41results about How to "Low power performance" patented technology

The invention discloses a bridge structure safe state emergency monitoring and pre-warning method based on a wireless sensor network. The network with a sensor module which is arranged on the two sides or bottom stress point of the bridge or stress bearing parts of beams and columns is used for collecting bridge temperature and humidity, vibration amplitude, stress strain data of the beams and the columns, and data of the frequency and the amplitude of the bridge structure change. The sensor module wirelessly receives and sends with a collection node and a base station node by a wireless communication module, and sends the collected and processed data; the wireless receiving and sending collection node is connected with the base station node, and the base station node is connected with a computer by the network. The wireless sensor network realizes bridge structure safe state emergency monitoring and pre-warning, the sensor system processes, systematically decomposes and transforms the data to obtain the required parameters, and is connected to the computer by the network, and various software and hardware with realizable diagnostic function diagnose the received data.

A method for operating a working machine provided with a power source providing power and a plurality of power consuming systems connected to the power source includes the steps of providing a model predicting a power demanded by at least one of the power consuming systems, detecting at least one operational parameter indicative of a power demand, using the detected operational parameter in the prediction model, and balancing a provided power to the demanded power according to the prediction model.

This invention provides a low power real-time task scheduling method oriented embedded system for modeling, solution and optimization of real-time task scheduling for low power. It achieves low power consumption by using the technology and Real-time dynamic FM_PM Web tablet model, real-time scheduling. It ensures a real-time function based on the Real-time tasks in the model with a real-time restrict. Meanwhile, the program use of dynamic FM_PM operating systems, real-time processor to adjust to state Energy-saving way to achieve the objective during the process of implementing the mandate.

Disclosed is a motor-driven vehicle including: a first and second battery; a voltage converter that includes a plurality of switching elements configured to perform voltage conversion between an electric power output path and the first and second battery, and to switch the connection of the first battery and the second battery between an in-series connection and an in-parallel connection; a motor-generator; and a control device configured to turn on and off the switching elements, in which the control device switches connection to either of connection between the electric power output path and both the first battery and the second battery, and connection between the first battery and the second battery based on the switching element temperature, and the operating point of the motor-generator.

The invention provides a new radio frequency self-awakening communication method applied to electronic shelf label systems, wherein in the communication method, an independent self-awakening control function is added to control a sleeping status and a working status of a radio frequency transceiving module and a microcontroller; when both the radio frequency transceiving module and the microcontroller are in the sleep status, only the self-awakening control function is remained, and the function consumes extremely low power. Therefore, the method is capable of greatly prolonging the service life of an electronic shelf label terminal so as to reduce the use cost of the electronic shelf label system.

The invention provides an image display control device, which has the functions of rapidity (real-time performance), low power consumption and circuit scale increasing control, meanwhile, the image display control device can realize the adaptive light attenuation for lighting, and have high precise image correction technology to compensate the image quality worsening due to the light attenuation. The common arithmetic unit(218) is used for calculating the lighting brightness after the light attenuation and the correction coefficient for correctingimage. The common arithmetic unit(218) is regulated with the microcode memorized in the code table(216). In the image correction, the chroma correction is intensified, the chroma reduction causing by the light attenuation is controlled and the flash is prevented with tandem recursive IIR microwave processing. In addition, even the image has low average brightness and high chroma, the light attenuation of lighting is capable of being restricted and the reduction of chroma is able to be controlled.

The invention discloses a zero-cross detection system. The system comprises a zero-cross signal sampling module, a power module and a direct current filtration module, wherein the zero-cross signal sampling module comprises a thunder-proof surge interference circuit and an inductor, the thunder-proof surge interference circuit is connected with an alternating current fire line input end, an alternating current zero line input end and a primary winding of the inductor and at least comprises a safety capacitor, the primary winding of the inductor and the safety capacitor constitute a first filtration circuit, and the primary winding of the inductor is connected to an alternating current grid in series; the power module comprises a bridge rectifier, a clamping circuit, a booster transformer and a primary side feedback system, the clamping circuit is connected with a second auxiliary winding of the booster transformer, a first auxiliary winding of the booster transformer is connected withthe primary side feedback system, and a buffer circuit is arranged on a secondary side winding of the booster transformer and a direct current voltage output end. The problems of delay of the samplingcircuit, poor sampling consistency and high loss can be solved.

The invention discloses a low-power-consumption heart rate detection device connected with a phone and a method. The low-power-consumption heart rate detection device comprises a heart rate sensor module, a control module, a low-power-consumption Bluetooth module and an android client side application APP, the heart rate sensor module comprises a light source, a light receiver, a filter circuit and an amplifier circuit, a main function of the heart rate sensor module refers to realizing collection of heart rate signals by receiving light signals reflected caused by changing of light transmittance, converting the light signals into electric signals and subjecting the electric signals to smooth filtering and amplifying, main functions of the control module include sampling original waveforms, of heart rate, collected by a heart rate sensor and then calculating heartbeat within one minute namely a BPM value, a main function of the low-power-consumption Bluetooth module refers to realizing data sending, and the android client side application APP is responsible for compiling to be in the form of a smart phone APP and calling a Bluetooth module, a button module, an LCD module, a power source module, a storage module and a controller module of the phone for data receiving, processing and displaying.

The subject of the invention is a convolution operation device and a convolution operation method. The convolution operation device includes a convolution operation module, a memory and a buffer device. The convolution operation module has multiple convolution units. Each convolution unit carries out a convolution operation on the basis of a filter and multiple pieces of current data, and retainsa part of the current data after the convolution operation. The buffer device is in coupling connection with the memory and the convolution operation module, obtains multiple pieces of new data from the memory, and inputs the new data to the convolution units, and the new data do not overlap with the current data.

A stop block detection unit (100) is provided in the front stage of a moving image encoding unit (200). The stop block detection unit (100) divides a frame to be processed into multiple blocks and sorts the blocks in the frame in order of increasing movement. The number of blocks designated by "relevant block setting number" input from the outside to an encoding device (300) are set as "stop blocks," starting with the one with the least movement. With respect to the blocks that correspond to stop blocks, the moving image encoding unit (200) executes inter-encoding for the moving image by forcibly setting "movement vector = 0" without performing a movement search, and forcibly substituting "DCT coefficient = 0" without performing DCT and quantification processing.

The invention discloses a 2.4G communication frequency-based wireless temperature measurement device of a switch cabinet and belongs to the technical field of wireless monitoring devices of switch cabinets. The wireless temperature measurement device comprises a monitoring master machine and a monitoring slave machine, wherein the monitoring slave machine comprises a slave machine controller, a temperature sensor, a slave machine RTC time tick module, a power supply module, a slave machine wireless communication module and a slave machine watchdog module, and the slave machine controller is connected with the temperature sensor, the slave machine RTC time tick module, the power supply module, the slave machine wireless communication module and the slave machine watchdog module. By a wireless communication module, a temperature of each contact in the switch cabinet is measured, is displayed by an external display module, is stored in an EEPROM storage module and is uploaded to an uppercomputer for display, and the purpose of real-time monitoring is achieved; with the adoption of mutual-inductance energy taking mode, the problem of power supply difficulty is solved; the data communication frequency is changed according to temperature data, and better real-time on-line monitoring is achieved; and a dithering elimination program is also added into communication, and false alarm rate is reduced.

The invention discloses a farmland irrigation system, which comprises electromagnetic valves, capillary pipes and main pipeline equipment, wherein the electromagnetic valves are respectively connected with the capillary pipes and the main pipeline, in one piece of farmland, one end opening of each capillary pipe of the four capillary pipes is respectively provided with one electromagnetic valve, one end of the main pipeline is connected with one electromagnetic valve, and the other end of the main pipeline is respectively connected with the electromagnetic valves of the four capillary pipes. The farmland irrigation system has the characteristics that the energy consumption is low, and the control is easy. The farmland irrigation system is suitable for being popularized and applied.

The invention provides an oil and gas production intelligent monitoring system and method based on NB-IoT and relates to the oil and gas monitoring technology field. By using the system and the method, data acquired by various digital instruments are transmitted to a cloud server through an advanced NB-IoT wireless communication module at regular intervals by a controller in an oil and gas production field; and a transmission protocol type adopts CoAP, definition and deployment of profile and encoding and decoding plug-ins are completed by the cloud server in advance, the data transmitted by the NB-IoT wireless communication module are analyzed and stored, a client program of an upper computer captures the data from cloud, and oil and gas well attribute data monitoring values are displayedto a user. When the monitored data is abnormal and reaches an alarm value, a manager can send a work stopping instruction to a main controller at an upper computer end, takes the cloud as a relay, and stops working of a generator through controlling the relay so that work of a well site kowtow machine is stopped, and low power consumption and high stability in an oil and gas production monitoringprocess are achieved.

An ultrasound probe (106) contains an array transducer (101) and a microbeamformer coupled to elements of the array. The microbeamformer comprises analog ASICs (102) with transmitters and amplifiers coupled to elements of the array (101). The microbeamformer also comprises analog to digital converters which convert received echo signals to digital data, and digital beamforming circuitry located indigital ASICs (103). The digital ASICs (103) are clocked at a lower core frequency than that of which the digital integrated circuit process of the digital ASICs (103) is capable, and the digital ASICs (103) are operated at a lower supply voltage than that for which the digital integrated circuit process is designed, both of which reduce power consumption by the microbeamformer.

The invention relates to a voltage-controlled oscillator oriented to distribution network state monitoring and a noise reduction and quality improvement method thereof, and belongs to the field of distribution network operation state monitoring. The voltage-controlled oscillator is based on a novel 5.17 GHz CMOS. By adopting a capacitance feedback technology for improving the circuit quality factor, the parasitic effect of the circuit can be reduced in a high frequency band on the premise of not needing an additional substrate bias voltage, the phase noise of the circuit is improved. Meanwhile, the power consumption of the circuit is reduced by adopting a self-substrate bias technology without the substrate bias voltage. The capacitance feedback technology is adopted to improve the qualityfactor of the circuit, thereby reducing the phase noise. The working voltage of the circuit is reduced by adopting a self-substrate bias technology, so that the power consumption of the circuit is reduced.