Circuit for amplifying monitoring signals in underground water monitoring terminal
A monitoring terminal and monitoring signal technology, applied in the direction of improving amplifiers to reduce the influence of noise, measuring devices, instruments, etc., can solve the problem of unfavorable microprocessor analysis and processing of monitoring signals, affecting the popularization and application of groundwater monitoring terminals, and monitoring data that cannot reflect the actual situation. situation and other problems, to achieve the effect of low cost, fewer components, and avoid cost waste
Inactive Publication Date: 2016-06-01
张鹏
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Problems solved by technology
The signal detected by the existing groundwater monitoring terminal is weak, which is not conducive to the analysis and processing of the monitoring signal by the microprocessor, which leads to the fact that the monitoring data cannot reflect the actual situation, which in turn affects the popularization and application of the groundwater monitoring terminal
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[0014] Such as figure 1 As shown, the circuit for amplifying the monitoring signal in the groundwater monitoring terminal includes the signal input line, the first capacitor C1, the first resistor R1, the second resistor R2, the third resistor R3, the adjustable resistor R4, the fifth resistor R5, the voltage regulator Tube DW1, operational amplifier A1 and signal output line, wherein, the signal input line is connected to the fifth resistor R5, the signal output line is connected to the output end of the operational amplifier A1, and the fifth resistor R5 is relatively connected to the other end of the signal input line end and the operational amplifier Connect to the non-inverting input of A1. One end of the parallel branch formed by the parallel connection of the first capacitor C1 and the third resistor R3 is connected to the inverting input end of the operational amplifier A1, and the other end thereof is connected to the output end of the operational amplifier A1. In th...
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The present invention discloses a circuit for amplifying monitoring signals in an underground water monitoring terminal. The circuit comprises a signal input circuit, a first capacitor, a second resistor, a third resistor, an adjustable resistor, a fifth resistor, an operational amplifier and a signal output line. The signal input line is connected with the fifth resistor, the signal output line is connected with the output end of the operational amplifier, and the fifth resistor is connected with the non-inverting input end of the operational amplifier. One end of a parallel branch formed through connecting the first capacitor and the third resistor in parallel is connected with the inverted input end of the operational amplifier, and the other end of the parallel branch is connected with the output end of the operational amplifier. The two ends of the adjustable resistor are respectively connected with the second resistor and the ground, the adjusting end of the adjustable resistor is connected with the inverted input end of the operational amplifier, and the second resistor is connected with the power supply. The circuit for amplifying monitoring signals in an underground water monitoring terminal is able to amplify signals monitored by a sensor and is helpful for analysis and process of monitoring signals through a microprocessor so as to benefit the popularization and application of an underground water monitoring terminal.
Description
technical field [0001] The invention relates to a monitoring terminal device, in particular to a circuit for amplifying monitoring signals in a groundwater monitoring terminal. Background technique [0002] As an important water body on the earth, groundwater has a close relationship with human society. The storage of groundwater is like forming a huge reservoir underground. With its stable water supply conditions and good water quality, it has become the water for agricultural irrigation, industrial and mining enterprises and urban life. It has become an important water resource essential to human society, especially in arid and semi-arid areas where ground water is scarce, and groundwater often becomes the main water supply source for the local area. However, the pollution of water resources is becoming more and more serious now, which also threatens people's water safety. Therefore, the monitoring of groundwater is becoming more and more important. Nowadays, groundwater ...
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IPC IPC(8): G01D21/02H03F1/26
Inventor 张鹏
Owner 张鹏