Polling method of low-power consumption sensor for context-aware service of smartphone

The invention provides a polling method of a low-power consumption sensor used for a context-aware application program on the basis of context-aware service of the sensor in a smartphone. By using the method, unnecessary sensor activities can be dynamically removed, so that the sensors can be kept in a sleep state for a long time. Additionally, the invention also provides a method for searching the relation between an application request and the sensor activities. By adopting the method, multiple application program combination detecting frequencies which are invoked by a user are calculated and matched by a polling scheduler, so as to lead low-power consumption polling to avoid unnecessary activities. When different context application programs are used for evaluating the method, results indicate that the low-power consumption polling response time in a middleware is minimum (97ms). Compared with that of the traditional exhaustive polling operation, the energy consumption can be saved ...

Componentization embedded software energy consumption estimation model based on Markov chain

The invention focuses on componentization embedded software and provides the componentization embedded software energy consumption estimation model based on a Markov chain by regarding the running process of an embedded software system as a set of states from the angle based on states. The componentization embedded software energy consumption estimation model is characterized by firstly aiming atovercoming defects of low accuracy of software state transition probability caused by subjective judgment, classifying common software architecture styles, determining the state transition probability of the software in different styles, generating a software state transition probability matrix, adjusting a non-formal probability matrix to a formal probability matrix when the software state transition probability matrix is the non-formal probability matrix, estimating the average energy consumption of the embedded software according to the measured average component energy consumption value, and ...

Software energy consumption statistical method for embedded equipment I/O interface

The invention discloses a software energy consumption statistical method for an embedded equipment I/O interface, and provides a new method for measuring the software energy consumption of the embedded equipment I/O interface, which provides the database for the corresponding energy consumption optimizing research and development work. Experimental results show that an HMSim I/O interface energy consumption emulating module can rapidly predict (or estimate) an I/O energy consumption value of software algorithm when the software algorithm is performed on a specified target board by operating a mu C/OS-II RTOS-based application program after the method of the invention is applied to a high-precision command grade embedded software energy consumption emulator HMSim, and lays solid data foundation for carrying out corresponding energy consumption optimizing research and development work. The difference between the energy consumption computing result of the method and a result actually measured ...

Spacecraft attitude control semi-physical simulation system

The invention discloses a spacecraft attitude control semi-physical simulation system which relates to a spacecraft control semi-physical simulation system. The invention solves the problems of poor universality and systematicness in the prior spacecraft attitude control semi-physical simulation system. The simulation signal input or output end of a real-time simulation machine of the system is connected with the simulation signal output or input end of an onboard spacecraft computer; the wireless signal output or output end of a system wireless communication module is connected with the wireless signal input or output end of the real-time simulation machine; the signal output end of a ground wireless communication module is connected with the signal input end of a data storage module; the data signal output end 1 of the data storage module is connected with the data signal input end of a flight simulation display module; and the data signal output end 2 of the data storage module is connected ...

ARM processor-based embedded software power consumption statistic model

The invention discloses an ARM processor-based embedded software power consumption statistic model and provides a novel model and technology for measuring software power consumption and providing a data basis for corresponding power consumption optimization researches and development work. In the embedded software power consumption statistic model provided by the invention, the power consumption of hardware units including a processor, a memory, an I/O controller and the like is calculated, and a calculation scheme for calculating the corresponding instruction period number is designed according to the law of the instruction period of an ARM instruction set. When the embedded software power consumption statistic model is applied to a high-precision instruction-level embedded software power consumption simulator (HMSim), experiment results show that an error between the power consumption calculation results of the model and the results actually measured by an instrument is kept within 10 ...

Clothes hanger with adjustable unfolding range

The invention discloses a clothes hanger with an adjustable unfolding range, and relates to the technical field of clothes hangers, the clothes hanger comprises two clothes hanger supporting stand columns and a first fixed winding rod fixedly connected to the side walls of the clothes hanger supporting stand columns, and the first fixed winding rod is fixedly sleeved with a center fixing ring; the two sides of the center fixing ring are each provided with two side edge rotating rings, the four side edge rotating rings located on the same side are rotationally connected to the first fixing winding rod in a sleeving mode, folding assemblies are installed on the center fixing ring and the side edge rotating rings, and the folding function of the clothes hanger can be achieved through the folding assemblies. According to the clothes airing device, different types of clothes can be hung in different areas of the folding assembly to be aired, the unfolding range is adjusted and controlled through ...

Method for load distribution and thread structure optimization of MapReduce on GPU

In order to obtain a data-intensive application program and reduce the complexity of multiple programming, a group of simple programming interfaces are provided by MapReduce. Due to the fact that a GPU is of a large-scale parallel structure, the GPU gradually dominates the market of the parallel computing platforms. However, the design of a high-performance MapReduce frame of the GPU is challenging. The invention provides a method for load distribution and thread structure optimization of MapReduce on a GPU. According to the method, a high-performance MapReduce frame on the GPU is described. The method focuses on the two parameters including the working load and the thread structure of the frame. The two parameters belong to the first grade of parameters of the frame. A hierarchical searching method is adopted by the MapReduce frame, and load distribution and thread structure optimization are combined and coordinated by the adoption of the method. Due to the fact that the efficient and ...

Energy consumption related software/hardware partition-oriented hierarchical control and data flow graph modeling method

The invention discloses an energy consumption related software/hardware partition-oriented hierarchical control and data flow graph modeling method based on the research on conventional control and data flow graphs, and aims to provide support for the energy consumption optimization research and development of embedded software. For a C programming language, energy consumption related software/hardware partition modeling is performed by adopting a software/hardware partition-oriented hierarchical control and data flow graph method; and experimental results show that: compared with normal task graphs, a directed acyclic graph established through the energy consumption related software/hardware partition-oriented hierarchical control and data flow graph can perform certain granularity transformation as required and reasonably process a cycle structure for the C programming language, so the directed acyclic graph is favorable for obtaining an optimal partitioning result by a partitioning algorithm ...

Componentization embedded software energy consumption estimation model based on Markov chain

The invention focuses on componentization embedded software and provides the componentization embedded software energy consumption estimation model based on a Markov chain by regarding the running process of an embedded software system as a set of states from the angle based on states. The componentization embedded software energy consumption estimation model is characterized by firstly aiming at overcoming defects of low accuracy of software state transition probability caused by subjective judgment, classifying common software architecture styles, determining the state transition probability of the software in different styles, generating a software state transition probability matrix, adjusting a non-formal probability matrix to a formal probability matrix when the software state transition probability matrix is the non-formal probability matrix, estimating the average energy consumption of the embedded software according to the measured average component energy consumption value, and ...

Expansion riveting nut

The utility model provides an expansion riveting nut which comprises a nut body, one end of the nut body protrudes outwards to form a flange, an annular receding groove is formed in the nut body, andthe receding groove is located in the connecting position of the flange and the nut body. According to the expansion riveting nut, the annular receding groove is formed in the connecting position of the nut body and the flange, uneven parts generated on the periphery of the preset hole can be contained, and therefore the expansion riveting nut is prevented from inclining, and installation precision is guaranteed.

Highly-reliable real-time scheduling of bandwidth on telemedicine platform based on hidden Markov

The invention relates to the field of telemedicine system resource distribution, in particular to highly-reliable real-time scheduling of a bandwidth on a telemedicine platform based on hidden Markov. The efficiency of implementing bailout of a telemedicine system can be guaranteed through reliable and highly-efficient resource scheduling of a cloud virtual machine. The existing self-adaptive scheduling method cannot provide high-precision identification under the emergent or common condition. A concept of a main node for counting the storage efficiency and the transmission efficiency is provided on the basis of a typical telemedicine system structure. A new method is provided for predicating and distributing the bandwidth of a virtual machine in the telemedicine system environment. According to the method, each parameter in a hidden Markov model is dynamically adjusted through collecting history bandwidth load information. After the future bandwidth consumption of the virtual machine is ...

Residential cable well

The invention relates to the field of cable wells, in particular to a residence cable well. The residential cable well comprises a first stand column and a second stand column, the first stand column is connected with a first cantilever beam, the second stand column is connected with a second cantilever beam, the first stand column, the second stand column, the first cantilever beam, the second cantilever beam, the cross beam and the connecting beam form a framework of the protective cover, and therefore the cable well is formed. And the cable is led out from the underground, penetrates into the cable well and then penetrates into the residence. Due to the fact that the stand columns are fixed to the outer wall of the building, the effect that the cable well is attached to the outer wall of the building is achieved, the cable well can be separated from the foundation, the cable well and the building are synchronously settled, the problems of inclination and collapse are not prone to occurring ...

Hierarchical classification power consumption measurement method for ARM instruction set

The invention discloses a hierarchical classification power consumption measurement method, in particular a hierarchical classification power consumption measurement method for an ARM instruction set. The method comprises: firstly, dividing the ARM instruction set into four classes according to the type of instruction; secondly, classifying the instructions in addressing modes; and finally, performing classification according to the operands of different addressing modes. By performing an experiment on an ARM7TDMI processor, an instruction set power consumption simulator HMSim, according to a test result, is perfected to make a simulative test environment closer to an actual hardware environment; and thus, a more convenient and accurate test environment is provided for the measurement of the power consumption of embedded software. When the hierarchical classification power consumption measurement method provided by the method is used on the power consumption simulator HMSim, the error between ...

ARM processor-based embedded software power consumption statistical method

The invention discloses an ARM processor-based embedded software power consumption statistic model and provides a novel model and technology for measuring software power consumption and providing a data basis for corresponding power consumption optimization researches and development work. In the embedded software power consumption statistic model provided by the invention, the power consumption of hardware units including a processor, a memory, an I/O controller and the like is calculated, and a calculation scheme for calculating the corresponding instruction period number is designed according to the law of the instruction period of an ARM instruction set. When the embedded software power consumption statistic model is applied to a high-precision instruction-level embedded software power consumption simulator (HMSim), experiment results show that an error between the power consumption calculation results of the model and the results actually measured by an instrument is kept within 10 ...

Distributed spacecraft ground artificial system and implementing method thereof

The invention discloses a distributed spacecraft ground simulation system and a method for realizing same, belonging to the technical field of space flight and aviation. The invention aims at solving the problems that the configuration of the simulation platform of a prior distributed spacecraft is solidified and the expandability is bad. The invention adopts a one-dimensional rotational base airfloated platform which is based on a plane two-dimensional parallel motion and is perpendicular to a parallel motion plane. By configuring a cooling air thrustor and a counteractive flywheel as an executing mechanism and configuring a high-precision optical fibre gyro, an x-axle accelerometer and a Y-axle accelerometer as a sensing component, the definition of a high-precision relative position and the standardization of an initiate posture can be realized by a high-precision local GPS positioning system, and other hardware systems can be configured according to different tasks, thereby forming ...

Hierarchical classification power consumption measurement method for ARM instruction set

The invention discloses a hierarchical classification power consumption measurement method, in particular a hierarchical classification power consumption measurement method for an ARM instruction set. The method comprises: firstly, dividing the ARM instruction set into four classes according to the type of instruction; secondly, classifying the instructions in addressing modes; and finally, performing classification according to the operands of different addressing modes. By performing an experiment on an ARM7TDMI processor, an instruction set power consumption simulator HMSim, according to a test result, is perfected to make a simulative test environment closer to an actual hardware environment; and thus, a more convenient and accurate test environment is provided for the measurement of the power consumption of embedded software. When the hierarchical classification power consumption measurement method provided by the method is used on the power consumption simulator HMSim, the error between ...

Pipeline damping mounting structure

The invention relates to a pipeline damping mounting structure, and relates to the technical field of pipeline connecting structures, the pipeline damping mounting structure comprises a pipeline and a first damping pipe, the two ends of the first damping pipe communicate with the pipeline, and connecting frames are fixedly arranged on the parts, on the two sides of the first damping pipe, of the pipeline correspondingly; the connecting frames on the pipelines on the two sides of the first damping pipe are hinged to each other through a pivot. When vibration generated when a subway passes through a transfer floor is conducted to the pipelines to enable the pipelines to shake, the pipelines on the two sides of the first damping pipe can only swing relatively around the axes of the pivots, non-directional shaking of the pipelines is avoided, and therefore on the premise that it is guaranteed that the first damping pipe can play the damping effect, the damping effect of the first damping pipe ...

Steel structure seismic mitigation and isolation system and construction method thereof

The invention relates to the technical field of house seismic resistance, in particular to a steel structure seismic mitigation and isolation system and a construction method thereof.The steel structure seismic mitigation and isolation system comprises a plurality of steel columns and a plurality of superposed beams, the superposed beams are arranged in a staggered mode, a pile foundation is arranged at the joint of every two superposed beams, and the pile foundations extend to the ground to a rock-soil layer; a shock insulation support is mounted at the joint of every two superposed beams; a steel column is arranged at the joint of every two superposed beams, and the steel columns are fixedly connected with the shock insulation supports; a first viscous damper is arranged between the steel column and the superposed beam, one end of the first viscous damper is hinged to the steel column, and the other end of the first viscous damper is hinged to the superposed beam. The anti-seismic structure ...

Lower hoisting template with construction safety monitoring function

The invention is suitable for the field of hoisting formworks, and provides a lower hoisting formwork with a construction safety monitoring function, stiffening ribs are additionally arranged on the two sides of a profile steel beam, vertical tension screws are welded on the two sides of the stiffening ribs in advance, and the two vertical tension screws penetrate through an under-beam bottom plate at the lower end of the profile steel beam and a first joist, so that the lower hoisting formwork with the construction safety monitoring function is formed. The first nuts are used for fixing, so that the stability of the hoisting template is improved, and the problem of buckling of the section steel beam caused by local stress concentration due to the downward hoisting template is effectively prevented; the horizontal opposite-penetrating screws penetrate through the section steel beam, the beam side formworks on the two sides and the second joist and are fixed through the second nuts, it is ...

Distributed spacecraft ground artificial system and implementing method thereof

The invention discloses a distributed spacecraft ground simulation system and a method for realizing same, belonging to the technical field of space flight and aviation. The invention aims at solving the problems that the configuration of the simulation platform of a prior distributed spacecraft is solidified and the expandability is bad. The invention adopts a one-dimensional rotational base air floated platform which is based on a plane two-dimensional parallel motion and is perpendicular to a parallel motion plane. By configuring a cooling air thrustor and a counteractive flywheel as an executing mechanism and configuring a high-precision optical fibre gyro, an x-axle accelerometer and a Y-axle accelerometer as a sensing component, the definition of a high-precision relative position and the standardization of an initiate posture can be realized by a high-precision local GPS positioning system, and other hardware systems can be configured according to different tasks, thereby forming ...

Inter-satellite relative distance measurement device based on inter-satellite information exchange

An inter-satellite relative distance measurement device based on inter-satellite information exchange is disclosed, belonging to the field of aerospace application. The inventive aims at providing an inter-satellite information exchange-based inter-satellite relative distance measurement device which is simple in designed structure and capable of realizing relative navigation among a plurality of satellites. The invention uses an electric wire unit as a front end to accomplish the establishment of an inter-satellite link circuit with a field programmable gate array (FPGA) and a highly-integrated RF integrated nRF2401 RF chip; by means of the inter-satellite information exchange, the measurement of the inter-satellite relative distance is accomplished by utilizing time difference of record information transmitted among satellites, therefore the inter-satellite relative distance relationship can be calculated. The device is used for the measurement of the inter-satellite relative distance ...

Tools for developing networked network game

A development tool of network game software is featured as video-recording all objects in living and then inserting recorded objects into game to make game player play in environment familiar to player, using server at each area to provide service to player and simultaneously providing game service between areas.

Damping steel structure bridge construction method

The invention relates to the technical field of steel structure bridges, in particular to a construction method of a damping steel structure bridge. The construction method comprises the following steps: S1, construction of the superposed beam; s2, anti-seismic structure construction: S2.1, first construction section anti-seismic structure construction; s2.2, a second construction section anti-seismic structure is constructed; s3, main body structure construction: S3.1, first construction section main body structure construction; s3.2, a second construction section main body structure is constructed; and S4, deformation joint construction. According to the construction method, by adapting to the stress conditions and specific structures of different construction sections, the corresponding foundation structures are arranged on the lower portions of the different construction sections, and therefore the effect that the influence of subway passing on the upper steel structure bridge is reduced ...

Inter-satellite relative distance measurement device based on inter-satellite information exchange

An inter-satellite relative distance measurement device based on inter-satellite information exchange is disclosed, belonging to the field of aerospace application. The inventive aims at providing an inter-satellite information exchange-based inter-satellite relative distance measurement device which is simple in designed structure and capable of realizing relative navigation among a plurality ofsatellites. The invention uses an electric wire unit as a front end to accomplish the establishment of an inter-satellite link circuit with a field programmable gate array (FPGA) and a highly-integrated RF integrated nRF2401 RF chip; by means of the inter-satellite information exchange, the measurement of the inter-satellite relative distance is accomplished by utilizing time difference of recordinformation transmitted among satellites, therefore the inter-satellite relative distance relationship can be calculated. The device is used for the measurement of the inter-satellite relative distance.

Unified dispatching algorithm of reconfigurable system software/ hardware task based on placement cost

The invention discloses a unified dispatching method of a reconfigurable system software/ hardware task based on placement cost. Aiming at the deficiency of the on-line dispatching method of the current reconfigurable task system, the invention considers three costs, i.e. performing time on an FPGA by the hardware task, occupied FPGA area and the fragment situation of the FPGA; and in addition, the invention also considers the unified dispatching method of the software/ hardware tasks. In the dispatching process, when the cost of the hardware task exceeds the preset threshold, the hardware task is refused to operate on the FPGA, which is realized by utilizing a CPU to perform the corresponding software task. By reasonably refusing certain tasks with larger cost, the invention can improve the task dispatching success rate on a whole. Experiments show that the method can obtain higher task deadline reliability compared with the existing method.

Water spraying galling equipment

The invention relates to water spraying galling equipment, and relates to the field of building construction. The water spraying galling equipment comprises an equipment body, a high-pressure-resistant water pipe arranged on the equipment body, a handle communicated with the high-pressure-resistant water pipe, a high-pressure spray head arranged on one side of the handle, a moving trolley arranged on one side of the equipment body, a stand column arranged above the moving trolley and a supporting plate arranged on one side of the stand column. The lifting translation telescopic mechanism is arranged between the stand column and the supporting plate and used for driving the supporting plate to move in the transverse direction and the height direction and meanwhile accurately controlling the distance between the high-pressure spray head and the wall face, and the fixing mechanism is arranged between the supporting plate and the handle and used for fixing the handle. The water spraying and ...

Position probability distribution-based energy consumption model of network-on-chip (NoC) directory protocol

The invention provides a position probability distribution-based energy consumption model of a network-on-chip (NoC) directory protocol by performing deep analysis on a Cache coherence common directory protocol on the basis of study on the energy consumption model of a NoC directory energy consumption model in multi-processor system-on-chip (MPSoC). In consideration of the independence of directory information from data block node position distribution, the node position in NoC of a data block is fixed, a data transmission probability matrix of data transmission between any nodes is calculated, and the energy consumption at one time of data block transmission in the directory protocol can be obtained accurately by combining energy consumption of a routing unit, connection energy consumption and a network topological structure. Experiments show that the model provided by the invention can effectively calculates the energy consumption of different directory protocols in a Mesh network with ...

A electron chest card for travel party

The utility model relates to an electron chest card, more specifically say an electron chest card for travel party, function that the identity that has the traditional visitor of travel party chest card was marked shows the schedule and remind in real time through the vibrations module through LCD screen module, provides the function that stroke information, vehicle information, lodging information and schedule inquired to the visitor down in the connection of visitor's smart mobile phone and cooperation. The memory is connected with microprocessor. LCD screen module is connected with microprocessor. Shift knob is connected with keying circuit, and keying circuit is connected with microprocessor. The vibrations module is connected with the vibrations controller, and the vibrations controller is connected with microprocessor. The battery charges the module and is connected with the lithium cell, and the lithium cell is connected with microprocessor. The antenna is connected with bluetooth ...

Position probability distribution-based energy consumption model of network-on-chip (NoC) directory protocol

The invention provides a position probability distribution-based energy consumption model of a network-on-chip (NoC) directory protocol by performing deep analysis on a Cache coherence common directory protocol on the basis of study on the energy consumption model of a NoC directory energy consumption model in multi-processor system-on-chip (MPSoC). In consideration of the independence of directory information from data block node position distribution, the node position in NoC of a data block is fixed, a data transmission probability matrix of data transmission between any nodes is calculated, and the energy consumption at one time of data block transmission in the directory protocol can be obtained accurately by combining energy consumption of a routing unit, connection energy consumption and a network topological structure. Experiments show that the model provided by the invention can effectively calculates the energy consumption of different directory protocols in a Mesh network with ...

Basin mixer