38results about How to "Improve pressure detection accuracy" patented technology

A fuel injection valve has an injector body (4z) having formed in it high-pressure paths (6az, 6bz, 6cz) that allow high-pressure fuel to flow to a nozzle and receiving a piezo actuator (2z)(drive means) etc. for operating a needle (valve element) to open and close the nozzle; a fuel pressure sensor (50z) mounted on the body (4z) and detecting the pressure of the high-pressure fuel; a senor terminal (55z) for externally outputting the detected pressure value obtained from the fuel pressure sensor (50z); a drive terminal (56z) to which electric power for the piezo actuator (2z) is supplied; and a connector housing (70z) for holding the sensor terminal (55z) and the drive terminal (56z). The sensor terminal (55z), the drive terminal (56z), and the connector housing (70z) form a single connector.

The invention relates to a pressure detection module. The pressure detection module includes a receptacle part for receiving a carrier substrate. A first side of the carrier substrate is provided with a pressure detection unit; and the carrier substrate is inserted into the receptacle part by virtue of a second side facing away from the first side; and the carrier substrate is fixed on the bottom of a receptacle groove by virtue of the second side facing away from the first side. In order to construct the pressure detection module as small as possible, and to manufacture it in a cost-effective way, the receptacle part, the receptacle groove and a peripheral flange around the receptacle groove are, for example, provided with a plate-shaped design. The bottom has a contacting opening, through which contact surfaces of the carrier substrate, which are exposed at the contacting opening, are electrically contactable. Besides, the invention also relates to a pressure sensor device having such a pressure detection module.

The invention discloses a roller coater which comprises a painting roller, a roller coater rack, a solution-taking roller, a solution-taking roller rack and a roller rest pressure adjustment device, wherein the roller rest pressure adjustment device comprises an operating side bearing base, a driving side bearing base, a sliding block, a turbine worm, a pressure detection element, a handwheel, a servo motor, linearity guide rails and linearity rails. The roller coater provided by the invention achieves the technical purposes that the automatization feedback and adjustment of the roller coater are realized, and the reaction accuracy is improved. Through the roller coater disclosed by the invention, the pressure detection element contacting the spherical surface of the operating side bearing base and the spherical surface of the driving side bearing base is adopted, a signal is provided for the operation of the servo motor, the regulation and control of a roller interval are beneficial, the accuracy and consistency of the thickness of a painting film are improved, and the quality of the painting film of the surface of a steel band and quality stability are guaranteed.

The invention relates to a method for detecting the pressure on the bottom surface of a granary and a pressure sensor used therefor. The method for detecting the pressure on the bottom surface of a granary using the pressure sensor includes: calibrating the pressure sensor to obtain a model and a calibration coefficient of the relationship between the sensor output value and the pressure; and using the pressure sensor to detect the pressure on the bottom surface of the granary. According to the contact characteristics between the sensitive surface of the pressure sensor and the bottom surface of the grain pile, and the influence law of the contact state on the output value of the pressure sensor, the invention proposes a method to improve the granary by adding an elastic pad between the sensitive surface of the pressure sensor and the bottom surface of the grain pile. The method for detecting the accuracy of the bottom surface pressure has the characteristics of convenient use and maintenance, and convenient sensor calibration.

The invention provides a detection method of a capacitive three-dimensional detection module. A capacitive three-dimensional detection module is provided, the capacitive three-dimensional detection module comprises a capacitive touch sensor, a piezoelectric pressure sensor and a capacitive three-dimensional controller integrated on a chip, the capacitive touch sensor comprises a plurality of touch units, the piezoelectric pressure sensor comprises at least one pressure sensing unit, the detection method comprises the following steps: S1, detecting a touch signal of the plurality of touch units in a mutual capacitance manner to determine the position of a touch point; and S2, detecting a pressure signal of the at least one pressure sensing unit in a self capacitance manner to determine the size of a pressing pressure, wherein the touch signal and the pressure signal are calculated by the capacitive three-dimensional controller. The capacitance detection method is simple and good in practicability.

The invention relates to a pressure controlled electric pressure cooker, comprising an outer cooker, an inner cooker, an electric hot tray, a cover and a control circuit. The inner cooker is arranged on the electric hot tray, the cover seals the mouth of the inner cooker, the bottom of the outer cooker is provided with a pressure detector, the pressure detector is electrically connected with the control circuit, a plurality of groups of elastic supporting devices are arranged between the electric hot tray and the bottom of the outer cooker, the electric hot tray or the elastic supporting device is provided with a touch rod capable of touching the pressure detector to act, corresponding to the elastic supporting device, the electric hot tray is provided with a strut, the elastic supportingdevice comprises an elastic plate and a pedestal, and the strut, elastic plate, pedestal and the outer cooker are sequentially connected. The invention has the advantages of simple structure, low cost and high pressure control precision.

The invention discloses a piston-type momentum experimental instrument with teaching effect and flow digital display, which comprises: a constant pressure water supply tank with an outlet on the side wall, the outlet is a nozzle; and the outlet of the constant pressure water supply tank The connected water collection tank; the momentum tube used to measure the jet flow force at the outlet of the constant pressure water supply tank is fixed in the water collection tank; the liquid-gas conversion pressure measuring cylinder set in the water stabilization work area of ​​the constant pressure water supply tank, the liquid-gas The top of the conversion pressure measuring cylinder is provided with a connecting positioning tube, which is located on the horizontal plane of the central axis of the outlet; a differential pressure sensor; a microcomputer digital display meter for converting the pressure signal detected by the differential pressure sensor into a flow rate; self-circulating water supply device. The experimental instrument of the present invention can automatically reset, eliminate the error of air compression and real-time zero adjustment, and has high precision, and can conveniently digitally and accurately measure the two basic physical quantities of the jet flow rate and jet flow force of the experimental instrument for the law of momentum of fluid dynamics, and has a good performance teaching effect.

Embodiments of the present invention provide a display panel and a display device, which relate to the field of display technology and are used to reduce the attenuation of a power signal and effectively improve the difference in drive capability of the power signal to pressure sensing units at different positions. The display panel includes M pressure sensing unit groups, a first signal line, a second signal line and at least one first connection signal line; the pressure sensing unit group includes a first pressure sensing unit and a second pressure sensing unit; A pressure sensing unit is set in the first non-display area, a second pressure sensing unit is set in the second non-display area; the first signal line is set in the first non-display area, the first signal line and the first pressure sensor The unit is electrically connected; the second signal line is arranged in the second non-display area, and the second signal line is electrically connected to the second pressure sensing unit; the first connection signal line is arranged between the first signal line and the second signal line, The first connection signal line is electrically connected to the first signal line and the second signal line. The above-mentioned display panel is used to realize screen display.

The embodiment of the invention discloses a display panel and a display device. The display panel includes: a display area and a non-display area surrounding the display area; the display panel includes at least one semiconductor pressure sensor disposed in the non-display area; the semiconductor pressure sensor is planar, and the semiconductor pressure sensor The pressure sensor is provided with a hollow area. The embodiments of the present invention improve the pressure detection accuracy of the pressure sensor and improve user experience.

The invention discloses a pressure sensor for a pressure cooking utensil, and a pressure cooking utensil. The pressure sensor comprises a housing, wherein one end of the housing is constructed to have a cavity with an opening, and the other end of the housing is provided with an air inlet channel communicating with the cavity; a sealing cover which is connected with one end of the housing so as to seal the opening; a positioning assembly which is arranged at a connecting position of the cavity and the air inlet channel, is in sealing connection with the housing and comprises a detection channel communicating the cavity and the air inlet channel; and a pressure detection assembly which is arranged on the positioning assembly, breaks connection of the connection channel, and has a pressure sensor chip arranged in the detection channel. According to the pressure sensor for the pressure cooking utensil, the working scope of the pressure sensor is wider, and the pressure cooking utensil can be enabled to have higher pressure detection precision.

The invention discloses a pressure signal flow measurement device and a flow measurement method for improving the precision. The pressure signal flow measurement device comprises an experimental water tank, a liquid-gas conversion pressure measurement cylinder, a fluid pressure difference sensor and a microcomputer, wherein the experimental water tank is provided with an outflow port, and a water stabilizing pore plate used for dividing a water inlet working area into an water inlet area and a water stabilizing working area is arranged in the experimental water tank; the liquid-gas conversion pressure measurement cylinder is arranged in the water stabilizing working area of the experimental water tank, a communication positioning pipe is arranged on the top of the pressure measurement cylinder, and the bottom surface of the communication positioning pipe is located on the horizontal axis plane of the outflow port; the fluid pressure difference sensor is used for detecting the pressure difference between compressed air in the liquid-gas conversion pressure measurement cylinder and the outside air; the microcomputer is used for converting a pressure difference signal detected by the fluid pressure difference sensor into the flow of the outflow port. According to the pressure signal flow measurement device and the flow measurement method, automatic resetting and real-time zero setting can be achieved, measurement precision is improved, the jet flow of a momentum experiment instrument and an orifice in a basic hydromechanics experiment and the jet flow of an orifice and a pipe nozzle of a pipe nozzle experiment instrument can be measured conveniently, digitally and accurately, and a good teaching effect is achieved.

The invention discloses an intrinsic safety type high-pressure fire hydrant comprising a valve, a valve rod and a valve base arranged at the bottom of the valve. A water inlet is arranged at the bottom of the valve, a water outlet is arranged on the side wall of the valve, the water inlet penetrates the valve base to be communicated with the inside of the valve, and the water inlet directly faces the valve rod and moves back and forth along the water inlet direction; a concave limit groove is arranged in the inner wall of the valve, a spiral groove is arranged in the outer wall of the valve rod, a limit device is arranged between the valve and the valve rod, one end of the limit device abuts against the limit groove, and the other end of the limit device is slidably fixed in the spiral groove. The intrinsic safety type high-pressure fire hydrant has the advantages that the intrinsic safety type high-pressure fire hydrant is simple in structure, convenient to install and maintain, resistant to high pressure, long in service life and low in equipment cost, and water pressure in the fire hydrant can be monitored in real time through a water pressure sensor.