A data logger for logging values of a physical environment parameter as a function of time includes a sampling subsystem which acquires a sequence of sample values of the physical environment parameter at sampling moments which are separated by sample intervals, an encoding subsystem which converts the sequence of sample values in data records including a representative value representing groups of one sample value or a number of successive sample values with variations which meet a stability criterion and information representative of the lengths of the groups, a memory subsystem which stores a sequence of defined data, and the data logger is arranged to determine in which range of a plurality of ranges a sample of the environment parameter is located, and to use a stability criterion for the encoding which depends on the determined range.

Examples provide a system for monitoring an open container. A set of sensors captures sensor data associated with one or more items within an open container, such as, but not limited to, a food warmer or a refrigerated/freezer display case. The set of sensors may include one or more infrared (IR) cameras. The set of sensors transmits the sensor data to a monitoring component. The monitoring component processes the sensor data to identify factor(s) associated with one or more items, such as temperature, location of the item, state changes, and freshness of the one or more items. If a factor for a given item exceeds a predetermined threshold value for that factor, the monitoring system outputs an alert notification to a user interface.

A temperature monitoring system includes an outer casing, a plurality of display elements, a plurality of buttons, a visual indicator, and a temperature sensing element. The temperature sensing element may be coupled to the outer casing and configured to sense a temperature inside a food supply unit. The temperature monitoring system continuously monitors the temperature inside of the food supply unit such as a refrigerator or steam table.

A data logger (1) for logging values of a physical environment parameter (T) as a function of time (t) includes a sampling subsystem (2), which acquires sample values (21) of the physical environment parameter (T) at sampling moments which are separated by sample intervals, an encoding subsystem (3) which defines data records representing groups of one sample value (21) or a number of successive sample values (21) with variations which meet a first stability criterion, each data record including first identifiable bits (b10-b00) defining a representative value (Trep) for the samples values (21) of the corresponding group and a second identifiable bits (b15-b12) indicating the number of samples in the corresponding group and a flag bit (b11) indicating the use of either the first or second interval length, and a memory subsystem (4) for storing the sequence of defined data records into a memory (7).

Environmental indicators for monitoring a predetermined environmental exposure, for example, an historical heat exposure such as a cumulative ambient heat exposure and/or a peak ambient heat exposure, may include an environmental indicator material. The environmental indicator may be configured to attach to a host product for monitoring the predetermined environmental exposure of the host product.

The present invention relates to a system, method, and apparatus for monitoring food products. The system includes an integrated modular sensing device for monitoring food and environmentally sensitive industrial products, including a processor, at least two interfaces in communication with the processor and adapted to receive an electronic connection of at least two temperature sensor probes, at least one sensor in communication with the processor, the at least one sensor including at least one of the following: a motion sensor, a proximity sensor, a light sensor, or any combination thereof, and a wireless communication device programmed or configured to transmit food and environmentally sensitive industrial product data to at least one of a remote server and a remote device, and act as a gateway to receive sensory data from distributed sensors wirelessly and upload to cloud databases.

Low-cost techniques for sensing ambient temperatures in a container or package using phase change materials are provided. In one aspect, a temperature sensor is provided. The temperature sensor includes: at least one phase change material configured to transition from an amorphous state to a crystalline state upon exposure to temperatures above a predetermined threshold temperature for a given duration. A method of monitoring temperature exposure of a consumer good using the temperature sensor is also provided.

A method and apparatus for automatically measuring and storing a various measured values of an item, or a sequence of measured values of one or more item(s) suitable for single-handed use by a user. In particular, the present invention relates to a mobile computing device with one or more sensors for determining when to measure and record a particular value of one or more items. The mobile computing device may automatically measure the values based on sensing a change in the temperature value or through using proximity as detected by one or more onboard sensors. Additionally, the mobile computing device may automatically measure the values based on coming within range of an external proximity device. In response to automatically measuring the values, the measured values are stored along with additional information for record keeping purposes.

Disclosed herein is a temperature condition indicator disposed upon the top surface of a lid or cap for a container or on the container or vial for a perishable product, such as a food or a drug composition. The indicator can change appearance when exposed to a temperature condition, such as a freezing event.

A refrigerator is disclosed. The refrigerator is able to store foods at a low temperature and to effectively remove bacteria of the foods stored in a storage room, to maintain the storage room clean.