KR20180133171A - Remote meter reading system for calorimeter - Google Patents

Abstract

According to characteristics of the present invention, provided is a remote reading system for a calorimeter. A remote reading system for a calorimeter comprises: a plurality of calorimeters (100) which are respectively connected to calorimeters (10) which are installed at each room and receive reading data which is measured at a calorimeter (10), mutually form a mesh network (20) by using a wireless frequency in a bandwidth of 900 MHz, and output reading data which is received through a formed mesh network (20); and a data concentrating device (200) which includes a device communication unit (210) for receiving reading data which is output from each calorimeter communication module (100) and a control unit (220) for gathering and managing received reading data by separating each room. The communication unit (210) is signal-connected to each calorimeter communication module (100) through a mesh network (20), operates as a base station (BS) for collecting and uploading reading data to a control unit (220), and forms an N:1 mesh network between each calorimeter communication module (100) and a device communication unit (210).

Description

{REMOTE METER READING SYSTEM FOR CALORIMETER}

The present invention relates to a calorimeter remote meter reading system, and more particularly, to a calorimeter remote meter reading system that can collectively calibrate a plurality of calorimeters installed in each room in a remote place, simplify communication structure, and easily modify debugging and setting items. The present invention relates to a calorimeter remote meter reading system.

Generally, in an apartment building or a building where district heating is performed, a calorimeter is installed for each room, and the calories used for each room are measured and the calorie consumption fee is collected. Since the calorimeter is installed in the room of each room, the staff of the station must visit each room and meter the calorimeter, so there was inconvenience that labor cost rises and meter reading can not be performed when residents are absent from the room.

On the other hand, ZigBee communication network of 2.4GHz radio frequency band is mainly used as means of communication of things Internet. However, in case of 2.4GHz radio frequency band, the data rate is very high compared to other communication networks, but the communication distance is very short, about 10m. Usually, the calorimeter is installed in the hot water supply pipe inside the sink, In addition, there is a problem that when the distance between each room and the management room is long like a high-rise building, the communication distance can not be used due to insufficient communication distance.

In addition, in the conventional standardized mesh network, a technique has been developed to allow communication between any two nodes among N: N, that is, the communication network is complicated.

ZigBee mesh network stack is a chip maker that makes ZigBee communication IC supply mesh stack with library and does not open source, so it is not possible to change the configuration except standardized configuration. This is impossible. Therefore, when such a technique is applied to IoT, there is a problem in that it can not be modified depending on an application and a field situation, and thus optimization is impossible. That is, it is impossible to change the algorithm or modify the configuration itself according to the situation of the site, and when the problem occurs during the operation, the mesh network operates like a black box as a kind of debugging.

In this way, when normal operation can not be achieved due to an operation error or the like, it is troublesome to debug or modify the setting items according to the situation of the field, which is a cause of lowering the reliability of the wireless meter reading.

Registered Patent Publication No. 10-1529563 (May 2015), Transmission facility using mesh network smart sensor and power facility management system for underground joint.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a calorimeter communication module and a calorimeter communication module, which can provide a sufficient communication distance and diffraction property by performing remote meter reading using a radio frequency of 900 MHz band, And an object of the present invention is to provide a calorimeter remote meter reading system capable of increasing the reliability of wireless meter reading by simplifying the communication structure and facilitating debugging and modification of setting items by forming an N: 1 mesh network between data concentrators.

According to an aspect of the present invention, the meter reading data measured by the calorimeter 10 are connected to the calorimeter 10 installed in each room, and the mesh network 20 is formed between the calorimeters 10 and the calorimeter 10 using the 900 MHz band radio frequency A plurality of calorimeter communication modules 100 for outputting meter reading data received through the formed mesh network 20; A device communication unit 210 for receiving meter reading data outputted from each calorimeter communication module 100, and a control unit 220 for collecting and managing the received meter reading data by each room. The apparatus communication unit 210 operates as a base station (BS) that is connected to the calorimeter communication module 100 through the mesh network 20 and collects the meter reading data and uploads the collected meter reading data to the controller 220, And a N: 1 mesh network is formed between the calorimeter communication module 100 and the apparatus communicating section 210. In this case,

According to another feature of the present invention, the meter reading data measured in the calorimeter 10 are connected to the calorimeter 10 installed in each room, and the meter reading data measured in the calorimeter 10 are received, A plurality of calorimeter communication modules (100) for forming metering data received through the lower stage mesh network (21) and outputting the metering data received; A first communication module 310 for receiving the meter reading data signally output from the calorimeter communication module 100 through the lower stage mesh network 21 and outputting the meter reading data to the calorimeter communication module 100, A bridge 300 including a second communication module 320 for outputting metering data for each room; And a control unit (220) for collecting and managing the received inspection data by classifying the received inspection data for each room, wherein the data communication unit (210) receives the inspection data for each room from the second communication module (320) The first communication module 310 is connected to each calorimetric communication module 100 via the lower end mesh network 21 and collects meter reading data and transmits the collected data to the second communication module 320. [ 1 network between the calorimeter communication module 100 and the first communication module 310 by operating as a base station (BS) that uploads the calorimetric data to the first communication module 310.

According to another aspect of the present invention, the first communication module 310 is normally inactivated and does not operate as a BS, and is activated when receiving a command signal from the data concentrator 200 to operate as a BS. An automatic meter reading system is provided.

According to another aspect of the present invention, the calorimeter remote meter reading system is constructed for a plurality of building blocks, each calorimeter communication module 100 is installed for each room, and the calorimeter 10 of the room is installed. And a plurality of bridges 300 are disposed for each of the modules so that the calorimeter communication module 100 and the first communication module 310 of each room included in the room form the lower end mesh network 21 And the second communication module 320 of each bridge 300 forms an upper end mesh network 22 with a radio frequency of a predetermined band, And outputs it to the communication unit 210 side.

As described above, according to the present invention,

First, each calorimeter communication module 100, which receives the meter reading data measured by the calorimeter 10 in signal connection with the calorimeter 10 installed on a room-by-room basis, transmits the mutual mesh network 20 using the 900 MHz band radio frequency Therefore, even if the calorimeter communication module 100 is installed in a place where the structure is sealed or has a large number of peripheral obstacles like the inside of the sink, wireless communication is possible, Even when the separation distance between each room and the management room is long, it is possible to provide a sufficient communication distance, thereby providing the effect that there is no communication restriction to the remote meter reading of the calorimeter 10.

Second, the device communication unit 210 of the data concentrator 200, which collects and manages meter reading data output from each calorimeter communication module 100, is connected to each calorimeter communication module 100 through the mesh network 20 1 mesh network between the calorimeter communication module 100 and the device communication unit 210 by operating as a base station (BS) that collects the meter reading data and uploads the meter reading data to the controller 220 as an upper stage, The communication structure is simple and the debugging and the setting items can be easily modified as compared with the case where the communication is performed in the N: N manner.

Each calorimeter communication module 100 forms a lower stage mesh network 21 for transmitting metering data to each other and is connected between the calorimeter communication module 100 and the data concentrator 200, A first communication module 310 for receiving the meter reading data signally connected to the calorimeter communication module 100 through the first communication module 21 and the meter reading data for each room received through the first communication module 310, The first communication module 310 is connected to the calorimeter communication module 100 via the lower stage mesh network 21 and the second communication module 320 is connected to the first communication module 310. [ 1 mesh network between each calorimetric communication module 100 and the first communication module 310 by operating as a BS that collects the meter reading data and uploads it to the second communication module 320 as an upper stage, A mesh network is formed between the communication module 100 and the device communication unit 210 The communication structure is simple and the reliability of wireless metering can be increased as well as the time delay and data bottleneck in the mesh network can be effectively prevented.

Fourth, since the first communication module 310 of the bridge 300 is normally inactivated and does not operate as a BS but is activated when receiving a command signal from the data concentrator 200, the first communication module 310 operates as a BS. It is possible to efficiently change the operation mode according to the data traffic state.

Fifth, the calorimeter remote meter reading system is constructed for a plurality of building blocks, each of the calorimeter communication modules 100 is installed for each room and is connected to the calorimeter 10 of the room, The bridge 300 is disposed for each bridge so that the calorimeter communication module 100 and the first communication module 310 of each room included in the bridge form the lower end mesh network 21, The second communication module 320 of the second communication module 320 forms an upper end mesh network 22 using radio frequencies of a predetermined band and outputs the upper end mesh network 22 to the device communication unit 210 received via the upper end mesh network 22 So that it can be optimized for remote metering of the calorimeter 10 provided for each room of the apartment complex or the villa complex.

1 is a schematic view showing a configuration of a calorimeter remote meter reading system according to a preferred embodiment of the present invention,
2 is a block diagram illustrating a mesh network connection structure of a calorimeter remote meter reading system according to a preferred embodiment of the present invention.
FIG. 3 is a schematic view for explaining a remote meter reading operation method of the calorimeter remote meter reading system according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view for explaining an operation principle in which mutual uplink and downlink are formed between a data concentrator and each calorimeter communication module according to a preferred embodiment of the present invention;
FIG. 5 is a schematic view showing a configuration in which meter reading data of each calorimeter communication module is transmitted to a data concentration device through a bridge according to a preferred embodiment of the present invention;
FIG. 6 is a block diagram illustrating a structure in which a calorimeter communication module and a data concentrator are signal-connected through a bridge according to a preferred embodiment of the present invention;
FIG. 7 is a block diagram for explaining how a command signal of a data concentration device is transmitted to each calorimeter communication module through a bridge according to a preferred embodiment of the present invention.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The remote meter reading system according to the preferred embodiment of the present invention is a meter reading system that can collectively meter a plurality of calorimeters 10 installed in each room in a remote place, has a simple communication structure, and can easily modify debugging and setting items, And includes a calorimeter communication module 100 and a data concentrator 200 as shown in FIGS.

First, the calorimeter communication module 100 acquires measurement data measured by the calorimeter 10 installed in each room and transmits the data to the data concentrator 200. The communication device 100 communicates with the calorimeter 10 installed in each room, 1 to receive meter reading data measured by the calorimeter 10 and to form a mesh network 20 using radio frequencies in the 900 MHz band and to transmit the measured data through the mesh network 20 And outputs the received meter reading data to the data concentrator 200 side.

As shown in the figure, the calorimeter communication module 100 installed in the room adjacent to the calorimeter 10 with radio frequency of 900 MHz, which is excellent in diffraction and has a communication distance of about 1 km, So that it is possible to smoothly perform wireless communication even if it is installed in a place where the inside of the structure is enclosed like the inside of the sink or where obstacles are scattered in the surroundings, and the calorimeter communication module 100 can be connected to the living room Or the wall of the kitchen, it is possible to reduce the installation cost.

The data concentrator 200 includes a device communication unit 210 for receiving meter reading data output from each calorimeter communication module 100 as a data collection device for collecting meter reading data of each calorimeter 10, And a control unit 220 for collecting and managing data classified by each room.

As shown in FIG. 1, the data concentrator 200 includes a management terminal 400 installed in a remote place such as a management room, a WAN, a Wadae Area Network, a LAN, a local network, And a serial communication protocol such as a serial communication protocol, and receives a command signal to operate and control, and transmits the collected meter reading data to each room so that the manager can check the meter reading data.

The management terminal 400 is a terminal device for browsing the meter reading data received from the data concentrator 200 and driving and controlling the data concentrator 200 and the calorimeter communication module 100, Server, or a communication device such as a smart phone, a notebook, or a tablet. The manager controls the data concentrator 200 through the management terminal 400 to collect and upload the meter reading data acquired by each calorimeter communication module 100 and read the meter reading data uploaded through the display And remotely control the operation of the calorimeter communication module 100, such as resetting each calorimeter communication module 100.

The management terminal 400 may be installed in a place where monitoring and meter reading software are installed and connected to the data concentrator 200 through a local area network to manage each room in a complex such as an apartment management room, It can be remotely located remotely.

In addition, the device communication unit 210 is connected to each calorimeter communication module 100 through the mesh network 20 using a 900 MHz band radio frequency in the same manner as the calorimeter communication module 100, collects meter reading data, 1 mesh network between each calorimeter communication module 100 and the device communication unit 210 by operating as a BS (Base Station)

More specifically, in the calorimeter remote meter reading system according to the preferred embodiment of the present invention, there is only one BS in the network unlike the N: N network pursued by the standardized mesh network technology. In the case of configuring the basic system, the device communication unit 210 of the data concentrator 200 operates as a BS, and each calorimeter communication module 100, which is an end node, transmits data. Here, each calorimeter communication module 100 operates as a sensor network relay station (SNRS) in the mesh network 20.

Generally, in a ZigBee mesh network using a 2.4 GHz band, since the communication speed is about 250 Kbps or more, the overhead for maintaining the ZigBee network is relatively low in the network, so that the complicated N: N mesh network protocol is not a big problem . However, the typical communication speed at 900MHz, LaRa and FSK, which are commercialized are 5Kbps and 38.4kbps, respectively, which is a typical communication speed. Since the speed is slow, the overhead for implementing and maintaining the N: N mesh network is relatively , So it is limited to apply the N: N mesh network.

In addition, almost all IoT applications use N: 1 structures that do not require N: N, which is relatively simple and less overhead than a complex, overhead N: N mesh network, , The protocol is simple and non-standard mode, so it is easy to modify and easy to debug according to the situation of the site.

The data concentrator 200 can use both a polling method and an event driven method in collecting meter reading data of each calorimeter communication module 100. However, in the case of the calorimeter, since the metering data capacity is small and the metering cycle (for example, once a day) is long, the polling method is advantageous because it can fundamentally avoid data collision.

3, the data flow between the calorimeter communication module 100 and the data concentrator 200 is shown. Referring to the drawing, when the device communication unit 210 (BS) receives the inspection instruction word ($ Wrdp1 = 37: FA: 1) output from the control unit 220 of the data concentration device 200, (Report Downlink Packet) or Bd2-pkt (Broadcasted Downlink2 Packet).

The calorimeter communication module 100 (SNRS) receives the meter reading command and sends the meter reading command to the calorimeter 10, collects the result, and transmits it to the device communication unit 210 (BS) in the form of Ru-pkt.

In order for the data concentrator 200 to measure the calorimeter 10 of a specific room, a routing path is generally formed from the BS (device communication unit 210) to the calorimeter communication module 100 of the calorimeter 10 For example, in order for the command signal of the controller 220 to be transmitted to the calorimeter communication module 100, a downlink path must be formed between the apparatus communicator 210 of the BS and the calorimeter communication module 100, 10 to be transmitted to the device communication unit 210, an uplink path must be formed.

In order to form the uplink path, the BS (first communication module 310) broadcasts a short packet of Bd1-Pkt (Broadcasted Downlink1 Packet) in a broadcast form, ) Can update the uplink tables of all SNRSs 100 in the network by receiving and updating the uplink table, increasing the hop if necessary, and then re-broadcasting Bd1-Pkt.

On the other hand, when a packet is transmitted from the calorimeter communication module 100 (SNRS) of the specific calorimeter 10 to the device communication unit 210, BS, the packet is naturally transmitted from the device communication unit 210 to the corresponding calorimeter communication module 100 The downlink is updated in the downlink table of the calorimeter communication module 100 (SNRS). Therefore, in order for the downlink path to be formed, the data signal from the calorimeter 10 must be received at least once before the command signal transmitted thereafter can be transmitted from the device communication unit 210, BS to the calorimeter communication module 100 (SNRS).

In the case of the calorimeter, the meter reading is performed by a simple data acquisition procedure in which the data concentration apparatus 200 sends a reading command to the calorimeter 10 and receives the result of the reading. For this purpose, the first method is as shown in (a) , It is determined whether the downlink path (address) is registered to the specific calorimeter communication module 100 (SNRS). If the path is already registered, Rd-pkt (Report Downlink Packet) is transmitted toward the calorimeter communication module 100 If the path is not registered, if CMD is set to 19 during Bd2-pkt (Broadcasted Downlink2 Packet), the calorimeter communication module 100 (SNRS) receives the simple message from the device communication unit 210 And then a downlink path is formed.

4 (b), if it is not necessary to determine whether a downlink table is formed, if the meter reading command (37 in the embodiment) is transmitted on Bd2-pkt, the corresponding calorimeter communication module 100, SNRS) recognizes it and operates to directly report the meter reading data. The second method is easier and more effective than the first method, unless the calorimeter has a large number of mistakes (for example, thousands of generations).

Here, the Rd-pkt and the Ru-pkt (Report Downlink Packet) are transmitted after the transmission from the other party to the consensus, and the Ru-pkt is SNRS Rd-pkt to BS means a packet that the BS sends to the SNRS.

In addition, Bd1-pkt (Broadcasted Downlink1 Packet) is a broadcast type packet that the BS sends to all SNRSs. When all SNRSs receive this Bd1-pkt, it updates its mesh uplink table and increases hop by 1 Transfer Bd1-pkt to the periphery. In addition, Bd2-pkt is another broadcast type packet sent by the BS. If Bd1-pkt is for updating the mesh uplink table, this Bd2-pkt sends a specific command to a specific SNRS, In the form of a broadcast without the need. 4 (a) shows a case in which a specific SNRS is not registered in the downlink table and is used to send a command requesting registration to the old SNRS (Rd-pkt can not be used because it is not registered) 4 (b) shows an example of using Bd2-pkt to send the readout command to the SNRS immediately without requiring a downlink table.

In addition, in the uplink table, the NID (Network ID, network address) of the final destination BS, the NID (RSu) of the device immediately above the hop, the sequence number, and the RSSI value form one row, The columns are contained in a table. Each time a Bd1-pkt is received, a new row is added, there is no change, and the order of the rows changes.

The destination address (RSu) directly above the destination BS to which the payload is to be transmitted is derived from the uplink table. The lower the hop value, the lower the RSSI value, the higher the priority and the RSu of the highest priority column becomes the destination address . Then, after the SNRS receives the Bd1-pkt and updates the uplink table with the hop, BS NID, sequence number, etc. in the SNRS, it generates a new Bd1-pkt by incrementing the hop by 1 and broadcasts it around. Therefore, the larger the hop information of the received Bd1-pkt, the more Bd1-pkt transmitted from the BS, which means that the path is far from the BS, and the priority in the uplink table is lowered.

On the other hand, since the meter reading data of the calorimeter 10 can be collected only about once a day, it is usually sufficient to collect the data through the single mesh network 20 in the polling manner in the data concentrator 200. However, when the number of calorimeter communication modules 100 included in the mesh network 20 is excessively large or the number of calorimeter communication modules 100 included in the mesh network 20 exceeds the number of calorimeter communication modules 100 through the mesh network 20, Or bottlenecks can occur in certain areas.

5 and 6, in the calorimeter remote meter reading system according to the preferred embodiment of the present invention, a bridge 300 is disposed between each calorimeter communication module 100 and the data concentrator 200, So that communication can be smoothly performed.

More specifically, the plurality of calorimeter communication modules 100 form a lower end mesh network 21 using radio frequencies in the 900 MHz band and transmit the metering data received through the lower end mesh network 21 .

The bridge 300 includes a first communication module 310 for receiving meter reading data signaled to be output from the calorimeter communication module 100 through the lower stage mesh network 21, The device communication unit 210 of the data concentrator 200 includes a second communication module 320 of the bridge 300 and a second communication module 320 of the second communication module 320 of the bridge 300, ) For each room.

The first communication module 310 is connected to the calorimeter communication module 100 through the lower end and operates as a base station (BS) that collects meter reading data and uploads the collected meter reading data to the second communication module 320, And forms an N: 1 mesh network between the communication module 100 and the first communication module 310.

That is, the first communication module 310 of the bridge 300 serves as a BS, collects meter reading data of each calorimeter communication module 100, and transmits the collected meter reading data to the second communication module 320 And transmits it to the data concentrator 200.

Here, as shown in FIG. 5, each of the calorimeter communication modules 100 is grouped into a plurality of groups according to predetermined criteria (for example, the same unit), and one bridge 300 is matched for each group. At this time, the first communication module 310 of the bridge 300, which is matched with the calorimeter communication module 100 included in the group, forms the lower stage mesh network 21 for transmitting the meter reading data. In addition, each of the bridges 300 and the device communication unit 210 of the data concentrator 200 form a high-end mesh network 22 for collecting metering data. That is, the bridge 300 acts as a relay for connecting the lower stage mesh network 21 and the upper stage mesh network 22. In the upper stage mesh network 22, a radio frequency of a frequency band different from that of the lower stage mesh network 21 is used.

In addition, the first communication module 310 is normally disabled and does not operate as a BS. When the first communication module 310 receives a command signal from the data concentrator 200, the first communication module 310 acquires the meter reading data of each calorimeter communication module 100, It works as a BS to upload. For example, when the data concentrator 200 sends a reset command to each bridge 300, the bridge 300 receives it and broadcasts a reset command.

When the system is configured to collect the meter reading data from the bridge 300 for each group, the frequency and the group ID of the calorimeter communication module 100 may be set differently for each group together with the bridge 300. The first communication module 310 of the bridge 300 performs the role of a BS in a group unit and collects the metering data and when the second communication module 320 of the bridge 300 receives the metering data, (Relay Station) of the base station 22 and transfers it to the data concentrator 200.

Here, the measurement of the calorimeter 10 can be performed through the mesh network 20 without installing the bridge 300 as described above. However, if the number of transmissions increases through the mesh network 20 after the transmission is not performed at a time, the communication time increases and the device communication unit 210 may collect data after a predetermined time. If such a room (generation) appears on a regular basis, an improvement measure is required. The bridge 300 can be a solution to this problem.

That is, when a bad room with a very long or uncomplicated communication time occurs without a normal operation, the bridge 300 nearer to the room is commanded to read the bad room and the bridge 300 ) Receives the command, it will act as a BS toward the calorimeter 10 and attempt to meter. Such a function may be a method in which, when a poor quality defect is generated rather than automatic detection, it is confirmed by the manager that the defect is improved by manual inspection, and then the defect inspection room is set to be inspected through the specific bridge 300.

Meanwhile, the remote meter reading system according to the preferred embodiment of the present invention can be installed in an apartment complex or a villa complex, and remote calorimetry of the calorimeter 10 provided for each room of the complex can be performed. To this end, the calorimeter remote meter reading system is constructed for a plurality of building blocks. Each calorimeter communication module 100 is installed for each room and is connected to the calorimeter 10 of the room, The bridge 300 of each room is arranged for each of the rooms and the calorimeter communication module 100 and the first communication module 310 of each room included in the room form the lower end mesh network 21. [

The second communication module 320 of each of the bridges 300 forms an upper end mesh network 22 using radio frequencies of a predetermined band, And outputs it to the communication unit 210 side.

Here, the bridge 300 installed in the same unit is not normally operated by the first communication module 310 as a BS and has no effect on the mesh network, that is, it receives the collected meter reading data or uploads it to the upper end I do not. The bridge 300 performs an instruction from the device communication unit 210 of the data concentrator 200.

For example, when it is detected that the mesh network is not operating normally, it is necessary to reset all the calorimeter communication modules 100 in the complex. In this case, when the device communication unit 210 of the data concentrator 200 broadcasts a reset command, the second communication modules 320 of the bridge 300 simultaneously receive the reset command and the reset command is rebroadcast through the first communication module 310 do. Then, all of the calorimeter communication modules 100 within the range can be reset almost simultaneously.

FIG. 7 illustrates a data flow when sending a remote reset command in the bridge 300 according to the preferred embodiment of the present invention. Referring to the drawing, when the second communication module 320 of the data concentrator 200 broadcasts a reset command in the form of B2-pkt, the second communication module 320 of the bridge 300 operates as an RS, The first communication module 310 operates as a BS and broadcasts the received command in the form of Bd2-pkt.

In addition, the 900 MHz band communication used in the lower order mesh network 21 has a data transmission rate lower than that of the 2.4 GHz band communication, but is remarkably superior to the 2.4 GHz band communication and is a non-permissive frequency already widely used for wireless telephones and RFID Especially, since the government designated channels for IoT and the allowable output increased to 25mV, it is preferable to use it as an optimal communication means for realizing the remote meter reading which does not require a very high data transmission speed.

When the second communication module 320 of the bridge 300 is not operating as a BS, only one mesh network is formed. Since the meter reading data need only be collected once a day, it is usually sufficient to collect data from the data concentrator 200 through a single mesh network in a polling manner. However, when a certain node enters too many paths in the mesh network and a time delay or a data bottleneck occurs, the bridge 300 forms a two-stage mesh network. In other words, it is possible to efficiently modify the operation method according to the situation as the system is installed and operated. This is the most distinctive function from the conventional standardized N: N mesh network method.

In the above description, the first communication module 310 of the calorimeter communication module 100, the device communication unit 210 or the calorimeter communication module 100 and the bridge 300 according to the preferred embodiment of the present invention operates as a BS, : 1 mesh network, it is possible to form a mesh network of N: M (M < N). N is a structure in which two or more BSs 210 and 310 are connected to N calorimeter communication modules 100. A typical effect of using the plurality of BSs 210 and 310 is M = 2, the effect of increasing the reliability of the communication system can be realized. That is, in the calorimeter communication module 100, when two BSs are registered and the communication with the first BS fails through the mesh network, the communication success rate can be further increased by attempting communication through the second BS .

According to the configuration and function of the calorimeter remote meter-reading system according to the preferred embodiment of the present invention as described above, each calorimeter 10, which is connected to the calorimeter 10 installed for each room, receives calorimetric data measured by the calorimeter 10, The communication module 100 forms the mesh networks 20 using the radio frequency of 900 MHz band and outputs the metering data received through the formed mesh network 20 so that the calorimeter Even when the communication module 100 is installed, it is possible to perform wireless communication and provide sufficient communication distance even when the distance between each room and the management room is long, such as an apartment complex or a building, so that the remote meter reading of the calorimeter 10 has no communication restriction to provide.

The device communication unit 210 of the data concentrator 200 that collects and manages meter reading data output from each calorimeter communication module 100 is connected to each calorimeter communication module 100 through the mesh network 20 1 mesh network between the calorimeter communication module 100 and the device communication unit 210 by operating as a base station (BS) that collects the meter reading data and uploads the meter reading data to the controller 220 as an upper stage, The communication structure is simple and the debugging and the setting items can be easily modified as compared with the case where the communication is performed in the N: N manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge.

10 ... calorimeter 20 ... mesh network
21 ... Lower Mesh Network 22 ... Upper Mesh Network
100 ... calorimeter communication module 200 ... data concentration device
210 ... control unit 220 ... device communication unit
300 ... Bridge 310 ... First communication module
320 ... second communication module 400 ... management terminal

Claims (4)

The mesh network 20 is connected to the calorimeter 10 installed in each room and receives meter reading data measured by the calorimeter 10 and forms a mesh network 20 using radio frequencies of 900 MHz band, A plurality of calorimeter communication modules 100 for outputting the meter reading data received through the plurality of calorimeter communication modules 100; And
A device communicator 210 for receiving meter reading data output from each calorimeter communication module 100 and a controller 220 for collecting and managing the received meter reading data for each room, &Lt; / RTI &
The device communication unit 210 operates as a base station (BS) that is connected to each calorimeter communication module 100 through the mesh network 20 and collects meter reading data and uploads the collected meter reading data to the control unit 220, 100) and the device communication unit (210). &Lt; / RTI &gt;
Receiving the measured data measured by the calorimeter 10 in the signal connection with the calorimeter 10 installed for each room and forming the lower end mesh network 21 using the 900 MHz band radio frequency, A plurality of calorimeter communication modules (100) for outputting the meter reading data received via the network (21);
A first communication module 310 for receiving the meter reading data signally output from the calorimeter communication module 100 through the lower stage mesh network 21 and outputting the meter reading data to the calorimeter communication module 100, A bridge 300 including a second communication module 320 for outputting metering data for each room; And
A device communication unit 210 for receiving the meter reading data for each room output from the second communication module 320 and a control unit 220 for collecting and managing the received meter reading data for each room, 200)
The first communication module 310 is connected to each calorimeter communication module 100 through the lower end mesh network 21 and collects the meter reading data and uploads the collected meter reading data to the second communication module 320. [ 1 mesh network is formed between each calorimetric communication module 100 and the first communication module 310 by operating as an N: 1 mesh network.
The method of claim 2,
Wherein the first communication module (310) is normally inactivated and does not operate as a BS, and is activated when receiving a command signal from the data concentrator (200) to operate as a BS.
The method according to claim 2 or 3,
The calorimeter remote meter reading system is constructed for a plurality of building blocks,
Each calorimeter communication module 100 is installed for each room and is connected to the calorimeter 10 of the room,
The plurality of bridges 300 are arranged for each of the cores so that the calorimeter communication module 100 and the first communication module 310 of each room included in the room form the lower end mesh network 21,
The second communication module 320 of each bridge 300 forms an upper end mesh network 22 with a radio frequency of a predetermined band and transmits the upper end mesh network 22 to a device communication unit 210). &Lt; / RTI &gt;

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