CN111224885A - Node marking method, node marking system and vehicle-mounted keyless system - Google Patents
Node marking method, node marking system and vehicle-mounted keyless system Download PDFInfo
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- CN111224885A CN111224885A CN202010014941.6A CN202010014941A CN111224885A CN 111224885 A CN111224885 A CN 111224885A CN 202010014941 A CN202010014941 A CN 202010014941A CN 111224885 A CN111224885 A CN 111224885A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40234—Local Interconnect Network LIN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a node marking method, a node marking system and a vehicle-mounted keyless system. Therefore, the first node can be connected with other nodes in series in sequence without supporting multi-path driving, on one hand, the cost is reduced, on the other hand, because each node is connected in sequence, the sequence is marked by adopting an increasing sequence number label, the Bluetooth signal intensity is not depended on, and the reliability of the marking sequence is high.
Description
Technical Field
The invention relates to the technical field of intelligent keys, in particular to a node order marking method, a node order marking system and a vehicle-mounted keyless system.
Background
In a vehicle-mounted keyless system, a plurality of BLE-PEPS sub-nodes are distributed at each position of a vehicle body, and the Bluetooth key is positioned through signal intensity measured by different BLE-PEPS sub-nodes. Therefore, the BLE-PEPS sub-nodes need to be ordered so as to clearly show the positions of the BLE-PEPS sub-nodes. The conventional BLE-PEPS node sequencing method mainly comprises two methods: the first method is to adopt a star-shaped structure, namely, a master controller supports multiple LIN drives and controls sub-nodes through multiple LIN lines respectively, thereby forming a standard sequence; this approach requires the master to support multiple LIN drivers, which greatly increases the cost of the overall sequencing scheme. The second method is to use bluetooth signals to locate the calibration sequence, which depends on the bluetooth signal strength during node calibration, and when there is bluetooth interference in the calibration area (e.g. factory), the problem of low reliability of the calibration sequence occurs.
Disclosure of Invention
The invention aims to provide a node order marking method, a node order marking system and a vehicle-mounted keyless system, and aims to solve the problems of high cost or low reliability of the conventional node order marking system.
In order to solve the above technical problem, the present invention provides a node order marking method, which is used in a system in which a plurality of child nodes are sequentially connected, and the node order marking method includes:
the nodes send messages with sequence number labels in sequence, wherein after each node except the first node and the last node receives a message from the previous node, the sequence number label in the received message is stored, the sum of the sequence number label and a preset value is used as a new sequence number label, and the message with the new sequence number label is sent to the next node;
after the last node receives the message from the previous node, the serial number label in the received message is stored, and then a sequencing notice is sent to the first node;
and after the first node receives the sequencing notification, the completion of the sequencing calibration of all the nodes is confirmed.
Optionally, in the node ordering method, after receiving the ordering notification, the first node sends a check command to all other nodes, after receiving the check command sent by the first node, all other nodes respectively report corresponding sequence number labels to the first node, and after receiving the sequence number labels of all other nodes, the first node confirms that the ordering and the calibration of all the nodes are completed.
Optionally, in the node ordering method, when all other nodes report the corresponding sequence number tag to the first node, the reporting and sending time is delayed according to the stored sequence number tag.
Optionally, in the node marking method, if the first node fails to receive the sequence numbers of all other nodes and the current retry sequence number is less than N, returning to mark the retry node, and adding one to the current retry sequence number; the preset initial value of the retry sequence number is 0, and N is a natural number.
Optionally, in the node ordering method, the ordering notification and/or the check command is a CAN message.
Optionally, in the node ordering method, the packet further includes: the system comprises a command feature and a check code, wherein the check code is used for checking the sequence number label and the command feature.
In order to solve the above technical problem, the present invention further provides a node ordering system, which includes a plurality of nodes connected in sequence, wherein a first of the child nodes is connected to the master node;
the node ordering system is configured to:
the nodes send messages with sequence number labels in sequence, wherein after each node except the first node and the last node receives a message from the previous node, the sequence number label in the received message is stored, the sum of the sequence number label and a preset value is used as a new sequence number label, and the message with the new sequence number label is sent to the next node; after the last node receives the message from the previous node, the serial number label in the received message is stored, and then a sequencing notice is sent to the first node; and after the first node receives the sequencing notification, the completion of the sequencing calibration of all the nodes is confirmed.
Optionally, in the node ordering system, all the nodes are sequentially connected through a LIN line or a hard line with a private communication protocol attached thereto.
Optionally, in the node ordering system, a first one of the nodes includes a master port, a last one of the nodes includes a slave port, and the nodes except the first and last two of the nodes each include a master port and a slave port; and the master ports of other nodes except the last node are connected with the slave port of the next node and are used for sequentially transmitting the message.
Optionally, in the node ordering system, the first node is a master node, and the other nodes are child nodes; or all the nodes are child nodes.
In order to solve the technical problem, the invention further provides a vehicle-mounted keyless system which comprises a plurality of BLE-PEPS nodes connected in sequence, wherein all the BLE-PEPS nodes realize sequencing and calibration by using the node sequencing method.
In summary, in the node tagging method, the node tagging system and the vehicle-mounted keyless system provided by the present invention, after each node receives a message from a previous node, it stores a sequence number tag in the received message, and further, a sum of the sequence number tag and a preset value is used as a new sequence number tag, and a message with an updated sequence number tag is sent to a next node. Therefore, the first node can be connected with other nodes in series in sequence without supporting multi-path driving, on one hand, the cost is reduced, on the other hand, because each node is connected in sequence, the sequence is marked by adopting an increasing sequence number label, the Bluetooth signal intensity is not depended on, and the reliability of the marking sequence is high.
Drawings
It will be appreciated by those skilled in the art that the drawings are provided for a better understanding of the invention and do not constitute any limitation to the scope of the invention. Wherein:
fig. 1 is a schematic diagram of a node ordering system according to an embodiment of the present invention.
Detailed Description
To further clarify the objects, advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be noted that the drawings are in greatly simplified form and are not to scale, but are merely intended to facilitate and clarify the explanation of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
The core idea of the invention is to provide a node order marking method, a node order marking system and a vehicle-mounted keyless system, so as to solve the problems of high cost or low reliability of the conventional node order marking system. The following describes a node order marking method and a node order marking system provided by the present invention with reference to the accompanying drawings. Fig. 1 is a schematic diagram of a node ordering system according to an embodiment of the present invention.
Referring to fig. 1, the present invention provides a node ordering system, which includes: and a plurality of nodes (main node 100 and child nodes 101 to 109) connected in sequence. In an exemplary embodiment, the node ordering system includes 1 master node 100 and 9 sub-nodes 101 to 109, the master node 100 is connected to the first sub-node 101 through LIN lines, and all the sub-nodes 101 are sequentially connected through LIN lines.
Based on the node order marking system, the invention provides a node order marking method, which comprises the following steps:
step one S1: a plurality of nodes send messages with sequence number labels in sequence, wherein after each node (the child nodes 101-108) except the first node and the last node (the main node 100 and the child node 109) receives a message from the previous node, the sequence number label in the received message is stored, the sum of the sequence number label and a preset value is used as a new sequence number label, and the message with the new sequence number label (namely the updated sequence number label) is sent to the next node;
step two S2: after the last node (child node 109) receives the message from the previous node (child node 108), the last node stores the serial number label in the received message, and further sends a sequencing notification to the first node (master node 100);
step three S3: and after receiving the sequencing notification, the first node (the master node 100) confirms that the sequencing calibration of all the nodes is completed.
In one example, in step S1, the preset initial value of the serial number label is 1, and the preset value is 1. With such configuration, the sequence number label in the message sent by the master node 100 to the second node (child node 101) is 1, the second node (child node 101) records the value 1 of the sequence number label to the EEPROM after receiving the message from the master node 100, adds one to the original sequence number label, and then sends the message to the third node (child node 102) with the updated sequence number label (2).
After receiving the message from the second node (child node 101), the third node (child node 102) records the value 2 of the serial number label to the EEPROM, adds one to the original serial number label, adds an updated serial number label (3) … to the message sent to the fourth node (child node 103), and so on until the tenth node (i.e., the last child node 109) receives the message from the ninth node (child node 108), records the value 9 of the serial number label to the EEPROM, and further sends a sequencing notification to the master node 100. Optionally, the configuration of the child node 109 may be completely the same as that of the child nodes 101 to 108, after receiving the message of the child node 108, the child node 109 records the value 9 of the sequence number label to the EEPROM, then adds one to the original sequence number label, and then sends the message to the next node in advance, however, since the child node 109 is the last node and is not connected to other nodes thereafter, the sending of the node 109 is not successful, and after a certain time, the pre-sending step is exited over time, and then a sequencing notification is sent to the master node 100, preferably, the sequencing notification is a CAN message. In some embodiments, the master node 100 may confirm that the ranking calibration of all the nodes is completed after receiving the ranking notification.
Preferably, in some other embodiments, in step three S3, after receiving the sorting notification, the main node 100 sends a check command to all other nodes (child nodes 101 to 109), after receiving the check command sent by the main node 100, all other nodes respectively report corresponding sequence numbers to the main node 100, and after receiving the sequence numbers of all other nodes, the main node 100 confirms that the sorting calibration of all the nodes is completed. Preferably, the check command is a CAN message. Preferably, when all other nodes report the corresponding sequence number tags to the master node 100, the reporting and sending time is delayed according to the stored sequence number tags. It should be understood that, in step S1, the sequence number label is not limited to start with 1, and the preset value is not limited to 1, for example, the initial value of the sequence number label may be 100, and the preset value is 20, then after the main node 100 sends the report, the sequence number labels sequentially stored in each child node are: 100. 120, 140 … 260. Based on this, each child node delays according to the respective stored sequence number tag, for example, delays by 100ms, 120ms, and 140ms … 260ms, respectively, and then reports the corresponding sequence number to the master node 100. After receiving the serial numbers of all other nodes, the master node 100 may confirm that the ranking calibration of all the nodes is completed.
Optionally, if the master node 100 fails to receive the sequence numbers of all other nodes and the current retry sequence number is smaller than N, returning to the retry node, and adding one to the current retry sequence number; here, the retry node marking is to return to execute the steps S1 to S3, where the retry number has a preset initial value of 0 and N is a natural number. When there is a failure or other problems in the node ranking system, the master node 100 cannot receive the sequence numbers of all the child nodes, and at this time, retry is attempted, where the retry sequence number is initially 0, if the process of first performing the ranking of the node from step one S1 to step three S3 fails, after returning to the retry performing step one S1 to step three S3, the retry sequence number is incremented by one, if the process fails again, then returning to the retry performing step one S1 to step three S3 … again, and so on, until the retry sequence number is equal to N, retry is no longer attempted. Optionally, N is 3, i.e. the process of trying retries is retried 3 times at the maximum. Of course, those skilled in the art can select different values of N according to actual situations.
Optionally, the packet further includes: the system comprises a command feature and a check code, wherein the check code is used for checking the sequence number label and the command feature. The entire message is specifically defined for the sub-node order, and other components (e.g., NFC) cannot recognize the message and therefore ignore it.
Optionally, in the node ordering system, a first node (the master node 100) includes a master port M, a last node (the child node 109) includes a slave port S, and the nodes except the first and last nodes each include a master port M and a slave port S; the master ports M of the nodes except the last node (child node 109) are all connected to the slave port S of the next node, so as to sequentially transmit the packet. Of course, the master node 100 may also include a slave port S, and the last node (the child node 109) may also include a master port M, that is, all nodes include a master port M and a slave port S, so that all nodes are of the same configuration, and the nodes are convenient to be replaced with each other.
The invention further provides a vehicle-mounted keyless system which comprises a plurality of BLE-PEPS nodes connected in sequence, wherein all the BLE-PEPS nodes realize sequencing and calibration by using the node sequencing method.
In summary, the node tagging method, the node tagging system and the vehicle-mounted keyless system provided by the invention can directly implement node tagging in a module with two LIN paths (i.e. a master port and a slave port), and the possibility of tagging errors caused by interference when the node tagging is performed by using a bluetooth signal can be avoided. The master controller can identify the position of each sub-node in the system by combining the layout information of the sub-nodes on the automobile body, and the position of the sub-node in the automobile body is distinguished, so that the Bluetooth signals received by the specific sub-node are classified, and the position of the Bluetooth key is judged. It should be understood that in some alternative node ordering systems, it is not limited that the nodes must be connected by LIN lines, but those skilled in the art may also directly use other connecting lines, such as hard lines with proprietary communication protocols, and use proprietary protocols (or analog LIN protocols) to implement the ordering of the nodes by similar methods, and the present invention is not limited thereto.
Of course, those skilled in the art can understand that the node ordering method, the node ordering system, and the vehicle-mounted keyless system of the master node and the slave node are only an application example of the node ordering method, the node ordering system, and the vehicle-mounted keyless system provided in this embodiment, and are not limited to the nodes. If the first node sending the message with the sequence number label is not limited to be the master node, it may also be a child node, and other child nodes are connected to the first child node in sequence, and the master node 100 in the steps S1 to S3 is replaced with a child node, and the order of the child nodes may also be implemented.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A node marking method is used in a system in which a plurality of nodes are connected in sequence, and is characterized in that the node marking method comprises the following steps:
the nodes send messages with sequence number labels in sequence, wherein after each node except the first node and the last node receives a message from the previous node, the sequence number label in the received message is stored, the sum of the sequence number label and a preset value is used as a new sequence number label, and the message with the new sequence number label is sent to the next node;
after the last node receives the message from the previous node, the serial number label in the received message is stored, and then a sequencing notice is sent to the first node;
and after the first node receives the sequencing notification, the completion of the sequencing calibration of all the nodes is confirmed.
2. The node sequencing method according to claim 1, wherein a first node sends a check command to all other nodes after receiving the sequencing notification, all other nodes report corresponding sequence number labels to the first node after receiving the check command sent by the first node, and the first node confirms that the sequencing and calibration of all the nodes are completed after receiving the sequence number labels of all other nodes.
3. The node sequencing method according to claim 2, wherein when all other nodes report the corresponding sequence number tag to the first node, the reporting transmission time is delayed according to the stored sequence number tag.
4. The node marking method according to claim 2, wherein if the first node fails to receive the sequence numbers of all other nodes and the current retry sequence number is less than N, returning to the retry node marking and adding one to the current retry sequence number; the preset initial value of the retry sequence number is 0, and N is a natural number.
5. The node ordering method according to claim 2, wherein the ordering notification and/or the check command is a CAN message.
6. The node ordering method according to claim 1, wherein the packet further comprises: the system comprises a command feature and a check code, wherein the check code is used for checking the sequence number label and the command feature.
7. A node ordering system, comprising: a plurality of sequentially connected nodes;
the node ordering system is configured to:
the nodes send messages with sequence number labels in sequence, wherein after each node except the first node and the last node receives a message from the previous node, the sequence number label in the received message is stored, the sum of the sequence number label and a preset value is used as a new sequence number label, and the message with the new sequence number label is sent to the next node; after the last node receives the message from the previous node, the serial number label in the received message is stored, and then a sequencing notice is sent to the first node; and after the first node receives the sequencing notification, the completion of the sequencing calibration of all the nodes is confirmed.
8. The node ordering system according to claim 7, wherein all the nodes are connected in sequence via LIN lines or hard lines with proprietary communication protocols attached thereto.
9. The node ordering system according to claim 7, wherein a first of said nodes comprises a master port and a last of said nodes comprises a slave port, and wherein all but the first and last of said nodes comprise a master port and a slave port; and the master ports of other nodes except the last node are connected with the slave port of the next node and are used for sequentially transmitting the message.
10. A vehicle-mounted keyless system is characterized by comprising a plurality of sequentially connected BLE-PEPS nodes, wherein all the BLE-PEPS nodes realize sequencing calibration by using the node sequencing method according to any one of claims 1-9.
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