7results about How to "Accurate pressure detection" patented technology

The invention discloses a dual-engine ammonia fuel supply system and a working method, which improve the production test run efficiency of an ammonia fuel engine, and meanwhile, when one or zero engine is tested, a non-test run ammonia fuel supply system can be completely free of ammonia, so that the safety of operators is ensured. According to the technical scheme, the system comprises a material storage device, a supply system and a control system; the material storage device is connected with the supply system, and a gasification device and a pressure reducing valve are arranged on the material storage device; the supply system is divided into a first supply system and a second supply system, the first supply system and the second supply system are both connected with the control system, and the control system is used for controlling fuel supply of the first supply system and the second supply system and removing tasks of redundant fuel according to different working conditions; the first engine and the second engine are installed in the workshop, and the material storage device, the supply system and the control system are arranged outside the workshop.

The invention relates to the technical field of intracranial probes, and discloses an intracranial probe with a built-in miniature pressure and temperature sensor and a packaging technology.The intracranial probe comprises a metal sleeve, a semi-circular ball head, a plastic sleeve, a carrier plate, a pressure sensor chip, a sealing tape, a breather pipe and a temperature sensor chip, one end of the metal sleeve is fixedly connected with the semi-circular ball head, and the other end of the metal sleeve is fixedly connected with the plastic sleeve; the other end of the metal sleeve is fixedly connected with the plastic sleeve; a notch, a first through groove and a second through groove are sequentially formed in the carrier plate in the X direction, the notch is communicated with the first through groove, and protruding blocks are symmetrically arranged at the end, close to the second through groove, of the carrier plate in the Y direction; according to the intracranial probe with the built-in miniature pressure and temperature sensor and the packaging technology, the problems that the placing position of a pressure sensor chip of an existing intracranial probe is affected by a wire and deviates, and stress measurement data generated by rebounding of the wire and the like are inaccurate are solved.

The present invention proposes a pen tip, which includes a pen tip, a shielding part, a transmitting part, a conductive part, a conductive plate and a first spring. A fixing groove is provided at the top center of the conductive part, a magnetic component is fixed in the fixing groove, a conductive plate is provided above the magnetic component, the magnetic field detector is provided on the conductive plate, a gap is left between the magnetic component and the conductive plate, the outer wall of the conductive part protrudes outward to form a boss, the first spring is sleeved on the outside of the conductive part, a plug-in slot is provided at the bottom center of the conductive part along the length direction of the conductive part, the end of the pen tip is inserted into the plug-in slot, the shielding part is sleeved on the outside of the conductive part, the inner wall of the shielding part protrudes inward to form a convex ring, the transmitting part is sleeved on the outside of the shielding part, and a signal line connected to an external circuit extends from the transmitting part. The present invention can achieve accurate pressure detection.

The utility model discloses a pressure detection device for a mine filling pipeline. The pressure detection device comprises a filling three-way pipe, a vibrating wire type soil pressure gauge, a filling blind plate, an outer clamp and a telemetering cable, the top end of the filling three-way pipe is a pressure meter mounting port; a vibrating wire type soil pressure gauge is installed in the pressure gauge installation opening, a filling blind plate is welded above the vibrating wire type soil pressure gauge, the filling blind plate and the filling three-way pipe are fixedly installed through an outer clamp, and a telemetering cable of the vibrating wire type soil pressure gauge is connected with a computer detector to display the pressure value. The device is simple in structure and accurate in pressure detection; the problem that the pressure detection difficulty of the filling pipeline is large is effectively solved, use and maintenance are convenient, and real-time pressure detection in the filling pipeline is guaranteed.

The utility model relates to the technical field of pressure detection, and discloses a differential pressure transducer, which comprises a shell, an installation groove is arranged in the shell, a first detection groove and a second detection groove are arranged in the installation groove, and a first gas transmission channel communicated with the first detection groove and a second gas transmission channel communicated with the second detection groove are arranged on the shell. The bottom of the PCB is provided with two MEMS chips, the bottom surface of the PCB is provided with a box dam at the periphery of each MEMS chip, and the box dam is provided with a third gas transmission channel; the PCB is installed in the installation groove, the two box dams are installed in the first detection groove and the second detection groove in a sealed mode through adhesive layers respectively, and gas input from the first gas transmission channel and the second gas transmission channel is input into the MEMS chip through the third gas transmission channel. When the pressure detection device is used, the two MEMS chips are arranged, and the two MEMS chips can detect the pressure at the two ends of the particle trap through the first gas transmission channel and the second gas transmission channel, so that the pressure detection can be more accurately carried out.

The invention relates to the technical field of sensors, and discloses a multi-dimensional perceptual driver, an identification method, a tactile interaction system and application, the perceptual driver comprises a resistance sensing layer, a capacitance sensor and a limiting layer; the resistance sensing layer is used for sensing the direction of force and comprises a first thin film layer, a plurality of flexible resistance sensors distributed in all directions, a second thin film layer and a gas channel layer. The capacitance sensing layer is used for sensing the magnitude of force and sequentially comprises a first flexible electrode, a first dielectric layer, a second dielectric layer, a third dielectric layer and a second flexible electrode from top to bottom, a through hole is formed in the middle of the second dielectric layer, a notch is formed outwards in the through hole, and a gas channel is formed; the limiting layer is used for limiting deformation of the gas channel layer and the second dielectric layer. According to the invention, the plurality of flexible resistance sensors are added to the resistance sensing layer on the surface layer, so that detection of different contact force directions is realized; pressure detection is carried out more accurately through multi-dimensional data fusion, interference is avoided, and the sensing precision is improved.

The utility model discloses a surface acoustic wave filter testing device with adjustable down force, and relates to the technical field of testing equipment. The bracket is provided with a guide rail along the vertical direction; the pressure sensor is slidably connected to the guide rail and is used for detecting the pressure on the surface of the to-be-detected piece; the limiting assembly is connected to the support, located on one side of the guide rail and used for adjusting the downward pressing stroke of the pressure sensor so that the pressure of the pressure sensor can be adjusted; and the supporting platform is connected to the bracket, is positioned below the pressure sensor, and is used for supporting a to-be-detected piece. The utility model aims to realize the adjustable pressing pressure of the existing testing device and improve the testing consistency.