Combination ball valves can be customized
Pneumatic valves intelligent display control method based on single chip microcomputer development
by：AIRWOLF
2021-01-15
In actual industrial raw often and industrial control, intelligent display control method based on single chip microcomputer development is controlled by pneumatic actuators is relatively commonly used.
smart display is used to monitor the valve working condition, and control the valve opening work of the instrument, it through two lines of position sensor to monitor the working state of the valve, the valve is in open valve or valve state, through programming records of valve switch Numbers, there are two road and valve opening and the corresponding 4 ~ 20 ma output and bipedal normally open normally closed contacts. According to the requirement of the system, the intelligent valve display from the hardware can be divided into three parts to design: analog parts, part Numbers, button/show.
analog circuit part mainly includes power supply, analog input circuit, analog output circuit three parts. The power part of energy supply of the whole circuit, analog input signal by A/D conversion into corresponding to the valve opening after digital signal to digital part of the single chip microcomputer, after filtering processing on it in SCM can output. Valve opening information through D/A converted into analog signal output, is used to pick up the display shows the valve opening or connect to other control equipment.
digital circuit part mainly includes: single chip microcomputer, power-fail protection, two monitoring pulse input signal, two normally open normally closed switch contact output. In power system off or reboot, need to keep some previously set in the instrument valve parameters, and the data memory in the MCU doesn't have electricity storage function, so in the slice extends outside with a power save function of X5045 chip. When the system sends failure more than set time in the circuit X5045 will be reaction through the RESET signal to CPU.
display part mainly includes: single chip microcomputer, four LED display, three status indicators ( Automatic, forward and reverse) , three buttons ( MODE/SET key, the key, the key) 。 Display part adopts AT89C4051 single-chip microcomputer to control four LED display, and communication with digital part of the single chip microcomputer, and the choice of mode of control instrument and control. Display design with three status indicators used to display the state of the actuator: forward, reverse, automatic; Three keys: MODE/SET key, the key, the key to control the operation MODE of the actuator and some initialization parameter. This three points through interface connection, form a complete control system, some such as pneumatic motor actuator can be controlled. Basically achieved in actual application requirements of various performance indicators in advance.
this paper by: pneumatic actuator original, reproduced please indicate the source of this article http://www. thank you
smart display is used to monitor the valve working condition, and control the valve opening work of the instrument, it through two lines of position sensor to monitor the working state of the valve, the valve is in open valve or valve state, through programming records of valve switch Numbers, there are two road and valve opening and the corresponding 4 ~ 20 ma output and bipedal normally open normally closed contacts. According to the requirement of the system, the intelligent valve display from the hardware can be divided into three parts to design: analog parts, part Numbers, button/show.
analog circuit part mainly includes power supply, analog input circuit, analog output circuit three parts. The power part of energy supply of the whole circuit, analog input signal by A/D conversion into corresponding to the valve opening after digital signal to digital part of the single chip microcomputer, after filtering processing on it in SCM can output. Valve opening information through D/A converted into analog signal output, is used to pick up the display shows the valve opening or connect to other control equipment.
digital circuit part mainly includes: single chip microcomputer, power-fail protection, two monitoring pulse input signal, two normally open normally closed switch contact output. In power system off or reboot, need to keep some previously set in the instrument valve parameters, and the data memory in the MCU doesn't have electricity storage function, so in the slice extends outside with a power save function of X5045 chip. When the system sends failure more than set time in the circuit X5045 will be reaction through the RESET signal to CPU.
display part mainly includes: single chip microcomputer, four LED display, three status indicators ( Automatic, forward and reverse) , three buttons ( MODE/SET key, the key, the key) 。 Display part adopts AT89C4051 single-chip microcomputer to control four LED display, and communication with digital part of the single chip microcomputer, and the choice of mode of control instrument and control. Display design with three status indicators used to display the state of the actuator: forward, reverse, automatic; Three keys: MODE/SET key, the key, the key to control the operation MODE of the actuator and some initialization parameter. This three points through interface connection, form a complete control system, some such as pneumatic motor actuator can be controlled. Basically achieved in actual application requirements of various performance indicators in advance.
this paper by: pneumatic actuator original, reproduced please indicate the source of this article http://www. thank you
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