Intelligent measurement control system
A technology of measurement control and deformation monitoring, which is applied in the field of multi-microcomputer distributed measurement control system, can solve the problems of lack of instrument control function, long-term transmission interference, unstable measurement data, etc., and achieve the effect of friendly man-machine interface
Inactive Publication Date: 2010-09-08
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION +1
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Problems solved by technology
The system still has the following deficiencies: first, it only has data acquisition function, and lacks instrument control functions, such as instrument (sensor) self-test, etc.; second, there are many types of instruments (sensors), ranging from instruments (sensors) to measurement Although the transmission is only a pulse digital (count, frequency) or analog (voltage, current) signal, the measurement range is at least a few hundred meters of straight-line distance, and the control area range is about 1 square kilometer
Due to the large area and the different environments, the interference of long-line transmission is relatively large, which leads to unstable measurement data, especially for analog signals.
The third is that the controlled instruments (sensors) are designed and produced by different manufacturers, and the reference earth zero potential of the instruments (sensors) themselves or their installation locations is not necessarily the same, or due to the difference in transmission distance between the instrument (sensor) and the measurement digital device Causes zero potential difference, resulting in poor reliability of monitoring data
Method used
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Embodiment approach
[0033] According to attached figure 1 Illustrate the embodiment of the present invention as follows:
[0034] The signal (1) of the sensor or instrument is sent to the measurement control module (3) through the output and input adapter (2); the measurement control module (3) reads the signal and stores it; when it needs to be controlled, the measurement control module (3) outputs the control signal (4) Send it to the corresponding sensor or instrument through the output-input adapter (2). The measurement control module (3) receives commands from the main control computer (6) and sends data through the RS485 bus (5). The RS485 bus is directly connected with the serial port of a PC, an industrial computer or a portable computer of the system main control machine (6) with an RS485 / 232 converter.
[0035] The power supply of the measurement control module (3) is provided by a power supply module (7), a storage battery (8) or 220V of commercial power, and there are three kinds of...
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The invention provides a multi-microcomputer distribution-type intelligent measurement control system which is applicable to the engineering deformation monitoring and the automatic recording of geophysical apparatus. An industrial personal computer or a PC which is used as a main controller is connected with a measurement control unit (MCU) which is arranged in front through an RS485 bus so as to transmit orders and to receive data. Each MCU can be provided with one measurement control module. Different instruments of different measuring ways or different sensors with different physical quantity outputs adopt different measurement modules, and a main system can be connected with more than 250 modules. The MCU can be separated from the main controller to independently do the work such as the timely data collection, data storage and the like, and the MCU is provided with a backup battery, so the MCU has a power-failure protection function. The MCU is of a complete data collection system and is particularly applicable to the unattended fields.
Description
technical field [0001] The invention relates to a multi-microcomputer distributed measurement control system applied to engineering deformation monitoring and automatic recording of geophysical instruments. [0002] Specifically, the industrial computer or PC is used as the main control machine, which is connected with the measurement control unit (MCU) in the front through the RS485 bus to send commands and receive data. Each MCU can install a measurement control module. Instruments with different measurement methods or sensors with different physical quantity outputs use different measurement modules, and the total system can connect up to 250 modules. The MCU can independently perform timing data collection and data storage without the main control machine, and is equipped with a backup battery with power-off protection function. MCU itself is a complete data acquisition system, especially suitable for unattended occasions. Background technique [0003] Safety monitori...
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Login to View More IPC IPC(8): G05B19/418G01D9/00
CPCY02P90/02
Inventor 李树德马能武陈志遥裴灼炎李明刘德军李欣赵全麟吴涛李双平
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION