Air buoyancy correcting device used in mass measurement of counterbalance

An air buoyancy correction and quality measurement technology, which is applied in the direction of measuring devices, weighing, and weighing auxiliary equipment, can solve the problems of many environmental factors affecting the measurement results, poor accuracy of measurement results, and errors in measurement results. The density calculation structure is precise, the accuracy is guaranteed, and the effect of the accuracy of the results is improved

Inactive Publication Date: 2012-05-02
NAT INST OF METROLOGY CHINA
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Problems solved by technology

This requires multiple measurement steps, which makes the measurement process too cumbersome, and the measurement results are affected by many environmental factors, especially t

Method used

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  • Air buoyancy correcting device used in mass measurement of counterbalance
  • Air buoyancy correcting device used in mass measurement of counterbalance
  • Air buoyancy correcting device used in mass measurement of counterbalance

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0014] Examples of the present invention are figure 1 As shown, the air buoyancy correction device in weight mass measurement includes a closed box 1 . The box includes a cavity, the cavity is formed by buckling the upper cavity 2 and the lower cavity 3, and the weight 4 is placed in the lower cavity. The sound source outside the cavity is connected to the horn in the upper cavity 2, and the bell mouth is directly facing the weight 4 in the lower cavity. Two sound pressure signal acquisition devices 8 and 9 extend into the upper cavity and the lower cavity respectively, and both sound pressure signal acquisition devices are connected to the sound pressure signal acquisition card 10 outside the cavity through signal lines. Temperature sensor 11-1, humidity sensor 12-1, pressure sensor 13-1, CO 2 Sensor 14-1 detects the temperature, humidity, air pressure value and C...

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Abstract

The invention provides an air buoyancy correcting device used in mass measurement of a counterbalance, which is used for measuring and calculating the air buoyancy corrected value in the mass measurement of an E1 grade counterbalance. A cavity for accommodating the counterbalance is arranged in an enclosed box; a sound output device is arranged in the cavity; a sound pressure acquiring device is used for acquiring a sound pressure signal; a temperature sensor, a humidity sensor, a pressure sensor and a CO2 sensor which are arranged outside the cavity are used for acquiring corresponding air environment parameter values respectively; both a sound pressure signal value and an air environment parameter value are transmitted to a comprehensive signal acquiring and processing card; and a computer which is connected with the comprehensive signal acquiring and processing card is used for receiving, calculating and processing signal data provided by the comprehensive signal acquiring and processing card. The environmental air density and the counterbalance bulking value are calculated, so that the air buoyancy corrected value in the mass measurement of the counterbalance is obtained. In the invention, the counterbalance bulk measurement and the environmental air density measurement are realized integrally, so that the measuring steps are saved, the bulk and air density measuring results are obtained in the same environment, the influence of the environment on the measuring results is small, and the result accuracy is greatly increased.

Description

Technical field: [0001] The invention relates to an air buoyancy correction device in weight mass measurement, especially for E 1 The air buoyancy correction device in the quality measurement of grade weights, the air buoyancy measured is used to correct the weight measurement results. Background technique: [0002] Existing E 1 In order to obtain accurate measurement results, the influence of air buoyancy is usually considered in the quality measurement of grade weights. It is necessary to measure and calculate the air buoyancy value of the weight in the measurement environment to calculate the mass measurement result corrected by the air buoyancy. The existing air buoyancy correction method is to detect the temperature, humidity, and air pressure of the surrounding air environment, respectively use temperature, humidity, and pressure sensors to measure the temperature, humidity, and pressure values ​​of the environment, and then calculate the air density. However, the w...

Claims

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Application Information

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IPC IPC(8): G01G23/00
Inventor 王健蔡常青张跃钟瑞麟王肖磊胡满红丁京鞍姚弘倪晋权
Owner NAT INST OF METROLOGY CHINA
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