Bendix Commercial Vehicle Systems LLC

Pratima Vishwakarma

Tandi Wijaya

Amit Babalal Nahar

Michael D Cremona

Akshay Mishra

Dattatray Jadhav

Daniel Peter Zula

Thomas J Hayes

Khoi M Dang

Kritika Singhvi

Mangesh Bhaginath Dhakane

A system and method are disclosed for power line communication (PLC) signal data body encoding using differential phase detection. In one embodiment, if a preamble section of the PLC signal is too noisy, instead of attempting to read the actual signal in a data section of the PLC signal, a differential phase detection circuit is used to detect a phase difference between two symbols in the data section, as phase detection is less susceptible to noise.

System and method for power line communication (PLC) signal data body encoding using differential phase detection

A system for demodulating and decoding a data body in a message transmitted along a vehicle power line is provided. First and second logic symbols in the data body include distinctive positive and negative peaks, respectively, assuming maximum positive and negative amplitudes for the data body. A peak detector circuit receives the data body and generates a peak indicator signal indicating each time the data body reaches a positive or negative peak having an amplitude equal to or greater than the previous largest positive or negative amplitude in the data body. A sampling circuit generates a data signal responsive to the peak indicator signal. The sampling circuit ignores portions of the peak indicator signal occurring prior to an indication of one of the distinctive positive and negative peaks and the data signal assumes values indicative of the distinctive positive and negative peaks in the peak indicator signal.

System and method for demodulation and decoding a data body of a power line communication

A system for demodulating and decoding received messages transmitted along a vehicle power line includes a reference signal generator, a timer, and a demodulation and decoding circuit. The circuit determines whether a message is present on the power line by identifying a symbol indicative of a message preamble, subsequently setting the timer to a time corresponding to a predetermined length of the message preamble, detecting, during the time, a plurality of symbols and determining whether the symbols indicate the presence of a message preamble. The circuit then extracts data from the message by activating the reference signal generator, adding the reference signal to the message to produce an equivalent signal, detecting a symbol in the equivalent signal indicative of the message data body, subsequently setting the timer to a time corresponding to a predetermined length of the message data body and detecting, during the time, a second plurality of symbols.

System and method for demodulation and decoding of power line communications

A tamper detection system for a controller includes a housing, a circuit board mounted in the housing, a voltage input line on the circuit board receiving an operating voltage, a light detection circuit mounted on the circuit board receiving the operating voltage from the voltage input line and a signal conditioning device conditioning the operating voltage and connected to the light detection circuit. The light detection circuit interrupts the operating voltage at the signal conditioning device in response to detecting a source of light having a light value greater than a threshold.

Tamper detection system

Growing community of inventors

Pune, India

Pratima Vishwakarma