468 results about "Multiway switching" patented technology

The invention relates to a D trigger used for single particle upsetting resistance and single particle transient pulse in the technical filed of an integrated circuit, comprising two multichannel switches, two delay circuits, two protecting gate circuits and three inverters; wherein, the multichannel switches are used for forming a feedback loop for latching data; the delay circuits are used for generating signals in delay modes; the protecting gate circuits are used for filtering voltage transient fluctuation of the input signals; in the feedback loop of the D trigger, data input signal D and the delayed mode thereof enter the protecting gate circuit; and the output signals of the protecting gate circuit filter the delayed voltage transient fluctuation of the data input signal D and the width of the voltage transient fluctuation is not wider than the delay of the delay circuit. The invention can be applied to application occasions needing higher radiation resistance, leads the single particle upsetting resistance and single particle transient pulse performance of D trigger to reach the same level as a time sampling D trigger; and simultaneously, the increasing of the unit area is less than that of the time sampling D trigger and the working speed is superior to that of the time sampling D trigger.

The invention relates to one near field communication cell phone with multiple path switch interface, which comprises power module, base band chip, SIM card and antenna and is characterized by the following: comprising NFC module composed of circuit connection inner control circuit and multi-path switch interface circuit; the said multiple switch interface circuit comprises power control circuit, regular interface circuit and double interface circuit. The invention provides one near field communication cell phone and its power and communication method with multiple switch interfaces.

A metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., electrical cables, and bus bars in predetermined positions for allowing front access and/or rear access to them. One or more compartments are configured for enabling the electrical cables to enter into and/or exit out from the electrical enclosure for allowing front and/or rear access to the electrical cables. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components. One or more infrared windows and inspection windows are positioned on a front side and/or a rear side of the switchgear assembly for scanning and providing a visual indication of the electrical components, the electrical cables, and the bus bars.

Multiple systems for delivering satellite signals are described. An apparatus in accordance with the present invention comprises a receive antenna, including at least one low noise block amplifier (LNB); and a module, coupled to and proximate the receive antenna, the module comprising a multiswitch, coupled to the LNB, for directing the satellite signal received by the LNB to an output of the multiswitch, at least one tuner, coupled to the output of the multiswitch, for tuning to a specific portion of the satellite signal, the specific portion of the satellite signal selected based on commands received from a new Integrated Receiver Decoder (IRD), at least one demodulator, coupled to the at least one tuner, for demodulating the specific portion of the signal into a plurality of demodulated signals, and an interface for delivering a specific demodulated signal to the new IRD, wherein the specific demodulated signal is selected based on the commands received from the new IRD, and the specific demodulated signal is mapped to a new address based on a private channel number associated with the new IRD.

Provided are a method and a device for tunnel advance geology forecast with tunnel face blasting as a focus. The method comprises the steps of (1) drilling holes on two lateral walls at the inlet position in a tunnel; (2) filling a coupling agent into the drilled holes, and attaching weave detectors to the walls of the drilled holes; (3) winding a trigger circuit copper wire on cartridged explosive, and placing the cartridged explosive into a blasted hole of the tunnel face; (4), enabling two three-component weave detectors buried in a tunnel hole to receive reflective earthquake wave signals; (5) sending the signals to an amplifier after the signals are selected by a multi-way switch; (6) enabling the amplifier to amplify the signals and then transmit the signals to an analog/digital (A/D) converter through wireless transmission; (7) enabling a wireless communication module of a control chamber to receive a wireless signal and then transmit the wireless signal to a host, and recording the signal; and (8) achieving geology forecast through an processing program installed in the host. The device comprises signal acquisition, wireless communication and control and a data analyzing system. The method is simple, easy and low in cost, can be used for advance geology forecast of tunnels, holes and roadway underground spaces, and achieves automation and normalization of geology forecast.

The invention relates to a mono-dual frequency electromagnetic flowmeter excitation control system based on linear power supply, comprising a constant current source circuit, a current bypass circuit,an exciting coil driving circuit, an excitation time sequence generating circuit and a galvo circuit. A high voltage power supply is adopted for supplying power, the constant current source is constructed by linear power supply to supplying electricity for the exciting coil driving circuit, the current bypass circuit is jointed in parallel with the input/output end of the linear power supply to solve the problem of energy dissipation, the exciting coil driving circuit is composed of an H bridge and a control circuit thereof, the galvo circuit is bridge-jointed between the lower end of the H bridge and a reference ground, and a digital signal processor (DSP) is used for controlling multiple switches and an electrical level matching device to generate time sequence and control the action ofthe exciting coil driving circuit. The excitation control system can obviously improve excitation frequency range and excitation frequency preciseness, is suitable for single frequency high frequencysquare wave excitation or dual frequency square wave excitation, and can simultaneously provide more exact current detection to correct the flow signal processing result.

The invention discloses a flexible three-dimensional force touch sensor of multi-fingered hands of a human-simulated robot and a three-dimensional force detecting system, relating to the field of touch sensors of robots. The invention aims at solving the problem that more touch sensors only can acquire normal force but can not detect the normal force and the force simultaneously like the human hands. A sensor body consists of a force-transferring hemispherical layer, a flexible top-level electrode layer, a composite material QTC (Quantum Tunneling Composites) with quantum channel effect and a flexible bottom-level electrode layer which are arranged in sequence from top to bottom; a signal acquisition circuit consists of a mixed-signal array programmable on-chip system and an analog multiplex selection module; the on-chip system comprises a digital logic module, an analog digital conversion module ADC, a digital analog conversion module DAC, an analog signal register I, an analog signal register II, a voltage amplifying circuit and a multi-way switch; and the analog multiplex selection module comprises an analog multi-way switch I and an analog multi-way switch II. The invention is used for the touch sensor for detecting the three-dimensional force of the multi-fingered hands of the human-simulated robot.

Multiple systems for delivering satellite signals are described. An embodiment in accordance with the present invention comprises a receive antenna, including at least one low noise block amplifier (LNB), and a module, coupled to and proximate the receive antenna, the module comprising a multiswitch, coupled to the LNB, for directing the satellite signals received by the LNB to a plurality of outputs of the multiswitch, a plurality of tuners, respectively coupled to the outputs of the multiswitch, for tuning to a plurality of specific portions of the satellite signals in a respective fashion, the specific portions of the satellite signals selected based on commands received from a plurality of receivers, and an interface for delivering the specific portions of the satellite signals to the plurality of receivers, wherein the specific portions of the satellite signals are combined into a single combined signal and delivered to the plurality of receivers on a single output of the interface.

The invention discloses a device for detecting a storage battery, comprising a CPU, an operational amplifier, a multi-way switch, a digital/analog (D/A) converter, a high-power MOS tube, a coupling capacitor, a programmable bandpass filter and an analog/digital (A/D) converter. The high-power MOS tube is connected on a storage battery discharge detection circuit in series. The CPU is used for controlling discharge of the storage battery so as to generate excitation current. The detected current signals and voltage signals are amplified by the operational amplifier after the coupling capacitorsubtracts the direct current component, and the signals are transmitted to the A/D converter to be changed into digital signals after the programmable bandpass filter gets rid of the interference signals, then the digital signals are transmitted to the CPU to be processed and complex impedance of the storage battery under the corresponding frequency can be obtained after arithmetical operation. The CPU can control the MOS tube via the D/A converter to change the waveform and frequency of the discharge current of the storage battery so as to realize measuring a plurality of frequencies of the storage battery. A detecting method using the device can be used for detecting the storage battery by an AC discharge method in multiple frequency points.

This invention relates to chip pin switch or short circuit test machine, which comprise the following: chip socket; positive or negative current generator circuit to provide positive or negative current to the chip pin; multi-path switch control circuit to control the rest chip pin ground connection; voltage extraction circuit to extract the output voltage from the chip pin; threshold voltage generation circuit to generate positive or negative threshold voltage; voltage comparer to compare the pin output voltage and threshold voltage and to output comparison results; control circuit to whole control the above circuit; display device to receive the signals of the above control circuit and to display the output signals.

A system and method for providing signals from a plurality of satellites to a plurality of receiving units is disclosed. The system and method of the present invention make efficient use of multi-switches to enable multiple receiving units to seamlessly alternate between channels of various satellite signals, and optionally between satellite signals and terrestrial antenna signals. In basic form, first and second receptors, such as DISH satellite LNBs, are connected to input ports of primary Digital Broadcast System multi-switches having multiple input ports and output ports. The output ports of the first such primary multi-switch are conductively connected to first input ports of at least two secondary multi-switches, and the output ports of the second such primary multi-switch are conductively connected to second input ports of the same secondary multi-switches. The outputs of the secondary multi-switches are provided to receiving units. The multi-switches are matched such that poling and circuitry components are compatible and enable the seamless alternation between channels originating from different signals.

The invention discloses an automatic testing system of a temperature compensating crystal oscillator, comprising a power supply, an incubator, a data transmission module, a plurality of crystal oscillating gate modules, a display module and a center control module, wherein the crystal oscillating gate modules comprise a plurality of testing control boards, a plurality of groups of decoders and a plurality of switches, wherein the testing control boards are arranged in the incubator; each testing control board is provided with a plurality of crystal oscillators to be tested; the center controlmodule comprises a computer, a frequency scale, a frequency meter and a temperature control unit, wherein the frequency meter is respectively and electrically connected with the frequency scale and the computer and provided with an interface connected with the crystal oscillators to be tested; and the computer is electrically connected with the crystal oscillators to be tested respectively through the crystal oscillating gate modules and the data transmission module and is also electrically connected with the incubator through the temperature control unit. The invention can test and compensate the crystal oscillator in large scale and high efficiency.

The invention discloses a magnetic suspension bearing control power amplification integrated system. An FPGA chip is used as a core processor. The system comprises an FPGA control circuit (1), a full bridge circuit and an isolation driving part thereof (2) and an analog-to-digital conversion circuit (3). The analog-to-digital conversion circuit (3) converts a rotor displacement feedback signal (32) which is provided by a displacement sensor on a magnetic suspension bearing and a coil current feedback signal (31) which is provided by a coil current sensor into digital signals, and transmits the digital signals to the FPGA control circuit (1); and the FPGA control circuit (1) performs digital calibration and the operation of a suspension PID control algorithm, a current PD correction algorithm and a three-level pulse width modulation algorithm on the digital signals to generate multi-path switching signals, and controls the coil current through the full bridge circuit and the isolation driving part thereof (2). The FPGA control circuit (1) integrates a suspension controller, a power amplifier stage controller and the function of conditioning the current and displacement signal, fully utilizes the logical resources in the chip and reduces the circuit volume and power consumption.

The present invention discloses detecting device and method for the earthing fault in DC system. The device includes microprocessor and several current transformers. The microprocessor is connected to low frequency signal source, detecting bridge, display alarm and S/H circuit. The input of the sync link is connected to the positive and negative buses of the DC system, and the output is connected via isolating link to the input of the multiway switch. The method includes monitoring the insulating status of the DC system with the double asymmetrical bridge; judging the earthing polarity, and sending signal to the microprocessor for starting the low frequency signal source and applying stable low frequency sinusoidal or cosine to the DC system in case of finding out earthing fault; and performing looped network branch treatment when the current in the current transformers is greater than 1 A, or else performing common branch treatment; and other steps.

The invention relates to a system for testing the performance of an ISM (industry, science and medicine) frequency range communication product and a testing method, and in particular relates to a system for testing the performance of a communication product and a testing method, and the problem of low testing accuracy of the existing method for testing the performance of the ISM frequency range communication product is solved. In the system provided by the invention, N transmitters to be tested and a reference transmitter are accessed to a chain through a No.1 multi-way switch and connected with N receivers to be tested and a reference receiver after passing through an adjustable attenuator, a fixed attenuator, a combiner and a shunt; and an oscilloscope displays the waveform of each receiver. In the method provided by the invention, the performance detection of the ISM frequency range communication product to be tested is realized by testing the sensitivity of the receivers to be tested, the transmission power of the transmitters to be tested, the same-frequency interference-resistant performance of the receivers to be tested, the multi-address interference-resistant performance of the receivers to be tested and the high and low temperature-resistant performance of the product to be tested. The invention is suitable for testing the performance of the ISM frequency range communication product.

A display device is disclosed to include a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels coupled to the data lines and gate lines. The data lines include first and second data lines, and the pixels include first and second color pixels. The display device also includes a data driving circuit to generate data voltages through a plurality of output channels, a gate driving circuit coupled to the gate lines, and a timing controller to generate control signals to the data driving circuit and the gate driving circuit. The display device further includes a demultiplexer switching circuit with first demux switches to supply, when turned on, the data voltages from the output channels to the first data lines, and second demux switches to supply, when turned on, the data voltages from the output channels to the second data lines.

The invention discloses a method for shortening verification time of hardware Trojan in an integrated circuit test. A special structure comprises a gate cell and a multi-way switch, wherein the multi-way switch has a test input signal TI and a Trojan test mode enabling signal EN; the gate cell is used for performing logical adhesion with target nodes in the tested integrated circuit, and the type of the gate cell is decided by occurrence probability 0 and 1 of the nodes; the special structure MFTD is inserted by the following steps of: firstly, setting a probability threshold value Pth; classifying all nodes of the tested integrated circuit into the nodes of which the overturning probability is greater than the Pth and the nodes of which the overturning probability is less than the Pth; and then inserting the special structure MFTD by circularly selecting the target nodes until the overturning probability of all the nodes is greater than the Pth. According to the invention, the MFTD is inserted into the design stage of the integrated circuit, so that the activation degree of the hardware Trojan is effectively improved in the test, and the verification time of the hardware Trojan is shortened.

The digestive tract remote measuring capsule electromagnetically positioning system includes sealed capsule with three-axis magnetic field sensor, signal processing module and radio communication module; three extracorporeal ring static magnetic field exciting coils; and extracorporeal data record instrument comprising monochip computerized control circuit, constant-current source circuit, multiplex switch, radio communication module, memory and power source module. During system operation, the three coils are fixed onto the surface of body to produce magnetic field under the excitation of the current from the instrument successively, the intracorporeal capsule detects the magnetic fields and produces and emits digital signal, and the instrument receives, saves and processes the signal, so as to obtain the 3D locus of the capsule.

A bandwidth-limited system for delivering satellite video signals. The system comprises a receive antenna that includes at least one low noise block amplifier (LNB), and a module, coupled to and proximate the receive antenna, the module comprising a multiswitch, coupled to the LNB, for directing the satellite signal received by the LNB to an output of the multiswitch a tuner, coupled to the output of the multiswitch, for tuning to a specific portion of the satellite signal, the specific portion of the satellite signal selected based on commands received from a new Integrated Receiver Decoder (IRD), a demodulator, coupled to the tuner, for demodulating the specific portion of the signal into a plurality of demodulated signals, and an interface for delivering a specific demodulated signal to the new IRD, wherein the specific demodulated signal is selected based on the commands received from the new IRD, and the commands and the demodulated signal are carried on a single connection between the at least one IRD and the interface.

Monitoring device is composed of resistance divider circuit, multiway switch circuit, difference operational amplification circuit, A/D conversion circuit, single chip and CAN communication circuit connected in sequence and communication interface to main controller of fuel cell. The device is capable of monitoring voltages of 59 single cells in fuel cell pile. Combining multiple disclosed monitoring devices with communication between main controller and each equipment realized through CAN network can monitor more cells. Features are: small size, low cost, easy of expansion, high measuring accuracy (maximum absolute error less than 0.08V) and quick measuring speed (time for measuring 59 single cell is less than 0.05 second).

The invention requests to protect a bio-electrical impedance imaging hardware system and relates to medical equipment. The bio-electrical impedance imaging hardware system comprises an upper computer 1, a USB interface chip 2, a D/A converter, a filter and pressure flow switching circuit 3, multiplex switches 4 and 6, a tested object 5, an amplifying, filter and A/D switching circuit 7 and an FPGA controller 8. The core component of the system is the FPGA controller and comprises a constant flow source control module, a multiplex switch selecting control module, an A/D converting sampling control module, a digital phase sensitive detection module, a USB transmission control module and a master control module. The system uses the FPGA technology to realize the functional modules and improves integrated level, expandability and upgradability of the circuit so as to greatly reduce the volume and power consumption of the imaging hardware system, reduce the cost and improve the anti-interference performance.

The invention relates to a device for detecting the leakage of an oil-gas pipe network based on type-2 fuzzy logics and a method. The device comprises a data acquisition unit, a signal filtering plate, an A/D (Analog to Digital) conversion unit, an FPGA (Field Programmable Gate Array), a level conversion unit and an upper computer, wherein the data acquisition unit comprises a pressure sensor, a flow sensor, a density sensor, a digital sensor which is used for acquiring the state of a pump and a digital sensor which is used for acquiring the opening degree of a valve; the signal filtering plate comprises a filter, a multi-way switch and a signal amplification circuit; and output terminals of all the sensors and an output terminal of the digital sensor which is used for acquiring the opening degree of the valve are all connected to an input terminal of the filter, an output terminal of the filter is connected with one terminal of the multi-way switch, the other terminal of the multi-way switch is connected with an input terminal of the signal amplification circuit, an output terminal of the signal amplification circuit is connected with the FPGA through the A/D conversion unit, and the FPGA is connected with the upper computer through the level conversion unit. According to the device and the method, the leakage detection on the oil-gas pipe network is carried out by adopting a type-2 fuzzy logic system, the current state of the pipe network is judged, and thus, the accuracy of detection can be improved.