37results about How to "Optimize Energy Efficiency Ratio" patented technology

The invention relates to an air cleaning device, in particular to the air cleaning device used in a data central apparatus room. According to the air cleaning device, a filtering method combining physical filtering and chemical filtering is adopted, and the pollutant concentration in the air is monitored by a gas sensor in real time. A central processing control unit generates a 4-20mA current signal or a 0-10V voltage signal to a controller of a draught fan according to the received pollutant concentration signal, the rotating speed of the draught fan is dynamically adjusted in real time, the central processing control unit uploads the data detected by a pollution degree detector and a temperature and humidity detector to a remote monitoring terminal through a communication interface, a temperature, humidity and corrosion level radar map is generated, the effect to the device from the pollutant is analyzed, the corrosion variation trend is tracked, the corrosion risks are grasped in advance, early corrosion warning is issued, and measures are taken in advance to remove hidden dangers. A specific filtering scheme is appointed according to the environment air to enable the air cleaning device to operate in an energy-saving and efficient mode.

The invention discloses a pure electric automobile as well as a control method and a control device for a cooling system thereof. The control method for a cooling system comprises the following stepsof carrying out heat production analysis on each heat source in at least one heat source in an automobile so as to obtain the temperature of each heat source at a future preset time; obtaining the current outdoor environment temperature and the current automobile speed of the automobile and obtaining a plurality of cooling capacity values of the cooling system at different states from a preset cooling capacity table according to the current outdoor environment temperature and the current automobile speed; and controlling the cooling system according to the plurality of cooling capacity valuesand the temperature of each heat source at the future preset time. And therefore, the energy efficiency ratio of the cooling system of the pure electric automobile can be optimized to achieve active energy saving so that a purpose of increasing the endurance mileage of the electric automobile is achieved.

Provided is a control method for an electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; retrieving a target exhaust temperature according to the real-time running frequency in a preset relation in which each available target exhaust temperature is paired with a single real-time running frequency, wherein the target exhaust temperature retrieved being defined as a first target exhaust temperature; defining a sum of the first target exhaust temperature and a set compensation temperature as a second target exhaust temperature, wherein the set compensation temperature is determined by the real-time outdoor environment temperature ; and performing a PID control on opening amount of the electronic expansion valve based on a deviation that is a difference between the real-time exhaust temperature and the second target exhaust temperature . The method achieves an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

The invention discloses an air conditioner. The air conditioner comprises an outdoor heat exchanger, a compressor, a four-way valve, an indoor heat exchanger and a throttling device, wherein the outdoor heat exchanger, the compressor, the four-way valve, the indoor heat exchanger and the throttling device are sequentially connected through pipelines to form a circulation passageway. The throttling device comprises throttling passageways used for being matched with different sizes of flow, wherein one of the throttling passageways is a rapid refrigeration and rapid heating passageway. The air conditioner further comprises an indoor environment temperature sensor and a controller electrically connected with the indoor environment temperature sensor, wherein the controller is selectively communicated with the corresponding throttling passageway according to temperature changes detected by the indoor environment temperature sensor. The invention further discloses a control method of the air conditioner. The air conditioner meets the APF requirement, the instant refrigeration requirement and the instant heating requirement.

The invention discloses a rock breaking method. The rock breaking method comprises the following steps that A, a rock breaking machine arranged in a rock breaking operation zone is driven or moved to a zone to be subjected to rock breaking, the rock breaking operation zone is made to be above the zone to be subjected, and the rock breaking operation zone of the rock breaking machine is a hollow zone which penetrates through a car body of the rock breaking machine and is perpendicular to the ground; B, a rock arm is operated, and a rock breaking part on the rock arm is controlled to act downwards in the rock breaking operation zone; and C, the rock breaking part of the rock arm breaks rocks in the rock breaking operation zone. The technical effects that the weight of the rock breaking machine can be fully utilized to improve the rock breaking effect of the rock arm in the rock breaking operation zone, and the rock arm is effectively made to conduct rock breaking operation around the gravity center and the nearest zone of the rock breaking machine; and meanwhile, on the premise that the rock breaking effect is ensured, arms with high weight do not need to be lifted, the energy loss of idle work can be reduced to minimum, and thus the rock breaking energy consumption is reduced.

Provided is a control method on electronic expansion valve in air conditioner, which comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; if the air conditioner working in cooling mode, using a first set rule or a second set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a first set outdoor environment temperature; if the air conditioner working in heating mode, using a first set rule or a third set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a second set outdoor environment temperature; performing a PID control on the electronic expansion valve by using an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

The invention relates to an energy-saving machine room air conditioning system and a running method thereof. The energy-saving machine room air conditioning system comprises a first circulation loop for refrigerating; the first circulation loop comprises a pump, a liquid storage tank, a condenser, a compressor, an evaporator and an expansion valve which are sequentially connected in series, a first one-way valve is connected to the two ends of the pump in parallel, and a second one-way valve is connected to the two ends of the compressor in parallel; the energy-saving machine room air conditioning system further comprises a second circulation loop used for pre-lowering the inflow air temperature of the condenser, and the second circulation loop lowers the inflow air temperature of the condenser through a natural cold source. According to the system, the circulation system capable of achieving precooling through the natural cold source is additionally arranged, therefore, the inflow air temperature of the condenser in the energy-saving machine room air conditioning system is lowered, the annual working time of the pump in the first circulation system for refrigerating in an air conditioner is prolonged, the time for achieving refrigerating through cold energy of the outdoor natural cold source is prolonged, and then the annual energy efficiency ratio of the energy-saving machine room air conditioning system is increased.

The invention provides a directional sound generating apparatus and method. The apparatus comprises: a signal preprocessing module for successively performing bandpass filtering, gain amplifying, low-frequency compensating and compression amplitude limiting processing on input digital audio signals and sending the processed signals to a pulse-width modulation module; the pulse-width modulation module for obtaining modulated ultrasonic carrier wave signals from the processed signals by use of pulse-width modulation; a driving amplification module for performing driving amplification on the modulated ultrasonic carrier wave signals; an ultrasonic transducer array module for matching the amplified modulated ultrasonic carrier wave signals with an ultrasonic sensor array through an LC low-pass filtering circuit to emit ultrasonic signals and generating directional sound by use of nonlinear propagation of the ultrasonic signals in air, wherein the ultrasonic sensor array in an ultrasonic energy transducer comprises multiple array elements, and the carrier wave frequency of the ultrasonic carrier wave signals are arranged according to the work frequency of each array element. The pulse-width modulation structure is quite simple, the distortion is quite small, and the integration and the energy efficiency ratio are good.

The invention provides an air conditioner heat exchange system comprising an efficient condenser and a tubular heat exchanger. The efficient condenser integrates condensation and supercooling. Gas from the tubular heat exchanger to an evaporator and liquid from the condenser are subjected to heat exchanging, heat of refrigerating medium from the condenser and heat of refrigerating medium from the evaporator are efficiently utilized, and efficiency of the system is improved; meanwhile, a supercooling zone and a condensation zone in the condenser are communicated with a guide plate, and the structure is compact; the sectional area of a guide channel and open area of guide connectors at two ends of the guide channel are approximately equal, and accordingly the refrigerating medium flows at the guide plate at stable speed and heat exchanging efficiency is greatly improved.

Provided is a control method on electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; comparing the real-time running frequency of compressor with a first set frequency; if the real-time running frequency is greater than or equal to the first set frequency, obtaining an integral coefficient of the PID algorithm according to a first set rule; if the real-time running frequency is less than the first set frequency, obtaining an integral coefficient of the PID algorithm according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a second set rule, or according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a third set rule, wherein the selection is based on whether the air conditioner is working in cooling mode or in heating mode; performing a PID control on the electronic expansion valve by an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on electronic expansion valve opening amount.

The invention relates to a hot gas defrosting method of an air source heat pump. The air source heat pump comprises a controller, a compressor, an evaporator, an expansion valve, a condenser, a circulating pump and an electric control valve. The defrosting method comprises the following steps: the controller controls the electric control valve, the compressor, the evaporator and the circulating pump to act sequentially and perform the following sequential steps repeatedly and alternately: heating, opening the valves to stop heating, defrosting, and closing the valves; and the hot gas defrosting method further comprises the following steps: A) the controller records the time T1 of the heating step in the previous circle and the time t consumed in the subsequent defrosting step; and B) the time T2 of the heating step in the next circle is set after computation according to the optimum defrosting time b which is obtained by experiments. Aiming at the disadvantages of the prior art, the air source heat pump can automatically adjust heating operation period, defrosting start time and defrosting time according to the ambient conditions by the hot gas defrosting method so as to obtain the optimum energy efficiency ratio.

The invention relates to the technical field of adjusting valves, and discloses a control method and device for a heat pump system electronic expansion valve. The control method comprises the steps that the target overheat degree, the fixed parameter value X and the adjusting periods t are set; overheat degree data collection is conducted, at least two overheat degree data are collected in the current adjusting period, and buffering time for a system to respond is reserved in the front section of each adjusting period; the overheat degree deviation delta T is calculated and is equal to the difference of the current overheat degree and the target overheat degree; the aperture of the electronic expansion valve is adjusted according to the delta T and the fixed parameter value X; and the second step is repeatedly executed, and circulation is conducted. According to the control method and device, through setting of the adjusting periods, the buffering time for the system to adjust and respond is arranged in the front section of each adjusting period, and the adjusting lagging performance of the system is sufficiently considered; and t serves as the adjusting periods, the aperture of the electronic expansion valve is adjusted by calculating the overheat degree deviation and the set fixed parameter value X, and the adjusting precision is high.

The invention relates to a reverse defrosting method of an air source heat pump. The air source heat pump comprises a controller, a compressor, an evaporator, an expansion valve, a condenser and a circulating pump thereof, and an electric control four-way valve is serially connected between an outlet and an inlet of the compressor. The defrosting method comprises the following steps: the controller controls the electric control four-way valve, the compressor, the evaporator and the circulating pump to act sequentially and perform the following sequential steps repeatedly and alternately: heating, stopping to switch the valves, defrosting, and stopping to switch the valves again; and the reverse defrosting method further comprises the following steps: A) the controller records the time T1 of the heating step in the previous circle and the time t consumed in the subsequent defrosting step; and B) the time T2 of the heating step in the next circle is set after computation according to theoptimum defrosting time b which is obtained by experiments. The air source heat pump can automatically adjust heating operation period, defrosting start time and defrosting time according to the ambient conditions by the reverse defrosting method so as to obtain the optimum energy efficiency ratio.

The embodiment of the invention discloses a method and device for reducing network-on-chip power consumption, a CPU chip and a server, relates to the technical field of computers, and can effectivelyreduce the network-on-chip power consumption. The method comprises the following steps: acquiring working state data of a network-on-chip (NoC), wherein the working state data comprises one or more ofthe maximum number of caches used in an NIU (Network Interface Unit) in the latest period of time and the maximum number of caches used in an RU (Remote Unit) in the latest period of time; accordingto the working state data, the number of caches needing to be opened in the NIU and the RU is calculated respectively; and closing the remaining number of caches in the NIU and the RU according to thenumber of the caches required to be opened. The method is suitable for occasions of reducing network-on-chip power consumption.

The embodiment of the invention discloses a method and device for reducing network-on-chip power consumption, a CPU chip and a server, relates to the technical field of computers, and can effectivelyreduce the network-on-chip power consumption. The method comprises the following steps: dividing a network-on-chip (NoC) into more than two regions which are not overlapped with each other, wherein each region uses an independent working clock; acquiring working state data of a routing unit RU of the NoC; calculating the expected working frequency of each region of the NoC according to the workingstate data; and adjusting the working frequency of each region of the NoC to the expected working frequency. The invention is suitable for occasions of reducing network-on-chip power consumption.

The invention discloses an air-conditioning system waste heat recovery method, which comprises the following steps: gaseous-state refrigerant delivered by a compressor is liquefied through heat release in a condensing device; liquid-state refrigerant in the condensing device is delivered to an evaporator through a recovery device; and the gaseous-state refrigerant treated by the evaporator is delivered back to the compressor through the recovery device, wherein heat exchange between the liquid-state refrigerant and the gaseous-state refrigerant is carried out in the recovery device. The invention also discloses a system used for the method, which comprises the compressor, the condensing device, the evaporator and the recovery device for carrying out heat exchange between the liquid-state refrigerant from the condensing device and the gaseous-state refrigerant from the evaporator. The heat exchange steps of the liquid-state refrigerant and the gaseous-state refrigerant in the recovery device and the recovery device are adopted to make the heat of the refrigerant of the air-conditioning system be utilized reasonably, the energy efficiency ratio of the air-conditioning system is improved, and the purpose of energy saving and consumption reduction is achieved.

The invention discloses an air conditioner, comprising an outdoor heat exchanger, a compressor, a four-way valve, an indoor heat exchanger, and a throttling device. Flow devices are sequentially connected by pipelines to form a circulation path; the throttling device includes throttling passages matching different flow rates, and one of the throttling passages is a rapid cooling and heating passage; the air conditioner also includes an indoor ambient temperature sensor and a The temperature sensor is electrically connected to the controller; the controller gates the corresponding throttling channel according to the temperature change detected by the indoor temperature sensor. The invention also discloses a control method of the air conditioner. The invention not only satisfies the requirement of APF, but also satisfies the requirement of fast cooling and heating.

The invention provides an air-conditioning heat exchange system comprising a high-efficiency evaporator, a high-efficiency condenser and a tubular heat exchanger, wherein high-efficiency condenser realizes integrated condensation and supercooling, the high-efficiency evaporator realizes integrated evaporation and overheating, and the tubular heat exchanger is employed to exchange heat with a gas coming out of the evaporator and a liquid from the condenser, and therefore, the heat of a refrigerating medium out of the condenser and the heat of a refrigerating medium out of the evaporator are utilized effectively and the efficiency of the system is improved; in the meantime, the overheating region and the evaporator region of the evaporator are communicated with each other through an overheating guide plate; the air-conditioning heat exchange system is simple in structure, and the sectional area of an overheating flow guide groove is approximately equal to the open area of overheating flow guide connectors at both ends so that the flow velocity of the refrigerating medium is stabilized at the guide plate, and as a result, the heat exchange efficiency is greatly improved.

The embodiment of the invention discloses a method and device for reducing network-on-chip power consumption, a CPU chip and a server, relates to the technical field of computers, and can effectivelyreduce the network-on-chip power consumption. The method comprises the following steps: acquiring working state data of a network-on-chip (NoC), wherein the working state data comprises one or more ofthe number of non-responsive requests initiated by equipment in an NIU in a period of time window, the number of requests and responses cached in an RU in a period of time window, and NoC historicalbandwidth statistical data; calculating the expected working frequency of the NoC according to the working state data; and adjusting the working frequency of the NoC according to the expected workingfrequency. The method is suitable for occasions of reducing network-on-chip power consumption.

The invention discloses a pure electric automobile as well as a control method and a control device for a cooling system thereof. The control method for a cooling system comprises the following stepsof carrying out heat production analysis on each heat source in at least one heat source in an automobile so as to obtain the temperature of each heat source at a future preset time; obtaining the current outdoor environment temperature and the current automobile speed of the automobile and obtaining a plurality of cooling capacity values of the cooling system at different states from a preset cooling capacity table according to the current outdoor environment temperature and the current automobile speed; and controlling the cooling system according to the plurality of cooling capacity valuesand the temperature of each heat source at the future preset time. And therefore, the energy efficiency ratio of the cooling system of the pure electric automobile can be optimized to achieve active energy saving so that a purpose of increasing the endurance mileage of the electric automobile is achieved.

The invention provides an expanding shell of an air-conditioning compressor. The expanding shell comprises an integrated hollow shell, wherein the integrated hollow shell comprises an upper shell body and a lower shell body; the lower shell body is designed as a cylindrical tube; the upper shell body comprises a No.1 cylindrical tube and a conical tube; the inner dimeter and the outer diameter of one end of the conical tube are correspondingly equal to those of the No.1 cylindrical tube; the inner dimeter and the outer diameter of the other end of the conical tube are correspondingly equal to those of the lower shell body; the No.1 cylindrical tube is connected to the end, with the large outer diameter, of the conical tube; and the lower shell body is connected to the end, with the small outer diameter, of the conical tube. The expanding shell provided by the invention has the advantages that the original shell shape is changed, so that the compressor can be conveniently mounted and the position of the compressor in the expanding shell can be prevented from changing; ribs are arranged on the surface of the expanding shell, so that the rigidity of the expanding shell can be improved and the economy of materials can be achieved; and meanwhile, the heat-dissipating effect can be improved.

The invention provides a hot water cascade heating preparation system that realizes deep recovery of condensation heat in a cold storage, including a refrigeration unit, an electric compression heat pump, a hot water storage tank, a circulating water pump, a high-temperature plate heat exchanger, a low-temperature plate heat exchanger, and auxiliary electric heater. The system includes three operating conditions, the three operating conditions include waste heat recovery heating operating conditions, electric compression heat pump maintenance operating conditions and non-heating operating conditions. When in use, an appropriate heat source can be selected according to the hot water temperature requirement, and a cascaded heating system with matching temperature can be constructed. This system can realize the deep recovery of condensation heat in the cold storage for the preparation of hot water. On the one hand, it can significantly reduce the boiler gas consumption and reduce the production cost in the factory. On the other hand, it can improve the cooling capacity of the condensing system, thereby improving the energy efficiency of the refrigeration system. Compare.

The embodiments of the present invention disclose a method, a device, a CPU chip and a server for reducing the power consumption of an on-chip network, which relate to the technical field of computers and can effectively reduce the power consumption of the on-chip network. The method includes: acquiring working status data of the network-on-chip NoC, the working status data including one of the maximum number of caches used in the NIU in the most recent period of time, the maximum number of caches used in the RU in the most recent period of time, or According to the working status data, calculate the number of caches that need to be opened in the NIU and RU respectively; and close the remaining number of caches in the NIU and RU according to the number of caches that need to be opened. The present invention is suitable for the occasion of reducing the power consumption of the on-chip network.

The invention relates to a convolutional neural network accelerator based on an FPGA, and belongs to the technical field of target detection. In the method, the convolutional neural network accelerator is designed to comprise a host used for sending input image data and weight parameters to a PCIE DMA module and receiving an output result from the PCIE DMA module; and the operation module is used for performing convolution, pooling and logistic regression operation on the image data input from the image data caching module and the weight parameters from the weight data caching module. Through the design of the accelerator, the energy efficiency ratio of hardware is optimized, and the real-time performance and stability of a target detection task are ensured.

The invention provides an adjustable type vehicle body, a center-of-gravity type rock breaking machine and a rock breaking method, and belongs to the field of mechanical rock breaking in the field of engineering machinery, which mainly solves the problems of failure to fully use self weight to enhance lower shearing force of mechanical working and loss of unnecessary energy in the existing rock breaking machine. The adjustable type vehicle body, the center-of-gravity type rock breaking machine and the rock breaking method are mainly applied to the construction engineering of rocks on medium-solid and solider rock strata. The adjustable type vehicle body is provided with a hollow part which penetrates through the adjustable type vehicle body from top to bottom, and comprises a power part, a hydraulic part, a control part, a walking mechanism and an adjusting assembly, wherein the adjusting assembly is used for adjusting the width of the adjustable type vehicle body. The center-of-gravity type rock breaking machine comprises the adjustable type vehicle body and a rock arm, wherein the rock arm penetrates through the hollow part to break rock. The adjustable type vehicle body has the advantages that rock can be broken by fully utilizing the weight of the whole machine in the working process, the vehicle body is stable, and the energy consumption is low; the size of the vehicle body is adjusted according to the actual conditions of an operation site, the application range is wide, and the transportation is convenient.

The invention provides a directional sound generating apparatus and method. The apparatus comprises: a signal preprocessing module for successively performing bandpass filtering, gain amplifying, low-frequency compensating and compression amplitude limiting processing on input digital audio signals and sending the processed signals to a pulse-width modulation module; the pulse-width modulation module for obtaining modulated ultrasonic carrier wave signals from the processed signals by use of pulse-width modulation; a driving amplification module for performing driving amplification on the modulated ultrasonic carrier wave signals; an ultrasonic transducer array module for matching the amplified modulated ultrasonic carrier wave signals with an ultrasonic sensor array through an LC low-pass filtering circuit to emit ultrasonic signals and generating directional sound by use of nonlinear propagation of the ultrasonic signals in air, wherein the ultrasonic sensor array in an ultrasonic energy transducer comprises multiple array elements, and the carrier wave frequency of the ultrasonic carrier wave signals are arranged according to the work frequency of each array element. The pulse-width modulation structure is quite simple, the distortion is quite small, and the integration and the energy efficiency ratio are good.

The invention discloses an option pricing calculation hardware accelerator, an acceleration card and computer equipment. The option pricing calculation hardware accelerator comprises a Gaussian random number generator, a multiplier m2, an adder a2, an EXP module, a multiplexer MUXA, a multiplexer MUXB, a multiplier m5, a subtracter s0, a comparator, a delay module delay, an accumulator, a shifter and a multiplication array. Through the combination of the parts, a Monte Carlo iteration path can be simulated in M clock periods, so that prediction of one option execution price SM is completed. In order to reduce hardware resource consumption and circuit complexity, 64-bit floating-point operation is converted into fixed-point operation; the acceleration card is a board card comprising the hardware accelerator, and the computer equipment is provided with the option pricing calculation hardware accelerator. The Monte Carlo option pricing calculation hardware acceleration implementation process is free of pause, the whole calculation process is full streamlined, and compared with CPU and GPU implementation under the same process, the Monte Carlo option pricing calculation hardware acceleration implementation method has better performance and energy efficiency ratio.

The invention discloses an option pricing calculation hardware accelerator, an accelerator card and computer equipment. The option pricing calculation hardware accelerator of the invention includes a Gaussian random number generator, a multiplier m2, an adder a2, an EXP module, a multiplexer MUXA, Multiplex its MUXB, multiplier m5, subtractor s0, comparator, delay module delay, accumulator, shifter and multiplication array, through the combination of the above components, it is possible to simulate a Monte Carlo in M ​​clock cycles The path is iterated to complete the prediction of the option execution price SM once. In order to reduce hardware resource consumption and circuit complexity, 64-bit floating-point operations are converted into fixed-point operations; the accelerator card is a board including the aforementioned hardware accelerator, and the computer equipment is equipped with the aforementioned option pricing calculation hardware accelerator. The present invention can realize Monte Carlo option pricing calculation hardware acceleration without pause, and the entire calculation process is fully streamlined, and has better performance and energy efficiency ratio compared with CPU and GPU implementations under the same process.