36results about How to "Has the ability to resist electromagnetic interference" patented technology

The invention discloses a display screen, comprising a display panel, a pressure detection layer, an insulating layer, a pressure sensing layer and a touch panel, wherein the display panel comprises a display material layer; the pressure detection layer is formed on the exit side of the display material layer; the insulating layer is formed on one side, away from the display material layer, of the pressure detection layer; the pressure sensing layer is formed on one side, away from the pressure detection layer, of the insulating layer, the pressure detection layer, the insulating layer and the pressure sensing layer jointly form a detection capacitor, and the detection capacitor is used for being connected with a pressure control chip; and the touch panel is formed on one side, away from the insulating layer, of the pressure sensing layer. The pressure detection sensitivity of the display screen is high. The invention further discloses a display.

The invention discloses a pluggable connector having anti-electromagnetic interference capability. The pluggable connector comprises a socket body, a plurality of terminal assemblies and a shielding cover assembly, wherein the socket body comprises an insulation base and an anti-electromagnetic interference plug block, the insulation base and the anti-electromagnetic interference plug block are combined to form an upper circuit board slot and a lower circuit board slot, the terminal assemblies are arranged on the socket body, comprise a plurality of signal terminal assemblies and a plurality of grounding terminal assemblies and are arranged in parallel according to a sequence of grounding terminal assembly, signal terminal assembly and signal terminal assembly, the shielding cover assembly is provided with an upper port and a lower port, and the upper port and the lower port are respectively aligned to the upper circuit board slot and the lower circuit board slot. In the pluggable connector, the anti-electromagnetic interference plug block is arranged, and thus, the anti-electromagnetic interference capability of the pluggable connector can be improved.

A laser and single-mode optical fibre telesignalization signal acquisition device, including a laser sending circuit (1), a single-mode optical fibre (8), an optical signal switch (4) and a laser signal receiving circuit (2). The laser sending circuit (1) is connected to one end of the single-mode optical fibre (8), and a pigtail adaptor (9) at the other end of the single-mode optical fibre (8) is correspondingly installed on an optical through-via at one side of the optical signal switch (4). The laser signal receiving circuit (2) is connected to one end of a single-mode optical fibre (10), and a pigtail adaptor (11) at the other end of the single-mode optical fibre (10) is correspondingly installed on an optical through-via at the other side of the optical signal switch (4). The device feeds back the operating status of the monitored apparatus using the ON / OFF of the optical signal circuit and transmits the telesignalization information to the monitoring apparatus, with a simple structure, reliable performance, low power consumption, and resistance to electromagnetic interference.

The invention relates to introduction of a distributed optical fiber sensor and a tomographic imaging technology into monitoring of load distribution of a flexible thin plate structure and belongs tothe field of structural health monitoring. The introduction comprises the following steps: firstly, describing a bending mechanical model of the flexible thin plate structure by adopting a field theory method; secondly, constructing a mechanical model matched with a tomographic imaging method taking Radon conversion as a mathematical foundation; thirdly, adopting a sensor composed of two fiber bragg gratings which are mutually orthogonal in 0 degree / 90 degrees; and according to strain measured by the sensor, calculating spatial second derivative of location deflection where the sensor is located, wherein a difference value of any two spatial second derivatives is namely the Radon conversion of a shear force field; fourthly, according to a principle that a monitored area is covered most widely while the most scanning lines are generated, constructing a sensor observation matrix; fifthly, according to the Radon conversion of the shear force field obtained in the step three, reconstructing the shear force field by adopting Radon inversion; and sixthly, solving divergence of the shear force field, wherein the divergence of the shear force field is namely the load distribution of the flexible thin plate structure.

A current measuring device, comprising a current measuring device bayonet nut connector (1), a printed circuit board (2), a sampling resistor (3), an analog / digital converter (5), and connecting the bayonet nut connector with the analog / digital BNC coaxial cable for digitizer (4). The bayonet nut connector (1) includes a positive pole, a negative pole and an insulating material between the positive pole and the negative pole. The printed circuit board (2) includes an insulating material substrate and a metal circuit. The two ends of the sampling resistor (3) are connected in parallel with the two poles of the bayonet nut connector through the metal circuit on the printed circuit board, and connected in series in the circuit under test. The sampling resistor (3) is welded outside the bayonet nut connector, or built into the bayonet nut connector. The analog / digital converter circuit (5) processes the sampled voltage between the two terminals of the bayonet nut connector, and the BNC coaxial cable (4) is connected to the bayonet nut connector (1).

The invention relates to a control system for optimum frequency conversion point of a photon and the operation method thereof. The control system for optimum frequency conversion point of a photon is characterized by comprises the following steps: a part of the frequency converted light output of the light modulator is sent to the photovoltaic conversion module of the system as the return signals; the converted electrical signals enter the signal processing module through the signal extraction module; the electronically controlled signals is obtained through operations; and the control voltage is output to the light modulator through the decision module and the drive circuit module. The operation method comprises the following steps: initializing firstly; reading the electrical signals converted by the photoelectric conversion module, which is carried out by the signal extraction module; sending to the information processing module after preprocessing; performing curve fitting circularly on the signals; performing differential, integral and scaling operations to obtain the real time electronic control signals; outputting the control voltage to the light modulator through the decision module and the drive circuit module; and making the light modulator work at the optimum frequency conversion point. The hardware of the system disclosed by the invention realizes the rapid and precise control of the light modulator to work at the optimum frequency conversion point, therefore, the frequency of the outputting optical signals is stable, the dynamic range of the upper and lower frequency conversion of the frequency conversion of the photon is increased, the transmission loss is reduced, and the electromagnetic interference is also prevented.

The invention discloses an intelligent inspection system and method for power transmission equipment. The system includes an inspection terminal, an intelligent inspection monitoring gateway, an intelligent inspection central station, an overhead power cable and a plurality of towers. The intelligent inspection central station includes a laser, a first A modulator, an electrical signal source and an analog-to-digital conversion module, as well as a first polarizer, a first circulator, a second polarizer, a demodulator and a light detector; the tower includes a first microring, a second microring and The third microring, and the second circulator, the third circulator, the second modulator and the third modulator, the input terminal of the second modulator is connected with the first GPS antenna, and the input terminal of the third modulator is connected with The second GPS antenna, the third microloop is connected with a Sagnac reflector. The system structure of the present invention is simple, combined with the operation inspection method, can be effectively applied in the operation inspection of power transmission equipment, improves operation and maintenance efficiency, has strong anti-electromagnetic interference ability, is suitable for working conditions with complex electromagnetic environments in power transmission equipment, has remarkable effects, and is easy to popularize.