The purpose of the engine knock sensor is to improve engine efficiency and performance by monitoring engine vibration. The engine control unit (ECU) uses this data to adjust the fuel-to-air ratio to reduce "engine crash" and correct engine timing. TI's TPIC8101 can be used as a signal conditioner for such engine knock sensors. The new solution sometimes integrates this functionality into one MCU of the engine ECU, but this means that the process may be done more remotely (due to the lower temperature rating of the microcontroller), which may result in a signal Deterioration. The performance of the TPIC8101 can be verified by looking at the extraction of the signal from the knock sensor (compared to the noise of the system). This article refers to the address: http:// Brief working principle The TPIC8101 performs signal conditioning of the knock sensor components, which are resonant piezoelectric sensor components. After passing through the input amplifier, noise is filtered out of the signal (concentrating a bandpass filter on the center frequency of the sensing element). The signal is then rectified and integrated. This output can then be transmitted digitally or via an analog signal. The ECU monitors the strength of this signal to determine when knocking occurs. Table 2 shows test data for the output signal amplitude of various frequency input signals. The bandpass filter for each device has been programmed to have a center frequency of 6.94 kHz, so input signals away from this center frequency should be suppressed. to sum up The bandpass filter is a key component of the TPIC8101. It can be easily tested and used as a benchmark comparison between two similar devices. The test data shows that the TPIC8101's bandpass filter is a good suppressor of noise and is superior to competitive products.
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CS-311S: 2+1 pockets Coin Sorter
CS-610S+PRO: 6+1 pockets coin sorter
CS-910S+: 9+1 Pockets coin sorter
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