CN209248040U - Photodetection assembly, optical detection device and automatic vending machine - Google Patents
Photodetection assembly, optical detection device and automatic vending machine Download PDFInfo
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- CN209248040U CN209248040U CN201920022742.2U CN201920022742U CN209248040U CN 209248040 U CN209248040 U CN 209248040U CN 201920022742 U CN201920022742 U CN 201920022742U CN 209248040 U CN209248040 U CN 209248040U
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Abstract
The utility model provides a kind of photodetection assembly, optical detection device and automatic vending machine, it is related to the technical field of Photoelectric Detection, the photodetection assembly includes at least two Strobe inputs and at least two detection outputs, and a connecting path is respectively formed between any one Strobe input and any one detection output；It include the optical receiver and diode being connected in series on each Strobe input and the connecting path of each detection output, wherein diode is for preventing from generating reverse current in optical receiver；Each optical receiver includes input terminal and output end, and the input terminal of optical receiver is close to Strobe input, and the output end of optical receiver is close to detection output.Photodetection assembly, optical detection device and automatic vending machine provided by the utility model effectively prevent mistake occur due to the state-detection of optical receiver caused by generating reversed shunt, and then improve the accuracy and reliability of photodetection assembly detection.
Description
Technical field
The utility model relates to the technical fields of Photoelectric Detection, more particularly, to a kind of photodetection assembly, optical detection device
And automatic vending machine.
Background technique
In the prior art, for the detection device including multiple optical receivers, usually setting matrix light is connect in circuit
Device circuit is received, i.e., multiple optical receivers are divided into M row N column, each optical receiver includes first end and second end, with a line
The first end of all optical receivers is connected to the same Strobe input, for receiving gating signal, all light of same row
The second end of receiver is connected to the same detection output, for exporting sampled signal；In general, Strobe input and detection
Output end is connect with controller, makes controller that the selection that row gating signal carries out the optical receiver of full line can be used, and make
Output sampling is carried out with column output signal.
But since the quantity of optical receiver is more, when being managed by controller to multiple optical receivers, often
There is the situation of mistake in the state-detection that will appear optical receiver, reduces the accuracy and reliability of photodetection assembly detection.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of photodetection assembly, optical detection device and automatic vendings
There is the technical problem of mistake to alleviate the state-detection of optical receiver in machine.
In a first aspect, the utility model embodiment provides a kind of photodetection assembly, which includes at least two
A Strobe input and at least two detection outputs, between any one Strobe input and any one detection output
Form a connecting path；It include the light being connected in series on each Strobe input and the connecting path of each detection output
Receiver and diode, wherein diode is for preventing from generating reverse current in optical receiver；Each optical receiver includes defeated
Enter end and output end, the input terminal of optical receiver is close to Strobe input, and the output end of optical receiver is close to detection output.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, above-mentioned optical receiver is phototriode.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Two kinds of possible embodiments, wherein above-mentioned photodetection assembly further includes multiple first resistors；Each detection output passes through
One first resistor is connect with extraneous power supply.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein above-mentioned optical receiver is NPN type phototriode；Diode is set to phototriode
Collector detection output corresponding with phototriode between；Wherein, the anode of diode is connect with detection output, and two
The cathode of pole pipe and the collector of phototriode connect, and the emitter of phototriode is connected with corresponding Strobe input；
Alternatively, diode is set between the emitter Strobe input corresponding with phototriode of phototriode；Wherein, two pole
The cathode of pipe is connect with Strobe input, and the anode of diode and the emitter of phototriode connect, the collection of phototriode
Electrode is connected with corresponding detection output.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Four kinds of possible embodiments, wherein above-mentioned photodetection assembly further includes multiple second resistances；Each detection output passes through
One second resistance ground connection.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Five kinds of possible embodiments, wherein above-mentioned optical receiver is NPN type phototriode；Diode is set to phototriode
Emitter detection output corresponding with phototriode between；Wherein, the cathode of diode is connect with detection output, and two
The anode of pole pipe and the emitter of phototriode connect, and the collector of phototriode is connected with corresponding Strobe input；
Alternatively, diode is set between the collector Strobe input corresponding with phototriode of phototriode；Wherein, two pole
The anode of pipe is connect with Strobe input, and the cathode of diode and the collector of phototriode connect, the hair of phototriode
Emitter-base bandgap grading is connected with corresponding detection output.
Second aspect, the utility model embodiment also provide a kind of optical detection device, which includes above-mentioned
The photodetection assembly of one side further includes controller and light source assembly；Wherein, controller include at least two Strobe outputs and
At least two detection inputs, each Strobe input of photodetection assembly Strobe output corresponding with one on controller connect
It connects, the detection input connection corresponding with one on controller of each detection output of photodetection assembly；Light source assembly is used for
Emit light to the optical receiver of photodetection assembly.
In conjunction with second aspect, the utility model embodiment provides the first possible embodiment of second aspect,
In, above-mentioned light source assembly includes multiple optical generators and at least two light emitting control input terminals, each optical generator and light detection
At least one optical receiver of component is corresponding；Multiple optical receivers institute of the same Strobe input of the correspondence of photodetection assembly is right
The optical generator answered is connected to a light emitting control input terminal, wherein optical generator is light emitting diode, each light emitting diode
Anode connected with corresponding light emitting control input terminal；Controller further includes multiple light emitting control output ends, light source assembly it is every
The light emitting control output end connection corresponding with one of a light emitting control input terminal.
In conjunction with second aspect, the utility model embodiment provides second of possible embodiment of second aspect,
In, above-mentioned light source assembly includes that multiple optical generators, at least two light emitting control input terminals and at least two luminous adjust input
End, each optical generator is corresponding at least one optical receiver of photodetection assembly, any one light emitting control input terminal and times
It anticipates one to shine to adjust and is respectively formed a connecting path between input terminal, each light emitting control input terminal and each adjusting that shines are defeated
Entering includes at least one optical generator on the connecting path at end；The same Strobe input of the correspondence of photodetection assembly it is multiple
Optical generator corresponding to optical receiver is connected to a light emitting control input terminal, and optical generator is light emitting diode, Mei Gefa
The anode of optical diode is connected with corresponding light emitting control input terminal, the cathode of each light emitting diode and corresponding luminous adjusting
Input terminal connection；Controller further includes multiple light emitting control output ends and multiple luminous adjusting output ends, each of light source assembly
The light emitting control output end connection corresponding with one of light emitting control input terminal, each of light source assembly, which shines, adjusts input terminal and one
A corresponding luminous adjusting output end connection.
The third aspect, the utility model embodiment also provide a kind of automatic vending machine, and the automatic vending machine is configured with above-mentioned
Optical detection device described in second aspect；The automatic vending machine further includes the cargo path that at least one is used to store commodity, Mei Gehuo
Arragement direction in road along commodity is arranged at intervals with multiple optical receivers.
The utility model embodiment bring it is following the utility model has the advantages that
A kind of photodetection assembly, optical detection device and automatic vending machine provided by the embodiment of the utility model, in light detection
In component include at least two Strobe inputs and at least two detection outputs, any one Strobe input and any one
A connecting path is respectively formed between detection output, also, the connection of each Strobe input and each detection output is logical
Road includes the optical receiver and diode being connected in series, which can prevent from generating reverse current in optical receiver,
The phenomenon that prevent optical receiver from generating shunting due to reverse-conducting, caused by effectively preventing due to generating reversed shunt
There is mistake in the state-detection of optical receiver, and then improves the accuracy and reliability of photodetection assembly detection.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not making the creative labor for those skilled in the art
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of matrix light acceptor circuit schematic diagram；
Fig. 2 is a kind of structural schematic diagram of photodetection assembly provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of another photodetection assembly provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of another photodetection assembly provided by the embodiment of the utility model；
Fig. 5 is the structural schematic diagram of another photodetection assembly provided by the embodiment of the utility model；
Fig. 6 is the structural schematic diagram of another photodetection assembly provided by the embodiment of the utility model；
Fig. 7 is a kind of structural schematic diagram of optical detection device provided by the embodiment of the utility model.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not making creation
Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
Currently, matrix light receiver is usually arranged in circuit for the optical detection device including multiple optical receivers
Circuit, Fig. 1 is a kind of matrix light acceptor circuit schematic diagram in the prior art, as shown in Figure 1, with matrix light receiver
It including being illustrated for 16 optical receivers in circuit, also, include 4 Strobe inputs in matrix light acceptor circuit
With 4 detection outputs, each Strobe input and each detection output are connected to controller, and 16 optical receivers are divided
For 4 rows 4 column, the emitter of 4 optical receivers of every a line is connected to the same Strobe input, AN_ as shown in Figure 1
SEL0~AN_SEL3；The collector of 4 optical receivers of each column is connected to the same detection output, as shown in Figure 1
AN0~AN3；The base stage of each optical receiver further includes power supply in matrix light acceptor circuit, each as light-receiving window
Detection output is connected to power supply by pull-up resistor.
When detecting the state of optical receiver, controller successively sends effective low level to each Strobe input, and
And when sending low level to a Strobe input, invalid high level is sent to other each Strobe inputs, and read every
The signal of a detection output output, is easy to learn by Fig. 1, when the transmitting extremely low level of an optical receiver, that is, should
When optical receiver is strobed, when not being blocked in the optical receiver and receiving light and be in low resistive state, the collection of the optical receiver
Electrode is low level, when the optical receiver is blocked and is in high-impedance state without receiving light, the collector of the optical receiver
For high level；When the transmitting extremely high level of an optical receiver, that is, no matter should when the optical receiver is not strobed
Whether optical receiver is blocked, due between the emitter and power supply of triode due to there is no pressure difference, without electricity in triode
Miscarriage life, the current collection of the optical receiver extremely high level.
When only a line optical receiver is strobed, it is strobed due to only having an optical receiver for each column,
The optical receiver being strobed in the signal and respective column of each detection output output is corresponding, therefore, each by successively gating
Row optical receiver, and the signal of each detection output output is read when gating every row optical receiver, it can be realized and successively exist
Each optical receiver reads the signal of the optical receiver output when being strobed, control device is by exporting each optical receiver
Signal is compared with preset threshold judges whether the optical receiver is blocked, to realize the state-detection of optical receiver.
However, can have optical receiver state-detection mistake when managing multiple optical receivers using above-mentioned matrix-style
Situation.
Specifically, it is strobed and when optical receiver RX1 is blocked as shown in Figure 1, being expert in an optical receiver RX1,
Theoretically, the corresponding detection output of RX1 should export the high level greater than preset threshold, however, when being located at optical receiver RX1
Be not blocked state in multiple optical receivers of a line if there is an optical receiver RX2 is in, and with optical receiver RX1
When also thering is an optical receiver RX3 to be in multiple optical receivers of same row not to be blocked state, be strobed due to RX1 and
RX1 is blocked and cannot receive light and be in high-impedance state, the current collection of RX1 extremely high level, due to RX2 be strobed and RX2 not
Be blocked and receive light and in low resistive state, the current collection of RX2 extremely low level, if RX4 be located at RX2 same row and
It is located at the optical receiver with a line with RX3, since to be connected to a common detection defeated for the collector of RX4 and the collector of RX2
Outlet, therefore the current collection of RX4 extremely low level, since the collector of RX3 and the collector of RX1 are connected to a common detection
Output end, therefore the current collection of RX3 extremely high level, when RX4 and RX3 receives illumination, due to the extremely high electricity of the transmitting of RX4
Flat, current collection extremely low level, then RX4 is reversed conducting due to being applied backward voltage, generates in RX4 and flows to collection by emitter
The reverse current of electrode, the reverse current cause the level of the emitter of RX3 to be pulled low, between the current collection best emitter of RX3
Pressure difference is generated, generates forward current in RX3, in this way, a current loop is formed between the collector of RX3 and the collector of RX4,
The current loop can shunt the electric current in the pull-up resistor R10 for flowing through RX1, so as to cause the corresponding detection output of RX1
Preset threshold (such as 2.5V) may be lower than by holding the voltage of output, and then may cause the state-detection mistake of optical receiver.
Based on this, a kind of photodetection assembly, optical detection device and automatic vending machine provided by the embodiment of the utility model can
There is the technical problem of mistake to alleviate the state-detection of above-mentioned optical receiver.
For convenient for understanding the present embodiment, first to a kind of photodetection assembly disclosed in the utility model embodiment
It describes in detail.
Embodiment one:
The utility model embodiment provides a kind of photodetection assembly, which includes at least two selected inputs
End and at least two detection outputs, are respectively formed a company between any one Strobe input and any one detection output
Connect road；It also, include the light-receiving being connected in series on each Strobe input and the connecting path of each detection output
Device and diode, wherein the diode is for preventing from generating reverse current in optical receiver.
When specific implementation, each optical receiver includes input terminal and output end, and the input terminal of optical receiver is close to gating
Input terminal, the output end of optical receiver is close to detection output.
In order to make it easy to understand, Fig. 2 shows a kind of structural schematic diagrams of photodetection assembly, specifically, as shown in Fig. 2, with
The photodetection assembly for four Strobe inputs and four detection outputs including being illustrated, any one Strobe input
A connecting path is respectively formed between any one detection output, for example, Strobe input AN_SEL0 and detection output
The communication paths as shown in dotted line S1 are formed between AN0, are formed such as between Strobe input AN_SEL0 and detection output AN1
Communication paths shown in dotted line S2 form between Strobe input AN_SEL1 and detection output AN0 and connect as shown in dotted line S5
It include the optical receiver 200 being connected in series on the connecting path of road all, each Strobe input and each detection output
And diode, wherein the input terminal and output end of each optical receiver are not shown in Fig. 2.
It should be appreciated that photodetection assembly shown in Fig. 2 is only a kind of illustrative structural schematic diagram, in other embodiment party
In formula, the number and Strobe input of above-mentioned optical receiver and the number of detection output can also be according to actual use feelings
Condition is configured, and the utility model embodiment is not limited this.
Further, for ease of description, photodetection assembly shown in Fig. 2 is at matrix arrangement with multiple optical receivers
Example is illustrated, as shown in Fig. 2, due to each Strobe input on the connecting path of each detection output including connecting
The optical receiver and diode of connection, therefore, the input terminal of the optical receiver of the corresponding same Strobe input is to interconnect
, also, the output end for corresponding to the optical receiver of same detection output is also to interconnect, that is, with a line
The input terminal of optical receiver interconnects and is connected to a Strobe input；The output end of the optical receiver of same row is mutual
It is connected to and is connected to a detection output.
For example, in Fig. 2, Strobe input AN_SEL0 with include connecting on the connecting path of each detection output
The optical receiver and diode of connection, therefore the input terminal of the optical receiver 200 on connecting path S1~S4 shown in dotted line is
It interconnects, and is connected to Strobe input AN_SEL0.Similarly, the light on connecting path S1, S5 and S6 shown in dotted line
The output end of receiver 200 interconnects, and is connected to detection output AN0.
Since diode has one-way conduction, it can use the characteristic of diode to prevent each light-receiving
Reverse current is generated in device.In actual use, model and parameter of diode etc. can be set according to actual use situation
It sets, the utility model embodiment is not limited this.
A kind of photodetection assembly provided by the embodiment of the utility model includes that at least two gatings are defeated in photodetection assembly
Enter end and at least two detection outputs, one is respectively formed between any one Strobe input and any one detection output
Connecting path, also, each Strobe input connects with the light on the connecting path of each detection output including series connection
Receiving device and diode, the diode can prevent from generating reverse current in optical receiver, to prevent optical receiver due to reversely leading
The phenomenon that logical and generation shunts, effectively prevents occurring due to the state-detection of optical receiver caused by generating reversed shunt wrong
Accidentally, and then the accuracy and reliability that photodetection assembly detects is improved.
In actual use, the optical receiver in the utility model embodiment is usually phototriode.Specifically, the light
Quick triode can be NPN type phototriode, or positive-negative-positive phototriode.
Based on the optical receiver of above-mentioned phototriode form, above-mentioned photodetection assembly provided by the embodiment of the utility model
It further include multiple first resistors；Specifically, each detection output passes through a first resistor and connect with extraneous power supply.
In order to make it easy to understand, Fig. 3 shows the structural schematic diagram of another photodetection assembly, wherein connect in Fig. 3 with light
Device is received to be illustrated for NPN type phototriode, also, equally defeated including four gatings with the photodetection assembly in Fig. 3
Enter to hold and be illustrated for four detection outputs, that is, optical receiver forms the matrix light detection components of 4 rows 4 column.
As shown in figure 3, in addition to phototriode and diode, photodetection assembly further include first resistor R10~
R13, wherein the detection output of the optical receiver of each column is connect by the first resistor of the column with external world power supply VCC, example
Such as, the detection output AN0 of the optical receiver of first row is connect by first resistor R10 with external world power supply VCC, the light of secondary series
The detection output AN1 of receiver is connect by first resistor R11 with external world power supply VCC.
Further, as shown in figure 3, the above-mentioned diode collector that is set to phototriode is corresponding with phototriode
Between detection output；Wherein, the anode of diode is connect with detection output, the cathode of diode and the collection of phototriode
Electrode connection, the emitter of phototriode are connected with corresponding Strobe input.
In addition, removing the set-up mode of diode shown in Fig. 3, above-mentioned diode can also be set to the hair of phototriode
Between emitter-base bandgap grading Strobe input corresponding with phototriode；Therefore, it is based on Fig. 3, Fig. 4 also shows another photodetection assembly
Structural schematic diagram, Fig. 4 shows that diode is set to the emitter gating corresponding with phototriode of phototriode
Embodiment between input terminal, wherein the cathode of diode is connect with Strobe input, the anode of diode and photosensitive three pole
The emitter of pipe connects, and the collector of phototriode is connect with detection output.
In actual use, photodetection assembly shown in Fig. 2, photodetection assembly provided by the embodiment of the utility model are based on
It further include multiple second resistances；Specifically, each detection output passes through a second resistance ground connection.
In order to make it easy to understand, Fig. 5 shows the structural schematic diagram of another photodetection assembly, wherein in Fig. 5, equally
It is illustrated so that optical receiver is NPN type phototriode as an example, also, the photodetection assembly includes four Strobe inputs
With four detection outputs, that is, optical receiver forms the matrix light detection components of 4 rows 4 column.
As shown in figure 5, in addition to phototriode and diode, photodetection assembly further include second resistance R20~
R23, wherein the detection output of the optical receiver of each column is grounded by the second resistance of the column, for example, the light of first row
The detection output AN0 of receiver is grounded by second resistance R20, and the detection output AN1 of the optical receiver of secondary series passes through
Second resistance R21 ground connection.
Further, as shown in figure 5, the above-mentioned diode emitter that is set to phototriode is corresponding with phototriode
Between detection output；Wherein, the cathode of diode is connect with detection output, the anode of diode and the hair of phototriode
Emitter-base bandgap grading connection, the collector of phototriode are connected with corresponding Strobe input.
In addition, removing the set-up mode of diode shown in fig. 5, above-mentioned diode can also be set to the collection of phototriode
Between electrode Strobe input corresponding with phototriode；Therefore, it is based on Fig. 5, Fig. 6 also shows another photodetection assembly
Structural schematic diagram, Fig. 6 shows that diode is set to the collector gating corresponding with phototriode of phototriode
Embodiment between input terminal, wherein the anode of diode is connect with Strobe input, the cathode of diode and photosensitive three pole
The collector of pipe connects, and the emitter of phototriode is connected with the corresponding detection output.
In actual use, for Fig. 3 and photodetection assembly shown in Fig. 4, when detecting the state of optical receiver, control
Device successively can send effective low level to each Strobe input, to gate the optical receiver of the row；For Fig. 5 and Fig. 6
Shown in photodetection assembly, detect optical receiver state when, controller can successively to each Strobe input transmission have
The high level of effect, to gate the optical receiver of the row, specific photodetection assembly can be configured according to actual use situation,
For example, the output end of the optical receiver of each column is arranged in such a way that first resistor connect with extraneous power supply, alternatively, setting is often
The output end of the optical receiver of one column in such a way that second resistance is grounded etc., is specifically subject to and actually uses situation, this
Utility model embodiment is not limited this.
Embodiment two:
The photodetection assembly provided based on the above embodiment, the utility model embodiment provide a kind of optical detection device,
The optical detection device includes photodetection assembly described in above-described embodiment, further includes controller and light source assembly；
Wherein, controller include at least two Strobe outputs and at least two detection inputs, photodetection assembly it is every
The Strobe output connection corresponding with one on controller of a Strobe input, each detection output and control of photodetection assembly
A corresponding detection input connection on device processed；Light source assembly is used to emit light to the optical receiver of photodetection assembly
Line.
Further, above-mentioned light source assembly includes multiple optical generators and at least two light emitting control input terminals, each light hair
Raw device is corresponding at least one optical receiver of photodetection assembly；The same Strobe input of the correspondence of photodetection assembly it is multiple
Optical generator corresponding to optical receiver is connected to a light emitting control input terminal, wherein optical generator is light emitting diode, often
The anode of a light emitting diode is connected with corresponding light emitting control input terminal；Controller further includes multiple light emitting control output ends,
The light emitting control output end connection corresponding with one of each light emitting control input terminal of light source assembly.
As described above, in actual use, when detecting the state of optical receiver, controller is successively to each selected input
End sends effective level, to gate the optical receiver of the row, due to the same Strobe input of the correspondence of photodetection assembly
Optical generator corresponding to multiple optical receivers is connected to a light emitting control input terminal, and therefore, controller can be to quilt at this time
The light emitting control input terminal that the corresponding optical generator of a line optical receiver of gating is connected sends effective level (such as high electricity
It is flat), it is shone with controlling the corresponding optical generator of a line optical receiver being strobed, to provide light for above-mentioned multiple optical receivers
According to realizing the detection of the state of multiple optical receivers.By make photodetection assembly the same Strobe input of correspondence it is multiple
Optical generator corresponding to optical receiver is connected to a light emitting control input terminal, is conducive to simplified control device to optical detection device
Control.
In actual use, for photodetection assembly, due to be connected to the same Strobe input optical receiver it is defeated
Enter end to interconnect, therefore, for be connected to the same Strobe input optical receiver can with a public optical generator, and
And the light of sending can be delivered to the reception area of each optical generator by light guide equipment, such as light-strip by the optical generator
(e.g., the base stage of phototriode), meanwhile, the light emitting control that the light emitting control input terminal of the optical generator is connected to controller is defeated
Outlet controls luminance by controller.Light is controlled when a Strobe output by controller exports effective level
The corresponding Strobe input of detection components gates, to detect the state for the multiple optical receivers for being connected to the Strobe input
When, it is only necessary to effective level is exported to corresponding light emitting control input terminal by controller, makes above-mentioned multiple light-receivings
The corresponding common optical generator of device shines.
In actual use, can also be occurred for being connected to the optical receiver of the same detection output with a public light
Device, and the light that optical generator issues is delivered to by light guide equipment the reception area of each optical generator.
Further, any several optical receivers in multiple optical receivers can also be selected according to the actual situation, it is e.g., real
The public optical generator of these optical receivers is arranged in multiple optical receivers being closer in the installation site of border etc.；It can be with every
A optical receiver corresponds to an optical generator, and specific set-up mode can be configured according to actual use situation, this reality
This is not limited with new embodiment.
In actual use, above-mentioned optical generator is usually light emitting diode, such as infrared light-emitting diode, corresponding light
Receiver is also possible to the corresponding phototriode of infrared light of same wave band.
In addition, in actual use, can also luminous intensity to multiple optical generators that above-mentioned light source assembly includes into
Row is adjusted, and therefore, above-mentioned light source assembly can also include shining to adjust input terminal, specifically, for optical generator is adjusted
The light source assembly of luminous intensity includes that multiple optical generators, at least two light emitting control input terminals and at least two luminous adjustings are defeated
Enter end, each optical generator is corresponding at least one optical receiver of photodetection assembly, any one light emitting control input terminal with
Any one, which shines to adjust, is respectively formed a connecting path between input terminal, each light emitting control input terminal and each shine are adjusted
It include at least one optical generator on the connecting path of input terminal；The same Strobe input of the correspondence of photodetection assembly it is more
Optical generator corresponding to a optical receiver is connected to a light emitting control input terminal, wherein above-mentioned optical generator can be hair
Optical diode, the anode of each light emitting diode are connected with corresponding light emitting control input terminal, the cathode of each light emitting diode
It is connected with corresponding luminous adjusting input terminal；Controller further includes multiple light emitting control output ends and multiple luminous adjusting outputs
End, the light emitting control output end connection corresponding with one of each light emitting control input terminal of light source assembly, each of light source assembly
It shines and adjusts input terminal luminous adjusting output end connection corresponding with one.
In actual use, the voltage of the luminous adjusting input terminal of the adjustable light source assembly of controller, by adjusting the hair
Light adjusts the voltage of input terminal, the pressure difference at adjustable light emitting diode both ends, thus to the luminous intensity of light emitting diode into
Row is adjusted.
In order to make it easy to understand, Fig. 7 shows a kind of structural schematic diagram of optical detection device, wherein for ease of description, figure
It illustrate only the partial structure diagram of controller and light source assembly in 7, also, in Fig. 7, include 16 light with light source assembly
It is illustrated for generator, also, 16 optical generators form the matrix array of 4 rows 4 column, wherein optical generator is
The form of light emitting diode.
Wherein, in the structural schematic diagram of optical detection device shown in Fig. 7, controller passes through one light emitting control output of control
End exports effective level, can control lumination of light emitting diode.
Specifically, as shown in fig. 7, the anode with the light emitting diode of a line interconnects and is connected to the control that shines
Input terminal processed, such as R1~R4, a light emitting control output end of each light emitting control input terminal and controller is connected.Controller is logical
It crosses one light emitting control output end of control and exports effective level (such as low level), can control a line lumination of light emitting diode.
Further, the cathode of the light emitting diode of same row interconnects and is connected to the adjusting input terminal that shines,
Controller further includes multiple luminous adjusting output ends (D1~D4 in such as Fig. 7), and each of light source assembly, which shines, adjusts input terminal
It is connect with one of the controller adjusting output end that shines, the luminous adjusting output end of controller can be for PWM output function
Port, pass through adjust shine adjust output end voltage, the pressure difference at adjustable light emitting diode both ends, thus adjust shine
The luminous intensity of diode, and then may be implemented being capable of separately adjustable each light emitting diode in a line lumination of light emitting diode
Luminous intensity.
Optical detection device provided by the embodiment of the utility model has identical with photodetection assembly provided by the above embodiment
Technical characteristic reach identical technical effect so also can solve identical technical problem.
The utility model embodiment additionally provides a kind of automatic vending machine, which fills configured with above-mentioned light detection
It sets.
The automatic vending machine further includes that at least one is used to store the cargo paths of commodity, along the arrangement side of commodity in each cargo path
To interval, multiple optical receivers are set.
Specifically, the light source assembly of optical detection device includes multiple optical generators, the optical generator that light source assembly includes
Quantity is identical as the quantity for the optical receiver that photodetection assembly includes and position in cargo path corresponds, identical in cargo path
The optical generator and optical receiver of position can form a photoelectric sensor；Multiple photoelectric sensors are according to preset
Every setting in cargo path；The optical generator and optical receiver of usual each photoelectric sensor are oppositely arranged on cargo path two sides, each
Photoelectric sensor is for detecting in cargo path whether have commodity at corresponding position.
To sum up, photodetection assembly provided by the embodiment of the utility model, optical detection device and automatic vending machine, by every
It is arranged between the corresponding Strobe input of a optical receiver and detection output for preventing from generating reverse current in optical receiver
Diode, can prevent the optical receiver from generating shunting due to reverse-conducting, avoid due to generate reversed shunt and cause
The phenomenon of optical receiver state-detection mistake effectively increases the accuracy and reliability of photodetection assembly detection.
It is apparent to those skilled in the art that for convenience and simplicity of description, the light of foregoing description is examined
The specific work process of device and automatic vending machine is surveyed, can be with reference to the corresponding process in previous embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.To those skilled in the art, above-mentioned term can be understood in this reality with concrete condition
With the concrete meaning in novel.
In the description of place the utility model, it should be noted that term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term
" first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that above embodiments, only specific embodiment of the present utility model, to illustrate that this is practical
Novel technical solution, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned implementation
The utility model is described in detail in example, it should be understood by those skilled in the art that: any skill for being familiar with the art
Art personnel within the technical scope disclosed by the utility model, can still carry out technical solution documented by previous embodiment
Modification can readily occur in variation or equivalent replacement of some of the technical features；And these are modified, change or replace
It changes, the spirit and scope for the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution should all cover
It is within the protection scope of the utility model.Therefore, the protection scope of the utility model should be with scope of protection of the claims
It is quasi-.
Claims (10)
1. a kind of photodetection assembly, which is characterized in that the photodetection assembly includes at least two Strobe inputs and at least two
A detection output is respectively formed a connection between any one of Strobe input and any one of detection output
Access；
It include the light-receiving being connected in series on each Strobe input and the connecting path of each detection output
Device and diode, wherein the diode is for preventing from generating reverse current in the optical receiver；
Each optical receiver includes input terminal and output end, and the input terminal of the optical receiver is close to the selected input
End, the output end of the optical receiver is close to the detection output.
2. photodetection assembly according to claim 1, which is characterized in that the optical receiver is phototriode.
3. photodetection assembly according to claim 2, which is characterized in that the photodetection assembly further includes multiple first electricity
Resistance；Each detection output passes through the first resistor and connect with extraneous power supply.
4. photodetection assembly according to claim 3, which is characterized in that the optical receiver is NPN type phototriode；
The diode is set to the collector detection output corresponding with the phototriode of the phototriode
Between end；
Wherein, the anode of the diode is connect with the detection output, the cathode of the diode and photosensitive three pole
The collector of pipe connects, and the emitter of the phototriode is connected with the corresponding Strobe input；Alternatively,
The diode is set to the emitter selected input corresponding with the phototriode of the phototriode
Between end；
Wherein, the cathode of the diode is connect with the Strobe input, the anode of the diode and photosensitive three pole
The emitter of pipe connects, and the collector of the phototriode is connected with the corresponding detection output.
5. photodetection assembly according to claim 2, which is characterized in that the photodetection assembly further includes multiple second electricity
Resistance；Each detection output passes through the second resistance ground connection.
6. photodetection assembly according to claim 5, which is characterized in that the optical receiver is NPN type phototriode；
The diode is set to the emitter detection output corresponding with the phototriode of the phototriode
Between end；
Wherein, the cathode of the diode is connect with the detection output, the anode of the diode and photosensitive three pole
The emitter of pipe connects, and the collector of the phototriode is connected with the corresponding Strobe input；Alternatively,
The diode is set to the collector selected input corresponding with the phototriode of the phototriode
Between end；
Wherein, the anode of the diode is connect with the Strobe input, the cathode of the diode and photosensitive three pole
The collector of pipe connects, and the emitter of the phototriode is connected with the corresponding detection output.
7. a kind of optical detection device, which is characterized in that the optical detection device includes the described in any item light of claim 1~6
Detection components further include controller and light source assembly；
Wherein, the controller includes at least two Strobe outputs and at least two detection inputs, the photodetection assembly
The Strobe output connection corresponding with one on the controller of each Strobe input, the photodetection assembly it is every
The detection input connection corresponding with one on the controller of a detection output；
The light source assembly is used to emit light to the optical receiver of the photodetection assembly.
8. optical detection device according to claim 7, which is characterized in that the light source assembly include multiple optical generators and
At least two light emitting control input terminals, at least one optical receiver pair of each optical generator and the photodetection assembly
It answers；
Optical generator corresponding to multiple optical receivers of the same Strobe input of the correspondence of the photodetection assembly is connected to
One light emitting control input terminal, wherein the optical generator be light emitting diode, the anode of each light emitting diode with it is right
The light emitting control input terminal connection answered；
The controller further includes multiple light emitting control output ends, each of described light source assembly light emitting control input terminal with
One corresponding light emitting control output end connection.
9. optical detection device according to claim 7, which is characterized in that the light source assembly include multiple optical generators,
At least two light emitting control input terminals and at least two luminous adjusting input terminals, each optical generator and the light detection group
At least one optical receiver of part is corresponding, any one of light emitting control input terminal and any one of luminous adjusting input
A connecting path, each light emitting control input terminal and each luminous connection for adjusting input terminal are respectively formed between end
It include at least one optical generator on access；
Optical generator corresponding to multiple optical receivers of the same Strobe input of the correspondence of the photodetection assembly is connected to
One light emitting control input terminal, wherein the optical generator be light emitting diode, the anode of each light emitting diode with it is right
The light emitting control input terminal connection answered, the cathode of each light emitting diode and the corresponding luminous adjusting input terminal
Connection；
The controller further includes multiple light emitting control output ends and multiple luminous adjusting output ends, each of described light source assembly
The light emitting control input terminal light emitting control output end connection corresponding with one, each of described light source assembly hair
Light adjusts the input terminal luminous adjusting output end connection corresponding with one.
10. a kind of automatic vending machine, which is characterized in that the automatic vending machine is described in any item configured with claim 7~9
Optical detection device；
The automatic vending machine further includes that at least one is used to store the cargo paths of commodity, along the arrangement of commodity in each cargo path
Direction is arranged at intervals with multiple optical receivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920022742.2U CN209248040U (en) | 2019-01-07 | 2019-01-07 | Photodetection assembly, optical detection device and automatic vending machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920022742.2U CN209248040U (en) | 2019-01-07 | 2019-01-07 | Photodetection assembly, optical detection device and automatic vending machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359559A (en) * | 2021-06-15 | 2021-09-07 | 威海新北洋技术服务有限公司 | Control circuit and storage device |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359559A (en) * | 2021-06-15 | 2021-09-07 | 威海新北洋技术服务有限公司 | Control circuit and storage device |
| CN113359559B (en) * | 2021-06-15 | 2022-03-29 | 威海新北洋技术服务有限公司 | Control circuit and storage device |
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