EP0422507A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
System and method for communicating data between control unit and master station applicable to automotive vehicle
Assignee: Nissan Motor Co Ltd
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Filing: 1990-10-04
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Granted: —
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Expires: 2010-10-04
Abstract
Abstract A system and method for communicating data between a master station (9) and a plurality of control units (1, 3) applicable to an automative vehicle are disclosed in which if an echoback communication in response to a control command is not received by the master station from the selected control unit with a predetermined period of time upon issuance of a continue command or diagnostic execution command, the controlled state of the electronic control unit is released. Furthermore, to effectively diagnose the control operation of one of the control units interactively with the operation of other control units, an interrupt command may be issued while the selected control unit continues the predetermined control operation, and the remaining control units are then initialized. A different control unit may then be selected and set to a controlled state. While the second selected control unit is in the controlled state an interrupt command may be issued, thus maintaining the second selected control unit in a controlled state. A resume command is then issued to resume communication with the first selected control unit which has been maintained in a controlled state, so that the control operaton of a control unit which is affected by the operation of any one of the other control units can appropriately be diagnosed.
Inventors
- 👤 Hideo Takai
- 👤 Hidetoshi Inagaki
- 👤 Toru Futami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/042; G05B19/0421; G05B2219/00; G05B2219/20; G05B2219/22; G05B2219/2231; G05B2219/25; G05B2219/25156; G05B2219/25158
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
188 words
A system for communicating data between a master station and any one of a plurality of electronic control units, comprising: a) first means for selecting a desired control unit from among a plurality of control units and for transmitting a selection command to form a communicable state with the selected control unit; b) second means for transmitting a control command to make the selected control unit perform a predetermined control operation; c) third means for transmitting a diagnostic execution command to monitor data on the predetermined control operation transmitted from the selected control unit to the master station; d) fourth means for repeatedly transmitting a continuation command for enabling the continuation of the predetermined control operation by the selected control unit, said continuation command being transmitted at least once within a predetermined interval of time for every repetition of said predetermined interval of time; and e) fifth means for counting an elapsed time upon the receipt of either of the continuation command or diagnostic execution command and for terminating the control operation when the counted time exceeds a predetermined interval of time and no continuation command is received.
Claim 2
Independent Claim
188 words
A system for communicating data between a master station and any one of a plurality of electronic control units, comprising: a) first means for selecting a desired control unit from among a plurality of control units and for transmitting a selection command to form a communicable state with the selected control unit; b) second means for transmitting a control command to make the selected control unit perform a predetermined control operation; c) third means for transmitting a diagnostic execution command to monitor data on the predetermined control operation transmitted from the selected control unit to the master station; d) fourth means for repeatedly transmitting a continuation command for enabling the continuation of the predetermined control operation by the selected control unit, said continuation command being transmitted at least once within a predetermined interval of time for every repetition of said predetermined interval of time; and e) fifth means for counting an elapsed time upon the receipt of either of the continuation command or diagnostic execution command and for terminating the control operation when the counted time exceeds a predetermined interval of time and no continuation command is received.
Claim 3
Dependent Claim
20 words
A system as set forth in claim 1, wherein said fifth means is contained in each of said control units.
Claim 4
Dependent Claim
34 words
A system as set forth in claim 1, wherein the fourth means transmits the continuation command to the selected control unit within the predetermined interval of time after transmission of the diagnostic execution command.
Claim 5
Dependent Claim
29 words
A system as set forth in claim 3, wherein the fifth means comprises a timer counting an elapsed time in response to the receipt of the diagnostic execution command.
Claim 6
Dependent Claim
86 words
A system as set forth in claim 4, which further includes: e) sixth means for transmitting an end command to terminate the predetermined control operation initiated by the control command and the communicable state established by the selection command; f) seventh means for transmitting an interruption command to interrupt the communication state, while continuing the control operation of the control unit which has received the control command; and g) eighth means for transmitting a resumption command to resume the communicable state interrupted by the interruption command.
Claim 7
Dependent Claim
43 words
A system as set forth in claim 5, which further includes ninth means for intermittently transmitting two initialize commands to all control units to initialize all control units and master station so that all control units are initialized and enter command wait states.
Claim 8
Dependent Claim
43 words
A system as set forth in claim 6, which further includes tenth means for returning a reply signal to the master station which is a reverse signal of the selection command to confirm that the selected control unit has received the selection command.
Claim 9
Dependent Claim
57 words
A system as set forth in claim 7, wherein the control command includes a monitor item command which is issued from the master station to the selected control unit to monitor internal data from the selected control unit, including at least one information byte indicating an item of control being subsequently transmitted to the selected control unit.
Claim 10
Dependent Claim
28 words
A system as set forth in claim 8, wherein the selected control unit issues a reversed control command to the master station upon receipt of the control command.
Claim 11
Dependent Claim
36 words
A system as set forth in claim 9, which further includes eleventh means for returning a reversed signal of the interruption command to the master station while the selected control unit performs the predetermined control operation.
Claim 12
Dependent Claim
42 words
A system as set forth in claim 10, wherein two initialize commands are issued from the master station to all control units except the presently selected control unit after the selected control unit issues the reversed interruption command to the master station.
Claim 13
Dependent Claim
37 words
A system as set forth in claim 11, wherein another selection command is issued from the master station to any one of the other control units other than a control unit which has received an interrupt signal.
Claim 14
Dependent Claim
53 words
A system as set forth in claim 12, wherein the control commands include a parameter set command to command the selected control unit to command a controlled variable of the selected control unit to be set in a particular state, at least one information byte being subsequently transmitted to the selected control unit.
Claim 15
Dependent Claim
65 words
A system as set forth in claim 13, wherein after another control unit is newly selected after the interruption command is issued to a previously selected control unit, the newly selected control unit issues a reversed interruption command to the master station and the master station issues a resume command to the previously selected control unit for which communication with the master station was interrupted.
Claim 16
Dependent Claim
24 words
A system as set forth in claim 14, wherein the system is applied to an automotive vehicle having a plurality of electronic control units.
Claim 17
Independent Claim
146 words
A system for communicating data between a master station and any one of a plurality of electronic control units, comprising: a) first means for selecting a desired control unit from among a plurality of control units and for transmitting a selection command to form a communicable state with the selected control unit; b) second means for transmitting a control command to make the selected control unit perform a predetermined control operation; c) third means for transmitting an end command to terminate the predetermined operation initiated by the control command and the communicable state initiated by the selection command; d) fourth means for transmitting an interruption command to interrupt the communicable state, while the control operation of the control unit which has received the control command is continued; and e) fifth means for transmitting a resume command to resume the communicable state interrupted by the interruptions command.
Claim 18
Independent Claim
146 words
A system for communicating data between a master station and any one of a plurality of electronic control units, comprising: a) first means for selecting a desired control unit from among a plurality of control units and for transmitting a selection command to form a communicable state with the selected control unit; b) second means for transmitting a control command to make the selected control unit perform a predetermined control operation; c) third means for transmitting an end command to terminate the predetermined operation initiated by the control command and the communicable state initiated by the selection command; d) fourth means for transmitting an interruption command to interrupt the communicable state, while the control operation of the control unit which has received the control command is continued; and e) fifth means for transmitting a resume command to resume the communicable state interrupted by the interruptions command.
Claim 19
Dependent Claim
43 words
A system as set forth in claim 16, which further includes sixth means for intermittently transmitting two initialize commands to all control units to initialize all control units and master station so that all control units are initialized and enter command wait states.
Claim 20
Dependent Claim
43 words
A system as set forth in claim 17, which further includes seventh means for returning a reply signal to the master station which is a reverse signal of the selection command to confirm that the selected control unit has received the selection command.
Claim 21
Dependent Claim
56 words
A system as set forth in claim 18, wherein the control command includes a monitor:item command which is issued from the master station to the selected control unit to monitor internal data from the selected control unit, including at least one information byte indicating an item of control being subsequently transmitted to the selected control unit.
Claim 22
Dependent Claim
28 words
A system as set forth in claim 19, wherein the selected control unit issues a reversed control command to the master station upon receipt of the control command.
Claim 23
Dependent Claim
51 words
A system as set forth in claim 20, which further includes eighth means for transmitting a diagnostic execution command to the selected control unit to monitor the internal data of the selected control unit so as to confirm whether the predetermined control operation is carried out in the selected control unit.
Claim 24
Dependent Claim
36 words
A system as set forth in claim 21, which further includes ninth means for returning a reversed signal of the interruption command to the master station while the selected control unit performs the predetermined control operation.
Claim 25
Dependent Claim
42 words
A system as set forth in claim 22, wherein two initialize commands are issued from the master station to all control units except the presently selected control unit after the selected control unit issues the reversed interruption command to the master station.
Claim 26
Dependent Claim
37 words
A system as set forth in claim 23, wherein another selection command is issued from the master station to any one of the other control units other than a control unit which has received an interrupt signal.
Claim 27
Dependent Claim
53 words
A system as set forth in claim 24, wherein the control commands include a parameter set command to command the selected control unit to command a controlled variable of the selected control unit to be set in a particular state, at least one information byte being subsequently transmitted to the selected control unit.
Claim 28
Dependent Claim
65 words
A system as set forth in claim 25, wherein after another control unit is newly selected after the interruption command is issued to a previously selected control unit, the newly selected control unit issues a reversed interruption command to the master station and the master station issues a resume command to the previously selected control unit for which communication with the master station was interrupted.
Claim 29
Dependent Claim
74 words
A system as set forth in claim 16, which further includes sixth means for transmitting a continuation command related to the continuation of the predetermined control operation by the selected control unit and seventh means for counting a preselected time interval upon the receipt of either the control command or the continuation command and for terminating the predetermined control operation initiated by the control command when the counted time exceeds the predetermined time interval.
Claim 30
Dependent Claim
20 words
A system as set forth in claim 27, wherein said seventh means is contained in each of said control units.
Claim 31
Dependent Claim
57 words
A system as set forth in claim 28, which further includes eighth means for transmitting a diagnostic execution command to the selected control unit after the control command has been issued from the master station to the selected control unit and wherein the sixth means issues the continuation command after the diagnostic execution command has been issued.
Claim 32
Independent Claim
152 words
A method for communicating data between a master station and a plurality of electronic control units applicable to an automotive vehicle, comprising: a) selecting a desired control unit from among a plurality of control units and transmitting a selection command to form a communicable state to the selected control unit; b) transmitting a control command to make the selected control unit perform a predetermined control operation; c) transmitting a diagnostic execution command to monitor a data on the predetermined control operation to the selected control unit; d) repeatedly transmitting a continuation command related to the continuation of the predetermined control operation by the selected control unit for each predetermined interval of time; and e) counting an elapsed time upon the receipt of either of the continuation command or diagnostic execution command and terminating the control operation when the counted time exceeds a predetermined interval of time and no continuation command is received.
Claim 33
Independent Claim
152 words
A method for communicating data between a master station and a plurality of electronic control units applicable to an automotive vehicle, comprising: a) selecting a desired control unit from among a plurality of control units and transmitting a selection command to form a communicable state to the selected control unit; b) transmitting a control command to make the selected control unit perform a predetermined control operation; c) transmitting a diagnostic execution command to monitor a data on the predetermined control operation to the selected control unit; d) repeatedly transmitting a continuation command related to the continuation of the predetermined control operation by the selected control unit for each predetermined interval of time; and e) counting an elapsed time upon the receipt of either of the continuation command or diagnostic execution command and terminating the control operation when the counted time exceeds a predetermined interval of time and no continuation command is received.
References Cited (Backward Citations)
No citation records indexed.
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