85results about How to "Reduce the size of the module" patented technology

This invention relates to a current control device of a simplified LED module including: a current control circuit, a first transistor and a current limiting protection circuit, in which, the current control circuit includes a first resistor generating a first current signal to regulate the radiation power of at least one LED, the first transistor controls the operation of the LED with the help of the first current signal and generates a second current signal, and a second transistor in the current-limiting protection circuit can decide open or close of channels based on the second current signal and the second resistor to further control said first current signal, in this way, the module can control the radiation power by the current control circuit and protect it with the help of current limit of the protection circuit.

The invention discloses a rotating shaft torque measurement method and a system based on wireless technology. The method comprises the following steps: 1) collecting a voltage analog signal; 2) performing amplification, filtering and analog-to-digital conversion on the voltage analog signal to obtain a voltage digital signal; 3) transmitting the voltage digital signal to an upper computer througha Bluetooth data transmitting module, and obtaining a torque value of the rotating shaft after being processed by the upper computer; 4) the required power is supplied by wireless power supply. The system comprises a strain gauge torque sensor, an integrated circuit board, an upper computer and a wireless power supply device. The wireless power supply device comprises a power receiving component and a power transmitting component; the upper computer is provided with a Bluetooth data receiving module; the integrated circuit board is integrally provided with a power module, a strain signal processing module, a data processing module, and a Bluetooth data transmitting module. According to the rotating shaft torque measurement method and the system based on wireless technology, the torque measurement accuracy of the rotating shaft is improved by the combined application of wireless power supply and Bluetooth data transmission.

The invention discloses a stimulating module for testing the universal performance of a serial interface. A system on chip (SOC) is used for controlling the generation of a Baud rate and providing a signal source for forming a serial communication signal; a common-mode signal generating module is used for converting two paths of digital to analogue (D/A) output signals on the SOC to generate a common-mode signal; a different-mode signal generating and amplitude controlling module is used for converting a single-ended signal output by an SOC serial port into a different-mode signal and controlling the amplitude of the different-mode signal; a different-mode signal and common-mode signal superposition module is used for superposing the common-mode signal and the different-mode signal generated by the common-mode signal generating module and the different-mode signal generating and amplitude controlling module so as to obtain an amplitude-adjustable serial communication signal; and a serial protocol chip is used for receiving a corresponding signal for the SOC. The simulating module is SOC technology-based and consists of circuits, such as the SOC, a gate circuit, an operational amplifier, a digitally controlled potentiometer and the like, and programming and offset adjustment, programming of signal amplitude and programming of word format can be realized.

The invention belongs to the technical field of electromechanical control in a high-pressure marine environment, and particularly relates to a position indicator for marine equipment. The position indicator comprises a power supply circuit, a water pressure switch, a single chip microcomputer, a GPS and iridium satellite positioning communication module, and an antenna, wherein the power supply circuit is connected with a battery, the water pressure switch, the single chip microcomputer, the GPS and iridium satellite positioning communication module and the antenna are connected in sequence, and the power supply circuit is connected with the single chip microcomputer and the GPS and iridium satellite positioning communication module. The position indicating method comprises the following steps: when a contact in a switching assembly of the water pressure switch is closed, the single chip microcomputer is brought into a working state, and the GPS and iridium satellite positioning communication module is started to work, and whether GPS information is effective or not is judged; if GPS position information deviates from the last position information by more than 10 meters, the GPS information is judged as effective, and the GPS position information is sent; and if the GPS position information does not deviate from the last position information by more than 10 meters, the GPS information is judged as ineffective, and the last detected position information is used as effective information of positioning and does not need to be resent. The position indicator is not in electrical connection with marine environment to which the position indicator is attached, so that interference to the marine equipment is avoided, and the influence of power failure of the main system of the marine equipment to the work of the position indicator system is avoided.

The invention relates to a Beidou GPS dual-mode positioning method, positioning terminal and positioning system. The method comprises steps of receiving satellite positioning data information, and according to the satellite positioning data information, reading a second pseudo range between the Beidou GPS dual-mode positioning terminal and a positioning satellite; receiving a difference factor broadcast by a base station and correcting the second pseudo range according to the difference factor so as to obtain a second real range between the Beidou GPS dual-mode positioning terminal and the positioning satellite; and according to the second real range and the satellite positioning data information, calculating the precise coordinate of the Beidou GPS dual-mode positioning terminal, thereby finishing positioning. According to the invention, according to the difference between a measurement position and an actual position between the base station and the positioning satellite, the difference factor is generated, and according to the difference factor, the measurement position of the Beidou GPS dual-mode positioning terminal is acquired and corrected, so the precise position of the Beidou GPS dual-mode positioning terminal is obtained, and the high precision positioning of the position is achieved.

In a light source apparatus, a method of manufacturing the light source and a backlight assembly having the same, a light guide plate (LGP) includes an upper surface and a lower surface facing each other and a first side surface and a second side surface. The light source is placed in the LGP adjacent to the first side surface and emits light toward the second side surface. The power supply unit is electrically connected to the light source and partially placed in the LGP. The light source may include a lamp or a light-emitting diode (LED). The power supply unit may include a wire or a power supply substrate. The light source apparatus may be formed by an injection molding process using lower and upper mold frames. Therefore, backlight assembly size, the number of parts and manufacturing steps may be decreased, and the illumination quality may be improved.

The invention provides a small-size, high-sensitivity and high signal-to-noise ratio MEMS (Micro-electromechanical Systems) silicon microphone. The MEMS silicon microphone comprises a metal housing cover, an MEMS device, an ASIC (Application Specific Integrated Circuit) device and a PCB. The MEMS silicon microphone is characterized in that a voice input hole is arranged in the metal housing cover; the MEMS device is adhered to the inner side of the metal housing cover through insulating glue; a cavity is formed in one surface of the MEMS device and abutted with the voice input hole; the PCB is a three-layer PCB; a groove is arranged in the PCB and opposite to the cavity by the position; the groove is positioned at the back of the cavity; the ASIC device is arranged at the central bottom part of the groove; a gap is formed between the top part of the ASIC device and the lower part of a vibration film of the MEMS device, so as to reach the packaging manner that the MEMS silicon microphone is vertically inversely mounted and voice is input from the front. The small-size, high-sensitivity and high signal-to-noise ratio MEMS silicon microphone is high in sensitivity and signal-to-noise ratio; the capacity of a module is reduced; the demand on high circuit integration is met.

The invention relates to the technical field of optical devices, in particular to an aspheric high-definition front wide-angle lens which is used for a 2-megapixel camera module of a mobile phone. The aspheric high-definition front wide-angle lens is of a structure with a front diaphragm and three aspheric plastic lenses, is in a special aspheric combination design, and accordingly has the advantages of small module size, wide field angles, high product yield, good imaging effect and low cost.

The invention discloses a vehicle-mounted remote terminal supporting multi-network sharing. The vehicle-mounted remote terminal is composed of a microprocessor module, a 4G wireless communication module, a BD/GPS positioning module, a WiFi module, a Bluetooth module, a radio module, an NFC chip, a six-axis sensor, a battery and management module, a data memory, a mobile TV module, a CAN transceiver, a CAN controller, a voice output/input module, an indicator light, an interface circuit and a button module. The microprocessor serving as a data and information processing core is connected with all sub modules and controls function calling of all sub modules. The battery and management module consists of a built-in battery and a management module; the built-in battery is used for ensuring normal working of the vehicle-mounted terminal when power of the vehicle is interrupted; and when the vehicle is started normally, the power of the vehicle-mounted terminal is provided by a vehicle engine. The CAN transceiver and CAN controller are used for realizing communication between the intelligent vehicle-mounted terminal and the whole vehicle network.

The present invention mainly comprises light signal transceiving component and circuit board. The optical fibre connection end disposed via one side of the light signal transceiving component is connected with optical fibre, a filtering plate is utilized to generate deffection for light signal issued by the optical fibre for it being into input end then the light signal is converted to be electric signal transmitted to the circuit board through photoelectric converting unit. With the same principle as above, the electric signal can be converted to be the light signal which is transmitted to the optical fibre so action of transmitting and receiving light signal can be selected at the same time by setting on optical fibre at an optical connection end.

The invention discloses a radar beam forming system, which comprises a plurality of first optical wave combining/dividing devices, a plurality of groups of optical time delay components and a second optical wave combining/dividing device, and is characterized in that one end of each group of optical time delay components is connected with one first optical wave combining/dividing device, and the other end of each group of optical time delay components is connected with the second optical wave combining/dividing device; and each group of optical time delay assemblies comprises an optical dispersion time delay assembly and an optical transmission time delay assembly, the optical dispersion time delay assembly comprises a plurality of dispersion time delay devices and optical switches which are arranged at intervals, and the optical transmission time delay assembly comprises a plurality of transmission time delay devices and optical switches which are arranged at intervals. According to the method, on the premise that the functionality of the radar is kept unchanged, the number of devices, the module size, the power consumption, the cost budget and the like are greatly reduced, and the larger the array plane scale is, the larger the reduction amplitude is.

The automatic vehicle bumper includes front electronic inductor, back electronic inductor, real-time current processor, time relay, contactor, braking motor, braking force transferring line, and power source. The front electronic inductor and the back electronic inductor are connected to the real-time current processor and the time relay; the contactor is connected to the braking motor; and the braking motor pulls via the braking force transferring line the pedal to brake. The automatic vehicle bumper has small size, sufficient control sensitivity, raised reliability and controllable braking time, and can avoid collision accident to both fixed and movable bodies including in foggy day and weak lighting. The present invention is suitable for various kinds of motor vehicle with accumulator.

The invention provides a module topology which is applied to a modular multilever converter (MMC) type flexible direct current transmission system and has improved power density. The module topology comprises four insulated gate bipolar translators (IGBTs) VT1, VT2, VT3 and VT4, wherein the four IGBTs are respectively and reversely connected in parallel with diodes VD1, VD2, VD3 and VD4; a direct-current capacitor C is input or removed by controlling the switch-on or switch-off of the two IGBTs VT1 and VT2 in a first H half-bridge structure so as to generate a required alternating-current voltage; and an extra LC circuit is controlled by the two IGBTs VT3 and VT4 in a second H half-bridge structure to absorb a fundamental frequency on the direct-current capacitor and the frequency fluctuation of a second harmonic frequency, so that the frequency fluctuation is reduced, the capacitance and the volume of the direct-current capacitor are reduced. The capacitance of the direct-current capacitor can be reduced through the introduction of an auxiliary circuit, thus, the module volume is reduced, and the power density is improved.

The invention relates to a wavelength selecting optical blocker. The wavelength selecting optical blocker comprises a light polarization transformation assembly arranged between a light input/output assembly and a condensation/polarization lens assembly; a light splitting assembly arranged between the condensation/polarization lens assembly and a wavelength channel control assembly and used for spatially separating different wavelengths of incident light signals. The wavelength channel control assembly is composed of two rows of one-dimensional liquid crystal arrays, arranged on the end face of a polarization light transposing assembly and used for controlling the opening, attenuation and closing of wavelength channels; and the polarization light transposing assembly is used for making the incident polarized light deviate to a certain degree and outputting the light from each wavelength channel to set output ports. By means of a liquid crystal unit array, dual-light-path selective wavelength blocking and attenuation functions are realized.

The present invention discloses a high frequency high voltage transformer module, comprising: a transformer and a rectifying filter; wherein the transformer comprises: a U-shaped magnetic core, a transformer skeleton, a primary winding and a secondary winding; the transformer skeleton comprises: two hollow inner skeletons and two outer skeletons; the two inner skeletons respectively wrap two vertical portions of the U-shaped magnetic core; the two outer skeletons respectively wrap two inner skeletons; the two inner skeletons are respectively wound with primary windings; the two outer skeletonsare respectively wound with secondary windings; the secondary winding is connected to the rectifying filter. The high-frequency high-voltage transformer module of the transformer module has small volume, small distributed capacitance and low loss.

The invention relates to the technical field of an optical device, and especially relates to a photographic lens. By utilizing a structure of a front-placed aperture stop and four aspheric surface plastic lenses, and through a special aspheric surface combination design, the photographic lens has the advantages of small pixel unit, small module size, short total lens length, high product yield, good imaging effect, and low cost.

The invention provides an automatic detection system for a rail vehicle air conditioner. The system comprises a measuring unit, a network coordinator and an upper computer, wherein the measuring unitcomprises a measuring body and a shell; the shell is used for protecting the measuring body, and the part of the measuring body is arranged outside the shell and is in direct contact with the air; andthe measuring body is in wireless signal connection with the network coordinator, and the network coordinator is in signal connection with the upper computer. The automatic detection system for the rail vehicle air conditioner solves the problems that a wired transmission system is large in occupied space and inconvenient to use and cannot meet the requirements for enclosed space testing.