Multi-meter integrated data acquisition system

Abstract

The utility model relates to a multi-meter integrated data acquisition system, which comprises a meter body, a current detection circuit, a flow detection circuit, a heat detection circuit, an MUC chip, a power supply module and a communication module, an ADC port of the MUC chip is connected with an instrument amplifier, and the MUC chip is connected with a current detection circuit, a flow detection circuit and a heat detection circuit through the instrument amplifier. The power supply module comprises a rectifying circuit and a direct current step-down circuit; the communication module is in communication connection with the MUC chip, and the MUC chip is connected with an upper computer through the communication module. The MCU chip is arranged and used for data acquisition, the instrument amplifier is combined to ensure the detection precision, the detection precision is uploaded to the upper computer through the communication module, the detection precision is ensured, and the circuit structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity consumption information collection, in particular to a multi-meter integrated data collection system. Background Art

[0002] With the development of intelligent management platforms, the demand for data continues to increase. More and more detailed data will facilitate trend analysis, step analysis, peak and valley analysis of energy consumption in the whole society, thereby maximizing the value of resources and solving the technical difficulties in building a dynamic data platform for cross-industry operations of electricity, water, gas and heat, thereby providing a hardware foundation for optimizing energy scheduling strategies, improving community management, and building supporting services.

[0003] Faced with the increasing number of types of collected data, the existing collection equipment has a single function and is not convenient for sending multiple data. Therefore, there is an urgent need for a data collection system that is easy for users to use. Summary of the invention

[0004] In order to solve the problem that the existing acquisition equipment has a single function and is inconvenient to send multiple data, the utility model proposes a multi-meter integrated data acquisition system, which is equipped with a MUC chip and used for data acquisition, combined with an instrument amplifier to ensure detection accuracy, and then uploaded to the host computer by a communication module, thereby ensuring detection accuracy and having a simple circuit structure.

[0005] In order to achieve the above purpose, the utility model provides a multi-meter integrated data acquisition system.

[0006] A multi-meter integrated data acquisition system, comprising a meter body, a current detection circuit, a flow detection circuit and a heat detection circuit, and also comprising a MUC chip, a power module and a communication module;

[0007] The ADC port of the MUC chip is connected to an instrument amplifier, and the MUC chip is respectively connected to a current detection circuit, a flow detection circuit and a heat detection circuit through the instrument amplifier;

[0008] The power supply module includes a rectifier circuit and a DC step-down circuit;

[0009] The communication module is connected to the MUC chip for communication, and the MUC chip is connected to the host computer via the communication module.

[0010] The current detection circuit is used to detect the power-on status of the equipment and the power consumption of the user. The flow detection circuit and the heat detection circuit detect the heating and water consumption respectively. The above parameters are sent to the MUC chip and then uploaded to the host computer by the MUC chip through the communication module, realizing the effect of multiple meters in one.

[0011] Furthermore, the current detection circuit includes a single-phase current acquisition chip and a detection resistor, the detection resistor is used to detect current, the detection resistor is connected to the instrument amplifier through a filter circuit, and the single-phase current acquisition chip is connected to the MUC chip through an SPI serial port.

[0012] The detection resistor is used to detect the loop current, and the single-phase current acquisition chip is used to monitor the user's power consumption.

[0013] Furthermore, the flow detection circuit includes an ultrasonic flow meter, and the output end of the ultrasonic flow meter is connected to the input end of the instrument amplifier.

[0014] Ultrasonic flow is set outside the pipe to monitor the user's water consumption.

[0015] Furthermore, the heat detection circuit includes a temperature sensor, and an output end of the temperature sensor is connected to an input end of the instrument amplifier.

[0016] The temperature sensor is combined with the ultrasonic flow meter to detect the heating status of users.

[0017] Furthermore, the MUC chip is communicatively connected to an LED display unit, and an input end of the MUC chip is also connected to a key unit.

[0018] The LED display unit is provided to facilitate user viewing, and the button unit is provided to facilitate human-computer interaction and switch the displayed content.

[0019] Furthermore, the rectifier circuit includes a transformer and a rectifier bridge, the primary side of the transformer is connected to the 220V AC power supply, and the secondary side is connected to the rectifier bridge, the output end of the rectifier bridge is connected to the DC step-down circuit, and the DC voltage circuit includes a voltage conversion chip, and the voltage conversion chip is respectively connected to the MUC chip current detection circuit, flow detection circuit, heat detection circuit and communication module.

[0020] Furthermore, the communication module includes an RS485 module. The RS485 module is used to realize the communication between the MCU chip and the host computer, which has mature technology and simple structure.

[0021] Through the above technical solution, the beneficial effects of the utility model are:

[0022] The utility model realizes the data collection of multiple meters for electricity, water and heating. A MUC chip is provided, and the MUC chip is respectively connected to a current detection circuit, a flow detection circuit and a heat detection circuit through an instrument amplifier to collect detection parameters of the current detection circuit, the flow detection circuit and the heat detection circuit. The MUC chip uploads the detection parameters to the host computer through a communication module. The circuit structure is simple and easy to implement. A current module is also provided to power the hardware module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is an electrical schematic diagram of a multi-meter-in-one data acquisition system.

[0024] Figure numbers: 1 is MUC chip, 2 is instrument amplifier, 3 is DC step-down circuit, 4 is host computer, 5 is single-phase current acquisition chip, 6 is detection resistor, 7 is ultrasonic flow meter, 8 is temperature sensor, 9 is LED display unit, 10 is button unit, 11 is transformer, 12 is rectifier bridge, 13 is communication module. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] Example 1

[0027] like Figure 1 As shown, a multi-meter integrated data acquisition system includes a meter body, a current detection circuit, a flow detection circuit and a heat detection circuit.

[0028] It also includes a MUC chip 1, a power module and a communication module 13;

[0029] The ADC port of the MUC chip 1 is connected to an instrument amplifier 2, and the MUC chip 1 is respectively connected to a current detection circuit, a flow detection circuit and a heat detection circuit through the instrument amplifier 2;

[0030] The power module includes a rectifier circuit and a DC step-down circuit 3;

[0031] The communication module 13 is in communication connection with the MUC chip 1 , and the MUC chip 1 is connected to the host computer 4 via the communication module 13 .

[0032] In this embodiment, as shown in the figure, the MUC chip 1 uses an STM32 microcontroller. The instrument amplifier 2 uses an INA128 instrument amplifier, and the number of INA128 instrument amplifiers is 3, corresponding to the connection of the current detection circuit, the flow detection circuit and the heat detection circuit.

[0033] The current detection circuit includes a single-phase current acquisition chip 5 and a detection resistor 6. The detection resistor 6 is used to detect current. The detection resistor 6 is connected to the instrument amplifier 2 through a filter circuit. The single-phase current acquisition chip 5 is connected to the MUC chip 1 through an SPI serial port.

[0034] In this embodiment, the single-phase current acquisition chip 5 adopts the 5BL0972 chip, which can measure parameters such as current, voltage effective value, active power, active electric energy, etc., and can output fast current effective value (for overvoltage, overcurrent and other fault detection), waveform output and other functions.

[0035] The flow detection circuit includes an ultrasonic flow meter 7 , and an output end of the ultrasonic flow meter 7 is connected to an input end of the instrument amplifier 2 .

[0036] In this embodiment, the ultrasonic flow meter 7 adopts the TDC-GP22 chip.

[0037] The heat detection circuit includes a temperature sensor 8 , and an output end of the temperature sensor 8 is connected to an input end of the instrument amplifier 2 .

[0038] Preferred as Figure 1 As shown, the MUC chip 1 is communicatively connected to an LED display unit 9, and the input end of the MUC chip 1 is also connected to a key unit 10.

[0039] The MUC chip 1 and the LED display unit 9 are connected via a UART serial port.

[0040] Preferably, the rectifier circuit includes a transformer 11 and a rectifier bridge 12, the primary side of the transformer 11 is connected to the 220V AC power supply, and the secondary side is connected to the rectifier bridge 12, the output end of the rectifier bridge 12 is connected to the DC step-down circuit 3, and the DC voltage circuit includes a voltage conversion chip, and the voltage conversion chip is respectively connected to the MUC chip 1 current detection circuit, flow detection circuit, heat detection circuit and communication module.

[0041] Preferably, the communication module 13 includes an RS485 module.

[0042] In this embodiment, the hardware circuit is provided with a housing.

[0043] During operation, the user checks one of the electricity, water and heat usage through the LED display unit 9 and detects the electricity, water and heat usage through the key unit 10 .

[0044] The MCU chip 1 collects the detection signals of the single-phase current acquisition chip 5 and the detection resistor 6 respectively. The single-phase current acquisition chip 5 collects the user's power consumption, and the detection resistor 6 detects the power consumption status of the hardware circuit, which is used to provide a hardware basis for judging the hardware circuit failure. The MCU chip 1 uploads the electrical signal output by the single-phase current acquisition chip 5 to the upper host computer 4 through the communication module 13.

[0045] The ADC pin of the MCU chip 1 inputs the detection signal of the ultrasonic flow meter 7 and the detection signal of the temperature sensor 8, and then counts the water consumption and heating consumption, and uploads them to the upper host computer 4 through the communication module 13.

[0046] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A multi-meter integrated data acquisition system, comprising a meter body, a current detection circuit, a flow detection circuit and a heat detection circuit, characterized in that: It also includes a MUC chip (1), a power module and a communication module (13); The ADC port of the MUC chip (1) is connected to an instrument amplifier (2), and the MUC chip (1) is respectively connected to a current detection circuit, a flow detection circuit and a heat detection circuit through the instrument amplifier (2); The power module comprises a rectifier circuit and a DC step-down circuit (3); The communication module (13) is in communication connection with the MUC chip (1), and the MUC chip (1) is connected to the host computer (4) via the communication module (13).

2. The multi-meter integrated data acquisition system according to claim 1, characterized in that: The current detection circuit comprises a single-phase current acquisition chip (5) and a detection resistor (6), wherein the detection resistor (6) is used to detect current, the detection resistor (6) is connected to the instrument amplifier (2) via a filter circuit, and the single-phase current acquisition chip (5) is connected to the MUC chip (1) via an SPI serial port.

3. The multi-meter integrated data acquisition system according to claim 1, characterized in that: The flow detection circuit comprises an ultrasonic flow meter (7), the output end of the ultrasonic flow meter (7) being connected to the input end of the instrument amplifier (2).

4. The multi-meter integrated data acquisition system according to claim 3, characterized in that: The heat detection circuit comprises a temperature sensor (8), wherein an output end of the temperature sensor (8) is connected to an input end of the instrument amplifier (2).

5. The multi-meter-in-one data acquisition system according to claim 1, characterized in that: The MUC chip (1) is communicatively connected to an LED display unit (9), and the input end of the MUC chip (1) is also connected to a key unit (10).

6. The multi-meter integrated data acquisition system according to claim 1, characterized in that: The rectifier circuit comprises a transformer (11) and a rectifier bridge (12); the transformer (11) has a primary side connected to a 220V mains supply and a secondary side connected to the rectifier bridge (12); an output end of the rectifier bridge (12) is connected to a DC step-down circuit (3); the DC step-down circuit (3) comprises a voltage conversion chip; the voltage conversion chip is respectively connected to a current detection circuit, a flow detection circuit, a heat detection circuit and a communication module (13) of a MUC chip (1).

7. The multi-meter integrated data acquisition system according to claim 1, characterized in that: The communication module (13) comprises an RS485 module.

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