Smart device for gas range

A smart device in serial connected to a gas supply pipeline of a commercial or residential gas range to have a capability of connecting to mobile devices via wired or wireless network, which can be utilized to metering a gas flow rate, to alert the connected mobile device, and to execute termination of the gas supply by the connected mobile device or automatically in a pre-set or pre-programmed period of time comprising:

• A micro-machined or MEMS silicon mass flow sensor and a metrology electronics attached to the MEMS silicon mass flow sensor having a capability of metering fuel gas mass flow rate in a large dynamic range with a particular sensitivity for tracing fuel gas flow rate as well as the thermal property values of fuel gas;
• An on/off valve that is controlled via the electronics associated to a fuel gas metrology electronics;
• wherein the on/off valve shall further be accessible by a pre-paired mobile device to execute valve function;
• A communication interface such as an embedded wireless module that is connected to a mobile device via a pre-paring procedure as well as a data interface linked to the network via a wired connection;
• A build-in control electronics that have a capability to control the on/off valve electrically for open and close functions based on the metrology data from the MEMS mass flow sensor;
• wherein the build-in control electronics can be further accessible by a pre-paired remote mobile device and execute commands from the mobile device;
• and
• A mechanical flow channel and enclosure that is used to house the MEMS mass flow sensor and the electrically controllable on/off valve as well as the control electronics;
• wherein the mechanical flow channel and enclosure will meet a safety requirements for commercial and residential application domain.