A 433MHz wireless communication performance testing device and method

Abstract

This invention discloses a 433MHz wireless communication performance testing device and method, relating to the field of communication testing. The device includes a main body, a current channel, and a current generating unit. The main body includes a first region and a second region. The first region is used to place a master device; the second region is used to place a slave device. The master device and the slave device communicate wirelessly at 433MHz. The current generating unit is disposed on one side of the main body and is used to generate a first current signal. The current channel is disposed in the second region and is connected in a closed loop with the current generating unit. In communication performance testing, the slave device is placed on the current channel. This invention saves manpower and time costs associated with site setup in actual IoT environments when testing signal transmission between the master and slave devices in different regions, thus improving testing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of communication testing, and in particular to a 433MHz wireless communication performance testing device and method. Background Art

[0002] At present, there is an inseparable connection between power consumption management and line loss management on the low-voltage power consumption side and the correct station-user relationship. The existing line-transformer relationship identification technology solutions mainly include the following:

[0003] The first solution is to analyze the correlation between power outage data, and to fully explore the value of power outage data and apply it by adopting artificial intelligence data analysis methods. This solution is also called power outage pattern recognition technology; the second solution mainly calculates the similarity of the voltage curves in the substation area to realize the line-transformer relationship of the distribution network operation data and identify and verify it; the third solution is to combine the first two solutions to perform multi-dimensional line-transformer-station-user relationship and identify and verify it. The characteristic of this type of solution is that in order to be able to quickly and clearly identify the line-transformer relationship of the distribution network topology, it needs to be achieved through the synchronous measurement method of the current of the fire point under the switch and the user transformer.

[0004] In the technical route of online transformer and household relationship, the key to selecting synchronous current measurement method is to measure the current transformer of three-phase circuit. Considering electrical safety, it is necessary to design a wireless open-type digital current transformer. However, in the production process of digital wireless current transformer, the research on communication performance is also a crucial issue. Existing communication performance research mainly focuses on modeling and simulation research. Although simulation test is more convenient, there is still a big difference with real environment test, which cannot reflect the actual effect of wireless communication signal in the process of penetrating wall. Some studies are combined with hardware configurable parameter characteristics to conduct numerical communication performance predictive analysis research. However, the above schemes are highly dependent on characteristic data and performance parameters when testing communication performance, and require a large amount of data in real environment for analysis and research. In addition, most of the schemes for testing wireless communication in real environment are also subject to great restrictions in terms of labor time consumption and site construction deployment. Summary of the invention

[0005] The purpose of the present invention is to provide a 433 MHz wireless communication performance testing device and method, which saves the manpower cost and time cost of site layout in an actual Internet of Things environment and improves the testing efficiency.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A 433MHz wireless communication performance test device, comprising at least: a main body, a current channel and a current generating unit;

[0008] The main body includes: a first area and a second area; the first area is used to place the host; the second area is used to place the slave; wherein the host and the slave use 433MHz wireless communication;

[0009] The current generating unit is arranged on one side of the main body, and the current generating unit is used to generate a first current signal; the current channel is arranged on the second area, and the current channel is connected to the current generating unit in a closed loop;

[0010] In the communication performance test, the slave is placed on the current channel.

[0011] Optionally, the first area is a cavity structure with an opening on one side, the second area is a pull-out structure, and the first area is located on the second area;

[0012] One end of the closed door of the pull-out structure is fixed to one end of the second area by a bracket; and a handle is arranged on the closed door.

[0013] Optionally, it also includes: a cloud platform;

[0014] The slave is used to collect the first current signal in a communication performance test, and modulate the first current signal into a radio frequency signal and then send it out;

[0015] The host is used to receive the radio frequency signal, and demodulate the radio frequency signal into a second current signal and then send it out;

[0016] The cloud platform is used to receive the second current signal.

[0017] Optionally, the current channel includes a horizontal beam and a vertical beam;

[0018] One end of the vertical beam is fixed to the top plate of the second area by screws, and the other end of the vertical beam is fixed to one end of the horizontal beam by screws; the other end of the horizontal beam is fixed to the rear plate of the second area.

[0019] Optionally, before the communication performance test, the screws between the crossbeam and the vertical beam are unscrewed, and the slave device is passed through the crossbeam to fix the slave device on the crossbeam.

[0020] Optionally, there are multiple slaves, and the slaves at least include: a wireless current transformer and a first 433M communication module;

[0021] The wireless current transformer is used to collect the first current signal and transmit it to the first 433M communication module through the USART serial port;

[0022] The first 433M communication module is used to modulate the first current signal into the radio frequency signal and send it out.

[0023] Optionally, there is one host, and the host at least includes a second 433M communication module and a 4G module;

[0024] The 433M communication module is used to receive the radio frequency signal; and demodulate the radio frequency signal into the second current signal;

[0025] The 4G module is used to send the second current signal to the cloud platform.

[0026] Optionally, it further includes: one or more steel plates, wherein the steel plates are arranged between the first area and the second area.

[0027] Optionally, it further includes: a motor; the motor is used to place the steel plate between the first area and the second area.

[0028] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0029] The present invention provides a 433MHz wireless communication performance test device, comprising: a main body, a current channel and a current generating unit; the main body comprises: a first area and a second area; the first area is used to place a host; the second area is used to place a slave; wherein 433 wireless communication is adopted between the host and the slave; the current generating unit is arranged on one side of the main body, and the current generating unit is used to generate a current signal; the current channel is arranged on the second area, and the current channel is connected to the current generating unit in a closed loop; in the communication performance test, the slave is placed on the current channel. In the prior art, it is necessary to manually build a test device and deploy a construction site, which is very time-consuming. The present invention builds this device when testing the signal transmission between the host and the slave in different areas, which saves the manpower and time cost of site layout in an actual Internet of Things environment and improves the test efficiency.

[0030] The present invention also provides a testing method for a 433MHz wireless communication performance testing device, the testing method comprising:

[0031] Acquire a first current signal collected by the slave in a time-division round-robin manner;

[0032] Acquire a second current signal sent by the host, where the second current signal is a signal formed by the host demodulating the radio frequency signal sent by the slave; the radio frequency signal is a signal formed by the slave modulating the first current signal;

[0033] When the first current signal and the second current signal are the same, determining that the slave is a normal machine;

[0034] When the first current signal and the second current signal are different, and the number of times that the second current signal appears 0 at the same position in different cycles reaches a first threshold, determining that the slave is a damaged machine;

[0035] When the first current signal and the second current signal are different, and when the number of times that 0 appears at the same position of the second current signal in different cycles does not reach a first threshold, it is determined that the slave is a normal machine.

[0036] Since the technical effect achieved by the testing method of a 433 MHz wireless communication performance testing device provided by the present invention is the same as the technical effect achieved by the 433 MHz wireless communication performance testing device provided above, it will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 A structural diagram of a 433MHz wireless communication performance test device of the present invention;

[0039] Figure 2 FIG2 is a schematic diagram of the structure of a 433MHz wireless communication performance test device of the present invention;

[0040] Figure 3 A model diagram of a slave machine of the present invention;

[0041] Figure 4 A model diagram of the host of the present invention;

[0042] Figure 5 This is a schematic diagram of the state before the test of the 433MHz wireless communication performance test device of the present invention;

[0043] Figure 6 This is a schematic diagram of the working state of the 433MHz wireless communication performance test device of the present invention;

[0044] Figure 7 It is an information interaction diagram of the 433MHz wireless communication performance test device when the present invention is working;

[0045] Figure 8 The present invention is a flowchart of a 433MHz wireless communication performance testing method.

[0046] Explanation of symbols in the figure:

[0047] 1. Main body, 2. Current generating unit, 3. Current channel, 4. First area, 5. Second area, 6. Steel plate. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The purpose of the present invention is to provide a 433 MHz wireless communication performance testing device and method, which saves the manpower cost and time cost of site layout in an actual Internet of Things environment and improves the testing efficiency.

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] Embodiment 1

[0052] Figure 1 This is a schematic diagram of the structure of a 433MHz wireless communication performance test device of the present invention. Figure 2 FIG2 is a schematic diagram of the structure of a 433MHz wireless communication performance test device of the present invention.

[0053] like Figure 1-2 As shown, a 433 MHz wireless communication performance test device provided in Embodiment 1 of the present invention at least includes: a main body 1 , a current channel 3 and a current generating unit 2 .

[0054] The main body includes: a first area 4 and a second area 5; the first area 4 is used to place the host; the second area 5 is used to place the slave; wherein the host and the slave use 433MHz wireless communication. Figure 4 As shown, the structure of the slave is as follows Figure 3 shown.

[0055] The current generating unit 2 is disposed on one side of the main body 1 , and is used to generate a first current signal; the current channel 3 is disposed on the second area 5 , and the current channel 3 is connected to the current generating unit 2 in a closed loop.

[0056] In the communication performance test, the slave is placed on the current channel 3.

[0057] The main body is a double-layer structure, and the first area 4 is located on the second area 5. The double-layer structure is 750 mm long, 460 mm wide, and 500 mm high.

[0058] An example is: the first area 4 is an upper structure, specifically a cavity structure with an opening on one side, and the second area 5 is a lower structure, specifically a pull-out structure.

[0059] One end of the closed door of the pull-out structure is fixed to one end of the second area 5 by a bracket.

[0060] The closed door is provided with a handle fixed by screws. The handle can be spherical.

[0061] Furthermore, the device described in the embodiment of the present invention also includes: a cloud platform.

[0062] The slave is used to collect a first current signal in a communication performance test, and modulate the first current signal into a radio frequency signal before sending it out. The host is used to receive the radio frequency signal, and demodulate the radio frequency signal into a second current signal before sending it out. The cloud platform is used to receive the second current signal.

[0063] Furthermore, the current channel 3 described in the embodiment of the present invention includes a horizontal beam and a vertical beam.

[0064] One end of the vertical beam is fixed to the top plate of the second area 5 by screws, and the other end of the vertical beam is fixed to one end of the horizontal beam by screws; the other end of the horizontal beam is fixed to the rear plate of the second area 5.

[0065] The top plate of the second area 5 is made of steel bars, cement and fine sand.

[0066] Specifically, before the communication performance test, the screws fixing the cross beam and the vertical beam are unscrewed, and the slave device is passed through the cross beam to fix the slave device on the cross beam.

[0067] Furthermore, the slaves described in the first embodiment of the present invention are multiple, and the slaves at least include: a wireless current transformer and a first 433M communication module.

[0068] The wireless current transformer is used to collect the first current signal and transmit it to the first 433M communication module through the USART serial port.

[0069] The first 433M communication module is used to modulate the first current signal into the radio frequency signal and send it out.

[0070] The slave device may further include a battery power supply, and the battery power supply may provide electrical energy for the slave device.

[0071] Furthermore, the host described in Embodiment 1 of the present invention is one, and the host at least includes a second 433M communication module and a 4G module.

[0072] The 433M communication module is used to receive the radio frequency signal; and demodulate the radio frequency signal into the second current signal; the 4G module is used to send the second current signal to the cloud platform.

[0073] Wherein, the host may further include a power module and a single chip microcomputer controller.

[0074] Furthermore, the current generating unit 2 described in the embodiment of the present invention includes: a high-precision millisecond meter, a true effective value ammeter, a current sensor, a voltage regulator, a microcomputer controller and a display screen. The output voltage of the voltage regulator is adjusted to obtain the current required for the experiment. The current sensor is placed on the output line through a snap-on installation. The current sensor transmits the measured current value to the true effective value ammeter, which is finally processed by the microcontroller and displayed on the display screen. The high-precision millisecond meter provides time calibration and timing functions for the processor. The current generating unit 2 is mounted on one side of the main body 1 in a track-type wall-mounted manner.

[0075] Furthermore, the device described in the first embodiment of the present invention further comprises: one or more steel plates 6, such as Figure 5 As shown, the steel plate 6 is arranged between the first area 4 and the second area 5 .

[0076] The steel plates 6 are filled in a pull-out manner. By increasing the number of steel plates 6, the ability to block signals is enhanced, and the relationship between communication signal strength and wall thickness is further tested. If the host can still stably receive data sent by the slave, then it can be determined that the 433MHz wireless communication performance is in a reliable state. Otherwise, it will be determined that there is a problem with the communication quality of the product, and it will be singled out for software and hardware rectification and debugging.

[0077] Furthermore, the device described in Embodiment 1 of the present invention further includes: a motor; the motor is used to place the steel plate 6 between the first area 4 and the second area 5 .

[0078] Before testing the communication performance of the 433MHz wireless communication module, Figure 5 As shown, first place the host and slave in the corresponding position. Then start the communication between the host and the slave, and between the host and the cloud platform, so as to test the communication performance of the 433MHz wireless communication module. Its working status is as follows: Figure 6 shown.

[0079] like Figure 7As shown, 433 wireless communication is adopted between the host and the slave, and 4G communication is adopted between the host and the cloud platform.

[0080] Embodiment 2

[0081] Figure 8 A flow chart of a test method for a 433 MHz wireless communication performance test device according to Embodiment 1 provided in Embodiment 2 of the present invention. Figure 8 As shown, the test method includes:

[0082] Step 100: Acquire a first current signal collected by the slave in a time-division round-robin manner.

[0083] Step 200: Acquire a second current signal, where the second current signal is a signal formed after the host demodulates the radio frequency signal sent by the slave; the radio frequency signal is a signal formed after the slave modulates the current signal.

[0084] Step 300: When the first current signal and the second current signal are the same, the slave is a normal machine.

[0085] Step 400: When the first current signal and the second current signal are different, and the number of times that 0 appears at the same position of the second current signal in different cycles reaches a first threshold, it is determined that the slave is a damaged machine.

[0086] Step 500: When the first current signal and the second current signal are different, and when the number of times that 0 appears at the same position of the second current signal in different cycles does not reach a first threshold, determine that the slave is a normal machine.

[0087] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0088] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A 433MHz wireless communication performance test device, characterized in that: At least comprising: one or more steel plates, a main body, a current channel and a current generating unit; The main body includes: a first area and a second area; the first area is used to place the host; the second area is used to place the slave; wherein the host and the slave use 433MHz wireless communication; The current generating unit is arranged on one side of the main body, and the current generating unit is used to generate a first current signal; the current channel is arranged on the second area, and the current channel is connected to the current generating unit in a closed loop; In the communication performance test, the slave is placed on the current channel; The first area is a cavity structure with an opening on one side, the second area is a pull-out structure, and the first area is located on the second area; One end of the pull-out closed door is fixed to one end of the second area by a bracket; a handle is provided on the closed door; The current channel includes a horizontal beam and a vertical beam; One end of the vertical beam is fixed to the top plate of the second area by screws, and the other end of the vertical beam is fixed to one end of the horizontal beam by screws; the other end of the horizontal beam is fixed to the rear plate of the second area; The steel plate is disposed between the first region and the second region.

2. A 433MHz wireless communication performance test device according to claim 1, characterized in that: Also includes: Cloud platform; The slave is used to collect the first current signal in a communication performance test, and modulate the first current signal into a radio frequency signal and then send it out; The host is used to receive the radio frequency signal, and demodulate the radio frequency signal into a second current signal and then send it out; The cloud platform is used to receive the second current signal.

3. A 433MHz wireless communication performance test device according to claim 1, characterized in that: Before the communication performance test, the screws between the crossbeam and the vertical beam are unscrewed, and the slave device is passed through the crossbeam to fix the slave device on the crossbeam.

4. A 433MHz wireless communication performance test device according to claim 2, characterized in that: There are multiple slaves, and each slave includes at least: a wireless current transformer and a first 433M communication module; The wireless current transformer is used to collect the first current signal and transmit it to the first 433M communication module through the USART serial port; The first 433M communication module is used to modulate the first current signal into the radio frequency signal and send it out.

5. A 433MHz wireless communication performance test device according to claim 2, characterized in that: There is one host, and the host at least includes a second 433M communication module and a 4G module; The 433M communication module is used to receive the radio frequency signal; and demodulate the radio frequency signal into the second current signal; The 4G module is used to send the second current signal to the cloud platform.

6. A 433MHz wireless communication performance test device according to claim 1, characterized in that: Also includes: Motor; The motor is used to place the steel plate between the first area and the second area.

7. A testing method based on a 433MHz wireless communication performance testing device according to claim 2, characterized in that: The test method includes: Acquire a first current signal collected by the slave in a time-division round-robin manner; Acquire a second current signal sent by the host, where the second current signal is a signal formed by the host demodulating the radio frequency signal sent by the slave; the radio frequency signal is a signal formed by the slave modulating the first current signal; When the first current signal and the second current signal are the same, determining that the slave is a normal machine; When the first current signal and the second current signal are different, and the number of times that the second current signal appears 0 at the same position in different cycles reaches a first threshold, determining that the slave is a damaged machine; When the first current signal and the second current signal are different, and when the number of times that 0 appears at the same position of the second current signal in different cycles does not reach a first threshold, it is determined that the slave is a normal machine.

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