65 results about "Electrical analog" patented technology

A device for the high-speed analysis of photon- or particle-generated image data or for the high-speed energy-discrimination analysis of photon- or particle-counting data. The device uses a sensor that collects the photons or particles on an array of solid state detectors, as electrical analog signals, and stores the analog-signal information on capacitors of readout arrays associated with the detector arrays. Integration of the photon or particle flux signals on the readout arrays proceeds for a given time frame and then image-related signals are transferred to an analog correction processor. The analog correction processor is comprised of one or more integrated circuit chips where each chip contains an array of correction processor unit cells. In these unit cells signals are corrected, in parallel, for gain and offset nonuniformities in the detection and processing chain. Corrections to all the signals are made in a time frame or less and the information is then transferred to an analog image processor. Particle-counting data is transferred directly from the readout array chips to the analog image processor. The analog image processor is comprised of one or more integrated circuit chips where each chip is made up of an array of image processor unit cells. Each unit cell contains circuitry for implementing an image processing or energy discrimination algorithm, and circuitry for outputting the signals and / or the position of only those unit cells for which the algorithm is satisfied. The analog image processor chip may also contain circuitry that counts the number of cells for which the algorithms have been satisfied. The analog image processor implements the algorithm and outputs the data in a time frame or less.

The invention relates to wireless biotelemetry of low level bioelectric and biosensor signals by means of directly modulating the backscatter of a resonant circuit. Low level electrical analog or digital signals are directly applied to a resonant circuit containing a voltage-variable capacitor such as a varactor diode, that proportionally shifts the resonant frequency and so amplitude of radiofrequency backscatter in a way that represents analog bioelectric or biosensor waveform data. By strongly driving the resonant circuit with a radiofrequency source, a voltage variable capacitance can be caused to amplify the bio-signal level by a parametric process and so provide sufficient sensitivity to telemeter for low millivolt and microvolt level signals without additional amplification. A feature of the device is its simplicity and that it accomplishes both modulation and preamplification of low level sensor signals by the same variable capacitance circuit which reduces the device size and power consumption.

A cochlear implant system for a patient's cochlea includes an external processor and an implanted internal unit. The internal unit includes one electrode for inserting in the patient's cochlea, and an internal coil for driving the electrode. The external processor includes a microphone for outputting electrical sound signals in response to ambient or other sounds, an oscillator for generating an electrical analog carrier signal, and a modulator for modulating the carrier signal with the sound signals to generate a modulated signal. An external coil couples magnetically the modulated signal to the internal coil. The analog carrier signal has a frequency in the ultrasonic human range, i.e. greater than 20 kHz, such as 32 kHz or 80 kHz. This sampling at higher frequency results in clearer rendering of sounds, and a higher frequency range of rendered sounds.

An apparatus and a method for processing sensor data for a vehicle using an unified data format eXtensible Markup Language in process of data communication between various vehicle sensors and a vehicle application system, which facilitates transmit and receive data processing in terms of a vehicle network of the sensors and the application system are provided. The apparatus for processing the sensor data for the vehicle using the XML includes a plurality of vehicle sensors installed inside the vehicle for detecting a change of physical quantity and providing a detection signal; a sensor transducer for converting the detection signal of the vehicle sensors to an electrical analog signal; a signal conditioning unit for amplifying the electrical analog signal to a measurable signal; an Analog / Digital Converter (ADC) for converting the amplified analog signal to sensor data of a digital signal; a frame generator for generating and providing the sensor data converted to the digital signal per frame; and a sensor data converter comprising a Dynamic data Exchange Channel (DEC) for batch-processing the sensor data input from the frame generator per frame, in an XML format. The DEC of the sensor data converter defines a structure of the sensor data using a schema of the XML and converts the sensor data format to the XML format at the same time.

The invention relates to a fault distance measurement method of a T-type power transmission network and application of the fault distance measurement method. The T-type power transmission network has three lines including L1, L2 and L3, three nodes located on the ends and capable of recording fault data and one T node which cannot record fault data, wherein the three nodes capable of recording the fault data include P1, P2 and P3. The lines are simple impedance models. When faults occur, oscillographs can record fault waveforms of all ends, are not synchronous and have certain phase differences. The method includes the following steps of judging a fault starting point, carrying out digital filtering on the electric analog quantity collected by the oscillographs, carrying out positive-sequence component calculation, simplifying the T-type power transmission network to be a double-end network, carrying out result judgment on fault distances including d1, d2 and d3 and correction coefficients including k1, k2 and k3 on the lines including L1, L2 and L3 to obtain correct fault distance measurement. The T-type power transmission network fault distance measurement method can be applied to multi-end fault distance measurement of a tree-form power transmission network.

A system on a chip (SoC) camera system includes a pixel array which has a color filter and converts an optically photographed image to an electrical analog image signal, an analog signal processing unit for adjusting the electrical analog image signal outputted from the pixel array to a predetermined level to thereby output a digital image signal, and a digital signal processing unit for performing white color compensation and color revision to make the digital image signal close to an original image, wherein the digital signal processing unit is integrated with the pixel array and the analog signal processing unit in one chip. The SoC camera system employs a complementary color filter adopting a progressive scanning scheme of reading all pixels at one time and outputting color signals to thereby obtain an image having improved resolution and color sensitivity.

The system includes an array of transducers that simultaneously senses multiple intralumenal pressures, a data acquisition module that acquires and stores samples of the measured pressures, software routines for signal analysis, a software module for multi-dimensional data display presentations, and a software module to perform pattern recognition on the acquired data set to identify potential maladies that may be indicated by the analysis. The transduction elements are cylindrical segments that deform according to the circumferential pressures encountered. Distributing a quantity of these sensor segments at desired locations along a flexible support structure and providing a flexible sheath over the entire length forms the sensor array. Measuring the sensor deformation provides an electrical analog of the pressure causing the deformation. Acquiring these measurements in a suitable data acquisition and processing unit, including a display, printing, and plotting capability, completes the hardware elements. Integrated software modules complete the system.

The invention discloses a vehicle obstacle avoidance laser radar waveform extraction method, a laser radar and a medium. The method comprises the following steps of receiving an optical signal at a focal plane through a photodetector, and performing photoelectric conversion to obtain a laser radar electrical analog signal; converting the analog signal into an echo digital waveform by a high speedAD and a modulation circuit; storing the digital waveform online, and acquiring an echo interval of the effective waveform online by sliding window filtering; and integrating the effective waveform toobtain a target center-of-mass position. The invention relates to a vehicle obstacle avoidance laser radar waveform extraction method which can analyze the information of all the sampling points on afull waveform data channel by acquiring all laser echo signals on a laser transmission channel during single collection based on a laser echo full waveform collection technology system to obtain multi-pulse multi-center-of-mass positions, thus achieving centimeter-level ranging accuracy.

The invention relates to wireless biotelemetry of low level bioelectric and biosensor signals by directly modulating the backscatter of a resonant circuit. Low level electrical analog or digital signals are directly applied to a resonant circuit containing a voltage-variable capacitor such as a varactor diode, that proportionally shifts the resonant frequency and so amplitude of radiofrequency backscatter in a way that represents analog bioelectric or biosensor waveform data. By strongly driving the resonant circuit with a radiofrequency source, a voltage variable capacitance can be caused to amplify the bio-signal level by a parametric process and so provide sufficient sensitivity to telemeter for low millivolt and microvolt level signals without additional amplification. A feature of the device is its simplicity and that it accomplishes both modulation and preamplification of low level sensor signals by the same variable capacitance circuit which reduces the device size and power consumption.

The invention discloses an all-solid-state control device and method for star-delta soft handover of a three-phase motor winding, belonging to the technical field of motor and movement control. The device comprises a detecting unit, a singlechip control unit, a driving control unit, a triggering unit, a contactor, controllable silicon, other elements of a main circuit and a connecting wire, wherein the detecting unit is connected with the singlechip control unit, and is used for acquiring and processing an electric analog quantity signal for a singlechip; the singlechip control unit is used for outputting a command to the driving unit and the triggering unit, and controlling the contactor and controllable silicon respectively; and the contactor is connected with the motor three-phase winding after being connected in series with the controllable silicon to construct star connection and angle connection. The control method comprises the following steps of: judging star connection or angle connection by detecting and calculating a load rate beta with the singlechip control unit; transmitting a signal to the triggering unit; and controlling the controllable silicon to realize star-delta soft handover according to a soft handover triggering control strategy, so that current and torque impact in the star-delta handover process can be restrained in a short period of time.

The present invention discloses an arc light protective device with light intensity signal recording function. The device comprises an arc light host unit, an arc light collection unit, arc light sensors, an arc light transmission fiber and a data transmission fiber. The arc light sensors are installed in the busbar room and the switch gear room of a medium and low voltage switch cabinet, the light intensity signals collected by the arc light sensors are transmitted to the arc light collection unit through the arc light transmission fiber, the arc collection unit is configured to perform photovoltaic conversion and AD sampling of the light intensity signals, and the sampling result is transmitted to the arc light host unit through the data transmission fiber; and after the arc light host unit receives the arc light analog signals, the arc light host unit performs arc light protection logic discrimination through combination of the electrical capacity signals. When the arc light faults happen, the device can record the electrical analog quantity prior to and after the protection motions and can record the light intensity analog signals so as to perform effective analysis of the transient process having faults and recover the whole fault evolution process. The present invention further discloses an arc light protective method with light intensity signal recording function.

A transparent lens microphone comprises (a) a refractive eyeglass lens; (b) a sound sensitive coating on an outer surface of the refractive lens; and (c) electrical contacts connected to the sound sensitive coating so as to provide an electrical analog signal representative of an acoustic signal striking the outer surface of the transparent lens microphone.

Provided is a surveillance camera including an optical system, an irradiator; an illuminance sensor, a photoelectric converter, an analog-digital converter, and a main controller. The optical system includes a lens. The irradiator irradiates a wave, different from a visible light ray, in a night mode. The illuminance sensor is installed in a light receiving direction different from a light receiving direction of the optical system. The photoelectric converter is configured to convert light from the optical system into an electrical analog image signal. The analog-digital converter is configured to convert the analog image signal from the photoelectric converter into a digital image signal. The main controller is configured to control the surveillance camera to switch between a day mode and the night mode according to gradation of the digital image signal and illuminance sensed by the illuminance sensor.

An energy generator using a potential energy gradient applied to a non-Maxwellian gas occupying and restricted to a volume, to generate a temperature difference between regions in this volume. This temperature difference occurs in the absence of any flow of particles in or out of this volume. The volume can be embodied by a semiconductor and particles, by electrons or holes in the semiconductor. Electrical power can be generated from the temperature difference by connecting a Seebeck device across it or by using the temperature difference to drive an electrical analog of the fixed-vane Crookes radiometer to propel electrical carriers. When two such Crookes radiometers are formed across a junction, electrons and holes can be driven toward each other in the absence of any external voltage source, thereby producing electromagnetic radiation. Applications include heating, cooling, electrical energy production and lighting.

The invention discloses a configurable microwave photon channelization receiving device. The device includes an optical pulse sequence generator, an optical pulse shaping module, an electro-optic intensity modulation module, a second wave division multiplexing module, a photoelectric conversion module, an electrical filter module, an electrical analog to digital conversion module, a digital signalprocessing unit and a clock synchronization module. The device can simultaneously realize the multichannel receiving and analog-to-digital conversion of broadband signals, that conventional optical channelization receiving devices subject to passband bandwidth limitation when adopting devices like optical filters can be avoided; convenience can be provided for further digital processing and storage by converting receiving signals into digital signals; and the center frequency and bandwidth of each channel can perform configuration by adjusting the tap intervals of a multi tap optical pulse shaper and the bandwidth of an electric filter.

A system and method for protecting an output transistor in an audio amplifier output stage includes a protection circuit that protects the output transistor from excessive currents and voltages, and does not interfere with the normal operation of the output transistor. The protection circuit generates an estimate of the power dissipated by the output transistor, applies this estimate to an electrical analog of the thermal time constants of the transistor to obtain an estimate of the temperature differential between junction and case, compares this differential to a limit, which is a function of transistor case temperature.

A transparent lens microphone comprises (a) a refractive lens; (b) a sound sensitive coating on an outer surface of the refractive lens; and (c) electrical contacts connected to the sound sensitive coating so as to provide an electrical analog signal representative of an acoustic signal striking the outer surface of the transparent lens microphone.

An apparatus and a method for processing sensor data for a vehicle using an unified data format eXtensible Markup Language in process of data communication between various vehicle sensors and a vehicle application system, which facilitates transmit and receive data processing in terms of a vehicle network of the sensors and the application system are provided. The apparatus for processing the sensor data for the vehicle using the XML includes a plurality of vehicle sensors installed inside the vehicle for detecting a change of physical quantity and providing a detection signal; a sensor transducer for converting the detection signal of the vehicle sensors to an electrical analog signal; a signal conditioning unit for amplifying the electrical analog signal to a measurable signal; an Analog / Digital Converter (ADC) for converting the amplified analog signal to sensor data of a digital signal; a frame generator for generating and providing the sensor data converted to the digital signal per frame; and a sensor data converter comprising a Dynamic data Exchange Channel (DEC) for batch-processing the sensor data input from the frame generator per frame, in an XML format. The DEC of the sensor data converter defines a structure of the sensor data using a schema of the XML and converts the sensor data format to the XML format at the same time.

The invention discloses an arc welding monitoring system and method. The system includes: an electrical signal acquisition module for acquiring electrical signals in the arc welding process; an AD conversion module for acquiring the electrical signals acquired by the electrical signal acquisition module, and The electrical signal performs analog-to-digital conversion; the FPGA control module is used to send the corresponding analog-to-digital conversion control signal, and performs probability density statistics, effective value calculation and welding time statistics according to the data output by the AD conversion module; the first storage module is used for Store the data calculated or counted by the FPGA control module; the ARM processing module is used to call the data in the first storage module, and perform curve drawing and corresponding digital information on the called data through the preset statistical resolution and waveform setting parameters Statistics; a display module, used for displaying the curve and digital information output by the ARM processing module. The equipment cost can be effectively reduced, the volume of the equipment can be reduced, and the process monitoring can be extended to the actual welding production environment.

The driver circuit comprises a signal generator having a frequency control input, an amplitude control input and a signal output, an output stage having a signal input and a load output, and also an amplitude controller having an amplitude input, an amplitude output and a voltage measuring input. The signal generator is configured to output at the signal output thereof an at least occasionally periodic electrical analog signal having a signal frequency prescribed by a frequency control value present at the frequency control input, and having a voltage and / or current amplitude prescribed by anamplitude control value present at the amplitude control input. The output stage is configured, by means of an electrical circuit involving the selfsame load output, to drive a load current having a current intensity dependent on a signal voltage and / or a signal current of an electrical input signal present at the signal input and also to provide at the selfsame load output a load voltage having avoltage level dependent on the current intensity of the load current. Furthermore, the amplitude controller is configured to determine recurrently an amplitude deviation between an amplitude actual value present at the amplitude input and an amplitude setpoint value. Moreover, the amplitude controller is configured to determine recurrently an indicator value that signals whether an absolute valueof a measurement voltage present at the voltage measuring input is excessively high, namely whether the absolute value has exceeded a threshold value, and, using the indicator value, to determine anamplitude control value, in such a way that in the case where an absolute value of the measurement voltage is excessively high, successive amplitude control values of the amplitude control sequence are reduced, and also to output at the amplitude output an amplitude control sequence of amplitude control values calculated successively in time. The signal output of the signal generator in turn is electrically connected to the signal input of the output stage and the load output thereof is electrically connected to the voltage measuring input of the amplitude controller. Furthermore, the amplitude output of the amplitude controller is electrically connected to the amplitude control input of the signal generator.

The invention relates to the technical field of undersea observation networks, in particular to a submarine cable electrical simulation device for a submarine observation network, which is used for simulating the structure and function of an undersea observation network submarine cable. The device comprises a high-voltage input interface, a plurality of distributed submarine cable simulation units, a plurality of branch units and a plurality of ground fault simulation units which are sequentially connected in series. The high-voltage input interface is used for receiving a high-voltage power supply provided by a shore base station; the distributed submarine cable simulation unit is used for simulating submarine cable electrical distribution parameters in unit length. The branch units are connected with the main base station and are used for providing electric energy for the main base station and carrying out fault isolation on the main base station; and the grounding fault simulation unit is used for simulating a submarine cable grounding short-circuit fault at any position.

The invention relates to an electrical analog acquisition device. The device comprises an analog board card, at least one functional board card and a backplane which is electrically connected with theanalog board card and the functional board cards separately. The invention further relates to an impedance adaptive numerical compensation system and method. The system comprises an electrification detection module, a signal jump detection module, a logic or module, a signal high-level statistics module and an analog numerical compensation module. Accordingly, a voltage signal of the analog boardcard can be shared by the multiple functional board cards, synchronization of voltage and current acquisition of each monitoring line is guaranteed, the functional board cards are same in configuration, and the cost of production and maintenance is greatly reduced. By automatically detecting the input impedance, the acquired electrical analog values are compensated, and the accuracy of electricalanalog acquisition is guaranteed.

Using vacuum tube, the analog output device of digital audio system realizes gain output of audio and analog output of digital audio signal. The output device includes following parts: digital signal processing part for digital processing audio signal; gate drive for driving voltage to pass through vacuum tube in order to realize gain output of digital audio signal; gain part with vacuum tube for electrical analog quantities; the vacuum tube converts digital audio signal to analog signal with gain. Through loudspeaker, the audio output part outputs the gained analog audio signal.

The invention discloses a distribution network terminal inspection fault simulation method. The method comprises the following steps that S1, a communication network and a remote control unit are established, and related components are set to build a set of complete communication network; S2, a voltage and current source function unit is established for performing circuit breaker position detection and system wiring topology analysis; S3, a secondary circuit operation and maintenance function module is established; S4, a circuit breaker cabinet electrical test function module is established; S5, a primary cable electrical test function module is established; and S6, in a system operation process, voltage electrical analog quantity information and switch element position indication information of different systems in a normal fault-free working condition and an abnormal fault condition are acquired in different working states through fault simulation. By implementing the method, multiple faults and recovery functions are truly simulated, actual conditions are met, and interactive experience is true; and the method is low in cost and high in efficiency.