The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1978
Filed:
Nov. 17, 1976
Arliss Eugene Whiteside, Royal Oak, MI (US);
The Bendix Corporation, Southfield, MI (US);
Abstract
A data transmission system using analog to pulse width to digital conversion for transmitting data generated by an analog sensor to a digital processor is disclosed. A data request signal generated by the digital processor is gated by a processor interface circuit along a single wire data transmission line to a remote sensor activating both the sensor and its associated interface electronics. The data request signal also provides electrical power to the sensor and sensor interface electronics eliminating the need for separate electrical power leads. The sensor interface electronics after a period of time determined by the value of the analog signal generated by the sensor generates a low impedance to ground signal on the data transmission line. The low impedance to ground signal is detected by the processor interface circuit which terminates the transmission of the data request signal. The processor interface circuit further includes a pulse width to digital converter generating digital data indicative of the duration the data request signal is transmitted. More than one sensor may interface the single data transmission line and each sensor interface may be individually activated by interrogation signals generated by the digital processor.