CN110579992A - Vehicle-mounted Ethernet awakening/sleeping control system and method - Google Patents
Vehicle-mounted Ethernet awakening/sleeping control system and method Download PDFInfo
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- CN110579992A CN110579992A CN201910995691.6A CN201910995691A CN110579992A CN 110579992 A CN110579992 A CN 110579992A CN 201910995691 A CN201910995691 A CN 201910995691A CN 110579992 A CN110579992 A CN 110579992A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
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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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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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
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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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
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
- H04L67/1061—Peer-to-peer [P2P] networks using node-based peer discovery mechanisms
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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
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
When a vehicle is in a parking state and an Ethernet communication function is not needed any more, an Ethernet electronic control unit enters a low-energy consumption mode through the sleep process of a physical layer chip, so that the power consumption is reduced; when the Ethernet communication function is needed, the Ethernet electronic control unit which enters the dormant state is awakened through a local awakening or remote awakening process, so that the Ethernet electronic control unit establishes link connection to recover the Ethernet communication. The multi-node local dormancy awakening system comprises a gateway routing node and a plurality of single-node electronic control units, so that in the vehicle-mounted Ethernet multi-node network, part of nodes need to be in an awakening state to realize the realization of the communication process and ensure the function, and part of nodes are in a dormant state to realize the reduction of power consumption because the functions of the nodes are not used and other nodes do not need to communicate with the nodes.
Description
Technical Field
the invention relates to a dormancy wakeup control system and a dormancy wakeup control method for communication nodes in network communication, in particular to a point-to-point and multi-node local dormancy wakeup control system and a method for a vehicle-mounted Ethernet.
background
With the increasing update of automobile motor technology, the 5G technology is gradually commercialized, and the automatic driving technology is rapidly developed. The new changes and developments of the automobile industry are being promoted by the new four changes of electromotion, networking, sharing and intellectualization.
at present, a general high-bandwidth network is urgently needed by automobiles to adapt to bandwidths required by advanced driving assistance systems, audio-video entertainment, automobile networking and the like. Vehicular Ethernet is a high bandwidth automotive network that can communicate using a pair of unshielded twisted pair wires, including 100BASE-T1(100M bit/s), 1000BASE-T1(1G bit/s), and so on.
the power consumption of a typical 100M bit/s Ethernet physical layer chip transceiver in the working state is 100-300 mW, and the power consumption of a gigabit Ethernet physical layer chip transceiver in the working state is higher. When the vehicle is in a parking state, the Ethernet physical layer chip becomes one of main contributors of power consumption on a circuit board of the electronic control unit, and aims to reduce the power consumption of the Ethernet physical layer chip when the Ethernet physical layer chip is idle and reduce the temperature of a system.
for sleep and wake of the vehicle-mounted Ethernet, some patents mention hardware control systems thereof, but a sleep and wake method is not clear; some patents mention the dormancy wakeup control method, but do not specify the dormancy wakeup interaction process and the control state conversion of the physical layer chip, and do not specify the multi-node local dormancy wakeup control system and method; based on this, there is a need for a structure and implementation of a system and method for controlling sleep and wake-up of a vehicle-mounted ethernet.
disclosure of Invention
in view of the existing problems, the invention provides a vehicle-mounted ethernet point-to-point wake-up/sleep control system, which comprises a first electronic control unit, a second electronic control unit and a cable for connecting the first electronic control unit and the second electronic control unit; the two electronic control units have the same structure and both comprise: the device comprises a physical layer chip, a voltage regulator and a micro control unit; the micro control unit is used for transmitting information to a physical layer chip in the same electronic control unit, and meanwhile, the micro control unit is used for processing the information received and transmitted by the physical layer chip; the physical layer chip transmits information to a physical layer chip of another electronic control unit through a cable, and meanwhile, when the physical layer chip receives the information of the physical layer chips of other electronic control units, the information needs to be transmitted to a micro control unit of the same electronic control unit;
the voltage regulator is used for providing voltage required by work for the micro control unit and the physical layer chip in the same electronic control unit, and meanwhile, each physical layer chip also controls whether the voltage regulator in the same electronic control unit outputs partial voltage required by work of the micro control unit and the physical layer chip in each electronic control unit.
on the other hand, the invention also provides a method for controlling the point-to-point awakening/sleeping of the vehicle-mounted Ethernet by utilizing the control system,
The vehicle-mounted Ethernet point-to-point awakening/sleeping control method comprises a vehicle-mounted Ethernet point-to-point awakening process and a sleeping process; the point-to-point awakening process comprises the following steps:
assuming that the first electronic control unit and the second electronic control unit are both in a sleep state at the beginning;
At this time, the first electronic control unit is awakened by the local awakening source, and the process is that the local awakening source triggers an awakening event, namely, the voltage of the awakening pin of the first physical layer chip is updated from an invalid voltage value (such as low voltage) to an effective voltage value (such as high voltage), so as to control a signal which is output by the first physical layer chip and controls the voltage regulator; the local wake-up source, i.e. triggered by hardware, refers to different trigger conditions for different control units. For example, for the vehicle body controller, the action of opening the vehicle door is a local wake-up source, after the vehicle body controller wakes up, other nodes are woken up, and after the vehicle body controller wakes up, the process of waking up other nodes again belongs to remote wake-up.
Enabling a first voltage regulator in the first electronic control unit, starting to provide voltage required by stable work for the first micro control unit and the first physical layer chip, and awakening the first micro control unit;
at the moment, the first electronic control unit needs to perform Ethernet communication with the second electronic control unit;
a first micro control unit of the first electronic control unit controls the first physical layer chip to enter a wake-up state from a dormant state;
The first physical layer chip sends a pulse signal through a cable to serve as a wake-up request;
the second physical layer chip detects the activity on the cable, and the activity is used as remote awakening so as to be converted from a dormant state to an awakening state;
The second physical layer chip enables the second voltage regulator through the control circuit, so that the second voltage regulator outputs a voltage meeting the normal working requirements of the second micro control unit and the second physical layer chip, and awakens the second micro control unit and the second physical layer chip;
the first micro control unit enables link control in the first physical layer chip, and the first physical layer chip sends a training signal through a cable so as to establish link connection with the second physical layer chip;
after receiving the training signal of the first physical layer chip, the second physical layer chip also sends the training signal to the first physical layer chip;
after the link connection between the first micro control unit and the second micro control unit is completed, the network management modules in the first micro control unit and the second micro control unit start to send network management messages, control the first electronic control unit and the second electronic control unit to continuously keep the awakening state, and start Ethernet communication.
further, the point-to-point dormancy process is as follows:
the first electronic control unit and the second electronic control unit are assumed to be in an awakening state at the beginning;
at the moment, the network management module of the first electronic control unit requests dormancy and sends a control instruction to the first physical layer chip;
After receiving the dormancy control instruction, the first physical layer chip sends a low-power-consumption dormancy request to the second physical layer chip through a cable;
after detecting the low-power-consumption sleep request on the cable, the second physical layer chip sends the sleep request to the second micro control unit through interruption;
after the second micro control unit acquires the sleep request information of the first micro control unit through interruption, if the second micro control unit does not have communication requirements, the second micro control unit does not send the network management message any more;
After the second physical layer chip does not receive the awakening request of the first physical layer chip and the network management message of the second micro control unit within a certain time, the second physical layer chip enters a dormancy request mode and sends a low-power-consumption dormancy request;
when the first physical layer chip and the second physical layer chip detect that the first physical layer chip and the second physical layer chip both send and receive low-power consumption sleep requests, the first physical layer chip and the second physical layer chip respectively enter a sleep silent mode;
Entering a sleep mode when the first physical layer chip and the second physical layer chip detect that no communication signal exists on the cable;
The first physical layer chip and the second physical layer chip respectively control the output voltage of the first voltage regulator and the second voltage regulator through the control signal, namely control the first micro control unit and the second micro control unit to stabilize the working voltage, and further control the first micro control unit and the second micro control unit to enter a sleep mode so as to complete a sleep process and reduce power consumption.
further, the states included in each physical layer in the vehicle-mounted ethernet point-to-point wake-up/sleep control method are as follows: a normal state, a sleep acknowledge state, a sleep request state, a sleep failure state, a sleep silence state, and a sleep state.
when the vehicle is in a parking state and the Ethernet communication function is not needed any more, the Ethernet electronic control unit enters a low-energy consumption mode through the dormancy process of the vehicle-mounted Ethernet physical layer chip, so that the power consumption of the Ethernet electronic control unit is reduced, and the electric energy consumption of the storage battery is reduced.
when the Ethernet communication function is needed, the Ethernet electronic control unit which enters the dormant state is awakened through a local awakening or remote awakening process, so that the Ethernet electronic control unit establishes link connection so as to recover the Ethernet communication.
The invention also provides a vehicle-mounted Ethernet multi-node local awakening/sleeping control system, which comprises a gateway routing node electronic control unit, a plurality of single-node electronic control units and communication cables between the gateway routing node electronic control unit and the plurality of single-node electronic control units; the gateway routing node electronic control unit comprises a micro control unit, a switch chip, a voltage regulator and a plurality of physical layer chips; the number of the physical layer chips corresponds to the number of the single-node electronic control units; each physical layer chip is correspondingly connected with each single-node electronic control unit through a corresponding communication cable; the micro control unit exchanges data with the switch chip through a link; the micro control unit can realize local awakening triggering on a plurality of physical layer chips through a plurality of local awakening pin circuits, and can realize register reading and writing on the plurality of physical layer chips through a plurality of management data interface circuits; the switch chip and each physical layer chip exchange data through corresponding different communication links; the voltage regulator controls the voltage regulation supply of the micro control unit, the switch chip and each physical layer chip through the voltage output circuit; each physical layer chip controls the enabling of the voltage regulator in parallel through respective INH pin lines; the single-node electronic control units have the same composition structure and comprise physical layer chips, voltage regulators and micro control units.
The invention also provides a vehicle-mounted Ethernet multi-node local awakening/sleeping control method by utilizing the control system, which comprises a vehicle-mounted Ethernet multi-node local awakening process and a local sleeping process, wherein the multi-node local awakening process is carried out. Firstly, a single-node electronic control unit is awakened by a local awakening source, then a gateway routing node electronic control unit is awakened remotely through a corresponding communication cable, and then a request for awakening other single-node electronic control units needing to be awakened is sent to the gateway routing node electronic control unit through the communication cable; the micro control unit triggers the physical layer chips corresponding to other single-node electronic control units to leave a dormant state through a local wake-up pin circuit, and simultaneously transmits wake-up instructions through register write-in operation to wake up the physical layer chips corresponding to other single-node electronic control units; then remotely awakening other single-node electronic control units to be awakened through the corresponding communication cables; and the physical layer chip which does not request to be awakened and the corresponding single-node electronic control unit continue to keep the dormant state, and finally the vehicle-mounted Ethernet multi-node local awakening process is realized.
The vehicle-mounted Ethernet multi-node local dormancy awakening system comprises a gateway routing node and a plurality of single-node electronic control units, and mainly realizes that in a vehicle-mounted Ethernet multi-node network, part of nodes need to be in an awakening state to realize the communication process and ensure the function realization, and part of nodes are in a dormant state to realize the power consumption reduction because the functions of the nodes are not used and other nodes do not need to communicate with the nodes.
The invention has the beneficial technical effects that:
(1) The vehicle-mounted Ethernet point-to-point awakening/sleeping system and the method realize the combination of vehicle-mounted Ethernet hardware control and software control, and promote the realization of vehicle-mounted Ethernet awakening/sleeping application;
(2) through the vehicle-mounted Ethernet multi-node local awakening/sleeping system and method, the nodes needing to communicate are awakened and normally communicate, the nodes not needing to communicate enter the sleeping state, low power consumption is achieved, network management functions and strategies are optimized, and energy is utilized more efficiently.
Drawings
fig. 1 is a schematic diagram of a vehicle-mounted ethernet point-to-point sleep wake-up control system composition mechanism and a control process diagram of a vehicle-mounted ethernet point-to-point sleep wake-up link.
fig. 2 is a schematic diagram of state transitions in a sleep/wake process of a physical layer of a vehicle ethernet.
Fig. 3 is a schematic diagram of a vehicle-mounted ethernet partial dormancy wakeup control system and a vehicle-mounted ethernet partial dormancy wakeup link control process diagram.
Detailed Description
the technical scheme of the invention is explained in detail in the following with the accompanying drawings.
As shown in fig. 1, the vehicle-mounted ethernet peer-to-peer dormancy wakeup control system in the invention is composed of a first electronic control unit 101 of an ethernet communication node, a second electronic control unit 108 of the ethernet communication node, and a cable 115 connecting the two ethernet nodes.
As shown in fig. 2, the sleep and wake-up process of the vehicle-mounted ethernet physical layer in the present invention relates to the vehicle-mounted ethernet physical layer, and the states thereof include: a normal state 201, a sleep acknowledge state 203, a sleep request state 202, a sleep failure state 205, a sleep silence state 204, and a sleep state 206.
As shown in fig. 3, the vehicle-mounted ethernet local dormancy wakeup control system of the invention is composed of a gateway routing node electronic control unit 310, single-node electronic control units a (301), B (302), C (303), D (304), and communication cables 321, 322, 323, 324 between the gateway routing node electronic control unit 310 and each single-node electronic control unit a-D. The gateway routing node electronic control unit 310 includes: a micro control unit 320, a switch chip 330, a voltage regulator 335, and a plurality of physical layer chips 311, 312, 313, 314. Micro-control unit 320 exchanges data with switch chip 330 via link 329; the mcu 320 can trigger the local wake-up of the phy chips 311, 312, 313, 314 through the local wake-up pin lines 305, 306, 307, 308, and can read and write the register of the phy chip 311 and 314 through the management data interface lines 331, 332, 333, 334. The local wake-up control signal 309 of the electronic control unit 301 is illustrated in fig. 3, and the local wake-up signals of the remaining electronic control units 302 and 304 are not illustrated in fig. 3. Communication links 325, 326, 327, 328 illustrate the exchange of data by switch chip 330 with physical layer chip 311 and 314. The voltage regulator 335 controls the voltage regulation supply of the micro control unit 320, the switch chip 330, the respective physical layer chips 311, 312, 313, 314 through the voltage output line 319; each physical layer chip 311, 312, 313, 314 controls the enablement of the voltage regulator 335 in parallel via its own INH pin line 315, 316, 317, 318; the single-node electronic control units 301, 302, 303 and 304 have the same structure and all comprise a physical layer chip, a voltage regulator and a micro control unit.
The method comprises a vehicle-mounted Ethernet point-to-point awakening process and a sleeping process, and a multi-node local sleeping process and an awakening process:
Referring to fig. 1, the point-to-point wake-up process is:
It is assumed that both the first electronic control unit 101 and the second electronic control unit 108 are in the sleep state 206 at the initial time;
the local wake-up source first wakes up the first electronic control unit 101;
the local wake-up source triggers a wake-up event, that is, the voltage of the wake-up pin 116 of the first phy layer chip 103 is changed from an invalid voltage value (e.g., low voltage) to an valid voltage value (e.g., high voltage) (similarly, if the local wake-up source wakes up the second ecu 108, the voltage of the wake-up pin 119 of the second phy layer chip 110 is changed from the invalid voltage value to the valid voltage value), and the first phy layer chip 103 internally controls the enable of the control signal 106 output by the first voltage regulator 104;
After the first voltage regulator 104 is enabled, the first micro control unit 102 starts to be supplied with a voltage 107 required by stable operation, the first micro control unit 102 is awakened, and the first physical layer chip 103 is simultaneously supplied with the voltage required by stable operation;
the first mcu 102 performs a write operation on the first register 122 of the first phy chip 103 via the management data I/O interface line 105 (similarly, if the local wake-up source wakes up the second ecu 108, the second mcu 109 sends a wake-up control signal via the management data I/O interface line 112) (for the second ecu 108, the second mcu 109 performs a write operation on the second register 123 of the second phy chip 110), so that the first phy chip 103 is switched from the sleep state 206 to the normal state 201, and wakes up the first phy chip 103;
The first electronic control unit 101 wakes up the second electronic control unit 108 and establishes a communication link connection therewith;
The first phy layer chip 103 will send a pulse signal as a wake-up request over the cable 115;
The second phy chip 110 detects the pulse signal on the cable 115 and wakes up it as a remote wake-up, and then goes from the sleep state 206 to the normal state 201 through transition 215;
After the second physical layer chip 110 enters the normal state 201, the second voltage regulator 111 is enabled through the control line 113, so that the second voltage regulator 111 provides a voltage 114 for the second micro control unit 109 to work normally, the second micro control unit is awakened, and meanwhile, the second voltage regulator 111 provides a voltage for the second physical layer chip 110 to work normally;
The first mcu 102 writes the first register 122 of the first phy layer chip 103 via the management data I/O interface line 105 to enable link control, and the first phy layer chip 103 sends a training signal via the cable 115 to establish a link connection with the second phy layer chip 110;
after receiving the training signal of the first physical layer chip 103, the second physical layer chip 110 will also send the training signal to the first physical layer chip 103;
after the first physical layer chip 103 and the second physical layer chip 110 send and receive training signals, setting a flag bit of a register indicating that link connection is established inside;
the first micro control unit 102 and the second micro control unit 109 determine that the link connection is established by reading the registers of the first physical layer chip 103 and the second physical layer chip 110;
after the link connection is established, the first mcu 102 and the second mcu 109 start to send network management messages from the network management modules 120 and 121, control the first ecu 101 and the second ecu 108 to keep awake status and start ethernet communication.
the point-to-point dormancy process is as follows:
it is assumed that the first electronic control unit 101 and the second electronic control unit 108 are both in the wake-up state at the initial time, i.e., both in the normal state 201;
at this time, the network management module 120 of the first electronic control unit 101 requests hibernation, and the first micro control unit 102 performs a write operation on the first register 122 of the first physical layer chip 103 through the management data I/O interface line 105 to transmit a hibernation request control instruction;
After receiving the sleep control command, the first phy layer chip 103 transitions from the normal state 201 to the sleep request state 202, starts a sleep request timer, and sends a low power sleep request to the second phy layer chip 110 through the cable 115;
after detecting that the low power sleep request is received on the cable 115, the second phy chip 110 transitions 208 from the normal state 201 to the sleep confirmation state 203, starts a sleep request timer, and sends the sleep request to the second mcu 109 via an interrupt;
after the second micro control unit 109 acquires the sleep request information of the first micro control unit 102 through interruption, if the second micro control unit itself has no communication requirement, the second micro control unit does not send the network management message any more;
Before the sleep request timer overflows, if the second phy chip 110 receives a wake-up request from the first phy chip 103 or a network management packet from the second mcu 109, the sleep process is terminated 209 and returns to the normal state 201;
when the sleep request timer overflows, if the wake-up request of the first physical layer chip 103 is not received all the time, the second physical layer chip 110 is switched 210 from the sleep confirmation state 203 to the sleep request state 202, starts the sleep request timer, and sends a low-power-consumption sleep request;
after the second physical layer chip 110 detects that it has sent and received the low power consumption sleep request, it will switch from the sleep request state 202 to the sleep silent state 204;
When the first phy layer chip 103 is in the sleep request state 202 and the sleep request timer overflows, it fails to detect that it has sent and received the low power consumption sleep request, and transitions from the sleep request state 202 to the sleep failure state 205, and then returns to the normal state 201 to return to the wake-up state;
The first phy layer chip 103, before the sleep request state 202 and the sleep request timer expires, detects that it has sent and received a low power consumption sleep request, and then transitions from the sleep request state 202 to a sleep silence state 204;
when the sleep silent state 204 and the sleep request timer overflow, the second phy chip 110 fails to detect that there is no communication signal on the cable 115, i.e., fails to satisfy the sleep condition, transitions from the sleep silent state 204 to the sleep failure state 205, returns to the normal state 201, and returns to the wake-up state;
the second phy chip 110 transitions from the sleep silence state 204 to the sleep state 206 when detecting that there is no communication signal on the cable 115 before the sleep silence state 204 and the sleep request timer expires;
When the first phy layer chip 103 fails to detect that there is no communication signal on the cable 115 in the sleep silent state 204 and the sleep request timer expires, i.e., fails to satisfy the sleep condition, the sleep silent state 204 is converted to the sleep failure state 205, and then returns to the normal state 201 to return to the wake-up state;
the first phy layer chip 103 transitions from the sleep silent mode 204 to the sleep state 206 when detecting that there is no communication signal on the cable 115 before the sleep silent state 204 and the sleep request timer expires;
After the second phy layer chip 110 enters the sleep state 206, the second voltage regulator 111 is controlled by the control signal 113 to stop providing the voltage required for stable operation to the second micro-control unit 109 and the second phy layer chip 110, and further the second micro-control unit 109 is controlled to enter the sleep mode;
After the first phy layer chip 103 enters the sleep state 206, the first voltage regulator 104 is controlled by the control signal 106 to stop providing the voltage required for stable operation to the first micro control unit 102 and the first phy layer chip 103, and further the first micro control unit 102 is controlled to enter the sleep mode;
Therefore, the first micro control unit 102, the first physical layer chip 103, the second micro control unit 109 and the second physical layer chip 110 of the first electronic control unit 101 and the second electronic control unit 108 all enter a sleep state/mode, so that a point-to-point sleep process of the ethernet nodes connected by the link is completed, and power consumption is reduced.
as shown in fig. 3, the multi-node local wake-up process:
assuming that all nodes in the initial state are in a dormant state, the multi-node local wake-up process takes the case of waking up the gateway routing node electronic control unit 310, the single-node electronic control units a (301), B (302) and D (304), and not waking up the single-node electronic control unit C (303) as an example, and other similar structures, similar wake-up nodes all belong to a part of the present invention and are not separately described.
at this time, the single-node electronic control unit a 301 is awakened by the local awakening source 309, the first electronic control unit 101 in the same point-to-point awakening process as the self awakening process is remotely awakened by the gateway routing node electronic control unit 310 through the cable 321, and the second electronic control unit 108 in the same point-to-point awakening process as the remote awakening process, that is, the physical layer chip 311, the voltage regulator 335, the micro control unit 310, and the switch chip 330 are all awakened.
after the single-node electronic control unit 301 remotely wakes up the gateway routing node electronic control unit 310 through the cable 321, a request to wake up the other single-node electronic control units 302 and 304 that need to be woken up is issued to the gateway routing node electronic control unit 310 through the cable 321. At this time, the micro control unit 320 triggers the physical layer chips 312 and 314 to leave the sleep state by setting the voltage of the local wake-up pin lines 306 and 308 from low to high, and simultaneously the micro control unit 320 performs a write operation on the registers of the physical layer chips 312 and 314 through the management data interface lines 332 and 334 to transmit a wake-up instruction, thereby realizing the wake-up of the physical layer chips 312 and 314.
the single-node electronic control units 302 and 304 are then remotely wakened via cables 322, 324, respectively, with the remote wake-up process referencing the wake-up process of the second electronic control unit 108 in a point-to-point wake-up process.
the physical layer chip 313 and the single node electronic control unit 303 continue to remain in the sleep state because the electronic control unit 301 does not request the electronic control unit 320 to wake up. And finally, a vehicle-mounted Ethernet multi-node local awakening process is realized.
As shown in fig. 3, the multi-node partial dormancy process is:
Assuming that each node is in an awake state in the initial state, the single-node electronic control units 301, 302, and 304 and the gateway routing node electronic control unit 310 still need to communicate with each other to realize their functions, and the single-node electronic control unit 303 itself does not use its functions and does not need to communicate with other nodes.
the dormancy process of the single-node electronic control unit 303 refers to the first electronic control unit 101 in the peer-to-peer dormancy process, and the physical layer chip 313 in the gateway routing node electronic control unit 310 refers to the second physical layer chip 110 of the second electronic control unit 108 in the peer-to-peer dormancy process, where the main difference from the peer-to-peer dormancy process is that: after the physical layer chip 313 in the gateway routing node electronic control unit 310 enters the sleep state, the control signal 317 of the voltage regulator 335 is in parallel or in relation to the control signal 315 of the other physical layer chip 311, the control signal 316 of the physical layer chip 312, and the control signal 318 of the physical layer chip 314, and although the control signal 317 outputs a low level, the voltage regulator 335 is not powered off because the control signal output of the other chip is a high level, that is, the voltage 319 externally output by the voltage regulator 335 is still at a normal operating voltage, and therefore, the switch chip 330 and the micro control unit 320 do not enter the sleep mode.
the chips within gateway routing node electronic control unit 310 will only go into sleep state/mode if all single node electronic control units 301, 302, 303, 304 are not operational.
furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A vehicle-mounted Ethernet point-to-point awakening/sleeping control system is characterized in that the control system consists of a first electronic control unit (101), a second electronic control unit (108) and a cable (115) connecting the first electronic control unit and the second electronic control unit (108); the two electronic control units (101, 108) are identical in structure and each comprise: a physical layer chip (103, 110), a voltage regulator (104, 111) and a micro control unit (102, 109); the micro control unit (102,109) is used for transmitting information to a physical layer chip (103, 110) in the same electronic control unit, and meanwhile, the micro control unit (102,109) is used for processing the information received and transmitted by the physical layer chip (103, 110); the physical layer chips (103, 110) transmit information to the physical layer chips (103, 110) of another electronic control unit through cables (115), and simultaneously when the physical layer chips receive the information of the physical layer chips of other electronic control units, the information needs to be transmitted to the micro control unit of the same electronic control unit;
The voltage regulators (104, 111) are used for providing voltages required by the operation for the micro control units (102,109) and the physical layer chips (103, 110) in the same electronic control unit (101, 108), and meanwhile, each physical layer chip also controls whether the voltage regulators (104, 111) in the same electronic control unit output partial voltages required by the operation for the micro control units (102,109) and the physical layer chips (103, 110) in the respective electronic control units (101, 108).
2. a method for performing point-to-point wakeup/sleep control over a vehicle-mounted ethernet by using the control system of claim 1, wherein: the control method comprises a point-to-point awakening process and a dormancy process of a vehicle-mounted Ethernet, wherein the point-to-point awakening process comprises the following steps: the first electronic control unit (101) and the second electronic control unit (108) are assumed to be in a sleep state at the initial time; at the moment, the first electronic control unit (101) is awakened by a local awakening source, the voltage of an awakening pin of the first physical layer chip (103) is updated to be an effective voltage value from an invalid voltage value, and then the first physical layer chip (103) is controlled to output a signal for controlling the first voltage regulator (104); enabling a first voltage regulator (104) in the first electronic control unit (101), further starting to provide voltage required by stable operation for the first micro control unit (102) and the first physical layer chip (103), and waking up the first micro control unit (102); at the moment, the first electronic control unit (101) needs to perform Ethernet communication with the second electronic control unit (108); a first micro control unit (102) of a first electronic control unit (101) configures a flag bit in a first register (122) in a first physical layer chip (103) to enable the first physical layer chip (103) to enter a wake-up state from a sleep state; the first physical layer chip (103) sends a pulse signal through the cable (115) as a wake-up request; the second physical layer chip (110) detects the activity on the cable (115) and uses the activity as remote awakening, and then the second physical layer chip is converted from a dormant state to an awakened state;
the second physical layer chip (110) enables the second voltage regulator (111) through a control line (113), so that the output of the second voltage regulator meets the voltage required by the stable work of the second micro control unit (109) and the second physical layer chip (110), and the second micro control unit (109) and the second physical layer chip (110) are awakened;
the first micro control unit (102) enables link control in the first physical layer chip (103), the first physical layer chip (103) will send a training signal over the cable (115) to establish a link connection with the second physical layer chip (110); after receiving the training signal of the first physical layer chip (103), the second physical layer chip (110) also sends the training signal to the first physical layer chip (103);
after the link connection is completed, the first micro control unit (102) and the second micro control unit (109) start to send network management messages by network management modules (120,121) inside the first micro control unit (102) and the second micro control unit (109), control the first electronic control unit (101) and the second electronic control unit (108) to continuously keep a wake-up state, and start Ethernet communication.
3. the vehicle-mounted Ethernet point-to-point wake-up/sleep control method according to claim 2, characterized in that: the point-to-point dormancy process comprises the following steps: the first electronic control unit and the second electronic control unit are assumed to be in an awakening state at the beginning; at the moment, the network management module of the first electronic control unit requests dormancy and sends a control instruction to the first physical layer chip; after receiving the dormancy control instruction, the first physical layer chip sends a low-power-consumption dormancy request to the second physical layer chip through a cable; after detecting the low-power-consumption sleep request on the cable, the second physical layer chip sends the sleep request to the second micro control unit through interruption; after the second micro control unit acquires the sleep request information of the first micro control unit through interruption, if the second micro control unit does not have communication requirements, the second micro control unit does not send the network management message any more; after the second physical layer chip does not receive the awakening request of the first physical layer chip and the network management message of the second micro control unit within a certain time, the second physical layer chip enters a dormancy request mode and sends a low-power-consumption dormancy request; when the first physical layer chip and the second physical layer chip detect that the first physical layer chip and the second physical layer chip both send and receive low-power consumption sleep requests, the first physical layer chip and the second physical layer chip respectively enter a sleep silent mode; entering a sleep mode when the first physical layer chip and the second physical layer chip detect that no communication signal exists on the cable;
The first physical layer chip and the second physical layer chip respectively control the output voltage of the first voltage regulator and the second voltage regulator through the control signal, namely control the first micro control unit and the second micro control unit to stabilize the working voltage, and further control the first micro control unit and the second micro control unit to enter a sleep mode so as to complete a sleep process and reduce power consumption.
4. the vehicle-mounted Ethernet point-to-point wake-up/sleep control method according to claim 2 or 3, characterized in that: the states of each physical layer in the vehicle-mounted Ethernet point-to-point awakening/sleeping control method are as follows: a normal state (201), a sleep acknowledge state (203), a sleep request state (202), a sleep failure state (205), a sleep silence state (204), and a sleep state (206).
5. A vehicle-mounted Ethernet multi-node local awakening/sleeping control system comprises a gateway routing node electronic control unit (310), a plurality of single-node electronic control units (301, 302, 303, 304) and communication cables (321, 322, 323, 324) between the gateway routing node electronic control unit (310) and the single-node electronic control units (301, 302, 303, 304);
the gateway routing node electronic control unit (310) comprises a micro control unit (320), a switch chip (330), a voltage regulator (335) and a plurality of physical layer chips (311, 312, 313, 314); the number of physical layer chips (311, 312, 313, 314) corresponds to the number of single node electronic control units (301, 302, 303, 304); and each physical layer chip (311, 312, 313, 314) is correspondingly connected with each single-node electronic control unit (301, 302, 303, 304) through a corresponding communication cable (321, 322, 323, 324);
the micro-control unit (320) exchanges data with the switch chip (330) through a link (329); the micro control unit (320) can realize local wake-up triggering on a plurality of physical layer chips (311, 312, 313, 314) through a plurality of local wake-up pin lines (305, 306, 307, 308), and can realize register reading and writing on the plurality of physical layer chips (311, 312, 313, 314) through a plurality of management data interface lines (331, 332, 333, 334);
The switch chip (330) exchanges data with the various physical layer chips (311, 312, 313, 314) via the respective different communication links (325, 326, 327, 328);
the voltage regulator (335) controls the voltage regulation supply of the micro control unit (320), the switch chip (330) and each physical layer chip (311, 312, 313, 314) through the voltage output line (319);
each physical layer chip (311, 312, 313, 314) controls the enabling of the voltage regulator (335) in parallel through respective inhibit pin (INH) lines (315, 316, 317, 318);
The single-node electronic control units (301, 302, 303 and 304) are identical in composition structure and comprise physical layer chips, voltage regulators and micro control units.
6. a multi-node local wake-up/sleep control system for vehicle ethernet using the control system of claim 5, wherein: the control method comprises a vehicle-mounted Ethernet multi-node local awakening process and a local dormancy process. In the multi-node local awakening process, firstly, a single-node electronic control unit A (301) is awakened by a local awakening source (309), then a gateway routing node electronic control unit (310) is remotely awakened through a corresponding communication cable (321), and then requests for awakening other single-node electronic control units (302, 304) needing to be awakened are sent to the gateway routing node electronic control unit (310) through the communication cable (321); the micro control unit (320) triggers the physical layer chips (312, 314) corresponding to the other single-node electronic control units (302, 304) to leave a sleep state through the local wake-up pin lines (306, 308), and simultaneously the micro control unit (320) transmits a wake-up instruction through register write-in operation to wake up the physical layer chips (312, 314) corresponding to the other single-node electronic control units (302, 304); then remotely awakening other single-node electronic control units (302, 304) which need to be awakened through the corresponding communication cables (322, 324);
and the physical layer chip (313) which does not request to be awakened and the corresponding single-node electronic control unit (303) continue to keep the dormant state, and finally the vehicle-mounted Ethernet multi-node local awakening process is realized.
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Denomination of invention: A vehicle Ethernet wake-up / sleep control system and method Effective date of registration: 20220628 Granted publication date: 20210202 Pledgee: Fengxian Branch of Shanghai Rural Commercial Bank Co.,Ltd. Pledgor: SHANGHAI E-PLANET ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2022310000095 |