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Leveling device

A technology of water bubbles and photoelectric components, which is applied in the direction of measuring devices, instruments, surveying and navigation, etc., can solve the problems of unsteady and reliable tilt detection structure of the sweeper, complex production process of the structure, and reduce the sensitivity of the sweeper, so as to simplify the production and The effect of assembly process, compact structure, and improved reliability

Inactive Publication Date: 2012-10-24
NANJING CHERVON IND
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Problems solved by technology

[0005] Although the above-mentioned US5953116 improves the sensitivity of balance detection by setting a shading plate, thereby shielding stray light, the setting of the shading plate makes the structure and production process of the whole leveling device of the sweeper complicated. After prolonged use, the shading plate may be deformed and displaced, resulting in an unstable and unreliable tilt detection structure of the sweeper, and even reducing the sensitivity of the tilt measurement of the sweeper

Method used

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Embodiment Construction

[0030] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] see Figure 4a to Figure 5b The water bubble 11 is placed between the photoelectric element (a pair of photocells A, B) and the light source 12 (LED lamp). The air bubbles 11' in 11 float in the water bubbles 11, and when the air bubbles 11' in the water bubbles 11 are centered, the two photovoltaic cells A, B are symmetrically distributed on both sides of the air bubbles. Photocells A, B and the LED light source are all electrically connected to the PCB board 10 .

[0032] Figure 4a , 4b It is the principle and effect diagram when there is no opaque material attached to the water bubble 11. It can be seen that the light received by the photocells A and B and transmitted through the water bubble 11 and the bubble 11′, some of the stray light at the edge is also transmitted to the photosensitive cells of the ph...

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Abstract

The present invention provides a leveling device, which comprises at least a bladder, a luminous element and a pair of photoelectric element. The luminous element and the photoelectric element are respectively arranged at two sides of the bladder, the light which is capable of penetrating the bladder and is emitted by the luminous element is received by the photoelectric element, wherein, an opaque part capable of shielding part of light is provided on the bladder. By providing the opaque part, the stray light around the bladder is shielded, the light which is passed through a photosynthetic layer is projected on the photoelectric element, so that contrast ratio of the luminance on the photoelectric element can be enhanced, and the sensitivity of the leveling device is improved; an opaque material is directly formed on the bladder through a pad printing mode without setting other shielding parts, so that the manufacture and assembly processes can simplified, and the whole a leveling device structure is more compact, and the reliability can be improved.

Description

technical field [0001] The invention relates to a leveling device, in particular to a leveling device with a photoelectric water bubble tilt detection structure. Background technique [0002] The laser leveling device is a common leveling device used in engineering operations such as construction or decoration. The water bubble is installed on the laser leveling device for tilt detection. In order to improve the accuracy, stability and reliability of the water bubbles in the leveling instrument, the original capacitive type is turned to the electronic type. At present, the photoelectric type is the most widely used electronic water bubble form in the self-balancing leveling device on the market. Its work and structure The principle is: in the first horizontal direction of the laser leveling instrument, a first water bubble is placed, and in the second horizontal direction, a second water bubble is placed, and a light source is arranged below each water bubble, and a pair of ...

Claims

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Application Information

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IPC IPC(8): G01C9/06G01C9/24
CPCG01C9/06G01C9/34
Inventor 胡桂伍陈明张晓阳
Owner NANJING CHERVON IND
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