CN114422878A - Method of Portable and Fast Acquisition of Module Signal Quality Based on Wi-SUN Communication Technology - Google Patents

Abstract

The invention provides a method for portable and rapid acquisition of module signal quality based on Wi-SUN communication technology, which comprises the following steps: enabling the copying controller with the Wi-SUN module to be consistent with the initial state of the Wi-SUN module to be detected; setting the copy controller and the Wi-SUN module to be tested to have the same PANID; the copy controller and the Wi-SUN module to be tested are networked through an MAC layer; the Wi-SUN module to be tested sends a broadcast Ping packet, the copy controller sends a Reply packet to the Wi-SUN module to be tested after receiving the Ping packet, and the Wi-SUN module to be tested obtains the received signal quality RSSI when receiving the Reply packet; and after receiving the Reply packet, the Wi-SUN module to be tested puts the RSSI (received signal strength indicator) of the signal quality in an Ack packet and sends the ACK packet to the copy controller. The invention is based on Wi-SUN communication technology, ensures the safety of the data acquisition process, and has the advantages of convenient carrying, high networking speed, high data acquisition efficiency, high data acquisition accuracy and the like.

Description

Method of Portable and Fast Acquisition of Module Signal Quality Based on Wi-SUN Communication Technology

technical field

The invention belongs to the field of smart grid communication, relates to a signal quality acquisition technology of a Wi-SUN communication module of a power system, and in particular relates to a method for portable and fast acquisition of module signal quality based on the Wi-SUN communication technology.

Background technique

With the vigorous development of smart grids, Wi-SUN modules have been widely deployed in smart grids as an important way of wireless communication between electricity meters and concentrators. It plays the role of connecting power system concentrators and smart meters.

At present, the performance of the Wi-SUN module to send and receive signals will seriously affect the success rate of communication between the concentrator and the meter. In the normal networking environment of the Wi-SUN module, the MAC layer and network layer of the slave node (NODE) and the master node (ROOT) module need to be connected to the Internet at the same time before they can communicate normally. The networking takes about 3 to 8 minutes to connect to the Internet. , which seriously affects the mass production test of the Wi-SUN module. At present, the conventional method for testing the signal quality of a module in a network has a long operation time and a complicated process, which is difficult to meet the current market demand.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above-mentioned problems, and propose a portable and fast acquisition module signal quality method based on the Wi-SUN communication technology. The acquisition of module signals is more convenient, flexible, safe and reliable.

The present invention provides a method for portable and fast acquisition of module signal quality based on Wi-SUN communication technology, comprising:

S1. Make the initial state of the copy controller with the Wi-SUN module and the Wi-SUN module to be tested consistent;

S2, set the copy controller and the Wi-SUN module to be tested to have the same PANID;

S3, the copy controller and the Wi-SUN module to be tested are networked through the MAC layer;

S4. The Wi-SUN module to be tested sends a broadcast Ping packet, and the copy controller sends a Reply packet to the Wi-SUN module to be tested after receiving the Ping packet. When the Wi-SUN module to be tested receives the Reply packet, it obtains its received signal quality RSSI;

S5. After receiving the Reply packet, the Wi-SUN module to be tested puts the signal quality RSSI in the Ack packet and sends it to the copy controller.

Further, step S1 includes:

Set the distance between the copy controller and the Wi-SUN module to be tested within a range of 0 to 10 meters;

The narrowband 922-925MHz is selected as the communication frequency band, the frequency band interval of 400KHz is adopted, and the communication rate of 150Kbps is selected to send and receive broadcast data frames.

Further, step S2 includes:

Set the copy controller and the Wi-SUN module to be tested as Node nodes;

Set the copy controller and the Wi-SUN module to be tested to factory mode;

Set the PANID of the copy controller and the Wi-SUN module to be tested to the same value in the range of 1-65534.

Further, the copy controller and the Wi-SUN module to be tested can communicate with each other when the network layer is not networked.

Further, in step S3, between the copy controller and the Wi-SUN module to be tested, the MAC layer networking is completed by broadcasting and pinging the Node nodes with the same PANID.

Further, using the FF02::1 address to ping a network composed of the same PANID in the same network, the copy controller and the MAC layer of the Wi-SUN module to be tested form a FAN-like network.

Further, in step S4, after the Wi-SUN module to be tested broadcasts the Ping packet whose address is FF02::1, it does not need to wait for the Ack packet sent by the copy controller, and periodically sends the Ping packet at 1s intervals.

Further, in step S4, after receiving the Ping packet with the address of FF02::1, the copy controller returns a Reply packet to the Wi-SUN module to be tested within 1 ms.

Further, in step S5, the copy controller obtains the signal quality RSSI of the Wi-SUN module to be tested from the Ack packet.

The method for rapidly detecting the signal quality of the Wi-SUN module of the present invention uses the same PANID to form a network to ensure the safety and correctness of the acquisition process. The method adopts a portable copy controller, and has the advantages of convenient portability, fast networking speed, high data collection efficiency, and high data acquisition accuracy.

Other features and advantages of the present invention will be described in detail in the detailed description that follows.

Description of drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the more detailed description of the exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings, wherein the same reference numerals generally refer to the exemplary embodiments of the present disclosure. same parts.

Fig. 1 shows the flow chart of the inventive method for the portable and fast acquisition of the signal quality of the module.

Fig. 2 shows a schematic diagram of the flow chart of the narrowband broadcast detection signal quality of the copy controller according to the embodiment of the present invention.

FIG. 3 shows a schematic diagram of RSSI obtained by a copy controller according to an embodiment of the present invention.

Detailed ways

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

To facilitate understanding of the solutions and effects of the embodiments of the present invention, a specific application example is given below. It will be understood by those skilled in the art that this example is provided only to facilitate understanding of the invention and that any specific details thereof are not intended to limit the invention in any way.

As shown in FIG. 1 , this embodiment discloses a method for portable and fast acquisition of signal quality of a module based on Wi-SUN communication technology, including:

S1. Make the initial state of the copy controller with the Wi-SUN module and the Wi-SUN module to be tested consistent;

S2, set the copy controller and the Wi-SUN module to be tested to have the same PANID;

S3, the copy controller and the Wi-SUN module to be tested are networked through the MAC layer;

S4. The Wi-SUN module to be tested sends a broadcast Ping packet, and the copy controller sends a Reply packet to the Wi-SUN module to be tested after receiving the Ping packet. When the Wi-SUN module to be tested receives the Reply packet, it obtains its received signal quality RSSI;

S5. After receiving the Reply packet, the Wi-SUN module to be tested puts the signal quality RSSI in the Ack packet and sends it to the copy controller.

Further, the Wi-SUN module inside the portable copy controller can be directly powered by USB/battery, which can be used for testing in different environments. The Wi-SUN (Wireless Smart Utility Network) module to be tested is pluggable and placed in the On smart meters, both are Node nodes. Before acquisition, the initial state of the copy controller and the Wi-SUN module to be tested must be the same, that is, the frequency range, frequency interval, and communication rate must be the same.

Specifically, the portable copy controller and the Wi-SUN module to be tested are both used as Node nodes, and the distance between the two can be adjusted within the range of 0 to 10 meters, and the spatial distance is not limited. The standard communication frequency band range in the Wi-SUN protocol is 902-928Mhz. In this embodiment, a narrowband 922-925MHz with better communication effect can be selected as the communication frequency band, which can effectively shorten the network scanning time during the networking process. In the Wi-SUN protocol, there are 50Kbps, 100Kbps, and 150Kbps communication rates in the 902-928MHz frequency band. In this embodiment, the 150Kbps communication rate can be selected, which can send and receive broadcast data frames at the fastest speed, greatly shortening the transmission time of data frames in the air. In the Wi-SUN protocol, the frequency band interval is 200KHz and 400KHz in the 902-928Mhz frequency band. In the fixed frequency band range, the 400KHz frequency band interval can be used in the non-slot and no Beacon mode to shorten the frequency hopping times, which is conducive to the rapid networking of the MAC layer.

Preferably, both the portable copy controller and the Wi-SUN module to be tested are Node nodes. The Node node cannot set the personal area network identifier PANID in normal mode, and the Node node will synchronize the PANID of the ROOT node after networking. At this time, both the portable copy controller and the Wi-SUN module to be tested need to enter the factory mode to set the same PANID, and the two can communicate with each other without networking at the network layer.

Specifically, the copy controller and the Wi-SUN module to be tested are configured as Node nodes, and the copy controller and the Wi-SUN module to be tested are configured as factory mode. Set the PANID of the copy controller and the Wi-SUN module to be tested to the same value within the range of (1-65534). Therefore, the copy controller and the Wi-SUN module to be tested can communicate with each other even when the network layer is not networked.

The signal quality of the Wi-SUN module is mainly reflected in the RSSI of the signal strength (Received Signal Strength Indication), and the RSSI sent and received by the module will affect the module performance. The copy controller and the Wi-SUN module form a Field Area Network (FAN)-like network in factory mode, and the transmitted and received signal strength RSSI can be obtained at the Layer 2 medium access control layer (MAC) of the FAN network.

The normal networking of the Wi-SUN module requires two steps: the MAC layer and the network layer: 1. The MAC layer joins the FAN network through the broadcast frame (PA), identity authentication, and configuration frame (PC); 2. The network layer uses DIS, DIO, Messages such as DAO select the appropriate parent node and then join the topology. However, the method of portable and fast acquisition of module signal quality based on Wi-SUN communication technology does not require network layer networking, and the MAC layer can communicate with each other. Different Nodes ping Nodes with the same PANID by broadcasting. In this embodiment, the FF02::1 address can be used to ping the network composed of the same PANID in the same network. The Wi-SUN modules of the same PANID can form a FAN-like network without networking at the network layer, and obtain their own network when receiving the broadcast message. Received RSSI.

The portable copy controller and the Wi-SUN module to be tested are powered on and enter the factory mode through the MAC layer networking. The Wi-SUN module to be tested sends a broadcast Packet internet Groper (Ping) packet. After receiving the Ping packet, the copy controller sends a reply packet (Reply packet) to the Wi-SUN module to be tested. The Wi-SUN module to be tested receives the packet. After the Reply packet is received, it will reply to the copy controller confirmation packet (Ack packet), and the copy controller will receive the Ack packet and the communication will end. When the Wi-SUN module to be tested receives the Reply packet, it obtains the RSSI of the received signal quality. Then put the received RSSI in the Ack packet and send it to the copy controller. When the copy controller receives the Ack packet of the Wi-SUN module to be tested, it can know the sent and received RSSI of the Wi-SUN module to be tested. The sending and receiving RSSI of the Wi-SUN module to be tested can be obtained on the copy controller.

Specifically, when the Wi-SUN module to be tested and the copy controller are both in the factory mode with the same PANID, the MAC layers of the two form a FAN-like network, and the Wi-SUN module to be tested sends a broadcast packet (FF02::1). When the Ack packet is not received after broadcasting the Ping packet, the Wi-SUN module to be tested does not need to wait for the Ack packet from the copy controller, and sends the Ping packet every 1s. Sending Pings at periodic intervals of 1s can ensure the accuracy and security of the read data and avoid data loss caused by network conflicts.

When the copy controller receives the broadcast Ping packet with the address of FF02::1, it will reply a Reply packet to the Wi-SUN module to be tested within 1ms. When the Wi-SUN module to be tested receives the Reply packet, it obtains the RSSI of the received signal quality, and returns the Ack packet to the copy controller with the received RSSI of the Wi-SUN module to be tested, and the copy controller receives the Ack packet (with the receiving RSSI of the Wi-SUN module), know the receiving RSSI of the copy controller (that is, the sending RSSI of the Wi-SUN module), so the copy controller can know the sending and receiving of the Wi-SUN module to be tested. RSSI. The entire process from the start of the Ping packet to the receipt of the Ack packet takes less than 100ms, which shortens the time for collecting RSSI.

This embodiment provides a method for portable and rapid acquisition of signal quality of a module based on the Wi-SUN communication technology, which makes the acquisition of the Wi-SUN module by a power system concentrator or an electric meter more convenient, flexible, safe and reliable. It consists of a controller and a Wi-SUN module, as shown in Figure 2.

The Wi-SUN module to be tested is placed in the smart meter. The Wi-SUN module inside the portable copy controller can be directly powered by USB/battery, and the RSSI value of the Wi-SUN module can be read mobile. Before acquisition, set the communication parameters of Wi-SUN module and copy controller: set as Node node, communication rate of 150Kbps, frequency range of 922MHz to 925MHz, and frequency band interval of 400KHz. The Node node cannot set the personal area network identifier PANID in the normal mode. After the Node node is networked, the PANID of the ROOT node will be synchronized. At this time, both the portable copy controller and the Wi-SUN module to be tested need to enter the factory mode to set the same PANID, and the two can communicate with each other without networking at the network layer. PANID is mainly used for the identification ID of the ping broadcast packet when the module is in factory mode. Only the Wi-SUN module with the same PANID can receive the broadcast ping packet. The portable copy controller and the Wi-SUN module to be tested form a FAN-like network, and the transmitted and received signal strength RSSI can be obtained at the Layer 2 medium access control layer (MAC) of the FAN network.

As shown in Figure 3, the process for the copy controller to obtain the RSSI is as follows: the Wi-SUN module to be tested sends a broadcast Packetinternet Groper (Ping) packet, and the copy controller sends a reply packet (Reply packet) to the under test after receiving the Ping packet. After receiving the Reply packet, the Wi-SUN module to be tested replies to the copy controller confirmation packet (Ack packet), and the copy controller will receive the Ack packet and end the communication. When the Wi-SUN module to be tested receives the Reply packet, it obtains the received signal quality RSSI, and then puts the received RSSI in the Ack packet and sends it to the copy controller. The copy controller receives the Wi-SUN module to be tested. When the Ack packet is received, the sending and receiving RSSI of the Wi-SUN module to be tested can be known. The sending and receiving RSSI of the Wi-SUN module can be obtained on the copy controller.

The purpose of the method for portable and rapid acquisition of module signal quality based on Wi-SUN communication technology in this embodiment is to overcome the problems of the existing Wi-SUN network, such as long networking time, inconvenient acquisition process, and low efficiency of acquisition module signal quality. Based on the Wi-SUN technology, the invention uses the same PANID to quickly form a network through narrow-band high-speed communication, and uses the FF02::1 address Ping packet to obtain the signal quality of the Wi-SUN module. Based on the Wi-SUN communication technology, the invention ensures the safety of the data collection process, and has the advantages of convenient portability, fast networking speed, high data collection efficiency, and high data acquisition accuracy.

It should be understood by those skilled in the art that the above description of the embodiments of the present invention is only intended to illustrate the beneficial effects of the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to any examples given.

Various embodiments of the present invention have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (9)

1. a kind of method based on Wi-SUN communication technology portable fast acquisition module signal quality, is characterized in that, comprises: S1. Make the initial state of the copy controller with the Wi-SUN module and the Wi-SUN module to be tested consistent; S2, set the copy controller and the Wi-SUN module to be tested to have the same PANID; S3, the copy controller and the Wi-SUN module to be tested are networked through the MAC layer; S4. The Wi-SUN module to be tested sends a broadcast Ping packet, and the copy controller sends a Reply packet to the Wi-SUN module to be tested after receiving the Ping packet. When the Wi-SUN module to be tested receives the Reply packet, it obtains its received signal quality RSSI; S5. After receiving the Reply packet, the Wi-SUN module to be tested puts the signal quality RSSI in the Ack packet and sends it to the copy controller. 2. the method for portable fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 1, is characterized in that, step S1 comprises: Set the distance between the copy controller and the Wi-SUN module to be tested within a range of 0 to 10 meters; The narrowband 922-925MHz is selected as the communication frequency band, the frequency band interval of 400KHz is adopted, and the communication rate of 150Kbps is selected to send and receive broadcast data frames. 3. the method for portable fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 1, is characterized in that, step S2 comprises: Set the copy controller and the Wi-SUN module to be tested as Node nodes; Set the copy controller and the Wi-SUN module to be tested to factory mode; Set the PANID of the copy controller and the Wi-SUN module to be tested to the same value in the range of 1-65534. 4. the method based on Wi-SUN communication technology portable fast acquisition module signal quality as claimed in claim 3, is characterized in that, described copy controller and Wi-SUN module to be tested can be in the situation that network layer is not networked communicate with each other. 5. the method for portable and fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 1, is characterized in that, in step S3, between described copy controller and Wi-SUN module to be measured, by Broadcast Ping through the Node nodes with the same PANID to complete the MAC layer networking. 6. the method for portable fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 5, is characterized in that, utilizes FF02::1 address to ping the network that identical PANID forms in the same network, described copy controller It forms a FAN-like network with the MAC layer of the Wi-SUN module to be tested. 7. the method for portable and fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 1, is characterized in that, in step S4, the Wi-SUN module broadcast address to be tested is after the Ping packet of FF02::1 , without waiting for the Ack packet sent by the copy controller, and send the Ping packet at a periodic interval of 1s. 8. the method for portable and fast acquisition module signal quality based on Wi-SUN communication technology as claimed in claim 7, is characterized in that, in step S4, after described copy controller receives the Ping packet that address is FF02::1, Reply a Reply packet to the Wi-SUN module to be tested within 1ms. 9. the method based on Wi-SUN communication technology portable fast acquisition module signal quality as claimed in claim 7, is characterized in that, in step S5, described copy controller obtains the Wi-SUN module to be measured from Ack bag. Signal quality RSSI.

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