RU2409852C2 - Method for digital recording and processing measured parametres systems for controlling, diagnosing and emergency protection of equipment - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention can be used as a component of systems for diagnosing technical and/or functional state of equipment based on synchronously measured slow-changing and fast-changing machine parametres in a working frequency range of 0-40000 Hz, automated information collection systems, systems for automatic control of machine systems, as well as independently. The method for digital recording and processing measured parametres of equipment is realised by using a program which enables to give the structure of an information stream with any number of fast- and slow-changing parametre channels, as well as with any frequency of occurrence of variable-length data used for transmitting PCI or USB interface.

EFFECT: possibility of using system equipment for diagnosing technical and functional state of equipment for measuring and recording any set of measured quantities, including fast- and slow-changing parametres.

Description

The invention relates to computing and information-measuring equipment and can be used as components of systems for diagnosing the technical and / or functional state of equipment using synchronously measured slow-changing (IMF) and fast-changing (BMP) machine parameters in the operating frequency range 0-40000 Hz, automated systems information collection, automatic control systems for machine complexes, as well as autonomously.

DESCRIPTION OF THE INVENTION

Almost all known diagnostic systems are based on digital signal processing methods that use the measurement data of technological parameters of machinery obtained using various sensors (temperature, pressure, flow, pressure pulsations, vibration displacement, vibration velocity, vibration acceleration, etc.). At the same time, a drawback of existing systems (patents RU 2218597 [6] C2, 10/12/2003; RU 2079882 [2] C1, 05.20.1997) is the presence of a rigid connection between the used hardware and software, which does not allow expansion of the composition during their operation and configurations of the adopted system for measuring controlled parameters, and hence adaptation to different types of equipment.

There is also known (RF patent No. 2295834 [1]) a method for providing a protected mode of operation of an integrated system with several software levels, namely that the system is initialized by decrypting the stored encrypted initialization code, and the decryption is performed using the access control tool available in the integrated system to the data, before transferring control of the integrated system to the next level software, the software of this is authenticated with the next level and limit the capabilities of the software of the next level for changing the operating characteristics of the integrated system, and this restriction is carried out by the specified means of access control to data implemented in hardware.

However, this method also does not provide the possibility of expanding the composition and configuration of the adopted system for measuring controlled parameters, and hence adaptation to different equipment sizes.

This, in turn, does not allow improving the applied diagnostic methods without a significant update of the hardware and software of the monitoring, diagnostics and emergency protection systems, which reduces the overall efficiency of their use.

The purpose of the invention is to develop a universal way of adapting almost any measuring system to the software of a digital parameter recorder (essentially, creating a software method for universalizing the equipment for digital recording of measured signals) without making changes to the source code of the interface programs. The application of the proposed adaptation method practically removes restrictions on the number of measuring channels and the structure of the received data stream in comparison with the known analogues, which allows using this equipment for measuring and recording any sets of measured values, including rapidly changing and slowly changing parameters, and accordingly makes it universal for any objects diagnosing.

The goal is achieved due to the configuration of the program, which provides the ability to set the structure of the information stream with any number of BMP and MMP channels, as well as with any frequency of occurrence of variable-length data using PCI or USB interfaces for transmission.

The proposed method includes the reception and registration of signals from an arbitrary number of measuring channels via PCI or USB interfaces and hardware switches with built-in input and output buffers of limited capacity and is characterized in that for each type of measuring equipment separate configuration files are created with a given frequency and length of transmitted data each channel in a logical cycle (the smallest non-repeating sequence of bytes containing measurement data), followed by downloading their stream measurement signals from different-speed logical channels of rapidly changing parameters (BMP) with the possibility of using one or more of them to transport data from many logical channels of slowly changing parameters (IMF) and setting bit masks for channels, information from which is transmitted using common fields (one, two, three or four bytes), and depending on the number of logical channels transporting data on one physical channel, the corresponding number of masks used logical multiplication operations to extract information about the measured parameter, the need for which is determined by the value of the corresponding channel descriptor, and if the descriptor value is 1, the parameter value is automatically determined using the mask, otherwise, a bit field is used to extract the measurement data from the binary stream , the length of which is set during the configuration of the program in accordance with the amount of information transmitted over this channel, excluding The procedure for reprogramming the data stream reception unit to transmit on a single channel of information for various purposes (e.g., vibration - 20 bits, temperature - 8 bits and the channel status - 4 bits).

The configuration of the program is carried out by setting the configurator - a file in which the parameters of the structure of the received frame are indicated (the number of measuring channels, the order of their sequence in the total stream, the number of bits transmitted by each physical channel, the number of logical channels using one physical channel and a measurement data alternation in the transmitted block).

The proposed method for digital recording and processing of measured parameters of machinery is carried out as follows: rebuilding the hardware-software complex of the monitoring, diagnostics and emergency protection system when switching from working with one type of objects to working with another type is performed by creating and then loading a new configuration file , which indicates the structure parameters of the received frame (the number of measuring channels, the order of their sequence in the total stream, the number of bits transmitted x each physical channel, the number of logical channels using one physical channel and the alternation circuit of measurement data in the transmitted block). After loading this configuration file with a given frequency and length of the transmitted data for each channel in a logical cycle (the smallest non-repeating sequence of bytes containing measurement data), they are loaded by streams of measurement signals from different-speed logical channels of rapidly changing parameters with the possibility of using one or more of them for transporting data from many logical channels of slowly varying parameters and setting bit masks for channels.

Information from these channels is transmitted using common fields (one, two, three or four bytes), and depending on the number of logical channels transporting data on one physical channel, the corresponding number of masks is used that are used in the logical multiplication operation to extract information about the measured parameter, the necessity of which is determined by the value of the corresponding channel descriptor.

Moreover, if the descriptor value is 1, then the parameter value is automatically determined using the mask, otherwise, a bit field is used to extract the measurement data from the binary stream, the length of which is set during the program configuration in accordance with the amount of information transmitted through this channel.

In this case, the procedure of reprogramming the data stream receiving modules with the possibility of transmitting information for various purposes on one channel (for example, vibration - 20 bits, temperature - 8 bits and channel status - 4 bits) is excluded, which ensures adaptation of any measuring system to the software of the digital parameter recorder .

In this case, almost all restrictions on the number of channels and the structure of the received data stream are removed in comparison with the known analogues [1-3].

Information sources

1. Patent RU 2295834.

2. Patent RU 2066473.

3. Patent RU 2079882.

4. US patent 7210105.

5. Patent RU 2036435.

6. Patent RU 2218597.

Claims (1)

A method of digital registration and processing of measured parameters of machinery, including the reception and registration of signals from an arbitrary number of measuring channels via PCI or USB interfaces and hardware switches with built-in input and output buffers of limited capacity, characterized in that separate configuration files are generated for each type of measuring equipment with a given frequency and length of transmitted data on each channel in a logical cycle (the smallest non-repeating one in a row bytes containing measurement data), followed by loading by the streams of measurement signals from different-speed logical channels of rapidly changing parameters with the possibility of using one or more of them to transport data from many logical channels of slow-changing parameters and setting bit masks for channels from which information is transmitted from using common fields (one, two, three or four bytes), and depending on the number of logical channels that transport data over one physical the channel, the corresponding number of masks is used, which are used in the logical multiplication operation to extract information about the measured parameter, the need for which is determined by the value of the corresponding channel descriptor, and if the descriptor value is 1, the parameter value is automatically determined using the mask, otherwise case, to extract measurement data from a binary stream, a bit field is used, the length of which is set during the program configuration in accordance with the volume information transmitted on this channel, excluding the procedure of reprogramming the data stream receiving modules with the possibility of transmitting information for various purposes on one channel (for example, vibration - 20 bits, temperature - 8 bits and channel status - 4 bits).