CN209296757U - A kind of single-lens reflex photoelectric door velometer - Google Patents
A kind of single-lens reflex photoelectric door velometer Download PDFInfo
- Publication number
- CN209296757U CN209296757U CN201822006943.1U CN201822006943U CN209296757U CN 209296757 U CN209296757 U CN 209296757U CN 201822006943 U CN201822006943 U CN 201822006943U CN 209296757 U CN209296757 U CN 209296757U
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- CN
- China
- Prior art keywords
- photoelectric door
- microprocessor
- reflector panel
- tube
- infrared
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- Expired - Fee Related
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
A kind of single-lens reflex photoelectric door velometer, including photoelectric door, Reflector Panel, display, input keyboard and tachometer circuit plate.Wherein, photoelectric door receives integral tube by one group of reflective infrared emission and forms, and reflective infrared emission, which receives integral tube, an infrared transmitting tube and an infrared receiving tube, and infrared transmitting tube and infrared receiving tube are vertically-mounted；Coarse blank sheet of paper is posted on Reflector Panel surface, and has one fixed width, and Reflector Panel is mounted in moving object；The velocity amplitude after calculating is output on display and shows by microprocessor in tachometer circuit plate.The width of Reflector Panel is short, and the average speed acquired is similar to instantaneous velocity.Infrared emission receive integral tube be it is reflective, photoelectric door does not need the two sides for being erected at object of which movement track, and installation is not limited by moving object width.
Description
Technical field
The utility model relates to a kind of speed measuring devices for measuring speed of moving body, especially can be in a manner of infrared external reflection
Detection moving object is to measure the speed of moving object.
Background technique
In the experiment such as linear uniform motion of Middle School Physics, the speed of photoelectric door measurement moving object, base are generallyd use
The method is: installing two groups of " door " shape photoelectric doors on air track, between photoelectric door at a distance, every group of photoelectric door is by red
Outer transmitting tube and infrared receiving tube composition, infrared transmitting tube and infrared receiving tube are separately mounted to " door " column of " door " shape photoelectric door
Inside, infrared transmitting tube direct irradiation is on infrared receiving tube.One barn door is installed, moving object is led in air cushion in moving object
It is moved on rail, successively passes through photoelectric door, by timer record moving object by the time t between photoelectric door.Two groups of photoelectric doors
Distance is s, can solve average speed v=s/t of the moving object between by photoelectric door.But in actual use, photoelectric door needs
Be erected at the both sides of moving object campaign, the width of " door " be it is fixed, the width of " door " limits moving object width；Together
When, farther out, measurement is average speed between two photoelectric doors to the distance between two photoelectric doors, is differed greatly with instantaneous velocity.
Summary of the invention
For the instantaneous velocity for preferably measuring moving object, the utility model provides a kind of single-lens reflex photoelectric door and tests the speed
Device.
The technical scheme adopted by the utility model to solve the technical problem is as follows: single-lens reflex photoelectric door velometer includes light
Electric switch, Reflector Panel, display, input keyboard and tachometer circuit plate, wherein photoelectric door is received by one group of reflective infrared emission
Integral tube composition, reflective infrared emission, which receives integral tube, an infrared transmitting tube and an infrared receiving tube, infrared emission
Pipe and infrared receiving tube are vertically-mounted；Coarse blank sheet of paper is posted on Reflector Panel surface, and has one fixed width, and Reflector Panel is mounted on
In moving object；Tachometer circuit plate is connect with photoelectric door, input keyboard and display respectively, and the width of Reflector Panel passes through input
Keyboard is stored in the microprocessor memory of tachometer circuit plate, and photoelectric door infrared receiving tube receives Reflector Panel and enters irradiated region
It is transported in the microprocessor of tachometer circuit plate with the signal for leaving irradiated region, the velocity amplitude after calculating is output to by microprocessor
It is shown on display.
The width of the Reflector Panel is 2-8cm.
In use, photoelectric door to be mounted on to the track side of moving object, reflective infrared emission is enable to receive integral tube just
Against Reflector Panel.Photoelectric door front irradiation area is passed through in moving object, and infrared transmitting tube is radiated on Reflector Panel, infrared receiving tube
Reflection light is received, record moving object reaches photoelectric door front irradiation area and leaves the time of irradiated region.The width of Reflector Panel
Degree is S, and Reflector Panel is T from entrance photoelectric door irradiated region to the time for leaving irradiated region, can calculate the speed of moving object
Spend V=S/T.
The beneficial effects of the utility model are: the width of Reflector Panel is short, the average speed acquired is similar to instantaneous velocity.
Infrared emission receive integral tube be it is reflective, photoelectric door does not need the two sides for being erected at object of which movement track, and installation is not transported
The limitation of animal body width.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the utility model photoelectric door structural schematic diagram.
Fig. 2 is the schematic block circuit diagram of the utility model tachometer circuit plate.
1. reflective infrared transmitting tube in figure, 2. reflective infrared receiving tubes, 3. partitions.
Specific embodiment
Fig. 1 is photoelectric door structural schematic diagram, and photoelectric door receives integral tube by one group of reflective infrared emission and forms, reflective
It includes an infrared transmitting tube (1) and an infrared receiving tube (2) that infrared emission, which receives integral tube, infrared transmitting tube and infrared is connect
Closed tube is vertically-mounted, with partition (3) mutually light isolation around infrared transmitting tube and infrared receiving tube.
In Fig. 2, tachometer circuit plate circuit includes power-switching circuit, microprocessor, input keyboard circuit and display module
Circuit, wherein power-switching circuit is connected by plug with 220 volts of power supplys of alternating current, power-switching circuit also respectively with micro process
Device, input keyboard circuit are connected with display module circuit, and respectively microprocessor, input keyboard circuit and display module circuit mention
For required voltage；Input keyboard circuit is connected with microprocessor, and the width value of Reflector Panel is passed through the defeated storage of input keyboard
In microprocessor memory；The output that the reflective infrared emission of photoelectric door receives integral tube is connected to the input of microprocessor
End, microprocessor records Reflector Panel arrive separately at the reflective infrared emission of photoelectric door and receive integral tube irradiated region and leave irradiation
The time in area calculates the speed that Reflector Panel receives integral tube by reflective infrared emission according to the width of Reflector Panel.It is aobvious
Show that modular circuit is connected with microprocessor, display respectively, the measuring speed that microprocessor exports is shown over the display.
The reflective infrared emission receives integral tube and uses E18-D80NK diffusing reflection formula infrared photoelectric sensor mould
Block, the effective distance of module detection are 80cm.
The microprocessor uses AT89S51 single-chip microcontroller.
Reflector Panel is fixed in moving object.In use, photoelectric door to be mounted on to the track side of moving object, make to reflect
Formula infrared emission, which receives integral tube, can face Reflector Panel.Moving object reaches photoelectric door front irradiation area, and infrared transmitting tube shines
It penetrates on Reflector Panel, infrared receiving tube receives reflection light, and record moving object reaches photoelectric door front irradiation area and leaves photograph
Penetrate the time in area.
Claims (6)
1. a kind of single-lens reflex photoelectric door velometer, including photoelectric door, Reflector Panel, display, input keyboard and tachometer circuit
Plate forms it is characterized in that: photoelectric door receives integral tube by one group of reflective infrared emission, and reflective infrared emission receives integral tube
There are an infrared transmitting tube and an infrared receiving tube, infrared transmitting tube and infrared receiving tube are vertically-mounted；Reflector Panel surface
Coarse blank sheet of paper is posted, and has one fixed width, Reflector Panel is mounted in moving object；Tachometer circuit plate respectively with photoelectric door,
Input keyboard is connected with display, and the width of Reflector Panel is stored in the microprocessor memory of tachometer circuit plate by input keyboard
In, photoelectric door infrared receiving tube, which receives Reflector Panel and enters irradiated region and leave the signal of irradiated region, is transported to tachometer circuit plate
Microprocessor in, the velocity amplitude after calculating is output on display and shows by microprocessor.
2. single-lens reflex photoelectric door velometer according to claim 1, it is characterized in that: the infrared transmitting tube and infrared
It is isolated around reception pipe with the mutual light of partition.
3. single-lens reflex photoelectric door velometer according to claim 1, it is characterized in that: the reflective infrared emission connects
It receives integral tube and uses E18-D80NK diffusing reflection formula infrared photoelectric sensor module.
4. single-lens reflex photoelectric door velometer according to claim 1, it is characterized in that: the width of the Reflector Panel is
2-8cm。
5. single-lens reflex photoelectric door velometer according to claim 1, it is characterized in that: the circuit of the tachometer circuit plate
Structure includes power-switching circuit, microprocessor, input keyboard circuit and display module circuit, wherein power-switching circuit is logical
Cross plug, be connected with 220 volts of power supplys of alternating current, power-switching circuit also respectively with microprocessor, input keyboard circuit and display mould
Block circuit is connected, and respectively microprocessor, input keyboard circuit and display module circuit provide required voltage；Input keyboard electricity
Road is connected with microprocessor, and the width value of Reflector Panel is stored in microprocessor memory by the way that input keyboard is defeated；Photoelectric door
Reflective infrared emission receive the output of integral tube and be connected to the input terminal of microprocessor, microprocessor records Reflector Panel divides
It is clipped to and receives integral tube irradiated region up to the reflective infrared emission of photoelectric door and leave the time of irradiated region；Display module circuit difference
It is connected with microprocessor, display.
6. single-lens reflex photoelectric door velometer according to claim 5, it is characterized in that: the microprocessor uses
AT89S51 single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006943.1U CN209296757U (en) | 2018-12-03 | 2018-12-03 | A kind of single-lens reflex photoelectric door velometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822006943.1U CN209296757U (en) | 2018-12-03 | 2018-12-03 | A kind of single-lens reflex photoelectric door velometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296757U true CN209296757U (en) | 2019-08-23 |
Family
ID=67656869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822006943.1U Expired - Fee Related CN209296757U (en) | 2018-12-03 | 2018-12-03 | A kind of single-lens reflex photoelectric door velometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296757U (en) |
-
2018
- 2018-12-03 CN CN201822006943.1U patent/CN209296757U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190823 Termination date: 20201203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |