CN111355453A

CN111355453A - Electric appliance cabinet remote monitoring system based on Internet of things

Info

Publication number: CN111355453A
Application number: CN202010190607.6A
Authority: CN
Inventors: 周宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-06-30

Abstract

The invention discloses an electric appliance cabinet remote monitoring system based on the Internet of things, which comprises a signal sampling module and a separation calibration module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample node signals in the electric appliance cabinet monitoring system, the separation calibration module uses a separation circuit consisting of an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to reduce the signals to be separated into two paths of signals with the same frequency and different amplitudes, one path of signals uses a noise reduction circuit consisting of an operational amplifier AR3, a capacitor C1 and a capacitor C2 to reduce the signal interference, the two paths of signals use a phase shift circuit consisting of the operational amplifier AR4, a resistor R10, a resistor R12 and a capacitor C5 to eliminate signal spikes, and finally the two paths of signals are subjected to addition regulation by the operational amplifier AR5 and are sent to terminals of the electric appliance cabinet monitoring system by a signal transmitter E1, so that the node signals in the electric, and converting the signal into a correction reference signal of the electric appliance cabinet monitoring system terminal.

Description

Electric appliance cabinet remote monitoring system based on Internet of things

Technical Field

The invention relates to the technical field of electric appliance cabinets, in particular to an electric appliance cabinet remote monitoring system based on the Internet of things.

Background

The Internet of things is an important component of a new generation of information technology and is also an important development stage of an 'informatization' era, the combination of the electric appliance cabinets and the Internet of things improves the state data management efficiency of the electric appliance cabinets, meanwhile, the quantity distribution of the electric appliance cabinets in cities and towns is large, once a certain electric appliance cabinet breaks down, the Internet of things is required to transmit signals to alarm in time, but the electric appliance cabinets need to transmit a large amount of data information in real time, and the signals are interfered by high-voltage wires in the information transmission process, so that the signals are distorted, and the signals received by the electric appliance cabinet monitoring system terminal are easily distorted.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an electrical cabinet remote monitoring system based on the internet of things, which can sample and adjust the node signal in the electrical cabinet monitoring system and convert the node signal into a calibration reference signal of the electrical cabinet monitoring system terminal.

The technical scheme includes that the remote monitoring system based on the Internet of things comprises a signal sampling module and a separation calibration module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample node signals in the monitoring system of the electric appliance cabinet, the separation calibration module uses an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to form a separation circuit to reduce signals and separate the signals into two signals with the same frequency and different amplitudes, one signal uses a noise reduction circuit formed by the operational amplifier AR3, the capacitor C1 and the capacitor C2 to reduce signal interference, the other signal uses the operational amplifier AR4, a resistor R10, a resistor R12 and the capacitor C5 to form a phase shift circuit to eliminate signal spikes, and finally the two signals are subjected to addition regulation through the operational amplifier AR5 and sent to a terminal of the monitoring system of the electric appliance cabinet through a signal transmitter E1.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;

1. the nature of the collector amplification voltage of a triode Q1 is used, the signal power is amplified through an operational amplifier AR2, the output signal of a signal sampling module is divided into two paths of signals with the same frequency and different amplitudes, the ratio of the two paths of signal voltages can be adjusted through adjusting the ratio of a resistor R3 to a resistor R5, namely the ratio of two paths of signal calibration can be adjusted, one path of signal reduces signal interference through a noise reduction circuit consisting of the operational amplifier AR3, a capacitor C1 and a capacitor C2, the capacitor C1 plays a role in high-frequency vibration elimination, the capacitor C2 plays a role in bypassing a capacitor, the operational amplifier AR3 plays a role in power amplification, therefore, the signal is subjected to high-frequency vibration elimination through the capacitor C1, then an RC circuit consisting of an electron R7 and the capacitor C2 is used for filtering, and finally the operational amplifier AR3 performs power amplification compensation on-loss of;

2. a phase-shifting circuit is formed by the operational amplifier AR4, the resistor R10, the resistor R12 and the capacitor C5 to eliminate signal spikes, the resistor R11 and the capacitor C5 are used for delaying signal phases, namely, the phase-shifting of an output signal of the operational amplifier AR4 is realized, the ratio of the resistor R11 to the resistor R12 can be adjusted by adjusting the resistance value of the resistor R11, namely, the phase-shifting angle is adjusted, the effect of eliminating the signal spikes is achieved, finally, the two paths of signals are subjected to addition adjustment through the operational amplifier AR5 and are sent to the terminal of the monitoring system of the electric appliance cabinet through the signal transmitter E1, the reference signal is corrected for the terminal of the monitoring system of the electric appliance cabinet.

Drawings

Fig. 1 is a diagram of a separation calibration module of an electric appliance cabinet remote monitoring system based on the internet of things.

Fig. 2 is a signal sampling module diagram of the remote monitoring system of the electric appliance cabinet based on the internet of things.

Detailed Description

The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

The embodiment I provides an electric appliance cabinet remote monitoring system based on the Internet of things, which comprises a signal sampling module and a separation calibration module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample node signals in the electric appliance cabinet monitoring system, the separation calibration module uses a separation circuit composed of an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to separate signals into two signals with the same frequency and different amplitudes, one signal uses a noise reduction circuit composed of an operational amplifier AR3, a capacitor C1 and a capacitor C2 to reduce signal interference, the other signal uses an operational amplifier AR4, a resistor R10, a resistor R12 and a capacitor C5 to eliminate signal spikes, and finally the two signals are subjected to addition regulation through the operational amplifier AR5 and sent to a terminal of the electric appliance cabinet monitoring system through a signal transmitter E1;

the separation calibration module uses an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to form a separation circuit to separate a signal into two paths of signals with same frequency and different amplitudes, uses the property of voltage amplification of a collector of the triode Q1 to amplify the signal power through the operational amplifier AR2, divides the signal output by the signal sampling module into two paths of signals with same frequency and different amplitudes, can adjust the ratio of the two paths of signal voltages through adjusting the ratio of a resistor R3 and a resistor R5, namely can adjust the ratio of two paths of calibration, uses a noise reduction circuit formed by the operational amplifier AR3, the capacitor C1 and the capacitor C2 to reduce signal interference, the capacitor C1 plays a role in high-frequency oscillation elimination, the capacitor C2 plays a role in bypass capacitance, the operational amplifier AR3 plays a role in power amplification, so that the signal is subjected to high-frequency oscillation elimination through the capacitor C1, then, an RC circuit filter is formed by the electronic R7 and the capacitor C2, and finally the operational amplifier 3 compensates for signal conduction, the noise reduction function is integrally realized, two paths of signals form a phase shift circuit by using an operational amplifier AR4, a resistor R10, a resistor R12 and a capacitor C5 to eliminate signal peaks, the phase of the signals is delayed by using a resistor R11 and a capacitor C5, namely, the signals output by the operational amplifier AR4 are shifted, the ratio of the resistor R11 to the resistor R12 can be adjusted by adjusting the resistance value of the resistor R11, namely, the phase shift angle is adjusted, so that the effect of eliminating the signal peaks is achieved, and finally, the two paths of signals are subjected to addition adjustment by the operational amplifier AR5 and are sent to the terminal of the monitoring system of the electric appliance cabinet by a signal transmitter E1;

the specific structure of the separation calibration module comprises that a non-inverting input end of an operational amplifier AR2 is connected with one end of a resistor R3, one end of a resistor R6 and one end of a capacitor C3, an inverting input end of an operational amplifier AR2 is connected with one end of a resistor R4 and one end of a resistor R6, the other end of the resistor R6 is connected with the other end of a resistor R6, an output end of the operational amplifier AR 6 is connected with a collector of a transistor Q6 and the resistor R6, one end of the resistor R6 and the other end of the capacitor C6, a base of the transistor Q6 is connected with one end of the resistor R6, an emitter of the transistor Q6 is connected with one end of the capacitor C6, the other end of the capacitor C6 is connected with ground, one end of the resistor R6 is connected with one end of the non-inverting input end of the capacitor C6 and the non-inverting input end of the operational amplifier AR 6, the other end of the operational amplifier AR 6 is connected with the other end of the resistor R6, the output end of the operational amplifier AR 6, One end of a capacitor C1, the inverting input end of an operational amplifier AR3 is connected with the other end of a resistor R9 and one end of a resistor R8, the other end of a resistor R8 is grounded, the non-inverting input end of an operational amplifier AR3 is connected with one ends of a resistor R7 and a capacitor C2, the other end of a capacitor C2 is grounded, the other end of a resistor R7 is connected with the other end of a capacitor C1 and the other end of a resistor R6, the inverting input end of an operational amplifier AR5 is connected with one ends of a resistor R13 and a resistor R14, the other end of a resistor R13 is grounded, the output end of the operational amplifier AR5 is connected with the other end of a resistor R14 and one end of a resistor R15, and.

In the second embodiment, on the basis of the first embodiment, the signal sampling module selects a signal sampler J1 with a model of DAM-3056AH to sample a node signal in the electrical cabinet monitoring system, a power supply end of the signal sampler J1 is connected to +5V, a ground end of the signal sampler J1 is grounded, an output end of the signal sampler J1 is connected to a negative electrode of a voltage regulator tube D1 and a non-inverting input end of an operational amplifier AR1, a positive electrode of the voltage regulator tube D1 is grounded, an inverting input end of the operational amplifier AR1 is connected to one end of a resistor R1 and a resistor R2, the other end of the resistor R1 is grounded, and an output end of the operational amplifier AR1 is connected to the other end of a resistor R2 and the other end of a resistor R.

When the system is used specifically, the signal sampling module samples node signals in the monitoring system of the electric appliance cabinet by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module uses a separation circuit composed of an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to separate the signals into two signals with the same frequency and different amplitudes, one signal uses a noise reduction circuit composed of an operational amplifier AR3, a capacitor C1 and a capacitor C2 to reduce signal interference, the other signal uses an operational amplifier AR4, a resistor R10, a resistor R12 and a capacitor C5 to eliminate signal peaks, and finally the two signals are subjected to addition regulation by the operational amplifier AR5 and sent to a terminal of the monitoring system of the electric appliance cabinet by a signal transmitter E1.

While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.

Claims

1. An electric appliance cabinet remote monitoring system based on the Internet of things comprises a signal sampling module and a separation calibration module, and is characterized in that the signal sampling module samples node signals in the electric appliance cabinet monitoring system by using a signal sampler J1 with the model of DAM-3056AH, the separation calibration module uses a separation circuit composed of an operational amplifier AR2, a triode Q1, a capacitor C3 and a capacitor C4 to reduce the signals into two signals with the same frequency and different amplitudes, one signal uses a noise reduction circuit composed of an operational amplifier AR3, a capacitor C1 and a capacitor C2 to reduce signal interference, the other signal uses a phase shift circuit composed of the operational amplifier AR4, a resistor R10, a resistor R12 and a capacitor C5 to eliminate signal spikes, and finally the two signals are subjected to addition regulation by the operational amplifier AR5 and are sent to a terminal of the electric appliance cabinet monitoring system by a signal transmitter E1;

the separation calibration module comprises an operational amplifier AR2, wherein a non-inverting input end of the operational amplifier AR2 is connected with one end of a resistor R3, one end of a resistor R6 and one end of a capacitor C6, an inverting input end of the operational amplifier AR 6 is connected with one end of the resistor R6 and one end of the resistor R6, the other end of the resistor R6 is connected with the other end of the resistor R6, an output end of the operational amplifier AR 6 is connected with a collector of a transistor Q6 and the resistor R6, one end of the resistor R6 and the other end of the capacitor C6, a base of the transistor Q6 is connected with one end of the resistor R6, an emitter of the transistor Q6 is connected with one end of the capacitor C6, the other end of the capacitor C6 is connected with the ground, one end of the resistor R6 is connected with one end of the non-inverting input end of the capacitor C6 and the non-inverting input end of the operational amplifier AR 6, the other end of the operational amplifier AR 6 is connected with the other end of the resistor R6, the non-inverting input end of the operational amplifier, One end of a capacitor C1, the inverting input end of an operational amplifier AR3 is connected with the other end of a resistor R9 and one end of a resistor R8, the other end of a resistor R8 is grounded, the non-inverting input end of an operational amplifier AR3 is connected with one ends of a resistor R7 and a capacitor C2, the other end of a capacitor C2 is grounded, the other end of a resistor R7 is connected with the other end of a capacitor C1 and the other end of a resistor R6, the inverting input end of an operational amplifier AR5 is connected with one ends of a resistor R13 and a resistor R14, the other end of a resistor R13 is grounded, the output end of the operational amplifier AR5 is connected with the other end of a resistor R14 and one end of a resistor R15, and.

2. The Internet of things-based electric appliance cabinet remote monitoring system is characterized in that the signal sampling module comprises a DAM-3056AH signal sampler J1, the power supply end of the signal sampler J1 is connected with +5V, the ground end of the signal sampler J1 is grounded, the output end of the signal sampler J1 is connected with the negative electrode of a voltage regulator tube D1 and the non-inverting input end of an operational amplifier AR1, the positive electrode of a voltage regulator tube D1 is grounded, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and one end of a resistor R2, the other end of a resistor R1 is grounded, and the output end of the operational amplifier AR1 is connected with the other end of a resistor R2 and the other end of a resistor R3.