RU99877U1 - COMPLEX FOR DIAGNOSTIC OF THE SAFETY CONTROL AND DISABLING MODULE (MBCO) - Google Patents

Abstract

 A complex for diagnosing a safe control and shutdown module (MBCO), containing a data processing unit, a control object, a multiplexer, a control unit, characterized in that an indication unit is additionally introduced, the input of which is connected to the output of the data processing unit based on a single-chip microcomputer , the control unit is connected to the input of the information processing unit, while the control unit is made in the form of a set of function keys for controlling testing, and the diagnostic objects - MBCO modules - are installed on eight workplaces and are connected through a multiplexer to a signal processing unit.

Description

The utility model relates to railway automation and computer technology, namely, to the measurement and control of block parameters in electrical centralization (EC) systems, including in the control computer complex of the UVK RA microprocessor-based centralization of switches and signals designed for small, medium and major railway stations.

A device is known that includes a control unit with manual switching of the signal to the individual circuits of the EC unit, indicators in the form of series-connected indicator circuits, measuring devices, usually dial, for measuring electrical parameters and time, stopwatch, as well as a test program in the form of a written sequence of operator actions in the process of measurements (Dmitrienko I.E. et al. Measurements and diagnostics in systems of railway automation, telemechanics and communications. M. / Transport, 1986, pp. 103-105).

The disadvantage of this device is that the verification takes an unreasonably long time (about 120 minutes per block), which affects the operator’s productivity, there are significant measurement errors, and subjectivity in evaluating the measurement results is not ruled out.

It is also known "Device for automatic health monitoring of electrical centralization (EC) units" (patent for invention of the Russian Federation No. 2145734 G08B 23/00, G01R 19/25, prior. 01.09.1998, publ., 02.20.2000.). The invention relates to devices for railway automation and telemechanics, namely, to the measurement and control of parameters of electric centralization units (EC). The technical result is to increase the accuracy and reliability of measurement and control of parameters of EC blocks. The technical result is achieved due to the fact that the device contains a computer, an analog-to-digital converter, an amplifier-coordinator, a multi-channel switch, an interface, a register of a measurement circuit, an analog switch, a power amplifier, a decoder, a register of a control circuit, a digital-to-analog converter, and an electrical centralization unit.

However, this device has insufficient performance of the measurement process, as well as insufficient functionality associated with the need to perform automated functional control of microprocessor units of electrical centralization. There is also no hardware-software method for diagnosing individual EC modules, in particular the MBCO module, which leads to an increase in the time for troubleshooting in the control system and can lead to the accumulation of malfunctions.

It is also known "Device for monitoring signal parameters" (patent for utility model of the Russian Federation No. 72079, G01R 31/28, prior. 08/20/2007, publ. March 27, 2008), intended for use in commissioning at railway automation facilities and at search for malfunctions that arose during the operation of microprocessor-based systems of electrical centralization. The device includes a control microcontroller, a power supply, an input device, an additional signal processing unit, a mode selection device, an indication panel, and a control device. The power supply is made in the form of batteries. The inputs of the signal processing unit are connected to the outputs of the input device, the mode selection device and the power control device, and its output is connected to the input of the display panel. The output of the power elements is connected to the input of the power control device. Due to the construction of the device circuit, it becomes possible to determine the parameters of the direction signals, to detect signal short circuits among themselves, on the cable connectors and directly on the relay contacts of the relay cabinets, as well as measure the voltage of the signal modules of the output amplifiers (MVS) and information collection modules (MCI). It also becomes possible to carry out reliable control without disrupting the operability of the test object itself, as well as speeding up the verification process by using the non-destructive testing method and the ability to quickly reprogram the device when changing the parameters of the studied signals.

However, this device has insufficient functionality associated with the need to perform automated functional control of microprocessor units of EC., For example, the MBCO module.

The closest in technical essence and the achieved effect to the claimed utility model is the "Complex express diagnostics of multi-channel digital blocks" (patent for the invention of the Russian Federation No. RU 2141686, G06F 11/26, G01R 31/28, prior. 01.07.1997, publ. 20.11 .1999). The invention relates to automation and computer technology and can be used to monitor the health of digital blocks and circuits, search and localize faults in them both during adjustment and during operation. The technical result is to increase the efficiency of failure diagnostics due to information about failures based on the results of a full inspection of the facility. The technical result is achieved due to the fact that the device contains a data processing unit, a code generator, a multiplexer, a control unit, a signature shaper, a frequency shaper, an action synthesizer, a test generator, an image generator.

However, this complex does not allow the use in the EC system, as well as for the diagnosis of MBCO, as devices with specific functions and complex analog and digital circuitry, and to measure all output parameters of the MBCO with the required accuracy.

The task to which the claimed utility model is directed is to expand the functionality of express-diagnostic complexes, as well as increase economic efficiency and reduce operating costs by increasing the efficiency of diagnostics and assessing the status of MBCOs, as well as in automating the process of determining whether MBCO technical characteristics meet the required values during manufacture and during use.

The technical result that can be obtained using the utility model is to increase the efficiency of monitoring the health of electronic modules, increase the reliability of control, speed up the verification process by increasing the number of tested modules to eight, as well as the possibility of localizing faults in a failed module, which increases maintainability of MBCO modules.

The problem is solved due to the fact that in the complex for diagnostics of the safe control and shutdown module (MBCO), which contains a data processing unit, a control object, a multiplexer, a control unit, an indication unit is additionally introduced, the input of which is connected to the output of the data processing unit built on based on a single-chip microcomputer, the control unit is connected to the input of the information processing unit, while the control unit is made in the form of a set of function keys for controlling testing, and the control objects of MBK modules О installed at eight workstations and connected through a multiplexer to the signal processing unit.

The complex for diagnostics of the Safe Control and Shutdown Module (MBCO) is built on the basis of a single-chip microcomputer with built-in analog-to-digital conversion devices. A single-chip microcomputer is the basis of the processing unit. In her memory are all the testing algorithms for the MBCO module and the algorithms that ensure the operation of the display unit, multiplexer and control unit. Control objects are installed in the amount of eight jobs.

Thus, increasing the efficiency and reliability of monitoring the health of the MBCO module, accelerating the diagnostic process is achieved by using new elements and new connections in the device circuit.

The essence of the utility model is illustrated by drawings. Figure 1 presents the structural diagram of the inventive device.

The complex includes the following blocks, elements:

processing unit - 1;

display unit - 2;

control unit - 3;

MBCO modules - 4;

multiplexer - 5.

The basis of the complex is the processing unit - 1. It is a digital computing device, in the memory of which algorithms for testing MBCO 4 modules are stored, as well as algorithms for working with the display unit - 2 and the control unit - 3.

Indication unit - 2 is a multifunctional liquid crystal display, on the screen of which all service menus and information on the tested MBCO - 4 modules are displayed. Control unit - 3 contains a set of function keys with which the operator can select the necessary test program. Information about the tested MBCO 4 processing unit 1 receives through the multiplexer - 5. Also, through the multiplexer 5 from the processing unit 1 the signals necessary for the functioning of MBCO 4 are supplied. Signals are given in accordance with the testing algorithm.

The installation locations of the tested MBCO-4 modules are eight in number.

Structurally, this device is implemented as a stand for the diagnosis and control of MBCO-4 and is a hardware-software testing device. This complex is capable of simultaneously checking up to eight MBKO-4 modules in manual or automatic modes. The test time for eight modules in automatic mode does not exceed 1 min. A manual check is the generation of 4 signals necessary for the operation of MBCO - according to the operator’s commands, and control of its output parameters presented on the multifunction indicator of the display unit - 2.

The main element of the entire complex is a single-chip control microcomputer of processing unit 1, which directly performs the MBCO-4 testing algorithm, control and indication functions. The MBCO - 4 testing algorithm, embedded in the memory of the microcomputer of processing unit 1, is based on an in-depth analysis of circuit diagrams and the experience of testing and repairing modules of this type. This allows you to automatically locate the malfunction of MBCO - 4 with an accuracy to the functional unit.

Specifically, the role of a single-chip microcomputer of control unit 1 in the device is played by the programmable microcontroller PIC18F8627, which, using the appropriate software (software), provides the ability to conduct a health test of the MBCO 4 module.

The MBCO 4 module is one of the key modules of the control computer complex (UVK) of railway automation. It is a fault-tolerant and fail-safe device that allows guaranteed, with a high degree of reliability to disconnect the supply voltage from the output control keys of the UVK. This ensures that there are no false positives in the system. The logic of the MBCO 4 module is designed so that it generates an output voltage only for a time equal to the period of its synchronization through three channels from the system processors. The synchronization signals are pulse sequences with a period of 37 ms. or 48 ms, depending on version.

Thus, the MBCO 4 module is a specialized power source for the output stages of the output amplifier modules (MVU). MBCO 4 supports the power supply voltage of the output stages of the MVU at a level of 17 to 30 V only if its signals are supplied from the outputs of the MVU. These signals are in the form of pulse sequences with a pulse repetition period not exceeding 48 ms. Impulse sequences are generated by the IDP according to the instructions received from the SBS.

Due to the fact that the MBCO 4 modules are a serial product, their testing and control of operating parameters during production seems to be an urgent task.

Testing is carried out as follows. The studied signal of the MBCO 4 module in the form of voltage is fed through the multiplexer 5 to the analog-to-digital conversion circuit of processing unit 1, which is built into the microcomputer, where it is digitally represented. Further, it is digitally processed by the processor according to the corresponding program. As a result of processing to measure the amplitude of the signal, the relative level of the ripple and the ripple period, the microprocessor generates information about the nature of the malfunction and the possible source of the malfunction. This information in the form of corresponding digital codes is fed to display unit 2, which ensures its convenient presentation to the operator. MBCO 4 testing can be performed in several modes: in automatic, in manual and in cyclic mode, where the test program is repeated within 24 hours. The choice of the mode of measured testing is carried out by software and hardware. To perform this task, the functions of interrupting the micro-computer processing unit 1 are involved.

The inventive utility model can be used to control the functioning of electronic modules. EFFECT: increased efficiency of performance monitoring.

The complex for diagnostics of modules is a hardware-software device designed to test the health of MBCO 4 modules, which are one of the most numerous in the manufactured equipment for EC.

The use of the proposed complex makes it possible to exclude manual testing of MBCO 4 modules. This will speed up the process of checking them and contribute to the transition to a qualitatively new level of functional control of the equipment manufactured using modern technologies.

Thus, the positive effect of using the utility model is to provide the possibility of creating on the basis of this complex compact automated workstations for monitoring, diagnosing malfunctioning of modules, EC blocks, providing high accuracy of monitoring and diagnosing malfunctioning blocks.

Claims (1)

A complex for diagnosing a safe control and shutdown module (MBCO), containing a data processing unit, a control object, a multiplexer, a control unit, characterized in that an indication unit is additionally introduced, the input of which is connected to the output of the data processing unit based on a single-chip microcomputer , the control unit is connected to the input of the information processing unit, while the control unit is made in the form of a set of function keys for controlling testing, and the diagnostic objects - MBCO modules - are installed on eight workplaces and are connected through a multiplexer to a signal processing unit.