CN112332933A - Testing device and method of portable LoRa communication module networking testing device - Google Patents

Abstract

The invention relates to a portable LoRa communication module networking testing device and a testing method, which solve the problems of time consumption, labor consumption and low testing efficiency in the field investigation and testing process, further simulate the communication working principle of a three-phase imbalance management system, can accurately evaluate the networking communication quality of a field controller and a commutation switch, accurately determine the installation point of the commutation switch and improve the operation effect of the system.

Description

Testing device and method of portable LoRa communication module networking testing device

Technical Field

The invention relates to the technical field related to communication of power supply and distribution equipment, in particular to a testing device and a testing method of a portable LoRa communication module networking testing device in a three-phase imbalance management system.

Background

According to the third 68 th article of the operation and inspection department of the national grid company, the three-phase load imbalance of the power distribution area has adverse effects on the power supply safety, the power supply quality and the economic operation of the power distribution area, the management work of the three-phase load imbalance problem of the power distribution area is determined to be carried out, and the electricity utilization quality of residents is improved. In a 0.4KV low-voltage three-phase four-wire system distribution network, the load is mostly a single-phase load. The difference of resident electricity utilization period and the difference of power consumption size lead to having serious unbalanced load in the net of joining in marriage that designs according to user's quantity average distribution, and unbalanced three-phase governing system can real-time supervision and adjust the load change, the unbalanced three-phase load problem of effectual solution distribution panel district. The three-phase unbalance treatment system mainly comprises a controller and a plurality of phase change switches, wherein the controller and the phase change switches adopt a LoRa communication technology star-shaped networking, the controller is installed at a distribution transformer, and the phase change switches are dispersedly installed at a user load in a transformer area. The controller calculates the load unbalance degree of the transformer area according to the real-time load electrical parameter information uploaded by each phase change switch and the real-time change current information at the distribution transformer, and finally adjusts the action of the phase change switches through a control algorithm to switch the phase, so that the unbalance degree of the whole transformer area is reduced to below 15%. Because low pressure distribution station district site environment, power consumption nature, geographical form are diverse, have proposed higher requirement to loRa wireless communication module. In recent years, the LoRa wireless modem technology is also continuously developed, but due to the inherent defects of the transmission of electromagnetic waves, the LoRa wireless modem technology is easily interfered by the external environment and by the same frequency, and therefore, in the early stage, a survey on the site in terms of communication is required to be performed to determine the specific installation position of the phase change switch. The traditional testing method needs to establish communication with a controller at each phase change switch mounting point, tests the signal strength, is extremely low in efficiency due to the fact that the number of the mounting points is large, sets up an LoRa testing environment at each mounting point in turn in sequence, is large in repeated work, and cannot test the networking communication condition of more than 3 communication modules simultaneously due to the fact that computer hardware resources and site environment are limited, the result of site investigation shrinks to some extent, and the effect of three-phase imbalance treatment can be influenced.

Disclosure of Invention

Based on the above situation in the prior art, the invention provides a portable LoRa communication module networking test device and a test method, so as to solve the problems of time consumption, labor consumption and low test efficiency in the field investigation test process.

In order to achieve the above object, according to one aspect of the present invention, a portable LoRa communication module networking test device is provided, which includes a portable box, a power module, a motherboard bracket and a motherboard module; wherein the content of the first and second substances,

the main board module, the main board bracket and the power supply module are fixedly arranged in the portable box body;

the mainboard module and the power supply module are fixed on the mainboard bracket;

the mainboard module comprises a LoRa module socket, an Ethernet communication interface, a power circuit and a CPU circuit;

the power module is arranged below the mainboard module, comprises a switch power supply, converts the accessed alternating current into direct current, and provides a working power supply for the mainboard module.

Further, the LoRa module socket comprises an LoRa communication module interface.

Further, loRa module socket includes a plurality of loRa communication module interfaces to measure a plurality of loRa communication module's networking simultaneously.

Furthermore, the ethernet communication interface is connected with a computer, and the LoRa communication module acquires data from the analog meter of the computer and feeds the data back to the power distribution terminal CCO, so as to realize the simulation of the field communication of the three-phase unbalanced device.

Further, the switching power supply converts 220V alternating current into 12V direct current and 3.3V direct current.

Furthermore, the portable box body comprises a bottom shell, a storage bag and a coded lock.

According to another aspect of the present invention, there is provided a testing method for the portable LoRa communication module networking testing apparatus according to the first aspect of the present invention, including the steps of:

the power distribution terminal CCO sends out a networking command, and each LoRa communication module is on line;

the power distribution terminal CCO sends out a round reading command, and the simulated three-phase imbalance treatment system sequentially sends a reading data block command to the LoRa communication modules in the portable LoRa communication module networking test device;

the LoRa communication module acquires data from an analog meter of a computer through an Ethernet cable after receiving a data block reading command and returns the data to the power distribution terminal CCO;

and reading data through the main station connecting terminal, and detecting the online state and data information of each LoRa communication module.

Further, the testing method further comprises the following signal quality detection steps:

the power distribution terminal CCO sends out a special noise detection frame;

and the LoRa module transmits back noise information without an analog meter.

In conclusion, the invention provides a portable networking testing device and a testing method for LoRa communication modules, which solve the problems of time consumption, labor consumption and low testing efficiency in the field investigation and testing process, further simulate the communication working principle of a three-phase imbalance management system, can accurately evaluate the networking communication quality of a field controller and a phase change switch, accurately determine the installation point of the phase change switch, and improve the system operation effect.

Drawings

Fig. 1 is a schematic structural diagram of a portable LoRa communication module networking test device of the present invention;

fig. 2 is a schematic diagram of a main board module of the portable networking testing device for an LoRa communication module according to the present invention;

fig. 3 is a flowchart of the networking test method for the portable LoRa communication module according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. According to an embodiment of the present invention, a portable LoRa communication module networking test device is provided, where a schematic structural diagram of the test device is shown in fig. 1, and a schematic overall structural diagram is shown in fig. 2. Including portable box, power module, mainboard support and mainboard module. The main board module, the main board support and the power supply module are fixedly arranged inside the portable box body. The mainboard module and the power supply module are fixed on the mainboard bracket; the mainboard module comprises a LoRa module socket, an Ethernet communication interface, a power circuit and a CPU circuit. And the power supply module is arranged below the mainboard module, comprises a switching power supply, converts the accessed alternating current into direct current, and provides a working power supply for the mainboard module. As shown in fig. 1, the portable box 1, in this embodiment, is set to have a length of 40cm, a width of 35cm and a height of 14cm, the portable box 1 includes a bottom case, a storage bag 5 and a coded lock, and the storage bag 5 can be used for placing various connecting wires used on site. The mainboard support is fixed in the portable box 1, the mainboard module 2 is installed on the mainboard support, and the power switch 4 is installed below the mainboard module 2 and fixed on the mainboard support. loRa module socket, including loRa communication module interface, it is further, can include a plurality of loRa communication module interfaces to measure a plurality of loRa communication module's network deployment simultaneously. In this embodiment, 8 LoRa communication modules are arranged, and are inserted into the interface 3, the socket 3 supports hot plug, and the ethernet cable connected to the computer is connected to the network port 7, and the ethernet communication interface can be connected to the computer, so that the LoRa communication module can obtain data from the analog meter of the computer and feed back the data to the power distribution terminal CCO, thereby realizing the simulation of the field communication of the three-phase unbalanced device. The switching power supply can convert 220V alternating current into 12V direct current and 3.3V direct current.

As shown in fig. 2, the main board module 8 is fixed on the main board bracket by 4 tapping screws 10, the LoRa communication module can be inserted into the module interface 7, and the switching power supply 220V is connected to the power supply port 9, the power conversion circuit in the main board converts 220V ac power into 12V dc power and 3.3V dc power for the LoRa module and the main board CPU, and the ethernet communication interface 8 is connected to the network cable to connect the computer simulation table.

According to another embodiment of the present invention, there is provided a testing method of the portable LoRa communication module networking testing apparatus according to the first embodiment of the present invention, and a flowchart of the testing method is shown in fig. 3.

Before detection, a 220V alternating current power supply is connected to a switching power supply 4, after a mainboard is electrified, a network cable is inserted to be connected with a computer, analog meter software is configured at a computer end, a LoRa communication module to be networked and detected is inserted into an interface 3 position, after the module is electrified, the module waits for a power distribution terminal CCO to send a networking command, and a module indicator lamp flashes.

During detection, the power distribution terminal CCO can send out a networking command, the field modules can be sequentially on-line, the module lamps are slowly flashed, the waiting modules are all on-line, the power distribution terminal CCO can start to read the command in turn, the simulation unbalanced three-phase treatment system reads the commutation switch process, a 645 protocol is used, a data block reading command is sequentially sent to the LoRa module in the portable box, the LoRa module receives the reading frame, data are taken from a simulation table of a computer through an Ethernet wire, the data are returned to the power distribution terminal CCO, a meter reading process is completed, data are read through the main station connecting terminal, and the on-line state and data information of the detection module are detected. When the signal quality is detected, the power distribution terminal CCO sends out a special noise detection frame, and the module returns noise information without passing through an analog meter, so that the measurement of the field signal quality is completed.

In the detection process, according to the on-line time of the module and the information of the noise frame, the field communication quality condition can be obtained, and the communication mode of the three-phase imbalance management system is simulated, so that the communication environment of the phase change switch mounting point is accurately detected, and the management of three-phase imbalance is facilitated.

In conclusion, the invention relates to a portable networking testing device and a testing method for LoRa communication modules, solves the problems of time consumption, labor consumption and low testing efficiency in the field investigation and testing process, further simulates the communication working principle of a three-phase imbalance management system, can accurately evaluate the networking communication quality of a field controller and a phase change switch, accurately determines the installation point of the phase change switch, and improves the operation effect of the system.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (8)

1. A portable LoRa communication module networking test device is characterized by comprising a portable box body, a power supply module, a mainboard support and a mainboard module; wherein the content of the first and second substances,

the main board module, the main board bracket and the power supply module are fixedly arranged in the portable box body;

the mainboard module and the power supply module are fixed on the mainboard bracket;

the mainboard module comprises a LoRa module socket, an Ethernet communication interface, a power circuit and a CPU circuit;

the power module is arranged below the mainboard module, comprises a switch power supply, converts the accessed alternating current into direct current, and provides a working power supply for the mainboard module.

2. The testing device of claim 1, wherein the LoRa module socket comprises an LoRa communication module interface.

3. The testing device of claim 2, wherein the LoRa module socket comprises a plurality of LoRa communication module interfaces to measure networking of the plurality of LoRa communication modules simultaneously.

4. The testing device of claim 3, wherein the Ethernet communication interface is connected to a computer, so that the LoRa communication module can obtain data from a simulation table of the computer and feed the data back to the CCO to simulate the field communication of the three-phase unbalanced device.

5. The testing device of claim 4, wherein the switching power supply converts 220V AC to 12V and 3.3V DC.

6. The testing device of claim 5, wherein the portable case comprises a bottom case, a pouch, and a combination lock.

7. A testing method for the portable LoRa communication module networking testing device according to any one of claims 1 to 6, comprising the steps of:

the power distribution terminal CCO sends out a networking command, and each LoRa communication module is on line;

the power distribution terminal CCO sends out a round reading command, and the simulated three-phase imbalance treatment system sequentially sends a reading data block command to the LoRa communication modules in the portable LoRa communication module networking test device;

the LoRa communication module acquires data from an analog meter of a computer through an Ethernet cable after receiving a data block reading command and returns the data to the power distribution terminal CCO;

and reading data through the main station connecting terminal, and detecting the online state and data information of each LoRa communication module.

8. The test method of claim 7, further comprising a signal quality detection step of:

the power distribution terminal CCO sends out a special noise detection frame;

and the LoRa module transmits back noise information without an analog meter.

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