GB2463059A - Inductively coupled engine speed monitor - Google Patents

Inductively coupled engine speed monitor Download PDF

Info

Publication number
GB2463059A
GB2463059A GB0815851A GB0815851A GB2463059A GB 2463059 A GB2463059 A GB 2463059A GB 0815851 A GB0815851 A GB 0815851A GB 0815851 A GB0815851 A GB 0815851A GB 2463059 A GB2463059 A GB 2463059A
Authority
GB
United Kingdom
Prior art keywords
engine
engine speed
monitoring device
speed monitoring
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0815851A
Other versions
GB0815851D0 (en
Inventor
Simon Victor De Banke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0815851A priority Critical patent/GB2463059A/en
Publication of GB0815851D0 publication Critical patent/GB0815851D0/en
Publication of GB2463059A publication Critical patent/GB2463059A/en
Withdrawn legal-status Critical Current

Links

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
    • B60R16/023—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
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
    • B60R16/0234—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions related to maintenance or repairing of vehicles
    • 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
    • B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/12—Recording devices
    • G01P1/122—Speed recorders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • G01P3/4807—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general by using circuits for the detection of the pulses delivered by the ignition system of an internal combustion engine
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G07C5/085—Registering performance data using electronic data carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

An engine speed monitor for mounting within the engine compartment of a vehicle comprises a means for inductively receiving a signal related to engine speed from the internal combustion engine and a means for storing the signal. The receiving means may comprise an inductive coil for attaching to a spark plug lead. The engine speed monitor may be programmed to convert the received signal into an engine speed signal as a function of the type of engine and engine sparking pattern. The device may be powered through the inductive coil, by an internal battery or from the vehicles battery. The speed monitoring device may be used to identify abusive use of the engine, mistreatment of a hire car, etc. The monitor may include other sensors such as GPS, acceleration sensor, signals from the engine management system, tamper indication, etc.

Description

Engine Speed Monitor
Field of the invention
This invention relates to monitoring engine operation and is particularly suitable during periods of vehicle hire or warranty periods for recording abuse of engines by vehicle users.
Background of the invention
Engines require a degree of!mechanical sympathy! if they are to function properly without consuming excessive oil over the course of tens or even hundreds of thousands of miles. The mechanical sympathy includes ensuring that the oil and coolant are warm before using high load, refraining from spending long periods at speeds close to the rpm limit of the engine, as well as observing the proper running in period for a newly assembled engine.
Running-in normally involves careful driving for a distance of up to 1000 miles, keeping the engine speed and load low whilst the newly installed piston rings "bed in" to the cylinder walls. This same period of gentle use is also beneficial to the drivetrain components, such as the clutch plates and transmission gears.
Failure to adhere to the running-in procedure as well as general mistreatment of a vehicle can cause premature failure of expensive components, requiring time and money to rectify. For this reason, vehicle owners tend to be strict and cautious when it comes to treatment of their vehicles.
Unfortunately, the same cannot be said for loan or hire vehicles where the owner cares little for the fate of the vehicle beyond the hire or loan period. This often results in a far higher failure rate amongst hire and loan fleets compared with privately owned cars.
The cost for the increased occurrence of repairs falls directly onto the company that owns the vehicles, the time taken to repair compounding the financial lost due to subsequent lost rental whilst the vehicle is off the road.
Additionally, vehicles still in their warranty periods are often mistreated since, in this case, their owners are keen to use the vehicle as normal and rely on the existence of the warranty as a safety net should a problem occur.
Whilst it is arguable that this is the purpose of a warranty, the warranty company stands to lose significant sums through a lack of care on the part of the warranty holder.
Until now, hire companies have done little more than request that a vehicle be treated according to the manufacturer's guidelines, equally suppliers of new cars and engines, are forced to do the same.
Some vehicle engine management systems have interfaces for attaching to personal computers. These enable the computer operator to review engine parameters seen by the engine management system. These include coolant temperature, engine oil temperature, engine speed, spark timing, fuel injection quantity to name but a few. Since modern computers have large amounts of memory available, it is possible to store this information in a log file for later review. While this would enable hire/loan companies to keep a check on the driving conditions experienced by the vehicle, cost and complexity of a personal computer makes this prohibitive for companies with large fleets of vehicles. Additionally, the personal computer would need to remain attached to the engine management system at all times while the vehicle is in use. This prevents such a solution from solving the problem at hand.
There is therefore a need to provide an inexpensive and simple method of monitoring the treatment of the vehicle when it is being operated by individuals who are not otherwise responsible for the vehicle's maintenance.
According to the present invention, there is provided A device for mounting within the engine compartment of a vehicle, for monitoring the speed of the engine, having means for receiving and logging a signal related to engine speed from the internal combustion engine wherein the means for receiving are inductively coupled to the engine.
The first means may be an inductive coil for attaching to a spark plug lead and means for processing the output signal of the inductive coil to produce an engine speed signal.
The device may be powered by an internal battery, the vehicles battery, or directly by the engine through an inductive coil.
The device may further comprise means for communicating with an external computer, by cable interface or wireless communication.
The device may further transmit vehicle identification information during communication.
Preferably the device further comprises means for opening an automatic barrier.
Advantageously the device further includes a GPS receiver and means for additionally logging vehicle speed and distance travelled.
The device may further comprise an acceleration sensor.
Brief description of the drawings
The invention will now be described further, by way of example, with reference to the accompanying drawings, in which:-Figure 1 is a schematic diagram showing the connection of the device to a spark plug lead, and Figure 2 is a representation of the circuit diagram of the device.
Detailed description of the preferred embodiment(s) The device 10 is intended to be installed under the bonnet of a motor vehicle, and connected to the engine to enable it to pick up a signal related to engine speed. This may include connecting around a spark plug lead 12, as shown in figure 1, a distributor cap (not shown) or a coil pack (not shown) . These provide a relatively easy method of monitoring a spark related signal due to the high voltage and frequency at which the spark is discharged. The quick rate of change of voltage can be picked up by a coil 14 connected to the device in which a small voltage is induced.
By monitoring when the spark is induced in the coil it is possible to determine the engine speed as described further below.
When using this method, it is necessary to programme the device in order that it may convert the signal into engine speed. For example, a car running a wasted spark ignition system will produce a spark twice for every 4 strokes of the engine, i.e. once per engine revolution, whereas a conventional ignition system sparks every other revolution. The device therefore needs to be calibrated depending on the type of ignition system, the engine to which it is connected, is operating.
The device may alternatively be connected to a crankshaft or camshaft position sensor or their associated wiring. Again, the signal produced by these depends on the engine configuration. For example, the sensors may be optical or magnetic, and the timing wheel used to generate the associated engine speed pulse varies enormously between applications. This solution is again to calibrate the device to the engine. The information required, such as the tooth pattern of the timing wheel or the cam pulley, is readily available by means of workshop manuals or the internet.
There are a number of options for powering the device which is intended to be as self contained as possible. In the event that the unit is connected to the ignition system, there is significant energy within the spark to induce a current in the coil 14. While this is indicative of the engine speed, the induced voltage may also provide enough energy to charge a battery located within the device 10, by means of a rectification circuit.
The device 10, may also be powered by a self contained battery or alternatively it may be connected to the battery of the vehicle. This is an easy option given the proximity of the device to the battery or the vehicles wiring. Since the device draws a low current, there is little danger of the vehicle battery being excessively loaded when the device is connected. With this in mind, it is possible to provide the device with a sleep mode to switch it off until a wake up signal in the form of an engine speed signal, is received. It is also possible to power the device by solar power, and a rechargeable cell, for use at night.
It is beneficial given the nature of the invention, for it to have some means of tamper prevention. This may include locating the device, within the engine, in a hard to reach position, or providing a mechanical interlock for securing the device to the engine or signal wire, which cannot be easily opened without the use of special tools. More simply, a sticker placed over a join in the casing of the device can indicate by means of tearing or damage, if the join has been separated, in order to remove the unit from the vehicle.
Turning to figure 2, the operation of the device will be explained with reference to a flow chart representing the circuit diagram.
Device 10 includes a sensor input 14. This may be a coil in close proximity to a high tension spark leak or ignition system lead 12, as shown in figure 1.
Alternatively, the device 10 may be connected to the signal wires joining the crank or cam position sensors to the engine management system (not shown), directly to the sensors, or to their input into the engine management system (not shown) The sensor input 14 feeds its signal (either induced or measured voltage) into a pulse shaping circuit 16. The pulse shaping circuit 16 produces a more easily recognised output such a square wave, which enables pulses to be more accurately counted.
The square wave signal is then fed from the pulse shaping circuit 16 into a pulse repetition frequency circuit (PRF) 18. This acts like a bucket collecting the square wave pulses from the pulse shaping circuit 16 until it is told to stop and start again by a microcomputer 20. The micro-computer 20 can then determine how many pulses have been counted in a given time frame, for example, a second, after which time PRF 18 is instructed to empty and start counting again.
The micro-computer 20 consists of a microprocessor 22, a clock 24, EPROM 26 and RAM 28. It is programmed, depending on the vehicle to which it is fitted and the manner in which it is connected (to the ignition system or to the engine's own rpm measurement system) . The information with which it is programmed enables the micro-computer to determine the speed of the engine from the square wave pulses counted by the PRF 18 in a given period.
This data is then fed to a Keep Alive Memory (KAM) 30.
The information stored may be raw data, or sorted data in the form of the amount of time spent in a chosen speed range, for example 500>1000, 1001>1500 7501>8000 rpm in as many increments as is necessary or limited by the memory capacity of the hardware.
Data stored in the KAM can be accessed by interfacing the device 10 with a personal computer when the vehicle is returned to the lender, or the supplying garage. The simple provision of a USB interface allows the stored data to be downloaded. It may be necessary to provide a secure connection to the device to prevent unauthorised access to the data, and to reduce data tampering. With this in mind, it is preferable if the device is installed in such a way as to make its removal as difficult as possible without leaving tell tale sounds The micro-computer 20 also includes outputs to radio transmitters using, but not limited to blue tooth 32 or WLan 34 protocols. This enables the data stored in the KAM 30 to be readily accessed without manually connecting to the device 10.
The micro-computer 20 can receive further inputs from a GPS receiver 36 and a G-sensor 38. These provide information to be stored in the KAM 30 relating to distance travelled and speeds attained. Both of these inputs may provide further evidence of abuse when in the hands of the borrower of the vehicle. The maximum speed reached and their associated date and time are also useful in showing who is to blame in the event that automatic speeding tickets are issued through the post subsequent to the vehicle being returned to its place of hire.
Additionally, the device 10 may include an automatic barrier transponder 40. This enables the vehicle to be returned through security gates to a vehicle hire location such as in a dedicated area of an airport car park. The gates are typically used to prevent unauthorised vehicles occupying reserved parking spaces. By transmitting identifying information to the barrier's receiver when returning to the rental location, the system is also able to automatically log the return of the vehicle, speeding up the return process and reducing the number of staff needed.
In a preferred embodiment, several other features provide distinct advantages. These include an integral display connected to the micro-computer 20 to output key information to further save time. For example, in the event that a threshold of abuse level is not reached, an LCD display or a simple LED can display an WOK or a "green" signal to suggest that there is no need to waste further time downloading the contents of the KAM 30. Similarly an audible alarm tone may be emitted in the event that abuse is detected.
It would be further beneficial to extend the data input to the device by interfacing with the vehicle's engine management system wiring loom. This may enable monitoring of throttle position, brake input, steering input, wheel speed sensors and many more depending on the equipment fitted to the vehicle and the signals transmitted to the engine management system.

Claims (15)

  1. Claims 1. A device for mounting within the engine compartment of a vehicle, for monitoring the speed of the engine, having means for receiving and logging a signal related to engine speed from the internal combustion engine wherein the means for receiving are inductively coupled to the engine.
  2. 2. An engine speed monitoring device as claimed in claim 1, wherein the means for receiving is an inductive coil for attaching to a spark plug lead.
  3. 3. An engine speed monitoring device as claimed in any preceding claim, wherein the device is programmed to convert the signal into an engine speed signal as a function of the type of engine.
  4. 4. An engine speed monitoring device as claimed in any preceding claim, wherein the device is powered by an internal battery.
  5. 5. An engine speed monitoring device as claimed in claims 1 to 3, wherein the device is powered by the vehicle's battery.
  6. 6. An engine speed monitoring device as claimed in claims 1 to 3, wherein the device is powered by the engine through an inductive coil.
  7. 7. An engine speed monitoring device as claimed in any preceding claim, further comprising means for communicating with an external computer.
  8. 8. An engine speed monitoring device as claimed in claim 7, wherein communication is effected by means of a cable interface.
    -10 -
  9. 9. An engine speed monitoring device as claimed in claims 7 and 8, wherein information identifying the vehicle to which the device is fitted is transmitted during communication.
  10. 10. An engine speed monitoring device as claimed in any preceding claim, further comprising means for opening an automatic barrier.
  11. 11. An engine speed monitoring device as claimed in any preceding claim, further comprising a GPS receiver and means for logging vehicle speed and distance travelled.
  12. 12. An engine speed monitoring device as claimed in any preceding claim, further comprising a G-sensor.
  13. 13. An engine speed monitoring device as claimed in any preceding claim, further comprising means for displaying an indication of abusive use of the engine.
  14. 14. An engine speed monitoring device as claimed in any preceding claim, further comprising means for indicating if the device has been tampered with.
  15. 15. An engine speed monitoring device substantially as herein described with reference to and as illustrated in the accompanying drawings.
GB0815851A 2008-09-01 2008-09-01 Inductively coupled engine speed monitor Withdrawn GB2463059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0815851A GB2463059A (en) 2008-09-01 2008-09-01 Inductively coupled engine speed monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0815851A GB2463059A (en) 2008-09-01 2008-09-01 Inductively coupled engine speed monitor

Publications (2)

Publication Number Publication Date
GB0815851D0 GB0815851D0 (en) 2008-10-08
GB2463059A true GB2463059A (en) 2010-03-03

Family

ID=39866023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0815851A Withdrawn GB2463059A (en) 2008-09-01 2008-09-01 Inductively coupled engine speed monitor

Country Status (1)

Country Link
GB (1) GB2463059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20100103A1 (en) * 2010-05-12 2011-11-13 Advanced Microwave Engineering S R L DEVICE FOR ON-BOARD DEVICES TO CARRY OUT THE RECOGNITION OF THE STATE OF THE VEHICLE IN AUTOMATION SYSTEMS - IDENTIFICATION FOR VEHICLE WAYS, AND ASSOCIATED METHOD.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183328A (en) * 1966-03-23 1970-03-04 Dunedin Instrumentation Ltd Device for Measuring the Speed of a Spark Ignition Internal Combustion Engine
US4093939A (en) * 1976-02-18 1978-06-06 Transputer (Proprietary) Limited Accessory for a vehicle for monitoring its operation and that of its drive means
DE3920385A1 (en) * 1989-06-22 1991-01-03 Preh Elektro Feinmechanik Monitoring vehicle operating parameter, e.g. distance covered - deriving values indirectly in case direct sensor is disables, e.g. in hire car
US5151654A (en) * 1988-07-06 1992-09-29 Systems Control, Inc. Tachometer system for measuring the RPM of an internal combustion engine with no physical or visual connection
US5337003A (en) * 1992-12-28 1994-08-09 Carmichael Edward W Self-contained, clip-on engine operating time log
US5644491A (en) * 1994-01-31 1997-07-01 Sendec Corporation Self contained multi-function engine monitor and timer for providing engine running time, job time, service time and tachometer functions
US20040133394A1 (en) * 2003-01-06 2004-07-08 David Huang Tachometer
US20040225557A1 (en) * 2003-05-06 2004-11-11 Joseph Phelan Motor vehicle operating data collection and analysis

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183328A (en) * 1966-03-23 1970-03-04 Dunedin Instrumentation Ltd Device for Measuring the Speed of a Spark Ignition Internal Combustion Engine
US4093939A (en) * 1976-02-18 1978-06-06 Transputer (Proprietary) Limited Accessory for a vehicle for monitoring its operation and that of its drive means
US5151654A (en) * 1988-07-06 1992-09-29 Systems Control, Inc. Tachometer system for measuring the RPM of an internal combustion engine with no physical or visual connection
DE3920385A1 (en) * 1989-06-22 1991-01-03 Preh Elektro Feinmechanik Monitoring vehicle operating parameter, e.g. distance covered - deriving values indirectly in case direct sensor is disables, e.g. in hire car
US5337003A (en) * 1992-12-28 1994-08-09 Carmichael Edward W Self-contained, clip-on engine operating time log
US5644491A (en) * 1994-01-31 1997-07-01 Sendec Corporation Self contained multi-function engine monitor and timer for providing engine running time, job time, service time and tachometer functions
US20040133394A1 (en) * 2003-01-06 2004-07-08 David Huang Tachometer
US20040225557A1 (en) * 2003-05-06 2004-11-11 Joseph Phelan Motor vehicle operating data collection and analysis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20100103A1 (en) * 2010-05-12 2011-11-13 Advanced Microwave Engineering S R L DEVICE FOR ON-BOARD DEVICES TO CARRY OUT THE RECOGNITION OF THE STATE OF THE VEHICLE IN AUTOMATION SYSTEMS - IDENTIFICATION FOR VEHICLE WAYS, AND ASSOCIATED METHOD.

Also Published As

Publication number Publication date
GB0815851D0 (en) 2008-10-08

Similar Documents

Publication Publication Date Title
US12056966B2 (en) Telematically monitoring a condition of an operational vehicle component
US11182988B2 (en) System for telematically providing vehicle component rating
US11367033B2 (en) Fleet vehicle management systems and methods
US8558678B2 (en) Method and systems for detecting an unauthorized use of a vehicle by an authorized driver
US9159175B2 (en) Method for data communication between a vehicle and fuel pump
US8620515B2 (en) Intelligent fleet management system and method
JP3442397B2 (en) Vehicle running data recording device
CN109641569A (en) Vehicle remote control apparatus
CN202221593U (en) Travelling data recorder, vehicle travelling data recording system and new energy vehicle
CA2494350A1 (en) Module for monitoring vehicle operation through onboard diagnostic port
CN103700160A (en) Motor vehicle onboard terminal based on microsensor and driving behavior judgment method
CN101434221A (en) Vehicle fault diagnosis equipment
EP1355278A1 (en) A computerized system for managing motor-vehicle maintenance
CN107124343A (en) A kind of OBD car networkings terminal
CN103085760A (en) Intelligent driver confirmation system applied to motor vehicle
CN202863391U (en) Driver smart identifying system used for automobile
EP0129949A2 (en) Vehicle monitoring system
RU2739959C2 (en) Vehicle identification and recognition system based on voltage profile of onboard electrical system and corresponding identification method carried out by such system
US20200160407A1 (en) Server apparatus and information providing method
CN201842089U (en) Device and system for remote automobile diagnosis and automobile
GB2463059A (en) Inductively coupled engine speed monitor
EP1961630B1 (en) Detection device for vehicles
CN205327008U (en) New energy automobile burglar alarm
CN100395686C (en) Vehicle running state recording method and computer for engine control
US20200159199A1 (en) Server apparatus and information providing method

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)