system, is characterized in that: comprise that PC, RS232 interface, RS232 turn RS485 module, A/D modular converter, DAM3060V analog output module, DAM3055 analog input module, D/A modular converter, 24V low-tension supply module, RS232 bus, RS485 bus, signal extension line, signal reception line and measured signal cable; The required low-tension supply of system is provided by 24V low-tension supply module, and described 24V low-tension supply module connects A/D modular converter and D/A modular converter; After the RS232 interface of described PC is turned RS485 module and is connected by RS232 bus and RS232, by RS485 bus, after A/D modular converter, be connected to again DAM3060V analog output module, through signal extension line, be connected to measured signal cable, the other end of measured signal cable receives line with signal and is connected, signal receives line and is connected to DAM3055 analog input module, after DAM3055 analog input module is connected with D/A modular converter, by RS485 bus, after RS232 turns RS485 module, by RS232 interface, be connected to PC.