초록 ▼

A sensor correction circuit uses a programmable read only memory (PROM) for storing characterizing information for an associated sensor or transducer. The information is stored in the 1×2048 bit configuration. The programmable read-only memory (PROM) has its parallel outputs connected to correspondi

A sensor correction circuit uses a programmable read only memory (PROM) for storing characterizing information for an associated sensor or transducer. The information is stored in the 1×2048 bit configuration. The programmable read-only memory (PROM) has its parallel outputs connected to corresponding inputs of a 2048 bit shift register. The programmable read-only memory and the shift register are located in an electronic circuit housing, along with a power supply and sensor signal handling electronics, attached to the sensor structure to form an integral package therewith. An isolation interface is mounted on the housing and is connected between the circuit within the housing and an external data processing and interrogating system which may include a microprocessor. The programmable read-only memory is used to store sensor characterizing information for providing sensor correction data to the microprocessor controlled data processing system and to supply this information upon demand by the data processing system to the shift register for read-out through the isolation interface to the interrogating data processing system. The isolation interface may include signal isolators used to transmit the signals for controlling the programmable read-only memory and the shift register and for supplying power to the power supply to energize the shift register and the sensor signal handling electronics.

대표청구항 ▼

A sensor correction circuit comprising: a process variable sensor means, a programmable read-only memory for storing a predetermined number of digital data bits in respective data storage cells, a shift register having a plurality of digital bit storage stages at least equal in number to the number

A sensor correction circuit comprising: a process variable sensor means, a programmable read-only memory for storing a predetermined number of digital data bits in respective data storage cells, a shift register having a plurality of digital bit storage stages at least equal in number to the number of data bits stored in said memory, an output terminal, and a clock signal input terminal, first circuit means for connecting each of said storage cells to a respective one of said storage stages, clock signal means for connecting said clock signal input terminal to a source of clock signals, output means, second circuit means for connecting said output terminal to said output means, and housing means for enclosing said sensor means, said memory, said register, said clock signal means and said first and second circuit means while allowing access to said clock signal means, said output means and said sensor means.