145 results about "Humidity Testing" patented technology

The invention provides an in-situ preserving coring system and method, and belongs to the field of in-situ mechanical research of rock masses. The coring system comprises a coring drilling tool and rock core preserving equipment, the coring drilling tool comprises a drill bit and a drilling tool body connected with the drill bit, a pressure testing device is arranged on the portion, close to the drill bit, of the side wall of one end of the drilling tool body, and a temperature testing device and a humidity testing device are arranged above the pressure testing device; the rock core preserving equipment comprises an equipment body, a core storage tube capable of freely sliding in the equipment body in the axial direction is arranged in the equipment body, the core storage tube is a hollow cavity and is used for storing rock cores subjected to drilling, the outer wall of the equipment body is provided with a pressure preserving device, a heat preserving device and a humidity preserving device which are connected with the core storage tube respectively, and a ball valve connected with the front end of the equipment body is further included. The ball valve is switched on, rock core drilling is conducted, the drilled rock cores gradually enter the core storage tube along with drilling of the coring drilling tool, after rock core drilling is completed, the ball valve is switched off, and the drilled rock cores are stored in the sealed core storage tube. The in-situ preserving coring system and method are suitable for mechanical property research of the rock masses.

The invention relates to a checking system and a checking method for a sulfur hexafluoride density relay. The checking system comprises an intelligent control and processing unit, a data acquisition unit, a data storage unit and an intelligent control output unit which are based on AVR singlechips, uses a micro control unit as the core, and is provided with hardware modules for man-machine interaction, AD sampling, data storage, temperature measurement, motor driving and the like. The checking method mainly comprises functional modules for density testing, humidity testing, parameter setting,data query and the like. The invention has a humanized man-machine interactive system and has the advantages of convenient customer use, high automation degree, good air tightness and function diversity, thereby filling up the gap in the relevant field.

A substrate is provided, which has a pattern of voltage supply vias extending through at least a portion of the substrate. Each of a plurality of the voltage supply vias is surrounded by four of the voltage supply vias of a same polarity in four orthogonal directions and by four voltage supply vias of an opposite polarity in four diagonal directions.

The invention belongs to the technical field of integrated environment reliability test fields, and particularly relates to a large-scale full-size system universal integrated environment testing device, which aims at building a large-scale universal integrated environment testing device and solving the overall design problem of a large-scale system universal temperature-humidity-vibration integrated environment testing device, the design problem of a large-scale integrated environment testing device force-bearing system, the hanging problem of a heavy product inside the testing device, the technical problem of testing infrared and microwave characteristics of the product and the problem of operation energy consumption during the testing process. The device is characterized by comprising a temperature and humidity testing box system, a foundation and force bearing system, a vibration system and a hanging system, wherein the foundation and force bearing system is divided to two parts of the foundation and the force bearing system, and the force bearing system is situated on the foundation. An integrated environment stress test on a large-size and large-weight product can be met, the temperature stress range is -70 DEG to 180 DEG, the humidity range is 20 to 95%RH, and a product testing ability under infrared and microwave environments can be realized.

This invention provide a kind of the humidity testing and preventing device and method of the computer device, used to test the humidity situation of the computer device to insure the using security of the computer device in the circumstance with high humidity. This invention equips a humidity tester in the computer device. The humidity testing and preventing device can receive the actual humidity signal in the computer device tested by the humidity tester. Then compare it with the foreordaining setting humidity value. When the actual humidity exceeds foreordaining setting humidity value, it forbids the computer device executing the startup program. When the actual humidity exceeds foreordaining setting humidity value, it can also starting the functions of heating and bringing caution signal.

The invention belongs to the technical field of testing equipment, and particularly relates to a flexible moving type temperature and humidity testing system. The system comprises a testing box and a movable supporting unit used for supporting the testing box. The testing box is connected with a temperature and humidity control system through an air inlet pipe and an air returning pipe. The temperature and humidity control system is further connected with a numerical control unit and a water, air and refrigerating fluid source unit. The bottom of the testing box is connected with a vibration system. The testing box comprises an upper box body made of rigid materials and a lower box body made of flexible materials. The temperature and humidity testing system is simple in structure and flexible and can be conveniently combined with a vibration test bench to form a three-comprehensive testing system of the perpendicular temperature, the perpendicular humidity and perpendicular vibration or a three-comprehensive testing system of the horizontal temperature, the horizontal humidity and horizontal vibration or a comprehensive vibration system of multi-input and multi-output temperature and humidity, the requirement for various tests can be satisfied, adaptability and reliability are high, and the application range is wide.

The invention discloses a constant-temperature constant-humidity testing tank which comprises a main tank body, wherein a work room, an insulating layer, an air circulating device, a control device, a refrigerating device, a dehumidifying device, a heating device, a humidifying device and a drain pipe are arranged in the main tank body; the humidifying device comprises a heating water tank and a water supplementing device; the heating water tank is connected with the work room through pipelines; the water supplementing device comprises a water supplying box, a water balancing box and a water storing chamber which are orderly arranged from top to bottom; the water supplying box is connected with the water balancing box through a first pipeline, the water balancing box is connected with the heating water tank through a U-shaped pipe, two ends of the U-shaped pipe are respectively connected with the bottom of the water balancing box and the bottom of the heating water tank, the water balancing box is connected with the water storing tank through a second pipeline, the water storing tank is connected with the water supplying box through a third pipeline, a water level switch is arranged in the water supplying box, and a water level pipe is arranged in the water balancing box upwards, and is communicated with the first pipeline. The precision of the humidity in the work room is greatly improved.

The invention relates to a method for distributing temperature and humidity sensors in a Maitake mushroom house. The method comprises the steps that firstly, establishing a corresponding mathematical and physical model of a temperature field in the Maitake mushroom house and a corresponding mathematical and physical model of a humidity field in the Maitake mushroom house according to the CFD method; secondly, in consideration of factors such as solar radiation and conditions of the mushroom house, carrying out numerical simulation on a given geometric form (domain) of the mushroom house; thirdly, mastering the distribution of the temperature field and the humidity field in the mushroom house, instructing initial installation of the temperature and humidity sensors, and designing a temperature and humidity monitoring system of the Maitake mushroom house; finally, according to contrastive analysis of temperature and humidity testing data collected by the temperature and humidity monitoring system of the Maitake mushroom house and a numerical simulation result, determining simplified measuring point positions for temperature and humidity detection in the Maitake mushroom, and then determining an optimized distribution mode of the temperature and humidity sensors. By means of the method, data reflecting temperature and humidity change in the mushroom can be accurately detected by the monitoring system through as few temperature and humidity sensors as possible, so that needed labor and needed detection cost are reduced, and the diagnosis efficiency is improved.

The invention belongs to the technical field of reliability testing on mechanical parts and elements, and in particular discloses a rolling linear guide power damper reliability testing platform and a testing method. The rolling linear guide power damper reliability testing platform comprises a temperature -humidity testing tank, a damper working table, horizontal iron, an X-direction feeding device, a Y-direction feeding device, a damper loading unit support part, a piezoelectric ceramic loading part, a damping property detection part and an automatic control part, wherein the lower end of the damper loading unit support part is fixed on the horizontal iron; the upper end of the X-direction feeding device is fixed with the damper working table; the lower end of the X-direction feeding device is fixed with the horizontal iron; two ends of a roller screw rod are fixed on the damper loading unit support part; a Z-shaped plate is partially matched with the damper loading unit support part; the piezoelectric ceramic loading part is fixed below the Y-direction feeding device; a three-direction accelerator, a pressure sensor and an automatic control part are connected. By adopting the rolling linear guide power damper reliability testing platform and the testing method, typical working situation loading of rolling linear guide power dampers of different models can be simulated.

The invention refers to temperature and humidity testing method based on mobile phone. It includes: system initialization, searches net system signal, the mobile phone which is in stand-by state and has no outer response or the outer response has been processed, enters the temperature and humidity testing. The DSP of mobile phone works out the value of temperature and humidity and displays in screen, and returns to stand-by state, makes the mobile phone has the portable digital thermometer and humidiometer. The accuracy of temperature can reach 0.1, the accuracy of humidity can reach RH1%.

The invention discloses a relay-type stand-alone accelerated storage testing device, and the device is used for the accelerated storage testing of a plurality of relay-type stand-alone units, wherein each relay-type stand-alone unit comprises a plurality of input / output terminals. The device comprises a plurality of constant temperature and constant humidity testing boxes, an intelligent alarm system, a terminal switching and control circuit, a contact resistance measurement circuit, a time parameter measurement circuit, and an upper computer system. The upper computer system is connected with the terminal switching and control circuit and the time parameter measurement circuit. The upper computer system sends a parameter setting command, a system self-testing command and a testing starting command to the terminal switching and control circuit and the time parameter measurement circuit. The terminal switching and control circuit is connected between the plurality of relay-type stand-alone units and the contact resistance measurement circuit. The contact resistance measurement circuit is used for testing the contact resistance value at each input / output terminal of the relay-type stand-alone units and transmitting the measured contact resistance values to the upper computer system.

The invention discloses a power distribution cabinet test system based on the Internet of things, belonging to the field of power equipment test. The power distribution cabinet test system based on the Internet of things comprises a power distribution cabinet and a main control module, and further comprises an electrical parameter test module, a temperature test module, a humidity test module, a mechanical vibration test module, an electrostatic test module, an electromagnetic compatibility test module, a video acquisition module, a data storage module, and an alarm module. The system can detect electrical parameters of power distribution equipment in the power distribution cabinet, simulate the impact of different external environments on the power distribution cabinet, such as temperature, humidity, electrostatic interference and electromagnetic interference, and automatically perform tests in real time. When an abnormality occurs, an alarm is issued to ensure the safety and normal operation of the power distribution equipment. A user can remotely control the main control module through a smart terminal, and the data collected by the main control module can be displayed on the smart terminal in real time, which is convenient for the user to learn the test progress and result of the power distribution cabinet in real time.

The invention relates to a surface acoustic wave temperature and humidity sensor, belongs to the field of temperature and humidity testing, and solves the problem that an existing sensor cannot simultaneously measure temperature and humidity, or cannot differentiate the signals of multiple sensors. The surface acoustic wave temperature and humidity sensor mutually converts a surface acoustic waveand an electromagnetic wave by an interdigital transducer disposed on a delay line, and calculates the temperature and the humidity by a spread time difference of the surface acoustic wave on the delay line. The surface acoustic wave temperature and humidity sensor measures the temperature and humidity information wirelessly, and reduces the later maintenance of complicated wires. The surface acoustic wave temperature and humidity sensor is a passive device, has a service life not limited by a battery, and is suitable for extreme conditions such as airtightness and high-speed rotation. The surface acoustic wave temperature and humidity sensor integrates coding information and can conveniently obtain the correspondence between monitoring points and monitoring information.

This is a high pressure negative ion generator including a shell, negative ion generating cavum and switch. Humidity testing facility and high pressure generator are also installed in the shell, with the humidity testing facility linked to the switch and capable of adjusting the output value of the high pressure generator. The cavum includes fan, discharge needle, anode board, cathode board and permanent magnet as ion trap. The discharge needles are arranged in delta wave on the anode board with cathode board under it. The permanent magnet is installed on the two side wall to cavum bottom. The fan is installed to cavum back side.

The invention provides a system and a method for controlling the humidity in an alkali metal gas chamber. The system comprises a humidity control module, and further comprises a gas source device, a gas amount control device, a wetting device, a humidity testing device and an alkali metal gas chamber of an anti-relaxation coating to be plated, which are sequentially connected through a gas pipeline. An inert gas with the set humidity is introduced into the alkali metal gas chamber to be plated with the anti-relaxation coating in advance before the step of plating the alkali metal gas chamber with the anti-relaxation coating, so that the plating environment humidity of the anti-relaxation coating is accurately controlled, the manufacturing consistency of the alkali metal gas chamber is improved, and the influence of the environment humidity on the performance of the anti-relaxation coating is conveniently researched and explored; therefore, the anti-relaxation coating with excellent performance can be formed in the alkali metal gas chamber.

The invention provides a method for online accurate humidity measurement of sulfur hexafluoride gas in a GIS. SF6 gas in the GIS is automatically sampled and measured according to a specific measurement time interval requirement, and a result is transmitted to a monitoring background; when the numerical value of the measured SF6 gas exceeds standards, alarming is conducted in time, and operation and maintenance staff are prompted to find out causes; when humidity testing of the SF6 gas in equipment is qualified, the system can immediately start an inflation pressure pump, an inflation valve is turned on, the GIS equipment is filled with gas in an SF6 gas recycling device, and it is guaranteed that the gas is measured in a flowing state. Devices used in the method include the GIS equipment (1) filled with the SF6 gas, a sulfur hexafluoride gas pressure meter (2), a sulfur hexafluoride gas humidity sensor gas obtaining valve (3), a sulfur hexafluoride gas humidity sensor (4), a sulfur hexafluoride gas humidity online measurement background (5), the sulfur hexafluoride gas recycling device (6), a pressure pump (7) and an adjustable gas supplement valve (8).

The invention discloses a mobile phone for testing concentration of PM2.5 dust. The mobile phone comprises the components of a temperature / humidity testing module which converts temperature information and humidity information to analog electric signals and performs amplifying processing, wherein the temperature / humidity testing module is connected with a processor through an I2C bus; a dust sensor module which is connected with the GPIO port of the processor and reads data; a processor module which acquires the temperature information, the humidity information and the dust information and performs computing for converting the temperature information, the humidity information and the dust information to the corresponding temperature information, the corresponding humidity information and PM2.5 concentration data and stores the data in a memory, transmits the data to a mobile phone display screen for displaying and furthermore transmits related data to the RF module of the mobile phone; and the display screen module and the RF module which are connected with the processor module. The sensor is added in the mobile phone, thereby realizing air quality testing and performing alarm on abnormities. Data uploading and analysis can be performed through the network for generating a specific suggestion for outgoing of a person.

A method for qualifying circuit board fabrication, assembly, and repair processes includes establishing primary assembly process specifications and secondary repair process specifications. A group of test circuit boards is assembled using the primary assembly process, with each board having a section of components linked together to provide functional circuits and a section of components daisy-chained together to provide non-functional circuits, and with each section also including SIR test patterns and CAF test patterns. A subset of the assembled test boards is then repaired using the secondary repair process. A sample of each set of the test boards is exposed to test conditions including thermal cycle test conditions, humidity test conditions, and vibration test conditions. Inner layer build quality, surface cleanliness, circuit performance, and solder joint quality are then evaluated using the provided circuitry.

The invention discloses a finished automobile testing room capable of testing high-and-low temperature, humidity and volatile organic compounds. The finished automobile testing room comprises a testing box, a common circulation air channel, an evaporator, a heater, a circulation fan, a first circulation air channel and a second circulation air channel, wherein the common circulation air channel is communicated with the interior of the testing box; the evaporator, the heater and the circulation fan are arranged in the common circulation air channel; the first circulation air channel and the second circulation air channel are connected with one end of the common circulation air channel in parallel; the first circulation air channel and the common circulation air channel are connected with each other so as to form a high-and-low temperature and humidity testing circulation air channel; the second circulation air channel is internally provided with a first volatile organic compound and dust filter; the second circulation air channel and the common circulation air channel are connected with each other so as to form a volatile organic compound testing circulation air channel. The two major functions of high-and-low temperature and humidity testing and volatile organic compound testing can be integrated, and the purchase cost and the maintaining cost are reduced greatly for users.

The invention discloses a hydraulic hydrostatic leveling instrument precision test experiment platform comprising a hydraulic hydrostatic leveling instrument connection module, a temperature and humidity test module and a vibration test module; the hydraulic hydrostatic leveling instrument connection module comprises m hydrostatic leveling instruments, a liquid storage tank, an air pipe and a liquid pipe, and m is greater than or equal to 2; the temperature and humidity test module comprises a humidifying device used for simulating the environment humidity, a heating device used for simulatingthe environment humidity and a hygrothermograph used for monitoring the environment temperature and humidity. The vibration test module comprises a force hammer used for simulating a vibration working condition and an LMS test system used for monitoring the magnitude of vibration excitation. The hygrothermograph is connected with each temperature and humidity measuring point through signals, andthe LMS test system is connected with the force hammer and each vibration excitation measuring point through signals. The invention also discloses an experimental method of the hydraulic hydrostatic leveling instrument precision test experimental platform, and the influence of environmental factors on the test precision of the hydraulic hydrostatic leveling instrument can be effectively tested.

The invention relates to a portable draught fan performance testing platform. The portable draught fan performance testing platform comprises a device shell. An engineering machine, an environment temperature and humidity probe, an atmospheric pressure probe, a differential pressure measurement hole, a thermocouple plug, a smoke sampling port and a floater flow meter are fixedly arranged outside the shell. A smoke preprocessing module, an oxygen content sensor, an atmospheric pressure module, a temperature measurement module, a differential pressure measurement module and an environment temperature and humidity measurement module are fixedly arranged inside the shell. Input of all the modules inside the shell is connected with the probes which have the corresponding functions and are arranged outside the shell and is connected with the holes which have the corresponding functions and are formed outside the shell. Output of all the modules inside the shell is connected with the engineering machine. Displaying, processing and storing of collected data are achieved through the engineering machine. By developing the portable draught fan performance testing platform, the aim of measuring all test items required by the draught fan performance test can be achieved, and the effects of reducing manpower and material resources and saving test time are achieved.

The invention relates to an automatic humidity-testing, drying, mildew-preventing and insect-killing granary device and belongs to the technical field of grain storage. The automatic humidity-testing, drying, mildew-preventing and insect-killing granary device comprises a grain conveying plant, a storage battery, a granary body, a grain outlet, an insulation layer, an LED illuminating lamp, a dry ventilation fan, a solar panel, a temperature sensor, a humidity sensor, a grain insect entry, insect-killing porous sponge, an infrared detector, an insect-killing chamber, a signal line, an electric wire and a display system. Changes of an entire granary in temperature and humidity can be monitored in real time by the aid of the temperature sensor and the humidity sensor, drying measures such as drying by changing wind are carried out according to different temperatures and humidity, storage environment in the granary is kept cool, dry and well ventilated, pests in grain can be timely found out and killed timely, and loss of the grain can be greatly reduced.

The invention discloses an embedded concrete humidity testing device and an application method thereof. The embedded concrete humidity testing device comprises a shell; a humidity testing assembly isarranged in the shell; the lower portion of the shell is connected with a net-shaped conical barrel; and a humidity testing assembly is arranged in the net-shaped conical barrel. Vent holes are formedin the side surface of the net-shaped conical barrel; a sealing component capable of sliding up and down is arranged on the inner side of the net-shaped conical barrel and is connected with a rotarydrum through threads, and the rotary drum is connected with a driving device. The humidity testing assembly is arranged in the net-shaped conical barrel which can be sealed in space or can also be opened. Therefore, the whole device can be buried in concrete when sealed, the humidity testing assembly is not damaged by the concrete; when detection is needed, the internal space of the net-shaped conical barrel is opened, the humidity testing assembly and the internal humidity of the concrete are balanced, and the detected internal humidity data of the concrete are accurate, stable, and reliable;and the repeatability is high.

The invention discloses a test method based on a pipelined constant temperature and humidity room. The test method comprises the following steps that (1) safety confirmation is performed before start-up; (2) a test room is preheated; (3) material loading is performed; a product to be tested is arranged on the multilayer frame of the pipelined constant temperature and humidity room and pushed to a conveying belt to be fixed; (4) material feeding is performed; an inlet channel door is opened to form a material feeding channel, and an air curtain is also started to prevent loss of heat and moisture in the test room; and the power component of the pipelined constant temperature and humidity room is started to feed the multilayer frame to a second constant temperature and humidity test room and then the inlet channel door is closed; (5) testing is performed; constant temperature and humidity testing is performed according to the test requirements, and fluctuation and uniformity of temperature and humidity are observed; and (6) material discharging is performed; an outlet channel door is started to form a material discharging channel after completion of testing, and the air curtain is also started to prevent loss of heat and moisture in the test room; and the power component is started to move the product to be tested out of the test room and then the outlet channel door is closed.

The invention relates to a kind of automatic exhaust fan. It includes exhaust fan body, drive motor, harmful gas alarm automatic elimination and humidity automatic control circuit. The harmful gas alarm automatic elimination and humidity automatic control circuit includes electric power supply, gas-sensitive testing circuit, humidity testing circuit, and it is also installed with microcontroller and control switch. The input end of the microcontroller is each connected to the gas-sensitive testing circuit, humidity testing circuit. The output end of the microcontroller is connected to the control switch. The other end of the control switch is connected to the drive motor. The advantage of the invention is that the harmful gas alarm automatic elimination and humidity automatic control circuit is used as control switch; and can automatically and effectively test the dampness, fetor, harmful gas such as coal gas, carbon monoxide, and so on, in kitchen or toilet by its unique ' olfaction'; then it can realize open or stop automatically.

The invention provides an air temperature and humidity testing device and a temperature and humidity control method using the same. The testing device comprises a breather pipe; a heater is arranged on the breather pipe; a first platinum resistor for measuring the temperature of a dry bulb, a second platinum resistor for measuring the temperature of a wet bulb and a variable-frequency fan are sequentially connected to the breather pipe behind the heater; a third platinum resistor for measuring the temperature of the dry bulb is arranged on the breather pipe in front of the heater; the first platinum resistor is connected with a first controller, and the first controller is connected with the heater and used for controlling the output power of the heater; the second platinum resistor is connected with a second controller; the first platinum resistor and the third platinum resistor are further connected with a third controller, and the third controller can be connected between the firstplatinum resistor and the third platinum resistor in a switching mode. According to the invention, the temperature and humidity testing precision can be improved.

The invention provides a tube-shaped diffusion device for atmospheric aerosol particles, which is characterized in that a PVC tube with a diameter of 35 cm is used, each tube is 6.2 meters long, and there are 4 tubes in total. The dye is painted black and forms a gas diffuser that keeps the aerosol particles in a natural state of suspension. Both ends of the tube are sealed with high-transparency quartz glass, and illuminance and brightness test holes are reserved, with illuminance measurement holes on both sides and spectrum test holes in the middle. There is a temperature and humidity test hole, two medium filling ports and a drying port in the middle of each pipe body. To prevent the light source from directly shining on the measuring probe, place colorless frosted glass with the same inner diameter as the tube at the two ends of the diffuser at a distance of 10cm from the tube opening. The tubular diffuser can simulate the natural suspension state of atmospheric aerosol particles, and provides an experimental device for measuring the atmospheric visibility and the transmittance of artificial light sources in different concentrations of atmospheric aerosol particles.

The invention provides a curing room temperature and humidity testing system and a method based on the Internet of Things, which establish the connection relation among an Internet of Things remote server, a temperature and humidity monitoring terminal and a background operation terminal through the Internet of Things, and achieve the monitoring and control of the temperature and humidity of a plurality of testing points in a curing room. A temperature and humidity sensor measures the temperature and humidity of each test point in real time, is connected with a signal controller main board through a power cable, and sends a measurement result obtained in real time to the signal controller main board through an RS232 serial port and a modbus protocol; the signal controller main board comprises a storage chip and a calculation module; the calculation module reads a temperature and humidity preset threshold value stored in the chip, and determines a temperature and humidity change value of each test point in the curing chamber by comparing temperature and humidity preset threshold values with measurement results of the temperature and humidity sensor; and finally, temperature and humidity compensation is carried out through using control equipment based on the temperature and humidity change values of all the test points in the curing chamber, and therefore normal operation of allthe equipment in the curing chamber is guaranteed.

The present invention discloses a method and a structure of a temperature and humidity testing chamber for shortening the time of balancing high temperature and high humidity. A heater is fixed on a saturer inside the temperature and humidity testing chamber. When the workaround of the temperature and humidity testing chamber is want of higher humidity, the saturer is solely heated by the heater to increase the quantity of saturated moisture and then the saturated moisture is delivered to the workaround. The present invention resolves the problems that high temperature and high humidity take a long time to be balanced and even high temperature and high humidity can not be carried out. The heater is used to heat solely the saturated moisture that is brought about by the saturer, which can make the temperature and humidity of the workaround be up to the preset numerical value. In comparison with the testing chamber without the heater, the balance time can be shortened by 20-40 percent, and at the same time, the demand of high temperature and high humidity can be easily attained. Thus, the present invention has the advantages of expanding the scope of humidity test; shortening the balance time; and making the temperature and humidity testing chamber meet the demands of high temperature and high humidity.

The invention relates to an energy-saving rate testing method and system for energy-saving transformation of a central air-conditioning system. The energy-saving rate testing method is characterized in that two adjacent days are selected as a group of comparison testing time periods, testing of the energy consumption and refrigerating capacity of the central air-conditioning system in a non-energy-saving state and the temperature and humidity of the environment on the first day is carried out, testing of the energy consumption and refrigerating capacity of the central air-conditioning systemin an energy-saving state and the temperature and humidity of the environment on the next day is carried out, more than three groups of comparison test data in the non-energy-saving state and the energy-saving state are selected, the fact that the weather conditions of two adjacent days of each group of comparison data are the same in the test time period is ensured, the refrigerating capacity ofunit energy consumption in the non-energy-saving state and the refrigerating capacity of unit energy consumption in the energy-saving state are compared through analyzing of more than three groups ofeffective test data obtained through calculation, and the energy-saving rate is calculated by dividing the energy consumption difference between the non-energy-saving state and the energy-saving stateby the energy consumption in the non-energy-saving state. The system comprises a data center, an electric parameter recorder, a cooling capacity recorder and a temperature and humidity recorder. According to the energy-saving rate testing method and system for energy-saving transformation of the central air-conditioning system, synchronous acquisition, transmission and processing of the energy efficiency data of the central air-conditioning system can be realized.