Carrier Corporation

Aryn Shapiro

Gilbert B Hofsdal

Daniel L Waser

David V Soergel

Hans-Joachim Huff

Lucy Yi Liu

Thomas L DeWolf

Phani Pavan Kumar Mangaiahgari

KeonWoo Lee

Jian Sun

Cheryl M Keiling

William C Silliman

Wenhua Li

Mingfei Gan

Doug Schiffer

Tony Lu

Wei Wu

Thomas Dewolf

Systems and methods for testing circuit operations are provided. Aspects include a circuit comprising a power source, a switching element, and a load. A sensing element is arranged between the switching element and the load and the sensing element is communicatively coupled to a microcontroller, wherein the microcontroller is configured to perform a diagnostic operation for the circuit comprising obtaining, from the sensing element, first sensor data associated with the load responsive to operating the switching element, wherein the first sensor data comprises electrical values associated with the load, obtaining, from the sensing element, second sensor data associated with an output of the switching element, wherein the second sensor data comprises electrical values associated with the output of the switching element, and analyzing the first sensor data and the second sensor data to determine a fault condition for the circuit.

Self validation of controller internal circuits

A cargo-neutral climate control diagnostic system for a climate controlled mobile container includes a controller configured and disposed to be connected to one or more climate control components. The controller is configured and disposed to identify a cargo-neutral test opportunity and conduct a test to determine an operational state of the one or more climate control components of the climate controlled mobile cargo container while maintaining a desired environment.

Cargo-neutral testing of container during mode transition

A computer-implemented method and system for controlling remote access to a computer system is disclosed. A method includes generating a secret value at a first computer system; sharing the secret value with associated computer systems; choosing a time length for validity; computing a derived key based on the secret value; and controlling remote access to the computer system based on the derived key and a unique identifier associated with the first computer system.

Wireless communication with non-networked controllers

A transport refrigeration system including a method for fault tolerant power management. The system includes a first sensor identified as required for operation of the transport refrigeration system and a second sensor operable as a backup for the first sensor. The system also includes a first power supply operably connected to the first sensor and configured to operate the first sensor and a second power supply operably connected to the second sensor and configured to operate the second sensor. The system further includes a controller operably connected to at least the first power supply as well as the first sensor and the second power supply as well as the second sensor, the controller configured to monitor at least the first power supply and the second power supply, if a fault is detected in the first power supply, operate the transport refrigeration system from the second sensor.

Power distribution for end-point failure detection and recovery for a transport refrigeration system

A refrigeration system includes a compressor having a first stage and a second stage; a heat rejecting heat exchanger including an inter-cooler and a gas cooler, the intercooler coupled to an outlet of the first stage and the gas cooler coupled to an outlet of the second stage; an unload valve coupled to an outlet of the intercooler and a suction port of the first stage; a flash tank coupled to an outlet of the gas cooler; a primary expansion device coupled to an outlet of the flash tank; a heat absorbing heat exchanger coupled to an outlet of the primary expansion device, an outlet of the heat absorbing heat exchanger coupled to the suction port of the first stage; and a controller for executing a startup process including controlling the unload valve to direct refrigerant from the intercooler to the suction port of the first stage.

Startup logic for refrigeration system

Growing community of inventors

Syracuse, NY, United States of America

Aryn Shapiro