CNPC receives patent authorization for: “An on-site control system based on segmented control logic””

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According to data from the Tianyancha app, China Petroleum (601857) has newly obtained an invention patent grant. The title of the patent is “An On-site Control System Based on Step-Control Logic”, the patent application number is CN202110809599.3, and the date of grant is October 24, 2025. Patent Abstract: The present invention discloses a local control system based on a split-control logic, which includes a central processing unit, as well as a signal acquisition unit, a temperature acquisition unit, a communication output unit, an alarm output unit, an LED display unit, and a power supply unit, all of which are connected to the central processing unit ； The signal acquisition unit performs differential sampling on the input current signal and transmits it to the central processing unit ； The temperature acquisition unit performs differential sampling on the signals collected by the temperature sensor and transmits them to the central processing unit ； The central processing unit receives the digital signals sent from the signal acquisition unit and the temperature acquisition unit, processes them to obtain the corresponding current values and temperature values, and then sends these current values and/or temperature values to the alarm output unit and the LED display unit ； The communication transmission unit receives data from the central processing unit and transmits it over a distance. This control system utilizes ADC differential technology to convert the outputs from field sensors into differential signals for on-site control, enabling it to accommodate various actuators that require direct on-site control during actual production processes.