Ceramic Antenna Layout for High-Temperature Bluetooth Probes
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Solution Overview
Problem
Current Bluetooth temperature measuring probes suffer from FPC antennas that degrade under prolonged high temperatures, leading to unstable performance and a short service life.
Innovation Solution
The use of a ceramic antenna with a ceramic substrate and antenna metal layer, integrated within the needle tube and handle, and a shielding tube to enhance temperature resistance and signal stability, along with a charging line and metal head for power supply, while maintaining high gain and sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FPC antenna is used in Bluetooth temperature measuring probe, then the device can transmit and receive signals, but the antenna performance becomes unstable under prolonged high temperature conditions and service life is shortened
Solution Approach 1:
The patent changes the material parameter of the antenna from FPC (flexible printed circuit board) to ceramic material. This parameter change enables the antenna to withstand high temperatures without performance degradation, directly resolving the issue of unstable antenna performance under prolonged high temperature conditions and extending the service life of the temperature measuring probe.
2Reliability
If ceramic antenna is used to replace FPC antenna, then high temperature resistance and signal stability are improved, but device complexity increases due to additional components
Solution Approach 1:
The patent integrates multiple functions into the ceramic antenna component. The ceramic antenna not only serves as the signal transmission and reception element but also acts as the antenna structure itself, eliminating the need for separate FPC antenna structures. This multi-functionality approach reduces the overall device complexity despite using advanced ceramic material.
3Reliability
If antenna is placed inside needle tube and handle, then signal reception and transmission are optimized, but manufacturing precision requirements increase
Solution Approach 1:
The patent divides the antenna system into two segments: the ceramic antenna component and the shielding tube component. This segmentation allows each component to be manufactured and tested independently with standard precision, then assembled together. The shielding tube is separately fitted around the ceramic antenna, reducing the overall assembly precision requirements compared to integrating the antenna directly into the needle tube and handle structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ceramic antenna ensures stable operation under high temperatures with improved signal reception and transmission, and the shielding tube provides adjustable performance and structural support, enhancing the probe's efficiency and consistency.
Implementation Method 1
the charging line and the antenna metal layer are separately provided on two opposite surfaces of the ceramic substrate (51)
Implementation Method 2
the needle tube is made of metal material and has a good thermal conductivity, and the temperature sensor tests the temperature of the needle tube
Data Source
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AI summary
The present application relates to a Bluetooth temperature measuring probe including a needle tube, a handle, a first temperature sensor and a PCB board, in which the first temperature sensor and the PCB board are both provided in the needle tube; the handle is fixedly connected to the needle tube at a tail end thereof; the Bluetooth temperature measuring probe further includes a ceramic antenna provided inside the needle tube and the handle and having a head end extending into the needle tube and being electrically connected to the PCB board and a tail end extending into the handle to receive and transmit a signal, so as to realize an antenna function. The present application adopts the ceramic antenna to replace the current FPC antenna. The ceramic antenna has an advantage of high temperature resistance, and is able to work under a high temperature condition for a long time, but still ensures a work stability. Further, the ceramic antenna has advantages of high gain and high sensitivity. The ceramic antenna has a head end extending into the needle tube and being electrically connected to the PCB board and a tail end extending into the handle. Moreover, the handle is generally made of materials with poor shielding effect such as ceramic, which will not influence receiving and transmitting signals of the ceramic antenna for realizing the antenna function.