US 12,553,777 B2 · Temperature sensing device

Abstract

The disclosure provides a temperature sensing device including a thermopile sensing assembly with a metal sleeve and a metal grid for blocking microwave from entering the thermopile sensor and influencing temperature detection. The temperature sensing device includes one or more than one thermopile sensing elements, an ambient temperature sensor, a signal processing chip, and an infrared lens providing narrow FOV. When dual thermopile sensing elements are used, one is active unit with narrow FOV for measuring the infrared radiation of the object to be detected, and the other one is a dummy unit for the compensation of the thermal shock to achieve the purpose of accurate temperature detection. The disclosure also provides the visible light source to indicate the sensing area of the thermopile sensor, that may facilitate the user positioning the object to be heated. FOV of the light source is the same with that of the thermopile sensor.

Claims11

Dependent claims

A temperature sensing device, comprising:

a substrate:
a thermopile sensing assembly, disposed on the substrate, comprising a metal sleeve, a metal grid, and a thermopile sensor, the metal grid disposed on a window of the metal sleeve, and the thermopile sensor disposed in the metal sleeve;
and
a signal connector terminal, disposed on the substrate,
wherein the thermopile sensor comprises:
a metal base:
a metal package casing, covering the metal base:
one or more than one thermopile sensing elements, disposed on the metal base, and covered by the metal package casing:
an ambient temperature sensor, disposed on the metal base:
an infrared lens, disposed on a window of the metal package casing to provide an infrared radiation to the thermopile element;
and
a signal processing chip, disposed on the metal base.

9 more elements

Dependencies are inferred from the claim text.

Temperature sensing device

Life of this patent

Temperature sensing device

Life of this patent

Abstract

Claims11