CN211184255U

CN211184255U - Building monitoring system based on bluetooth mesh network

Info

Publication number: CN211184255U
Application number: CN202020006542.0U
Authority: CN
Inventors: 周达
Original assignee: China IPPR International Engineering Co Ltd
Current assignee: China IPPR International Engineering Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-08-04
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a building monitoring system based on bluetooth mesh network, monitoring system includes: a sensor for sensing environmental data; an intelligent terminal device; and the Bluetooth mesh network has a many-to-many topological structure, and comprises a plurality of nodes, wherein the nodes are used for acquiring environmental data sensed by the sensor and transmitting data among the nodes and between the nodes and the intelligent terminal equipment. The method has the advantages of saving a large amount of wiring cost, preventing communication from being interrupted by external force, easily expanding a system, not influencing the attractive appearance of a building body and the like. The method is particularly suitable for projects which are inconvenient for building electromechanical construction, reconstruction projects, projects with tense construction period requirements and projects with higher aesthetic requirements for the interior of the building.

Description

Building monitoring system based on bluetooth mesh network

Technical Field

The utility model relates to a building monitoring field especially indicates a building monitoring system based on bluetooth mesh network.

Background

Along with the improvement of living standard of people, people pay more and more attention to the comfort and safety problem of residential environment. With the development of technology, there is a scheme for monitoring the surrounding environment of a building by establishing a building automation monitoring system. Building automation systems, also known as equipment control systems, are used for monitoring and controlling the operation and energy saving of building equipment within a building or building complex. The building automation system carries out comprehensive automatic monitoring and management on various devices of the building, so that the whole system and various devices in the system are in the optimal working state, and finally, safe, comfortable, convenient and efficient working and living environments are provided for owners and clients.

In most building monitoring systems at present, a bus communication mode is adopted for transmitting sensor data. The sensor uploads the acquired data to a DDC (direct digital controller) through an RS485 bus and then to a central control device of the building monitoring system through the Ethernet.

However, the above conventional technical system is mainly applied in the building monitoring field, and has the following problems: a significant amount of cable cost is incurred; the breakage of the cable can affect the data transmission between the sensor and the controller; the communication mode of the bus is not favorable for the capacity expansion and the reconstruction of the system, and the like.

There is therefore a need for new techniques to at least partially address the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a building monitoring system based on bluetooth mesh network, building monitoring system includes:

a sensor for sensing environmental data;

the Bluetooth mesh network has a many-to-many topological structure and comprises a plurality of nodes, wherein the nodes are used for acquiring environmental data sensed by the sensors and transmitting data among the nodes and between the nodes and intelligent terminal equipment; and

and the intelligent terminal equipment is used for receiving and processing the data of the Bluetooth mesh network.

Preferably, the environmental data includes data of temperature and humidity, air pressure, carbon dioxide concentration, volatile organic gas concentration, light intensity, color temperature, 9-axis motion perception, wind speed, liquid level, water flow, electromechanical device start-stop state and fault state.

Preferably, the node also includes a PCA10056 control board, the bluetooth module of which is based on nRF52840 chip.

Preferably, the node comprises a Thingy: and (52) a control board, wherein a Bluetooth module of the control board is based on an nRF52832 chip.

Preferably, the nodes include a relay node and a proxy node, the relay node undertakes data transfer between the nodes, and the proxy node undertakes data transfer between the bluetooth mesh network and the intelligent terminal device.

Preferably, the building monitoring system further comprises a cloud platform, and the intelligent terminal device can perform data interaction with the cloud platform.

Preferably, the communication mode for the control panel to collect data comprises RS485 bus and I²C-bus, SPI-bus and monobus.

Preferably, the intelligent terminal device is selected from a smart phone, a computer, a pad and the like.

The utility model discloses a building monitoring system adopts bluetooth low-power consumption mesh network, has need not the wiring, advantages such as transmission reliability is high, low-power consumption, commonality are good, friendly to the transformation project.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic diagram of a building monitoring system architecture based on a bluetooth mesh network according to an embodiment of the present invention;

fig. 2 shows a Thingy section in a building monitoring system according to an embodiment of the present invention: 52 schematic view of the working principle;

fig. 3 is a schematic diagram of the operating principle of the PCA10056 control panel in the building monitoring system according to an embodiment of the present invention;

fig. 4 is a schematic view of a node work flow in a building monitoring system according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is made with reference to the accompanying fig. 1-3 and the specific embodiments, but not to limit the scope of the claims attached to the present application.

The embodiment of the utility model provides a building monitoring system based on bluetooth mesh network, as shown in fig. 1-3, the building monitoring system of the utility model can include the sensor used for sensing the environmental data; an intelligent terminal device; and the Bluetooth mesh network has a many-to-many topological structure, and comprises a plurality of nodes, wherein the nodes are used for acquiring environmental data sensed by the sensor and transmitting data among the nodes and between the nodes and the intelligent terminal equipment.

The sensors for environmental data may include a variety of sensors for example, sensors for sensing temperature and humidity, air pressure, carbon dioxide concentration, volatile organic gas concentration, light intensity, color temperature, 9-axis motion sensing, wind speed, liquid level. These sensors are well known in the art and are not described in detail herein.

In this example, a combination of two approaches to collecting environmental data was used, namely, one was a method using nordics eminductor: the kit 52, which integrates various sensors, can collect various data: humiture, atmospheric pressure, carbon dioxide and volatile organic gas concentration, light intensity and colour temperature, 9 axle motion perceptions etc to it still integrates other modules itself, for example bluetooth low energy module (see figure 2), can carry out the transmission of data. Secondly, after environmental data is collected by using a sensor, the data is sent to a control board, that is, transmitted to a PCA10056 control board (see fig. 3), and the sensor at this time may be, for example, a sensor for detecting the environmental data, or other types of sensors, such as a wind speed sensor and a liquid level sensor. The sensor can be a sensor which is arranged independently, or can be a sensor which is already arranged in the existing building electromechanical equipment, such as a sensor for monitoring water flow, the starting and stopping states of the electromechanical equipment, a fault state and the like.

Wireless network mainly is used for transmitting data, the utility model discloses a bluetooth mesh network of low-power consumption. Each device connected to the mesh network may act as a node. Two types of node devices may be included in this embodiment: PCA10056 control board (whose bluetooth module is based on nRF52840 chip) and the aforementioned Thingy: 52 (its bluetooth module is based on nRF52832 chip). For common environmental data that needs to be detected (the type of environmental data that can be collected by Thingy: 52, as described above), Thingy can be used directly: 52, for some Thingy: 52, if the conditions of wind speed, liquid level and the like need to be monitored, a PCA10056 control panel is adopted for data acquisition.

Referring to fig. 3, the PCA10056 control board has a plurality of communication modes, and the common communication modes for collecting data by the sensor include: RS584 bus, I²C bus, SPI bus, monobus. The analog sensor can acquire through GPIO on the control panel and convert analog quantity signals into digital signals through an analog-to-digital converter carried by the chip. This scheme adopts the control panel to collect sensor data, and the low-power consumption bluetooth mesh network of rethread is with data upload to the high in the clouds. Wherein, the control panel can collect the data of the sensor by various modes, such as I²C. Serial communication modes such as SPI, single bus and the like can also adopt a mode that a control panel directly acquires analog signals of the sensors and then performs analog-digital conversion. Therefore, the scheme can flexibly collect data of various sensors without being limited to a single sensor product, and has better application value to actual engineering.

In a bluetooth mesh network, each node can assume a number of different roles, such as: the ordinary node, the relay node (transmitting data between nodes), and the proxy node (responsible for data transmission between the mesh network and the external device) may be set by a software configuration method according to needs, for example, a part of the PCA10056 control board may be set as the proxy node, and a part of the Thingy: 52 are provided as relay nodes, as will be readily understood by those skilled in the art, and are not described in detail herein.

The intelligent terminal device such as a mobile phone, a pad and the like can perform data interaction and processing with the proxy node in the mesh network, and can upload data to the cloud platform through WiFi or Ethernet and the like, so as to realize monitoring and further processing and the like on the cloud platform.

The node work flow of the present invention is explained with reference to fig. 4 as follows: after initialization, the control board enters the main function loop while beginning to loop through the sensors and begin broadcasting, waiting to be configured by the handset. When receiving the configuration request sent by the mobile phone, the configuration is started. And continuing to enter a broadcast state after the configuration is finished, and waiting for an interrupt from the protocol stack. The dashboard may be configured as both a server (providing data) and a client (sending requests). When the protocol stack sends out an interrupt, a pre-configured interrupt processing function is entered. And after the interrupt processing is finished, continuing entering a broadcast mode and waiting for the interrupt.

The utility model discloses following beneficial effect has:

1. after the control panel collects the data of the sensor, the data are transmitted to the mobile intelligent device or other development boards in a communication mode of low-power-consumption Bluetooth mesh networking, so that communication cables do not need to be arranged between the control panels. The following advantages can thereby be achieved:

the system can not cause physical damage to the building body when being laid, so that the site is more beautiful.

It is only necessary to fix the system equipment in a suitable position (the equipment is small and therefore flexible in arrangement). Because only a few equipment installation works are needed, the expenses of the maloperation and the like caused by the construction can not be generated for the reconstruction project and the like which are still used on site.

2. The system comprises the following steps:

a. because the wireless communication mode is adopted, the possibility of communication interruption caused by physical factors such as cable breakage, interface loosening and the like is reduced.

b. By adopting mesh networking, namely a many-to-many networking mode, even if some nodes in the network have faults, data can be transmitted through other node equipment. Therefore, compared with the traditional bus network architecture, the bus network architecture has better stability.

3. Flexibility:

a. conventional bus-based building control systems typically have a limit on the number of devices, and typically a maximum of 128 devices are connected to a bus. The number of hosts needs to be increased if more devices need to be connected. The low power consumption bluetooth mesh network can support 32767 devices for networking, so that devices can be added conveniently if the system needs to be expanded.

b. The control board can collect the data of the sensor in various ways, such as I²C. Serial communication modes such as SPI, single bus and the like can also adopt a mode that a control panel directly acquires analog signals of the sensors and then performs analog-digital conversion. Therefore, the scheme can flexibly collect data of various sensors without being limited to a single sensor product, and has better application value to actual engineering.

c. Because the system does not need wiring and supports as many as 32767 devices to access the network, cable routes, the number of hosts and the like are not required to be planned in the early stage of design, and the design and installation of a building control system can be carried out in the later stage of a project, so that the design and construction process are more flexible, and the project period can be shortened.

d. Because the equipment configured as the proxy node in the mesh network can communicate with the intelligent mobile equipment through the traditional Bluetooth communication, the data access can be conveniently carried out through the direct connection of the mobile phone, the pad and other terminal equipment to the node, and the personnel can conveniently check and overhaul the node on site.

4. The economic efficiency is as follows:

a. because no wiring is needed, a large amount of material cost of cables, bridges and the like and corresponding construction labor cost can be saved.

b. The low-power-consumption Bluetooth communication has the characteristic of extremely low power consumption, is relatively environment-friendly and economical, and is suitable for application scenes particularly sensitive to power consumption.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A building monitoring system based on a Bluetooth mesh network, the building monitoring system comprising:

a sensor for sensing environmental data;

and the intelligent terminal equipment is used for receiving and processing the data from the Bluetooth mesh network.

2. The building monitoring system of claim 1, wherein the environmental data is selected from the group consisting of temperature and humidity, air pressure, carbon dioxide concentration, volatile organic gas concentration, light intensity, color temperature, 9-axis motion perception, wind speed, liquid level, water flow, electromechanical device start-stop status, and fault status data.

3. The building monitoring system of claim 1, wherein the node comprises a PCA10056 control board whose bluetooth module is nRF52840 chip based.

4. The building monitoring system of claim 1, wherein the nodes include a Thingy: kit 52, the bluetooth module of which is based on nRF52832 chip.

5. The building monitoring system of claim 1, wherein the nodes include a relay node that handles data transfer between nodes and a proxy node that handles data transfer between a bluetooth mesh network and a smart terminal device.

6. The building monitoring system of claim 1, further comprising a cloud platform, the intelligent terminal device capable of data interaction with the cloud platform.

7. The building monitoring system as claimed in claim 3, wherein the communication mode for the control panel to collect data includes RS485 bus, I²C-bus, SPI-bus and monobus.

8. The building monitoring system of claim 1, wherein the smart end device is selected from a smart phone, a computer, and a pad.