A remote water supply monitoring system based on the Internet of Things
A remote monitoring system and Internet of Things technology, applied in the field of water supply remote monitoring system based on the Internet of Things, can solve problems such as attenuation, signal distortion, and signal frequency hopping
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Embodiment 1
[0013] Embodiment 1, a water supply remote monitoring system based on the Internet of Things, including a signal input circuit, a separation and differential circuit, and a comparison output circuit, the signal input circuit receives the signal input for the control terminal in the remote water supply monitoring system based on the Internet of Things The signal in the terminal is screened by a double-T frequency selection circuit composed of resistors R1~R3, capacitor C1, and capacitor C3 to filter out a single-frequency signal, and at the same time use the operational amplifier AR1 to amplify in phase and input it into the separation differential circuit. The separation differential circuit Using transistor Q1, transistor Q2 and capacitor C4~capacitor C6 to form a synchronous separation circuit, the signal is separated into two circuits, one signal is input into the non-inverting input terminal of the operational amplifier AR2, and the second signal is input to the non-invertin...
Embodiment 2
[0016]Embodiment 2. On the basis of Embodiment 1, the comparison output circuit uses the comparator AR5 to compare and separate the output signal of the differential circuit. The comparator AR5 plays a role in stabilizing the signal. At the same time, the resistor R27 and the capacitor C7 are used to form an RC circuit for filtering Output, to filter out the clutter in the signal, that is, the compensation signal for the signal input terminal receiving the signal for the control terminal in the water supply remote monitoring system based on the Internet of Things, and the inverting input terminal of the op amp AR5 is connected to the op amp The output terminal of AR3, the non-inverting input terminal of the operational amplifier AR5 are connected to one end of the resistor R25 and the resistor R26, the other end of the resistor R25 is connected to the output terminal of the operational amplifier AR2, and the output terminal of the operational amplifier AR5 is connected to the ot...
Embodiment 3
[0017] Embodiment 3, on the basis of Embodiment 1, the signal input circuit receives the signal in the signal input terminal of the control terminal receiving signal in the water supply remote monitoring system based on the Internet of Things, and uses resistance R1 ~ resistance R3 and capacitor C1, capacitor C3 forms a double-T frequency selection circuit to screen out a single frequency signal. The single frequency signal is relatively stable. At the same time, the op amp AR1 is used to amplify in phase and then input into the separated differential circuit to amplify the power signal to ensure the signal strength. One end of the resistor R1 is connected to a capacitor. One end of C1 and the signal output port, the other end of resistor R1 is connected to resistor R3, one end of capacitor C3, the other end of resistor R3 is connected to resistor R5, one end of capacitor C2 and the non-inverting input end of op amp AR1, and the other end of capacitor C1 Connect the other end o...
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