CN209015203U - Contactless tablet checks counting device - Google Patents

Abstract

The utility model relates to contactless tablets to check counting device.Counting device includes: laser, light-gathering concave-surface mirror, mechanical pendulum mirror, photoelectric conversion unit, electric signal processing unit, central processing unit, power supply；The central processing unit is connected with laser, mechanical pendulum mirror, photoelectric conversion unit, electric signal processing unit respectively；The power supply is whole device power supply.Using laser scanning engine, overcomes some light source detections and check application the weakness for counting limitation, expand industry field.

Description

Contactless tablet checks counting device

Technical field:

The utility model relates to mode identification technologies, and in particular to contactless tablet checks counting device.

Background technique:

In the industrial production, there is numerous areas to be directed to tablet and check Counts, such as punching press industry, timber processing Industry, the production of industrial circuits plate, industrial plastic board product industry etc., the product for needing to check such as iron plate, plank, various modelings The sheet article and board of the various materials such as flitch card, highway passing card, bank card.Which forms in industrial production Largely check the demand of counting instruments.The instrument and equipment counted both at home and abroad to tablet at present is roughly divided into two major class.

First major class: desk-top tablet checking device, this kind of product are mainly located on station, by that will need It is put into after the product placement checked is neat and checks window or position is checked accordingly, product needs to be placed on the clear of formulation Point region, is calculated the quantity of tablet by the method analyzed after taking pictures image, and such equipment needs clear The product and camera of point are in a certain distance, since desktop computer volume itself is smaller, so to the tablet checked The volume and shape need of product are higher, are better than irregular product to the product effect of regular shape.Therefore desk-top product pair Application scenarios and technique require too high, use not flexible, use space and operating procedure are very limited, such as shape Sheet products that are larger or being not fixed shape can not just be checked, and such as the plank of factory, the shapes such as sheet iron of punching press are biggish Product.Although such product can check portioned product, versatility is not strong in practical applications, and cost use cost is high.

Second major class: handheld apparatus, hand-held tablet checks equipment and is mainly used for checking plastic plate currently on the market Card class product, bank card, access card etc, be exactly our common hand-held contact number card devices, and basic principle is using short Infrared ray is issued apart from infrared emission tube, then signal is received by another infrared receiver, signal passes through different Jie The surface of matter has different variations, and the data information received is calculated by the processor inside equipment, analyzes knowledge Not, to calculate the quantity for checking card.

Common hand-held number card device requires measurand card to have to marshalling, by flat side down, piece and piece it Between gap need to control strictly can just be normally carried out counting and check very.Measurement error, test product are had if out-of-flatness Both ends cannot want sundries.

Meanwhile Handheld laser R-T unit realizes information collection, usual this kind of laser aid to laser aid and by The requirement of the distance between survey object is very stringent, and this requires in use process, it is necessary to handheld apparatus are close to application and drawn It crosses just be normally carried out and checks counting.Because measurement distance sensitive, to tested board object put require it is higher, due to operation side Formula requirement must be close to application and at the uniform velocity streak, and this provides for improved the operation of user requirements.Simultaneously because needing to be close to quilt It surveys object and at the uniform velocity streaks this operation requirement, limit the application scenarios of this kind of device, for example measurand is not easy to move, and does not allow Neat face is easily provided steadily to streak for device, be not easy to device above from the beginning stroke to tail；There cannot be scuffing etc. It can not achieve abutting with other sundries Deng, application both ends at the uniform velocity to streak, for example card, in box, box height is than card Piece wants high application scenarios to be all not suitable for such device.

Summary of the invention:

The utility model encounters to solve the problems, such as to check tablet counting process in production and living, such as application scenarios Not flexible problem is checked environment space limitation problem where product.

Counting principle of the utility model of checking mainly utilizes laser scanning surface characteristics, then is believed by reflected light Number record principle is big by laser scanning system and information processing system two to realize a kind of equipment that tablet is checked, whole system Part forms.

Specific technical solution is as follows:

Contactless tablet checks counting device, comprising: laser, light-gathering concave-surface mirror, mechanical pendulum mirror, photoelectric conversion list Member, electric signal processing unit, central processing unit, power supply；The laser that the laser issues after the reflection of light-gathering concave-surface mirror, then It is reflected through mechanical pendulum mirror, is finally irradiated to the side of tested tablet；Through being tested the offside reflection of tablet, part light is through machinery Mirror reflection is put, then after the reflection of light-gathering concave-surface mirror, into photoelectric conversion unit；Photoelectric conversion unit believes light after converting signal It number is converted to electric signal, electric signal processing unit checks counting according to the transonic feature realization in tablet interface；The center Processing unit is connected with laser, mechanical pendulum mirror, photoelectric conversion unit, electric signal processing unit respectively；The power supply is entire Device power supply.

One of preferred embodiment, further includes: the signal amplification circuit between photoelectric conversion unit and signal processing unit. The preferred embodiment it is further preferred, the signal amplification circuit includes two-stage amplifying circuit, it may be assumed that first order amplifying circuit and Second amplifying circuit；First order circuit carries out amplitude control using agc circuit, and second level amplifying circuit carries out clutter and filters out, and is Subsequent signal processing is ready.

The two of preferred embodiment, the laser are LED laser pipe.

The three of preferred embodiment, further includes: input-output unit, display unit, the number being connected respectively with central processing unit According to transmission unit.The program it is further preferred, further includes: the intelligent sound being connected respectively with central processing unit enters for list Member, angular transducer.

The contactless tablet realized on the above device checks method of counting, comprises the following processes:

Step 1: central processing unit starts laser and issues point light source, and starting mechanical pendulum mirror is put within the scope of certain angle It is dynamic；

Step 2: point light source successively passes through the reflection of light-gathering concave-surface mirror, the reflection of mechanical pendulum mirror, and continuous swing forms threadiness and sweeps Area is retouched, is irradiated on the section and gap of tested tablet；

Step 3: fraction of laser light is reflected；

Step 4: reflected laser passes sequentially through the reflection of mechanical pendulum mirror, light-gathering concave-surface mirror collects optically focused, projects light In electric converting unit；

Step 5: photoelectric conversion unit will reflect back into the optical signal come and be converted into electric signal；

Step 6: signal processing unit calculates the quantity of tablet according to the wave crest of electric signal, trough quantity.

Above-mentioned contactless tablet checks the preferred embodiment of method of counting, further includes as follows between step 5, step 6 Process:

Step 5.1: electric signal is by by modulus conversion chip being converted into digital signal after repeatedly amplifying conditioning, then will count Word signal sends processing unit to.

Further preferred scheme further includes following process between step 5.1, step 6:

Step 5.2: original waveform first has to effective threshold value be set after amplification, using Fourier transform pairs wave by amplification The amplitude of shape is adjusted and limits, and judges effective waveform, eliminates invalid clutter；

Step 5.3: number amplification and adjustment are carried out again, eliminate the spike in effective waveform, raised interference waveform, So that waveform is intended to reference waveform, is handled convenient for counting.

The usage mode of the utility model is first introduced, tablet is put neatly first, is issued using laser Point light source reciprocal can be irradiated by mechanical pendulum mirror on the tablet side arranged, form scanning surface, laser is in tablet Side and the gap between them return to the light come and the optical signal received are converted to electric signal by photoelectric conversion unit, by It is different in different objects surface characteristics, so that reflected luminous intensity is different, by after photoelectric conversion in digital signal table The signal form revealed is just different, finally calculates the quantity of tested tablet.

The good effect of the utility model is:

The utility model solves the problems, such as that tablet counting process is checked in production and living to be encountered, not such as application scenarios Flexible problem is checked environment space limitation problem where product, is checked beyond the region of objective existence shape disunity problem, distinctive appearance product or Person is the problems such as large product can not be checked.

Many defects that desktop computer checks tablet are overcome, as desktop apparatus needs to move application to desktop apparatus On fixed position, the shape and size of product will receive restricted problem.

It is currently used in the handheld apparatus for checking tablet, needs steadily to be close at the uniform velocity streak the measuring surface of measurand, It is too high to operator's requirement, it is easy that measurand is caused to damage, the piece for be easy to causeing tablet product is moved to measurand Scuffing between piece, is adjacent to streak and is easy to cause to scratch to application measurement section etc., while the time and making with using With the increase of frequency, damage will also result in counting instruments itself.Current this contact equipment checks process in entire counting Middle low efficiency, it is inevitable since the property of mode of operation determines that active device needs to do in calculating process many cooperatings The case where will cause and use the time long during counting is checked, checking inefficiency；And it can only be artificial on application scenarios And the outstanding problems such as auto inventory cannot be formed, the factors such as external environment difference different additionally, due to measurand apparatus for placing, Existing counting device of checking is caused to cannot achieve the problems such as checking.

Using laser scanning engine, using non-contacting information collection mode.User is overcome habitually in the past using contact Formula device or desktop apparatus damage the problem of application when carrying out number statistical to tablet, while also protecting device sheet The abrasion of body, because contact has abrasion condition in use.

Using laser scanning engine, overcomes some light source detections and check application the weakness for counting limitation, expand Big industry field, is improved using linear laser sensor and is fitted to application object size, thickness, color and placement position Ying Xing is equipped with efficient, the accurate number statistical that excellent algorithm realizes more industry fields, while using large screen display, Intelligent sound enters for, and realizes new counting identification method, improves the user experience counted thoroughly.

Mobility is flexible, and user can more easily, easily operate, and hand-holdable operation can also cooperate bracket Fixed operation.

Detailed description of the invention:

Fig. 1 is utility model device schematic illustration；In figure, 1 represents laser, and 2 represent light-gathering concave-surface mirror, and 3 represent Mechanical pendulum mirror, 4 represent bracket, and 5 represent photoelectric conversion unit, and 6 represent tested tablet, and 7 represent electric signal processing unit.

Fig. 2 is that device signal is connected with each other schematic diagram in embodiment.

Fig. 3 is two-stage amplifying circuit schematic diagram in embodiment；Due to apart from not in collected reflection signal in embodiment Together, reflected light intensity is different, is converted into the signal that just will form different amplitudes after electric signal, for the ease of subsequent processing, The utility model uses automatic gain control circuit.Automatic growth control is instigate amplifying circuit Gain Automaticly strong with signal The autocontrol method spent and adjusted, realizes the circuit abbreviation AGC ring of this function.AGC ring is close loop electronic circuit, is one Degeneration factor, it is segmented into gain controlled amplifying circuit and control voltage forming circuit two parts, gain controlled amplification electricity Road is located at positive amplification access, and gain changes with control voltage.There are two types of control modes by AGC: one is utilize increase AGC The mode of voltage reduces the mode of gain forward direction AGC, in the present invention, when equipment apart from measured object farther out the case where Under, return signal is smaller, needs to carry out waveform adjustment amplification by the way of forward gain.One is utilize reduction AGC voltage Mode reduce the mode of gain reversed AGC, it is downward apart from the closer situation of equipment in measured object, return signal intensity compared with Greatly, in order to make rear class convenient for processing, it is necessary to make waveform in reasonable range, at this time using backward gain control mode carry out wave Shape adjustment.The utility model two-stage amplifying circuit uses two-stage to be handled altogether, as shown in figure 3, the first order mainly uses Agc circuit carries out amplitude control, by photoelectric conversion unit, will reflect back into the optical signal come and is converted to electric signal, pass through simultaneously AGC, which adjusts to analyze convenient for rear class, to be amplified；The second level is amplified, and the function that related clutter filters out after realization automatic growth control is Subsequent signal processing is ready, namely analog-digital converter work is ready.

Fig. 4 is to enter the electric signal figure before two-stage amplifying circuit in embodiment；Abscissa represents the time, and ordinate represents electricity Pressure.

Fig. 5 be in embodiment electric signal through the amplified electric signal figure of level-one；Abscissa represents the time, and ordinate represents electricity Pressure.

Fig. 6 be in embodiment electric signal through the amplified electric signal figure of second level；Abscissa represents the time, and ordinate represents electricity Pressure.

Fig. 7 is parameter setting interface figure in embodiment.

Fig. 8 is that sectional view as the result is shown is counted in embodiment.

Fig. 9 is linear distance schematic diagram of the utility model device apart from testee in embodiment；Keep this equipment with The distance between measured object about 100mm or so.

Figure 10 is that measurand both ends need the schematic diagram without other objects when utility model device works in embodiment； In figure, both ends remain larger than the space foreign of 20mm.

Specific embodiment:

The present embodiment is using common paper bag as sweep object, and hand-held non-contact formula tablet checks counting device.

Contactless tablet checks counting device, comprising: laser 1, light-gathering concave-surface mirror 2, mechanical pendulum mirror 3, photoelectricity turn Change unit 5, electric signal processing unit 7, central processing unit, power supply, between photoelectric conversion unit and signal processing unit Signal amplification circuit, the input-output unit being connected respectively with central processing unit, display unit, data transmission unit, intelligence Energy voice reading unit, angular transducer.

The laser is LED laser pipe.The signal amplification circuit includes two-stage amplifying circuit, it may be assumed that first order amplification Circuit and second level amplifying circuit；First order circuit carries out amplitude control using agc circuit, and second level amplifying circuit carries out clutter It filters out, is ready for subsequent signal processing.

The laser that the laser issues reflects after the reflection of light-gathering concave-surface mirror, then through mechanical pendulum mirror, be finally irradiated to by Survey the side of tablet；Through being tested the offside reflection of tablet, part light is reflected through mechanical pendulum mirror, then is reflected through light-gathering concave-surface mirror Afterwards, into photoelectric conversion unit；Optical signal is converted to electric signal, Electric signal processing list after converting signal by photoelectric conversion unit Member checks counting according to the transonic feature realization in tablet interface；The central processing unit respectively with laser, mechanical pendulum Mirror, photoelectric conversion unit, electric signal processing unit are connected；The power supply is whole device power supply.

The central processing unit is to constitute the core of the utility model, is also core processor unit, uses meaning Core processor of the STM32F407IEH6 microprocessor that method semiconductor is produced as the utility model, is coordinating each unit just Often work, counting carry out systematic procedure control during checking, and as a result data operation verifies, receive the letter of peripheral circuit feedback Breath, such as key information, feedback information is as a result, control display unit shows relevant information；In addition, central processing unit is responsible for Coordinate the work of various peripheral modules, such as display portion, communication part etc..

The display unit, based on one block of 1.7 cun of OLED full-color screen liquid crystal, as the utility model information output window Mouthful, it realizes high-resolution, intelligent display, while supporting bilingual display, provides better man-machine interaction mode, cooperate with key Parameter setting, statistical result showed may be implemented, device-dependent message etc. helps to improve product practicability, in display data While achievable data voice broadcast, voice system introduces reference voice casting unit.

The input-output unit, there are four keys for setting on the utility model shell: wherein there are three function keys, confirmation Key, upper key, down key and a scanning key, while scanning key is also switch key, if equipment does not have within a certain period of time Movement, equipment can enter suspend mode, need to click scanning key could wake-up device, four key areas are and central processing Device unit is directly connected to, and is fed back to central processor unit by external key information, is passed through the data of central processor unit Data setting, the functions such as switching between function adjustment and various interfaces are completed in processing.

The data transmission unit is that wireless communication function is realized using WIFI module, mainly cooperation central processing list Member completes device network access, and information is transferred to the function of data center, realizes equipment with production management software interconnection etc..With The data that equipment needs can be uploaded to storage server by family, equipment can also be accessed to relevant management system, such as warehouse pipe Reason system, material management system etc. realize the Real-Time Sharing of data.

The power supply of the present embodiment uses lithium battery power supply, does linear voltage stabilization using voltage stabilizing chip XC6220A331MR-G, mentions It works for 3.3V power supply for whole system, display unit and voice unit all individually use voltage stabilizing chip XC6220A331MR-G Do linear voltage stabilization, avoid to central processing unit acquire signal formed interference, while each road power supply can independent open and close, It realizes power supply Precision management, uses the time after extending single charge, while reducing the problem of aging to core devices.And it is equipped with The lithium battery charging chip LTC4054-4.2 of Linear Tech carries out charging valve to 2000mA/h battery used in the present embodiment Reason is acquired management to battery capacity using the LTC2941-1 that Linear Tech provides.Improve the flexibility that this product uses.

The intelligent sound enters for unit, is with phonetic codec chip VS1003B and processing unit direct communication, together When connect with high performance loudspeaker, counting process broadcast actual number, even if user does not go to see display in use Screen also will appreciate that the quantity of checked application, improves and checks counting efficiency, while but also the application of device more It is convenient and efficient.The present embodiment stores voice data using storage chip W25Q128BV, by logical with central processing unit Also simultaneous display correlation checks enumeration data on a display screen while proving to be true after interrogation existing voice output, and broadcast voice.

The present embodiment uses angular transducer MPU6050 chip simultaneously, and the effect of angular transducer is that equipment is made to work In specified angular range, convenient for the distribution of scanning laser, is checked in counting process specifically, angular transducer can be passed through The angle for acquiring user's use device is done mutually correction with the information of collected laser scan unit and is corrected.Prevent using Person is in use because the hand-held or problem of putting, which causes to count, checks result inaccuracy etc..

The contactless tablet realized on the above device checks method of counting, comprises the following processes:

Step 1: central processing unit starts laser and issues point light source, and starting mechanical pendulum mirror is put within the scope of certain angle It is dynamic；

Step 2: point light source successively passes through the reflection of light-gathering concave-surface mirror, the reflection of mechanical pendulum mirror, and continuous swing forms threadiness and sweeps Area is retouched, is irradiated on the section and gap of tested tablet；

Step 3: fraction of laser light is reflected；

Step 4: reflected laser passes sequentially through the reflection of mechanical pendulum mirror, light-gathering concave-surface mirror collects optically focused, projects light In electric converting unit；

Step 5: photoelectric conversion unit will reflect back into the optical signal come and be converted into electric signal；After conversion

Step 5.1: electric signal is by by modulus conversion chip being converted into digital signal after repeatedly amplifying conditioning, then will count Word signal sends processing unit to；Since the spacing of tablet is different, thickness is different, height is different, being embodied on waveform will There is the variation of the design parameters such as various period frequencies, as shown in figure 4, waveform includes in data there is no unified rule The data of effect also contain interference data, next lesser spike of amplitude etc. in figure needs to disappear by software filtering Invalid interference waveform is removed, while needing to be adjusted valid data waveform；

Step 5.2: original waveform first has to by amplification, corresponding effective threshold value is set after amplification, mainly to waveform Amplitude be defined, judge effective waveform, eliminate invalid clutter, after this algorithm, as shown in figure 5, wave Shape is intended to rule, and boundary also tends to obviously, in waveform adjustment algorithm, mainly uses Fast Fourier Transform (FFT), the tune of amplitude Whole and restriction etc.；The condition for determining testee has been had been provided with after waveform adjustment, boundary condition is also comparable obvious at this time, The boundary after testee arrangement can be judged by amplitude com parison, and the quantity of whole tested tablet can be calculated with this；

Step 5.3: carrying out number amplification and adjustment again, mainly eliminate the spike in effective waveform, protrusion etc. is thin Micro- interference waveform, makes waveform be intended to reference waveform, is convenient for data processing, a series of waveform such as Fig. 6 after transformation It is shown.

Step 6: transformed final waveform by calculate wave crest quantity you can learn that checked tablet quantity, every kind Tablet will be different, and in data collected, complex surface can check the number of tablet by calculating gap Amount, the subtle quantity that can directly check tablet in simple surfaces gap.

The utility model is hand-held non-contact formula tablet checking device, is embodied as a kind of hand-held tablet counting Device, major function are to realize not contact between device and measurand to check counting.It can be hand-held checking device, it can also Outside support is cooperated to realize that equipment is checked in fixation according to operating condition.According to the adjustable laser scanning list of different tablet measurands Member realizes that more application scenarios count.The tablet that 0.2mm to 50mm may be implemented checks counting, the application code that single counts Folded height or length are in 2000mm or more, as shown in fig. 7, different operating parameter can be set according to different operating conditions.

According to design, laser oscillating frequency is per second substantially swings 50 times, i.e. it is complete that 20ms will complete an application Portion's scanning, processing unit, which calculates, once substantially needs 30ms, that is, the use data of processor compartment, carries out operation.Repeatedly After counting, after various parameters meet count off requirement, accordingly result is obtained, mode is as shown in figure 8, respectively single is surveyed as the result is shown Measure quantity, accumulated quantity and pendulous frequency information etc..

Utility model device has been further provided with three keys, respectively A key B key and C key, for completing equipment correlation function The setting of energy, the utility model prevailing operating state, which is divided into, checks count status, and state is arranged in function.

In the case where checking count status, A key is used to do stored count and clicks A key after single counts, and single is counted and is tied Fruit is accumulated in stored count, while storing display accordingly result.C key is used to reset various count results, clicks C key list Secondary count results, stored count is as a result, counts are all reset, while storing display accordingly result.Enter within long-pressing middle key 1 second State is arranged in function.

Long-pressing B button apparatus can entered function state is set, under function setting state, A key as upturning key, C key as Downturning key, B alternatively acknowledgement key, can carry out selection setting to device by three keys.

The course of work of laser scanning is set forth in concrete scheme, laser starts after equipment starting, in equipment Measurement window after can launch a red laser rays, equipment at this time is in working condition, need by artificial or Person's other forms trigger equipment and start to work.Triggering form is to check button in the present invention, at the handle of equipment, is made The laser rays that equipment issues is aligned with neat tablet section by user, and laser rays is enable completely to scan tested mesh Mark presses measurement button devices at this time and initially enters measurement, and measurement needs about one second time.

Concrete operations mode is the scanning key starting present apparatus clicked at the handle of utility model device, wait be switched on After picture, it can see a red laser rays, the application of counting to be checked neatly is well placed, by laser rays It gets on the side plane arranged in measurand, it is ensured that laser rays all covers the edge of whole measurands, and tested The space foreign that object both ends need to remain larger than 20mm keeps the distance between this equipment and measured object as shown in Figure 10 About 100mm or so presses scanning key, is greater than 1 second, and device is checked counting and completed, and display unit shows accordingly result, while intelligence Voice broadcast accordingly result.If laser line scanning malposition, device can be waited always, and all laser rays all do not have in 6 seconds There is scanning as requested to influence application, device can issue continuous two sound " drop ", and then device reports an error, and shows corresponding wrong feelings Condition.

Claims (6)

1. contactless tablet checks counting device characterized by comprising laser, light-gathering concave-surface mirror, mechanical pendulum mirror, Photoelectric conversion unit, electric signal processing unit, central processing unit, power supply；The laser that the laser issues is through light-gathering concave-surface It after mirror reflection, then reflects through mechanical pendulum mirror, is finally irradiated to the side of tested tablet；Through being tested the offside reflection of tablet, Part light is reflected through mechanical pendulum mirror, then after the reflection of light-gathering concave-surface mirror, into photoelectric conversion unit；Photoelectric conversion unit is by signal Optical signal is converted to electric signal after conversion, electric signal processing unit checks meter according to the transonic feature realization in tablet interface Number；The central processing unit is connected with laser, mechanical pendulum mirror, photoelectric conversion unit, electric signal processing unit respectively；It is described Power supply is whole device power supply.

2. contactless tablet checks counting device according to claim 1, which is characterized in that further include: it is located at photoelectricity Signal amplification circuit between converting unit and signal processing unit.

3. contactless tablet checks counting device according to claim 2, which is characterized in that the signal amplification circuit Including two-stage amplifying circuit, it may be assumed that first order amplifying circuit and second level amplifying circuit；First order circuit is carried out using agc circuit Amplitude control, second level amplifying circuit carry out clutter and filter out, be ready for subsequent signal processing.

4. -3 any one contactless tablets check counting device according to claim 1, which is characterized in that described to swash Light device is LED laser pipe.

5. -3 any one contactless tablets check counting device according to claim 1, which is characterized in that also wrap It includes: input-output unit, display unit, the data transmission unit being connected respectively with central processing unit.

6. contactless tablet checks counting device according to claim 5, which is characterized in that further include: respectively in The connected intelligent sound of Central Processing Unit enters for unit, angular transducer.