Low-voltage transformer area electric energy meter communication module mixed loading test structure

Abstract

The utility model relates to a low-voltage transformer area electric energy meter communication module mixed loading test structure, and belongs to the technical field of distribution transformer low-voltage power supply. According to the technical scheme, a host is fixed on an arm of a user; a detected routing module installation space is arranged between the first routing module interface and the second routing module interface, the two ends of the detected routing module are connected with the first routing module interface and the second routing module interface in an inserted mode respectively, the first routing module interface is a routing module strong current interface and provides power for the routing module, and the second routing module interface is a routing module strong current interface. The second routing module interface is a routing module weak current interface and provides a data transmission channel between the routing module and the host. The beneficial effects of the utility model are that the device is convenient to carry and operate, can test the model and the number ratio of the mixed communication modules in the low-voltage transformer area on site, provides data basis for the communication modules replaced by unified manufacturers subsequently, and guarantees the normal operation of an intelligent power grid and the accuracy of data acquisition after the modules are replaced by the unified manufacturers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a low -voltage table area electric energy meter communication module mixed loading test structure belongs to distribution transformer low -voltage power supply technical field. BACKGROUND

[0002] Low-voltage table area refers to the area of low-voltage power supply of distribution transformer, including 380V system and distribution transformer. This area is called "area", and "table" refers to transformer, that is, variable table. The low-voltage table area is divided in order to manage electricity more normatively and scientifically, including personnel division of labor, equipment maintenance, power calculation and line loss statistics. Through the division of low-voltage table area, the power enterprise can more effectively manage the power supply system to ensure the stability and reliability of power supply. At the same time, this also helps to improve the safety and efficiency of power use, reduce power loss and failure rate. In actual operation, the power department will divide the low-voltage table area according to geographical location, number of users and power demand and other factors. Each table area will be equipped with corresponding equipment and personnel to ensure the normal operation and maintenance of the power supply system. In addition, through regular inspection and maintenance, the power department can also find and handle potential safety hazards in time to ensure the safety of power use.

[0003] With the popularization of smart grid, the number of smart meters has increased significantly. The communication module in the smart meter is responsible for data interaction with the power grid system, and its quality and compatibility are crucial. The low-voltage table area realizes data acquisition by the router in the centralized meter reading terminal and the communication module in each electric energy meter. Each communication module needs to be interconnected to realize data connection. At present, the existing technology is: there are many manufacturers of communication modules producing different types of communication modules, and each has its own communication protocol. In this way, during the process of adding electric energy meters and communication modules in the daily low-voltage table area or replacing faulty communication modules in electric energy meters, different manufacturers' communication modules may be installed in the same low-voltage table area, resulting in mixed installation of communication modules. Due to the compatibility of different communication protocols, the communication of electric energy meters will be unstable, data transmission will be wrong or even impossible, which will seriously affect the normal operation of smart grid and the accuracy of data acquisition. Therefore, the field urgently needs a device that can test the mixed type and quantity ratio of low-voltage table area electric energy meter communication modules, which is convenient to carry and operate, provides data support for subsequent unified replacement of communication modules, and effectively solves the above problems after replacing the communication modules with unified manufacturers. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of low voltage table area electric energy meter communication module mixed loading test structure, it is convenient to carry out operation, can be in the field test low voltage table area in mixed loading communication module model and quantity proportion, provide data basis for subsequent replacement for unified manufacturer communication module, module is replaced for unified manufacturer, guarantee the normal operation of intelligent power grid and the accuracy of data acquisition, solve the above problems existing in background art.

[0005] The technical scheme of the utility model is:

[0006] A kind of low voltage table area electric energy meter communication module mixed loading test structure, containing host computer and the mainboard placed in the inside of host computer;Host computer is equipped with the interface of routing module, LED display screen, button, USB host interface and power supply respectively connected with mainboard;The back of host computer is equipped with steering adjustment knob, the left and right sides of steering adjustment knob are equipped with arm strap magic tape one and arm strap magic tape two respectively;By adjusting the knob direction of steering adjustment knob, arm strap magic tape one and arm strap magic tape two are cooperated and tightly fitted on the arm of user, host computer is fixed on the arm of user;The interface of routing module contains the interface of routing module one and the interface of routing module two arranged, and the interface of routing module one and the interface of routing module two are routing module installation space to be detected, the interface of routing module one and the interface of routing module two are respectively inserted with the interface of routing module one and the interface of routing module two at both ends of routing module to be detected, the interface of routing module one is the strong current interface of routing module, provides power supply for routing module, the interface of routing module two is the weak current interface of routing module, provides data transmission channel between routing module and host computer;The power supply contains power supply interface, on-site power supply line, power supply line clamp and power supply line clamp, and the power supply interface is located on host computer and connected with mainboard, one end of on-site power supply line is connected with power supply interface, the other end is connected with power supply line clamp and power supply line clamp, and power is taken from the field.The internal routing module of on-site running centralized meter reading terminal is taken down, installed in the routing module installation space to be detected of host computer, host computer is connected with notebook computer using computer data connection line, on-site power supply line is connected with host computer, power supply line clamp and power supply line clamp are connected with firewire and zero line of centralized meter reading terminal respectively to take power;Whether each part is connected successfully is determined by button operation on host computer and observation LED display screen, after successful connection, the proportion of each manufacturer and quantity of communication module in table area can be viewed through the known test program installed on notebook computer, to provide data support for subsequent replacement of communication module.

[0007] Further, the host computer is provided with a loudspeaker and a bar code identification confirmation card slot above the routing module installation space to be detected.

[0008] Further, the button includes a determination button, a right button, an up button, a left button, a down button and a cancel button.

[0009] Further, the live wire pliers and the zero line pliers are connected with the centralized meter reading terminal live wire terminal screw and the centralized meter reading terminal zero line terminal screw of the centralized meter reading terminal respectively.

[0010] Further, the known test program installed on the notebook computer is a test program APP, and the notebook computer is provided with a USB computer interface and is connected with a USB host interface on the host through a computer data connection line. The computer data connection line is wound on a computer data connection line winding shaft.

[0011] Further, the mainboard comprises an interface circuit, an analog-to-digital conversion module (ADC), a digital signal processing module (DSP), a processor chip (ARM), a display driving chip, a random storage chip (RAM), a read-only memory (ROM), a power conversion circuit and a user interface circuit.

[0012] Further, the centralized meter reading terminal is matched with the smart electric energy meter. The centralized meter reading terminal is a low-voltage area in-charge data collector of the smart electric energy meter in a reading area, and the communication modules in the smart electric energy meter are communicated with each other through a line carrier function, so as to collect data such as archives, value, voltage, current and power in the meter, and report the data through an uplink channel, and play a role in data collection and transfer in the area.

[0013] The utility model discloses the beneficial effects: convenient to carry operation can be in the field test low -voltage area in -charge communication module model and quantity proportion, for the subsequent replacement for the data basis that provides for unified factory communication module, module replacement is unified factory, guarantees the normal operation of smart grid and the accuracy of data acquisition. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structure schematic drawing for the utility model embodiment;

[0015] Figure 2 It is whole schematic drawing for the utility model embodiment;

[0016] Figure 3 It is notebook computer schematic drawing for the utility model embodiment needing to be used in pairs;

[0017] Figure 4 It is host arm strap magic tape schematic drawing for the utility model embodiment;

[0018] Figure 5 It is centralized meter reading terminal schematic drawing for the utility model embodiment;

[0019] Figure 6 It is smart electric energy meter schematic drawing for the utility model embodiment;

[0020] Figure 7The utility model discloses an embodiment mainboard internal schematic diagram;

[0021] In the drawing: routing module interface one 1, routing module interface two 2, LED display screen 3, determine button 4, right button 5, up button 6, left button 7, down button 8, cancel button 9, USB host interface 10, reserved interface 11, power supply interface 12, on-site power supply wire 13, power supply live wire pliers 14, power supply zero line pliers 15, routing module 16, computer data connection wire 17, notebook computer 18, centralized meter reading terminal 19, centralized meter reading terminal live wire connection screw 21, centralized meter reading terminal zero line connection screw 22, test program APP 23, mainboard 24, host 25, USB computer interface 26, smart electric energy meter 27, electric energy meter communication module 28, centralized meter reading terminal face screen cover 29, interface circuit 30, analog-digital conversion module (ADC) 31, digital signal processing module (DSP) 32, processor chip (ARM) 33, display drive chip 34, random storage chip (RAM) 35, read-only memory (ROM) 36, power conversion circuit 37, user interface circuit 38, loudspeaker 39, bar code identification confirmation card slot 40, arm bandage magic tape one 41, arm bandage magic tape two 42, steering adjustment knob 43, computer data connection wire take-up 44, centralized meter reading terminal bar code 45. DETAILED DESCRIPTION

[0022] The utility model is further explained by examples in combination with the drawings.

[0023] Refer to the drawings Figures 1-5The embodiment provides a low-voltage area electric energy meter communication module mixed test structure, which comprises a host 25 and a mainboard 24 arranged in the host 25; the host 25 is provided with a routing module interface, an LED display screen 3, a key, a USB host interface 10 and a power supply, which are connected with the mainboard 24 respectively; the back of the host 25 is provided with a steering adjusting knob 43, and the left and right sides of the steering adjusting knob 43 are respectively provided with an arm binding magic tape one 41 and an arm binding magic tape two 42; the arm binding magic tape one 41 and the arm binding magic tape two 42 are tightly sleeved on the arm of a user by adjusting the knob direction of the steering adjusting knob 43, so that the host 25 is fixed on the arm of the user; the routing module interface comprises a routing module interface one 1 and a routing module interface two 2 arranged in sequence, and a detected routing module 16 installation space is arranged between the routing module interface one 1 and the routing module interface two 2; the two ends of the detected routing module 16 are respectively inserted with the routing module interface one 1 and the routing module interface two 2; the routing module interface one 1 is a routing module AC interface, which provides power supply for the routing module 16; the routing module interface two 2 is a routing module weak current interface, which provides a data transmission channel between the routing module 16 and the host 25; the power supply comprises a power supply interface 12, a field power taking line 13, a power taking fire clamp 14 and a power taking zero line clamp 15; the power supply interface 12 is located on the host 25 and connected with the mainboard 24; one end of the field power taking line 13 is connected with the power supply interface 12, and the other end is connected with the power taking fire clamp 14 and the power taking zero line clamp 15 to take power supply from the field; the internal routing module 16 of a field running centralized meter reading terminal 19 is taken down and installed in the detected routing module 16 installation space of the host 25; the host 25 is connected with a notebook computer 18 through a computer data connection line 17; the field power taking line 13 is connected with the host 25; the power taking fire clamp 14 and the power taking zero line clamp 15 are respectively connected with the fire wire and the zero wire of the centralized meter reading terminal 19 to take power supply; whether each part is successfully connected is determined through the key operation on the host and the observation of the LED display screen 3; after successful connection, the proportion and the number of communication modules of each manufacturer in the area can be checked through a known test program installed on the notebook computer 18, so as to provide data support for subsequent unified replacement of the communication modules.

[0024] Referring to the drawings Figure 1 The host 25 is provided with a loudspeaker 39 and a bar code identification confirmation card slot 40, and the bar code identification confirmation card slot 40 is located above the detected routing module 16 installation space.

[0025] Referring to the drawings Figure 1 The key comprises a determination key 4, a right key 5, an up key 6, a left key 7, a down key 8 and a cancel key 9.

[0026] Referring to the drawings Figure 2 and 5The live wire pliers 14 and the zero line pliers 15 are connected to the centralized meter reading terminal live wire terminal screw 21 and the centralized meter reading terminal zero line terminal screw 22 of the centralized meter reading terminal 19 respectively.

[0027] Referring to the drawings Figure 2 and 3 The known test program installed on the notebook computer 18 is a test program APP 23, and the notebook computer 18 is provided with a USB computer interface 26 connected with the USB host interface 10 on the host 25 through the computer data connection line 17. The computer data connection line 17 is wound on the computer data connection line winding shaft 44.

[0028] Referring to the drawings Figure 7 The mainboard 24 comprises an interface circuit 30, an analog-to-digital conversion module (ADC) 31, a digital signal processing module (DSP) 32, a processor chip (ARM) 33, a display driving chip 34, a random storage chip (RAM) 35, a read-only memory (ROM) 36, a power conversion circuit 37 and a user interface circuit 38 connected with each other; the above-mentioned circuits, modules and the like are all known and commonly used technologies in the art.

[0029] The routing module interface one 1 and the routing module interface two 2 are interfaces on the host 25 connected with the routing module 16, one of which is a strong current interface of the routing module, which provides power supply for the routing module, and the other of which is a weak current interface of the routing module, which provides a data transmission channel between the routing module and the host. Through the interfaces located at both ends, the routing module 16 can also be quickly aligned and fixed.

[0030] The centralized meter reading terminal 19 is a low-voltage area collector responsible for collecting various data of intelligent electric energy meters in the area, which communicates with each other through the line carrier function, collects data such as archives, indications, voltages, currents, powers and the like in the meter, and reports them through the uplink channel, thereby playing a role in data aggregation and transmission in the area.

[0031] The routing module 16 is installed in the centralized meter reading terminal 19, realizes storage of electric energy meter archives, communicates with each other through the communication modules in each intelligent electric energy meter, realizes communication between the centralized meter reading terminal and the electric energy meter, and realizes data saving of the communication module.

[0032] The bar code recognition confirmation card slot 40 is used to avoid walking into the wrong area when detecting the communication module situation of an electric meter in a certain area on site, and the bar code card of the centralized meter reading terminal to be detected is put in the bar code recognition confirmation card slot 40 in advance, and is checked and confirmed with the bar code on the centralized meter reading terminal 19 on site.

[0033] Referring to the drawings Figure 4The arm strap magic tape one 41, the arm strap magic tape two 42 and the steering adjusting knob 43 are installed below the main machine 25. When the staff needs to climb the insulating ladder to operate in the higher JP cabinet, the situation of inconvenient operation of one hand holding the insulating ladder and the other hand holding the main machine is avoided. At this time, the arm strap magic tape one 41 and the arm strap magic tape two 42 are tightly wound around the left arm, the main machine is adjusted towards through the steering adjusting knob 43, and the right hand is operated while the left hand holds the insulating ladder, so that the work on the insulating ladder is realized safely and conveniently.

[0034] Referring to the drawings Figure 2 The computer data connection line reel 44 is a retractable reel arranged in the middle of the computer data connection line 17. When the staff climbs up or is far away from the notebook computer, the length of the data line is changed through the computer data connection line reel 44.

[0035] When the mainboard 24 is detected, the mainboard reads the electrical parameters and the communication signals, and transmits them to the computer test program APP 23 through the computer data connection line 17.

[0036] The interface circuit 30 is connected with the routing module interface one 1, the routing module interface two 2 and the computer data connection line 17; its function is to connect external devices or communication lines and receive signals to be analyzed.

[0037] The analog-to-digital conversion module (ADC) 31 is an ADS8364 chip connected with the digital signal processing module (DSP) 32; its function is to convert analog intermediate frequency signals into digital signals for subsequent digital signal processing.

[0038] The digital signal processing module (DSP) 32 is a Texas Instruments (TI) TMS320C6000 chip connected with the processor chip (ARM) 33; its function is to decode, analyze and protocol analyze the digital signals.

[0039] The processor chip (ARM) 33 is an S3C2410A chip connected with the digital signal processing module (DSP) 32, the display driving chip 34, the random storage chip (RAM) 35 and the read-only memory (ROM) 36; its function is to serve as the control core of protocol analysis, to be responsible for coordinating the work of each module, executing user instructions, controlling the signal processing flow and communicating with external devices.

[0040] The display driving chip 34 is a GC9106 chip connected with the processor chip (ARM) 33 and the LED display screen 3; its function is to convert the data processed by the microprocessor into signals suitable for display.

[0041] The random storage chip (RAM) 35 is Samsung's K4B4G1646Q chip, which is connected with the processor chip (ARM) 33 and the read-only memory (ROM) 36, and its function is to temporarily store data, operation results and program variables during signal processing.

[0042] The read-only memory (ROM) 36 is Intel D8749HD chip, which is connected with the processor chip (ARM) 33 and the random storage chip (RAM) 35, and its function is to store the start program of protocol analysis, operating system, basic setting parameters and calibration data, etc.

[0043] The power conversion circuit 37 is connected with the power supply interface 12 and the field power supply line 13, and its function is to convert the external input power into different voltage levels of direct current power suitable for the operation of each module of the mainboard, and to provide stable power supply for the signal processing unit, the display and control unit, the storage unit, etc.

[0044] The user interface circuit 38 is connected with the determination button 4, the right button 5, the up button 6, the left button 7, the down button 8 and the cancel button 9, and its function is to receive the operation instructions of the user to realize the parameter setting, function selection and other operations in the host.

[0045] The test program APP 23 analyzes and processes the transmitted data, first determines the communication protocol type of the communication module through the communication protocol analysis algorithm, then retrieves the standard electrical parameters of the communication module of this type from the storage data, calculates the proportion of each type of communication module by calculating the number of each communication protocol, and broadcasts it through the loudspeaker 39.

[0046] The operation steps of the embodiment are as follows:

[0047] First, fix the arm strap magic tape one 41 and the arm strap magic tape two 42 on the user's arm at the scene, turn the adjustment knob 43, and adjust the orientation of the host 25. Check and compare the bar code recognition confirmation card slot 40 to confirm whether the bar code on the centralized meter reading terminal 19 is consistent with the centralized meter reading terminal bar code 45 on the centralized meter reading terminal 19.

[0048] Second, open the centralized meter reading terminal face screen cover 29 of the centralized meter reading terminal 19, take out the routing module 16 in the centralized meter reading terminal 19, and install it with the routing module interface one 1 and the routing module interface two 2.

[0049] Third, connect one end of the computer data connection line 17 with the USB host interface 10 and the other end with the USB computer interface 26, adjust the computer data connection line take-up reel 44 to ensure the appropriate length of the connection line, and open the test program APP 23 on the notebook computer 18.

[0050] Fourth step, the field of electricity line 13 and power supply interface 12 connected, take electricity fire clamp 14 in centralized meter reading terminal 19 centralized meter reading terminal fire wire screw 21, take electricity zero line clamp 15 in centralized meter reading terminal 19 centralized meter reading terminal zero line connection screw 22.

[0051] The fifth step, by operation to determine the key 4, right button 5, up button 6, left button 7, down button 8, cancel button 9 button and observe the LED display 3 display components have been successfully connected.

[0052] The sixth step, start test program APP23, centralized meter reading terminal 19 signal through the cable into the mainboard 24 interface circuit 30, the signal through the analog to digital conversion module (ADC) 31 into digital signal conversion analog intermediate frequency signal, the signal is then transmitted into the digital signal processing module (DSP) 32, the signal after digitization data decoding, analysis and protocol analysis. Analysis of the signal through the random storage chip (RAM) 35 temporary storage, through the processor chip (ARM) 33 statistics signal type and quantity can be analyzed out of each manufacturer communication module quantity and proportion, and through the loudspeaker 39 broadcast out.

[0053] The seventh step, after the test is completed, close the test program APP23, disconnect the power, and disassemble the connection of each part.

Claims

1. A low-voltage transformer area electric energy meter communication module mixed installation test structure, characterized in that: The utility model provides a kind of centralized meter reading terminal, including host computer (25) and mainboard (24) placed in host computer (25) inside;Host computer (25) is equipped with respectively with mainboard (24) connection's routing module interface, LED display screen (3), button, USB host interface (10) and power supply;The back of host computer (25) is equipped with steering adjustment knob (43), and the left and right sides of steering adjustment knob (43) are equipped with arm strap magic tape one (41) and arm strap magic tape two (42) respectively;By adjusting the knob direction of steering adjustment knob (43), arm strap magic tape one (41) and arm strap magic tape two (42) are cooperated and tightly wrapped on user's arm, and host computer (25) is fixed on user's arm;The routing module interface includes arranged routing module interface one (1) and routing module interface two (2), and the routing module interface one (1) and the routing module interface two (2) are the installation space of the routing module (16) to be detected between, the routing module (16) to be detected both ends are respectively inserted with routing module interface one (1) and routing module interface two (2), and routing module interface one (1) is routing module strong current interface, and it provides power supply for routing module (16), and routing module interface two (2) is routing module weak current interface, and it provides data transmission channel between routing module (16) and host computer (25);The power supply includes power supply interface (12), on-site power supply line (13), electricity taking red wire pliers (14) and electricity taking zero line pliers (15), and power supply interface (12) is located on host computer (25) and is connected with mainboard (24), and on-site power supply line (13) one end is connected with power supply interface (12), and the other end is connected with electricity taking red wire pliers (14) and electricity taking zero line pliers (15).

2. The low-voltage transformer area electric energy meter communication module mixed installation test structure according to claim 1, characterized in that: The host computer (25) is equipped with loudspeaker (39) and bar code identification confirmation card slot (40), and the bar code identification confirmation card slot (40) is located above the installation space of the routing module (16) to be detected. 3.The low-voltage transformer area electric energy meter communication module mixed test structure according to claim 1 or 2, characterized in that: The button includes determination button (4), right button (5), up button (6), left button (7), down button (8) and cancellation button (9).

4. The low-voltage transformer area electric energy meter communication module mixed installation test structure according to claim 1 or 2, characterized in that: The electricity taking red wire pliers (14) and the electricity taking zero line pliers (15) are respectively connected with the centralized meter reading terminal fire line connecting screw (21) and the centralized meter reading terminal zero line connecting screw (22) of centralized meter reading terminal (19).

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