A monitoring device applied to load management terminal

Abstract

The utility model provides a monitoring device applied to a load management terminal, which effectively solves the problem that the existing load management terminal cannot operate stably when power fluctuations occur in the municipal grid, thereby affecting the reliability of load control. The monitoring device of the utility model includes a voltage unit, a statistical unit and a monitoring terminal applied to multiple load management terminals, the voltage unit detects the voltage received by the load management terminal to obtain a voltage signal, obtains an output voltage signal based on the voltage signal, and outputs a reminder signal to the monitoring terminal based on the output voltage signal; the output voltage signal is output to the voltage receiving end of the load management terminal; the voltage unit is respectively connected to one end of the statistical unit and the voltage receiving end of the load management terminal, and the other end of the statistical unit is connected to the monitoring terminal, so as to ensure that the voltage received by the load management terminal is in a normal state.

Description

Technical Field

[0001] The utility model relates to the field of power control equipment measurement, in particular to a monitoring device applied to a load management terminal. Background Art

[0002] The power load management equipment is a specific and materialized form of supervision of the power load equipment or the load management terminal. The load management terminal achieves better management with the help of the power load management equipment. For example, the "Power Load Management Equipment" provided by the Chinese application number 201922448250.2 solves the technical problem that the power load management equipment easily inhales a lot of dust during heat dissipation; and the "Power Load Management Device" provided by the Chinese application number 202321435863.2 solves the existing technical problems of real-time collection of one or more loads and low reliability of load control.

[0003] Regardless of how the form of the power load management equipment changes, it needs power supply for corresponding processing and calculation. The power load has the serious problem of huge amount of collected load data and multiple devices to be monitored. It is also necessary for the power module to provide stable power supply to the load management terminal in the form of voltage. The existing load management terminal is generally connected to the municipal grid. When the power in the municipal grid fluctuates, the voltage received by the voltage receiving end of the load management terminal is relatively large, which affects the stable operation of the load management terminal and further affects the reliability of load control.

[0004] That is, the existing load management terminal cannot operate stably when power fluctuations occur in the municipal grid, thereby affecting the reliability of load control.

[0005] Therefore, the utility model provides a new solution to solve this problem. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a monitoring device for use in a load management terminal, which effectively solves the problem that the existing load management terminal cannot operate stably when power fluctuations occur in the municipal grid, thereby affecting the reliability of load control.

[0007] The technical solution is a monitoring device applied to a load management terminal, the monitoring device comprising a voltage unit applied to a plurality of load management terminals, a statistical unit and a monitoring terminal, the voltage unit detecting a voltage received by the load management terminal to obtain a voltage signal, obtaining an output voltage signal based on the voltage signal, and outputting a reminder signal to the monitoring terminal based on the output voltage signal;

[0008] The output voltage signal is output to a voltage receiving end of a load management terminal;

[0009] The voltage unit is respectively connected to one end of the statistical unit and the voltage receiving end of the load management terminal, and the other end of the statistical unit is connected to the monitoring terminal.

[0010] Furthermore, the voltage unit performs a subtraction operation on the voltage signal to obtain a difference signal, and outputs a voltage signal based on the difference signal.

[0011] Furthermore, the voltage unit performs a subtraction operation on the voltage signal and the difference signal to obtain an output voltage signal.

[0012] Furthermore, the statistical unit receives the high level output by the voltage unit, and obtains the monitoring terminal based on the high level output reminder signal.

[0013] Furthermore, the statistical unit performs a multiplication operation on the high level to obtain a reminder signal.

[0014] The utility model achieves the following beneficial effects:

[0015] The present application sets a voltage unit for the load management terminal, and sets a statistical unit for multiple load management terminals. The voltage unit is used to detect the voltage provided by the municipal network received by the load management terminal, and the voltage signal is processed when the voltage is in an abnormal state, so that the voltage received by the load management terminal is in a normal state. The statistical unit outputs a reminder signal to the monitoring terminal when the number of times the voltage received by the load management terminal is in an abnormal state reaches two consecutive times, thereby ensuring that the voltage received by the load management terminal is in a normal state, and detecting the municipal network and related cables, so as to avoid the subsequent state of the municipal network affecting the safety of the load management terminal, and effectively solves the problem that the existing load management terminal cannot operate stably when power fluctuations occur in the municipal network, thereby affecting the reliability of load control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the framework of the utility model.

[0017] Figure 2 This is a circuit schematic diagram of the voltage unit of the utility model.

[0018] Figure 3 This is a circuit schematic diagram of the statistical unit of the utility model. DETAILED DESCRIPTION

[0019] For the above and other technical contents, features and functions of the present invention, please refer to the following attached Figure 1-3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0020] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0021] A monitoring device applied to a load management terminal, the monitoring device comprising a voltage unit, a statistical unit and a monitoring terminal applied to each load management terminal, the voltage unit detecting a voltage received by the load management terminal to obtain a voltage signal, obtaining an output voltage signal based on the voltage signal, and outputting a reminder signal to the monitoring terminal based on the output voltage signal;

[0022] The output voltage signal is output to a voltage receiving end of a load management terminal;

[0023] The voltage unit is respectively connected to one end of the statistical unit and the voltage receiving end of the load management terminal, and the other end of the statistical unit is connected to the monitoring terminal.

[0024] The voltage unit obtains a voltage signal based on the voltage sensor U1 detecting the voltage provided by the city network to the load management terminal, wherein the voltage sensor U1 can be used with a voltage sensor of a model similar to KCE-VE01. The voltage signal is transmitted to the operational amplifier U1B via the resistor R6 and subtracted from the rated voltage signal provided by the resistor R11 to obtain a difference signal. When the difference signal cannot turn on the transistor Q1, it indicates that the load management terminal receives a normal voltage provided by the city network at this time, and there is no need to process the voltage received by the load management terminal at this time. When the difference signal turns on the transistor Q1, it indicates that the voltage provided by the city network received by the load management terminal is higher than the load The rated voltage that the management terminal can accept is too large and is in an abnormal state, which may easily have a significant impact on the safe operation of the load management terminal. At this time, the transistor Q1 turns on the diode D1, and the diode D1 outputs a high level to turn on the thyristor Q2 through the capacitor C2. The thyristor Q2 outputs the voltage signal to the operational amplifier U3B, and the inverting end of the operational amplifier U3B receives the difference signal. The operational amplifier U3B subtracts the voltage signal from the difference signal to obtain the output voltage signal, and the output voltage signal is output to the voltage receiving end of each load management terminal, thereby ensuring that the output voltage received by the load management terminal is in a normal state and avoiding affecting the safe operation of the load management terminal.

[0025] The voltage unit includes an operational amplifier U1B, the in-phase end of the operational amplifier U1B is respectively connected to one end of a resistor R6, one end of a resistor R1, and an anode of a thyristor Q2, the other end of the resistor R6 is connected to the out pin of the voltage sensor U1, the inverting end of the operational amplifier U1B is respectively connected to one end of a resistor R4 and one end of a resistor R11, the other end of the resistor R11 is respectively connected to one end of a resistor R8, a vcc pin of the voltage sensor U1 and a positive polarity power supply VCC, the output end of the operational amplifier U1B is respectively connected to the other end of the resistor R4, one end of the resistor R2, and the base of the transistor Q1, the collector of the transistor Q1 is respectively connected to the other end of the resistor R8, the The positive electrode and the emitter of the transistor Q1 are connected to one end of the resistor R3, the negative electrode of the diode D1 is respectively connected to one end of the capacitor C2 and the control electrode of the thyristor Q2, the cathode of the thyristor Q2 is connected to one end of the resistor R5, the other end of the resistor R5 is respectively connected to one end of the resistor R9 and the in-phase end of the operational amplifier U3B, the inverting end of the operational amplifier U3B is respectively connected to one end of the resistor R10 and the other end of the resistor R2, the output end of the operational amplifier U3B is respectively connected to the other end of the resistor R10 and the voltage receiving end, the other end of the resistor R9 is respectively connected to the other end of the capacitor C2, the other end of the resistor R3, the other end of the resistor R1, the gnd pin of the voltage sensor U1 and the ground.

[0026] When the diode D1 in the voltage unit outputs a high level, the statistical unit outputs the high level output by the diode D1 through the 2nd pin of the switch S1 and the connected 3rd pin to the resistor R7 and the capacitor C3 for delay and then transmits it to the 1st pin of the multiplier V1. The resistor R7 turns on the relay K1 through the high level. At this time, the 2nd pin of the switch S1 is disconnected from the 3rd pin and connected to the 1st pin. At this time, if the voltage unit detects that the voltage output to the load management terminal is in an abnormal state again, the high level output by the diode D1 is output to the 2nd pin of the multiplier V1 through the 2nd pin and the 1st pin of the switch S1. The multiplier V1 multiplies the two received high levels. When the multiplier V1 turns on the diode D2, it indicates that the voltage received by the load management terminal has been in an abnormal state twice in a row. Then the diode D2 outputs a reminder signal to the monitoring terminal. The monitoring terminal is used to monitor multiple load management terminals. If the monitoring terminal receives the reminder signal, the municipal network and the cable connected to the load management terminal corresponding to the reminder signal are detected, so as to avoid the subsequent state of the municipal network from affecting the load management terminal.

[0027] The statistical unit includes a switch S1, wherein pin 2 of the switch S1 is respectively connected to the cathode of the diode D1 in the voltage unit, one end of the capacitor C1, and the control electrode of the thyristor Q2, pin 3 of the switch S1 is connected to one end of the resistor R7, the other end of the resistor R7 is respectively connected to one end of the capacitor C3, one end of the relay K1, and pin 1 of the multiplier V1, pin 2 of the multiplier V1 is connected to pin 1 of the switch S1, the output end of the multiplier V1 and the anode of the diode D2, the cathode of the diode D2 is connected to the monitoring terminal, and the other end of the relay K1 is respectively connected to the other end of the capacitor C3, the other end of the resistor R9 in the voltage unit and connected to the ground.

[0028] For example, in actual use, the voltage signal collected by the voltage unit is 4V, and the operational amplifier U1B performs a subtraction operation with the rated voltage signal of 3.1V to obtain a difference signal of 0.8V. The difference signal turns on the transistor Q1, and the transistor Q1 outputs a high level through the diode D1. At the same time, the voltage signal is subtracted from the difference signal through the operational amplifier U3B, and a 3.1V output voltage signal is output to the voltage receiving end of the load management terminal. The high level is output to the multiplier V1 after a delay through the 2nd and 3rd pins of the switch S1 through the resistor R7 and the capacitor C3. After receiving two high levels, the multiplier V1 outputs a reminder signal to the monitoring terminal.

[0029] When the utility model is in use, the voltage unit obtains a voltage signal based on the voltage sensor U1 detecting the voltage provided by the city network to the load management terminal. The voltage signal is transmitted to the operational amplifier U1B through the resistor R6 to perform a subtraction operation with the rated voltage signal provided by the resistor R11 to obtain a difference signal. When the difference signal turns on the transistor Q1, the transistor Q1 turns on the diode D1 at this time, and the diode D1 outputs a high level to turn on the thyristor Q2 through the capacitor C2. The thyristor Q2 outputs the voltage signal to the operational amplifier U3B, and the inverting end of the operational amplifier U3B receives the difference signal. The operational amplifier U3B performs a subtraction operation on the voltage signal and the difference signal to obtain an output voltage signal, and the output voltage signal is output to the voltage receiving end of each load management terminal, thereby ensuring that the output voltage received by the load management terminal is in a normal state; When the diode D1 in the voltage unit outputs a high level, the statistical unit outputs the high level of the diode D1 through the 2nd pin of the switch S1 and the connected 3rd pin to the resistor R7 and the capacitor C3 for delay and then transmits it to the 1st pin of the multiplier V1. The resistor R7 turns on the relay K1 through the high level. At this time, the 2nd pin of the switch S1 is disconnected from the 3rd pin and connected to the 1st pin. The high level output by the diode D1 is output to the 2nd pin of the multiplier V1 through the 2nd pin and the 1st pin of the switch S1. The multiplier V1 multiplies the two high levels received. When the multiplier V1 turns on the diode D2, the diode D2 outputs a reminder signal to the monitoring terminal. The city network and the cable connected to the load management terminal corresponding to the reminder signal are detected, so as to avoid the subsequent state of the city network affecting the safety of the load management terminal.

[0030] The utility model achieves the following beneficial effects:

[0031] (1) The present application sets a voltage unit for the load management terminal, and sets a statistical unit for multiple load management terminals. The voltage unit is used to detect the voltage provided by the municipal network received by the load management terminal, and the voltage signal is processed when the voltage is in an abnormal state, so that the voltage received by the load management terminal is in a normal state. The statistical unit outputs a reminder signal to the monitoring terminal when the number of times the voltage received by the load management terminal is in an abnormal state reaches two times in a row, thereby ensuring that the voltage received by the load management terminal is in a normal state, and detecting the municipal network and related cables, so as to avoid the subsequent state of the municipal network affecting the safety of the load management terminal, and effectively solves the problem that the existing load management terminal cannot operate stably when the municipal network has power fluctuations, thereby affecting the reliability of load control.

[0032] (2) The voltage unit provided in the present application detects the voltage provided by the city grid received by the load management terminal, and determines whether the voltage provided by the city grid is in a normal state based on the operational amplifier U1B and the transistor Q1, and performs a subtraction operation on the voltage signal and the difference signal output by the operational amplifier U1B based on the operational amplifier, so that the output voltage signal received by the load management terminal is normal and will not affect the safe operation of the load management terminal.

[0033] (3) When the transistor Q1 outputs a high level, the statistical unit set in the present application starts to receive the number of high-level outputs of the transistor Q1, and outputs a reminder signal through the multiplier V1 when the high level is continuously received, indicating that the voltage provided by the city grid has been in a continuous unstable state. At this time, the reminder signal is output to the monitoring terminal to detect the city grid and the cables connected to the load management terminal, so as to avoid the subsequent state of the city grid affecting the safety of the load management terminal, thereby ensuring the safe operation of the load management terminal.

Claims

1. A monitoring device applied to a load management terminal, characterized in that: The monitoring device includes a voltage unit, a statistical unit and a monitoring terminal applied to a plurality of load management terminals, wherein the voltage unit detects a voltage received by the load management terminal to obtain a voltage signal, obtains an output voltage signal based on the voltage signal, and outputs a reminder signal to the monitoring terminal based on the output voltage signal; The output voltage signal is output to a voltage receiving end of a load management terminal; The voltage unit is respectively connected to one end of the statistical unit and the voltage receiving end of the load management terminal, and the other end of the statistical unit is connected to the monitoring terminal.

2. The monitoring device applied to a load management terminal according to claim 1, characterized in that: The voltage unit performs a subtraction operation on the voltage signal to obtain a difference signal, and outputs a voltage signal based on the difference signal.

3. The monitoring device applied to a load management terminal according to claim 2, characterized in that: The voltage unit performs a subtraction operation on the voltage signal and the difference signal to obtain an output voltage signal.

4. The monitoring device applied to a load management terminal according to claim 1, characterized in that: The statistical unit receives the high level output by the voltage unit, and obtains the monitoring terminal based on the high level output reminder signal.

5. The monitoring device applied to a load management terminal according to claim 4, characterized in that: The statistical unit performs a multiplication operation on the high level to obtain a reminder signal.

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