WO2001005629A1 - Remote interface modules with programmable functions in vehicle multiplexing system - Google Patents
Remote interface modules with programmable functions in vehicle multiplexing system Download PDFInfo
- Publication number
- WO2001005629A1 WO2001005629A1 PCT/US2000/018823 US0018823W WO0105629A1 WO 2001005629 A1 WO2001005629 A1 WO 2001005629A1 US 0018823 W US0018823 W US 0018823W WO 0105629 A1 WO0105629 A1 WO 0105629A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- remote interface
- interface module
- vehicle
- states
- signals
- Prior art date
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Classifications
-
- 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
- B60R16/03—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 supply of electrical power to vehicle subsystems or for
- B60R16/0315—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 supply of electrical power to vehicle subsystems or for using multiplexing techniques
Definitions
- the present invention relates to a system for multiplexed communications on vehicles and particularly relates to providing non-specialized remote interface modules from which may be invoked specialized functionality by an electronic system controller
- the remote interface modules operate specific vehicle systems under the direction of an electronic system controller communicating with the remote interface module over a multiplexed communication system
- the electronic system controller is programmable to implement in sequence, certain states on the remote interface module(s)
- the present invention further relates to a method for installing the programming on electronic system controllers
- Multiplexed communications involve data transmission interconnections which interleave nonsynchronous digital signals into a single serial signal
- Multiplexed communication systems also provide the reverse function (demultiplexing) of dividing the single signal into multiple, nonsynchronousdigital signals
- multiplexed serial communication paths are seen as an effective technique for reducing the number of dedicated communication paths between the numerous switches, sensors, device and gauges installed on the vehicles
- the benefits of using a single, multiplexed serial communication link for passing instructions to and receiving information from vehicle devices as diverse as running lights and rear axle temperature sensors becomes greater
- Multiplexing the signals to and from vehicle systems promises greater physical simplicity through displacing much of the vehicle wiring harness, the reduction of manufacturing costs, the enabling of vehicle electrical load management, and the enhancement of system reliability
- a multiplexed serial communications system can link several remote digital controllers positioned around a vehicle with an electrical system controller (ESC) for two-way communication.
- Remote digital controllers are addressable, allowing them to respond to signals intended for them initialize particular functions. They may also include programming that allows the device to react to local conditions as well as condition indicating signals provided the controller.
- the ESC may pass requests and instructions received for operations of certain devices, addressed to the correct remote controller, in a fashion to condition the timing and duration of the responses to requests to better manage overall vehicle electrical load.
- United States Patent 4,809,177 to Windle, et al which is assigned to the assignee of this patent, relates to a multiplexed communications system in which a central controller organizes signals to various vocational controllers distributed about a vehicle.
- the distributed controllers included internal data processing capability and programming. Among the controllers were engine, cab and chassis controllers.
- the environment of Windle et al. is a limited multiplexing environment, where much operational responsibility is distributed to the controllers.
- Windle et al. teach a controller constructed according to a single design suitable for use both as a chassis controller and a cab controller.
- the chassis controller handles the engine brakes, the ignition, the air conditioning compressor and some external lights while the cab controller handled other external lights, the air conditioning compressor, the windshield wiper motor, among other functions.
- the dual purpose controller is a microprocessor based system running stored programs in local memory.
- the controller is adapted to handle one or the other of the differing sets of functions by being reprogrammed and by applying different inputs to the device. Reprogramming involved overwriting non-volatile memory or replacing programmable read only memory units. Windle et al.
- a vehicle having a plurality of electrical loads, differentiated from one another in terms of required voltage, current drawn, load duration and variability of energization levels.
- One or more generic remote interface modules in addition to controllers such as engine and chassis controllers, are mounted on the vehicle for controlling actuation and energization of the non- standard devices, such as motors driving pumps for hydraulic lifts.
- An electronic system controller (ESC) manages the remote interface modules over a serial communication link to provide the specialized functionality.
- Each remote interface module (RIM) is constructed as a standard component capable of providing digital and analog outputs to devices attached to one or more output ports on the module.
- the remote interface assumes a number of controller states under the control of the electronic system controller for regulating actuation and energization of the differentiated loads.
- Input ports are also provided for digital and analog inputs from sensors, which signals may be formatted for transmission to the electronic system controller.
- the electronic system controller includes memory for storing a data structure specifying permissible remote interface module states and a map to the module's ports to provide for the actuation and energization of the differentiated loads.
- the communication system is accessible over a diagnostic port which may be externally accessed to write a database which specifies RIM functionality to ESC memory
- vehicle specific databases for remote interface modules are tagged to chassis vehicle identification numbers (VINs)
- VINs chassis vehicle identification numbers
- the diagnostic port is accessed and the VINs are retrieved from the ESC by an off-vehicle manufacturing support computer to which the database for the vehicle's remote interface module has been previously stored
- the database is then downloaded to the vehicle to provide specialized response characteristics for the remote interface module
- Fig 1 is a perspective view of a vehicle electrical system
- Fig 2 is a schematic of the vehicle electrical control system contained within the vehicle electrical system of Fig 1 ,
- Fig 3 is a functional illustration of an electrical system controller
- Fig 4 is an illustration of a database providing the functional specification for a remote interface module connected to the vehicle electrical system
- Fig 1 is a perspective view of a vehicle electrical system 10 installed on a vehicle 13
- Vehicle electrical system 10 comprises an electronic system controller (ESC) 30, which is the primary component of a vehicle electronic control system ESC 30 manages a number of vocational controllers disposed on vehicle 13 and executes a load management program which oversees the total load imposed on the vehicle elect ⁇ cal system and power train by various accessories installed on the vehicle
- Most active vehicle components are directly controlled by the vocational controllers, which include a gauge cluster 14, an engine controller 20, a transmission controller 16, an auxiliary instrument and switch bank 12, an antilock brake system (ABS) controller 102, and one or more remote interface modules 40 All vehicle electrical components are attached to a harness 18, which includes a serial data link, power and ground conductors
- the serial data link is a twisted pair cable constructed in accordance with SAE standard J1939 and is externally accessible via a diagnostic port 36
- Gauge cluster 14, transmission controller 16, ABS controller 102 and engine controller 20 may be implemented to exercise substantial local control, incorporating their own local microprocessors and programming and coupled by input and output ports to sensors and controllable elements in the areas under their respective control
- engine controller 20 may monitor an exhaust gas sensor (not shown) on one input channel for indications of unbumed fuel in the exhaust and modify control s ⁇ gnal(s) effecting the fuel/air mixture
- the signals controlled may move a control valve or change the operation of a fuel pump and their determination may take into account the demands for engine power
- ABS controller 102 can engage brakes per an externally applied command, but modify the actuation signal to the brakes upon sensing skidding
- the loads imposed on vehicle 13 systems controlled by the electronic control system of the present invention are usually electrical loads, however, a remote interface module 40 (or a controller such as transmission controller 16) may electronically control the engagement of mechanical devices to the power train of vehicle 13 Gear selection in an automatic transmission would be just one example Other nonelectrical loads could include the control of a clutch for an air conditioning compressor and actuation of pumps driven by the vehicle drive train
- Gauge cluster 14, transmission controller 16 and engine controller 20 all communicate with electronic system controller 30, which also monitors inputs received from the auxiliary instrument and switch bank 12, over the serial communication link in harness 18
- Electronic system controller 30 may be programmed to override the normal response characteristics of the gauge cluster 14, transmission controller 16 and engine controller 20, should electrical and mechanical loads exceed the capacity of the vehicle, should requests conflict with one another, and under other circumstances
- a remote interface module 40 also communicates with ESC 30
- Remote interface module 40 is a general purpose control interface allowing the attachment of various accessories to vehicle 13 As described below, remote interface module 40 provides a plurality of ports providing for each of the following analog inputs, analog outputs, digital inputs, and digital outputs Characte ⁇ zationof a particular port as, for example, an output port, does not necessarily mean that it functions exclusively as an output port
- an output port may include voltage drop sensing elements, current flow sensing elements, or both, allowing determination by ESC 30 of whether, for example, a bulb in a lamp connected to the output port is operative, or whether
- FIG 2 is a schematic illustration of an electronic control system 70 implemented within vehicle electrical system 10
- Electronic control system 70 includes a microprocessor 72 based electronic system controller (ESC) 30
- ESC 30 coordinates multiplexed transmissions of signals on serial communication link 42 and executes a load management program as part of a process a comprehensive control of one or remote interface modules (RIMs) 40A and B
- ESC 30 comprises a microprocessor 72 executing programs stored in memory 74
- Memory 74 is constructed in conventional manner and includes volatile and non-volatile sections, the latter of which is preferably fabricated from flash technology electrically erasable programmable read only memory (EEPROM)
- EEPROM electrically erasable programmable read only memory
- a network interface 73 implements J1939 communications over serial communication link 42
- Serial communication link 42 interconnects the auxiliary instrument and switch bank 12, the gauge cluster 14, the transmission controller 16, engine controller 20, ABS controller 102, and RIMs 40A and 40B Additionally, instrument and switch bank 12 may be connected to cab controller 16 by a private data link 44 All system components are powered by a vehicle electrical power system 45
- RIMs 40A and 40B While the gauge cluster 14, transmission controller 16 and engine controller 20 have well defined tasks, RIMs 40A and 40B have no predetermined vocation and have no distinguishing attribute vis-a-vis one another other than their respective addresses and possibly the number of ports supported RIMs 40A and 40B may nonetheless be applied to the control of various highly differentiated accessories
- RIM 40A may be taken as representative of both RIMs While represented by discreet functional boxes, much of RIM 40A except the J1939 transceiver 50 is conventionally realized using a microcontroller 71 Microcontroller can under the direction of appropriate inputs mimic various circuit and logic elements such as oscillators, buffers analog to digital converters, feed back loops, et cetera RIM 40A always includes a J1939 transce ⁇ verelement50 and a controller area network module 52 which handle communicationstasks defined by the J1939 standard over serial communication link 42
- RIM 40A typically controls, and in some cases drives, both analog and digital devices
- RIM 40A also accepts inputs from both digital and analog devices, primarily switches and sensors
- a plurality of ports 54A through 54F are provided allowing connection to several digital and electrical devices While six ports are shown, RIM 40A allows some salability and the number of ports may be greater or fewer than six
- RIM 40A To explain the operation of RIM 40A a set of functional elements are illustrated, though it will be understood by those skilled in the art that the depicted elements are representative only All functional elements are invoked by ESC 30 through signals communicated to RIM 40A over serial communication link 42
- the attachment of analog devices (not shown) is accommodated by interposing digital to analog (D/A) converters 56 and analog to digital (A/D) converters 58 between a microprocessor 60 and ports 56A-F D/A converter 56 allows digital outputs from the microcontroller to be scaled to an analog signal level A/D converter 58 will typically accept an analog signal from a sensor
- Output control circuitry 60 and thereby RIM 40A, can assume any of several states and sequences of states in response to signals received from ESC 30 in order to apply the appropriate output signals on ports
- Output circuitry 60 may functionally comprise buffers and gating circuitry allowing scaled signals to be applied to the D/A converters 56, and pulse width modulated or digital signals to be supplied directly to output ports 54A and 54B
- An oscillator may be mimicked by repeated alternation of a series of states on an output port
- Particular arrangements of buffers, gating circuitry and the like is organized by channels A, B and C, each of which may be individually addressed by ESC 30 through channel address recognition circuitry
- Inputs may be received on one or more of input ports 54D to 54F and from there transferred to input serializing circuitry 62 Inputs, such as voltage drop or current drawn, may also be taken from any one of output ports 54A-54C Input signals may be associated with a particular input channels by serializing the signals using the clock input from clock 65, which is used to control sampling of the signals received from ports
- ESC 30 determines output states for RIM 40A based, among other things, on the values for signals received on input ports 54D to 54F, inputs from the instrument and switch bank 12, previous states of the RIM, and load management considerations, which in turn may be influenced by inputs received the engine controller 20, the chassis controller 16 and cab controller 14.
- ESC 30 is essentially a computer based on a microprocessor 72 executing stored programs on data stored in memory 74 and communicating with the previously described controllers and remote interface modules through a network adaptor 73 using the J 1939 standard and permissible extensions thereto.
- the data structures defining the functionality of RIMs 40A and 40B are written to memory 74 during vehicle assembly via diagnostic port 36 from an external assembly computer 46 using a database 82. The particular data structure written will be developed for the vehicle from its engineering specifications.
- Data is communicated in both directions between ESC 30 and RIMs 40A and 40B using the J1939 protocol, which provides in turn for certain proprietary protocols and extensions within the standard. To implement the present invention it necessary to extend the protocol to allow the identification of ports within
- Fig. 3 illustrates the operation of ESC 30.
- a load management program 95 is a real time interpreter running in an endless loop that scans a set of values or states stored in state buffering section 94 of the signals processing program 93.
- a possible timing cycle of the loop is 10 milliseconds.
- All ESC 30 actions are conditioned upon the receipt and periodic update of signals received, such as operator inputs, received primarily from the chassis controller 16 and the cab controller 14, engine controller 20 signals and signals from the RIM(s), which may streamed to allow association with the inputs with particular ports, or may be received in response to an interrogation, in which case addressing information may be returned with the response.
- signals received such as operator inputs, received primarily from the chassis controller 16 and the cab controller 14, engine controller 20 signals and signals from the RIM(s), which may streamed to allow association with the inputs with particular ports, or may be received in response to an interrogation, in which case addressing information may be returned with the response.
- All input and output signals are coordinated by a signals processing program 93, which can poll RIMs, assign port values to RIM signals, in reference database 96 and which also stores values obtained in a state buffering table 94 for the use of the load management program 95.
- RIM database 96 characterizes the output for each output port of all RIMs for selected circumstances
- a RIM may be installed on a vehicle intended for use as a fire fighting pumper
- the pump may be driven by an electric motor powered by the vehicle or it may be driven from a clutch allowing connection to the vehicle drive shaft
- the conditions or circumstances controlling actuation of a pump coupled to a RIM may de developed as follows (1) has pump operation been requested (on/off operator input on a digital RIM input port, determined by periodic request for input port status), (2) is the pump currently on or off, (3) vehicle battery voltage, and (4) what are pump R P M 's or the current drawn by the pump's prime mover In this example, vehicle battery voltage is monitored to determine if the vehicle is producing enough power to support
- the load management program 95 executes is tasks, in so far as relate to RIMs, by reference to a
- RIM database 96 as illustrated in Fig 4 RIM functions may be expressed in a number of different ways, such as truth tables 80, state machines 81 , boolean expressions 82 and transfer functions 83 Each such element will include a port mapping 84
- the port mappings 84 define both entry points to truth tables boolean expressions and the like for inputs received from a RIM as well as output values While the invention is shown in only one of its forms, it is not thus limited but is susceptible to various changes and modifications without departing from the spirit and scope of the invention.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00947194A EP1196310B1 (en) | 1999-07-15 | 2000-07-10 | Remote interface modules with programmable functions in vehicle multiplexing system |
DE60025490T DE60025490T2 (en) | 1999-07-15 | 2000-07-10 | PROGRAMMABLE SUBMITTED INTERFACE MODULE FOR MULTIPLEX CONTROL IN MOTOR VEHICLE |
AU60846/00A AU6084600A (en) | 1999-07-15 | 2000-07-10 | Remote interface modules with programmable functions in vehicle multiplexing system |
CA002378015A CA2378015C (en) | 1999-07-15 | 2000-07-10 | Remote interface modules with programmable functions in vehicle multiplexing system |
MXPA02000543A MXPA02000543A (en) | 1999-07-15 | 2000-07-10 | Remote interface modules with programmable functions in vehicle multiplexing system. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/354,452 | 1999-07-15 | ||
US09/354,452 US6272402B1 (en) | 1999-07-15 | 1999-07-15 | Remote interface modules with programmable functions |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001005629A1 true WO2001005629A1 (en) | 2001-01-25 |
Family
ID=23393398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/018823 WO2001005629A1 (en) | 1999-07-15 | 2000-07-10 | Remote interface modules with programmable functions in vehicle multiplexing system |
Country Status (7)
Country | Link |
---|---|
US (1) | US6272402B1 (en) |
EP (1) | EP1196310B1 (en) |
AU (1) | AU6084600A (en) |
CA (1) | CA2378015C (en) |
DE (1) | DE60025490T2 (en) |
MX (1) | MXPA02000543A (en) |
WO (1) | WO2001005629A1 (en) |
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- 2000-07-10 CA CA002378015A patent/CA2378015C/en not_active Expired - Lifetime
- 2000-07-10 DE DE60025490T patent/DE60025490T2/en not_active Expired - Fee Related
- 2000-07-10 MX MXPA02000543A patent/MXPA02000543A/en active IP Right Grant
- 2000-07-10 WO PCT/US2000/018823 patent/WO2001005629A1/en active IP Right Grant
- 2000-07-10 EP EP00947194A patent/EP1196310B1/en not_active Revoked
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---|---|---|---|---|
WO2004053602A1 (en) * | 2002-12-09 | 2004-06-24 | Rosenbauer International Aktiengesellschaft | Configurable electronic module for operation in service vehicles, in particular fire-fighting vehicles |
DE10393862B4 (en) * | 2002-12-09 | 2015-03-19 | Rosenbauer International Aktiengesellschaft | Control device for operating a service vehicle, in particular fire engine, and emergency vehicle |
US8266890B2 (en) | 2009-06-10 | 2012-09-18 | International Engine Intellectual Property Company, Llc | Preventing soot underestimation in diesel particulate filters by determining the restriction sensitivity of soot |
US11839666B2 (en) | 2020-10-19 | 2023-12-12 | The Procter & Gamble Company | Oral care article comprising a hydrophobic delivery carrier and solid hydrophilic particles comprising an agent |
Also Published As
Publication number | Publication date |
---|---|
MXPA02000543A (en) | 2006-06-23 |
CA2378015C (en) | 2006-12-12 |
AU6084600A (en) | 2001-02-05 |
DE60025490T2 (en) | 2006-09-28 |
DE60025490D1 (en) | 2006-04-06 |
CA2378015A1 (en) | 2001-01-25 |
EP1196310B1 (en) | 2006-01-11 |
US6272402B1 (en) | 2001-08-07 |
EP1196310A1 (en) | 2002-04-17 |
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