Invention Grant
- Patent Title: Temperature sensing circuit for transmitting data across isolation barrier
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Application No.: US15419349Application Date: 2017-01-30
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Publication No.: US10656026B2Publication Date: 2020-05-19
- Inventor: Charles E. Green
- Applicant: Emerson Climate Technologies, Inc.
- Applicant Address: US OH Sidney
- Assignee: Emerson Climate Technologies, Inc.
- Current Assignee: Emerson Climate Technologies, Inc.
- Current Assignee Address: US OH Sidney
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: G01K7/24
- IPC: G01K7/24

Abstract:
An isolated temperature sensing system includes a thermistor that measures a temperature of a compressor system. An isolation circuit charges a capacitor, sets an output signal to a first state during charging of the capacitor, discharges the capacitor to the thermistor, and sets the output signal to a second state during discharging of the capacitor to the thermistor. The first state is different than the second state. A control module receives the output signal via an isolation barrier and determines the temperature of the compressor system based on a ratio of: (i) a first period that the output signal is in the first state to (ii) a second period that the output signal is in the second state.
Public/Granted literature
- US20170299444A1 Temperature Sensing Circuit For Transmitting Data Across Isolation Barrier Public/Granted day:2017-10-19
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