CN2524291Y - Rapid breakdown test devices for automatic computer measure and control system - Google Patents

Abstract

The utility model relates to a CAMAC system quick failure detecting device. The utility model is characterized in that the utility model comprises a failure detecting connector and a detecting computer system; the failure detecting connector comprises a number input plate, a multi circuit switch converting plate, a signal power circuit, an equal load circuit and a relay plate; the detecting content comprises the machine box detecting and the system detecting; the utility model can detect the device completely and can accurately position the failure on the inserting component and unit circuit; the utility model is convenient to be adjusted and repaired, has a wide failure detecting range, a high automation degree, a compact structure, a small volume and a light weight, is convenient to be carried and can bring convenience to the scene repairing.

Description

A kind of computer automatic analysis and control system quick fault testing device

Technical field

The utility model belongs to computer automatic analysis and control technology field, relates to the quick fault testing device of a kind of computer automatic analysis and control system.

Background technology

Computer automatic analysis and control system are called for short CAMAC (Computer automatic measureand control) system, are to be that based computer is measured and the general name of control system automatically with general-purpose CAMAC standard in the world.The CAMAC system architecture is huge, and the model of feature card is assorted, kind is many, the universalization standardization is poor, and mimic channel and digital circuit are mixed in the circuit, the signal relation complexity.Make the reliability of this system low, maintenanceability is poor.In case break down, analyze eliminating by analyzing electrical schematic diagram, even the designer neither a gravy jobs, the thing of a difficulty especially concerning the user of service.Just because of these reasons, many CAMAC systems are in paralyzed state.This is not only the singularity because of the CAMAC system, and the limitation of method for diagnosing faults also is the major reason that influences this field.At present, to the fault detect of CAMAC system, independent debugging detection device at indivedual plug-in units is arranged in development and production division.But the detection of crate controller (CCU) do not seen as yet relate to, blank especially to the detection of system.

Summary of the invention

At above-mentioned present situation, the purpose of this utility model is to provide a kind of portable quick fault testing device of developing according to the singularity of CAMAC system.

The utility model basic thought (see figure 1) is with after Interface and Controler (JK-1) separate with the mainframe box in the CAMAC system, be connected to and detect on interface box and the detection computations machine, utilize the work of computer control CAMAC mainframe box, and produce various pumping signals to the CAMAC plug-in unit by detecting interface box, gather the output response of CAMAC plug-in unit and the CAMAC data that crate controller is sent back to.Carry out forward reasoning according to analysis and use experience to the CAMAC system principle, the method that adopts input/output test to combine with fault diagnosis reasoning based on knowledge, must be out of order and phenomenon between logical relation and array mode thereof, thereby form modular knowledge base, solve the problem of CAMAC system (comprising CCU) fault detect, detection comprises the fault detect of self detecting of CAMAC mainframe box data road and CAMAC system all functions plug-in unit.The database sub-module that utilizes detection to obtain carries out backward reasoning, and fault dictionary is mated, and realizes failure location.

This fault detection system block diagram is seen Fig. 2.Dotted line is divided into three parts with this fault detection system among the figure, I partly is detected CAMAC system, II is partly for detecting interface box, III partly is a detection computations machine system, the detection computations machine III of system comprises PC bus industrial computer (5), it is characterized in that: this failure detector is made up of fault detect interface box II and the detection computations machine III of system; Fault detect interface box II comprises digital quantity tablet (3), multi-way switch change-over panel (2), signal source circuit and equivalent load circuit (1), relay board (4) composition; Signal source circuit and equivalent load circuit (1) connect interface controller (JK-1) and the CAMAC mainframe box in the detected CAMAC system, wherein are equipped with in signal source circuit and the equivalent load circuit (1) in order to constitute test loop, integrated circuit 54LS05, the precision resistance of equivalent load are provided; Multi-way switch change-over panel (2) receives the signal of I/OPCL-722 in interface controller (JK-1), CAMAC mainframe box and the detection computations machine system in the detected CAMAC system, and exports signal to A/DPCL-814; Digital quantity tablet (3) receives detected CAMAC mainframe box signal, and exports signal to I/oPCL-722 in the detection computations machine system and the interface controller (JK-1) in the detected CAMAC system; Relay board (4) receives detected CAMAC mainframe box and the I/oPCL-722 signal in the detection computations machine system, and exports signal in the detected CAMAC system interface controller (JK-1); In the vacant station of mainframe box of the detected CAMAC system of I part, crate controller is housed detects plug-in unit (CCU-FD), join by 86 core slots and CAMAC system data road; Crate controller in the CAMAC system (CCU-2-80) is accepted the control of PCBUS-DRV in the detection computations machine system.

Description of drawings

Fig. 1: the utility model is conceived theory diagram substantially

Fig. 2: the utility model failure detector composition frame chart

Fig. 3: detect plug-in unit CCU-FD with crate controller and carry out cabinet detection synoptic diagram

Fig. 4: with switching value output inserter DO (c) is system's detection synoptic diagram of example

Fig. 5: crate controller detects plug-in unit CCU-FD circuit theory diagrams

Fig. 6: signal source circuit and equivalent load circuit theory diagrams

Wherein:

Among Fig. 1: I partly is that the detected II of CAMAC system partly is the PC bus industrial computer for detecting interface box (5)

Among Fig. 2: I is that the detected II of CAMAC system is that the detection computations machine JK-1 of system is that crate controller detection plug-in unit CCU-2-80 is that crate controller (1) signal source/equivalent load circuit (2) is that 14 road A/D plate PCL-722 are that 144 road I/O plate PCBUS-DRV are the PC bus driver for multi-way switch plate (3) for digital quantity tablet (4) relay board (5) PC bus industrial computer PCL-814 for interface controller CCU-FD for detecting interface box III

Among Fig. 3: DO (a), DO (b), DO (c) are that switching value input plug-in unit CJ is that high-speed sampling plug-in unit JP is that signal source plug-in unit A/D is that crate controller detection plug-in unit CCU-2-80 is a crate controller for touching number conversion plug-in unit CCU-FD for counting frequency measurement plug-in unit SS for measuring interface card HS for switching value output inserter DI

Among Fig. 4: DO (c) is that fault detect interface box (3) is that digital quantity tablet JK-1 is a sampling switch for interface controller SK for switching value output inserter II

Among Fig. 5: the Interface design that CCU-FD detects plug-in unit is the CAMAC card i/f of standard, and 86 core slots by standard link to each other with CAMAC data road.

Among Fig. 6: signal source/equivalent load circuit is for designing module voluntarily.Integrated circuit 54LS05, precision resistance are housed, in order to constitute test loop, equivalent load is provided on the signal source board.This circuit board is connected with CAMAC crate with interface controller respectively by interface box.

Embodiment

The utility model quick fault testing Device Testing content comprises that cabinet detects and system detects.

The cabinet testing goal is whether the function on detection CAMAC crate controller CCU-2-80 and data road is normal.Its course of work is: before the test, earlier the supporting CCU-FD of failure detector is detected the vacant station that plug-in unit inserts CAMAC crate.The Interface design that CCU-FD detects the plug-in unit circuit is the CAMAC card i/f of standard, and 86 core slots by standard link to each other with CAMAC data road.Its function is by crate controller CCU-2-80 CCU-FD to be detected plug-in unit by the detection computations machine to send test command, reads the function code, test data and the status signal that detect plug-in unit successively.Thereby the detection computations machine can judge whether the work of CCU and CAMAC crate data road is normal according to detecting information.Detect under the normal condition at cabinet, just can carry out system and detect.

The purpose that system detects is that CAMAC system all functions plug-in unit is carried out quick fault testing, comprises sequential testing and takes a sample test.Now the detection with switching value output inserter DO (c) is the course of work that example comes illustrative system to detect.At first, computing machine switch amount output inserter DO (c) sends out the CAMAC instruction, reads the X response from crate controller CCU-2-80 again.Then, send instruction, connect corresponding No. one relay among the switching value output inserter DO (c) on the one hand, export measured signal to fault detect interface box II by relay tip by computing machine; Connect the required circuit of test among the fault detect interface box II on the other hand, draw measurement point for measured signal provides.At last, computing machine reads metrical information by fault detect interface box II from drawing measurement point, and computing machine compares, analyzes, judges according to detecting information and standard value, provides conclusion.

CCU-FD in the CAMAC mainframe box detects the plug-in unit circuit, and its major function is by crate controller CCU-2-80 CCU-FD to be detected plug-in unit by the detection computations machine to send test command, reads the function code, test data and the status signal that detect plug-in unit successively.Detect the signal source/equivalent load circuit among the interface box II, its signal source part major function is to utilize the outside interchange 4.8KHZ signal that provides to produce the required full sized pules test signal of tested plug-in unit by relatively amplifying the back, and the relevant direct current signal that utilizes transformer to produce is simultaneously finished the detection to plug-in unit jointly; Its equivalent load part major function is the load characteristic that is used for equipment under test that is virtually reality like reality, can finish the collection that detects the plug-in unit desired signal by equivalent load.The PC bus industrial computer is the core of this device, and it is responsible for State Control, Data Receiving and sends, and the control of digital multimeter detects the processing of data, fault analysis reasoning diagnosis, and work such as the demonstration of testing result, preservation, printing.

Framed structure is adopted in the interface box design of the utility model quick fault testing device, front and back panel, upper and lower panel all can be opened, digital quantity tablet, relay board, multi-way switch change-over panel are general industry control module, debug easy to maintenance, compact conformation, volume is little in light weight, is easy to carry, and is convenient to scene rush to repair.This plant failure detects face width, the automaticity height, can intactly detect whole tested equipment, and exactly localization of fault is arrived plug-in unit or element circuit, whole testing process is all finished by computing machine, operating personnel only need select the mode that detects and answer some simple questions, have saved work such as manually looking into circuit diagram, analysis circuit principle, test circuit parameter, are ignorant of the CAMAC system principle and also can carry out fault detect.In addition, this device has also been realized fast detecting, can finish in one hour detected system and detect and the isolation location.

Claims (2)

1, the quick fault testing device of a kind of computer automatic analysis and control system has the PC bus industrial computer, it is characterized in that: be made up of fault detect interface box and detection computations machine system; The fault detect interface box comprises digital quantity tablet, multi-way switch change-over panel, signal source circuit and equivalent load circuit, relay board; Signal source circuit and equivalent load circuit connect the interface controller in the detected CAMAC system, and output signal to the CAMAC mainframe box; The multi-way switch change-over panel receives the signal of the I/OPCL-722 in Interface and Controler, mainframe box and the detection computations machine system in the detected CAMAC system, and exports signal in the detection computations machine system A/DPCL-814; The digital quantity tablet receives detected CAMAC mainframe box signal, and exports signal to I/oPCL-722 in the detection computations machine system and the interface controller in the detected CAMAC system; Relay board receives detected CAMAC mainframe box and the I/oPCL-722 signal in the detection computations machine system, and exports signal in the detected CAMAC system interface controller; Crate controller in the CAMAC system is accepted the control of PCBUS-DRV in the detection computations machine system.

2, the quick fault testing device of computer automatic analysis according to claim 1 and control system is characterized in that: be equipped with in signal source circuit and the equivalent load circuit in order to constitute test loop, integrated circuit 54LS05, the precision resistance of equivalent load are provided; In the vacant station of mainframe box of the detected CAMAC system of I part, crate controller is housed detects plug-in unit (CCU-FD), join by 86 core slots and CAMAC system data road.

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