Title of Invention

ELECTRONIC LEVEL INDICATOR USING SENSORS

Abstract

Levelling is a branch of surveying to find the elevations of given points with respect to a datum and to establish the points. The existing instrument consists of a telescope through which the levelling staff can be focused and the readings are taken manually. Since the readings are seen through telescope upside down and the readings are noted in the field manually, if any mistake is noted in the office, the whole instrument is again to be taken to the field to redo the work. Besides, this instrument is complicated and heavy. Hence, a new electronic level indicator is invented using transmitter and sensors. The proposed level consists of a transmitter to pass light ray on the levelling staff which is embedded with sensors to communicate the reading to the digital display. The readings are stored and transmitted to the office system simultaneously. This level is handy and cheap when compared to existing electronic level.

Full Text

Description 1. Field of Invention This invention pertains to the field of surveying. This is an inter deciplinary invention. Traditional surveying has been done in the past without implementing the modern evolution in electronics. With this background, this invention has been developed. 2. Prior Art Levelling is a branch of surveying to find the elevations of given points with respect to a given or assumed datum and to establish the points. The instruments commonly used in direct levelling are a level and a levelling staff. The most commonly used level is a Dumpy level which consists of (1) a telescope to provide line of sight (2) a level tube to make the line of sight horizontal (3) a levelling head to bring the bubble in its centre of run and (4) a tripod to support the instrument. This level is a complicated one and difficult to handle. Transferring from one place to another is tedious. The readings are to be taken manually and to be entered separately in a level book then and there. 3. Background of Invention This new instrument invented now consists of a transmitter fitted to the top of a tripod. There is no telescope to focus the levelling staff like the existing one. The levelling staff used in this invention is with a few sensors and there is an electronic display at the top of the levelling staff. In this new instrument, a light ray is transmitted to the levelling staff instead of focusing through the telescope that exists today. The light ray generated from the transmitter unit kept on the tripod will fall on a corresponding sensor fixed in the staff and the sensor will communicate a number that will be displayed by the electronic circuit at the top of the levelling staff. This gives the corresponding reading indicating the level of that point. Such displayed readings are stored electronically and is retrieved for calculations later which replaces the difficulty of entering in separate level book manually. This instrument is working under the principle of light transmitting and sensing. The entire invention has been summed up as above for cogency. 4. Summary of Invention An Electronic Level Indicator using Sensors comprising of a tripod to hold the transmitter and a transmitter to transmit the light ray on the levelling staff and a levelling staff with sensors embedded to sense the light ray falling on the levelling staff and to communicate the same to the digital display unit and a digital display to display the readings thus obtained and to transmit the same to the FM transmitter, an FM transmitter along with a receiver to receive such transmitted data, a converter to convert these data and to store in a computer device and a computer device for later calculation. 5. Brief Description of Drawings The following are the drawings which are enclosed in this specification to make a brief information of what the invention is about. 1. Instrument Model 2. Levelling Cocept 3. Circuit Block Diagram 4. Details about taking reading and retrieving Having given a brief description , it is advantageous to give he detailed description of drawings of this new invention which are attached. 6. Detailed Description of of Drawings 1. INSTRUMENT MODEL Fig. 1 elaborates the model of the whole instrument. In which there are two main devices. One is a tripod fixed integrally with transmitter (1) and the light is transmitted on the levelling staff. And another one is levelling staff (2) which is embedded with sensors and a digital display (3). Once ray is transmitted on the particular sensor ( for eg., sensor no. 7), then the corresponding level reading (ie., 7) will be displayed in the digital display. In the digital display, the readings can be stored and there is no need to enter the readings manually. 2. LEVELLING CONCEPT Fig. 2 explains the levelling concept. A transmitter (1) is placed over the tripod and the ray is transmitted on the levelling staff (2). Levelling staff is placed on the point where level is to be taken. The transmitter can be rotated through 360degree at any time to focus staff at any point without shifting the tripod. For example, there are two points namely A & B and the difference in levels of A & B are to be determined. First, levelling staff is placed in location A, the reading is taken ie., 7 as an example. The staff is transferred to location B and the reading is taken for this new location B say 8 for example. The reading is noted directly from the digital display (3) like 7 and 8 as shown. Then the level difference between A&B is 8-7= 1 unit. 3. CIRCUIT BLOCK DIAGRAM Fig. 3 gives detail about how to take level reading in the field and how it is retrieved in the office. In the field, the ray transmitter is placed on the tripod and the ligt ray is received by the sensors (1, 2, 3, 4 &5 ...) in the levelling staff and is displayed in the digital display. At the office, the data is received through FM transmission and at the same time calculation is made in a computer simultaneously. 4. DETAILS ABOUT TAKING READING AND RETRIEVING Fig.4 explains clearly about how the readings are taken in the field and how the readings are received in the office and the calculations can be made in the office with computer. 7.Advantages • Light weight hence easy to handle • Digital display is available to read the measurements • Focusing is not required, hence time can be saved • Mistakes that generally occurs due to manual reading can be avoided • Readings can be saved and retrieved. • Readings can be transmitted to the office system from the field. • No need to adjust the telescope and to level the instrument each and every time. • The cost is about four times less than that of already available sophisticated levels and the cost is slightly more than that of the dumpy level. • No skilled person is required. We claim: 1. An Electronic Level Indicator using Sensors comprising of a tripod to hold the transmitter and a transmitter to transmit the light ray on the levelling staff and a levelling staff with sensors embedded to sense the light ray falling on the levelling staff and to communicate the same to the digital display unit and a digital display to display the readings thus obtained and to transmit the same to the FM transmitter, an FM transmitter along with a receiver to receive such transmitted data, a converter to convert these data and to store in a computer device and a computer device for later calculation. 2. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a tripod is provided for the purpose of holding the transmitter. 3. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a transmitter is provided to transmit the light ray falling on the levelling staff 4. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a levelling staff is provided with embedded sensors to sense the light ray and to communicate to the digital display 5. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a digital display unit is provided to display the readings and to pass on the same to an FM transmitter 6. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, an FM transmitter cum receiver is provided to obtain the data from digital display unit 7. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a converter is provided to convert the data received from FM transmitter cum receiver to store in a computer device. 8. An Electronic Level Indicator using Sensors as claimed in claim 1, wherein, a computer device is provided to retrieve the data obtained for later calculation. 9. An Electronic level indicator using sensors substantially as herein described is with reference to the four drawings Dated this Twenty first day of September 2004 1 0 e- '■■ -.:■' J.

Documents:

0949-che-2004 abstract duplicate.pdf

0949-che-2004 claims duplicate.pdf

0949-che-2004 description (complete) duplicate.pdf

0949-che-2004 drawings duplicate.pdf

949-che-2004-abstract.pdf

949-che-2004-claims.pdf

949-che-2004-correspondnece-others.pdf

949-che-2004-correspondnece-po.pdf

949-che-2004-description(complete).pdf

949-che-2004-drawings.pdf

949-che-2004-form 1.pdf

949-che-2004-form 19.pdf

949-che-2004-form 3.pdf

949-che-2004-form 5.pdf