301results about How to "No mechanical wear" patented technology

The invention discloses a silicon-based hybrid integration laser radar chip system. According to a light path sequence, the transmitting terminal of the system comprises a tunable narrow linewidth laser source, a silicon nitride beam splitter, a silicon-based phase shifter array and a silicon nitride one-way transmitting antenna array in sequence. According to a principle that the light path is reversible, the receiving terminal of the system comprises a silicon nitride one-way receiving antenna array, a silicon nitride beam splitter and a silicon-based coherence receiving module in sequence and also comprises a backup system and an electric domain control processing module. Each module on a silicon platform and a silicon nitride platform realizes multilayer single-chip integration with the help of a silicon / silicon nitride evanescent wave coupler, and a gain chip in a tunable laser source module and silicon nitride waveguide are subjected to hybrid integration through horizontal coupling. By use of the system, through multi-platform multi-field hybrid integration, the high-speed flexible wave beam formation, rotation and directivity receiving of a free space laser signal can be realized in a phased array way. The system does not contain movable devices, and has high integration density, good CMOS (Complementary Metal-Oxide-Semiconductor Transistor) compatibility, low large-scale volume production cost and extremely high practical value.

The present invention provides one kind of magnetic device and method for enriching oxygen in air and belongs to the field of oxygen making technology. The oxygen enriching device includes permanent magnet, air source, buffer, air conveying pipe, inlet transition section, outlet transition section, oxygen-rich air conveying pipe, valves, nitrogen-rich air conveying pipe and container casing. The method of enriching oxygen in air includes introducing air into one magnetic field space with opened boundary and gradient magnetic field, bounding oxygen molecules inside the magnetic field space to form oxygen enriching area, and leading out oxygen-rich air from the oxygen enriching area. The present invention has the advantages of simple structure, simple operation, low cost, low power consumption, long service life and wide application.

The invention relates to an electronic device for determining a first positional information and a second positional information regarding a user input object, such as at least one user hand or at least one stylus, the electronic device comprising: a touch-sensitive surface; contact-free detection means; and controller means that are operatively connected to the touch-sensitive surface and to the contact-free detection means; wherein the first positional information depends on where the user input object contacts the touch-sensitive surface, and wherein the second positional information depends on the spatial configuration of the user input object with regard to the touch-sensitive surface, characterized in that the controller means are adapted for simultaneously and / or alternately determining the first positional information via the touch-sensitive surface and the second positional information via the contact free detection means.

The invention provides a device for detecting cam profiles, which has the advantages of simple structure, high detection precision and higher efficiency. The device comprises a numerical control turntable, a linear motor, a laser measuring head, a grating scale displacement sensor, an encoder and an industrial personal computer, wherein the numerical control turntable is used for driving the cam to horizontally and coaxially rotate around a vertical mandrel; the linear motor is horizontally arranged on one side of the numerical control turntable; the laser measuring head is arranged on the active cell of the linear motor and at one side of the cam; the grating scale displacement sensor is used for measuring the horizontal displacement of the active cell; the encoder is used for detecting the rotation angle of the cam; and the industrial personal computer controls the numerical control turntable and the linear motor to act and obtains the outer profile data of the cam according to datameasured by the laser measuring head, the grating scale displacement sensor and the encoder.

The invention provides a vibration shielding type electric field sensor which comprises an elastic component, a flexible hinge, a piezoelectric stack, a base, shielding electrodes and induction electrodes, wherein the shielding electrodes and the induction electrodes are arranged pairwise, the X-direction end of the flexible hinge is fixed on the base, the induction electrodes are fixed on the base in an insulating manner, two ends of the piezoelectric stack are fixedly arranged on the inner walls of two sides in the X direction of the flexible hinge, the shielding electrodes are arranged at an outer end in the Y direction of the flexible hinge and press an outer surface in the X direction of the flexible hinge through the elastic component, moreover, the shielding electrodes are earthed and arranged above the induction electrodes arranged pairwise. In the invention, mechanical motion is generated on the basis of the electrostriction principle of a piezoelectric material and is amplified by the flexible hinge to push the earthed shielding electrodes to reciprocate periodically, induction charges on the induction electrodes change periodically, the induction charges are in direct proportion to an electric field, the change of the charges forms current, and the current is amplified by a subsequent circuit to obtain the relationship between the current and the electric field.

The invention provides a detection method of a cam contour detection device which has the advantages of simple structure and high detection accuracy and efficiency. The cam contour detection device which is adopted by the detection method provided by the invention comprises a digital control rotary table, a linear motor, a laser measuring head, a grating ruler displacement sensor, an encoder and an industrial personal computer, wherein the digital control rotary table is used for driving a cam to be horizontally and coaxially rotated around a vertical mandrel; the linear motor is horizontallyarranged at one side of the digital control rotary table; the laser measuring head is arranged on the rotor of the linear motor and at one side of the cam; the grating ruler displacement sensor is used for measuring the horizontal displacement of the rotor; the encoder is used for detecting the rotation angle of the cam; and the industrial personal computer controls the motion of the digital control rotary table and the linear motor and obtains the outer contour data of the cam according to the data which is obtained by the laser measuring head, the grating ruler displacement sensor and the encoder.