Abstract: A method and system to detect a plurality of device activities of a device using a device activity monitoring system has been described. The device monitoring activity system includes a vibration sensor in electronic communication with the device to detect vibration of the device. An interrupt counter in communication with the vibration sensor to measure a count of vibration detected by the vibration sensor within a pre-determined period. A storage unit in electronic communication with the interrupt counter to store the count of vibration. A controller in electronic communication with the vibration sensor and the storage unit to determine a mapping between the measured count and one of the plurality of device activities. A transmitter in electronic communication with the controller to autonomously transmit an output signal when the controller determines the mapped one of the plurality of device activities.

Abstract: A method to remotely program an inventory management device to measure usage of material has been described. The method comprises receiving a material specific software at the inventory management device. A controller at the inventory management device executes, the received material specific software. Based on the execution, the inventory management device measures the usage of material by the one or more sensors included in the inventory management device.

Abstract: An inventory management device to measure usage of sheets in a roll has been described. The inventory management device includes a resistive sensor in physical communication with a sheet in the roll that measures a resistance value between the resistive sensor and the sheet. The inventory management device includes a vibration sensor in electronic communication with the resistive sensor to generate a vibration signal that corresponds to a vibration of the roll. The inventory management device includes a storage unit in electronic communication with the resistive sensor to store the resistance value. The inventory management also includes a controller in electronic communication with the resistive sensor and storage unit to measure a change in the resistance value.

Abstract: A method and system to detect a plurality of device activities of a device using a device activity monitoring system has been described. The device monitoring activity system includes a vibration sensor in electronic communication with the device to detect vibration of the device. An interrupt counter in communication with the vibration sensor to measure a count of vibration detected by the vibration sensor within a pre-determined period. A storage unit in electronic communication with the interrupt counter to store the count of vibration. A controller in electronic communication with the vibration sensor and the storage unit to determine a mapping between the measured count and one of the plurality of device activities. A transmitter in electronic communication with the controller to autonomously transmit an output signal when the controller determines the mapped one of the plurality of device activities.

Abstract: An inventory management device to monitor a volume of a material in a container may generally include a capacitive level sensor to measure a first capacitance value and a second capacitance value; a vibration sensor in electronic communication with the capacitive level sensor to generate a vibration signal that corresponds to a vibration of the container; a storage unit in electronic communication with the capacitive level sensor to store the first capacitance value; a controller in electronic communication with the capacitive level sensor and storage unit to measure a change in the capacitance between the first capacitance value and second capacitance value; a transmitter in electronic communication with the controller to transmit an output signal when the controller measures the change in capacitance; and a flexible battery to power the capacitive level sensor, vibration sensor, storage unit, controller, and transmitter.