CN104035136A - Encasement bar-lacking microwave detection device for goods with tinfoil packages and detection method - Google Patents
Encasement bar-lacking microwave detection device for goods with tinfoil packages and detection method Download PDFInfo
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- CN104035136A CN104035136A CN201410259122.2A CN201410259122A CN104035136A CN 104035136 A CN104035136 A CN 104035136A CN 201410259122 A CN201410259122 A CN 201410259122A CN 104035136 A CN104035136 A CN 104035136A
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Abstract
The invention provides an encasement bar-lacking microwave detection device for goods with tinfoil packages. The encasement bar-lacking microwave detection device comprises at least two sensors, a signal processing module, a master control module, an alarm module and a removal device. The sensors include a microwave radar and a bar code scanner, the microwave radar is connected with the input end of the bar code scanner, the bar code scanner is connected with the connecting input end of the master control module, the transmitting end of the signal processing module is connected with the input end of the master control module, and the output end of the master control module is respectively connected with the alarm module and the removal device. The encasement bar-lacking microwave detection device for the goods with the tinfoil packages can be arranged on a running production line and is high in accuracy, high in efficiency, high in performance-price ratio and safe.
Description
Technical field
The present invention relates to a kind of microwave detecting device, particularly a kind of vanning of the article with tinfoil paper material lacks bar microwave detecting device and detection method.
Background technology
On the automatic production line of product, packing detect generally there is high workload amount, the feature such as high duplication, high intelligent and high measurement accuracy, obviously the method for manual detection has been not suitable with current production situation, but also there are some shortcomings in production line mechanization, such as packaging products in boxes, fill askew, package failure etc., this all can affect producer's reputation and bring other adverse effects such as loss of income.Thereby in production line, quality how automatic, Intelligent Measurement packaging products in boxes obtains the attention of many manufacturers.The Weighing type that has in the normal employing of the current detection for fragrant cigarette bar box-missing phenomenon, the Weighing type detection device of shortage in tobacco box for example proposing in disclosed utility application 201320100380.7 on August 21st, 2013, although substantially met the function that scarce bar detects, but this device, along with service time is elongated, there will be the problem of accuracy of detection decline.What another was generally adopted is exactly radio detection mode, for example in disclosed utility application 200520071266.1 on July 19th, 2006, with X ray, lacking bar detects, although degree of accuracy is greatly improved compared with weight method, but there is radiation hazard.In invention disclosed patented claim 200410022718.7 on Dec 7 in 2005, applied Microwave Detecting Technology, this improves the drawback of above-mentioned two kinds of scarce bar detection modes largely, but the restriction of this invention based on the software and hardware of signal processing at that time, verification and measurement ratio is not fine, and signal processing haves much room for improvement.
To sum up, the scarce bar detection system of existing packing case has the following disadvantages: the detection system of (1) Weighing type is along with service time is elongated, and accuracy of detection declines to some extent; (2) adopt the monitoring system of X ray to there is radiation hazard; (3) adopt the microwave radar of dual-mode antenna separation and the cost of imaging analysis method detection relatively high, and efficiency is limited.
Summary of the invention:
The object of this patent is exactly in order to provide the vanning of the article with tinfoil paper material of a kind of high precision, high-level efficiency, high performance-price ratio and safety to lack bar microwave detecting device and detection method.
To achieve these goals, this patent adopts following technical scheme:
Article vanning with tinfoil paper material lacks a bar microwave detecting device, comprises sensor, signal processing module, main control module, alarm module and device for eliminating; Described sensor is at least two-way sensor, comprise microwave radar He Yi road, a road barcode scanner, microwave radar is connected with signal processing module input end, barcode scanner is connected input end and connects with main control module, signal processing module transmitting terminal is connected with main control module input end, and main control module output terminal is connected with device for eliminating with alarm module respectively.
Article vanning with tinfoil paper material lacks a bar microwave detection method, comprises the following steps:
Step 1, installs microwave detecting device, is specially: microwave radar is fixed on streamline side, over against examined packing case; Barcode scanner is fixed on streamline side and is positioned at a side of microwave radar, over against the bar code on examined packing case;
Step 2, the threshold value of initialization system;
Step 3, sweep object, acquisition parameter, comprises the echoed signal that on the packing case that barcode scanner gathers, bar code information, microwave radar scanning are accepted;
Step 4, data processing, judge packing case whether case qualified.
Compared with prior art, the invention has the advantages that: (1) utilizes the characteristic of C-band, take low emissive power design, when ensureing accuracy of detection, can safeguard work personnel avoid Health cost again; (2) employing transceiver microwave radar and the dsp chip of take realize as basic time frequency analysis signal processing method the detection that cigarette packets vanning lacks bar, have the features such as high precision, high-level efficiency, low cost.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram provided by the invention;
Fig. 2 is the systematic schematic diagram of signal processing module provided by the invention;
Fig. 3 is work schematic diagram provided by the invention;
Fig. 4 is the echoed signal schematic diagram that microwave radar provided by the invention gathers;
Fig. 5 is the first embodiment provided by the invention;
Fig. 6 is the second embodiment provided by the invention;
Fig. 7 is the third embodiment provided by the invention;
Fig. 8 is the 4th kind of embodiment provided by the invention;
Fig. 9 is the process flow diagram that lacks bar microwave detection method with the article vanning of tinfoil paper packing provided by the invention.
Embodiment
Below in conjunction with Figure of description, specifically describe the article vanning with tinfoil paper packing provided by the present invention and lack bar microwave detecting device and detection method.
In conjunction with Fig. 1, a kind of vanning of the article with tinfoil paper material lacks bar microwave detecting device, comprises sensor, signal processing module, main control module, alarm module and device for eliminating; Described sensor is at least two-way sensor, comprise road microwave radar 3 He Yi road barcode scanners 5, microwave radar 3 is connected with signal processing module input end, barcode scanner 5 is connected input end and connects with main control module, signal processing module transmitting terminal is connected with main control module input end, and main control module output terminal is connected with device for eliminating with alarm module respectively.
In conjunction with Fig. 2, signal processing module comprises voltage follower 6, amplifilter 7, adc circuit unit 8, core signal processing unit 9 and system power supply 10; Voltage follower 6 input ends are connected with microwave radar 3, voltage follower 6 transmitting terminals are connected with amplifilter 7 input ends, amplifilter 7 output terminals are connected with the input end of adc circuit unit 8, adc circuit unit 8 output terminals are connected with core signal treatment circuit unit 9 input ends, and core signal treatment circuit unit 9 output terminals are connected with main control module; System power supply 10 gives signal processing module each unit power supply.
The communication that microwave radar 3 gathers is to the voltage follower 6 in signal processing module, the signal that described microwave radar 3 front-end information of voltage follower 6 isolation are brought disturbs, signal after processing is transferred to amplifilter 7 and carries out signal amplification and filtering clutter, signal after processing is transferred to adc circuit unit 8 and carries out analog to digital conversion, digital data transmission after conversion is carried out to data processing to core signal processing unit 9, and the result after processing is transferred to main control module; Barcode scanner 5 transfers to main control module by scanning result; Whether master control module judges is sent alerting signal to alarm module and is rejected signal to device for eliminating.
Microwave radar 3 is the shared microwave radar of antenna receiving-sending, and its front end is operated in C-band and emissive power is less than 10mW, and beam angle is 10 °～20 °.
Microwave radar 3 adopts shielding line to be connected with barcode scanner 5 and subsequent treatment module.
For adapting to signal processing circuit described in the fast throughput of described core signal treatment circuit, added described external RAM 11, external RAM 11 has played the effect of temporary cache deal with data, to improve the arithmetic speed of system.
Take dsp chip TMS320F2812 and realize the information processing of system as platform in core signal treatment circuit unit, it can complete quickly and accurately product signal and process and analytic function, thereby realize the function that detects in real time vanning situation, simultaneously it can also carry out real-time Communication for Power with described master control PC, thereby realizes product information record and to there being the functions such as warning of the underproof product of vanning.
For the consideration that can normally work on described signal processing circuit modules with prevent current over pulse when powering up and affect converter performance, and the described system power supply with soft starting circuit has been selected in the consideration of the factor such as heat dissipation characteristics.
Main control module is PC.
For ensureing the handling property of described signal processing module, signal processing module has been carried out to anti-interference process, comprise hardware anti-interference and Software Anti-interference.Hardware anti-interference comprises that power supply is anti-interference, digital signal processor is anti-interference and PCB circuit board is anti-interference.Particularly, power supply is anti-interference to be comprised: (1) adopts direct current supply, configures high-quality mu balanced circuit; (2) decoupling capacitor in parallel between the VDD-to-VSS of each PCB circuit board porch; (3) use power isolation module that the circuit module of difference in functionality in circuit is carried out to isolated from power.Digital signal processor is anti-interference to be comprised: (1) places decoupling capacitor between the power supply of chip and ground pin, can reduce system noise, bypasses the high frequency noise of device; (2), in the situation that meeting system requirements, reduce the clock frequency of processor as far as possible; (3) between I/O mouth and noise source, adopt optocoupler to carry out electrical isolation.PCB circuit board is anti-interference to be comprised: (1) is according to the size of PCB circuit board electric current, the width of overstriking power lead as far as possible, make the trend of power lead, ground wire consistent with data transfer direction, contribute to like this to strengthen the noise resisting ability of system, in system circuit board, power lead can adopt the measure of widening, and reduces loop resitance as far as possible; (2) what in native system design, adopt is doubling plate, and ground wire, by single-point grounding, first separates in analog with digitally, is finally compiled in one point earth, can place in analog and digitally a magnetic bead or 0 Ω resistance between line; (3) electronic devices and components and wire rational deployment, make mutual signal coupling minimum, according to the position of each functional module of flow arrangement of circuit, make layout be convenient to signal transmission, and the direction that signal lead is consistent as far as possible, between the VDD-to-VSS of each integrated circuit, to add a decoupling capacitor simultaneously; (4) the good electronic devices and components of selectivity; (5) crystal oscillator of clock oscillator and the line of processor are short and thick as far as possible, and possible in the situation that, property-line surrounds oscillatory circuit, and makes shell of crystal oscillator ground connection, between power supply and ground pin, add decoupling capacitor.The measure of taking as for Software Anti-interference has software trap, Soft-Watchdog Technology for Each technology and instruction redundancy etc.
In conjunction with Fig. 7, a kind of vanning of the article with tinfoil paper material lacks bar microwave detection method, comprises the following steps:
Step 1, installs microwave detecting device, is specially: microwave radar is fixed on streamline side, and apart between packing case 40～60cm, and each road microwave radar is over against the every one deck product in examined packing case; Barcode scanner (4) is fixed on streamline side and is positioned at a side of microwave radar (3), over against the bar code of product in examined packing case.
Step 2, the thresholding coefficient of initialization system.Take packaged cigarette carton as example, packing case on streamline starts to enter examined scope, in packing due to cigarette carton, contain tinfoil paper, electromagnetic wave also starts to be reflected, start to receive echo, along with examined scope becomes large, it is large that reflective surface area becomes, it is large that echo voltage also becomes gradually, because gapped between plume and plume, electromagnetic wave can not be reflected in this interstice coverage, so for single plume, when its center section being detected, echo voltage is maximum, the words that backward detect again, because the electromagnetic wave having can not be reflected, so echo voltage diminishes gradually, as shown in Figure 4, transverse axis is time shaft, the longitudinal axis is magnitude of voltage.To one deck cigarette carton of normally putting, every position corresponding to cigarette carton, there is individual crest, and crest is in the centre of each every Cigarette pack position, the spacing of crest, the spacing of trough is to change in a very little scope, again because usually there will be a little trough and two crests in large crest, therefore needing to adopt thresholding judgement+square wave to sentence method for distinguishing differentiates plume display case, because crest, the position that trough occurs only can change in a very little scope, so can be respectively to crest, near some trough is got average, be organized into square wave, concrete grammar is:
Step 2.1, allows N, N ∈ (50,100), and the correct packing case of assembling box is successively by streamline, and each group packing case of the correct discharge of microwave radar (3) scanning, gathers echoed signal;
Step 2.2, the echoed signal medium wave peak of every group of packing case that signal processing module receives microwave radar (3) front end according to square wave method of discrimination, near point trough are got average, and arrangement is square wave;
Step 2.3, signal processing module records the maximum peak voltage value in every square wave figure
m is the index value m ∈ N of the correct packing case of vanning, and n is the index value of the product number of plies in the correct packing case of vanning;
Step 2.4, design factor α
(m, n), concrete grammar is:
Step 2.4.1, calculate the magnitude of voltage that in every square wave figure, last crest obtains and deduct the resulting numerical value of magnitude of voltage that its previous adjacent trough obtains, the magnitude of voltage that all the other crests obtain deducts the resulting numerical value of magnitude of voltage that a rear adjacent trough obtains;
Step 2.4.2, by above-mentioned difference divided by
the all business that obtain do the factor alpha that mean value obtains Zhang Fangbo figure
(m, n);
Step 2.5, calculates thresholding coefficient
50 group of 5 * 5 packing case of take is example, i.e. N=50, and n=5,
Step 3, sweep object, acquisition parameter, comprises the echoed signal that on the packing case that barcode scanner (4) gathers, bar code information, microwave radar (3) scanning are accepted.
Step 4, data processing, it is qualified whether the detected packing case of judgement cases.Concrete grammar is:
Step 4.1, records the bar code information of the detected packing case that barcode scanner (4) gathers;
Step 4.2, microwave radar (3) scans detected packing case, respectively near the point its echoed signal medium wave peak, trough is got to average, and be organized into square wave according to square wave method of discrimination;
Step 4.3, sets the threshold value of every square wave figure
wherein p is the index value of detected packing case, and q is the index value of the product number of plies in detected packing case,
it is the maximum peak voltage value in the square wave figure of q layer product in p tested packing case;
Step 4.4, by the magnitude of voltage that in every square wave figure, last crest obtains deduct the resulting numerical value of magnitude of voltage that its previous adjacent trough obtains and this Zhang Fangbo figure threshold value Delt
(p, q)relatively, the magnitude of voltage that all the other crests obtain deducts the resulting numerical value of magnitude of voltage that a rear adjacent trough obtains and the threshold value Delt of setting
(p, q)relatively, according to thresholding determination methods, if every resulting all differences of square wave figure are all greater than threshold value Delt
(p, q), judge in tested packing case this layer of packaging products in boxes qualified; If have a difference to be less than threshold value Delt in every resulting all differences of square wave figure
(p, q), judge in tested packing case this layer of packaging products in boxes defective;
Step 4.5, by each group packing case q layer product all detect complete, qualified if q layer product all put, master control module controls system carry out next group packing case detection; If there have one deck to put in q layer product to be defective, judge packing case vanning defective, master control module controls alarm module sounds the alarm, device for eliminating is started working, to occur lacking the packing case rejecting of bar, if Fig. 7 is when being output as 1, alarm is not sounded, when being output as 0, alarm is sounded;
Step 4.6, the scanning result generating report forms of barcode scanner, judges the underproof position of packing case.
Embodiment mono-
In conjunction with Fig. 3, it is example that 5 * 5 fragrant cigarette bar box-missings of casing forms of take detect.Sensor is Wei Liu road sensor now, and wherein 5 tunnels are microwave radar, and 1 tunnel is barcode scanner.According to packing case casing size, microwave radar is fixed on to streamline side over against the position of examined packing case, and apart from packing case 45cm, each road microwave radar scanning one deck cigarette carton.
First gather the threshold value of the information computing system of 5 groups of packing cases.
Then start to detect whether Proper Packing of packing case: the echoed signal that each road microwave radar collects every layer of cigarette carton of one group of corresponding packing case obtains an oscillogram through the processing of message processing module, as shown in Figure 4, because being puts with 5 * 5 vanning forms, so the oscillogram of every layer of cigarette carton has 5 crests, wherein transverse axis represents the time, longitudinal axis representative voltage value.Barcode scanner is directly inputted to main control module by the scanning result of self, waits for subsequent operation.Utilize square wave diagnostic method, near 100 points of each crest place of getting respectively an oscillogram calculate its average, get near 75 some counter averages of each trough place, obtain oscillogram, as shown in Figure 5, transverse axis is time shaft, the longitudinal axis is magnitude of voltage, and the magnitude of voltage obtaining is denoted as respectively V
a, V
b, V
c, V
d, V
e, V
f, V
g, V
h, V
i, V wherein
a, V
c, V
e, V
gand V
imagnitude of voltage higher, be to differentiate and process the magnitude of voltage obtaining through square waves by 5 crests, and judge successively V
a-V
b, V
c-V
d, V
e-V
f, V
g-V
h, V
i-V
hwith the size of threshold value Delt, and be all greater than the threshold value of setting, this layer of product placement is qualified.In like manner the remaining product of four layers is carried out to operation result of measurement, when the difference obtaining is all greater than threshold value Delt, illustrate that the product placement in this group packing case is qualified, control module is controlled whole system next group packing case is measured.
Embodiment bis-
In conjunction with Fig. 3, it is example that 5 * 5 fragrant cigarette bar box-missings of casing forms of take detect.Sensor is Wei Liu road sensor now, and wherein 5 tunnels are microwave radar, and 1 tunnel is barcode scanner.According to packing case casing size, microwave radar is fixed on to streamline side over against the position of examined packing case, and apart from packing case 45cm.
First gather the threshold value of the information computing system of 5 groups of packing cases.
Then start to detect whether Proper Packing of packing case: the echoed signal that each road microwave radar collects every layer of cigarette carton of one group of corresponding packing case obtains an oscillogram through the processing of message processing module, as shown in Figure 4, because being puts with 5 * 5 vanning forms, so the oscillogram of every layer of cigarette carton has 5 crests, wherein transverse axis represents the time, longitudinal axis representative voltage value.Barcode scanner is directly inputted to main control module by the scanning result of self, waits for subsequent operation.Utilize square wave diagnostic method, near 100 points of each crest place of getting respectively an oscillogram calculate its average, get near 75 points of each trough place and calculate its average, obtain oscillogram.It is qualified through measurement ground floor cigarette carton, to put, and as shown in Figure 6, the magnitude of voltage obtaining is denoted as respectively V to the oscillogram that microwave radar scanning second layer cigarette carton obtains
a2, V
b2, V
c2, V
d2, V
e2, V
f2, V
g2, V
h2, V
i2, V wherein
a2, V
c2, V
e2, V
g2and V
i2magnitude of voltage higher, be to differentiate and process the magnitude of voltage obtaining through square waves by 5 crests, and judge successively V
a2-V
b2, V
c2-V
d2, V
e2-V
f2, V
g2-V
h2, V
i2-V
h2with the size of threshold value Delt, wherein V
e2-V
f2be less than threshold value Delt, product placement is defective, and control module is controlled alarm module and reported to the police, and device for eliminating is started working, and underproof packing case is rejected.
The scanning result generating report forms of barcode scanner, judges the cigarette carton of the underproof centre for the second layer of product placement in packing case, and relevant staff processes.
Embodiment tri-
In conjunction with Fig. 3, it is example that 5 * 5 fragrant cigarette bar box-missings of casing forms of take detect.Sensor is Wei Liu road sensor now, and wherein 5 tunnels are microwave radar, and 1 tunnel is barcode scanner.According to packing case casing size, microwave radar is fixed on to streamline side over against the position of examined packing case, and apart from packing case 45cm.
First gather the threshold value of the information computing system of 5 groups of packing cases.
Then start to detect whether Proper Packing of packing case: the echoed signal that each road microwave radar collects every layer of cigarette carton of one group of corresponding packing case obtains an oscillogram through the processing of message processing module, as shown in Figure 4, because being puts with 5 * 5 vanning forms, so the oscillogram of every layer of cigarette carton has 5 crests, wherein transverse axis represents the time, longitudinal axis representative voltage value.Barcode scanner is directly inputted to main control module by the scanning result of self, waits for subsequent operation.Utilize square wave diagnostic method, near 100 points of each crest place of getting respectively an oscillogram calculate its average, get near 75 some counter averages of each trough place, obtain oscillogram.It is qualified through measurement ground floor cigarette carton, to put, and as shown in Figure 7, the magnitude of voltage obtaining is denoted as respectively V to the 3rd layer of oscillogram that cigarette carton obtains of microwave radar scanning
a3, V
b3, V
c3, V
d3, V
e3, V
f3, V
g3, V
h3, V
i3, V
a3, V
c3, V
e3, V
g3and V
i3to differentiate and process the magnitude of voltage obtaining, wherein V through square wave by 5 crests
g3-V
h3for negative value, must be less than threshold value, can judge it is underproof arrangement, control module is controlled alarm module and is reported to the police, and device for eliminating is started working, and underproof packing case is proposed.
The scanning result generating report forms of barcode scanner, breaks that product placement in packing case underproof be the cigarette carton of the 4th of the 3rd layer, and relevant staff processes.
Embodiment tetra-
In conjunction with Fig. 3, it is example that 5 * 5 fragrant cigarette bar box-missings of casing forms of take detect.Sensor is Wei Liu road sensor now, and wherein 5 tunnels are microwave radar, and 1 tunnel is barcode scanner.According to packing case casing size, microwave radar is fixed on to streamline side over against the position of examined packing case, and apart from packing case 45cm.
First gather the threshold value of the information computing system of 5 groups of packing cases.
Then start to detect whether Proper Packing of packing case: the echoed signal that each road microwave radar collects every layer of cigarette carton of one group of corresponding packing case obtains an oscillogram through the processing of message processing module, as shown in Figure 4, because being puts with 5 * 5 vanning forms, so the oscillogram of every layer of cigarette carton has 5 crests, wherein transverse axis represents the time, longitudinal axis representative voltage value.Barcode scanner is directly inputted to main control module by the scanning result of self, waits for subsequent operation.Utilize square wave diagnostic method, near 100 points of each crest place of getting respectively an oscillogram calculate its average, get near 75 some counter averages of each trough place, obtain oscillogram.It is qualified through measurement ground floor cigarette carton, to put, the 3rd layer of oscillogram that cigarette carton obtains of microwave radar scanning as shown in Figure 8, in the echoed signal of measured this layer product, only have four crests, judge, this layer only has four products, occurs lacking the situation of bar, can judge it is underproof arrangement, control module is controlled alarm module and is reported to the police, and device for eliminating is started working, and underproof packing case is proposed.
The scanning result generating report forms of barcode scanner, breaks that product placement in packing case underproof be the cigarette carton of the 4th of the 3rd layer, and relevant staff processes.
Claims (10)
1. the article vanning with tinfoil paper material lacks a bar microwave detecting device, it is characterized in that, comprises sensor, signal processing module, main control module, alarm module and device for eliminating; Described sensor is at least two-way sensor, comprise road microwave radar (3) He Yi road barcode scanner (5), microwave radar (3) is connected with signal processing module input end, barcode scanner (5) is connected input end and connects with main control module, signal processing module transmitting terminal is connected with main control module input end, and main control module output terminal is connected with device for eliminating with alarm module respectively.
2. the vanning of the article with tinfoil paper material according to claim 1 lacks bar microwave detecting device, it is characterized in that, signal processing module comprises voltage follower (6), amplifilter (7), adc circuit unit (8), core signal processing unit (9) and system power supply (10); Voltage follower (6) input end is connected with microwave radar (3), voltage follower (6) transmitting terminal is connected with amplifilter (7) input end, amplifilter (7) output terminal is connected with the input end of adc circuit unit (8), adc circuit unit (8) output terminal is connected with core signal treatment circuit unit (9) input end, and core signal treatment circuit unit (9) output terminal is connected with main control module; System power supply (10) gives signal processing module each unit power supply.
3. the vanning of the article with tinfoil paper material according to claim 1 and 2 lacks bar microwave detecting device, it is characterized in that, the communication that microwave radar (3) gathers is to the voltage follower in signal processing module (6), voltage follower (6) is isolated and disturb to be processed the signal obtaining and be transferred to amplifilter (7) and carry out signal amplification and filtering, signal after processing is transferred to adc circuit unit (8) and carries out analog to digital conversion, digital data transmission after conversion is carried out to data processing to core signal processing unit (9), and the result after processing is transferred to main control module; Barcode scanner (5) transfers to main control module by scanning result; Whether master control module judges is sent alerting signal to alarm module and is rejected signal to device for eliminating.
4. the vanning of the article with tinfoil paper material according to claim 2 lacks bar microwave detecting device, it is characterized in that, microwave radar (3) is the shared microwave radar of antenna receiving-sending, and its front end is operated in C-band and emissive power is less than 10mW, and beam angle is 10 °～20 °; External RAM (11) is set in signal processing module.
5. article with tinfoil paper material according to claim 2 vanning lacks bar microwave detecting device, it is characterized in that, take dsp chip TMS320F2812 and realize the information processing of system as platform in core signal treatment circuit unit.
6. the vanning of the article with tinfoil paper material according to claim 2 lacks bar microwave detecting device, it is characterized in that, system power supply is the power supply with soft starting circuit.
7. the vanning of the article with tinfoil paper material according to claim 2 lacks bar microwave detecting device, it is characterized in that, signal processing module is provided with anti-interference process device.
8. the article vanning with tinfoil paper material lacks a bar microwave detection method, it is characterized in that, comprises the following steps:
Step 1, installs microwave detecting device, is specially: microwave radar is fixed on streamline side, and each road microwave radar is over against the every one deck product in examined packing case; Barcode scanner (4) is fixed on streamline side and is positioned at a side of microwave radar (3), over against the bar code of product in examined packing case;
Step 2, the thresholding coefficient of initialization system;
Step 3, sweep object, acquisition parameter, comprises the echoed signal that on the packing case that barcode scanner (4) gathers, bar code information, microwave radar (3) scanning are accepted;
Step 4, data processing, it is qualified whether the detected packing case of judgement cases.
9. the vanning of the article with tinfoil paper material according to claim 8 lacks bar microwave detection method, it is characterized in that, the computing method of the thresholding coefficient of step 2 are:
Step 2.1, allows the correct packing case of N assembling box pass through successively streamline, N ∈ (50,100), each group packing case of the correct discharge of microwave radar (3) scanning, collection echoed signal;
Step 2.2, the echoed signal medium wave peak of every layer of product of every group of packing case that signal processing module receives microwave radar (3) front end according to square wave method of discrimination, near point trough are got average, and arrangement is square wave;
Step 2.3, signal processing module records the maximum peak voltage value in the square wave figure of every layer of product of each packing case
m is the index value m ∈ N of the correct packing case of vanning, and n is the index value of the product number of plies in the correct packing case of vanning;
Step 2.4, design factor α
(m, n), concrete grammar is:
Step 2.4.1, calculate the magnitude of voltage that in every square wave figure, last crest obtains and deduct the resulting numerical value of magnitude of voltage that its previous adjacent trough obtains, the magnitude of voltage that all the other crests obtain deducts the resulting numerical value of magnitude of voltage that a rear adjacent trough obtains;
Step 2.4.2, by above-mentioned difference divided by
the all business that obtain do the factor alpha that mean value obtains Zhang Fangbo figure
(m, n);
Step 2.5, calculates thresholding coefficient
10. article with tinfoil paper material according to claim 8 vanning lacks bar microwave detection method, it is characterized in that, the detected packing case of the judgement qualified concrete grammar of whether casing is:
Step 4.1, records the bar code information of the detected packing case that barcode scanner (4) gathers;
Step 4.2, gets average near the point echoed signal medium wave peak of every layer of product of every group of tested packing case, trough respectively according to square wave method of discrimination, and is organized into square wave;
Step 4.3, sets the threshold value of every square wave figure
wherein
it is the maximum peak voltage value in the square wave figure of q layer product in p tested packing case;
Step 4.4, by the magnitude of voltage that in every square wave figure, last crest obtains deduct the resulting numerical value of magnitude of voltage that its previous adjacent trough obtains and this Zhang Fangbo figure threshold value Delt
(p, q)relatively, the magnitude of voltage that all the other crests obtain deducts the resulting numerical value of magnitude of voltage that a rear adjacent trough obtains and the threshold value Delt of setting
(p, q)relatively, according to thresholding determination methods, if every resulting all differences of square wave figure are all greater than threshold value Delt
(p, q), judge in tested packing case this layer of packaging products in boxes qualified; If have a difference to be less than threshold value Delt in every resulting all differences of square wave figure
(p, q), judge in tested packing case this layer of packaging products in boxes defective;
Step 4.5, by each group packing case q layer product all detect complete, qualified if q layer product all put, master control module controls system carry out next group packing case detection; If there have one deck to put in q layer product to be defective, judge packing case vanning defective, master control module controls alarm module sounds the alarm, and device for eliminating is started working, and will occur lacking the packing case rejecting of bar;
Step 4.6, the scanning result generating report forms of barcode scanner, judges the underproof position of packing case.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259122.2A CN104035136A (en) | 2014-06-11 | 2014-06-11 | Encasement bar-lacking microwave detection device for goods with tinfoil packages and detection method |
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| CN201410259122.2A CN104035136A (en) | 2014-06-11 | 2014-06-11 | Encasement bar-lacking microwave detection device for goods with tinfoil packages and detection method |
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| CN108538758A (en) * | 2018-03-31 | 2018-09-14 | 格润智能光伏南通有限公司 | A kind of online corrugated board corner protector automatic identifying method |
| CN113611006A (en) * | 2021-08-12 | 2021-11-05 | 珠海格力电器股份有限公司 | Product quality detection method and device, storage medium and electronic equipment |
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Application publication date: 20140910 |