Air chamber photoelectric measurement scale
A photoelectric measurement and balance technology, which is applied in the fields of electronics and optics, can solve the problems of large influence, low accuracy, inaccurate scale and weight, etc., and achieve the effects of long service life, simple measurement and reduced error
Inactive Publication Date: 2014-12-17
SOUTHWEST UNIV
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Problems solved by technology
Traditional mechanical balances have disadvantages such as troublesome operation, many steps, low accuracy, inaccurate scales and weights, etc.
Although the electronic balance made by using the principle of electromagnetic force balance has been greatly improved, it is also expensive, difficult to maintain and troubleshoot, is greatly affected by the environment (vibration, airflow, temperature), and is easily disturbed by external electromagnetic fields. wait for weakness
Method used
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Embodiment Construction
[0016] The device is described in detail below in conjunction with the accompanying drawings:
[0017] see figure 1 and figure 2 , the device mainly includes a housing 16, a measuring table 1, a gas chamber 3, a laser 2, a linear photosensitive sensor 4, an A / D converter 5, a data processor 6, an LED display 7, and the like.
[0018] The casing 16 is used to accommodate all parts of the balance, and its upper part separates the weighing chamber 9. The upper surface and three sides of the weighing chamber 9 are fixed transparent glass plates, and the glass on the other side is a door 11 that can be freely pushed and pulled, which is convenient Place the object to be measured and effectively prevent the interference of external airflow.
[0019] The measuring platform 1 is located in the weighing chamber 9 , which can move up and down freely, and the lower part is directly connected with the elastic gas wall 13 above the gas chamber 3 through the support shaft 15 .
[0020] ...
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An air chamber photoelectric measurement scale comprises a weighbridge, an air chamber, a laser, a linear photosensitive sensor, an Analog to digital (A / D) converter, a data processor and a light-emitting diode (LED) displayer. The weighbridge is directly connected with the air chamber through a supporting shaft arranged on the lower portion of the weighbridge. The top wall of the air chamber is an elastic air wall made from elastic materials, and the center of the elastic air wall is connected with the lower end of the supporting shaft of the weighbridge. Two pieces of transparent glass are arranged at opposing positions of the lateral walls of the air chamber, the other positions of the air chamber are not transparent, and calibration gas is filled in the air chamber. The laser is arranged on one side of the air chamber and arranged over against one piece of the transparent glass, and the linear photosensitive sensor is arranged on the other side of the air chamber and arranged over against the other piece of the transparent glass. The linear photosensitive sensor is connected with the A / D converter through a signal line, the A / D converter is connected with the data processor, and the data processor is connected with the LED displayer. The quality of objects is measured with a method of gas concentration detection based on photoelectric sensing, and the purposes of simple measurement, quick reaction, high accuracy degree, small external environment influence and long service life are achieved.
Description
technical field [0001] The invention belongs to the field of optics and electronics technology, and in particular relates to a balance using photoelectric technology. Background technique: [0002] For a long time, applying the principle of leverage to achieve a mechanical balance between the measured object and the weight of the standard mass has been the main method of existing mass measurement. Traditional mechanical balances have disadvantages such as troublesome operation, many steps, low precision, inaccurate scales and weights. Although the electronic balance made by using the principle of electromagnetic force balance has been greatly improved, it is also expensive, difficult to maintain and troubleshoot, is greatly affected by the environment (vibration, airflow, temperature), and is easily disturbed by external electromagnetic fields. Wait for weakness. Contents of the invention [0003] In view of the above deficiencies, the present invention proposes a gas ch...
Claims
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IPC IPC(8): G01G9/00
Inventor 孙卫伟马星科杜政伟王正刚邹新政张婷陈雅慧
Owner SOUTHWEST UNIV