CN106817438A - A kind of device management method and device based on controller local area network - Google Patents
A kind of device management method and device based on controller local area network Download PDFInfo
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- CN106817438A CN106817438A CN201710072259.0A CN201710072259A CN106817438A CN 106817438 A CN106817438 A CN 106817438A CN 201710072259 A CN201710072259 A CN 201710072259A CN 106817438 A CN106817438 A CN 106817438A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/627—Controller area network [CAN] identifiers
Abstract
The application provides device management method and device based on controller local area network, and methods described includes：After receiving the DHCP Discover messages of device node broadcast of controller local area network, an available ID is distributed according to the random number, and broadcast DHCP Offer messages；A distributed ID is carried in the DHCP Offer messages；After receiving the DHCP Request messages of device node broadcast of controller local area network, judge whether the 2nd ID in the message is consistent with the ID for being distributed before；In the case that an ID that the 2nd ID in DHCP Request messages was distributed with before is consistent, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, the 3rd ID determined by being carried in the DHCP Ack messages.Using the embodiment of the present application, it is possible to achieve automatically distribute the ID of access device, so as to improve the efficiency of distribution ID, reduce the cost of distribution ID.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of device management method based on controller local area network and
Device.
Background technology
With continuing to develop for technology, for example various sensors of equipment of terminal are more and more, even future device
Quantity may be considerably beyond the quantity of the mankind.In order to tackle so many equipment connection communication, technology of Internet of things arises at the historic moment.
In Internet of Things based on CAN (controller local area network) mode connection communication, for the ease of the equipment that management is accessed,
CAN master controllers need to distribute ID to the equipment for accessing.
In the prior art, it is in itself a simple general protocol framework due to CAN, the function of ID is not distributed,
So what the work of distribution ID was generally manually carried out.However, manual allocation ID is often less efficient, and cost of labor
It is higher.
The content of the invention
The application provides device management method and device based on controller local area network, is used to solve people in the prior art
Work point is with ID less efficient, relatively costly problem.
According to a kind of device management method based on controller local area network that the embodiment of the present application is provided, methods described bag
Include：
The device node broadcast DHCP Discover messages of controller local area network；Wherein, the DHCP Discover
A random number is carried in message, the random number is used as temporary mark and sends device address, the association of controller local area network
View has pre-defined DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
The master controller of controller local area network distributes one after receiving DHCP Discover messages according to the random number
An individual available ID, and broadcast DHCP Offer messages；A distributed ID is carried in the DHCP Offer messages；
The device node of controller local area network receives the DHCP that the master controller of controller local area network is returned
After Offer messages, the ID in the message is defined as the 2nd ID, and broadcast DHCP Request messages；Wherein, it is described
DHCP Request messages carry the 2nd ID；
The master controller of controller local area network receives the 2nd ID judged in the message after DHCP Request messages
It is whether consistent with the ID for being distributed before；
Twoth ID of the master controller of controller local area network in DHCP Request messages distributed with before the
In the case that one ID is consistent, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, the DHCP
3rd ID determined by being carried in Ack messages；
The device node of controller local area network receives the DHCP Ack that the master controller of controller local area network is returned
After message, judge whether the 3rd ID in the message is consistent with the 2nd ID；
Feelings threeth ID of the device node of controller local area network in DHCP Ack messages consistent with the 2nd ID
Under condition, final ID is defined as by described 3rd No. ID.
Optionally, the data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
Optionally, the ID of the distribution is located between 4 to 240.
According to a kind of device management method based on controller local area network that the embodiment of the present application is provided, methods described should
Used in the device node of the controller local area network, methods described includes：
Broadcast DHCP Discover messages；Wherein, a random number is carried in the DHCP Discover messages, it is described
Random number be used as temporary mark send device address, controller local area network's agreement pre-defined DHCP Discover,
DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
After the DHCP Offer messages that the master controller for receiving controller local area network is returned, by the in the message
One ID is defined as the 2nd ID, and broadcasts DHCP Request messages；Wherein, the DHCP Request messages carry described second
ID；
After the DHCP Ack messages that the master controller for receiving controller local area network is returned, the in the message is judged
Whether three ID are consistent with the 2nd ID；
In the case that the 3rd ID in DHCP Ack messages is consistent with the 2nd ID, described 3rd No. ID is defined as
Final ID.
Optionally, in the case that the 3rd ID in DHCP Ack messages is consistent with the 2nd ID, by the 3rd ID
Number it is defined as after final ID, methods described also includes：
The final ID is preserved in memory；
Correspondingly,
Before the broadcast DHCP Discover messages, methods described also includes：
Judge whether the ID for preserving is effective；
In the case where the ID for preserving is invalid, the broadcast DHCP Discover messages are performed；
In the case of the ID for preserving is effective, the already present ID is defined as the 2nd ID, performs the broadcast DHCP
Request messages.
Optionally, the data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
According to a kind of device management method based on controller local area network that the embodiment of the present application is provided, methods described should
Used in the master controller of the controller local area network, methods described includes：
After receiving the DHCP Discover messages of device node broadcast of controller local area network, according to described random
Number one available ID of distribution, and broadcast DHCP Offer messages；Carry what is distributed in the DHCP Offer messages
First ID；
After receiving the DHCP Request messages of device node broadcast of controller local area network, in judging the message
Whether the 2nd ID is consistent with the ID for being distributed before；
In the case that an ID that the 2nd ID in DHCP Request messages was distributed with before is consistent, by described
Two ID are defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, the 3rd determined by being carried in the DHCP Ack messages
ID。
Optionally, the data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
Optionally, the ID of the distribution is located between 4 to 240.
According to a kind of equipment management device based on controller local area network that the embodiment of the present application is provided, described device should
Used in the device node of the controller local area network, described device includes：
First radio unit, for broadcasting DHCP Discover messages；Wherein, taken in the DHCP Discover messages
One random number of band, the random number is used as temporary mark and sends device address, and controller local area network's agreement is fixed in advance
Justice DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
Second radio unit, for the DHCP Offer messages returned in the master controller for receiving controller local area network
Afterwards, the ID in the message is defined as the 2nd ID, and broadcasts DHCP Request messages；Wherein, the DHCP
Request messages carry the 2nd ID；
Judging unit, for after the DHCP Ack messages of master controller return for receiving controller local area network, sentencing
Whether the 3rd ID in the disconnected message is consistent with the 2nd ID；
Determining unit, for the 3rd ID in DHCP Ack messages it is consistent with the 2nd ID in the case of, will be described
3rd No. ID is defined as final ID.
Optionally, after the determining unit, described device also includes：
Storing sub-units, for the final ID to be preserved in memory；
Correspondingly,
Before first radio unit, described device also includes：
Whether judgment sub-unit, the ID for judging to preserve is effective；
First radio unit, is additionally operable to, in the case where the ID for preserving is invalid, broadcast DHCP Discover messages；
Second radio unit, is additionally operable in the case of the ID for preserving is effective, and the ID in the message is determined
It is the 2nd ID, and broadcasts DHCP Request messages.
According to a kind of equipment management device based on controller local area network that the embodiment of the present application is provided, described device should
With on the master controller of the controller local area network, described device includes：
Allocation unit, after the DHCP Discover messages that the device node for receiving controller local area network is broadcasted,
An available ID is distributed according to the random number；
3rd radio unit, for broadcasting DHCP Offer messages；Carry what is distributed in the DHCP Offer messages
First ID；
Judging unit, after the DHCP Request messages that the device node for receiving controller local area network is broadcasted,
Judge whether the 2nd ID in the message is consistent with the ID for being distributed before；
4th radio unit, the consistent feelings of an ID that the 2nd ID in DHCP Request messages was distributed with before
Under condition, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, carried in the DHCP Ack messages
Identified 3rd ID.
Optionally, the ID of the distribution is located between 4 to 240.
The embodiment of the present application, has used for reference DHCP and has entered network packet, and DHCP has been pre-defined in controller local area network's agreement
Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages.In this way, controller local area network
Device node can realize that DHCP message is interacted with master controller, i.e., it is similar to enter network packet with DHCP, and device node can be with
Broadcast carries the DHCP Discover messages of random number；Master controller can distribute one available the according to the random number
One ID, and gone out by DHCP Offer message broadcastings；Device node is received an ID after DHCP Offer messages
After as the 2nd ID, gone out by DHCP Request message broadcastings；Master controller is consistent with an ID in the 2nd ID
In the case of, the 2nd ID is gone out as the 3rd ID and by DHCP Ack message broadcastings；End-use device node is judging
State the 3rd ID it is consistent with the 2nd ID in the case of, the 3rd ID is defined as final ID.So, controller local is realized
Network automatically to the equipment distribution ID for accessing can realize the efficiency for improving distribution ID, and due to without manual allocation
ID, correspondingly also reduces operation cost.
Brief description of the drawings
Fig. 1 is the flow chart of the device management method based on controller local area network that the embodiment of the application one is provided；
Fig. 2 is the DHCP Discover message format schematic diagrames that the embodiment of the application one is provided；
Fig. 3 is the DHCP Offer message format schematic diagrames that the embodiment of the application one is provided；
Fig. 4 is the DHCP Request message format schematic diagrames that the embodiment of the application one is provided；
Fig. 5 is the DHCP Ack message format schematic diagrames that the embodiment of the application one is provided；
Fig. 6 is the DHCP NAck message format schematic diagrames that the embodiment of the application one is provided；
Fig. 7 is the flow chart of the device management method based on controller local area network that the embodiment of the application one is provided；
Fig. 8 is the flow chart of the device management method based on controller local area network that the embodiment of the application one is provided；
Fig. 9 is a kind of hardware knot of equipment where the equipment management device based on controller local area network that the application is provided
Composition；
Figure 10 is that the module of the equipment management device based on controller local area network that the embodiment of the application one is provided is illustrated
Figure；
Figure 11 is that the module of the equipment management device based on controller local area network that the embodiment of the application one is provided is illustrated
Figure.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in implementation method do not represent all implementation methods consistent with the application.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the application.
It is the purpose only merely for description specific embodiment in term used in this application, and is not intended to be limiting the application.
" one kind ", " described " and " being somebody's turn to do " of singulative used in the application and appended claims is also intended to include majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wraps
May be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for being distinguished from each other open same type of information.For example, not departing from
In the case of the application scope, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
In correlation technique, controller local area network is CAN, is a kind of traditional wired connection mode, for realizing
Simple physical connection between each equipment., it is necessary to the equipment to accessing distributes ID during based on CAN mode connection communications.ID with
It is one-to-one relation between equipment.Corresponding equipment can quickly be found by ID, what so convenient management was accessed sets
It is standby.However, do not distribute the function of ID in itself due to CAN, so what the work of distribution ID was generally manually carried out.So
And, manual allocation ID is often less efficient, particularly in the case where complete set of equipments is accessed, mistake easily occurs, and manually
Operation cost is also higher caused by cost.
In order to solve the above problems, Fig. 1 is referred to, for one kind that the embodiment of the application one is provided is based on controller LAN
The flow chart of the device management method of network, the embodiment is entered this both sides from the master controller and device node of controller local area network
Row description, comprises the following steps：
Step 110：The device node broadcast DHCP Discover messages of controller local area network；Wherein, the DHCP
A random number is carried in Discover messages, the random number is used as temporary mark and sends device address, the control general ability
Domain procotol has pre-defined DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck
Message.
In the present embodiment, in controller local area network agreement CAN, with an Extended ID for 29bit (position).
Controller local area network's agreement has pre-defined DHCP Discover, DHCP Offer, DHCP
Request, DHCP Ack and DHCP NAck messages.That is, DHCP Discover, DHCP have been redefined in the Extended ID
Offer, DHCP Request, DHCP Ack and DHCP NAck messages this five kinds of type of messages.
Five kinds of DHCP messages of the definition are discussed in detail as follows：
As shown in Fig. 2 a kind of DHCP Discover message format schematic diagrames provided for the embodiment of the present application.In Fig. 2,
Using the 29bit information of former Extended ID, DHCP Discover are broadcasted, wherein,
0-4bit is used to represent the framing sequence of message；It is 1111 in this example；
5bit is used to represent the last frame of message；It is 0 in this example；
6-13bit is used to represent the source address of message；It is 11111111 in this example；
14-21bit is used to represent the destination address of message；It is 00000001 in this example；
22bit is used to represent that message is request message or response message that 1 to represent request message, and 0 represents response report
Text；For 1, i.e. DHCP Discover messages are request message in this example；
23-26bit is used to represent that message retains；It is 0101 in this example；
27-28bit is used to represent priority；It is 00 in this example；
Data (data field), with 3byte (byte), for representing type of message and random number.Wherein, the random number
2 bytes are occupied, so type of message occupies 1 byte；For 0x01+0x0004, i.e. type of message are 1 in this example, at random
Number is 4.
It should be noted that because the type of message has only taken up 1 byte, so during data area definition type of message,
Discover is represented by 1,2 represent Offer, and 3 represent Request, and 4 represent Ack, and 5 represent NAck.
It should be noted that the random number is 2 bytes, as a temporary mark, corresponding to device address, and it is used for
Application ID.
As shown in figure 3, a kind of DHCP Offer message format schematic diagrames provided for the embodiment of the present application.In Fig. 3, utilize
The 29bit information of former Extended ID, in the DHCP Offer,
0-4bit is used to represent the framing sequence of message；It is 1111 in this example；
5bit is used to represent the last frame of message；It is 0 in this example；
6-13bit is used to represent the source address of message；It is 00000001 in this example；
14-21bit is used to represent the destination address of message；It is 11111111 in this example；
22bit is used to represent that message is request message or response message that 1 to represent request message, and 0 represents response report
Text；For 0, i.e. DHCP Offer messages are response message in this example；
23-26bit is used to represent that message retains；It is 0101 in this example；
27-28bit is used to represent priority；It is 00 in this example；
Data (data field), with 4byte (byte), for representing type of message, random number and an ID.Wherein, institute
State type of message and occupy 1 byte, the random number occupies 2 bytes, and an ID occupies 1 byte.It is in this example
0x02+0x0004+0x05, i.e. type of message are 2, and random number is 4, and an ID is 5.
It should be noted that because the type of message has only taken up 1 byte, so during data area definition type of message,
Discover is represented by 1,2 represent Offer, and 3 represent Request, and 4 represent Ack, and 5 represent NAck.
It should be noted that the random number is 2 bytes, random number and DHCP in DHCP Offer messages
Random number in Discover messages is same.
As shown in figure 4, a kind of DHCP Request message format schematic diagrames provided for the embodiment of the present application.In Fig. 4, profit
With the 29bit information of former Extended ID, DHCP Request are broadcasted, wherein,
0-4bit is used to represent the framing sequence of message；It is 1111 in this example；
5bit is used to represent the last frame of message；It is 0 in this example；
6-13bit is used to represent the source address of message；It is 11111111 in this example；
14-21bit is used to represent the destination address of message；It is 00000001 in this example；
22bit is used to represent that message is request message or response message that 1 to represent request message, and 0 represents response report
Text；For 1, i.e. DHCP Request messages are request message in this example；
23-26bit is used to represent that message retains；It is 0101 in this example；
27-28bit is used to represent priority；It is 00 in this example；
Data (data field), with 2byte (byte), for representing type of message and the 2nd ID.Wherein, the message class
Type occupies 1 byte, and the 2nd ID occupies 1 byte.For 0x03+0x05, i.e. type of message are 3, the 2nd ID in this example
It is 5.
It should be noted that because the type of message has only taken up 1 byte, so during data area definition type of message,
Discover is represented by 1,2 represent Offer, and 3 represent Request, and 4 represent Ack, and 5 represent NAck.
As shown in figure 5, a kind of DHCP Ack message format schematic diagrames provided for the embodiment of the present application.In Fig. 5, using original
The 29bit information of Extended ID, in the DHCP Ack,
0-4bit is used to represent the framing sequence of message；It is 1111 in this example；
5bit is used to represent the last frame of message；It is 0 in this example；
6-13bit is used to represent the source address of message；It is 00000001 in this example；
14-21bit is used to represent the destination address of message；It is 11111111 in this example；
22bit is used to represent that message is request message or response message that 1 to represent request message, and 0 represents response report
Text；For 0, i.e. DHCP Ack messages are response message in this example；
23-26bit is used to represent that message retains；It is 0101 in this example；
27-28bit is used to represent priority；It is 00 in this example；
Data (data field), with 2byte (byte), for representing type of message and the 3rd ID.Wherein, the message class
Type occupies 1 byte, and the 3rd ID occupies 1 byte.For 0x04+0x05, i.e. type of message are 4, the 3rd ID in this example
It is 5.
It should be noted that because the type of message has only taken up 1 byte, so during data area definition type of message,
Discover is represented by 1,2 represent Offer, and 3 represent Request, and 4 represent Ack, and 5 represent NAck.
As shown in fig. 6, a kind of DHCP NAck message format schematic diagrames provided for the embodiment of the present application.In Fig. 6, utilize
The 29bit information of former Extended ID, in the DHCP NAck,
0-4bit is used to represent the framing sequence of message；It is 1111 in this example；
5bit is used to represent the last frame of message；It is 0 in this example；
6-13bit is used to represent the source address of message；It is 00000001 in this example；
14-21bit is used to represent the destination address of message；It is 11111111 in this example；
22bit is used to represent that message is request message or response message that 1 to represent request message, and 0 represents response report
Text；For 0, i.e. DHCP NAck messages are response message in this example；
23-26bit is used to represent that message retains；It is 0101 in this example；
27-28bit is used to represent priority；It is 00 in this example；
Data (data field), with 2byte (byte), for representing type of message and the 4th ID.Wherein, the message class
Type occupies 1 byte, and the source address occupies 1 byte.For 0x05+0x00, i.e. type of message are 5, the 4th ID in this example
It is 0.
It should be noted that because the type of message has only taken up 1 byte, so during data area definition type of message,
Discover is represented by 1,2 represent Offer, and 3 represent Request, and 4 represent Ack, and 5 represent NAck.4th ID enters later
Row explanation.
Because above-mentioned CAN protocol has pre-defined DHCP message, so the device node of controller local area network can be wide
DHCP Discover messages are broadcast, and a random number is carried in the message.The random number is used as temporary mark and sends equipment
Address.It is noted that the device address has uniqueness, i.e., each equipment has a unique device address.
Step 120：The master controller of controller local area network is received after DHCP Discover messages according to described random
Number one available ID of distribution, and broadcast DHCP Offer messages；Carry what is distributed in the DHCP Offer messages
First ID.
In the present embodiment, the master controller of controller local area network receives the DHCP Discover of device node broadcast
After message, an available ID (ID) can be distributed according to random number.
In actual applications, ID is 1 byte, and its maximum magnitude is 0-255；Because the ID for defining specific function is occupied
Numbering (for example, the ID that can carry of DHCP NAck messages is 0), so ID that device node uses can be left for between 4-240.
For example, after master controller receives the DHCP Discover messages shown in Fig. 2, can distribute one it is 5 (available
ID), and DHCP Offer messages as shown in Figure 3 are broadcasted, is carried in the data field of the DHCP Offer messages and distributed
ID be 5.
Step 130：What the master controller that the device node of controller local area network receives controller local area network was returned
After DHCP Offer messages, the ID in the message is defined as the 2nd ID, and broadcast DHCP Request messages；Wherein,
The DHCP Request messages carry the 2nd ID.
In the present embodiment, the device node of controller local area network receives the DHCP Offer messages of master controller transmission
Afterwards, the ID in data field in the DHCP Offer messages can be defined as the 2nd ID, and is reported by DHCP Request
Text is broadcasted.
For example, after device node receives the DHCP Offer messages shown in Fig. 3, an ID (5) can be defined as into
Two ID, and the DHCP Request messages shown in BROADCASTING GRAPH 4, the 2nd ID is 5 in the data field of the DHCP Request messages.
If it is noted that the device node of controller local area network is not received by the DHCP Offer reports for returning
Wen Hou, can repeat step 110 step.
Step 140：The master controller of controller local area network is received in judge after DHCP Request messages the message
The 2nd ID it is whether consistent with the ID for being distributed before.
In the present embodiment, the master controller of controller local area network receives the DHCP Request reports of device node broadcast
, it is necessary to judge whether the 2nd ID in the DHCP Request messages is consistent with the ID for being distributed before after text.
If inconsistent, illustrate that the device node for broadcasting the DHCP Request messages is illegal, then master controller can be with
Broadcast DHCP NAck messages, the 4th ID is carried in the DHCP NAck messages.As shown in fig. 6, number in DHCP NAck messages
The 4th ID is carried according to area, and the 4th ID is not an effective ID, i.e., be not located between 4-240.Such as this example
In the 4th ID be 0.
Corresponding, device node parses the message and obtains Data's (data field) after the DHCP message is received
In the case that type of message is NAck, can need to re-execute step 110.For example, receiving the DHCP message shown in Fig. 6
Afterwards, the type of message that parsing DHCP message obtains Data (data field) is 5, during due to data area definition type of message, 5 is represented
NAck, it is possible to the DHCP message is determined for DHCP NAck messages, so as to re-execute step 110.
If consistent, illustrate that the device node for broadcasting the DHCP Request messages is legal, then perform step 150.
Step 150：Twoth ID of the master controller of controller local area network in DHCP Request messages institutes with before
In the case that first ID of distribution is consistent, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, institute
State the 3rd ID determined by carrying in DHCP Ack messages.
In the present embodiment, the consistent situation of an ID that the 2nd ID in DHCP Request messages was distributed with before
Under, the 2nd ID can be defined as the 3rd ID by the master controller of controller local area network, and will by DHCP Ack messages
3rd ID is broadcasted.
By taking the DHCP message shown in Fig. 3 and Fig. 4 as an example, due in the DHCP Request message datas area shown in Fig. 4
2nd ID (being 5), is consistent with the ID (being 5) in an ID i.e. Fig. 3 data fields distributed before, so main control
2nd ID can be defined as the 3rd ID by device, broadcast DHCP Ack messages as shown in Figure 5, the number of the DHCP Ack messages
According to carrying the 3rd ID (for 5) in area.
Step 160：What the master controller that the device node of controller local area network receives controller local area network was returned
After DHCP Ack messages, judge whether the 3rd ID in the message is consistent with the 2nd ID.
In the present embodiment, the device node of controller local area network receives the DHCP Ack messages of master controller return
Afterwards, it is necessary to judge whether the 3rd ID in the DHCP Ack messages is consistent with identified 2nd ID.
If consistent, step 170 is performed.
If it is inconsistent, repeating step 110.
Step 170：The device node of controller local area network the 3rd ID in DHCP Ack messages and the 2nd ID
In the case of consistent, final ID is defined as by described 3rd No. ID.
In the present embodiment, in the case that the 3rd ID in DHCP Ack messages is consistent with the 2nd ID, general ability is controlled
The device node of domain network may finally be defined as final ID by described 3rd No. ID.
By the embodiment of the present application, DHCP is used for reference and has entered network packet, pre-defined in controller local area network's agreement
DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages.In this way, controller local
The device node of network can realize that DHCP message is interacted with master controller, i.e., it is similar to enter network packet with DHCP, device node
The DHCP Discover messages for carrying random number can be broadcasted；Master controller can distribute one and can use according to the random number
An ID, and gone out by DHCP Offer message broadcastings；Device node is received described after DHCP Offer messages
After one ID is as the 2nd ID, gone out by DHCP Request message broadcastings；Master controller is in a 2nd ID and ID mono-
In the case of cause, the 2nd ID is gone out as the 3rd ID and by DHCP Ack message broadcastings；End-use device node is being sentenced
In the case that the 3rd ID that breaks is consistent with the 2nd ID, the 3rd ID is defined as final ID.So, controller is realized
LAN automatically to the equipment distribution ID for accessing can realize the efficiency for improving distribution ID, and due to without artificial
Distribution ID, correspondingly also reduces operation cost.
The application based on the embodiment of the method for the device node of controller local area network is introduced below in conjunction with Fig. 7, should
Embodiment can be with corresponding diagram 1：
Step 210：Broadcast DHCP Discover messages；Wherein, in the DHCP Discover messages carry one with
Machine number, the random number is used as temporary mark and sends device address, and controller local area network's agreement has pre-defined DHCP
Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages.
Optionally, the data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
Step 220：After the DHCP Offer messages that the master controller for receiving controller local area network is returned, this is reported
An ID in text is defined as the 2nd ID, and broadcasts DHCP Request messages；Wherein, the DHCP Request messages are carried
2nd ID.
Step 230：After the DHCP Ack messages that the master controller for receiving controller local area network is returned, the report is judged
Whether the 3rd ID in text is consistent with the 2nd ID.
Step 240：In the case that the 3rd ID in DHCP Ack messages is consistent with the 2nd ID, by the 3rd ID
Number it is defined as final ID.
In actual application, such as so miniature equipment of sensor is low-power consumption, will not always go up electricity.Setting
For the equipment that new access when re-powering, can be regarded as, however, the equipment has obtained ID in fact, so will result in
Repeatedly apply for ID, not only occupying multiple can use ID, and extra pressure is caused to server.
In order to solve the above problems, on the basis of above-mentioned Fig. 7, in another embodiment of the application, in the step
After 240, methods described can also include：
The final ID is preserved in memory；
Correspondingly,
Before the step 210, methods described also includes：
Judge whether the ID for preserving is effective；
In the case where the ID for preserving is invalid, the step 210 is performed, that is, broadcast DHCP Discover messages；
In the case of the ID for preserving is effective, the ID preserved in the memory is defined as the 2nd ID, performed described wide
Broadcast DHCP Request messages.
In the present embodiment, the memory can include such as Flash (Flash EEPROM Memory, flash memory).
After device power, by inquiring about the ID preserved in memory；In the case where ID is inquired, the memory is judged
Whether the ID of middle preservation is effective.
Because the ID for distributing is located between 4-240, that is to say, that effective ID must be located between 4-240, otherwise
ID outside 4-240 is invalid.
By the present embodiment, the equipment for once getting ID, can be saved in the ID in memory by the equipment, from
And after the equipment is re-powered, the ID for preserving in memory can be obtained, and in the case of the ID is effective, directly should
After ID is defined as the 2nd ID, DHCP Request messages are broadcasted.So, it is to avoid re-powering equipment every time will repeat to apply
ID。
The application based on the embodiment of the method for the master controller of controller local area network is introduced below in conjunction with Fig. 8, should
Embodiment can be with corresponding diagram 1：
Step 310：After receiving the DHCP Discover messages of device node broadcast of controller local area network, according to
The random number distributes an available ID, and broadcasts DHCP Offer messages；Carried in the DHCP Offer messages
The ID for being distributed.
Optionally, the ID of the distribution is located between 4 to 240.
Step 320：After receiving the DHCP Request messages of device node broadcast of controller local area network, judging should
Whether the 2nd ID in message is consistent with the ID for being distributed before.
Step 330：In the case that an ID that the 2nd ID in DHCP Request messages was distributed with before is consistent,
2nd ID is defined as the 3rd ID, and broadcasts DHCP Ack messages；Wherein, carried in the DHCP Ack messages and determined
The 3rd ID.
Optionally, the data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
With the equipment control based on controller local area network of the foregoing device node based on controller local area network
Embodiment of the method is corresponding, present invention also provides the embodiment of the equipment management device based on controller local area network.
The embodiment that the application is based on the equipment management device of controller local area network can be applied in controller LAN
On the device node of network.Device embodiment can be realized by software, it is also possible to by way of hardware or software and hardware combining
Realize.As a example by implemented in software, used as the device on a logical meaning, being will be non-volatile by the processor of equipment where it
Property memory in corresponding computer program instructions read and run in internal memory what is formed.From for hardware view, such as Fig. 9 institutes
Show, be a kind of hardware structure diagram of the equipment management device place equipment that the application is based on controller local area network, except Fig. 9 institutes
Outside the processor, network interface, internal memory and the nonvolatile memory that show, equipment in embodiment where device generally according to
This is based on the actual functional capability of the equipment control of controller local area network, can also include other hardware, and this is repeated no more.
It is the module of the equipment management device based on controller local area network that the embodiment of the application one is provided referring to Figure 10
Figure, the embodiment is described from the device node side of controller local area network, and described device includes：First radio unit 410,
Second radio unit 420, judging unit 430 and determining unit 440.
Wherein, the first radio unit 410, for broadcasting DHCP Discover messages；Wherein, the DHCP Discover
A random number is carried in message, the random number is used as temporary mark and sends device address, the association of controller local area network
View has pre-defined DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
Second radio unit 420, for the DHCP Offer returned in the master controller for receiving controller local area network
After message, the ID in the message is defined as the 2nd ID, and broadcast DHCP Request messages；Wherein, the DHCP
Request messages carry the 2nd ID；
Judging unit 430, for receive controller local area network master controller return DHCP Ack messages after,
Judge whether the 3rd ID in the message is consistent with the 2nd ID；
Determining unit 440, for the 3rd ID in DHCP Ack messages it is consistent with the 2nd ID in the case of, by institute
State the 3rd No. ID and be defined as final ID.
In an optional implementation：
After the determining unit 440, described device also includes：
Storing sub-units, for the final ID to be preserved in memory；
Correspondingly,
Before first radio unit 410, described device also includes：
Whether judgment sub-unit, the ID for judging to preserve is effective；
First radio unit 410, is additionally operable in the case where the ID for preserving is invalid, broadcast DHCP Discover reports
Text；
Second radio unit 420, is additionally operable in the case of the ID for preserving is effective, and the ID in the message is true
It is set to the 2nd ID, and broadcasts DHCP Request messages.
In an optional implementation：
Data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
Similar, the setting based on controller local area network with the foregoing master controller based on controller local area network
Standby management method embodiment is corresponding, present invention also provides a kind of reality of the equipment management device based on controller local area network
Apply example.
It is the module of the equipment management device based on controller local area network that the embodiment of the application one is provided referring to Figure 11
Figure, the embodiment is described from the master controller side of controller local area network, and described device includes：Allocation unit the 510, the 3rd
Radio unit 520, the radio unit 540 of judging unit 530 and the 4th.
Wherein, allocation unit 510, the DHCP that the device node for receiving controller local area network is broadcasted
After Discover messages, an available ID is distributed according to the random number；
3rd radio unit 520, for broadcasting DHCP Offer messages；Carried in the DHCP Offer messages and distributed
An ID；
Judging unit 530, the DHCP Request messages that the device node for receiving controller local area network is broadcasted
Afterwards, judge whether the 2nd ID in the message is consistent with the ID for being distributed before；
4th radio unit 540, the ID that the 2nd ID in DHCP Request messages was distributed with before is consistent
In the case of, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, in the DHCP Ack messages
3rd ID determined by carrying.
In an optional implementation：
The ID of the distribution is located between 4 to 240.
In an optional implementation：
Data field in the message defines type of message, and the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
In sum, by applying for the present embodiment, used for reference DHCP and entered network packet, it is pre- in controller local area network's agreement
First define DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages.In this way, control
The device node of device LAN processed can realize that DHCP message is interacted with master controller, i.e., it is similar to enter network packet with DHCP,
Device node can broadcast the DHCP Discover messages for carrying random number；Master controller can be distributed according to the random number
One available ID, and gone out by DHCP Offer message broadcastings；After device node receives DHCP Offer messages
Using an ID as after the 2nd ID, gone out by DHCP Request message broadcastings；Master controller the 2nd ID with
In the case that first ID is consistent, the 2nd ID is gone out as the 3rd ID and by DHCP Ack message broadcastings；End-use device
3rd ID is defined as final ID by node in the case where judging that the 3rd ID is consistent with the 2nd ID.So, realize
Controller local area network can be automatically to accessing equipment distribute ID, realize the efficiency for improving distribution ID, and due to
Without manual allocation ID, operation cost is correspondingly also reduced.
The function of unit and the implementation process of effect correspond to step in specifically referring to the above method in said apparatus
Implementation process, will not be repeated here.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is referring to method reality
Apply the part explanation of example.Device embodiment described above is only schematical, wherein described as separating component
The unit of explanation can be or may not be physically separate, and the part shown as unit can be or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Selection some or all of module therein is needed to realize the purpose of application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
Those skilled in the art will readily occur to its of the application after considering specification and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the application, these modifications, purposes or
Person's adaptations follow the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the application and spirit are by following
Claim is pointed out.
It should be appreciated that the application is not limited to the precision architecture for being described above and being shown in the drawings, and
And can without departing from the scope carry out various modifications and changes.Scope of the present application is only limited by appended claim.
Claims (10)
1. a kind of device management method based on controller local area network, it is characterised in that methods described includes：
The device node broadcast DHCP Discover messages of controller local area network；Wherein, the DHCP Discover messages
One random number of middle carrying, the random number is used as temporary mark and sends device address, and controller local area network's agreement is pre-
First define DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
The master controller of controller local area network receive distribute one according to the random number after DHCP Discover messages can
First ID, and broadcast DHCP Offer messages；A distributed ID is carried in the DHCP Offer messages；
The DHCP Offer reports that the master controller that the device node of controller local area network receives controller local area network is returned
Wen Hou, is defined as the 2nd ID, and broadcast DHCP by the ID in the message
Request messages；Wherein, the DHCP Request messages carry the 2nd ID；
The master controller of controller local area network receives the 2nd ID judged in the message after DHCP Request messages therewith
Whether preceding a distributed ID is consistent；
The ID that twoth ID of the master controller of controller local area network in DHCP Request messages was distributed with before
In the case of consistent, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, the DHCP Ack reports
3rd ID determined by being carried in text；
The device node of controller local area network receives the DHCP Ack messages that the master controller of controller local area network is returned
Afterwards, judge whether the 3rd ID in the message is consistent with the 2nd ID；
In the case that the 3rd ID of the device node of controller local area network in DHCP Ack messages is consistent with the 2nd ID,
It is defined as final ID by described 3rd No. ID.
2. a kind of device management method based on controller local area network, it is characterised in that methods described is applied in the control
The device node of device LAN, methods described includes：
Broadcast DHCP Discover messages；Wherein, a random number is carried in the DHCP Discover messages, it is described random
Number is used as temporary mark and sends device address, and controller local area network's agreement has pre-defined DHCP Discover, DHCP
Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
After the DHCP Offer messages that the master controller for receiving controller local area network is returned, by the ID in the message
It is defined as the 2nd ID, and broadcasts DHCP Request messages；Wherein, the DHCP Request messages carry the 2nd ID；
After the DHCP Ack messages that the master controller for receiving controller local area network is returned, the 3rd ID in the message is judged
It is whether consistent with the 2nd ID；
In the case that the 3rd ID in DHCP Ack messages is consistent with the 2nd ID, described 3rd No. ID is defined as final
ID.
3. a kind of device management method based on controller local area network, it is characterised in that methods described is applied in the control
The master controller of device LAN, methods described includes：
After receiving the DHCP Discover messages of device node broadcast of controller local area network, according to the random number point
With an available ID, and broadcast DHCP Offer messages；Distributed first is carried in the DHCP Offer messages
ID；
After receiving the DHCP Request messages of device node broadcast of controller local area network, second in the message is judged
Whether ID is consistent with the ID for being distributed before；
In the case that an ID that the 2nd ID in DHCP Request messages was distributed with before is consistent, by the 2nd ID
It is defined as the 3rd ID, and broadcasts DHCP Ack messages；Wherein, the 3rd ID determined by being carried in the DHCP Ack messages.
4. method according to claim 2, it is characterised in that the 3rd ID and the 2nd ID in DHCP Ack messages
In the case of consistent, described 3rd No. ID is defined as after final ID, methods described also includes：
The final ID is preserved in memory；
Correspondingly,
Before the broadcast DHCP Discover messages, methods described also includes：
Judge whether the ID for preserving is effective；
In the case where the ID for preserving is invalid, the broadcast DHCP Discover messages are performed；
In the case of the ID for preserving is effective, the ID of the preservation is defined as the 2nd ID, performs the broadcast DHCP
Request messages.
5. the method according to any one of claim 1-3, it is characterised in that the data field in the message defines report
Literary type, the type of message takes 1 byte；
1 represents Discover,
2 represent Offer,
3 represent Request,
4 represent Ack,
5 represent NAck.
6. the method according to claim 1 or 3, it is characterised in that the ID of the distribution is located between 4 to 240.
7. a kind of equipment management device based on controller local area network, it is characterised in that described device is applied in the control
The device node of device LAN, described device includes：
First radio unit, for broadcasting DHCP Discover messages；Wherein, one is carried in the DHCP Discover messages
Individual random number, the random number is used as temporary mark and sends device address, and controller local area network's agreement is pre-defined
DHCP Discover, DHCP Offer, DHCP Request, DHCP Ack and DHCP NAck messages；
Second radio unit, for receive controller local area network master controller return DHCP Offer messages after,
An ID in the message is defined as the 2nd ID, and broadcasts DHCP Reques t messages；Wherein, the DHCP Request
Message carries the 2nd ID；
Judging unit, for after the DHCP Ack messages of master controller return for receiving controller local area network, judging should
Whether the 3rd ID in message is consistent with the 2nd ID；
Determining unit, for the 3rd ID in DHCP Ack messages it is consistent with the 2nd ID in the case of, by the described 3rd
No. ID is defined as final ID.
8. a kind of equipment management device based on controller local area network, it is characterised in that described device is applied in the control
On the master controller of device LAN, described device includes：
Allocation unit, after the DHCP Discover messages that the device node for receiving controller local area network is broadcasted, according to
The random number distributes an available ID；
3rd radio unit, for broadcasting DHCP Offer messages；Distributed first is carried in the DHCP Offer messages
ID；
Judging unit, after the DHCP Request messages that the device node for receiving controller local area network is broadcasted, judges
Whether the 2nd ID in the message is consistent with the ID for being distributed before；
4th radio unit, the consistent situation of an ID that the 2nd ID in DHCP Request messages was distributed with before
Under, the 2nd ID is defined as the 3rd ID, and broadcast DHCP Ack messages；Wherein, institute is carried in the DHCP Ack messages
The 3rd ID for determining.
9. device according to claim 7, it is characterised in that after the determining unit, described device also includes：
Storing sub-units, for the final ID to be preserved in memory；
Correspondingly,
Before first radio unit, described device also includes：
Whether judgment sub-unit, the ID for judging to preserve is effective；
First radio unit, is additionally operable to, in the case where the ID for preserving is invalid, broadcast DHCP Discover messages；
Second radio unit, is additionally operable in the case of the ID for preserving is effective, and the ID in the message is defined as into the
Two ID, and broadcast DHCP Request messages.
10. device according to claim 8, it is characterised in that the ID of the distribution is located between 4 to 240.
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Application publication date: 20170609 |