Abstract: A method and apparatus for wireless transmission of data through a communications channel between at least two local data sensors (for example automotive diagnostic data sensors or NVH sensors), which may include a primary data-processing function, and data-processing function (for example a PC) to receive data therefrom. The system provides for asymmetrical division of the communications channel on a frequency or time-division or packet-switching basis so that the corresponding asymmetrical data transmission requirement of the local data sensors are matched to the capacity of their respective sub-channels whereby a single channel is capable of transmitting all the required data. A particularly practical application is to noise vibration harshness analysis of wireless-transmitted data from three-dimensionally spaced NVH sensors enabling spacial pinpointing of vibration sources in automotive warranty analysis studies.

Abstract: A method and apparatus for wireless transmission of data through a communications channel between at least two local data sensors (for example automotive diagnostic data sensors or NVH sensors), which may include a primary data-processing function, and data-processing function (for example a PC) to receive data therefrom. The system provides for asymmetrical division of the communications channel on a frequency or time-division or packet-switching basis so that the corresponding asymmetrical data transmission requirement of the local data sensors are matched to the capacity of their respective sub-channels whereby a single channel is capable of transmitting all the required data. A particularly practical application is to noise vibration harshness analysis of wireless-transmitted data from three-dimensionally spaced NVH sensors enabling special pinpointing of vibration sources in automotive warranty analysis studies.

Abstract: A method and apparatus for mounting an acoustic emitter or detector of other sensor apparatus with respect to mounting structure therefor and so as to be isolated at least partially with respect thereto from the transmission of acoustic and/or electrical energy. The mounting provides a non-elastomeric snap-together bushing formed of a plastics material which accurately positionally locates the sensor or emitter with respect to its mounting while providing an unexpectedly high degree of isolation with respect to transmission of acoustic and other energy forms through the mounting.

Abstract: Method and apparatus for battery evaluation and classification applies transient microcharge and/or microload pulses to an automotive battery. Classification is made on the basis of analysis of the resultant voltage profile or portions or dimensions thereof. In one embodiment the analysis utilizes a neural network or algorithm to assess a microcycle sequence of microload/microcharge tests utilizing one of a series of battery parameters including impedance as well as voltage characteristics to effect classification. Another embodiment adopts an optimized (not maximum) level of prior test-based data-training for a self-organizing neural network. A third embodiment utilizes prior test data correlation to enable algorithm-based classification without use of a neural network.

Abstract: A method and apparatus for automotive testing comprises a base station and at least two handsets adapted to provide a testing function in at least two corresponding technically distinct areas. Embodiments employ Kelvin connectors and/or Hall effect probes and/or induction probes. System operation is effected by the simplest and minimum number of control commands.

Abstract: Vehicle thermal testing method and apparatus is based upon the use of a mobile handset. The handset uses spot infra red thermal sensing to identify thermal imbalance between wheels on opposite sides or the same side of a vehicle. Testing identifies thermal levels resulting from braking by mere application of the handset to wheel nuts after a short brake application and without use of roller test beds or other such equipment. Tires can be similarly tested. The handset can generate test instructions. Repetition of an initial test enables the offset for cooling during the test to be verified. A similar technique applies to tires. The handset may communicate with a base station providing for keyboard input of vehicle data and results printout.

Abstract: A method and apparatus for determining tire pressure in automotive vehicles utilices twin spaced parallel and non-transverse piezoelectric cables which are traversed by a vehicle to produce a voltage pulse having a shapes or profiles characteristic of the tire pressure. Waveform analysis on the basis of a software algorithm and/or look-up calibration data enables numerical pressure determination. The system is well adapted for remote automotive vehicle tire pressure sensing under normal conditions of vehicle use.

Abstract: A method of testing applicable to the routine testing of batteries for automotive vehicles and like batteries is described. The method comprises: providing a battery to be tested; providing a test electrical load for connection to the battery; providing a control circuit to connect the load to the battery for an interval of less than one second; and providing analysis means to analyze the battery's reaction to said load.

Abstract: Method and apparatus for automotive tire condition and other article assessment is based upon radiation analysis of a rotated tire. Analysis of reflected radiation on the basis of intensity sensing provides a measure of tread depth and sidewall profile, together with tread location and other data. By positional analysis of the tread depth locations there is provided complementary information on the tread wear pattern. Sidewall profile determination enables identification of other tire condition factors. Tread depth and sidewall profile are also determined by laser or other radiation line image displacement techniques and a mounting system is provided for the apparatus enabling determinations to be made without the use of a roller bed. Proper positional alignment of the wheel to the apparatus is determined by means of a reference datum derived from reflected radiation within the apparatus.