CN101446480A - Object size detection device - Google Patents
Object size detection device Download PDFInfo
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- CN101446480A CN101446480A CNA2007102026646A CN200710202664A CN101446480A CN 101446480 A CN101446480 A CN 101446480A CN A2007102026646 A CNA2007102026646 A CN A2007102026646A CN 200710202664 A CN200710202664 A CN 200710202664A CN 101446480 A CN101446480 A CN 101446480A
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- emitting diode
- size detection
- object size
- detection device
- light
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Abstract
The invention relates to an object size detection device, comprising: a detection platform having a plurality of detection areas, a plurality of detection circuits, a microprocessor and a display device. Each detection circuit comprises a voltage source, a light-sensitive element, a light-emitting diode and a comparator; each detection area is internally provided with a light-sensitive element, and the light-emitting diode is arranged right above the light-sensitive element; the light-sensitive element comprises a first end and a second end; the voltage source is connected with the positive voltage end and the homo-phase input end of the comparator, the first end of the light-sensitive element and the anode of the light-emitting diode respectively; the cathode of the light-emitting diode is grounded; and the reverse-phase input end of the comparator is connected with the second end of the light-sensitive element and the output end is connected with the display device by the microprocessor. The object size detection device has the advantages of low cost and quick detecting speed.
Description
Technical field
The present invention relates to a kind of object size detection device, particularly a kind of object size detection device of the size to the demanding panel of smooth finish.
Background technology
Some product (as MP3) is through customer requirement, need the size that its outward appearance housing carries out the length and width direction be detected, because detecting size carries out behind the buffer station, and the client is strict to the smooth finish of the Appearance Panel, do not allow any scratch, and require all products are examined entirely, therefore have relatively high expectations for the object size detection device that detects size.At present, the conventional method of size detection is to use digital display calliper, this method needs contact measurement, two measuring junctions of main dependence slide calliper rule closely contact with object to be measured measures the result, two measuring junctions of slide calliper rule are made by stainless steel, when measuring, scratch panel easily, and when a plurality of size of needs measurement complex operation, be not suitable for all over products detected.And the advanced method of size detection is to use professional image system, and this method is to adopt non-contact measurement and the fast precision height of speed, but checkout equipment costs an arm and a leg.
Summary of the invention
In view of foregoing, be necessary to provide the object size detection device of the contactless size that a kind of method is simple, cost is low, object to be measured is measured.
A kind of object size detection device, comprise that one has the detection platform of at least one surveyed area, some testing circuits that are arranged in the described detection platform, one microprocessor and a display device, each testing circuit comprises a voltage source, one light activated element, one light emitting diode and a comparer, be provided with described light activated element in each surveyed area, directly over a distance be provided with described light emitting diode, wherein said light activated element comprises one first end and one second end, described voltage source connects the positive voltage terminal and the in-phase input end of described comparer respectively, first end of described light activated element and the anode of described light emitting diode, the plus earth of described light emitting diode, the inverting input of described comparer connects second end of described light activated element, its negative voltage side ground connection, output terminal connects described display device through described microprocessor, the situation that described microprocessor receives the light of light activated element according to object occlusion detection to be measured zone cause described comparator output terminal output voltage variation so that control described display device and show testing result.
Compare prior art, described object size detection device is responded to the situation of extraneous light according to the light activated element of described testing circuit, and control the homophase of described comparer and the voltage of inverting input by regulating described first and second variable-resistance resistance value, make its output terminal output high level or low level, whether meet the requirements with this size that detects object to be measured.
Description of drawings
In conjunction with embodiment the present invention is described in further detail with reference to the accompanying drawings:
Fig. 1 is the circuit diagram of the testing circuit of object size detection device of the present invention.
Fig. 2 is the constitutional diagram that application drawing 1 object size detection device is tested first object.
Fig. 3 is the constitutional diagram that application drawing 1 object size detection device is tested second object.
Fig. 4 is the constitutional diagram that application drawing 1 object size detection device is tested the 3rd object.
Embodiment
Please refer to Fig. 1 and Fig. 2, the better embodiment of object size detection device of the present invention comprises a detection platform 10, some bumping posts 20, some testing circuit 40, a microprocessor 50 and display device 60 that is arranged in the described detection platform.Described detection platform is provided with some groups of surveyed areas 30, that each group surveyed area 30 comprises different colours and stagger one first parallel square region a and one second square region b (as redness and black), the described first square region a and the second square region b also can be designed to other shape as required, are not limited to square.Described microprocessor 50 is controlled described display device 60 according to the output voltage of described testing circuit 40 and is shown testing result.Described microprocessor 50 is arranged at described detection platform 10 inside, and described display device 60 is arranged at described detection platform outside.
Each testing circuit 40 comprises a voltage source Vcc, one first resistance R 1, one second resistance R 2, a light activated element (being a phototriode Q in this better embodiment), a light emitting diode D, a comparer U, one first variable resistor RL1 and a second adjustable resistance RL2.Described voltage source Vcc connects the positive voltage terminal of described comparer U respectively, the emitter of described phototriode Q, the anode of described light emitting diode D reaches successively through described first resistance R 1, the first variable resistor RL1 ground connection, the negative electrode of described light emitting diode D is through described second resistance R, 2 ground connection, the collector of described phototriode Q is through described the second adjustable resistance RL2 ground connection, the in-phase input end of described comparer U is connected in the node between described first resistance R 1 and the described first variable resistor RL1, its inverting input is connected in the collector of described phototriode Q and the node between the described the second adjustable resistance RL2, its negative voltage side ground connection, output terminal connects described display device 60 through described microprocessor 50.For further saving cost, described first resistance R 1, described second resistance R 2, the described first variable resistor RL1 and described the second adjustable resistance RL2 all can delete, promptly direct in-phase input end with described comparer U links to each other with described voltage source Vcc, its inverting input links to each other with the collector of described light activated element, the plus earth of described light emitting diode D.
In the present embodiment, the resistance value of described first variable resistor RL1 and described the second adjustable resistance RL2 is 0 ~ 100 kilo-ohm, and the resistance value of described first resistance R 1 and described second resistance R 2 is respectively 100 kilo-ohms, 100 Europe.Wherein said light activated element also can be selected other light activated elements for use according to deviser's needs, and described phototriode Q is the positive-negative-positive photistor.
Be provided with a described phototriode Q under each described first square zone a and second square zone b, directly over certain distance (greater than object height to be measured) locate all to be provided with a described light emitting diode D, wherein, distance between the lower edge of first square zone a and second square zone b is tolerance distance T, as 0.02mm.
During detection, one first object 100 to be measured is positioned on the described detection platform 10, described bumping post 20 is used to locate described object to be measured 100, when described first square zone a is blocked the illumination that can not receive described light emitting diode D by object 100 to be measured, promptly there is not illumination to be mapped to the interior phototriode Q of described first square zone a, the resistance of then described phototriode Q is very big, the voltage of the inverting input of described comparer U is given described microprocessor 50 less than the voltage of its in-phase input end so the output terminal of described comparer U is exported a high level signal at this moment; And described second square zone b is can receive the illumination of described light emitting diode D the time, promptly there is illumination to be mapped to the interior phototriode Q of described second square zone b, the resistance of then described phototriode Q is very little, the inverting input voltage of described comparer U is greater than its in-phase input end voltage at this moment, so the output terminal of described comparer U is exported a low level signal and is given described microprocessor 50, described microprocessor 50 (is respectively high level according to the voltage of testing circuit output among the above-mentioned first square region a and the second square region b, low level), control described display device 60 and show testing result, be the correspondence position size conforms standard-required of described object to be measured 100, as shown in Figure 2.
Please refer to Fig. 3, when detecting one second object 200 to be measured, when described first square zone a and described second square zone b are all blocked the illumination that can not receive described light emitting diode D by object 200 to be measured, the comparer U of described testing circuit 40 all exports high level and gives described microprocessor 50, the described display device 60 of described microprocessor 50 controls shows testing result, the correspondence position size overgauge requirement of promptly described object 200 to be measured.
Please refer to Fig. 4, when detecting one the 3rd object 300 to be measured, when described first square zone a and described second square zone b are not all blocked the illumination that can receive described light emitting diode D by object 300 to be measured, the equal output low level of comparer U of described testing circuit 40 is given described microprocessor 50, the described display device 60 of described microprocessor 50 controls shows testing result, the requirement under gauge of the correspondence position of promptly described object 300 to be measured.
When described object size detection device is worked, only need to rely on described bumping post to be in place object to be measured, can carry out non-contact detection to the size of object correspondence position to be measured, having eliminated in the testing process contact detects object to be measured is caused scratch, and in the time of need be to the size detection of a plurality of correspondence positions of object to be measured, only needing to increase a plurality of described testing circuits can detect simultaneously, satisfies the requirement that object to be measured is all detected.Described object size detection device cost is low, it is little, simple to operate to take up room, detection speed is fast.
Claims (8)
- [claim 1] a kind of object size detection device, comprise that one has the detection platform of at least one surveyed area, some testing circuits that are arranged at described detection platform, one microprocessor and a display device, each testing circuit comprises a voltage source, one light activated element, one light emitting diode and a comparer, described light activated element is located in the described surveyed area, described light activated element comprises one first end and one second end, described light emitting diode is located at a distance, described surveyed area top, described voltage source connects the positive voltage terminal and the in-phase input end of described comparer respectively, first end of described light activated element and the anode of described light emitting diode, the plus earth of described light emitting diode, the inverting input of described comparer connects second end of described light activated element, its negative voltage side ground connection, output terminal connects described display device through described microprocessor, during detection, described microprocessor is controlled described display device according to the variation of the output voltage of the described comparator output terminal that situation produced of object shading light photosensitive elements reception light emitting diode light to be measured and is shown testing result.
- [claim 2] object size detection device as claimed in claim 1 is characterized in that: described light activated element is a positive-negative-positive phototriode, and its first end, second end are respectively the emitter and the collector of described positive-negative-positive triode.
- [claim 3] object size detection device as claimed in claim 1 is characterized in that: be connected in series one first resistance between the in-phase input end of described voltage source and described comparer.
- [claim 4] is characterized in that as claim 1 or 3 described object size detection devices: be connected in series one first variable resistor between the in-phase input end of described comparer and the ground.
- [claim 5] object size detection device as claimed in claim 1 is characterized in that: be connected in series one second resistance between the negative electrode of described light emitting diode and the ground.
- [claim 6] object size detection device as claimed in claim 1 is characterized in that: be connected in series a second adjustable resistance between the inverting input of described comparer and the ground.
- [claim 7] object size detection device as claimed in claim 1, it is characterized in that: described surveyed area comprises stagger a parallel first area and a second area, be provided with a described phototriode under each zone, directly over a distance one described light emitting diode is set.
- [claim 8] object size detection device as claimed in claim 7 is characterized in that: described first and second zone all is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102026646A CN101446480A (en) | 2007-11-26 | 2007-11-26 | Object size detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007102026646A CN101446480A (en) | 2007-11-26 | 2007-11-26 | Object size detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101446480A true CN101446480A (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007102026646A Pending CN101446480A (en) | 2007-11-26 | 2007-11-26 | Object size detection device |
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| CN (1) | CN101446480A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486269A (en) * | 2015-11-27 | 2016-04-13 | 北大方正集团有限公司 | Printed circuit board electroplating clamp point location detection circuit |
| CN113058862A (en) * | 2021-03-18 | 2021-07-02 | 代智勇 | Dimension detection device for producing IC card reader |
-
2007
- 2007-11-26 CN CNA2007102026646A patent/CN101446480A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486269A (en) * | 2015-11-27 | 2016-04-13 | 北大方正集团有限公司 | Printed circuit board electroplating clamp point location detection circuit |
| CN105486269B (en) * | 2015-11-27 | 2019-06-04 | 北大方正集团有限公司 | Printed circuit board plating folder Point location detection circuit |
| CN113058862A (en) * | 2021-03-18 | 2021-07-02 | 代智勇 | Dimension detection device for producing IC card reader |
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Open date: 20090603 |