Electricity utilization detection system for experimental equipment

Abstract

The utility model discloses a power utilization detection system for experimental equipment, which belongs to the technical field of power utilization equipment detection and can automatically identify inserted power utilization equipment according to preset power utilization equipment parameters, learn unknown equipment and store power utilization characteristics including current spectrum parameters and electric energy parameters such as voltage and power. The system can be connected with a PC upper computer through the communication module to set power consumption parameter content and manage unknown power consumption equipment. The system improves the management mode of the electric equipment in the laboratory, reduces the potential safety hazard of the electric equipment in the laboratory, improves the usability, safety and openness of the experimental equipment, caters to the wind direction of an open and intercommunicated laboratory, and has a wide application prospect. By collecting and analyzing the electrical parameters of the electrical equipment, the subordinate of the electrical equipment is judged, the power utilization method is improved, and intelligent management of the electrical equipment is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment detection, in particular to an electrical equipment detection system for experimental equipment. Background Art

[0002] In traditional laboratory electricity monitoring, most systems only measure the total power consumption and ignore the monitoring of power quality, such as voltage fluctuations, harmonic pollution, etc. These factors may affect the stable operation of laboratory precision equipment. In addition, traditional methods have limitations in identifying equipment failures and predicting maintenance, and usually cannot provide sufficient data to support decision-making, resulting in untimely equipment maintenance and increased operating costs and risks. Based on this, the utility model designs a laboratory equipment power consumption detection system to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide an experimental equipment electricity consumption detection system to improve the electricity consumption detection and optimization management of laboratory equipment, evaluate and monitor the power quality and operating status of laboratory electrical equipment through Fourier spectrum analysis method, and solve the technical problems mentioned in the background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an experimental equipment power consumption detection system, including a microcontroller module, a current transformer module, an electric energy detection module, a touch screen display module, a relay drive module, a WIFI communication module and a power supply module;

[0005] The current transformer module converts the current into voltage, and amplifies it to a dynamic range suitable for the microcontroller module through the signal conditioning circuit, and converts the current time domain signal by continuously sampling its voltage;

[0006] The power detection module obtains power parameters of the electrical appliance through the serial port;

[0007] The touch screen display module can obtain the coordinate data of the touch, and the microcontroller module communicates with its display screen via SPI to display the image video;

[0008] The relay driving module drives the closing and opening of the relay contacts through the microcontroller module to control whether the electrical equipment is powered on;

[0009] The WIFI communication module communicates with the microcontroller module through a serial port or SDIO, is connected to a PC through WIFI, and the system can be configured through the host computer;

[0010] The power module converts alternating current into direct current.

[0011] In a further solution, the microcontroller module adopts an STM32F407ZGT6 microcontroller, and the STM32F407ZGT6 microcontroller is connected to an external crystal oscillation circuit, a static random access memory, a non-volatile memory, a watchdog reset circuit, a USB to serial port circuit, an LED circuit, and a button circuit.

[0012] In a further embodiment, the current transformer module converts current into voltage via an IV conversion circuit.

[0013] In a further solution, the current transformer is transformed through IV, the single chip microcomputer uses ADC to collect time domain voltage, and converts it into frequency domain through FFT algorithm for spectrum analysis to obtain characteristic parameters of each electrical appliance.

[0014] In a further solution, the power detection module adopts the SUI-101A module to assist the spectrum characteristics in making predictions, and can detect multiple electrical appliances working at the same time.

[0015] In a further solution, the touch screen display module uses a 3.2-inch TFT touch screen to configure the power parameters and data display of the experimental equipment.

[0016] In a further solution, the relay drive module uses a relay drive circuit and an RC damping circuit for the GPIO of the microcontroller to power on and off the electrical equipment.

[0017] In a further solution, the WIFI communication module uses an ESP8266 WIFI module to enable the PC host computer to set up unknown experimental equipment and select power parameters.

[0018] In a further solution, the power module converts 220V AC into 12V DC through an AC-DC power module, efficiently converts 12V DC into 5V DC through a DC-DC regulator, and uses an LDO regulator to output a low ripple noise 3.3V power supply.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The experimental equipment power consumption detection system provided by the utility model adopts an electric energy detection module to collect the key parameters of the current and electric energy of the electrical equipment in real time, realize the judgment of the electrical equipment's subordination and power-off protection of abnormal power consumption, thereby improving the management and protection of laboratory equipment power consumption.

[0021] 2. After the utility model is connected to the experimental equipment, the system automatically collects the key power characteristics of the equipment such as current and electric energy, and determines whether it is a known power-consuming equipment. If it is, its power parameters are configured; otherwise, the corresponding characteristic parameters are learned and saved. If the power parameters of the equipment are abnormal or have reached the preset power parameters, the relay of the corresponding socket is driven to disconnect the power.

[0022] 3. The utility model can be connected to a PC host computer via a WIFI communication module, or the parameters of the electrical equipment can be configured via a touch screen display module, thereby achieving system installation with minimal interfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a module schematic diagram of the experimental equipment electricity detection system described in the utility model;

[0025] Figure 2 This is a schematic diagram of the working process of the power consumption detection system of the experimental equipment in the embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the STM32F407ZGT6 microcontroller system in the embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of a current transformer module and an electric energy detection module in an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of a WIFI communication module in an embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of a touch screen display module in an embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of a relay drive module in an embodiment of the utility model;

[0031] Figure 8 Schematic diagram of a power module in an embodiment of the utility model. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1 The laboratory electrical equipment detection system of the utility model comprises a microcontroller module, an electric energy detection module, a relay drive module, a touch screen display module, a WIFI communication module and a power supply module.

[0034] like Figure 2 As shown in the figure, it is the working flow chart of the power consumption detection system of the experimental equipment. After the system is powered on and each module is initialized, the relays connected to each socket are closed. After the experimental equipment is connected, the system automatically collects the key power consumption characteristics of the equipment such as current and power, and determines whether it is a known power-consuming device. If it is, its power consumption parameters are configured. Otherwise, the corresponding characteristic parameters are learned and saved, and the configuration is completed through WIFI communication with the PC host computer or the local touch screen. If the power consumption parameters of the equipment are abnormal or have reached the preset power parameters, the relay of the corresponding socket is driven to disconnect the power.

[0035] like Figure 3 As shown, the microcontroller system adopts STM32F407ZGT6, and 8MHz and 32.768kHz crystals are connected to STM32F407ZGT6 as external high-speed clock sources and real-time clock sources. Communicate with external Nor Flash GD25Q256EYIGR through SPI protocol, leaving 256Mbit of space to store data, and Nor Flash does not need to do bad block processing to increase the stability of the system. Flexible use of external memory through the FSMC interface of the microcontroller, providing up to 4Mbit of program running space through SRAMIS61LV25616AL-10TLI, can provide larger cache for embedded systems and display applications. Use external watchdog reset IC APX823-29W5G-7 to provide a longer reset time and external watchdog reset function for the microcontroller, increasing the robustness of the overall system. Through the USB to serial port IC CH340N, the serial port can be used to communicate with the PC host computer to print data on the computer for analysis, or the system can be debugged through serial port commands. LED circuits and button circuits are reserved for system debugging indication and control. Other peripheral interfaces and GPIO are introduced to leave margin for subsequent application upgrades.

[0036] like Figure 4As shown, the current transformer module and the electric energy detection module sense the induced current passing through the central phase line according to the corresponding proportion through the current transformer, convert the current into voltage through the IV conversion circuit, and amplify it to the dynamic range suitable for the ADC module inside the microcontroller through the signal conditioning circuit. The time domain signal of the current can be converted by continuously sampling its voltage. It is converted into a frequency domain signal for analysis through the fast Fourier transform algorithm. The parameters such as the active power, apparent power, effective value, power factor, phase angle, voltage frequency, and peak value of the phase line are obtained through the electric energy metering IC and sent to the microcontroller through the serial port or SPI.

[0037] like Figure 5 As shown, the WIFI communication module, the microcontroller system communicates with the WIFI communication module through the serial port or SDIO, the module is connected to the PC through WIFI, and the system can be configured through the host computer.

[0038] like Figure 6 As shown, the touch screen display module obtains the touch coordinate data through the touch screen controller XPT2046, the microcontroller communicates with its display screen through SPI to display the image video, and realizes the backlight adjustment and reset functions through some GPIO.

[0039] like Figure 7 As shown, the relay driving module uses GPIO to control the relay driving circuit through the microcontroller module, drives the closing and opening of the relay contacts, and controls whether the electrical equipment is powered on.

[0040] like Figure 8 As shown, the power module converts 220V AC power into 12V DC power through an AC-DC power module, efficiently converts 12V DC power into 5V DC power through a DC-DC regulator, and uses an LDO regulator to output a 3.3V power supply with low ripple noise.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An experimental equipment electricity detection system, characterized in that: Including microcontroller module, current transformer module, power detection module, touch screen display module, relay drive module, WIFI communication module and power supply module; The current transformer module converts the current into voltage, and amplifies it to a dynamic range suitable for the microcontroller module through the signal conditioning circuit, and converts the current time domain signal by continuously sampling its voltage; The power detection module obtains power parameters of the electrical appliance through the serial port; The touch screen display module can obtain the coordinate data of the touch, and the microcontroller module communicates with its display screen via SPI to display the image video; The relay driving module drives the closing and opening of the relay contacts through the microcontroller module to control whether the electrical equipment is powered on; The WIFI communication module communicates with the microcontroller module through a serial port or SDIO, is connected to a PC through WIFI, and the system can be configured through the host computer; The power module converts alternating current into direct current.

2. The experimental equipment electricity detection system according to claim 1, characterized in that: The microcontroller module adopts an STM32F407ZGT6 microcontroller, and the STM32F407ZGT6 microcontroller is connected with an external crystal oscillation circuit, a static random access memory, a non-volatile memory, a watchdog reset circuit, a USB to serial port circuit, an LED circuit, and a key circuit.

3. The experimental equipment electricity detection system according to claim 1, characterized in that: The current transformer module converts current into voltage through an IV conversion circuit.

4. The experimental equipment electricity detection system according to claim 1, characterized in that: The current transformer is converted by IV, and the single chip microcomputer uses ADC to collect the time domain voltage, which is converted into the frequency domain by the FFT algorithm for spectrum analysis to obtain the characteristic parameters of each electrical appliance.

5. The experimental equipment electricity detection system according to claim 1, characterized in that: The electric energy detection module adopts the SUI-101A module, which is used to assist the spectrum characteristics in making predictions and can detect multiple electrical appliances working at the same time.

6. The experimental equipment electricity detection system according to claim 1, characterized in that: The touch screen display module adopts a 3.2-inch TFT touch screen, which is used to configure the power parameters and data display of the experimental equipment.

7. The experimental equipment electricity detection system according to claim 1, characterized in that: The relay drive module adopts a relay drive circuit and an RC damping circuit, and is used for the GPIO of the microcontroller to realize powering on and off of the electrical equipment.

8. The experimental equipment electricity detection system according to claim 1, characterized in that: The WIFI communication module adopts ESP8266 WIFI module, which is used to realize the setting of unknown experimental equipment and the selection of power parameters by the PC host computer.

9. The experimental equipment electricity detection system according to claim 1, characterized in that: The power module converts 220V AC power into 12V DC power through an AC-DC power module, efficiently converts 12V DC power into 5V DC power through a DC-DC regulator, and uses an LDO regulator to output a 3.3V power supply with low ripple noise.

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