Wireless temperature sensing system and its manufacturing method and microwave heating device
A sensing system and wireless temperature technology, applied in thermometers, measuring devices, electric heating fuel, etc., can solve problems such as inability to measure temperature, inability to directly insert probes, and inability to detect the temperature of the object under test.
Active Publication Date: 2018-09-14
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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Problems solved by technology
[0004] However, the method of contact temperature measurement needs to make a microwave shield for the entire temperature probe, and when the measured object is wrapped by other objects, the probe cannot be directly inserted into the measured object, resulting in the inability to measure the temperature
The non-contact temperature measurement method can only measure the surface temperature of the measured object, but cannot detect the internal temperature of the measured object
Moreover, non-contact temperature measurement must require that the measured object must be exposed within the detectable range, and there must be no occlusion
[0005] Therefore, there are certain shortcomings in the methods of measuring the temperature of objects in the microwave environment commonly used at present.
Method used
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example 1
[0075] Example 1: Take the metal tray of the microwave heating device as the substrate 114 to set up the sensing element as an example:
[0076]In step S1, surface treatment is performed on the substrate 114: surface planarization treatment is performed on the surface area of the substrate 114 where the sensing element 102 needs to be disposed, so that the surface roughness of the substrate 114 reaches or exceeds 100 nm.
[0077] Cleaning the surface of the substrate 114: using acid, alkali, deionized water, absolute ethanol, and deionized water to clean the surface of the substrate in sequence, and drying in a nitrogen atmosphere after cleaning.
[0078] In step S2, the sensing element 102 is set: on the surface-treated and cleaned substrate 114, an insulating dielectric layer 116 with a thickness of 20 μm is formed according to the design pattern by coating, and an insulating dielectric layer 116 with a thickness of 10 μm is formed on the insulating dielectric layer 116. T...
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Abstract
In a wireless temperature sensing system disclosed by the invention, a functional dielectric layer is connected with a first antenna, wherein an antenna system sends a driving signal to the first antenna through a second antenna, the functional dielectric layer generates a resonant frequency signal changing along with temperature according to the driving signal, and the first antenna sends the resonant frequency signal to the second antenna; and a control unit controls the antenna system to send the driving signal, receives the resonant frequency signal sent by the antenna system, measures resonant frequency of the resonant frequency signal, and calculates temperature measured by a sensing element. According to the wireless temperature sensing system, the problems that a non-contact type temperature measurement method is interfered by temperature, the sparking is caused by using a metal lead wire in a microwave environment in a contact type temperature measurement method and the like can be solved. The invention further discloses the manufacturing method of the wireless temperature sensing system, and a microwave heating device.
Description
technical field [0001] The invention relates to the field of household appliances, and more specifically, to a wireless temperature sensing system, a manufacturing method of the wireless temperature sensing system, and a microwave heating device. Background technique [0002] In the microwave environment of the microwave heating device, due to the phenomenon of sparking and self-heating caused by metal wires and plastic packaging materials, the electronic components cannot be used in the microwave environment, or the service life in the microwave environment is greatly shortened. However, measuring the temperature of an object in a microwave environment is one of the important means to measure the uniformity of microwave distribution. [0003] At present, the temperature measurement of objects in a microwave environment is mainly divided into two types: contact measurement and non-contact temperature measurement. Among them, the contact temperature measurement refers to mak...
Claims
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IPC IPC(8): G01K7/32F24C7/02F24C7/08
Inventor 陈寅之周少国
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD