CN203811820U - Device for measuring acceleration of gravity - Google Patents
Device for measuring acceleration of gravity Download PDFInfo
- Publication number
- CN203811820U CN203811820U CN201420154824.XU CN201420154824U CN203811820U CN 203811820 U CN203811820 U CN 203811820U CN 201420154824 U CN201420154824 U CN 201420154824U CN 203811820 U CN203811820 U CN 203811820U
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- CN
- China
- Prior art keywords
- photodiode
- chip microcomputer
- fixed bar
- fixed
- electromagnet
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a device for measuring the acceleration of gravity. The device comprises a stent (1), a first fixing rod (2), a second fixing rod (3), an electromagnet (4), an iron ball (5), a laser diode (6), a first photodiode (7), a reflecting plate (8), a spotlight bulb (9), a retaining ring (10), a second photodiode (11), a single-chip microcomputer (12) and a LCD (13). The single-chip microcomputer (12) controls the on and off of the electromagnet (4); outputs of the first photodiode (7) and the second photodiode (11) are respectively transmitted into the single-chip microcomputer (12); and the single-chip microcomputer (12) transmits processing results to the LCD (13) to be displayed.
Description
Technical field
The utility model belongs to physical measurement field, relates to a kind of measurement mechanism of acceleration of gravity.
Background technology
The application of laser in detection field is very extensive, and technology content is very abundant, also fairly obvious on the impact of social production and life.Laser ranging is one of laser application the earliest.This is because laser has many advantages such as high directivity, brightness is high, monochromaticity is good.In laser sensor when work in transmission time,, first by the laser diode Emission Lasers pulse that aims at the mark.After target reflection, laser is to all directions scattering.Part scattered light turns back to sensor receiver, after being received, is imaged onto on avalanche photodide by optical system.Avalanche photodide is the optical sensor that a kind of inside has enlarging function, so it can detect extremely faint light signal.Record and process from light pulse being issued to received the experienced time of returning, can measure target range.Transmission time laser sensor must extremely accurately be measured the transmission time, because the light velocity is too fast.
One chip microcomputer is called for short single-chip microcomputer, is typical embedded microcontroller (Microcontroller Unit), and the abbreviation MCU of conventional English alphabet represents single-chip microcomputer, and it is to be used in industrial control field the earliest.Single-chip microcomputer is penetrated into the every field of our life at present, is almost difficult to find which field there is no the trace of single-chip microcomputer.Single-chip microcomputer moves by program, and can revise.By different programs, realize different functions, by program, with single-chip microcomputer, can control easily the rotating speed that LED lamp, charactron are lighted speed and motor, can produce easily the row operation of going forward side by side of various random digits.By program, can realize the high intelligence of product, high-level efficiency, and high reliability.
LCD liquid crystal display is the abbreviation of Liquid Crystal Display, the structure of LCD is to place liquid crystal in the middle of two parallel glass, two have the tiny electric wire of many vertical and levels in the middle of sheet glass, whether seeing through switches on controls shaft-like crystal molecular changes direction, and light refraction is out produced to picture.
Summary of the invention
The measurement of acceleration of gravity, key is height and the time of determining that iron ball falls, now introduces laser range sensor and photodiode is measured.The purpose of this utility model is to design the measurement mechanism of a kind of simple in structure, easy to use, dependable performance, cheap acceleration of gravity, can automatically show the measurement result of acceleration of gravity.
For achieving the above object, the utility model comprises: support (1), the first fixed bar (2), the second fixed bar (3), electromagnet (4), iron ball (5), laser diode (6), the first photodiode (7), reflector (8), spot light lamp bulb (9), set collar (10), the second photodiode (11), single-chip microcomputer (12), LCD liquid crystal display (13), it is characterized in that: the first fixed bar (2) and the second fixed bar (3) are respectively perpendicular to support (1) and be fixed on support (1), the first fixed bar (2) and the second fixed bar (3) are at a distance of more than 0.5 meter, electromagnet (4) is fixed on the second fixed bar (3), iron ball (5) is inhaled below electromagnet (4), laser diode (6) and the first photodiode (7) are fixed on the second fixed bar (3), reflector (8) and set collar (10) be fixed on the first fixed bar (2) below, spot light lamp bulb (9) and the second photodiode (11) are fixed on the both sides that set collar (10) is positioned at (10) diameters of set collar above, the internal diameter of set collar (10) is greater than the diameter of iron ball (5), the center of set collar (10), the center of iron ball (5), the axle center of electromagnet (4) is positioned on same vertical curve, the center of reflector (8) and the first photodiode (7) are on same vertical curve, single-chip microcomputer (12) controls the conducting of electromagnet (4) and cuts out, the first photodiode (7), single-chip microcomputer (12) is sent into respectively in the output of the second photodiode (11), and single-chip microcomputer (12) is sent result into LCD liquid crystal display (13) and shown.
Described single-chip microcomputer (12) is with analog to digital converter.
Accompanying drawing explanation
The measurement mechanism structural representation of Fig. 1 acceleration of gravity;
The measurement mechanism signal of Fig. 2 acceleration of gravity is processed block scheme;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is illustrated.
Referring to the measurement mechanism structural representation of Fig. 1 acceleration of gravity, the measurement mechanism of acceleration of gravity is by support (1), the first fixed bar (2), the second fixed bar (3), electromagnet (4), iron ball (5), laser diode (6), the first photodiode (7), reflector (8), spot light lamp bulb (9), set collar (10), the second photodiode (11), single-chip microcomputer (12), LCD liquid crystal display (13) forms, the first fixed bar (2) and the second fixed bar (3) are respectively perpendicular to support (1) and be fixed on support (1), the first fixed bar (2) and the second fixed bar (3) are at a distance of more than 0.5 meter, electromagnet (4) is fixed on the second fixed bar (3), iron ball (5) is inhaled below electromagnet (4), laser diode (6) and the first photodiode (7) are fixed on the second fixed bar (3), reflector (8) and set collar (10) be fixed on the first fixed bar (2) below, spot light lamp bulb (9) and the second photodiode (11) are fixed on the both sides that set collar (10) is positioned at (10) diameters of set collar above, the internal diameter of set collar (10) is greater than the diameter of iron ball (5), the center of set collar (10), the center of iron ball (5), the axle center of electromagnet (4) is positioned on same vertical curve, and the center of reflector (8) and the first photodiode (7) are on same vertical curve.
Measurement mechanism signal referring to Fig. 2 acceleration of gravity is processed block scheme, single-chip microcomputer (12) controls the conducting of electromagnet (4) and cuts out, single-chip microcomputer (12) is sent into respectively in the output of the first photodiode (7), the second photodiode (11), and single-chip microcomputer (12) is sent result into LCD liquid crystal display (13) and shown.
Described single-chip microcomputer (12) is with analog to digital converter.
Acceleration of gravity
wherein s is the height that iron ball (5) falls, be the distance of the first fixed bar (2) and the second fixed bar (3), this distance can be tried to achieve by the launch time of laser diode (6) and the mistiming of the first photodiode (7) time of reception, t is the fall time of iron ball (5), and the moment that this time can not receive light by the second photodiode (11) subtracts each other and tries to achieve with the close moment of electromagnet (4).During use, single-chip microcomputer (12) controls the conducting of electromagnet (4) and cuts out, single-chip microcomputer (12) is sent into respectively in the output of the first photodiode (7), the second photodiode (11), and single-chip microcomputer (12) is sent result into the value that LCD liquid crystal display (13) shows acceleration of gravity.
Claims (1)
1. a measurement mechanism for acceleration of gravity, is characterized in that: the measurement mechanism of acceleration of gravity is by support (1), the first fixed bar (2), the second fixed bar (3), electromagnet (4), iron ball (5), laser diode (6), the first photodiode (7), reflector (8), spot light lamp bulb (9), set collar (10), the second photodiode (11), single-chip microcomputer (12), LCD liquid crystal display (13) forms, the first fixed bar (2) and the second fixed bar (3) are respectively perpendicular to support (1) and be fixed on support (1), the first fixed bar (2) and the second fixed bar (3) are at a distance of more than 0.5 meter, electromagnet (4) is fixed on the second fixed bar (3), iron ball (5) is inhaled below electromagnet (4), laser diode (6) and the first photodiode (7) are fixed on the second fixed bar (3), reflector (8) and set collar (10) be fixed on the first fixed bar (2) below, spot light lamp bulb (9) and the second photodiode (11) are fixed on the both sides that set collar (10) is positioned at (10) diameters of set collar above, the internal diameter of set collar (10) is greater than the diameter of iron ball (5), the center of set collar (10), the center of iron ball (5), the axle center of electromagnet (4) is positioned on same vertical curve, the center of reflector (8) and the first photodiode (7) are on same vertical curve, single-chip microcomputer (12) controls the conducting of electromagnet (4) and cuts out, the first photodiode (7), single-chip microcomputer (12) is sent into respectively in the output of the second photodiode (11), and single-chip microcomputer (12) is sent result into LCD liquid crystal display (13) and shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154824.XU CN203811820U (en) | 2014-03-27 | 2014-03-27 | Device for measuring acceleration of gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154824.XU CN203811820U (en) | 2014-03-27 | 2014-03-27 | Device for measuring acceleration of gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811820U true CN203811820U (en) | 2014-09-03 |
Family
ID=51450553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420154824.XU Expired - Fee Related CN203811820U (en) | 2014-03-27 | 2014-03-27 | Device for measuring acceleration of gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170212271A1 (en) * | 2016-01-21 | 2017-07-27 | King Fahd University Of Petroleum And Minerals | Method and apparatus for measuring a local acceleration of gravity |
-
2014
- 2014-03-27 CN CN201420154824.XU patent/CN203811820U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170212271A1 (en) * | 2016-01-21 | 2017-07-27 | King Fahd University Of Petroleum And Minerals | Method and apparatus for measuring a local acceleration of gravity |
| US10012757B2 (en) * | 2016-01-21 | 2018-07-03 | King Fahd University Of Petroleum And Minerals | Method and apparatus for measuring a local acceleration of gravity |
| US10114145B1 (en) | 2016-01-21 | 2018-10-30 | King Fahd University Of Petroleum And Minerals | Acceleration measurement apparatus |
| US10126461B2 (en) | 2016-01-21 | 2018-11-13 | King Fahd University Of Petroleum And Minerals | LED/photodiode apparatus for measuring acceleration |
| US11119246B2 (en) | 2016-01-21 | 2021-09-14 | King Fahd University Of Petroleum And Minerals | IR timing apparatus for measuring acceleration |
| US11119247B2 (en) | 2016-01-21 | 2021-09-14 | King Fahd University Of Petroleum And Minerals | Measurement apparatus with circuitry for measuring acceleration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150327 |
|
| EXPY | Termination of patent right or utility model |