Vehicular testing system

• US 4,738,133 A
• Filed: 08/13/1986
• Issued: 04/19/1988
• Est. Priority Date: 10/31/1985
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schlienz, Ulrich, Breckel, Werner
• Primary Examiner(s): Myracle, Jerry W.
• Application Number:
  US06/896,437
• Time in Patent Office: 615 Days
• Field of Search: 340/870.28, 340/870.12, 340/870.13, 324/402, 324/390, 73/146.5, 73/117.3, 73/128, 73/129
• US Class Current: 73/114.58
• CPC Class Codes: F02P 17/00 Testing of ignition installations, e.g. in combination with adjusting testing fuel injection apparatus F02M65/00; testing ignition installations in general F23Q23/00; Testing of ignition timing in compression-ignition engines
• CPC Class Codes: G01R 31/006 on road vehicles, e.g. automobiles or trucks testing of ignition installations peculiar to internal combustion engines F02P17/00

Abstract

To permit physical separation and movement between an automotive vehicle and a test or diagnostic apparatus, the transducers transmitting signals representative of vehicle operating characteristics are coupled to a wireless transmitter, for example operating in long-wave, ultra-short-wave, infrared or ultrasonic mode; the signals are received in a wireless receiver constructed to receive the respectively transmitted signals, for application to a test or diagnostic apparatus. The system permits relative movement between the vehicle and the normally stationary diagnostic or test apparatus, for example to carry out diagnosis during movement of the vehicle.

Claims

1. Vehicle testing or diagnostic system having

a plurality of transducers (1, 2, 3) mounted on the vehicle and providing output signals representative of functioning, operability, or operating characteristics of apparatus forming part of the vehicle;

a testing apparatus (5) separate from the vehicle and forming an apparatus unit selectively responsive to the output signals from the transducers to test the functioning, operability, or operating characteristics of the vehicle apparatus transduced by the transducer,

comprising

a wireless transmitter - receiver link between the transducers (1, 2,

     3) and the test apparatus (5) including

a plurality of wireless transmitters, one each associated with a respective transducer (1, 2,

     3) receiving said output signals from the transducer,

said transmitters transmitting signals representative of information derived from said transducers in the ultra short wave range of frequencies, and

a wireless receiver (6) constructed to receive the signals transmitted by said transmitters, said receiver being coupled to the testing apparatus and providing signals representative of the transduced signals to the testing apparatus.

2. The system of claim 1, wherein the transmitters transmit the signals from the transducers in timemultiplex mode.

3. The system of claim 2, wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitters, and received by the receiver (6) is in the gigaHertz range.

4. The system of claim 1, wherein the transmitters transmit the signals from the respective transducers in frequency multiplex mode.

5. The system of claim 4, wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitter, and received by the receiver (6) is in the gigaHertz range.

6. The system of claim 1, wherein at least one transducer (1) and one transmitter (7) form a single, combined unit (7a).

7. The system of claim 1, wherein one of said transducers comprises an ignition pulse pick-up tong having the transmitter located physically on the tong structure.

8. The system of claim 1 wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitters, and received by the receiver (6) is in the gigaHertz range.

9. Vehicle testing or diagnostic system having

at least one transducer (1,2,3) mounted on the vehicle and providing output signals representative of functioning, operability or operating characteristics of apparatus forming part of the vehicle;

a testing apparatus (5) separate from the vehicle and forming an apparatus unit selectively responsive to the output signals from the at least one transducer to test the functioning, operability or operating characteristics of the vehicle apparatus transduced by the transducer,

comprising

a wireless transmitter - receiver link (7,8,9-6) between the at least one transducer (1,2,3) and the test apparatus (5) including

a plurality of transmitters (7,8,9) one each associated with the respective transducers; and

a wireless receiver (6) constructed to receive the signals transmitted by said transmitters, said receiver being coupled to the testing apparatus and providing signals representative of the transduced signals to the testing apparatus.

10. The system of claim 9, wherein at least one transducer (1) and one transmitter (7) form a single, combined unit (7a).

11. The system of claim 10, wherein one of said transducers comprises an ignition pulse pick-up tong having the transmitter located physically on the tong structure.

12. The system of claim 11 wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitters, and received by the receiver (6) is in the gigaHertz range.

13. The system of claim 10, wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitter, and received by the receiver (6) is in the gigaHertz range.

14. The system of claim 9 wherein the wireless transmitters transmit radio signals, and the frequency range of the signals transmitted by the wireless transmitters, and received by the receiver (6) is in the gigaHertz range.

15. The system of claim 9, wherein said plurality of transmitters transmit on separate channels, each having a unique transmission frequency range associated therewith to permit simultaneous transmission of signals from said plurality of transmitters.