CN206638346U - Automatic vending machine photoelectric detective circuit - Google Patents
Automatic vending machine photoelectric detective circuit Download PDFInfo
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- CN206638346U CN206638346U CN201720397652.2U CN201720397652U CN206638346U CN 206638346 U CN206638346 U CN 206638346U CN 201720397652 U CN201720397652 U CN 201720397652U CN 206638346 U CN206638346 U CN 206638346U
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Abstract
The utility model provides a kind of automatic vending machine photoelectric detective circuit, including photoelectric switching circuit, second order bandwidth-limited circuit, peak detection circuit and the single-chip microcomputer being sequentially connected electrically；The photoelectric switching circuit includes infrared transmitting tube and infrared receiving tube；The input of infrared transmitting tube connects the general purpose outputs of single-chip microcomputer by metal-oxide-semiconductor；Second order bandwidth-limited circuit includes comparator, resistance two, electric capacity three, resistance three and electric capacity four；The input of No. 2 pins connection electric capacity one of the infrared receiving tube, the input of the output end connection comparator of the electric capacity one；The output end of the output end of comparator, electric capacity three and resistance three is connected with the input of peak detection circuit；The output end connection single-chip microcomputer of peak detection circuit.Detection circuit provided by the utility model, reliability is high, and the stability and success rate of shipment detection are high, and environmental suitability is strong, strong antijamming capability.
Description
Technical field
It the utility model is related to photoelectric detective circuit technical field, and in particular to a kind of automatic vending machine Photoelectric Detection electricity
Road.
Background technology
Automatic vending machine is a kind of brand-new retailing form, and it is not limited by time, place, can save manpower,
Convenient transaction, the commodity that automatic vending machine can be sold are very extensive, and snacks, beverage, fruit and vegetable etc. can be in automatic vendings
Sold on machine, it is referred to as the micro supermarket of 24 HOUR ACCESS.Bought in order to ensure consumer on automatic vending machine
Commodity can accurate shipment, need to make Cargo Inspection brake on automatic vending machine, the shipment detection mode of main flow is to adopt at present
Realized with Photoelectric Detection, but the photoelectric detective circuit of main flow is all much to use Direct-detection Optical electricity crossover connection pin at present
The mode of level realizes that, although this mode is simple, there is also unstable, the weakness such as poor anti jamming capability.
CN201410604554.2 discloses a kind of infrared ray electro-detection circuit, including infrared light emitting diode, photosensitive
Triode, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the first NPN
Type triode, the second NPN type triode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, computing are put
Big device, adjustable resistance, LM567 chips and dc source, first resistor, second resistance, the first NPN type triode, the second NPN type
Triode and infrared light emitting diode form radiating circuit, phototriode, the 4th resistance, the 5th resistance, operational amplifier,
Adjustable resistance and LM567 chips form receiving circuit.The circuit that the utility model provides only receives the hair from the detection circuit
The infrared signal of transmit-receive radio road transmitting realizes that anti-interference has strengthened, but the problem of unstable be present, have certain limitation
Property.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and reliability is high,
The stability and success rate of shipment detection are high, and environmental suitability is strong, strong antijamming capability.
In order to solve the above technical problems, the utility model provides following technical scheme：Automatic vending machine photoelectric detective circuit,
Including photoelectric switching circuit, second order bandwidth-limited circuit, peak detection circuit and the single-chip microcomputer being sequentially connected electrically；The photoelectricity turns
Changing circuit includes infrared transmitting tube and infrared receiving tube；The input of infrared transmitting tube connects the general of single-chip microcomputer by metal-oxide-semiconductor
Output end；Second order bandwidth-limited circuit includes comparator, resistance two, electric capacity three, resistance three and electric capacity four；The infrared receiving tube
No. 2 pins connection electric capacity one input, the electric capacity one output end connection comparator input；Comparator it is defeated
Go out the input of end connection peak detection circuit, the input access reference voltage of resistance two；The output end of resistance two and electric capacity three
Connected with the input of electric capacity four；The output end of electric capacity four and the input of resistance three and comparator are all connected with；Electric capacity three and electricity
The output end of resistance three is connected with the input of peak detection circuit；Peak detection circuit includes electric capacity two and resistance one；Peak value
Detect the Analog-digital Converter input of the output end connection single-chip microcomputer of circuit.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and the photoelectric switching circuit is set
On Photoelectric Detection plate, the Photoelectric Detection plate includes Photoelectric Detection expelling plate and Photoelectric Detection receiver board, and the two sets respectively
Put the both ends relative position in automatic vending machine picking bucket.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, on the Photoelectric Detection expelling plate
It is provided with some infrared transmitting tubes；Some infrared receiving tubes are provided with the Photoelectric Detection receiver board；Infrared transmitting tube and red
Outer reception pipe is to correspond to set.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and single-chip microcomputer passes to signal certainly
Dynamic vending machine control system
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, infrared transmitting tube and infrared receiver
The number of pipe is 5.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, the single-chip microcomputer output 10kHz frequencies
The signal of rate controls the conducting of metal-oxide-semiconductor and cut-off, the conducting of metal-oxide-semiconductor and the electric power thus supplied of cut-off control infrared transmitting tube.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and the Photoelectric Detection receiver board is only
10kHz signal frequency is received, and is transferred to second order bandwidth-limited circuit.
The beneficial effects of the utility model：
The utility model provides a kind of automatic vending machine photoelectric detective circuit, and the shipment for automatic vending machine detects, institute
The level change of second order bandwidth-limited circuit detection No. 2 pins of infrared receiving tube is stated, and filters out outside possible interference signal, only
Allow 10kHz or so signal by improving the reliability of electric circuit inspection；Peak detection circuit ensures that the signal of output is steady,
Signal results are transferred to automatic vending-machine controlling system by single-chip microcomputer, and automatic vending-machine controlling system is used to determine whether goods
Fall into picking bucket.
The conducting and cut-off of 10kHz signal frequency control metal-oxide-semiconductor are exported by single-chip microcomputer, controls the letter of infrared transmitting tube
Number frequency, ensure that infrared receiving tube can only receive 10kHz signal frequency.
Because photoelectric switching circuit is distant with automatic vending-machine controlling system, in order to increase the stability of detection circuit
With the reliability of signal transmission, increase the signal of single-chip microcomputer Rreceive output in circuit, transmitted signal results by single-chip microcomputer
To automatic vending-machine controlling system.
Photoelectric detective circuit provided by the utility model, compared to traditional Photoelectric Detection mode, greatly lift automatic selling
The success rate of cargo aircraft shipment detection, the reliability of shipment get a promotion simultaneously, and antijamming capability also strengthens so that the ring of circuit board
Border adaptability also strengthens.
Brief description of the drawings
The Photoelectric Detection expelling plate and Photoelectric Detection of Fig. 1 preferred embodiments of the present utility model receive board mounting structure signal
Figure；
The second order bandwidth-limited circuit and peak detection circuit schematic diagram of Fig. 2 preferred embodiments of the present utility model；
The infrared transmitting tube circuit diagram of Fig. 3 preferred embodiments of the present utility model；
The infrared receiving tube circuit diagram of Fig. 4 preferred embodiments of the present utility model.
Embodiment
The utility model is further described with specific embodiment below, but the utility model is not by following embodiments
Restriction.
Embodiment 1
As shown in figures 1-4, the utility model provides a kind of automatic vending machine photoelectric detective circuit, including is sequentially connected electrically
Photoelectric switching circuit, second order bandwidth-limited circuit, peak detection circuit and single-chip microcomputer；The photoelectric switching circuit includes infrared
Transmitting tube S6 and infrared receiving tube S1；The general purpose outputs that the input of infrared transmitting tube passes through metal-oxide-semiconductor P4 connection single-chip microcomputers；
Second order bandwidth-limited circuit includes comparator N5532, the R29 of resistance two, the C15 of electric capacity three, the R25 of resistance three and the C19 of electric capacity four；It is described
Infrared receiving tube S1 No. 2 pins connection electric capacity one C24 input, the output end connection comparator of the C24 of electric capacity one
N5532 input；The input of comparator N5532 output end connection peak detection circuit, the R29 of resistance two input termination
Enter reference voltage V ref；The R29 output ends of resistance two are connected with the C15 of electric capacity three and the C19 of electric capacity four input；The C19's of electric capacity four
Output end and the R25 of resistance three and comparator N5532 input are all connected with；The C15 of electric capacity three and the R25 of resistance three output end with
The input connection of peak detection circuit；Peak detection circuit includes the C27 of the electric capacity two and R33 of resistance one；Peak detection circuit
Output end connects the Analog-digital Converter input of single-chip microcomputer.
The utility model provides a kind of automatic vending machine photoelectric detective circuit, and the shipment for automatic vending machine detects, institute
The level change of second order bandwidth-limited circuit detection No. 2 pins of infrared receiving tube is stated, and filters out outside possible interference signal, is led to
Second order bandwidth-limited circuit is crossed, makes the centre frequency of bandpass filter of circuit 10kHz's or so, permission 10kHz or so
Signal is by improving the reliability of electric circuit inspection；Peak detection circuit ensures that the signal of output is steady, and single-chip microcomputer is by signal results
Automatic vending-machine controlling system is transferred to, automatic vending-machine controlling system is used to determine whether that goods falls into picking bucket.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and the photoelectric switching circuit is set
On Photoelectric Detection plate, the Photoelectric Detection plate includes Photoelectric Detection expelling plate 1 and Photoelectric Detection receiver board 2, and the two is distinguished
It is arranged on the both ends relative position of automatic vending machine picking bucket.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, on the Photoelectric Detection expelling plate
It is provided with some infrared transmitting tube S6；Some infrared receiving tube S1 are provided with the Photoelectric Detection receiver board；Infrared transmitting tube
S6 and infrared receiving tube S1 is to correspond to set.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and single-chip microcomputer passes to signal certainly
Dynamic vending machine control system.Because photoelectric switching circuit is distant with automatic vending-machine controlling system, in order to increase detection electricity
The reliability of stability and the signal transmission on road, increase the signal of single-chip microcomputer Rreceive output in circuit, will be believed by single-chip microcomputer
Number result is transferred to automatic vending-machine controlling system.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, infrared transmitting tube S6 and infrared connects
Closed tube S1 number is 5.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and the single-chip microcomputer passes through program control
The signal of system output 10kHz frequencies controls metal-oxide-semiconductor P4 conducting and cut-off, and metal-oxide-semiconductor P4 conducting and cut-off control infrared hair
Penetrate the electric power thus supplied of pipe.10kHz signal frequency control metal-oxide-semiconductor P4 conducting and cut-off is exported by single-chip microcomputer, control is infrared
Transmitting tube S6 signal frequency, ensure that infrared receiving tube S1 can only receive 10kHz signal frequency.
Preferably, the utility model provides a kind of automatic vending machine photoelectric detective circuit, and the Photoelectric Detection receiver board is only
10kHz signal frequency is received, and is transferred to second order bandwidth-limited circuit.
Photoelectric detective circuit provided by the utility model, compared to traditional Photoelectric Detection mode, greatly lift automatic selling
The success rate of cargo aircraft shipment detection, the reliability of shipment get a promotion simultaneously, and antijamming capability also strengthens so that the ring of circuit board
Border adaptability also strengthens.
Operation principle：Shown in specific Fig. 1~4, automatic vending machine picking bucket both sides are provided with Photoelectric Detection expelling plate 1 and light
Electro-detection receiver board 2,5 infrared transmitting tube S6 and 5 infrared receiving tube S1 is provided with Photoelectric Detection expelling plate 1, the two is
Correspond and set.When not having goods in picking bucket, the signal of infrared transmitting tube S6 transmittings is received by infrared receiving tube S1 to be felt
Should, after consumer is in vending purchasing goods, goods can be fallen into picking bucket, and goods will stop infrared transmitting tube S6
Signal, cause infrared receiving tube S1 can not reception signal, now the level on the pin of infrared receiving tube S1 No. 2 will occur
Change, becomes high level by low level.
Infrared receiving tube S1 No. 2 pins connection electric capacity C24 is input to the benchmark electricity that comparator N5532, Vref are input
Pressure, about 2.5V.C24 electric capacity filters out input High-frequency Interference, and the C27 and R33 of N5532 output ends have collectively constituted peakvalue's checking electricity
Road, when N5532 exports high level, C27 will be electrically charged, and voltage can be maintained to a stable section of comparison, when
When N5532 is changed into low level, C27 can be discharged by R33.R29, C15, R25, C19 collectively constitute bandwidth-limited circuit,
Make what the signal of input only had frequency near 10kHz could pass through.Determined by single-chip microcomputer control metal-oxide-semiconductor P4 conducting with cut-off
Determine infrared transmitting tube S6 power supply.Single-chip microcomputer can export the signals of 10kHz frequencies to control P4 conducting and cut-off.Infrared emission
Pipe S6 tranmitting frequency i.e. 10kHz, infrared receiving tube S1 circuit only allow 10kHz or so signal frequency to pass through, in fact
Now accurate control signal.
When not having goods stop between transmitting tube and reception pipe, single-chip microcomputer is able to detect that by Analog-digital Converter
There is stable voltage signal on pin, when there is article stop, the magnitude of voltage of single-chip microcomputer collection will be reduced substantially, so as to automatic selling
Cargo aircraft system reception signal is judged.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (5)
1. automatic vending machine photoelectric detective circuit, it is characterised in that including be sequentially connected electrically photoelectric switching circuit, second order band logical
Filter circuit, peak detection circuit and single-chip microcomputer；The photoelectric switching circuit includes infrared transmitting tube and infrared receiving tube；It is infrared
The input of transmitting tube connects the general purpose outputs of single-chip microcomputer by metal-oxide-semiconductor；Second order bandwidth-limited circuit includes comparator, resistance
2nd, electric capacity three, resistance three and electric capacity four；The input of No. 2 pins connection electric capacity one of the infrared receiving tube, the electric capacity one
Output end connection comparator input；Comparator output end connection peak detection circuit input, resistance two it is defeated
Enter to terminate into reference voltage；The output end of resistance two is connected with the input of electric capacity three and electric capacity four；The output end of electric capacity four and electricity
The input of resistance three and comparator is all connected with；The output end of electric capacity three and resistance three connects with the input of peak detection circuit
Connect；Peak detection circuit includes electric capacity two and resistance one；The simulation numeral of the output end connection single-chip microcomputer of peak detection circuit turns
Change input.
2. automatic vending machine photoelectric detective circuit according to claim 1, it is characterised in that the photoelectric switching circuit is set
Put on Photoelectric Detection plate, the Photoelectric Detection plate includes Photoelectric Detection expelling plate and Photoelectric Detection receiver board, and the two is distinguished
It is arranged on the both ends relative position of automatic vending machine picking bucket.
3. automatic vending machine photoelectric detective circuit according to claim 2, it is characterised in that the Photoelectric Detection expelling plate
On be provided with some infrared transmitting tubes；Some infrared receiving tubes are provided with the Photoelectric Detection receiver board；Infrared transmitting tube and
Infrared receiving tube is to correspond to set.
4. automatic vending machine photoelectric detective circuit according to claim 3, it is characterised in that the infrared transmitting tube and red
The number of outer reception pipe is 5.
5. automatic vending machine photoelectric detective circuit according to claim 1, it is characterised in that the single-chip microcomputer passes signal
Pass automatic vending-machine controlling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397652.2U CN206638346U (en) | 2017-04-17 | 2017-04-17 | Automatic vending machine photoelectric detective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720397652.2U CN206638346U (en) | 2017-04-17 | 2017-04-17 | Automatic vending machine photoelectric detective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206638346U true CN206638346U (en) | 2017-11-14 |
Family
ID=60246517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720397652.2U Active CN206638346U (en) | 2017-04-17 | 2017-04-17 | Automatic vending machine photoelectric detective circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206638346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020030086A1 (en) * | 2018-08-09 | 2020-02-13 | 山东新北洋信息技术股份有限公司 | Vending machine |
-
2017
- 2017-04-17 CN CN201720397652.2U patent/CN206638346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020030086A1 (en) * | 2018-08-09 | 2020-02-13 | 山东新北洋信息技术股份有限公司 | Vending machine |
| US11348397B2 (en) | 2018-08-09 | 2022-05-31 | Shandong New Beiyang Information Technology Co., Ltd | Vending machine |
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