Embedded proportional controller
A proportional controller, embedded technology, applied in the field of hydraulic control, can solve the problems of inconvenient operation and adjustment, unreadable data, single control function, etc. Effect
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Embodiment 1
[0019] see figure 1 and Figure 5 , the embedded proportional controller includes a housing and a circuit board installed in the housing. The circuit structure on the circuit board is composed of an embedded microprocessor and peripheral circuits connected to the embedded microprocessor and for the embedded microprocessor and It consists of a power supply module powered by peripheral circuits. The embedded microprocessor includes an A / D conversion unit, a memory and PWM output control unit, a digital input and output unit, a logic control unit and an interface control unit. The peripheral circuit includes an input signal conditioning circuit, a power amplifier circuit, a display circuit, a feedback indicating circuit, an RS232 interface circuit, a keyboard input circuit and a power supply module. The voltage input terminal and the current input terminal are connected to the A / D conversion unit through the input signal conditioning circuit, the power amplifier circuit is conne...
Embodiment 2
[0021] This embodiment is basically the same as Embodiment 1, and the special features are as follows:
[0022] The voltage input terminal 10 is connected to the A / D conversion unit 241 through the input signal conditioning circuit 21 through the U / U conversion circuit 19, and the current input terminal 10 is connected to the A / D conversion unit 241 through the input signal conditioning circuit 21 through the I / U conversion circuit 20. The D conversion unit 241 is connected, and the voltage input terminal 10 and the current input terminal 11 are connected to the terminal post 9 on the rear terminal panel 8 of the casing 1 .
[0023] The display circuit 27 is connected with a nixie tube 5 installed on the front control panel 3 of the casing 1 .
[0024] The lower side of the front control panel 3 of the housing 1 is arranged with six adjustment knobs 4 connected to the circuit board 6 .
Embodiment 3
[0026] Such as figure 1 The embedded proportional controller shown is based on an embedded microprocessor, which includes an A / D conversion unit, a PWM output control unit, a logic control unit, a digital input and output unit, an interface control unit, and a memory. In the three-dimensional perspective view of the embedded proportional controller shown in Figure 6, the embedded microprocessor and various peripheral circuits are all printed on the circuit board 6, and the circuit board 6 receives the voltage input by the terminal 9 on the rear wiring panel 8 or After the current signal is converted into a digital signal by the input conditioning circuit and the A / D conversion unit, it is input to the embedded microprocessor, and the digital signal can also be directly input to the embedded microprocessor through the peripheral keyboard input circuit, and the embedded microprocessor can directly input the digital signal to the embedded microprocessor. Adjustment and processing...
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