Carrier Corporation

Daniel L Waser

Deborah A Champagne

Aryn Shapiro

Mark G Fragnito

John F Hannon

Kevin F Dudley

Thomas L DeWolf

Gilbert B Hofsdal

William C Silliman

John D Ward, Jr

Paul Stoddard

Thomas Dewolf

Breet A Desmaraid

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 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 security monitor system for a transport unit is provided. The security monitor system may include at least one security sensor configured to detect a fault condition, and a controller having a plurality of inputs, a plurality of outputs, and a low power control circuit. The low power control circuit may provide electrical communication between a battery of the transport unit, the security sensor, and at least one of the inputs of the controller. The control circuit may be configured to maintain the controller in low power mode when there are no detected fault conditions, and to enable power to the controller when there is a detected fault condition.

Transport refrigeration security system

A control device having a graphical user interface for controlling the operation of a transport refrigeration unit is disclosed. The graphical user interface may include a menu structure having multiple levels of menu options, executable functions and data items that may be navigated and viewed by a user. Access to the various menus may be user-specific and controlled so that a subset of the information in the menu structure is available to normal users, and larger subsets of the information are available to advanced users having higher levels of authorization to the menus and information contained in the graphical user interface device. The graphical user interface may also include programmable soft keys that may take users directly to frequently viewed menu options, functions and data items without the necessity of navigating through the levels of the menu structure.

Programmable customized user interface for transport refrigeration units

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Liverpool, NY, United States of America

Daniel L Waser