Method of initializing a system for open/closed-loop control of the operational sequences of a motor vehicle and a system for carrying out the method

• US 6,684,152 B2
• Filed: 07/02/2001
• Issued: 01/27/2004
• Est. Priority Date: 06/30/2000
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Baeuerle, Peter
• Primary Examiner(s): Vo, Hieu T.
• Application Number:
  US09/897,629
• Publication Number:
  US 20020035428A1
• Time in Patent Office: 939 Days
• Field of Search: 701/110, 701/114, 701/115, 701/102, 701/29, 701/35
• US Class Current: 701/114
• CPC Class Codes: B60T 17/221 Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M
• CPC Class Codes: B60W 2050/0045 using databus protocols
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 2219/25032 CAN, canbus, controller area network bus
• CPC Class Codes: G05B 2219/25072 Initialise each module during start up
• CPC Class Codes: G05B 2219/25296 Identification module, type connected I-O, device

Abstract

A method of initializing a system for open/closed-loop control of the operating sequences of a motor vehicle is described. The system has a controller which is connected to a number of sensors via a data bus. The sensors have suitable means which allow a response to be transmitted staggered in time. In order to initialize the system, the controller first transmits a transmission request to sensors of the same type. The sensors of the same type transmit responses staggered in time back to the controller. During the transmission of the responses, a data field of each response is overwritten by the controller with a sensor-specific identifier and a corresponding transmission priority.

Claims

1. A system for performing an open/closed-loop control of an operating sequence of a motor vehicle that includes a controller connected to a plurality of sensors via a data bus, the sensors being subdivided into sensors of the same type, the system comprising:

an arrangement located in each of the plurality of sensors for, when a transmission request is sent from the controller, allowing each sensor to transmit a response staggered in time to the controller.

2. The system according to claim 1, wherein:

the arrangement includes a random generator.

3. The system according to claim 1, wherein:

the data bus includes a CAN bus.

4. A method of initializing a system for an open/closed-loop control of an operating sequence of a motor vehicle that includes a controller connected to a plurality of sensors via a data bus, the method comprising the steps of:

subdividing the sensors into sensors of the same type;

causing the controller to transmit a transmission request to the sensors of the same type;

causing the sensors of the same type to transmit a response to the controller that is staggered in time by an operation of a staggering arrangement; and

during the transmission of the response, causing the controller to overwrite a data field of each response of the sensors with a sensor-specific identifier and a corresponding transmission priority.

5. The method according to claim 4, wherein:

each sensor includes the staggering arrangement, and

the staggering arrangement includes a random generator.

6. The method according to claim 4, further comprising the step of:

storing in a non-volatile memory a result of the overwriting of each response with the sensor-specific identifier and the corresponding transmission priority.

7. The method according to claim 4, further comprising the steps of:

identifying the plurality of sensors; and

after the identifying step, assigning the plurality of sensors to respective locations.

8. The method according to claim 7, wherein the step of assigning the plurality of sensors includes the step of:

comparing signals delivered by the plurality of sensors with test signals.

9. The method according to claim 4, wherein:

the data bus includes a CAN bus.