CN100550077C - Two-dimensional relay type automatic route meter reading method and carrier route dynamic maintenance method - Google Patents

Abstract

The invention belongs to the field of electric power low-voltage carrier communication, and relates to a two-dimensional relay type automatic route meter reading method, wherein the route meter reading method establishes meter reading paths by layering electric meters to be read step by step, reads second-level electric meters under the items by selecting first-level electric meter information reading points, reads third-level electric meters under the items by the second-level electric meters, completes reading of the electric meters at the bottommost layer by analogy, and summarizes data of the read electric meters to obtain total data information of the electric meters to be read. The two-dimensional relay type meter reading automatic routing mode provided by the invention can enable the meter reading to be faster, enables the follow-up maintenance to be more trouble-saving through the automatic searching of the destination electric meter routing information, and has low realization difficulty and higher practical value.

Description

Two-Dimensional Relay Automatic Routing Meter Reading Method

technical field

The invention belongs to the field of electric low-voltage carrier communication, relates to a meter reading technology, in particular to a two-dimensional relay type automatic routing meter reading method.

Background technique

At present, the transformation of rural power grids has been widely promoted nationwide. With the maturity of remote control technology and the mature application of key customer management terminals, the idea of automatic meter reading in residential quarters has gradually been recognized by relevant institutions and is being fully piloted. Community meter reading is different from the management of large industrial customer meters, and the functional requirements and cost considerations are inconsistent. Therefore, using point-to-plane control to manage community meters has become a de facto standard. Channel selection also tends to adopt low-cost, maintenance-free power carrier mode. For the low-voltage power carrier wave meter reading system, the key to the success of the entire system is the successful transmission of carrier information between the acquisition device and the meter. Due to the large number of meters managed by the acquisition device, the carrier signal is easily affected by many factors such as the complex environment on site. Therefore, Automatic generation of carrier routing information and automatic maintenance of abnormal situations have become a trend.

At present, the power carrier integration manufacturers adopt the carrier channel meter reading technology, which mainly comes from the cooperation with the carrier chip manufacturer. There are two methods as follows: The first method is: construct the topology map and manually specify the route. This method, According to the topological structure diagram of the on-site line, the position status of the ammeter on the site is depicted, so that the distance between the target ammeter and the collection equipment can be known, and the target ammeter is divided into direct reading meter, first-level relay meter, second-level relay meter, The third-level relay meter and the fourth-level relay meter are subdivided, and then the information of the relay path is artificially designated, and all the meters are read step by step. When using this method to read the ammeter, once the ammeter is replaced or the ammeter fails to be read, the only way to manually reset the relay path is to double the number of attempts until the ammeter reads successfully. The second way is to maintain on-site routing information through the master station software; in this way, when the carrier system was launched in the early stage, the acquisition equipment only does data transmission channels and simple storage, and does not need to deal with the meter reading path. The information is copied to the destination meter according to its own rules. In this case, the general collection equipment and the master station system belong to the same integrated manufacturer.

Among the above technologies, constructing a topology map and manually specifying the routing method has two defects: 1. If the renovated community is old and the site line layout is complicated, it is difficult to completely and correctly compose the topology structure; 2. If the meter reading fails, you need to Manually copying route information will increase maintenance costs. The limitations of the main station software maintenance routing are: 1. It does not conform to the principle of independence between layers, destroys the structure, and is difficult to maintain; 2. The system belongs to the same manufacturer, so it is difficult to connect to other manufacturers' equipment, which is not conducive to large-scale promotion.

Contents of the invention

In order to solve the problems existing in the prior art due to the large number of ammeters managed by the acquisition equipment, the carrier signal is easily affected by many factors such as the complex environment on site, it is difficult to construct a topology map and manually specify the routing method to completely and correctly construct the topology structure. Table failure requires manual copying of route information, technical problems that will increase maintenance costs and on-site routing information through the master station software, which does not conform to the principle of independence between layers, destroys the structure, is difficult to maintain, and the system belongs to the same manufacturer. Difficult to access equipment from other manufacturers, which is not conducive to the technical problem of large-scale promotion. The invention provides a two-dimensional relay type automatic routing meter reading method.

The technical solution adopted by the present invention to solve the existing technical problems is to provide a two-dimensional relay type automatic routing meter reading method, the two-dimensional relay type automatic routing meter reading method includes steps: first, the electric meter to be read Carry out step by step stratification, set up the meter reading path, the method of carrying out step by step stratification of the meter to be read is on the basis of successfully selecting the first-level meter as the direct reading meter, using the direct reading meter as the The basis of relay routing, according to the principle of routing relay selection, search and select the second-level meter as the first-level relay, search and select the third-level meter as the second-level relay, and so on until the search and selection of the Nth Level ammeter is used as the N-1 level relay, and the selected ammeter information is stored in the successfully read routing information table; second, select the first level ammeter information reading point in the described ammeter to be read; Third, read the corresponding second-level electric meters under each of the first-level electric meter information reading points; fourth, use each of the second-level electric meters to read the corresponding third-level electric meters under its item. The first-level ammeter is read, and so on until the reading of the lowest-level ammeter is completed; the fifth, the data information of each of the ammeters to be read collected by the first-level ammeter information reading point is summarized to obtain The total data information of each electric meter to be read.

According to a preferred embodiment of the present invention: in the first step, the electric meters to be read are layered step by step, and the formed pattern of the electric meters to be read is two-dimensional.

According to a preferred embodiment of the present invention: the two-dimensional construction method is as follows: the electric meter of the same level is set to extend along the vertical axis, and the electric meter of the first level is used as a direct reading meter, which is used by the second The second-level ammeter read by the first-level ammeter is used as the first-level relay, and the third-level ammeter read by the second-level ammeter is used as the second-level relay, and so on until the Nth-level ammeter , and the Nth-level ammeter is used as the N-1th level relay, and the second-level ammeter to the Nth-level ammeter are set to extend along the horizontal axis.

According to a preferred embodiment of the present invention: in the second step, the reading point of the first-level electric meter information is the first-level electric meter, that is, a direct reading meter or an electric meter data information collection device.

According to a preferred embodiment of the present invention: the selection method of the first-level electric meter is a test frame method, and the selected first-level electric meter is used as a direct reading meter and saved in the successfully read routing information table.

According to a preferred embodiment of the present invention: the principle of selection of the routing relay is: the relay meter must have a successful reading experience, and the last time must be successfully read; the depth of the relay meter must be the next step of the search meter. level; the relay meter and the destination meter are not in the same meter box; the relay meter and the destination meter are on the same line; the relay meter and the destination meter must be in the same phase.

The beneficial effect of the present invention is that compared with the traditional meter reading method, the two-dimensional meter reading automatic routing mode proposed by the present invention can make meter reading faster, and automatically search for the routing information of the destination meter, making subsequent maintenance more trouble-free and less difficult to implement. High practical value.

Description of drawings

Fig. 1. two-dimensional relay type automatic routing meter reading method flow chart in the present invention's two-dimensional relay type automatic routing meter reading method and carrier routing dynamic maintenance method;

Fig. 2. in the two-dimensional relay type automatic routing meter reading method of the present invention, the structural representation of the two-dimensional copying mode;

Fig. 3. routing study flowchart in the two-dimensional relay type automatic routing meter reading method of the present invention;

Fig. 4. the flow chart of carrier routing dynamic maintenance method in the two-dimensional relay type automatic routing meter reading method and carrier routing dynamic maintenance method of the present invention;

Figure 5. Schematic diagram of automatic copying process;

Figure 6. Routing state control diagram;

Figure 7. Schematic diagram of the analysis of the implementation routing working model.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

In order to describe the specific embodiment of the present invention conveniently, at first relevant concepts are defined as follows:

Acquisition device: the carrier concentrator, which has a downlink channel [carrier channel, 485 bus, etc.] and an uplink channel to the master station system, and a device with certain data collection and abnormal detection functions;

Purpose meter: It is the meter that needs to be operated;

Direct reading meter: refers to the nearest batch of destination meters from the collection equipment, and the carrier signal of the collection equipment can be directly reached;

Relay meter: because the destination meter is far away from the collection device, the signal sent by the collection device can only be received through the signal forwarded by other meters, and the meter that transmits the signal to the destination meter is the relay meter;

Route learning: refers to the process of re-finding a feasible meter reading path for the meter.

Specific description is carried out below: please refer to the flowchart of the two-dimensional relay type automatic routing meter reading method in the two-dimensional relay type automatic routing meter reading method and the carrier routing dynamic maintenance method of the present invention in Fig. 1, as shown in Fig. 1 The relay-type automatic routing meter reading method includes the steps: first, the electric meters to be read are layered step by step, and the meter reading path is established; second, the first-level electric meter information is selected in the electric meters to be read. Reading points; third, read the corresponding second-level electric meters under each of the first-level electric meter information reading points; fourth, use each of the second-level electric meters to correspond to its items read the third-level ammeter, and so on until the reading of the lowest-level ammeter is completed; the fifth, the data information of each of the ammeters to be read is collected by the first-level ammeter information reading point Summarize to obtain the total data information of each of the electric meters to be read.

In the second step, the reading point of the first-level electric meter information is the first-level electric meter, that is, the direct reading meter, or it may be an electric meter data information collection device. In a preferred embodiment of the present invention, the information reading point of the first-level electric meter is the first-level electric meter, that is, the direct reading meter.

Please refer to Fig. 2 schematic diagram of the structure of the two-dimensional reading mode in the two-dimensional relay type automatic routing meter reading method of the present invention. The mode of the electric meter to be read is two-dimensional. The two-dimensional construction method is as follows: the same level is set to extend along the vertical axis, and the first-level electric meter is used as a direct reading meter, and the first-level electric meter read by the first-level electric meter The second-level ammeter is used as the first-level relay, and the third-level ammeter read by the second-level ammeter is used as the second-level relay, and so on until the Nth-level ammeter, and the N-level ammeter As the N-1th level relay, the second level ammeter to the Nth level ammeter are set to extend along the horizontal axis. In the embodiment, as shown in Figure 2 of the specification, only three levels of ammeters are set along the horizontal axis, but the present invention is not limited to only setting these three levels, and the number of stages of the ammeters can be extended according to the actual situation.

We propose a two-dimensional reading mode, classify the meters into grades, take the relay depth as the horizontal axis, and take the meters at the same depth as the axis, and reposition each meter for reading and reading. If the meter reading 1 is successful, it will continue to read the purpose meter with this meter relay, read the second-level purpose meter, read the third-level meter with the second-level meter, and read the fourth-level meter with the third-level meter, so There will be no copying defects in the traditional mode.

According to a preferred embodiment of the present invention: the selection method of the first-level electric meter is a test frame method (that is, through the carrier communication protocol, the method of reading the support data identification of the electric meter and judging whether its normal communication is successful), and The selected first-level electric meter is used as a direct reading meter and stored in the successfully read routing information table. On the basis of the successful search of the direct reading meter, the direct reading meter is used as the relay routing basis, and the basis for judging the routing relay selection is the successful reading mark, the last successful reading mark, and the depth of the relaying meter. Auxiliary discrimination is based on methods such as meter box, line number, and meter phase information. According to the principle of relay, search for direct-reading meters that meet the conditions, and then select the better direct-reading meter from the searched direct-reading meters as the relay. Search for the next-level meter that can be read, and save the routing information that has been successfully read.

The principle of selection of the routing relay is as follows: the relay meter must have a successful reading experience, and the last time must be successfully read; the depth of the relay meter must be the next level of the search meter; the relay meter must be connected to the destination meter Not in the same meter box; the relay meter and the destination meter are on the same line; the relay meter and the destination meter must be in the same phase.

On the basis of successfully searching for the first-level relay ammeter, take the first-level relay ammeter as the basis of relay routing, and follow the routing relay selection principle to search for the first-level relay ammeter that meets the requirements, and then use the first-level relay ammeter found out Select the better first-level relay ammeter from the relay ammeter as the relay, search for the second-level ammeter that can be read, and save the successfully read routing information;

In the same way, multi-level purpose meters such as the third-level purpose electric meter and the fourth-level purpose electric meter can be successfully read, and the successfully copied routing information can be saved.

For the specific routing learning process, please refer to FIG. 3 , which is a routing learning flow chart in the two-dimensional relay type automatic routing meter reading method of the present invention.

It should be noted that: in the algorithm, the relay meter is only the upper-level relay meter for the destination meter. In the relay routing, the destination meter only pays attention to the upper-level relay meter, and does not care about the entire path. When selecting relay meters, it is not only necessary to properly select the meters that meet the relay requirements according to the basis of relay discrimination, but also to optimize the meters that meet the requirements and can be used as relays, and select more stable and reliable meters among them as The relay meter preferred by the destination meter will select a feasible relay path more quickly.

Please refer to FIG. 4, the flow chart of the carrier routing dynamic maintenance method in the two-dimensional repeater automatic routing meter reading method and the carrier routing dynamic maintenance method of the present invention.

The carrier routing dynamic maintenance method described in the present invention includes the steps: 1. Find the meter with an abnormal reading result according to the reading result of the meter data; If the learning fails, the relay ammeter at the next level of the selected relay ammeter level is learned, and the cycle is repeated until the route learning of the destination ammeter succeeds.

In the process of re-learning the single-table route in the second step, it is necessary to extract the information in the historical route information table as the basis for re-finding the route. The dynamic maintenance of the carrier route is divided into two modes: meter reading failure maintenance and node deletion maintenance; wherein, the meter reading failure maintenance reacquires a feasible path through a rerouting learning method; the node deletion maintenance adopts a replacement mode, that is, through The problem node conducts the rerouting study of the destination meter of the nearest relay, finds out a new relay node, and then replaces the problem node with a new relay node, and then performs rerouting confirmation for the destination meter of the replaced node.

Please refer to the schematic diagram of the automatic reading process in Figure 5. As shown in Figure 5, the automatic reading is divided into the following states: initialization, update mechanism, automatic meter reading, learning routing, idle mode and protection mechanism; each state is specifically described in the figure. The switching relationship between states, the main functions of each state in the system will be described below: Initialization: When the main task process starts, the main work confirms the carrier scheme, initializes the carrier state, and applies for semaphores; update mechanism: the main task loads non-reset parameters, update the meter database, and obtain the current status; automatic meter reading: the main task is to read the meter information according to the known routing information. When performing the reading task, in principle, the meter is read in a two-dimensional manner. The vertical axis represents the electric meter of the same depth. When reading, select points according to the vertical axis, and extend the reading on the horizontal axis, so that the reading can greatly improve the success rate of reading; routing learning: the main task is when existing routing information is caused by complex factors on the spot When the meter cannot be successfully read, the routing information update mechanism is started; idle state: the main task is switched after the automatic meter reading or routing learning process completes the current task work; protection mechanism: the main task system internally according to certain statistical information, when an exception occurs , it will be reset in time to keep the system working.

The main principle of automatic meter reading: the meter reading mechanism receives the meter reading instruction from the application layer, and reads the data items of the meter according to the two-dimensional reading mode described above. Carry out corresponding routing learning, and then re-read the items that were not received in the previous round of copying, and repeat until all copying is completed. Finally, it enters the idle mode and waits for the application layer to transmit the meter reading instruction again.

There are several states in automatic routing: single table routing, all routing, routing optimization, node update and stop routing. For the specific status, please refer to the routing status control diagram in Figure 6. In the entire routing process: the key process is single-table routing; the specific analysis is shown in Figure 3. Single-table automatic routing process, single-table routing mainly has the following modes:

Direct reading mode: By reading specific data items of the electric meter to see if the reply can be received correctly, to confirm whether the electric meter can communicate normally.

Relay reading mode: By judging the information in the routing structure of the meter, it can be judged whether the meter is relayed by other meters. The specific judgment basis: the successful reading mark of the meter, the last successful reading mark, the routing depth, and the meter box , line number, meter phase information, etc.; when routing, in principle, the same depth and higher success rate meters are preferred for relay routing, and the destination meter is only associated with its superior relay meter, regardless of leapfrog control, independent of each other .

Throughout the implementation process, the entire routing working model is shown in Figure 7, which is specifically divided into stop routing, single-table routing, global routing, and routing optimization. Among them, the focus is on the analysis of routing optimization, which specifically includes optimization selection and node update. The analysis is as follows:

Optimal selection: In the process of carrier routing, multiple feasible routes may appear at the same time. How to optimize the selection? In this routing algorithm, an optimal selection is proposed, and a statistical mechanism is introduced into the routing architecture to add statistical information to each route. When routing reads the meter data, the best routing scheme can be selected. When rerouting and learning, the worst routing information can be eliminated, and then the routing scheme can be updated to achieve optimal selection.

Node update: This is an interface for external calls. In the meter reading system, meter rotation often occurs, so node update in routing is very important, because it can be done by updating the corresponding meter, the routing information is complete, and all rerouting is avoided. , also enhances field operability.

The two-dimensional relay type automatic routing meter reading method and the carrier routing dynamic maintenance method of the present invention have the following characteristics: 1. Under the current reading mode, if the reading mode is read out of order, once there is a node abnormality, a large amount of unnecessary time will be wasted , the efficiency is relatively low, and using a two-dimensional model will avoid this situation and save a lot of time for subsequent rerouting learning. 2. Carrier communication automatic routing learning. This solution will avoid too much labor cost. After the system is installed, the acquisition device will find a feasible path for the destination meter by itself, so that no matter what the site environment is, there is no need for site line topology, as long as there is power transmission You can successfully read the meter. 3. In the automatic routing learning, an optimal relay node scheme is proposed. This method will make the selected relay nodes more stable and reliable. Reading the destination meter through such nodes will be more stable, and the entire routing relay node After optimized selection, it will be more convergent, which is beneficial to system management. 4. The routing self-maintenance process is a summary of on-site experience. Two modes of node abnormality and node deletion are proposed to make the whole algorithm more practical. It automatically maintains the situation that may occur on the site with the algorithm mode, so as to avoid investing more manpower in maintenance. The stability of carrier communication. 5. The present invention has no specific requirements on the carrier scheme category, communication protocol format, and carrier relay maximum depth, and has good scalability. The whole set of methods can grasp the layered thinking well. This method only cares about the data copying process. It does not require too much cooperation from other levels of the program, and has good independence.

To sum up, the beneficial effect of the present invention is that compared with the traditional meter reading method, the two-dimensional meter reading automatic routing mode proposed by the present invention can make meter reading faster, and automatically search for the routing information of the destination meter, making subsequent maintenance more trouble-free and realizing Low difficulty and high practical value.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (7)

1. two-dimentional midsequent automatic route meter reading method, it is characterized in that: described two-dimentional midsequent automatic route meter reading method comprises step:

A1: will treat that the copy reading ammeter carries out layering step by step, set up ammeter copy reading path, with treat method that the copy reading ammeter carries out layering step by step for successful selected first order ammeter as the basis of directly checking meter on, directly to check meter as the transistroute basis, according to middle electromagnetic (type) relay the copy reading experience must be arranged successfully, and for the last time necessary successful copy reading; The middle electromagnetic (type) relay degree of depth must be the next stage of search ammeter; Middle electromagnetic (type) relay and purpose ammeter are not in the same ammeter box; Middle electromagnetic (type) relay and purpose ammeter are in same circuit; Middle electromagnetic (type) relay and purpose ammeter must be in the discrimination principle of same phase place, the selected second level of search ammeter is selected third level ammeter as second level relaying as first order relaying, search, select N level ammeter as N-1 level relaying until search by that analogy, and selected ammeter information is saved in successfully in the copy reading route information table;

A2: treat in the copy reading ammeter selected first order ammeter information copy reading point described;

A3: corresponding second level ammeter under it is carried out copy reading by each described first order ammeter information copy reading point;

A4: by each described second level ammeter corresponding third level ammeter under it is carried out copy reading, by that analogy until the copy reading of finishing bottom ammeter;

A5: each described data message of copy reading ammeter for the treatment of that described first order ammeter information copy reading point is collected gathers, and obtains each described data message for the treatment of that the copy reading ammeter is total.

2. according to the described two-dimentional midsequent automatic route meter reading method of claim 1, it is characterized in that: in the described steps A 1 the described copy reading ammeter for the treatment of is carried out layering step by step, the described of formation treats that the pattern of copy reading ammeter is two-dimentional formula.

3. according to the described two-dimentional midsequent automatic route meter reading method of claim 2, it is characterized in that: the construction method of described two-dimentional formula is, described first order ammeter is set at along the longitudinal axis extends, and with described first order ammeter as directly checking meter, by the described second level ammeter of described first order ammeter copy reading as first order relaying, with the described third level ammeter of described second level ammeter copy reading as second level relaying, by that analogy until N level ammeter, and with described N level ammeter as N-1 level relaying, described second level ammeter to described N level ammeter is set at along transverse axis and extends.

4. according to the described two-dimentional midsequent automatic route meter reading method of claim 1, it is characterized in that: first order ammeter information copy reading point is described first order ammeter described in the described steps A 2.

5. according to the described two-dimentional midsequent automatic route meter reading method of claim 4, it is characterized in that: described first order ammeter is for directly checking meter.

6. according to the described two-dimentional midsequent automatic route meter reading method of claim 4, it is characterized in that: described first order ammeter is the ammeter data information collecting device.

7. according to the described two-dimentional midsequent automatic route meter reading method of claim 1, it is characterized in that: the method for selecting of described first order ammeter is the probe frame method, and the described first order ammeter that will select is saved in successfully in the copy reading route information table as directly checking meter.

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