A dual channel pressure sensitive core

Abstract

The invention relates to the technical field of pressure sensing and detection, in particular to a dual-channel pressure-sensitive core body. A diaphragm is fixedly welded and installed on the upper end surface of the outer cover body; a ring is fixedly welded and installed on the upper end surface of the diaphragm; The transition ring is fixedly welded and installed; the outer wall of the transition ring is sleeved with a filter cover; the lower bottom surface of the outer cover body is fixedly welded and installed with an arc block; the upper surface of the outer cover body is opened and processed with assembly grooves; the bottom surface of the assembly groove is spaced through A mounting hole is opened and processed; a ceramic pad is installed inside the assembly groove; sintered glass is fixedly installed inside the mounting hole; the upper end surface of the sintered glass is bonded to the lower bottom surface of the ceramic pad; the upper surface of the ceramic pad is processed with a concave Slot; the present invention can provide a dual-channel pressure-sensitive core with reasonable structural design, stable and firm internal circuit connection, strong applicability to complex environments, fast mutual switching of dual-chip structure signals, and high fault tolerance.

Description

technical field [0001] The invention belongs to the technical field of pressure sensing and detection, and in particular relates to a dual-channel pressure-sensitive core body. Background technique [0002] The pressure sensing core is a device that can detect the pressure of gases and liquids in the environment. When the product is in operation, the external pressure is transmitted to the internal pressure chip through the diaphragm on the device. The chip uses the piezoresistive effect to make the chip surface resistance and The external pressure changes in a certain proportion, and then the voltage output signal is obtained through the bridge resistance measurement, and then the signal output by the chip is transmitted to the external display device through the lead wire, so as to obtain the pressure. The structure of the existing equipment is intricate, occupying a large space for installation equipment, and it is not convenient for equipment production and assembly; and...

AI Technical Summary

Problems solved by technology

The structure of the existing equipment is intricate, occupying a large space for installation equipment, and it is not convenient for equipment production and assembly; and the inlet port of the induction medium is open and has no filtering structure, which makes it easy to be blocked and affect the detection accuracy; moreover, the equipment circuit is usually Directly lead out the connection from the inside. When the external operation is excessively pulled or the installation force is too large, it will cause the circuit to separate from the internal chip and cause damage to the device; in addition, the built-in pressure sensor chip is too single. When the internal chip is damaged, the pressure measurement cannot be carried out, and the state of the internal parameters of the detection environment cannot be understood in real time, which will bring certain safety hazards

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