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AssigneeInnovative Sensor Technology IST AG
InventorsTomasz Ciesla, Christoph Hepp
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The invention comprises a thermal flow sensor (1) for determining the temperature and the flow velocity of a flowing measuring medium (210), comprising:—a functional element (110) which is configured to determine the temperature of the measuring medium (210) and to influence the temperature of the measuring medium (210); and—a control and evaluation unit (120) which is configured to determine the temperature of the measuring medium (210) in a first interval of time by means of the functional element (110) and to determine the flow velocity of the measuring medium (210) in a second interval of time following the first interval of time, and a method for determining the temperature and the flow velocity of the measuring medium (210) by means of the thermal flow sensor (1) according to the invention, and a sensor system comprising such a thermal flow sensor (1) and a further sensor type.
A thermal flow sensor (1) for determining the temperature and the flow velocity of a flowing measuring medium (210), comprising:
The thermal flow sensor (1) according to at least one of the preceding claims, wherein the control and evaluation unit (120) is a PC or an operating unit.
The thermal flow sensor (1) according to at least one of the preceding claims, wherein the functional element (110) is configured so as to have a measuring temperature that, as a result of the application of the electrical quantity, is lower than the ascertained temperature of the measuring medium (210).
The thermal flow sensor (1) according to at least one of the preceding claims, wherein the thermal flow sensor comprises a carrier element (130) into which the functional element (110) is introduced, the carrier element (130) being in contact with the measuring medium (210).
The thermal flow sensor (1) according to at least one of the preceding claims, wherein the thermal flow sensor comprises a substrate (140) having a first thermal resistance value, including a surface facing the measuring medium (210) and including a surface facing away from the measuring medium (210).
A sensor system, comprising a thermal flow sensor (1) according to at least one of claims 1 to 17 and at least one further sensor element, wherein the control and evaluation unit (120) is configured so as to activate the thermal flow sensor (1) and the at least one further sensor element, to determine the temperature and the flow velocity of the measuring medium (210) by means of the thermal flow sensor (1), and to determine at least one further physical measurement variable by means of the at least one further sensor element.
A method for determining the temperature and the flow velocity of a measuring medium (210) by means of a thermal flow sensor (1), wherein the thermal flow sensor (1) comprises a functional element (110), which is configured to determine the temperature of the measuring medium (210) and to influence the temperature of the measuring medium (210), and a control and evaluation unit (120), comprising:
Dependencies are inferred from the claim text.