CN113055463B

CN113055463B - Electric power synchronous meter reading method and meter reading device

Info

Publication number: CN113055463B
Application number: CN202110260556.4A
Authority: CN
Inventors: 赵洪波; 郭小广; 景红; 张增辉
Original assignee: Beijing Zhongzhao Loongson Software Technology Co ltd
Current assignee: Beijing Zhongzhao Loongson Software Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2022-09-02
Anticipated expiration: 2041-03-10
Also published as: CN113055463A

Abstract

A synchronous electric power meter reading method and a synchronous electric power meter reading device relate to the field of electric power. A synchronous electric power meter reading method comprises a main node and a plurality of slave nodes, wherein the main node sends out a synchronous meter reading message in a broadcasting mode, the slave nodes collect electric meter data at the same time after receiving the synchronous meter reading message, and then the electric meter data are respectively transmitted to the main node. Thereby ensuring time synchronism of data. The utility model provides an electric power device of checking meter, includes server, terminal of checking meter, and the terminal communication connection server of checking meter to the server is as the master node, regards the terminal of checking meter as the slave node, and the terminal connection of checking meter is located the ammeter of ammeter incasement.

Description

Electric power synchronous meter reading method and device

Technical Field

The invention relates to the field of electric power, in particular to an electric power meter reading method.

Background

With the development of science and technology, electric power meter reading gradually develops towards the internet. The existing internet-based meter reading device adopts the design of one master node and a plurality of slave nodes. The master node initiates a meter reading command to the meter reading, and the slave node responds. Half-duplex communication, and a multi-node meter reading adopts a polling mode of reading one by one. When the number of slave nodes is large, the time span of reading is large, and especially when wireless communication is used, the time is dozens of minutes or even hours. All node data at a certain time cannot be read. The synchronous data can be used for analyzing the current condition of the power grid more easily and judging the position and the reason of the fault.

Disclosure of Invention

The invention aims to provide a synchronous electric power meter reading method to solve the problems.

The invention also aims to provide a power meter reading device to solve the technical problem.

In order to solve the technical problems, the invention adopts the following technical scheme:

a synchronous electric power meter reading method comprises a main node and a plurality of slave nodes, and is characterized in that the main node sends out a synchronous meter reading message in a broadcasting mode, the slave nodes collect electric meter data at the same time after receiving the synchronous meter reading message, and then the electric meter data are respectively transmitted to the main node. Thereby ensuring time synchronism of data.

Preferably, after receiving the synchronous meter reading message, the slave node directly starts the synchronous meter reading process without comparing the self address. And after the slave node prepares data, detecting whether the data transmission channel is occupied, if so, delaying a random time, and detecting. When the channel is idle, a request is sent to the master node. And after receiving the data message request sent after the confirmation, sending the electric meter data to the main node. And ending the one-time meter reading process until all the slave nodes finish sending.

The utility model provides an electric power device of checking meter, includes server, the terminal of checking meter, and the terminal communication connection server of checking meter to the server is as the master node, regards the terminal of checking meter as the slave node, and the terminal connection of checking meter is located the ammeter of ammeter incasement. The electric meters in the same electric meter box can be provided with a plurality of electric meters, and each electric meter can be respectively connected with one meter reading terminal and can also be connected to the same meter reading terminal. The server and the meter reading terminal are communicated by using a serial port. When the serial port receives data, the channel is occupied, and at the moment, the channel is busy and needs to wait for a period of time to detect. In order to reduce the probability of collision of a plurality of nodes, a random number mode is adopted without using a fixed value for delay time. The starting and ending range of the random waiting time can be configured according to different transmission physical media and the number difference of the slave nodes. As there are carrier slave nodes, wireless slave nodes at the same time. The wireless node has low transmission speed, so that the delay waiting time is prolonged.

Drawings

FIG. 1 is a flow chart of synchronous meter reading of a master node;

FIG. 2 is a slave node response flow diagram;

FIG. 3 is a schematic diagram of a newly added component within the meter box;

FIG. 4 is an enlarged view of the portion A of FIG. 3;

FIG. 5 is an enlarged view of the portion B of FIG. 3;

FIG. 6 is a top view of the structure of FIG. 3;

FIG. 7 is a schematic diagram of a pressing structure of the structure of FIG. 3;

fig. 8 is a frame format diagram.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the invention.

Referring to fig. 1 and 2, a power synchronous meter reading method includes a master node and a plurality of slave nodes, and is characterized in that the master node sends a synchronous meter reading message in a broadcast manner, and the slave nodes collect meter data at the same time after receiving the synchronous meter reading message and then respectively transmit the meter data to the master node. Thereby ensuring time synchronism of data.

376.2 the protocol specifies the frame format, data coding and transmission rules for data transmission between the concentrator and the local communication module interface in the power consumer electricity consumption information acquisition system. The local communication networking method is suitable for local communication networking modes which adopt low-voltage power line carriers, micro-power wireless communication and Ethernet transmission channels, and is suitable for data exchange between the concentrator and the local communication module. The DL/T645 protocol is a communication protocol established for electric meter communication, and has two versions, namely DL/T645-97 and DL/T645-07, 97 represents a protocol established in 97 years, 07 is a modified protocol in 2007, and basically when version 07 comes out, the protocol is to replace the 97-version communication protocol, and is mainstream or 07 at present. 645 frames are transmitted in data units of 376.2.

Extension to the 376.2 protocol:

the format of the synchronous meter reading message is as follows:

the address field A consists of a source address A1, a relay address A2 and a destination address A3, and the format is shown in the following table:

address domain	Data format	Number of bytes
			Source address A1	BCD	6
Relay address A2	BCD	6 relay level
			Destination address A3	BCD	6

"destination address a 3", fills in the slave node address.

According to the 376.2 protocol, reading multiple slave nodes requires sending multiple messages, with addresses corresponding to the addresses of the slave nodes. The message is synchronously read and expanded, and the broadcast address 'AAAAAAAAAA' is filled in by the destination address. The master node broadcasts such downlink messages to all slave nodes. When the slave node judges that the address is the broadcast address, the synchronous meter reading process is started without comparing the local address.

Extension to the 645 protocol:

376.2 the data unit in the protocol is 645 frames. And the slave node carrier module sends the analyzed 645 frames to equipment such as an electric meter and the like. Frame format as shown in fig. 8, the address field also uses the broadcast address "AAAAAAAAAAAA". And when the electric meter judges that the address field is the broadcast address, starting a synchronous meter reading process. And returning the address field in the uplink message to fill the local address, so that the master node can distinguish different slave nodes.

The specific embodiment is as follows:

a main node synchronous meter reading step: s1: and sending a synchronous meter reading downlink message. S2: a request-to-send message is received from a slave node. S3: and returning an acknowledgement message to allow the node to send data. S4: waiting for the data packet sent from the node. S5: and the received data messages are respectively stored in the memory buffer area according to the addresses. S6: and repeating the steps S2 to S5 until all the nodes are processed. S7: and sending the data in the buffer area to an upper layer application.

The slave node responds to the step: s1: and receiving a synchronous meter reading message. S2: preparing data to be reported, generating an uplink message, and generating a timestamp by using the current time. S3: it is detected whether the channel is busy. If busy, delay for a period of time (length of time generated using random numbers) and detect. If the serial port receives the data, the channel is busy and occupied by a certain node. S3: when the channel is not busy, a request message is sent, and data is requested to be sent to the main node. S4: and receiving the main node confirmation message. S5: the data message prepared in S2 is sent. S6: and finishing the one-time meter reading process. Only one node can transmit data at the same time, and a plurality of nodes can transmit data at the same time, which causes data confusion. Collision is prevented as follows.

The utility model provides an electric power device of checking meter, includes server, terminal of checking meter, and the terminal communication connection server of checking meter to the server is as the master node, regards the terminal of checking meter as the slave node, and the terminal connection of checking meter is located the ammeter of ammeter incasement. The electric meters in the same electric meter box can be provided with a plurality of electric meters, and each electric meter can be respectively connected with one meter reading terminal and can also be connected to the same meter reading terminal. The server and the meter reading terminal are communicated by using a serial port. When the serial port receives data, the channel is occupied, and at the moment, the channel is busy and needs to wait for a period of time to detect. In order to reduce the probability of collision of a plurality of nodes, a random number mode is adopted without using a fixed value for delay time. The starting and ending range of the random waiting time can be configured according to different transmission physical media and the number difference of the slave nodes. As there are carrier slave nodes, wireless slave nodes at the same time. The wireless node has low transmission speed, so that the delay waiting time is prolonged.

Referring to fig. 3, 4, 5, 6 or 7, the electric meter box may further include a base 1, the base 1 is provided with a second groove 23, a backing plate 22 is fixedly disposed inside the second groove 23, a rotating plate 25 is disposed inside the second groove 23, rotating shafts 26 are fixedly disposed at both front and rear ends of the rotating plate 25, one ends of the rotating shafts 26, which are close to the second groove 23, are respectively sleeved with a second ball bearing 27, the second ball bearings 27 are fixedly connected with the second groove 23, a second motor 24 is fixedly disposed at the back of the base 1, a power output shaft of the second motor 24 penetrates through the base 1 and extends into the second ball bearings 27 to be fixedly connected with the rotating shafts 26, a mounting cylinder 5 is fixedly disposed at the top of the rotating plate 25, a first motor 17 is fixedly disposed at the bottom of the left side of the mounting cylinder 5, a power output shaft of the first motor 17 penetrates through the mounting cylinder 5 and extends into the mounting cylinder 5 to be fixedly connected with a second bevel gear 21, mounting plates 16 are fixedly disposed at inner walls of both left and right sides of an inner cavity of the mounting cylinder 5, a first screw rod 4 is arranged below the mounting plate 16, two ends of the first screw rod 4 are both sleeved with first ball bearings 15, belt pulleys 18 are fixedly arranged on the first screw rod 4, the two belt pulleys 18 are connected through a belt 19, a first bevel gear 20 is fixedly arranged on the first screw rod 4 positioned on the left side of the inner cavity of the mounting cylinder 5, the first bevel gear 20 is meshed with a second bevel gear 21, a threaded block 3 is connected on the first screw rod 4 in a threaded manner, the first ball bearing 15 positioned at the top end of the first screw rod 4 is fixedly connected with the mounting plate 16, the first ball bearing 15 positioned at the bottom end of the first screw rod 4 is fixedly connected with the mounting cylinder 5, a stand column 6 is fixedly arranged between the two threaded blocks 3, a placing mechanism is fixedly arranged at the top of the stand column 6, the placing mechanism comprises a pressing structure, a camera 8, a movable plate 9, a base 10, a first groove 13 and a spring 14, the base 10 is fixedly connected with the stand column 6, the base 10 is provided with a first groove 13, the movable plate 9 is connected with the first groove 13 in a sliding manner, the movable plate 9 is connected with the first groove 13 through a plurality of springs 14, the camera 8 is arranged at the top of the movable plate 9, a pressing structure is arranged at the left side of the camera 8 and fixedly connected with the base 10, the pressing structure comprises a pressing plate 7, a placing plate 28, a connecting plate 29, a third groove 30, a second screw 31 and a third ball bearing 32, the placing plate 28 is fixedly connected with the base 10, the third groove 30 is arranged on the placing plate 28, the second screw 31 is arranged in the third groove 30, the third ball bearing 32 is sleeved at the bottom of the second screw 31, the third ball bearing 32 is fixedly connected with the third groove 30, the connecting plate 29 is connected with the second screw 31 in a threaded manner, the connecting plate 29 is connected with the third groove 30 in a sliding manner, the pressing plate 7 is fixedly arranged on the surface of the connecting plate 29, the pressing column 11 is fixedly arranged at the bottom of the movable plate 9, the self-resetting pressing switch 12 is arranged below the pressing column 11, the self-resetting type press switch 12 is fixedly connected with the first groove 13, the self-resetting type press switch 12 and the press column 11 are both located inside the spring 14, the top of the base 1 is fixedly provided with the indicator lamp 2, and the indicator lamp 2 is electrically connected with the self-resetting type press switch 12. The base is fixed in the bottom of ammeter case.

The working principle is as follows: through starting second motor 24, second motor 24 drives rotor plate 25 through pivot 26 and rotates, rotor plate 25 drives installation section of thick bamboo 5 and rotates, when installation section of thick bamboo 5 is perpendicular with base 1, can stop second motor 24, start first motor 17 afterwards, first motor 17 drives second bevel gear 21 and rotates, second bevel gear 21 drives first bevel gear 20 round and rotates, first bevel gear 20 drives first screw rod 4 and rotates, first screw rod 4 passes through belt pulley 18, belt 19 makes another first screw rod 4 rotate, thereby make thread block 3 drive stand 6 and reciprocate, and then send camera 8 to the different height department in the ammeter case, thereby shoot the ammeter that is located different height department.

This patent installation and unpick and wash all very conveniently, when needs are demolishd, the accessible rotates second screw 31, make clamp plate 7 keep away from camera 8 and can take off camera 8, when needs installation camera 8 shoots, place camera 8 on fly leaf 9, rotate second screw 31, second screw 31 makes clamp plate 7 move down, the clamp plate 7 that moves down extrudes camera 8, make camera 8 also move down thereupon, when camera 8 moves down to the assigned position, press post 11 of fly leaf 9 bottom rigid coupling and press from restoring to the throne formula push switch 12, from restoring to the throne formula push switch 12 start-up pilot lamp 2, then explain camera 8 installation completion.

The first motor, the second motor and the camera are all connected with a meter reading terminal. The meter reading terminal collects the data of the electric meter firstly, then collects the data of the camera, and after the data uploading of the electric meter is finished. And when a data instruction of the camera uploaded by the server is received, uploading the data of the camera. Therefore, the electric meter data is rechecked, and the electric meter data is prevented from making mistakes. Although the data acquisition time of the camera and the data acquisition time of the electric meter are not always the same, the data change is not large and can be expected due to the short interval between the front and the back, and the key point is that the camera data is picture data which is not easy to be falsified, so the camera data is allowed and can be reliably used as data for rechecking.

The shell of the electric meter box comprises a shell with an outward opening and a box door used for sealing the opening of the shell, and an electronic lock is arranged between the shell and the box door. Therefore, irrelevant personnel are prevented from opening the box door, and particularly, thieves can be prevented from stealing the electronic equipment such as the camera, the meter reading terminal and the like. The electronic lock is connected with the meter reading terminal and is provided with a fingerprint identification module. And the electronic lock uploads the identified fingerprint, opening time, opening duration and other information to the server through the meter reading terminal. The server can further determine the conditions of overhaul, maintenance and the like of the electric meter box according to the parameters. The base can be fixed at the bottom of the shell and can also be fixed on the box door. The door and the shell are preferably made of opaque materials. Such as alloy materials, stainless steel materials, and the like. Therefore, the safety level is improved, valuable components are prevented from being found by thieves, and the possibility of being pried and disassembled is reduced. The opaque door makes the interior light darker. In order to ensure the quality of the image acquired by the camera, a light supplement lamp can be arranged on the right side of the camera 8 and connected with the meter reading terminal. Preferably, the light supplement lamp is started when the camera is started by the meter reading terminal, and the light supplement lamp is turned off when the camera is turned off by the meter reading terminal. Preferably, a communication module is arranged in the meter reading terminal and is connected with a signal antenna. In order to avoid the shielding of the shell and the box door of the electric meter box on signals and the shielding of the cavity on the signals. The outer side of the box door is provided with a metal plate, and the signal antenna penetrates through the box door and is connected with the metal plate. The metal plate is preferably a metal plate having a square frame shape. The metal plate is embedded into the outer edge of the box door, and the metal plate can also cover the outer edge of the box door. The metal sheet of this pattern, on the one hand, be difficult to by whole shielding, can effectively guarantee the transmission of signal, on the other hand has the decorative effect to the chamber door.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The electric power meter reading device is characterized by comprising a server and a meter reading terminal, wherein the meter reading terminal is in communication connection with the server, the server is used as a main node, the meter reading terminal is used as a slave node, and the meter reading terminal is connected with an electric meter in an electric meter box;

the master node sends out a synchronous meter reading message in a broadcasting mode, the slave nodes collect the electric meter data at the same time after receiving the synchronous meter reading message, and then the electric meter data are respectively transmitted to the master node, so that the time synchronism of the data is ensured;

the electric meter box is also internally provided with a base, a second groove is arranged on the base, a backing plate is fixedly arranged in the second groove, a rotating plate is arranged in the second groove, rotating shafts are fixedly arranged at the front end and the rear end of the rotating plate, one end of each rotating shaft close to the second groove is sleeved with a second ball bearing, the second ball bearings are fixedly connected with the second groove, a second motor is fixedly arranged on the back surface of the base, a power output shaft of the second motor penetrates through the base and extends into the second ball bearings to be fixedly connected with the rotating shafts, an installation cylinder is fixedly arranged at the top of the rotating plate, a first motor is fixedly arranged at the bottom of the left side of the installation cylinder, a power output shaft of the first motor penetrates through the installation cylinder and extends into the installation cylinder to be fixedly connected with a second bevel gear, installation plates are fixedly arranged on the inner walls of the left side and the right side of an inner cavity of the installation cylinder, a first screw rod is arranged below the installation plates, first ball bearings are sleeved at the two ends of the first screw rod, a belt pulley is fixedly arranged on the first screw rod, two belt pulleys are connected through a belt, a first bevel gear is fixedly arranged on a first screw rod on the left side of an inner cavity of an installation barrel, the first bevel gear and a second bevel gear are meshed, a threaded block is connected to the first screw rod in a threaded manner, a first ball bearing on the top end of the first screw rod is fixedly connected with an installation barrel, a stand column is fixedly arranged between the two threaded blocks, a placing mechanism is fixedly arranged at the top of the stand column and comprises a pressing structure, a camera, a movable plate, a base, a first groove and a spring, the base is fixedly connected with the stand column, a first groove is formed in the base, the movable plate is slidably connected into the first groove and is connected with the first groove through the springs, the camera is arranged at the top of the movable plate, a pressing structure is arranged on the left side of the camera, the pressing structure is fixedly connected with the base, and comprises a pressing plate, The automatic reset type pressing switch is arranged below the pressing column and fixedly connected with the first groove, the automatic reset type pressing switch and the pressing column are located inside the spring, an indicator lamp is fixedly arranged at the top of the base, and the indicator lamp is electrically connected with the automatic reset type pressing switch;

the first motor, the second motor and the camera are all connected with a meter reading terminal.

2. The electric power meter reading device according to claim 1, wherein the server and the meter reading terminal communicate by using a serial port.

3. The power meter reading device of claim 1, wherein the base is fixed to the bottom of the meter box.

4. The electric meter reading device according to claim 1, 2 or 3, wherein the housing of the electric meter box comprises a shell with an outward opening, a box door for sealing the opening of the shell, and an electronic lock is arranged between the shell and the box door.

5. The electric power meter reading device according to claim 1, wherein after receiving the synchronous meter reading message from the node, the slave node directly starts a synchronous meter reading process without comparing its own address.

6. The electric meter reading device according to claim 1, wherein after the slave node prepares the data, it detects whether the data transmission channel is occupied, if so, it delays a random time and then detects;

when the channel is idle, sending a request to the main node, and after receiving the confirmation, sending electric meter data to the main node;

and ending the one-time meter reading process until all the slave nodes finish sending.

7. The power meter reading device according to claim 1, wherein the master node synchronously reads:

s1: sending a synchronous meter reading downlink message;

s2: receiving a request sending message of a slave node;

s3: returning a confirmation message to allow the node to send data;

s4: waiting for a data message sent by the slave node;

s5: receiving data messages, and storing the data messages in a memory buffer area according to addresses;

s6: repeating the steps S2 to S5 until all nodes are processed;

s7: and sending the data in the buffer area to an upper layer application.

8. The power meter reading device according to claim 1, wherein the slave node responds to the step of:

s1: receiving a synchronous meter reading message;

s2: preparing data to be reported, generating an uplink message, and generating a timestamp by using the current time;

s3: detecting whether the channel is busy, if so, delaying for a period of time and then detecting;

s3: when the channel is not busy, sending a request message, and firstly requesting to send data to a main node;

s4: receiving a main node confirmation message;

s5: sending the data message prepared in the S2;

s6: and finishing the one-time meter reading process.