CN108738102A - A kind of intelligence office building temperature and humidity control system - Google Patents
A kind of intelligence office building temperature and humidity control system Download PDFInfo
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- CN108738102A CN108738102A CN201710270438.5A CN201710270438A CN108738102A CN 108738102 A CN108738102 A CN 108738102A CN 201710270438 A CN201710270438 A CN 201710270438A CN 108738102 A CN108738102 A CN 108738102A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of intelligent office building temperature and humidity control system, it includes monitoring host computer, Ethernet switch, Zigbee gateways, cluster head node and temperature and humidity sensing node, 1 Zigbee gateway is disposed per floor, star-network is formed by 1 cluster head node and multiple temperature and humidity sensing nodes, by forming ZigBee mesh networks between cluster head node, the networking structure formed per floor is mixed with star-network by ZigBee mesh networks, ZigBee mesh networks per floor are connected to Zigbee gateways, Zigbee gateways are connected to Ethernet switch by Ethernet and are connected with monitoring host computer.Often there is certain gradient in the present invention, humiture is measured using multiple nodes for humiture in room, according to the humiture situation in the measurement result comprehensive descision room of multiple nodes, starts humidification or removes wet practice.
Description
Technical field
It is specifically a kind of based on wireless sensor network the invention belongs to intelligent building and Internet of Things application field
Intelligent office building temperature and humidity control system, the room humidity for intelligent building control.
Background technology
In meteorological element, maximum to Health Impact is temperature and humidity.Indoor temperature and humidity adjustment can in building
To make the work of people be in optimum state with life, keeps life comfortable and promote health, and reach energy-efficient purpose.
For humidity, when summer indoor humidity is big, inhibits human body evaporative heat loss, make one body-sensing to uncomfortable；Winter humidity
When excessive, heat transfer can be accelerated and make one to feel cold.When indoor humidity is too low, because the moisture of upper respiratory tract mucosa largely scatters and disappears
And feel mouth parched and tongue scorched, and easy catching a cold.In general, the suitable relative humidity upper limit value of human body is no more than 80%, and lower limiting value is not
Less than 30%.
The body-sensing of people is not influenced by one item index merely, but the comprehensive function of both humitures.In medical gas
It is whether suitable to evaluate indoor temperature and humidity that the body-sensing of people is divided into several grades as on.Optimum people is obtained by many experiments
Humiture be：23-28 DEG C of summer temperature, humidity 30%-60%；18-25 DEG C of winter temperature, humidity 30%-80%.In this model
That encloses that interior people are comfortable on accounts for 95% or more.Under normal circumstances, indoor temperature control is at 22 DEG C -26 DEG C, humidity 40%-
50%, human body sensory the most comfortable, and indoor temperature is at 18 DEG C -20 DEG C, when humidity is 40%-60%, the thinking of people is most quick, work
Make efficiency highest.
Wireless sensor network is the major domain that Internet of Things application promotes.Wireless sensor network technology is communication skill
The multi-disciplinary crossing domain such as art, computer technology, micro-electromechanical technology, becomes the hot spot studied both at home and abroad in recent years, and by regarding
For the pillar of Future Information industry.One important feature of wireless sensor network is to have broken away from the line of traditional sensors network
Limitation forms network using communication, has the characteristics that easy for installation, flexible structure.
Invention content
The purpose of the invention is to make up the deficiencies in the prior art, a kind of intelligent office building Temperature and Humidity Control system is provided
System.
To achieve the above object, the present invention uses following technical proposals：
A kind of intelligence office building temperature and humidity control system, it include monitoring host computer, Ethernet switch, Zigbee gateways,
Cluster head node and temperature and humidity sensing node dispose 1 Zigbee gateway per floor, are passed by 1 cluster head node and multiple humitures
Feel node and form star-network, by forming ZigBee mesh networks between cluster head node, by ZigBee mesh networks and radial network
Networking structure of the network mixing composition per floor, the ZigBee mesh networks per floor are connected to Zigbee gateways, Zigbee gateways
It is connected to Ethernet switch by Ethernet and is connected with monitoring host computer；
Cluster head node is deployed in 1 or several rooms, according to the temperature and humidity measurement result of multiple temperature and humidity sensing nodes
Humiture situation in comprehensive descision room provides unified humidity regulation for 1 or several rooms；It is disposed in every 1 room
Multiple temperature and humidity sensing nodes, measure room humiture；
Monitoring host computer receives the status data of each node and monitors the working condition of whole system, and monitoring host computer receives
Data from ZigBee mesh networks, and control command can be sent to Zigbee mesh networks and cluster head node and carry out parameter
Setting.
Further, it further includes humidifying/drying to execute node and distant control function node, humidifies/dry execution node root
The instruction control humidifier or moisture separator sent according to cluster head node executes humidification or dries；Distant control function node is provided to corresponding
Cluster head node sends manual control instruction and setting operating mode and parameter.
Further, monitoring host computer uses the software of C/S architecture designs, is responsible for sending number to server from cluster head node
According to server stores data, shows.
Further, the hardware configuration of temperature and humidity sensing node includes Temperature Humidity Sensor unit, microprocessor processes list
Member, communication unit and power supply unit, wherein Temperature Humidity Sensor use DHT11, using the transmission mode of digital signal, microprocessor
Device processing unit includes CC2530 and its accessory circuit, and communication unit is used between each node and the communication of node and coordinator；
There are one humidity sensing element and temperature elements, DHT11 to connect with microprocessor processes unit and be connect using SPI in DHT11
Mouthful.
Further ,/it includes humidifying to dry and execute the hardware configuration of node/is humidified at the execution unit that dries, microprocessor
Unit, communication unit and power supply unit are managed, is made of with relay humidifier or moisture separator wherein humidifying/drying execution unit,
Relay is used to control the power switch of humidifier or moisture separator.
Further, the hardware configuration of distant control function node includes input/display unit, microprocessor processes unit, leads to
Letter unit and power supply unit, wherein input/display unit are shown that LCD12864 uses serial port drive by LCD12864 display screens
Mode.
Further, belonged to according to the administrative ownership in room or personnel, if the ZigBee mesh networks per floor are divided into
A relatively independent Logic Cluster is done, the humidity in region corresponding to each Logic Cluster carries out unified adjustment；
One and only one cluster head node of each Logic Cluster, cluster head node are responsible for the logic within the scope of ZigBee mesh networks
The broadcast of the foundation and cluster interior nodes dependent routing information of cluster.
Further, ZigBee mesh networks have 16 independent channels in 2.4GHz frequency ranges, on each channel portion
Independent network is affixed one's name to, Z-Stack defines what network equipment acquiescence used by the way that channel list value DEFAULT_CHANLIST is arranged
Channel defined in f8wConfig.cfg files of the channel the default list in Z-Stack file directorys, amounts to 32, and these
Independent network is located at different floors, after being connected to Ethernet switch by Zigbee gateways respectively, is connected to prison
Control host.
Beneficial effects of the present invention：This system preferably solves humiture in room and often there is asking for certain gradient
Topic, measures humiture, finally according to the measurement result of multiple temperature and humidity sensing nodes using multiple temperature and humidity sensing nodes
Humiture situation in comprehensive descision room starts humidification or removes wet practice.In addition, being returned according to the administrative ownership in room or personnel
Belong to, the ZigBee mesh networks of every floor are divided into several relatively independent Logic Clusters.Chummery is not according to different crowd
Requirement to humiture is controlled by corresponding cluster head node, is had the characteristics that more humane.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the intelligent office building temperature and humidity control system of the present invention；
Fig. 2 is mixed the networking structure figure formed by ZigBee mesh networks with star-network；
Fig. 3 is temperature and humidity sensing node hardware structure figure；
Fig. 4 is to humidify/dry to execute node hardware structure figure；
Fig. 5 is distant control function node hardware structure figure.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of intelligent office building temperature and humidity control system of the present invention, by monitoring host computer, Ethernet switch, Zigbee nets
Pass, cluster head node, temperature and humidity sensing node and humidification/drying executes node composition, as shown in Figure 1.The system deployment is in intelligence
In building, 1 Zigbee gateway is disposed per floor, if only 1 layer of building, does not need Ethernet switch, cluster head node
It is deployed in 1 or several rooms, is that this 1 or several rooms provide unified humidity regulation.Temperature and humidity sensing node is completed
Measurement to room humiture, since temperature often has certain gradient in room, and relative humidity is the function of temperature, temperature
Degree severely impacts the relative humidity in designated space.Temperature often changes 0.1 DEG C.The humidity for generating 0.5%RH is changed and is missed
Difference.Therefore, it is measured using multiple temperature and humidity sensing nodes, finally according to the temperature and humidity measurement of multiple temperature and humidity sensing nodes
As a result the humiture situation in comprehensive descision room.When indoor temperature and humidity conditions meet set humiture regularization condition
When, cluster head node sends instruction to humidifying/drying execution node, starts humidifier or moisture separator is humidified or gone wet practice.
Cluster head node behaviour work control model can also be set, manual control can be carried out in such a mode and adjust humidification or dry
Operation.
Per first floor there are one Zigbee gateways, the networking structure per floor is mixed by ZigBee mesh networks with star-network
It is combined into.Every layer of Zigbee gateways are connected to the Ethernet switch of monitoring room by Ethernet and are connected with monitoring host computer.
Monitoring host computer can receive the status data of each node and can monitor the working condition of whole system.
ZigBee mesh networks and star-network mixed networking structural schematic diagram are as shown in Figure 2.In conjunction with mesh network and star
Shape network advantage builds the network of cluster head routing node and terminal device mixing.Figure Oxford gray (in) it is cluster head node, light gray
(small) color is terminal node.According to room concrete condition, need to unify in one or several rooms of adjustment humidity, including a cluster
First node and several terminal nodes form star-network, to solve the gradient problem of temperature and humidity measurement in room.Terminal node is set
It is standby to be route by corresponding cluster head node equipment on behalf of network is executed；Cluster head node equipment and end node devices are constituted similar to starlike
Network；ZigBee mesh networks are constituted between cluster head node, are the backbone networks of the data transmission in network, it is superfluous by providing
Remaining path, it is ensured that data transmission credibility, to improve network robustness.Star-network system response time is very fast, is not required to road
By control information, system-computed and storage resource occupy less, and network complexity is small.Equipment in network node is broadly divided into coordination
Three kinds of device node, cluster head router node and terminal device node device types, Z-Stack are different by being compiled in engineering
Configuration file distinguishes device role.
Different floors uses different channels, and ZigBee has 16 independent channels in 2.4GHz frequency ranges, each
Independent network can be disposed on channel, these networks can exist simultaneously, and can't interfere with each other.Z-Stack is believed by being arranged
Road list value DEFAULT_CHANLIST defines the network equipment and gives tacit consent to the channel used.Channel the default list is in Z-Stack files
Defined in f8wConfig.cfg files in catalogue, amount to 32.It need to be by its corresponding position 1 using a certain channel.These independences
Network be located at different floors, respectively by Zigbee gateways, after being connected to Ethernet switch, be connected to monitoring master
Machine.
Routing Protocol uses the scheme that static address distributes.Source node sends datagram to the destination node in cluster
When, it is forwarded by cluster head node.And when sending datagram to the destination node in other clusters, AODV route discoveries can be used
Mechanism.Its rudimentary algorithm flow is：Source sending node judges that destination node belongs in cluster or outside cluster by cluster mark；If it is
It in cluster, will be forwarded by cluster head node, the network node in cluster does not use routing table, and significantly reducing makes memory space
With；Outside if it is cluster, it will the netted routings of AODV are executed, if there is the next hop address for reaching destination node in routing table,
Next-hop is executed using according to the address in routing table.If the next hop address for arriving at location is not present in routing table,
Start the route discovery based on flooding mechanism.
According to the administrative ownership or personnel's ownership in room, it is opposite that the ZigBee mesh networks of every floor are divided into several
Independent Logic Cluster.Each cluster refers to the node set belonged in logic in ZigBee mesh networks in a region, each
The humidity in region corresponding to cluster carries out unified adjustment.Cluster head node each Logic Cluster one and only one, be whole
The core node of a cluster plays route test and management role in the control range of the cluster.It stores in cluster head node equipment
Associated member's information in this cluster and routing iinformation.Meanwhile cluster head node equally belongs to the cluster of overall network between cluster and cluster again
Interior member.For member's home cluster in one cluster of label, each cluster member needs unique cluster label in a network range.For
Compatible network node AODV routing addressings, cluster are labeled as the network address of cluster head node.Cluster head node is responsible for ZigBee mesh networks
The broadcast of the foundation and cluster interior nodes dependent routing information of Logic Cluster within the scope of network.Common bunch member node and cluster head node group
At stellate reticulum, do not have routing capabilities, by cluster head node on behalf of execution data packet routing function.
Routing procedure includes integrally two aspect content of route requests and route replies, the routing that can be divided into cluster and cluster
Between routing.Routing in cluster refers to that the destination address that data packet is sent is located in the same cluster in network, according to cluster head section
The information about firms of point calculates the next hop address of data packet, it is not necessary to execute route finding process.When the destination node in network
When not in an identical cluster, and there is no the related routing entry of destination address, Routing Protocol in the routing table of node
Then start the Routing Protocol program between cluster, i.e., netted Routing Protocol.Network is gone to according to the netted routings of AODV between ZigBee clusters
Up to the route discovery of destination node, node is according to the dependent routing information transmission data in routing table.
Node is divided into three types from hardware point of view：Temperature and humidity sensing node humidifies/dries execution node, distant control function
Node.Temperature and humidity sensing node completes the measurement to room humiture, since in room often there is certain gradient in temperature, because
This, is measured using multiple temperature and humidity sensing nodes, finally according to the temperature and humidity measurement result of multiple temperature and humidity sensing nodes
Humiture situation in comprehensive descision room.It humidifies/dries and execute node control humidifier or moisture separator execution humidification or dry,
When indoor temperature and humidity conditions meet set humiture regularization condition, humidifies/dry execution node and receive cluster head node
Instruction, starts humidifier or moisture separator is humidified or gone wet practice.Distant control function node provides the remote control work(to cluster head node
Energy.Controller sends control instruction by distant control function node to cluster head node, and operating mode and parameter is arranged；Receive cluster head section
The response of point is simultaneously shown on liquid crystal display.
The hardware configuration of temperature and humidity sensing node is as shown in figure 3, the hardware configuration of cluster head node is also as shown in figure 3, only
It is the device role that Z-Stack compiles that different configuration files distinguishes temperature and humidity sensing node and cluster head node in engineering.Add
Wet/drying executes node hardware structure as shown in figure 4, distant control function node hardware structure is as shown in Figure 5.
Microprocessor processes unit is mainly made of CC2530 and its accessory circuit, between each node of communication unit completion and is saved
The communication function of point and coordinator.Temperature and humidity sensing node medium temperature humidity sensor unit use DHT11, it collect collecting temperature and
For humidity in one, institute's measured data is very reliable, very easy to use, using the transmission mode of digital signal.DHT11 sensors
In there are one humidity sensing element and temperature element, humidity sensing element is the difference of the resistance value in different humidity conducive to resistance to survey
Humidity is measured, temperature element is the temperature probe done using the temperature-sensing element (device) of negative temperature coefficient.DHT11 and microprocessor
Processing unit connection uses SPI interface, the transmission of signal reliable and stable.
Humidifying/dry to execute and be humidified in node/, the execution unit that dries is made of humidifier or moisture separator with relay, relay
Device is used for controlling the power switch of humidifier or moisture separator.Here using the happy SRS-05VDC-SL relays of pine.Work as cluster head
Node calculate find temperature and humidity conditions satisfaction need to execute humidify/when removing wet practice；Or instruction is received, controller artificially requires
When execution is humidified/dried, microprocessor processes unit starting relay connects humidifier or moisture separator, and completion is accordingly humidified/gone
Wet practice.When microprocessor, which receives instruction, to suspend corresponding operating, control relay stopping accordingly humidifying/remove wet practice.
Input/display unit of distant control function node completes display function by LCD12864 display screens.The module has low
The features such as voltage, low-power consumption, operational order are conveniently, interface mode is flexible may be constructed the man-machine graphical interfaces of full Chinese.
LCD12864 can use serial ports and parallel port two ways to communicate, but since the I/O of CC2530 mouth resources are more in short supply, so
We use serial port drive mode.
Since in room often there is certain gradient in temperature, it is measured using multiple temperature and humidity sensing nodes,
Finally according to the humiture situation in the temperature and humidity measurement result comprehensive descision room of multiple temperature and humidity sensing nodes, use at present
Be temperature averages and humidity average value that cluster head node seeks each temperature and humidity sensing node, then in temperature averages institute
Corresponding humidity threshold bound is compared, if not in claimed range, cluster head node transmission instructs startup to humidify/go
Wet execution node is humidified or is gone wet practice.Humidity threshold is manually to send to instruct to cluster head node by distant control function node
It is arranged.
Zigbee gateways connect two mutually independent networks of Zigbee mesh networks and Ethernet.All node datas are equal
It is sent to gateway, and by it into row address, protocol conversion, extracts after effective information data seal and change into TCP/IP data packets again
It is sent to Ethernet；Conversely, Ethernet data also it is netted need to be just sent to Zigbee by gateway into after row address, protocol conversion
Network；Embedded gateway is the terminal that Ethernet data is exchanged with Zigbee wireless network datas.Monitoring host computer can be supervised remotely
The working condition of control system, monitoring host computer receive the data from ZigBee mesh networks, and can to Zigbee mesh networks and
Cluster head node sends control command and carries out parameter setting.Monitoring host computer software is designed using C/S frameworks, is by client
ZigBee cluster head nodes are responsible for server transmission data, and server stores data, shows.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of intelligence office building temperature and humidity control system, it is characterised in that：It include monitoring host computer, Ethernet switch,
Zigbee gateways, cluster head node and temperature and humidity sensing node dispose 1 Zigbee gateway per floor, by 1 cluster head node and more
A temperature and humidity sensing node forms star-network, by forming ZigBee mesh networks between cluster head node, by ZigBee mesh networks
Network mixes networking structure of the composition per floor with star-network, and the ZigBee mesh networks per floor are connected to Zigbee gateways,
Zigbee gateways are connected to Ethernet switch by Ethernet and are connected with monitoring host computer；
The cluster head node is deployed in 1 or several rooms, according to the temperature and humidity measurement result of multiple temperature and humidity sensing nodes
Humiture situation in comprehensive descision room provides unified humidity regulation for 1 or several rooms；It is disposed in every 1 room
Multiple temperature and humidity sensing nodes, measure room humiture；
The monitoring host computer receives the status data of each node and monitors the working condition of whole system, and monitoring host computer receives
Data from ZigBee mesh networks, and control command can be sent to Zigbee mesh networks and cluster head node and carry out parameter
Setting.
2. a kind of intelligent office building temperature and humidity control system according to claim 1, it is characterised in that：It further includes adding
Wet/drying executes node and distant control function node, it humidifies/dries execution node and humidification is controlled according to the instruction that cluster head node is sent
Device or moisture separator execute humidification or dry；Distant control function node provide to corresponding cluster head node send manual control instruction and
Operating mode and parameter are set.
3. a kind of intelligent office building temperature and humidity control system according to claim 1, it is characterised in that：The monitoring host computer
Using the software of C/S architecture designs, it is responsible for from cluster head node to server transmission data, server stores data, shows
Show.
4. a kind of intelligent office building temperature and humidity control system according to claim 1, it is characterised in that：The humiture passes
The hardware configuration of sense node includes Temperature Humidity Sensor unit, microprocessor processes unit, communication unit and power supply unit, wherein
Temperature Humidity Sensor uses DHT11, and using the transmission mode of digital signal, microprocessor processes unit includes CC2530 and its attached
Belong to circuit, communication unit is used between each node and the communication of node and coordinator；
There are one humidity sensing element and temperature elements, DHT11 to connect with microprocessor processes unit and be connect using SPI in the DHT11
Mouthful.
5. a kind of intelligent office building temperature and humidity control system according to claim 2, it is characterised in that：It is described to humidify/go
The wet hardware configuration for executing node includes humidifying/drying execution unit, microprocessor processes unit, communication unit and power supply list
Member is made of humidifier or moisture separator with relay wherein humidifying/drying execution unit, and relay is for controlling humidifier or going
The power switch of wet device.
6. a kind of intelligent office building temperature and humidity control system according to claim 2, it is characterised in that：The distant control function
The hardware configuration of node includes input/display unit, microprocessor processes unit, communication unit and power supply unit, wherein input/
Display unit is shown that LCD12864 uses serial port drive mode by LCD12864 display screens.
7. a kind of intelligent office building temperature and humidity control system according to claim 1, it is characterised in that：According to the row in room
Political affairs ownership or personnel's ownership, the ZigBee mesh networks per floor are divided into several relatively independent Logic Clusters, each
The humidity in region corresponding to Logic Cluster carries out unified adjustment；
One and only one cluster head node of each Logic Cluster, cluster head node are responsible for the logic within the scope of ZigBee mesh networks
The broadcast of the foundation and cluster interior nodes dependent routing information of cluster.
8. a kind of intelligent office building temperature and humidity control system according to claim 1, it is characterised in that：The ZigBee nets
Shape network has 16 independent channels in 2.4GHz frequency ranges, disposes independent network on each channel, Z-Stack is by setting
Confidence road list value DEFAULT_CHANLIST defines the network equipment and gives tacit consent to the channel used, and channel the default list is in Z-Stack
Defined in f8wConfig.cfg files in file directory, amount to 32, and these independent networks are located at different buildings
Layer, after being connected to Ethernet switch by Zigbee gateways respectively, is connected to monitoring host computer.
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Application publication date: 20181102 |