A new type of measuring and controlling instrument

Abstract

The present invention discloses a novel measuring and controlling instrument, which relates to the technical field of measuring and controlling instruments, and aims to solve the problem that short circuit overload often occurs in the circuit measuring and controlling instruments in the prior art during use, which may cause damage to the instrument or the fuse to blow and stop working, thereby affecting the use and detection of the circuit. A detection body is arranged on one side of the main body of the electric power measuring and controlling instrument, a communication terminal is arranged on the top of the detection body, an RS485 interface is arranged on one side of the communication terminal, and there are multiple RS485 interfaces, an outer protective shell is arranged on one side of the detection body, a data display screen is arranged inside the outer protective shell, a selection control button is arranged below the data display screen, and there are multiple selection control buttons, the input end of the communication terminal is connected to the output end of the main end power module, and the output end of the communication terminal is connected to the input end of the voltage detection module and the current detection module.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring and controlling instruments, in particular to a novel measuring and controlling instrument. Background Art

[0002] Intelligent measurement and control instruments have the functions of accurate power parameter measurement, power quality parameter monitoring and analysis, power energy statistics, over-limit alarm, maximum value recording and event sequence recording. The I / O module is used to monitor the status of on-site equipment, remotely control and output alarms. The measurement and control instrument provides a standard communication interface and can choose dual communication network redundancy. It also provides functions such as power pulse output and 4~20mA analog output. The measurement and control device application function modular design, user-defined fixed value system, can drive analog and logical fixed value alarms. The large-screen LCD display interface allows users to easily obtain power parameters. The powerful functional configuration provides users with flexible options for building power monitoring, power quality monitoring and analysis solutions.

[0003] However, the existing circuit measurement and control instruments often have short circuit overload during use, which may cause instrument damage or fuse blowing and stop working, thus affecting the circuit usage detection; therefore, it does not meet the existing needs, and we have proposed a new type of measurement and control instrument. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of measuring and controlling instrument to solve the problem that the circuit measuring and controlling instrument proposed in the above background technology often has short circuit overload during use, which may cause instrument damage or fuse blowing and stop working, thereby affecting the use and detection of the circuit.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of measuring and controlling instrument, comprising an electric power measuring and controlling instrument main body, a detection body is arranged on one side of the electric power measuring and controlling instrument main body, a wiring module is arranged above the detection body, an RS485 interface is arranged on one side of the wiring module, and there are multiple RS485 interfaces, an outer protective shell is arranged on one side of the detection body, a data display screen is arranged inside the outer protective shell, and a selection control button is arranged below the data display screen, and there are multiple selection control buttons.

[0006] Preferably, the input end of the wiring module is connected to the output end of the main power supply module, the output end of the wiring module is connected to the input end of the voltage detection module and the current detection module, the output end of the voltage detection module and the current detection module are connected to the input end of the A / D converter, the output end of the A / D converter is connected to the input end of the MCU control module, the output end of the MCU control module is connected to the input end of the peak recording module, the local area network module and the data display screen, the output end of the local area network module is connected to the input end of the control terminal, and the output end of the control terminal is connected to the input end of the remote control module.

[0007] Preferably, the model of the A / D converter is AD9762ARUZRL7, the model of the MCU control module is STM32F407VGT6, and the model of the remote control module is HX-R12Q.

[0008] Preferably, the detection body is fixedly connected to a wiring module, and the wiring module is electrically connected to an RS485 interface.

[0009] Preferably, the detection body is connected to the outer protective shell by screws, and the detection body is connected to the outer protective shell by a slot.

[0010] Preferably, the main body of the power measurement and control instrument includes an interruption protection circuit, which includes an MCU control unit, rheostats R1 and R2, a sliding rheostat R3, a circuit diode D1, circuit transistors E1 and E2 and a fuse, the rheostats R1 and R2 are connected to the main power supply through the fuse, the sliding rheostat R3 is connected in series with the fuse and the main power supply, and the sliding rheostat R3 is connected to the MCU control unit through the circuit diode D1.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention protects the internal components of the instrument from damage by disconnecting the internal fuse of the instrument when an overload occurs during the power connection process. At this time, the resistance of the series-connected sliding rheostat R3 will also increase to the maximum along with the power supply, so that the current cannot pass. When the power is restored, the sliding rheostat R3 will restore the original resistance. Because the fuse has been blown, the current cannot pass. However, the sliding rheostat R3 can connect the circuit after restoring the original resistance, so that the circuit continues to be put into normal use. Afterwards, only the fuse needs to be replaced. Moreover, the sliding rheostat R3 itself is connected in series to the fuse and the main power supply, so that the instrument's detection data of the power supply will not be affected during normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall front view of the present invention;

[0014] Figure 2 It is a circuit detection flow chart of the present invention;

[0015] Figure 3 Schematic diagram of the interrupt protection circuit of the present invention.

[0016] In the figure: 1. Power measurement and control instrument body; 2. Detection body; 3. Wiring module; 4. RS485 interface; 5. Outer protective shell; 6. Data display screen; 7. Selection control button; 8. Main power module; 9. Voltage detection module; 10. Current detection module; 11. A / D converter; 12. Local area network module; 13. MCU control module; 14. Peak value recording module; 15. Control terminal; 16. Remote control module. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] See also Figure 1-3 An embodiment of the present invention is as follows: a new type of measuring and controlling instrument comprises an electric power measuring and controlling instrument main body 1, a detection body 2 is arranged on one side of the electric power measuring and controlling instrument main body 1, a wiring module 3 is arranged above the detection body 2, an RS485 interface 4 is arranged on one side of the wiring module 3 to ensure the applicability of the instrument, and there are multiple RS485 interfaces 4, an outer protective shell 5 is arranged on one side of the detection body 2 to protect the display screen from damage, a data display screen 6 is arranged inside the outer protective shell 5 to feedback detection data information, a selection control button 7 is arranged below the data display screen 6, and there are multiple selection control buttons 7 to facilitate movement adjustment and control.

[0019] Furthermore, the input end of the wiring module 3 is connected to the output end of the main power supply module 8 to connect the main power supply line. The output end of the wiring module 3 is connected to the input end of the voltage detection module 9 and the current detection module 10 to detect the voltage and current in the power supply line. The output end of the voltage detection module 9 and the current detection module 10 is connected to the input end of the A / D converter 11, and the electrical signal is converted into output data through the converter. The output end of the A / D converter 11 is connected to the input end of the MCU control module 13, and the output end of the MCU control module 13 is connected to the peak recording module 14, which can record historical power supply data. The local area network module 12 is connected to the input end of the data display screen 6, and the output end of the local area network module 12 is connected to the input end of the control terminal 15, and the output end of the control terminal 15 is connected to the input end of the remote control module 16, so as to realize the remote control function of the instrument.

[0020] Furthermore, the model of the A / D converter 11 is AD9762ARUZRL7, with rapid conversion efficiency, the model of the MCU control module 13 is STM32F407VGT6, and the model of the remote control module 16 is HX-R12Q.

[0021] Furthermore, the detection body 2 is fixedly connected to the wiring module 3 to enhance stability, and the wiring module 3 is electrically connected to the RS485 interface 4 .

[0022] Furthermore, the detection body 2 and the outer protective shell 5 are connected by screws, and the detection body 2 and the outer protective shell 5 are connected by a slot, which is convenient for installation and fixation.

[0023] Furthermore, the main body 1 of the electric power measurement and control instrument includes an interruption protection circuit, which includes an MCU control unit, rheostats R1 and R2, a sliding rheostat R3, a circuit diode D1, circuit transistors E1 and E2 and a fuse. The rheostats R1 and R2 are connected to the main power supply through the fuse. When an overload occurs, the fuse will disconnect to protect the circuit from damage. The sliding rheostat R3 is connected in series with the fuse and the main power supply. The sliding rheostat R3 is connected in series to the main power supply, which will not affect the final detection data of the instrument. The sliding rheostat R3 is connected to the MCU control unit through the circuit diode D1.

[0024] Working principle: When in use, connect the required main power line to the RS485 interface 4 on one side of the wiring module 3. After the line is connected, start the instrument by selecting the control button 7, and detect the voltage and current in the power line through the internal voltage detection module 9 and current detection module 10. Then, the electrical signal is converted into an output signal through the A / D converter 11 and transmitted to the MCU control module 13. The MCU control module 13 then records the historical power data through the peak recording module 14, and displays it on the data display screen 6. At the same time, the data is uploaded to the local area network module 12. The signal is transmitted to the control terminal 15, and the staff can control and adjust the instrument through the control terminal 15 and the remote control module 16, so as to realize the remote control function of the instrument. When an overload occurs during the power connection process, the internal fuse of the instrument will be disconnected to protect the circuit from damage. At this time, the resistance of the series sliding rheostat R3 will increase to the maximum with the power supply. When the power is restored, the sliding rheostat R3 will restore its original resistance. Because the fuse has been blown, the current cannot pass through. However, the sliding rheostat R3 can connect the circuit after restoring its original resistance, so that the circuit can continue to be put into normal use. Afterwards, only the fuse needs to be replaced.

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A new type of measuring and controlling instrument, comprising an electric power measuring and controlling instrument body (1), characterized in that: A detection body (2) is provided on one side of the main body (1) of the electric power measurement and control instrument; a wiring module (3) is provided above the detection body (2); an RS485 interface (4) is provided on one side of the wiring module (3); and there are a plurality of RS485 interfaces (4); an outer protective shell (5) is provided on one side of the detection body (2); a data display screen (6) is provided inside the outer protective shell (5); and a selection control button (7) is provided below the data display screen (6); and there are a plurality of selection control buttons (7); The power measurement and control instrument body (1) comprises an interruption protection circuit, which comprises an MCU control module (13), resistors R1 and R2, a sliding rheostat R3, a circuit diode D1, circuit transistors E1 and E2, and a fuse, wherein the resistors R1 and R2 are respectively connected to the circuit transistors E1 and E2, and are connected to a main power supply via the fuse, the two fixed ends of the sliding rheostat R3 are short-circuited, one fixed end is connected to the main power supply, and the other fixed end is connected to the fuse, and the moving end of the sliding rheostat R3 is connected to the MCU control module (13) via the circuit diode D1; The input end of the wiring module (3) is connected to the output end of the main power module (8), the output end of the wiring module (3) is connected to the input end of the voltage detection module (9) and the current detection module (10), the output end of the voltage detection module (9) and the current detection module (10) is connected to the input end of the A / D converter (11), and the output end of the A / D converter (11) is connected to the input end of the MCU control module (13).

2. A new type of measuring and controlling instrument according to claim 1, characterized in that: The output end of the MCU control module (13) is connected to the input end of the peak value recording module (14), the local area network module (12) and the data display screen (6); the output end of the local area network module (12) is connected to the input end of the control terminal (15); and the output end of the control terminal (15) is connected to the input end of the remote control module (16).

3. A new type of measuring and controlling instrument according to claim 2, characterized in that: The model of the A / D converter (11) is AD9762ARUZRL7, the model of the MCU control module (13) is STM32F407VGT6, and the model of the remote control module (16) is HX-R12Q.

4. A new type of measuring and controlling instrument according to claim 1, characterized in that: The detection body (2) is fixedly connected to the wiring module (3), and the wiring module (3) is electrically connected to the RS485 interface (4).

5. A new type of measuring and controlling instrument according to claim 1, characterized in that: The detection body (2) and the outer protective shell (5) are connected via screws, and the detection body (2) and the outer protective shell (5) are connected via a slot.

Images