542 results about "Micropower" patented technology

A varying magnetic field excites slight vibrations in an object and a radar sensor detects the vibrations at a harmonic of the excitation frequency. The synergy of the magnetic excitation and radar detection provides increased detection range compared to conventional magnetic metal detectors. The radar rejects background clutter by responding only to reflecting objects that are vibrating at a harmonic excitation field, thereby significantly improving detection reliability. As an exemplary arrangement, an ultra-wideband micropower impulse radar (MIR) is capable of being employed to provide superior materials penetration while providing range information. The magneto-radar may be applied to pre-screening magnetic resonance imaging (MRI) patients, landmine detection and finding hidden treasures.

A wireless device including a transceiver that utilizes a power supply is described. The wireless device includes a Global Positioning System (“GPS”) section having a plurality of GPS subsystems and a power controller in signal communication with the power supply and GPS section, wherein the power controller is configured to selectively power each GPS subsystem from the plurality of GPS subsystems.

The invention discloses a microgrid real-time energy optimizing and scheduling method in a parallel running mode. The method comprises the following steps of: firstly, dividing 24 hours in a day into a peak period of time, a general period of time and a trough period of time according to the load condition of a large power grid; and then, monitoring the working state of an accumulator in a microgrid in real time in the real-time process of the microgrid and adopting different energy optimizing strategies according to different periods of time and different working states of the accumulator soas to confirm the active power output of various schedulable micro power supplies, the charging and discharging power of the accumulator and scheduling instructions of the active power interactive with the power grid and the passive power of a passive adjustable power supply in the microgrid. The microgrid suitable for the invention comprises a reproducible energy generator, the schedulable micropower supplies and the accumulator. The invention not only can improve the economy and the reliability of the microgrid, but also can help the great power grid to cut peaks and fill troughs and is favorable to prolonging the service life of the accumulator.

A waterless power generator, particularly a waterless electrical power generator and a passively controlled process for producing electricity with a fuel cell using stoichiometric amounts of a solid hydrogen fuel and byproduct water vapor produced by the fuel cell to generate hydrogen gas. A fuel cell reaction of hydrogen and oxygen produces electrical energy as well as by-product water which diffuses back into the power generator as water vapor to react with the hydrogen fuel, producing more hydrogen gas. This generated hydrogen gas is then used as a fuel which allows the fuel cell to generate additional electrical power and additional water. The process runs without any attached water source or water supply other than the water which is produced by the fuel cells themselves.

The invention provides an intelligent electronic label system which uses a highly integrated and low cost wireless micropower single chip transceiver to manufacture an intelligent label and a reader-writer respectively. The intelligent label is in a dormant state for a long time and works for an instant after a periodical revival, the reader-writer seizes the instant after the intelligent label is revived to establish a communication contact with the intelligent label through different modes, thereby realizing control management of a system to the intelligent label and other terminal devices connected with the intelligent label with very low average power consumption. The invention also makes that a common button cell battery is not necessary to replace for a plurality of years through flexible regulations to the dormant cycle of the intelligent label, an operating channel, an operation mode, etc. Meanwhile, the invention also greatly accelerates response speed of the intelligent label. The intelligent electronic label system has a simple structure, a long reading and writing distance, low cost, and flexible and convenient use; therefore, intelligent electronic label system can be used as a wireless electronic vehicle license plate, an identification card, etc., and can be used for control management to vehicles, staffs, materials and other remote terminal equipment.

The invention discloses a micropower wireless network ad-hoc networking method based on multi-channel frequency hopping. A coordinator node is used for starting building of a whole sub network, an in-network routing node is controlled to conduct hop-by-hop grouping in a specified period to start broadcast networking of out-network routing nodes in the first hop range, manage complete routes from itself to the routing nodes in the region of the in-network routing node and conduct link maintenance and transparent transmission of application messages. The routing nodes are used for conducting multi-channel passive scanning receiving, automatically select an optimized route by capturing the whole route from a coordinator to the neighborhood nodes in the first hop range and actively report the whole captured route to the coordinator in a communication link active period. The whole networking process is quick, simple, free of manual participation and the like. Meanwhile, the coordinator controls the communication link active period, effectively prevents broadcast storm, prevents the out-network routing nodes from actively starting access applications periodically in full band and can share spectrum resources with other devices in a day parting mode. System expandability and scalability are good.

A gatherer device of wireless ad-hoc network meter reading system comprises a processor unit, a 485 bus interface unit, a wireless transmitting-receiving unit, and a power supply managing unit; wherein the processor unit is responsible for operation and control of the whole device, the 485 bus interface unit is used for connecting one or multiple electric meters, the wireless transmitting-receiving unit is responsible for interacting data and commands with a concentrator of the wireless ad-hoc network meter reading system, and the power supply managing unit supplies power for the whole device. An operation method of the gatherer device comprises that a command is received by the wireless transmitting-receiving unit and transmitted to the processor unit for processing, that the processor unit sends a request frame to an electric meter, that the processor unit receives a response frame from the electric meter and analyzes the response frame to acquire information of electricity consumption, and that finally the information of electricity consumption is returned to the concentrator through the wireless transmitting-receiving unit. The device and the method in the invention solve problems that the prior micropower wireless communication meter reading manners have much channel interferences, and are relatively low in security, relatively short in communication distances and not well in penetrating capabilities. Furthermore, the device has the advantages of low cost, high cost performance, good instantaneity, safety and reliability, and use and maintenance conveniences.

Analog computational arrays for matrix-vector multiplication offer very large integration density and throughput as, for instance, needed for real-time signal processing in video. Despite the success of adaptive algorithms and architectures in reducing the effect of analog component mismatch and noise on system performance, the precision and repeatability of analog VLSI computation under process and environmental variations is inadequate for some applications. Digital implementation offers absolute precision limited only by wordlength, but at the cost of significantly larger silicon area and power dissipation compared with dedicated, fine-grain parallel analog implementation. The present invention comprises a hybrid analog and digital technology for fast and accurate computing of a product of a long vector (thousands of dimensions) with a large matrix (thousands of rows and columns). At the core of the externally digital architecture is a high-density, low-power analog array performing binary-binary partial matrix-vector multiplication. Digital multiplication of variable resolution is obtained with bit-serial inputs and bit-parallel storage of matrix elements, by combining quantized outputs from one or more rows of cells over time. Full digital resolution is maintained even with low-resolution analog-to-digital conversion, owing to random statistics in the analog summation of binary products. A random modulation scheme produces near-Bernoulli statistics even for highly correlated inputs. The approach has been validated by electronic prototypes achieving computational efficiency (number of computations per unit time using unit power) and integration density (number of computations per unit time on a unit chip area) each a factor of 100 to 10,000 higher than that of existing signal processors making the invention highly suitable for inexpensive micropower implementations of high-data-rate real-time signal processors.

The invention relates to a dual-mode heterogeneous network networking communication method for a power information collection system, and belongs to the technical field of power consumption information collection. The method comprises the following steps: S1: constructing a dual-tree network for micro-power wireless and power carriers in combination with the distribution characteristic of power collection equipment and the difference between micro-power wireless and power carrier signal attenuation; S2: evaluating, by an equipment node, the communication performance of the power carriers and the a micro-power wireless channel, and performing postorder traversal on a routing forwarding tree to discover channel selection and routing addressing; and S3: collecting, by a concentrator node, power data according to the constructed dual-tree network. According to the method of the invention, the concentrator is ensured to collect the power data at a relatively higher success rate through a file updating mechanism and a retransmission mechanism. By adoption of the dual-mode heterogeneous network networking communication method provided by the invention, a dual-mode heterogeneous meter reading network can be reasonably constructed, the collection success rate of the power data is greatly improved, and a certain reference is further provided for cross-network transmission of the power data.

The invention discloses an automatic meter reading method by using a micropower wireless module. The method comprises the following steps: starting micropower wireless automatic networking according to a command of a main reading module of a concentrator; at the end of networking, starting meter reading and finding a route reaching a target address; and if the route of the target address is found, starting route meter reading to read data of an electric energy meter, and if no route of the target address is found and route meter reading is failed, starting flooding meter reading. The micropower wireless module used in the method is special wireless communication equipment which is installed on an intelligent electric energy meter and is in communication connection with a micropower wireless communication module of the concentrator to automatically read various parameters of the electric energy meter. The micropower wireless module is mainly used as a data transmission channel between the concentrator and the intelligent electric energy meter. By using the micropower wireless module, automatic networking can be realized. The method is in fully dynamic routing and high in safety and reliability, and can safely and stably read data from the electric energy meter.

A micro-power stand-by system is provided which minimizes power supplied to and the utilization of a stand-by power supply circuit and the resultant production of electro-magnetic interference (EMI) during normal electronic device operation. In one embodiment, the stand-by power supply circuit includes at least one capacitor in electrical communication with at least one stand-by relay, with the capacitor electrically connected to an AC line. The capacitor powers the stand-by power supply circuit and the stand-by relay. At least one switch is located a prearranged distance from a main power supply circuit, and is electrically connected to the AC line and the stand-by relay to provide normal operation for the main power supply circuit. In another embodiment, the switch includes a stand-by switch and a main power switch which provide an inrush current limiting resistor during initial power-on for safety reasons and a bypass of the inrush current limiting resistor during normal operation, respectively.

A microthermophotovoltaic (micro-TPV) system is a novel micro power device. The system fully utilizes the high surface-to-volume ratio of a microcombustor, and is able to deliver and electrical power output of 0.5-10 W in a package of the order of centimeters. The system comprises mainly a combustor-emitter, a filter, a photovoltaic (PV) cell array, and cooling fins. The combustor-emitter functions to convert chemical energy into radiative heat energy. The filter is able to recycle a large part of the unusable energy that cannot be converted into electricity by the PV cell array. The PV cell array is used to convert radiative heat energy into electricity. The system has no moving parts. Its fabrication and assembly are relatively easy. As a result, it can be readily used as a power source of micro mechanical devices and portable devices, in which convenience and low cost reliability and ease of maintenance are the key factors of consideration.

A micropower RC oscillator having stable frequency characteristics with varying temperature includes a number of inverting circuits which are driven by an external driving voltage and connected in series with each other and an RC circuit having a resistor disposed in between a head-inverter and a tail inverter to form a closed loop and a capacitor disposed between the tail-inverter and the head-inverter. The resistor comprises a plurality of unit resistors constituting of a P+ diffusion resistor and a polysilicon resistor having opposing characteristics with respect to temperature variation at a predetermined ratio. A resistance regulator controls the resistance of the resistor by decoding an external resistance setting data to select a unit resistor that determines the oscillation frequency effectively. A driving voltage circuit receives a reference signal having the voltage level which is stable against the temperature variation by using a current source and a load having opposing characteristics with respect to the temperature variation and provides as a driving voltage of the RC oscillating circuit after increasing a fan-out capacity of the reference signal. An output level shifting circuit can be added to the rear side of the RC oscillating circuit to adjust the voltage level of the oscillation signal with the appropriate standard required at a receiving end.

The present invention relates to the positioning technology, in particular to a radio micropower network positioning technique and a positioning method. The prior positioning systems have the defects of complex structure, large investment and high operation cost, moreover, under complex environmental conditions, such as cities, the prior positioning systems cannot satisfy a lot of actual application requirements, and in order to resolve the defects, the present invention discloses the radio micropower network positioning technique and the positioning method. The present invention utilizes the positions of network nodes as references to determine the position of a mobile target according to the universal relation among signal sources, receivers, emissive power and signal intensity and the specific relation depending on the environmental characteristics. The present invention has the advantages of simple structure, low cost and mature technology, and complex measuring and calculation and electronic maps are not needed in order to satisfy the actual positioning requirement. The system is not only a positioning network but also a communication network which can transmit position information and control information, the structure is simplified, use is convenient, and the operation cost is greatly reduced.

A micropower neural amplifier with adaptive power biasing for use in multi-electrode arrays is provided. The micropower neural amplifier includes a low noise gain stage. The low noise gain stage is implemented using an amplifier and pseudoresistor elements.

A micropower passive electronic lock cylinder including an immovable cylinder body (3), a rotatable plug (1), and an electronic control circuit part is described. An electronic control circuit board (13) electrically connected with a micromotor (14) and locating switches (15, 16) is arranged in the rotatable plug (1). A lock pin (8), which is controlled by a displacement limiting cam (5) driven by the micromotor (14), moves between the immovable cylinder body (3) and the rotatable plug (1) to release or block the rotatable plug (1).

The invention belongs to the field of micropower wireless Ad-Hoc network communication and discloses a micropower wireless communication routing algorithm based on field intensity information. The algorithm is suitable for routing computation during micropower wireless network establishing and network maintenance and mainly comprises the steps of node equivalent distance computation, optimal multi-path searching, selection and tentative of multiple paths and route maintenance. The micropower wireless communication routing algorithm is efficient, reliable and low in cost and overcomes the difficulty in keeping high routing efficiency and stability caused by the characteristics of wireless communication and environment influences. The invention further discloses a micropower wireless communication center node networking method which is used for establishing a routing list according to the micropower wireless communication routing algorithm based on the field intensity information.

An integrated circuit for use in implementing a switching voltage regulator, the integrated circuit including a power switching transistor, driver circuitry and control circuitry, which is operable in a normal feedback mode or an isolated flyback mode. The integrated circuit includes shutdown circuitry for placing the regulator in a micro-power sleep mode, and can be packaged in a five-pin conventional power transistor package. The terminals of the integrated circuit regulator perform multiple functions. A compensation terminal is used for frequency compensation, current limiting, soft-start operation and shutdown. A feedback terminal is used as a feedback input when the integrated circuit is in feedback mode, and as a logic pin to program the regulator for isolated flyback operation. The feedback terminal is also used to trim the flyback reference voltage.

The invention provides a system and a method for overhead line fault location and monitoring. The system comprises a fault indicator, a concentrator substation, and a main station. The fault indicator comprises a MCU, a current transformer, a capacitance voltage divider, a signal detection circuit, an ESAM security chip, and a micropower wireless sub-node. The concentrator substation comprises a communication terminal, a micropower wireless center node, and a GPRS remote communication module. The main station comprises a GIS system, a MIS system, and a monitoring terminal. The method comprises the following steps: acquiring and calculating current and voltage signals; determining short circuit faults, and determining grounding faults through a seventh harmonic and first half wave method; and marking fault places and notifying inspection tour personnel. The system and the method are accurate in determination, good in anti-interference capability, high in security, and can effectively assist power grid maintenance operation, thereby improving power grid automation level.

The invention discloses an intermittent power supply micropower standby control circuit comprising a stand-by power supply module, a relay and an intermittent trigger circuit, wherein the stand-by power supply module is provided with a reservoir capacitance, automatically charges when starting up and provides electric energy for a signal receiver and CPU during standby as well as provides starting electric energy for the relay; after connected in parallel, the normally open contact and the home appliance button switch are connected between mains supply and a voltage-stabilized source in series so as to cut off an alternating current power supply during standby; a voltage comparison circuit and a capacitance capable of providing reference voltage are arranged in the intermittent trigger circuit; when the voltage of the reservoir capacitance is lowered to be below the reference voltage, the trigger circuit triggers the relay to be conducted, alternating current is switched on to charge,and the relay is cut off after being charged to cut off the alternating current power supply; the step is repeated to ensure that the voltage-stabilized source can work intermittently, which has the advantages that the voltage-stabilized source works intermittently during home appliances standby so as to greatly save standby energy consumption; and the capacitance is used as a standby power supply of which the service life is longer than various batteries. The invention is suitable for electrical appliances of various standby functions.

The invention discloses an intelligent micropower optical fiber wireless covering system relating to the field of radio-frequency communication devices and comprising a fiber optic repeater near-end machine and at least one micropower fiber optic repeater far-end machine, wherein, the fiber optic repeater near-end machine and each micropower fiber optic repeater far-end machine are both connectedwith a transmission signal via an optical fiber; the fiber optic repeater far-end machine comprises an intelligent inactivity multi-split radio-frequency light module, and the micropower fiber optic repeater far-end machine is an intelligent micropower radio-frequency light module. The invention integrates a noise amplifier module, a power amplification module and antennae into the intelligent micropower radio-frequency light module, and carries out intelligent control, which improves integration level and lowers the cost of the intelligent micropower optical fiber wireless covering system, so that the intelligent micropower optical fiber wireless covering system of the invention is more competitive, and is suitable for mobile communication network of GSM, CDMA, 3G, 4G, etc.

A circuit for measuring an unknown capacitance includes a reference capacitor having a known capacitance, an oscillator timing circuit, a variable frequency oscillator and a microcontroller. The oscillator timing circuit includes switches which selectively couple the unknown capacitance and the reference capacitor to the oscillator timing circuit. The variable frequency oscillator generates time varying signals which vary in frequency proportionally to the unknown capacitance and reference capacitor selectively coupled to the oscillator timing circuit. The microcontroller receives the time varying signals from the oscillator, and compares the periods of the time varying signals to determine the value of the unknown capacitance. A method of measuring an unknown capacitance includes the steps of generating a first time varying signal which has a period that is proportional to the unknown capacitance, generating a second time varying signal which has a period that is proportional to a known reference capacitance, comparing the periods of the first and second time varying signals and determining the value of the unknown capacitance from the comparison of the periods of the first and second time varying signals.

The invention discloses an electricity consumption information acquisition system and method based on dual-mode communication. The system comprises a high-speed carrier communication module which acquires configuration of each in the system, a micro-power wireless communication module, and a communication mode switching module which is respectively connected with the high-speed carrier communication module and the micro-power wireless communication module. When each node of the acquisition system performs data acquisition, the communication mode switching module controls switching to start thehigh-speed carrier communication module so as to transmit data through a high-speed carrier communication channel, or starts the micro-power wireless communication module so as to transmit data through a micro-power wireless communication channel, thereby realizing dual-mode communication of power utilization information data. The advantages of high-speed carrier communication and micro-power wireless communication can be brought into full play, dual-mode communication of the power utilization information acquisition system is realized, and the efficiency, reliability and flexibility of powerutilization information acquisition in various application scenes are improved.

An electronic lockset structure comprised of key, lock head, lock body, electrical control circuit and key manager. Characterized in that the key is provided with built-in battery and electronic cipher circuit, electrode contactor on the key elastically contacts with electrode contactor provided inside the lock head, and the circuit is linked to the electrical control circuit in the lock body, the electrical control circuit inside the lock starts working, electrically controlled microprocessor decodes and drives the treatment, if cipher fits, the magnetic valve will be attraction-closed and the block is driven to move away with micropower, drawing tooth or groove on the key activates lock bolt in the lock to move, unlocking is accomplished. There is no electric source inside the lock body, and the inserted key supplies power. The key is molding standardly, which is generally serviced with the lock. One key is capable of unlocking a plurality of electronic locks, and one electronic lock can be fitted with multiple keys. The lockset structure of the invention is mature and ingenious, electronic cipher is employed, particularly that electrical micropower driving and key standardization technology are employed, which is simple and reasonable, and is easy to use, it is safe and reliable.

The invention relates to an intelligent protocol conversion device used for solving the problem that different metering instruments have different communication protocols, and unified remote information collection cannot be performed and provides a communication interface conversion device from an RS-485 interface or an M-Bus interface to a PLC interface or a micropower wireless interface and a method of controlling the device. The intelligent protocol conversion device comprises a control circuit 21, a memory cell 23, a clock circuit 22, an M-Bus interface circuit 24, an RS-485 interface circuit 25, a PLC module 27, a micropower wireless module 27, a power supply and a battery circuit 26 and the like. The intelligent protocol conversion device can recognize standard data frame structuressuch as DL / T 645-1997, DL / T 645-2007, DL / T 698, CJ-T 188-2004, MODB US and IEC 62056 and converts the standard data frame structures to other one of the standard data frame structures according to a given set or an automatic learning result.

The invention discloses a micropower wireless self-organized network broadcast communication method. According to the micropower wireless self-organized network broadcast communication method, the technology which combines the CSMA-CA algorithm with the TDMA algorithm is adopted according to the characteristics and problems of micropower wireless self-organized network broadcast communication, and communication efficiency can be improved under the condition that the reliability of broadcast communication is fully improved. Due to the fact that the slot time synchronization algorithm is put forward based on the TDMA, a node is made to have a unique slot time. Due to the fact that the slot time synchronization algorithm is adopted for broadcast data, a child node is made to start a slot time timer when receiving of broadcast data frames is finished, accurate synchronization of the timing for transmitting the broadcast data frames is achieved, and thus collision occurring during data transmission can be avoided to the maximum degree.

The invention provides a series combination protecting-balancing module for high-capacity lithium ion batteries, which adopts a special micropower integrated circuit of a single lithium ion battery as a detection controller of individual battery voltage, reduces consumable current, and obtains high-precision detection voltage. Optical couplers are driven through a MOSFET, so as to realize the logic synthesis and level transfer of the charge-discharge protection control signals of every individual battery, and a Schmidt trigger circuit is adopted to reshape a total discharge control signal. The sampling of the current value and voltage limitation of a loading loop are realized through a MOSFET source follower circuit, and the multilevel current and short-circuit detecting function of a special integrated circuit is utilized to realize over-current and short-circuit protection and state keeping. The power supply of a control loop is realized by use of a whole-set electricity taking mode, so as to guarantee the consumable current balance of every individual battery; and an intermittent balance control mode is realized by utilizing the voltage-delay return difference of charging-protection staring-releasing control signals.