DE102007044923A1 - License testing device for vending machine, has optical sensor for determining rotating speed of grid wheel, and character recognition device for scanning license with frequency, based on rotating speed of grid wheel - Google Patents

Abstract

The device has a speed control module (3) comprising a gear set (31). An accelerating gear (32) is connected with the gear set. An optical grid device (33) is rotatably shifted by the accelerating gear. An optical sensor (333) determines rotating speed of an optical grid wheel (332). A character recognition device (4) scans a license, which is included in a license insertion port, with a frequency based on the rotating speed of the optical grid wheel. The gear set comprises an inner gear wheel and a friction strip.

Description

The The present invention relates to license testing equipment.

in the Over the course of the rapid developments of the technology ours has become Lifestyle changed, and various vending machines are used everywhere to make different Sell products without operator. These vending machines are very welcomed due the benefits of saving a lot of work and giving people convenience bring. Z. B. has a Q shop the advantages of scientific intelligence, faster services and a quick implementation the payment. A Q shop can sell vending machines for sale Drinks, Cigarettes, ice cream, tickets, commemorative coins, key rings or even hamburgers and Offer pasta. Nowadays, virtual stores are set up to shop online to enable what about the buyers permitting, To buy millions of products.

normal Vending machines do not limit sales to persons of a certain age. ordinary Vending machines therefore generally sell such goods as fruit juice drinks, carbonated ones Beverages, Food etc. These vending machines can not sell goods, subject to age control, such as As cigarettes or alcoholic drinks or other controlled goods such. B. Medicines, strong acid or alkaline cleaning agents or other dangerous objects. Around to prevent young children from buying age-controlled goods or to prevent unqualified people from being controlled objects To buy, a vending machine must be for sale from age-controlled or otherwise controlled goods are equipped with a security system, about age or identity recognize the customer.

in the As technology evolves and licensing systems are introduced, people may need to different licenses for get different qualifications. One person can have many carry different licenses. Ordinary licenses or permissions can easily be copied. To fake technology was developed and counteracted against counterfeiting the issue of licenses applied. There is a testing facility for the Authenticity of licenses for vending machines, which checks the authenticity of a license by licensing the license is irradiated by two or more different wavelengths, then the changes tested the amplitudes thus generated and then continue to compare with reference data that forgeries should prevent.

The Construction of a vending machine for sale of age-controlled or specially controlled goods, therefore, the detection of the actual Age or identity consider the customer. The customer must have a personal identification card (such as a driver's license, ID card, IC card, etc.) in the machine to the actual Age or his identity too check. The vending machine allows the transaction only when the age or the identity tested by the customer and is recognized. However, the problem of fake licenses must be be considered and avoided. In the course of the fast The development of computer technology can scan malicious people with a computer that uses copying and printing technology to fake Make licenses to sell money or goods from sellers fraudulently Intention to receive. A vending machine for sale from age-controlled or specially controlled goods must therefore be accompanied by a license test facility high quality equipped be different characteristics (watermarks, paper quality, personal data, etc.), to provide security.

• 1. Wenn ein Kunde eine Lizenz in die Lizenzprüfeinrichtung einführt, kann die Geschwindigkeit der Einführung der Lizenz die Abtastqualität der Lizenz beeinflussen. Da das Abtastintervall konstant ist, kann übermäßig hohe oder niedrige Einfügungsgeschwindigkeit zu einer Verzerrung des abgetasteten Bildes und zu einem Fehler bei der Erkennung führen.
• 2. Die Tiefe der Einführung der Lizenz beeinflusst das Abtastergebnis. Da die Zeichenerkennungseinrichtung das gesamte Bild der Detektionszone der Lizenz dadurch erhält, dass die Detektionszone wiederholt mehrere Male abgetastet wird, kann die Zeichenerkennungseinrichtung ein unvollständiges Bild der Detektionszone erhalten, wenn der Kunde die Lizenz übermäßig tief in die Lizenzprüfeinrichtung eingeführt hat.
• 3. Häufige Fehler bei der Lizenzerkennung führen zu großen Zeitverlusten und machen es für den Kunden unzweckmäßig und unbequem, was den Willen des Kunden verringert, den Dienst noch einmal zu benutzen.

However, conventional license testers are unsatisfactory in their function due to the following disadvantages.

• 1. When a customer introduces a license to the license review facility, the speed of the license's introduction may affect the scanning quality of the license. Since the sampling interval is constant, excessively high or low insertion speed can result in distortion of the scanned image and error in detection.
• 2. The depth of the introduction of the license influences the scanning result. Since the character recognizer obtains the entire image of the detection zone of the license by repeatedly scanning the detection zone several times, the character recognizer can obtain an incomplete image of the detection zone if the customer has introduced the license excessively deep into the license examiner.
• 3. Frequent errors in license recognition lead to large time losses and make it inconvenient and inconvenient for the customer, which reduces the customer's will to use the service again.

It is therefore desirable a license testing facility to solve the above-mentioned problems.

The present invention has been made in consideration of these circumstances. According to one aspect of the present invention, the license checking device has a cover shell, a circuit board, a speed control module, a character recognition device, an authentication device, and a lower block.

If a license in the license testing facility introduced is a friction band of the speed control module in Turning becomes an optical grating of an optical grating device of the speed control module accelerates by means of a change the translation ratio between a gear set and an acceleration gear of the speed control module. Therefore, the optical grating device brings the character recognition facility to do this, the inserted license a relatively larger number to be tested by times resulting in a fine and accurately scanned image for accurate recognition of license characters is generated, whereby the character recognition is improved.

According to one Another aspect of the present invention starts the character recognizer a step-shaped Scanning, when the friction belt is rotated by a predetermined angle Win is, whereby the sampling effect of the character recognition unit is constant and free from the influence of the insertion speed of the license is what reduces the distortion of the scanned image.

According to one more solves another aspect of the present invention, when a license to the license exam added that is inserted License a trip button the circuit board to turn on the power first, and then forces the gear set to rotate, thereby causing is that the license plate recognition device and the authenticity checking device with the testing start the license. The invention therefore eliminates the problem of incomplete scanned image due to excessive insertion or inadequate introduction of the license, ensuring integrity license scanning is improved, i. H. that the invention the frequency successful license check improves the ease of use of the license review facility.

According to one more Another aspect of the present invention is the speed control module small modular gears which saves a lot of installation space to meet the requirements to meet a small thickness and a change the installation positions and / or the angle of the character recognition device to enable and the authentication device for testing a different type or a different kind of License to use.

The Invention will be described below with reference to an advantageous embodiment with reference to the attached Drawings, for example, described. Show it:

1 a perspective view of a license checking device of the present invention;

2 an exploded view of a license checking device of the present invention;

3 another exploded view of a license checking device of the invention;

4 an exploded view of the speed control module of the license checking device of the present invention;

5 Fig. 10 is a block diagram explaining the operation of the license checker of the present invention;

6 a perspective cross-sectional view of the optical grating device of the license check device of the present invention (when it is not in operation);

7 corresponding 6 however, the optical grating device is shown in operation;

8th a schematic drawing showing the operation of the character recognition device of the license examination device according to the present invention; and

9 a schematic drawing showing the operation of the authenticity checking device of the license inspection device of the invention.

Referring to the 1 to 4 there is shown a Lizenzprüfeinrichtung in accordance with the present invention, which is a cover shell 1 , a circuit board 2 , a speed control module 3 , a character recognition device 4 an authenticity tester 5 and a lower block 6 having.

The cover shell 1 has a substantially U-shaped cross section and limits a receiving space 10 ,

The circuit board 2 has circuits, a set of LEDs (light emitting diodes) 21 and related electronic components (such as resistors, capacitors, etc.) installed in the top wall include a plurality of electrical connectors 23 , which are installed in the upper wall near the back, and a release switch 22 in the lower wall near the front.

The speed control module 3 has a gear set 31 , an acceleration gearbox 32 , an optical grating device 33 and a plurality of axle bearings 34 on. The gear set 31 consists of an inner gear 311 , a friction band 312 and a plurality of first outer gears 313 , The friction band 312 is an endless band that is on the circumference of the inner gear 311 is appropriate. The first outer gears 313 are in engagement with the inner gear 311 , The acceleration gear 32 has a first inner gear 321 that with the first outer gear 313 is engaged, an inner gear block 322 and a plurality of second outer gears 323 on that in the inner gear block 322 attached and engaged with the same. The optical grating device 33 has a second inner gear 331 that with the second outer gears 323 is engaged, an optical grid 332 containing a plurality of light blocking parts 3321 and translucent parts 3322 which are arranged alternately around the circumference for blocking light or transmitting light, and an optical sensor 333 on, which is a light-emitting device 3331 and light receiving device 3332 having on two opposite sides with respect to the light-blocking parts 3321 and the light-transmitting parts 3322 of the optical grid wheel 332 are arranged. The axle bearings 34 wear the gear set 31 , the acceleration gear 32 and the optical grating device 33 separated from each other for trouble-free rotation without hindering each other.

The character recognition unit 4 has a light guide 41 for guiding light in a predetermined direction, a linear scanner 42 standing on one side of the light guide 41 is arranged, and a linear sensor 43 which is electrically connected to the linear scanner 42 connected is.

The authenticity testing device 5 has a light-emitting device 51 and a light sensor 52 on. The light-emitting device 51 and the light sensor 52 are set to each other at a predetermined inclined angle.

The lower block 6 has a plurality of receiving compartments 60 that the speed control module 3 , the character recognition device 4 and the authentication device 5 and it is a dust cap 60 arranged on one side for protection against dust and shocks.

During the installation of the license checker, the speed control module will become 3 , the character recognition device 4 and the authentication device 5 in the receiving compartments 60 attached to the lower block, and then it becomes the dust cap 61 at the bottom block 6 attached, abutting against the speed control module, and then the lower block 6 on the bottom wall of the circuit board 2 and the cover shell 1 with fastening devices 7 attached to the circuit board 2 , the character recognition device 4 and the authentication device 5 in the recording room 10 inside the cover shell 1 to keep, causing the speed control module 3 , the character recognition device 4 and the authentication device 5 electrically with the trigger switch 22 the circuit board 2 be kept connected.

Next are the inner gear 311 and the outer gears 313 of the gear set 31 and the first inner gears 321 of the acceleration gear 32 modular gears. The inner gear block 322 , and the second outer gears 323 of the acceleration gear 32 and the second inner gear 331 the optical grating device 33 are the same modular gears, preferably from a gear module of 0.3 to 0.4. Due to the small size, the gears do not take up much installation space. Therefore, the license checker may be small in size.

• (100) Führe eine zu prüfende Lizenz in die Lizenzprüfeinrichtung ein und versetze dann den Getriebesatz 31 in Drehung.
• (101) Der Getriebesatz 31 treibt das Beschleunigungsgetriebe 32 an, sich zu drehen, wodurch Drehung des optischen Gitterrades 332 der optischen Gittereinrichtung 33 mit verhältnismäßig höherer Geschwindigkeit bewirkt wird.
• (102) Die lichtempfangende Einheit 3332 des optischen Sensors 333 der optischen Gittereinrichtung 33 empfängt Lichtsignale von der lichtemittierenden Einrichtung 3331 mit Unterbrechungen während Drehung des optischen Gitterrades 332, und zur selben Zeit treibt der optische Sensor 333 die Zeichenerkennungseinrichtung 4, die Lizenz eine gleiche Anzahl von Malen abzutasten.
• (103) Die Zeichenerkennungseinrichtung 4 setzt die vielen abgetasteten Signale in ein abgetastetes Bild hoher Auflösung für Erkennung zusammen.

Referring to 5 The license testing company of the license testing facility includes the steps:

• (100) Introduce a license to be checked into the license checker and then transfer the gear set 31 in rotation.
• (101) The gear set 31 drives the acceleration gearbox 32 to turn, causing rotation of the optical grid wheel 332 the optical grating device 33 is effected at a relatively higher speed.
• (102) The light-receiving unit 3332 of the optical sensor 333 the optical grating device 33 receives light signals from the light-emitting device 3331 intermittently during rotation of the optical grating wheel 332 , and at the same time drives the optical sensor 333 the character recognition device 4 to scan the license an equal number of times.
• (103) The character recognition device 4 assembles the many sampled signals into a high resolution sampled image for recognition.

Referring to the 6 to 8th and again 2 and 3 When a customer inserts a license into the license checker, the license triggers the trigger switch 22 off to turn on the power supply and offset the friction band 312 in rotation. At this time, the inner gear becomes 311 with the friction band 312 turned. If the inner gear 311 Turned by one turn, the first outer gears become 313 rotated by several turns (the tooth Number of the first outer gear 313 is lower than that of the inner gear 311 ). During the rotation of the first outer gears 313 becomes the first inner gear 321 through the first outer gears 313 rotated, causing rotation of the second outer gears 323 in the inner gear block 322 of the acceleration gear 32 is caused by an equal number of revolutions, and therefore becomes the second inner gear 331 the optical grating device 33 with the two th outer gears 323 turned to the optical grid 332 the optical grating device 33 to turn.

With the help of transmission through the gear set 31 , the acceleration gear 32 and the optical grating device 33 becomes the optical grid wheel 332 rotated by a number of revolutions, which is much larger than the rotational movement of the gear set 31 , During the rotation of the optical grating wheel 332 receives the light-receiving unit 3332 of the optical sensor 333 the optical grating device 33 Light signals from the light-emitting device 3331 intermittently, ie that the light receiving unit 3332 no pulse signal is received when light from the light-emitting device 3331 through a light blocking part 3321 of the optical grid wheel 332 is blocked; or receives a pulse signal when light from the light-emitting unit 3331 through a light-transmitting part 3322 of the optical grid wheel 332 passes. After the license has been introduced into the license checker by the customer, which causes the trigger switch 22 is triggered, the light-emitting devices 21 the circuit board 2 turned on to emit light, and the light guide 41 the character recognition device 4 carries light from the light-emitting devices 21 to the license. When the light-receiving unit 3332 receives a pulse signal, the optical sensor sends 333 a signal to the character recognition device 4 , which causes the linear sampler 42 the character recognition device 4 scanned reflected light from the license, whereby the data of the license is obtained.

According to the present preferred embodiment, the number of light blocking parts 3321 and the number of light transmitting parts 3322 of the optical grid wheel 332 equal 400 , If the optical grid wheel 332 is rotated by one revolution, the light-receiving unit receives 3332 a pulse signal from the light-emitting device 3331 , The pulse signal is a continuous waveform from which each peak and each well produce a signal "1" and a signal "0", respectively, whereby the optical sensor 333 the character recognition device 4 drives the license 400 time to sample if the optical grid 332 is rotated by one turn. The size of the optical grid wheel 332 and the number of light-blocking parts 3321 and the light-transmitting parts 3332 of the optical grid wheel 332 can be changed to adapt to different applications.

When the customer inserts a license into the license checker, the distance from the entry point (place of commencement of the scan) to the positioning point (place of completion of the scan) is 4 cm. The invention uses the speed control module 3 to the character recognition device 4 to control, thereby causing the character recognition device 4 scanning the inserted license. With the help of the changed gear ratio for accelerating the sampling effect of the character recognition device 4 keys the character recognition device 4 the inserted license will take a large number of copies within these 4 cms, producing a fine and accurate scanned image for accurate recognition of license characters. Since the character recognition device 4 with the gradual scanning begins when the friction band 312 is rotated by a predetermined angle, the sampling effect of the character recognition device 4 constant and free from the speed of insertion factor of the license, which reduces the distortion of the scanned image.

at In practical use of the present invention, the license review facility exactly and quickly the inserted Check license thereby improving the quality of service is improved and customers are encouraged to consume again.

If the customer has added a license to the license reviewer, the inserted license will touch the trigger button 22 first, which causes the trigger switch 22 turns on the power. Uniform insertion of the license brings the friction band 312 in rotation, causing the character recognition device 4 and the authentication device 5 be driven synchronously. The invention therefore overcomes the problem of an incomplete scanned image due to over-insertion or under-deployment of the license, thereby improving the integrity of the license scan. When the license is withdrawn from the license checker, the trigger switch becomes 22 turned off, and therefore the power is turned off, reducing the power consumption is reduced.

Referring to 8th starts when the speed control module 3 is driven by the license introduced, the reflection based license plate recognition device 4 To check the zone of the date of birth on the inserted license. During the movement of the inserted license leads the light guide 41 the character memory voltage device 4 Light from the light-emitting devices 21 on the circuit board 2 to the birth date zone of the inserted license so that the characters within the birth date zone are scanned on the imported license and then compared to the current date, thereby checking whether or not the holder of the license has the legal age. The data thus obtained will be sent to the vending machine for further processing. The reading of the birth data is done using the light emitting devices 21 the circuit board 2 performed to illuminate the zone of birth data of the license, using the linear scanner 42 scans reflected light. Dark and light surface areas of the birth date zone on the license have different reflective properties. Therefore, the reflected light emitted by the linear scanner 42 is detected by means of an optical character recognition (OCR) method, whereby the data of the zone of birth data are read out on the license. In addition to recognizing the date of birth, the character recognition device 4 also recognize the name, ID number, license number, qualification certificate number, etc., which records the name, birthday, ID number, etc. of the customer and the name of the merchandise. A vending machine equipped with a license testing device of the present invention can therefore provide age-controlled goods (such as tobacco, alcoholic beverages, magazines, condoms, etc.) and controlled goods (such as medicines, strong acid detergents, or the like) Bases, weapons, etc.). When controlled goods are sold, the sale is stored in a file for further searching and verification. The recognition of the age of the character recognition device 4 is simply an example of the present invention. In actual practice, the character recognition device 4 are used to check the name, ID number, type of license and also the license number of a license.

Referring to 9 and again 3 When a license is inserted into the license review facility, the authentication facility begins 5 to check the authenticity or validity of the license. At this time, the light-emitting device emits 51 Shining light on the characteristics of the license against counterfeiting, such as Watermark, seal, invisible bar code or laser mark, and the light sensor 52 receives the waveform data of the reflected light from the counterfeit characteristics of the license to be processed by a recognition process, checking the authenticity or validity of the license. The light-emitting device 51 and the light sensor 52 may also be arranged to check the authenticity or validity of the inserted license by means of checking the passage of transmitted light of the license in order to check the paper quality / thickness of the license. With the help of this test method, any brackets, stickers or changes can be detected. The authenticity testing device 5 can therefore check the authenticity or validity of a license by examining the counterfeit characteristics and paper thickness.

The aforementioned light-emitting devices 21 and 51 can be designed to emit visible light such. As red light, blue light or green light, or invisible light such. B. ultraviolet light. The installation locations and / or angles of the character recognition device 4 and the authenticity checking device 5 in the license test facility are determined by the type, type, counterfeit characteristics or detection zone of the license to be tested.

• 1. Wenn eine Lizenz in die Lizenzprüfeinrichtung eingefügt wird, um das Reibungsband 312 des Geschwindigkeitssteuermoduls 3 in Drehung zu versetzen, wird das optische Gitterrad 332 der optischen Gittereinrichtung 33 beschleunigt mit Hilfe des Getriebewechselverhältnisses zwischen dem Getriebesatz 31 und dem Beschleunigungsgetriebe 32. Daher treibt die optische Gittereinrichtung 33 die Zeichenerkennungseinrichtung 4, die Lizenz eine verhältnismäßig größere Anzahl von Malen abzutasten, wodurch ein feines und genaues abgetastetes Bild für genaue Erkennung der Lizenzzeichen erhalten wird, was die Zeichenerkennung verbessert.
• 2. Da die Zeichenerkennungseinrichtung 4 stufenweises Abtasten beginnt, wenn das Reibungsband 312 um einen vorbestimmten Winkel gedreht wird, ist die Abtastwirkung der Zeichenerkennungseinrichtung 4 konstant und frei vom Faktor der Einführungsgeschwindigkeit der Lizenz, wodurch Verzerrung des abgetasteten Bildes verringert wird.
• 3. Wenn eine Lizenz in die Lizenzprüfeinrichtung eingefügt wird, löst die eingefügte Lizenz den Auslöseschalter 22 der Schaltungsplatine 2 aus, um zuerst die Stromversorgung einzuschalten und dann den Getriebesatz 31 in Drehung zu versetzen, wodurch bewirkt wird, dass die Zeichenerkennungseinrichtung 4 und die Echtheitsprüfeinrichtung 5 mit dem Prüfen der Lizenz beginnen. Daher beseitigt die Erfindung das Problem eines unvollständig abgetasteten Bildes aufgrund von übermäßiger Einfügung oder unzureichender Einfügung der Lizenz, wodurch die Integrität der Abtastung der Lizenz verbessert wird, d. h., dass die Erfindung die Erfolgsrate der Lizenzprü fung verbessert, wodurch die Verwendung der Lizenzprüfeinrichtung erleichtert wird.
• 4. Das Geschwindigkeitskontrollmodul 3 verwendet kleine modulare Zahnräder, wodurch viel Installationsraum eingespart wird, um eine geringe Dicke zu ermöglichen und um die Änderung von Installationsstellungen und/oder – winkeln der Zeichenerkennungseinrichtung 4 und der Echtheitsprüfeinrichtung 5 zu ermöglichen, um unterschiedliche Typen von Lizenzen zu prüfen.

In actual practice, the license validator of the present invention has the following features and advantages:

• 1. When a license is inserted in the license checker, the friction band 312 of the speed control module 3 to turn the optical grating wheel 332 the optical grating device 33 accelerated by means of the gear change ratio between the gear set 31 and the acceleration gear 32 , Therefore, the optical grating device drives 33 the character recognition device 4 to sample the license a relatively larger number of times, thereby obtaining a fine and accurate scanned image for accurate recognition of the license characters, which improves character recognition.
• 2. Since the character recognition device 4 Gradual scanning begins when the friction band 312 is rotated by a predetermined angle, the sampling effect of the character recognition device 4 constant and free from the factor of the launch speed of the license, which reduces distortion of the scanned image.
• 3. When a license is added to the license checker, the inserted license triggers the trigger switch 22 the circuit board 2 to turn on the power first and then the gearset 31 in rotation, causing the character recognition device 4 and the authentication device 5 start by checking the license. Therefore, the invention overcomes the problem of an incompletely scanned image due to over-insertion or insufficient insertion of the license, thereby improving the integrity of scanning the license, ie Invention improves the success rate of the license check, thereby facilitating the use of the license checker.
• 4. The speed control module 3 uses small modular gears, which saves a lot of installation space to allow a small thickness and to change the installation positions and / or angles of the character recognition device 4 and the authenticity checking device 5 to allow for different types of licenses.

Generally speaking, the invention uses a speed control module 3 that made of a gear set 31 , an acceleration gearbox 32 and an optical grating device 33 is formed to the operation of the character recognition device 4 and the authenticity checking device 5 to accelerate, whereby a fine scan image is obtained and the recognition resolution is improved. Because of the use of relatively smaller modular gears in the speed control module 3 In order to save installation space, the license checking device has a small thickness.

Even though a particular embodiment of Invention detailed for For illustration purposes, various modifications may be made and improvements are made without mind and scope to deviate from the invention. Therefore, the invention should only by the attached claims be limited.

1

cover shell

10

accommodation space

2

circuit board

21

LED

22

trigger switch

23

electrical Interconnects

3

Speed control module

31

gearset

311

Interior gear

312

friction tape

313

First outside gear

32

acceleration gear

321

first inner gear

322

inner gear unit

323

Second outer gear

33

optical grid means

331

second inner gear

332

optical grid wheel

3321

Light Blocking part

3322

Light Lasse Santander part

333

optical sensor

3331

light emitting Facility

3332

Light receiving end Facility

34

axle bearings

4

Character recognition means

41

lighting

42

linear scanner

43

linear sensor

5

authenticity testing

51

light emitting Facility

52

light sensor

6

lower block

60

receiving compartment

61

dust cap

7

fastening device

Claims (8)

License checker, usable in a vending machine behind a license entry slot for checking a license, characterized in that it comprises: a speed control module ( 3 ), which has a transmission set ( 31 ) rotated by a license inserted in the license insertion slot, an acceleration gear ( 32 ), with the gear set ( 31 ), and an optical grating device ( 33 ), which by the acceleration gear ( 32 ) is rotatable, and an optical sensor ( 333 ), which is adapted to the rotational speed of the optical grating wheel ( 332 ) determine; and a character recognition device ( 4 ) adapted to scan a license inserted in the license insertion slot at a frequency which depends on the rotational speed of the optical grating wheel ( 332 ) depends. License testing device according to claim 1, characterized in that the gear set ( 31 ) an inner gear ( 311 ) and a friction band ( 312 ), which on the circumference of the inner gear ( 311 ) and is movable by a license, which is inserted in the license insertion slot to the inner gear ( 311 ), wherein the acceleration gear ( 32 ) and the optical grating device ( 33 ) have a set of gear wheels to the optical grid ( 332 ) to accelerate. License testing device according to claim 1 or 2, characterized in that the optical grid ( 32 ) a plurality of light-blocking parts ( 3321 ) and light transmitting parts ( 3322 ), which are alternatively arranged around the circumference of the same to block light and transmit light, wherein the optical sensor ( 333 ) a light-emitting unit ( 3331 ) and a light receiving unit ( 3332 ), which on two opposite sides of the light-blocking parts ( 3321 ) and the light-transmitting parts ( 3322 ) of the optical grating wheel ( 332 ) are arranged. License testing device according to one of the claims 1 to 3, which further comprises a cover shell ( 1 ), which has a receiving space ( 10 ), in which the speed control module ( 3 ) and the character recognition device ( 4 ), and a circuit board ( 2 ) located in the receiving space ( 10 ) and electrically connected to the speed control module ( 3 ) and the character recognition device ( 4 ) is connected to the operation of the speed control module ( 3 ) and the character recognition device ( 4 ) to control. License testing device according to one of claims 1 to 4, characterized in that the circuit board ( 2 ) a set of resistors, capacitors and light-emitting units ( 21 ) that the character recognition device ( 4 ) a light guide ( 41 ) for guiding light from the light-emitting devices ( 21 ) of the circuit board ( 2 ) has a Li zenz introduced into the license insertion slot, wherein a linear scanner ( 42 ) is adapted to scan light reflected by the license to which the light guide ( 41 ) the light from the light-emitting devices ( 21 ) of the circuit board ( 2 ) and wherein a linear sensor ( 43 ) of the character recognition device ( 4 ) with the linear scanner ( 42 ) connected is. License testing device according to one of claims 1 to 5, characterized in that it comprises a lower block ( 6 ) located in the receiving space ( 10 ) within the cover shell ( 1 ), which lower block ( 6 ) a plurality of receiving compartments ( 60 ), in which the speed control module ( 3 ) and the character recognition device ( 4 ) are housed, with a dust cap ( 61 ) is disposed on one side thereof for protection against dust and shocks. License testing device according to one of claims 1 to 6, characterized in that the circuit board ( 2 ) an authenticity checking device ( 5 ), which is adapted to check the authenticity or the validity of a license inserted in the license insertion slot. License testing device according to one of claims 1 to 7, characterized in that the authenticity checking device ( 5 ) a light-emitting device ( 51 ) adapted to emit light to an anti-counterfeiting characteristic of a license inserted in the license insertion slot, and further comprising a light sensor (10); 52 ) adapted to receive, from the counterfeiting characteristic, light of the license to which the light of the light-emitting device ( 51 ) of the authenticity checking device ( 5 ) has been emitted.