Measurement method of temperature of mechanical part of wheel end of automotive vehicle and corresponding device
A motor vehicle, temperature measurement technology, applied in the direction of temperature measurement in motors, measuring devices, vehicle components, etc.
Pending Publication Date: 2021-03-30
AB SKF
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Problems solved by technology
[0015] None of these devices allow for finer temperature sensing when the temperature reaches a predetermined threshold, thereby detecting an impending thermal event, while also ensuring that the battery is conserved for the rest of the time
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Embodiment Construction
[0040] figure 1 The main steps of the measurement method of the present invention under the first embodiment are shown.
[0041] In a first step 1 the sensor measures the temperature of its attached part at an initial measurement frequency M1 and in a second step 2 broadcasts the measured temperature Tcurrent at an initial broadcast frequency B1.
[0042] In a particular embodiment, the minimum temperature Tmin since the last product reset and the maximum temperature Tmax since the last product reset are broadcast together with the last measured temperature Tcurrent. After detecting a damaged bearing, perform a reset on the product. After the damaged bearing has been replaced, the product can be fitted again on a new wheel, or remain on the old wheel. In case of reset, the memory is erased and the history of temperature measurements no longer exists.
[0043] In one embodiment, the product is a TPMS-like device fitted on a wheel rim.
[0044] In the third step 3, it is det...
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A measurement method of the temperature of a mechanical part of a wheel end, comprises the following steps: measuring the temperature of the part with a thermal sensor at an initial measurement frequency; broadcasting the measured temperature at an initial broadcast frequency; determining whether the last measured temperature is higher that a first preset temperature threshold; if so, changing initial broadcast frequency to a higher broadcast frequency and changing the initial measurement frequency to a higher measurement frequency; broadcasting the measured temperature at the higher broadcastfrequency; if not, resuming the step of measuring the temperature of the part with the thermal sensor at the initial measurement frequency; after broadcasting the measured temperature at the higher broadcast frequency, determining whether the last measured temperature is higher than the first preset temperature threshold; if so, resuming the step of performing a new measurement of the temperatureof the part at the higher measurement frequency; if not, changing the broadcast frequency to the initial broadcast frequency, and changing the measurement frequency to the initial measurement frequency, then resuming the step of measuring the temperature of the part with the thermal sensor at an initial measurement frequency.
Description
technical field [0001] The present invention relates to measuring devices and methods, in particular to measuring devices and methods for vehicles. Background technique [0002] During the braking process, a large amount of kinetic energy is converted into heat energy. While this sort of thing is less of a concern in private cars, it can still be a problem in larger vehicles such as trucks, trailers, buses or trains. [0003] In some cases, the braking of such vehicles can cause thermal events, thereby threatening the safety of the occupant and the vehicle. Thermal events have become a term synonymous with wheel end fire. [0004] Thermal events can be detected by measuring the temperature of the components involved. However, the duration of the temperature rise leading to a thermal event depends on the product. In some cases, this temperature rise can be so brief that it evades detection by currently used thermal sensors. [0005] Motor vehicles are usually equipped wi...
Claims
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IPC IPC(8): G01K1/024G08C17/02B60C23/20
CPCG01K1/024G08C17/02B60C23/20G01K3/005G01K2205/00G07C5/08G07C5/0816G01K1/14H04M1/725G07C5/008G07C5/0808G06F9/547
Inventor 肯尼斯·C·菲格利达米恩·约克努克斯夏洛特·伍
Owner AB SKF