The present invention provides a system and apparatus for monitoring temperature and airflow from multiple sensors node for maintaining proper conditions within a refrigerated tractor-trailer unit or reefer. The system provides a mesh network of multiple sensors, which communicate between sensors and with a processing unit of a reefer unit for monitoring the condition of transported goods.

A flow meter ultrasonically measures fluid velocity in a pipe and ultrasonically transmits fluid flow data along the pipe. An ultrasonic transducer used for fluid velocity measurement may optionally also be used for communication of flow data, and optionally, the ultrasonic frequency for fluid velocity measurement may be the same as the ultrasonic frequency for communication of flow data.

Fluid supply, monitoring and control system from LPG supply vehicles to tank trucks, the vehicle has a LPG liquid level gauger, an output line over which it is located in a fluid way a solenoid valve which allows or cuts the LPG flow besides of a flowmeter which measures the amount that flows through the said output line, a fluid coupled hose to the said output line with a connector which allows to safely couple to a stationary tank; the system also includes the use of a mobile computer device, a central that has at least one desktop computer device connected to a WIFI data network of mobile phone data network with which it communicates with the mobile device. The said level gauge is electronically coupled to a first manager which includes an electronic card, a processor, as well as the first antenna which allows to send data via Bluetooth to the mobile computer device; the said solenoid valve is electronically coupled to a second manager which includes an electronic card, a processor, energizing means or to re-energize the solenoid valve as well as a second antenna which allows to receive and send data via Bluetooth to the mobile computer device; besides, the said flowmeter is electronically coupled to a third manager which includes an electronic card, a processor, as well as a third antenna which allows to send data via Bluetooth to the mobile computer device; where the mobile computer device receives information from the level gauge and flowmeter which compares at all times when LPG is been delivered, can also send the encrypted instruction to open or close the solenoid valve, according to the collates of the data received from the sensors and the geographical location of the mobile computer device.

Fluid supply, monitoring and control system from LPG supply vehicles to tank trucks, the vehicle has a LPG liquid level gauger, an output line over which it is located in a fluid way a solenoid valve which allows or cuts the LPG flow besides of a flowmeter which measures the amount that flows through the said output line, a fluid coupled hose to the said output line with a connector which allows to safely couple to a stationary tank; the system also includes the use of a mobile computer device, a central that has at least one desktop computer device connected to a WIFI data network of mobile phone data network with which it communicates with the mobile device. The said level gauge is electronically coupled to a first manager which includes an electronic card, a processor, as well as the first antenna which allows to send data via Bluetooth to the mobile computer device; the said solenoid valve is electronically coupled to a second manager which includes an electronic card, a processor, energizing means or to re-energize the solenoid valve as well as a second antenna which allows to receive and send data via Bluetooth to the mobile computer device; besides, the said flowmeter is electronically coupled to a third manager which includes an electronic card, a processor, as well as a third antenna which allows to send data via Bluetooth to the mobile computer device; where the mobile computer device receives information from the level gauge and flowmeter which compares at all times when LPG is been delivered, can also send the encrypted instruction to open or close the solenoid valve, according to the collates of the data received from the sensors and the geographical location of the mobile computer device.

A liquid product distribution network includes a container distribution monitoring and reporting apparatus associated with a container. The apparatus includes a radio transmitter device and sensing circuitry for sensing and communicating physical properties associating with the container. The apparatus includes a battery power supply unit fitted within and protected by the top or bottom chime. The apparatus further includes a unique identifier associated with the sensing and reporting device. The apparatus further includes a mobile communications device is configured to identify the container based on the unique identifier associated with the sensing and reporting device embedded therein, and receive and process the radiofrequency signals from the radiofrequency signal transmission circuitry of the identified container passively and without user interaction, for monitoring the physical properties and location of the container.

A liquid product distribution network includes a container distribution monitoring and reporting apparatus associated with a container. The apparatus includes a radio transmitter device and sensing circuitry for sensing and communicating physical properties associating with the container. The apparatus includes a battery power supply unit fitted within and protected by the top or bottom chime. The apparatus further includes a unique identifier associated with the sensing and reporting device. The apparatus further includes a mobile communications device is configured to identify the container based on the unique identifier associated with the sensing and reporting device embedded therein, and receive and process the radiofrequency signals from the radiofrequency signal transmission circuitry of the identified container passively and without user interaction, for monitoring the physical properties and location of the container.

A sensor device includes an excitation magnet which generates an alternating excitation magnetic field, an energy generator having a pulse wire module in which electric energy pulses are generatable via the alternating excitation magnetic field, at least one sensor element which senses a physical variable and which provides a sensor signal, an evaluation unit which evaluates the sensor signal, and a wireless data interface which is connected to the evaluation unit via a data connection. The at least one sensor element and the evaluation unit are each electrically connected to the energy generator and are suppliable with an electric energy thereby.

A sensor device includes an excitation magnet which generates an alternating excitation magnetic field, an energy generator having a pulse wire module in which electric energy pulses are generatable via the alternating excitation magnetic field, at least one sensor element which senses a physical variable and which provides a sensor signal, an evaluation unit which evaluates the sensor signal, and a wireless data interface which is connected to the evaluation unit via a data connection. The at least one sensor element and the evaluation unit are each electrically connected to the energy generator and are suppliable with an electric energy thereby.

The embodiments of the present disclosure provide a method for predicting gas transmission loss of smart gas, implemented by a smart gas equipment management platform of an Internet of Things (IoT) system for predicting gas transmission loss of smart gas, comprising: obtaining gas flow data, gas pressure data, and ambient temperature data of a plurality of time points respectively based on gas metering devices, pressure detection devices, and temperature monitoring devices at a plurality of positions of a gas pipeline network; predicting a gas metering error based on the ambient temperature data; determining whether gas loss is abnormal loss based on the gas flow data, the gas pressure data, and the gas metering error; and in response to a determination that the gas loss is the abnormal loss, sending a warning notice.

The embodiments of the present disclosure provide a method for predicting gas transmission loss of smart gas, implemented by a smart gas equipment management platform of an Internet of Things (IoT) system for predicting gas transmission loss of smart gas, comprising: obtaining gas flow data, gas pressure data, and ambient temperature data of a plurality of time points respectively based on gas metering devices, pressure detection devices, and temperature monitoring devices at a plurality of positions of a gas pipeline network; predicting a gas metering error based on the ambient temperature data; determining whether gas loss is abnormal loss based on the gas flow data, the gas pressure data, and the gas metering error; and in response to a determination that the gas loss is the abnormal loss, sending a warning notice.