CN114422878A - Portable and rapid module signal quality acquisition method based on Wi-SUN communication technology - Google Patents
Portable and rapid module signal quality acquisition method based on Wi-SUN communication technology Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
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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
Technical Field
The invention belongs to the field of intelligent power grid communication, relates to a Wi-SUN communication module signal quality acquisition technology of a power system, and particularly relates to a method for portable and rapid acquisition of module signal quality based on the Wi-SUN communication technology.
Background
With the rapid development of the smart grid, the Wi-SUN module is widely deployed and used in the smart grid as an important way for wireless communication between the electric meter and the concentrator, and plays a role in connecting the electric power system concentrator and the smart meter.
At present, the performance of sending and receiving signals of the Wi-SUN module can seriously affect the success rate of communication between the concentrator and the electric meter. Under the normal networking environment of the Wi-SUN module, normal communication can be realized only after the MAC layer and the network layer of a slave NODE (NODE) module and a master NODE (ROOT) module are simultaneously networked, and the networking can be realized only after the networking takes 3-8 minutes, so that the batch production test of the Wi-SUN module is seriously influenced. The existing method for testing the signal quality of the module by the conventional networking has long operation time and complex process, and is difficult to meet the current market demand.
Disclosure of Invention
The invention aims to solve the problems, provides a method for quickly acquiring the signal quality of a portable module based on the Wi-SUN communication technology, and enables an electric power system ammeter or a concentrator to acquire Wi-SUN module signals more conveniently, flexibly, safely and reliably by reading the RSSI of the Wi-SUN module through a reading controller.
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:
s1, enabling the copy controller with the Wi-SUN module to be consistent with the initial state of the Wi-SUN module to be detected;
s2, setting 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 an MAC layer;
s4, 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 S5, after the Wi-SUN module to be tested receives the Reply packet, placing the signal quality RSSI in an Ack packet and sending the Ack packet to the copying controller.
Further, step S1 includes:
setting the interval distance between the copying controller and the Wi-SUN module to be tested within the range of 0-10 meters;
narrow band 922 and 925MHz are selected as communication frequency bands, 400KHz frequency band intervals are adopted, and 150Kbps communication speed is selected for sending and receiving broadcast data frames.
Further, step S2 includes:
setting the copy controller and the Wi-SUN module to be tested as Node nodes;
setting the copy controller and the Wi-SUN module to be tested as a factory mode;
and setting PANID of the copy controller and the Wi-SUN module to be tested to be 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 under the condition that a network layer is not networked.
Further, in step S3, the MAC layer networking is completed between the copy controller and the Wi-SUN module to be tested by broadcasting Ping to the Node nodes of the same PANID.
Further, a network consisting of the same PANID in the same network is formed by using an FF02, namely, an address Ping, and 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 broadcast address of the Wi-SUN module to be tested is the Ping packet of FF02::1, the Ping packet is sent periodically at an interval of 1S without waiting for the Ack packet sent by the copy controller.
Further, in step S4, after receiving the Ping packet with the address FF02::1, the copy controller replies a Reply packet to the Wi-SUN module to be tested within 1 ms.
Further, in step S5, the copy controller acquires the 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 uses the same PANID networking to ensure the safety and the correctness of the acquisition process. The method adopts the portable copying controller, and has the advantages of convenient carrying, high networking speed, high data acquisition efficiency, high data acquisition accuracy and the like.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
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The above and other objects, features and advantages of the present disclosure will become more apparent by describing in greater detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a flow chart of the inventive method for portable rapid acquisition of module signal quality.
Fig. 2 shows a schematic flow chart of detecting signal quality in narrowband broadcasting of a copy controller according to an embodiment of the present invention.
Fig. 3 shows a schematic diagram of obtaining RSSI by the copy controller according to the embodiment of the present invention.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the 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 to 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 solution of the embodiments of the present invention and the effects thereof, a specific application example is given below. It will be understood by those skilled in the art that this example is merely for the purpose of facilitating an understanding of the present invention and that any specific details thereof are not intended to limit the invention in any way.
As shown in fig. 1, the present embodiment discloses a method for portable and fast acquiring module signal quality based on Wi-SUN communication technology, which includes:
s1, enabling the copy controller with the Wi-SUN module to be consistent with the initial state of the Wi-SUN module to be detected;
s2, setting 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 an MAC layer;
s4, 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 S5, after the Wi-SUN module to be tested receives the Reply packet, placing the signal quality RSSI in an Ack packet and sending the Ack packet to the copying controller.
Furthermore, the portable meter reading controller is internally provided with a Wi-SUN module which can be directly powered by a USB/battery and can be used for different environment tests, and wireless intelligent public network module (Wi-SUN) modules to be tested can be plugged and placed on the intelligent electric meter, wherein both are Node nodes. The initial states of the copy controller and the Wi-SUN module to be tested need to be kept consistent before collection, namely, the frequency range, the frequency interval and the communication rate need to be kept consistent.
Particularly, the portable controller of copying and the Wi-SUN module that awaits measuring are all as the Node, and both interval distances are adjustable in 0 ~ 10 meters scope, and are unrestricted on the spatial distance. The standard communication frequency range in the Wi-SUN protocol is 902-. In the Wi-SUN protocol, the communication speed is 50Kbps, 100Kbps and 150Kbps within the frequency range of 902-928MHz, and the embodiment can select the communication speed of 150Kbps, so that the broadcast data frame can be sent and received at the highest speed, and the air propagation time of the data frame is greatly shortened. In the Wi-SUN protocol, 200KHz and 400KHz frequency band intervals are arranged in the frequency band range of 902-928Mhz, and the frequency hopping times can be shortened by adopting the 400KHz frequency band intervals in the non-time-slot Beacon-free mode in the fixed frequency band range, thereby being beneficial to the rapid networking of an MAC layer.
Preferably, the portable controller and the Wi-SUN module to be tested are Node nodes, the Node nodes cannot set a personal area network identifier PANID in a normal mode, and the PANID of the Node nodes can be synchronized after the Node nodes are networked. At the moment, the portable copy controller and the Wi-SUN module to be tested need to enter a factory mode to set the same PANID, and the portable copy controller and the Wi-SUN module to be tested can communicate with each other without networking in a network layer.
Specifically, the controller and the Wi-SUN module to be tested are configured into Node nodes, and the controller and the Wi-SUN module to be tested are configured into a factory mode. And setting PANID of the copy controller and the Wi-SUN module to be tested to be the same value in the range of (1-65534). Therefore, the copy controller and the Wi-SUN module to be tested can also communicate with each other under the condition that a network layer is not networked.
The Signal quality of the Wi-SUN module is mainly represented by the Signal Strength indicator (Received Signal Strength Indication) RSSI, and both the RSSI transmitted and Received by the module affect the performance of the module. The RSSI of the transmitted and received signals can be obtained by a Medium Access Control (MAC) layer two of the FAN Network.
The Wi-SUN module needs two steps of an MAC layer and a network layer for normal networking: 1. the MAC layer is added into the FAN network through a broadcast frame (PA), an identity authentication and a configuration frame (PC); 2. the network layer selects a proper father node through DIS, DIO, DAO and other messages, and then joins the topology. However, the method for portable and rapid acquisition of module signal quality based on Wi-SUN communication technology does not need network layer networking, and MAC layers can communicate with each other. Different Node nodes broadcast Ping through Node nodes of the same PANID. In the embodiment, the FF02 is that the address 1 can be used for a network consisting of the same PANID in the same Ping network, the Wi-SUN modules of the same PANID can form a FAN-like network without network layer networking, and the RSSI received by the Wi-SUN modules is obtained when the broadcast messages are received.
And the portable copy controller and the Wi-SUN module to be tested are powered on to enter a factory mode and then pass through the MAC layer networking. The Wi-SUN module to be tested sends a broadcast Packet Internet Groper (Ping) Packet, the copy controller receives the Ping Packet and then sends a Reply Packet (Reply Packet) to the Wi-SUN module to be tested, the Wi-SUN module to be tested receives the Reply Packet and then replies to the copy controller to confirm the Packet (Ack Packet), and the copy controller receives the received Ack Packet and then finishes communication. And when the Wi-SUN module to be tested receives the Reply packet, obtaining the received signal quality RSSI. And then, the received RSSI is put in an Ack packet and sent to the copying controller, and the copying controller can know the sending and receiving RSSI of the Wi-SUN module to be detected when receiving the Ack packet of the Wi-SUN module to be detected. And 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 in the same PANID in the factory mode, the MAC layer of the Wi-SUN module to be tested and the MAC layer of the copy controller form a FAN-like network, and the Wi-SUN module to be tested sends a broadcast packet (FF02:: 1). And when the replied Ack packet is not received after the Ping packet is broadcasted, the Wi-SUN module to be tested does not need to wait for the Ack packet of the copy controller, and the Ping packet is sent at an interval of 1 s. Sending Ping at periodic intervals of 1s can ensure the accuracy and safety of data reading and avoid data loss caused by network conflict.
When the copy controller receives a Ping packet with the address of FF02::1 broadcast, a Reply packet is replied to the Wi-SUN module to be tested within 1 ms. When the Wi-SUN module to be tested receives the Reply packet, the received signal quality RSSI is obtained, the received signal quality RSSI is carried with the Wi-SUN module to be tested when the Reply packet is replied to the copying controller Ack packet, and when the copying controller receives the Ack packet (with the received RSSI of the Wi-SUN module), the receiving RSSI (namely the sending RSSI of the Wi-SUN module) of the copying controller is known, so that the sending and receiving RSSI of the Wi-SUN module to be tested can be known on the copying controller. The whole process from the beginning of the Ping packet to the Ack packet takes less than 100ms, and the RSSI acquisition time is shortened.
The embodiment provides a method for portable and rapid acquisition of module signal quality based on a Wi-SUN communication technology, which enables a power system concentrator or an electric meter to acquire a Wi-SUN module more conveniently, flexibly, safely and reliably, and mainly comprises a copying controller and the Wi-SUN module, as shown in FIG. 2.
The Wi-SUN module to be tested is arranged in the intelligent electric meter, the portable reading controller is internally provided with the Wi-SUN module which can be directly powered by a USB/battery, and the RSSI value of the Wi-SUN module can be read in a movable manner. Setting communication parameters of a Wi-SUN module and a copy controller before acquisition: node nodes, a communication rate of 150Kbps, a frequency range of 922MHz to 925MHz and a frequency band interval of 400KHz are set. The Node cannot set a personal area network identifier PANID in a normal mode, and the PANID of the ROOT Node is synchronized after the Node is networked. At the moment, the portable copy controller and the Wi-SUN module to be tested need to enter a factory mode to set the same PANID, and the portable copy controller and the Wi-SUN module to be tested can communicate with each other without networking in a network layer. PANID is mainly used for identifying ID of Ping broadcast packet when module is in factory mode, only Wi-SUN module with PANID same can receive Ping broadcast packet. The portable copy controller and the Wi-SUN module to be tested form a FAN-like network, and the RSSI of the transmitted and received signals can be obtained at a Medium Access Control (MAC) layer two of the FAN network.
As shown in fig. 3, the process of acquiring RSSI by the copy controller is as follows: the Wi-SUN module to be tested sends a broadcast Packet Internet Groper (Ping) Packet, the copy controller receives the Ping Packet and then sends a Reply Packet (Reply Packet) to the Wi-SUN module to be tested, the Wi-SUN module to be tested receives the Reply Packet and then replies to the copy controller to confirm the Packet (Ack Packet), and the copy controller receives the received Ack Packet and then finishes communication. When the Wi-SUN module to be tested receives the Reply packet, the received signal quality RSSI is obtained, then the received RSSI is placed in the Ack packet and sent to the copying controller, and when the copying controller receives the Ack packet of the Wi-SUN module to be tested, the transmitting 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 method for portable and rapid acquisition of module signal quality based on the Wi-SUN communication technology aims to solve the problems of long networking time, inconvenient acquisition process, low acquisition module signal quality efficiency and the like of the existing Wi-SUN. The invention uses the same PANID fast networking based on the Wi-SUN technology through narrow-band high-speed communication, and uses FF02::1 address Ping packet to obtain the signal quality of the Wi-SUN module. 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.
It will be appreciated by persons skilled in the art that the above description of embodiments of the invention is intended only to illustrate the benefits of embodiments of the invention and is not intended to limit embodiments of the invention to any examples given.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many 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 method for portable and rapid acquisition of module signal quality based on Wi-SUN communication technology is characterized by comprising the following steps:
s1, enabling the copy controller with the Wi-SUN module to be consistent with the initial state of the Wi-SUN module to be detected;
s2, setting 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 an MAC layer;
s4, 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 S5, after the Wi-SUN module to be tested receives the Reply packet, placing the signal quality RSSI in an Ack packet and sending the Ack packet to the copying controller.
2. The method for portable rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 1, wherein step S1 includes:
setting the interval distance between the copying controller and the Wi-SUN module to be tested within the range of 0-10 meters;
narrow band 922 and 925MHz are selected as communication frequency bands, 400KHz frequency band intervals are adopted, and 150Kbps communication speed is selected for sending and receiving broadcast data frames.
3. The method for portable rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 1, wherein step S2 includes:
setting the copy controller and the Wi-SUN module to be tested as Node nodes;
setting the copy controller and the Wi-SUN module to be tested as a factory mode;
and setting PANID of the copy controller and the Wi-SUN module to be tested to be the same value in the range of 1-65534.
4. The method for portable rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 3, wherein the controller and the Wi-SUN module to be tested can communicate with each other without networking in the network layer.
5. The method for portable and fast acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 1, wherein in step S3, MAC layer networking is completed between the copy controller and the Wi-SUN module to be tested by broadcasting Ping Node nodes that communicate with the same PANID.
6. The method for portable rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 5, wherein the network composed of the same PANID in the same network is composed by using FF02::1 address Ping, and the copy controller and the MAC layer of the Wi-SUN module to be tested constitute a FAN-like network.
7. The method for portable and fast acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 1, wherein in step S4, after the Wi-SUN module to be tested broadcasts the Ping packet whose address is FF02::1, the Ping packet is sent periodically at an interval of 1S without waiting for the Ack packet sent by the copy controller.
8. The method for portable rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 7, wherein in step S4, the copy controller replies a Reply packet to the Wi-SUN module to be tested within 1ms after receiving the Ping packet with the address FF02:: 1.
9. The method for portable and rapid acquisition of module signal quality based on Wi-SUN communication technology as claimed in claim 7, wherein in step S5, the controller obtains the RSSI of the Wi-SUN module to be tested from the Ack packet.
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