1. This utility model relates to the technical field of pressure sensor components, and more specifically, it is a silicon piezoresistive pressure sensor chip that prevents output drift Background Technology: 2. Silicon piezoresistive pressure sensors are made using the piezoresistive effect of monocrystalline silicon. Diffuse four equivalent semiconductor resistors in a specific direction of the silicon film and connect them to form a Wheatstone bridge, which serves as a sensitive component of the force electric converter. When the diaphragm is subjected to external pressure and the bridge loses balance, if an excitation power supply is applied to the bridge, an output voltage proportional to the measured pressure can be obtained, thereby achieving the purpose of measuring pressure

3. Existing pressure sensor chips inevitably come into contact with the outside world and are subjected to external stress, which can have a certain impact on the overall performance and accuracy of the sensor, especially high-precision and small range sensors. The impact of this external stress is more prominent, and in severe cases, the sensor cannot function properly

Technical implementation elements: 4. In order to overcome the aforementioned defects of the existing technology, this utility model provides a silicon piezoresistive pressure sensor chip that prevents output drift. The chip body is clamped and fixed by a second bolt driving a clamping plate to avoid shaking of the chip body. The frame body is connected and fixed to the support plate by the second bolt, and then the shell is driven down by the first bolt, and the pins are sleeved inside the shell, Protect the pins from external dust adhering to them or damage caused by external impact. The overall structure improves the protection of the chip body, avoiding inaccurate and unstable overall test values caused by damage to the chip body, in order to solve the problems in the background technology mentioned above To achieve the above objectives, this utility model provides the following technical solution: a silicon piezoresistive pressure sensor chip that prevents output drift, including a support plate, chip body, and pins. The chip body is arranged inside the support plate, and the pins are fixed on both sides of the chip body. The top of the support plate is provided with a placement slot, and the chip body is arranged inside the placement slot, There are multiple openings on both sides of the support plate, and the top of the openings runs through the support plate. The pins run through the openings and extend to the outside of the openings. The top of the support plate is covered with a frame, and both sides of the frame are equipped with protective devices. The protective devices are set at the top of the pins. The top of the frame is provided with an opening, which corresponds to the position of the chip body up and down. The placement slot is internally equipped with a clamping device