CN110361041A - Light quantity scaling method, device and system - Google Patents
Light quantity scaling method, device and system Download PDFInfo
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Abstract
A kind of light quantity scaling method, device and system.The light quantity scaling method includes: to be adjusted according to the light quantity of the reflected light from target detection thing to value for the projection quantity；According to preset light quantity target value to value for the projection quantity and/or the light quantity of the reflected light from target detection thing is adjusted by the gain of light；Show the corresponding signal of the light quantity target value.The embodiment of the present invention is by controlling the light quantity (value for the projection quantity) emitted to recognizate (target detection thing) and detecting reflection light quantity (light income), carry out the tuning of light quantity, the intensity for the light quantity being detected by a sensor by recognizate reflection is calibrated in the range of an anticipation, even if Lai Shixian sensor similarly can steadily detect recognizate in the state of having powerful connections reflected light.
Description
Technical field
The present invention relates to photoelectric detection technology field more particularly to a kind of light quantity scaling methods, device and system.
Background technique
Photoelectric sensor is that the variation of the light quantities such as reflection, transmission, blocking occurs on object using detection light to carry out object (title
For recognizate) perception, however, lead to not if background can generate interference to the optical path of anticipation there are background around object
Detect object or testing result inaccuracy.Therefore, there are how to carry out in high quality in the case where background around object
The detection of object is always that photoelectric sensor wants the project solved.
Currently, in order to solve the above problems, being using more scheme: light quantity being received using photoelectric sensor strong
Degree, sets different threshold values, to judge the current state whether detected in background.
Fig. 1 is the schematic diagram of a detection scene of sensor.As shown in Figure 1, the transmitting light issued from sensor passes through
The reflection of recognizate, reflected light can be incident on sensor and be detected by a sensor, and sensor is according to the reflected light detected
Intensity size is to determine whether there are recognizates.However, due to the reflex of background, background reflected light caused by background
It can be incident on sensor, be detected by a sensor, cause sensor that cannot correctly carry out the detection of object.
Fig. 2 be have powerful connections and without background under corresponding relationship between light income and recognizate schematic diagram.Such as Fig. 2
Shown, in normal state, when not having background, the light of recognizate reflection is incident on sensor, is detected by a sensor, sensor
The light quantity (referred to as light income) that will test is compared with preset threshold value, and whether there is or not detections according to comparison result progress
The judgement of object simultaneously exports judging result, for example, when light income is greater than threshold value, it is believed that have recognizate, export " ON ", work as light income
When less than threshold value, it is believed that there is no recognizate, export " OFF ".However, the light of background reflection equally can be incident when there are background
It to sensor, is detected by a sensor, at this moment, even if the light income that sensor detects may also reach one without recognizate
Determine intensity, be more than threshold point, there are recognizates at this point, sensor is possible to take for, to generate the judgement and output of mistake.
It should be noted that the above description of the technical background be intended merely to it is convenient to technical solution of the present invention carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes of the invention
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
Inventors have found that in the prior art, can by way of adjustment of sensitivity come the phenomenon that evading Fig. 2, for example,
The influence for overcoming background reflected light to generate by increasing threshold value, however, if the light value of background reflected light and recognizate are anti-
The light value for penetrating light approaches or the light value of background reflected light is greater than the light value of recognizate reflected light, then there is sensor
Still the case where can not detecting recognizate.In addition, in actual field, since background is varied, the surface color of background,
Roughness, shape, gradient etc., can all influence the size of background reflected light, even if increasing threshold value, also can not effectively evade
Malfunction of the influence of background reflected light to detect.
To solve the above-mentioned problems at least one, the embodiment of the invention provides a kind of light quantity scaling method, device and
System, even if sensor similarly can steadily detect recognizate in the state of having powerful connections reflected light to realize.
According to a first aspect of the embodiments of the present invention, a kind of light quantity scaling method is provided, wherein the described method includes:
Value for the projection quantity is adjusted according to the light quantity of the reflected light from target detection thing；
According to preset light quantity target value to value for the projection quantity and/or the light quantity of the reflected light from target detection thing by
The gain of light is adjusted；
Show the corresponding signal of the light quantity target value.
According to a second aspect of the embodiments of the present invention, a kind of light quantity caliberating device is provided, wherein described device includes:
The first adjustment unit is adjusted value for the projection quantity according to the light quantity of the reflected light from target detection thing；
Second adjustment unit, according to preset light quantity target value to value for the projection quantity and/or from target detection thing
The light quantity of reflected light is adjusted by the gain of light；
Display unit shows the corresponding signal of the light quantity target value.
According to a third aspect of the embodiments of the present invention, a kind of photodetector system is provided, wherein the system comprises:
Sensor projects transmitting light to target detection thing, and receives reflected light from target detection thing；
Controller is adjusted according to light quantity of the fader control optical-projection control circuit of the reflected light to the transmitting light
It is whole, and the optical-projection control circuit is controlled according to preset light quantity target value, the light quantity of the transmitting light is adjusted,
And/or control light gain control circuit being adjusted by the gain of light to the light quantity of the reflected light；
Optical-projection control circuit is adjusted according to light quantity of the control of the controller to the transmitting light；
Light gain control circuit, according to the control of the controller to the light quantity of the reflected light by the gain of light into
Row adjustment；
Output display circuit, output show the corresponding signal of the light quantity target value.
The beneficial effects of the present invention are: by controlling the light quantity (value for the projection quantity) emitted to recognizate and detecting reflection light quantity
(light income) carries out the tuning of light quantity, allow reflected by recognizate and the intensity of light quantity that is detected by a sensor by
Calibration is in the range of an anticipation, even if Lai Shixian sensor similarly can be steadily in the state of having powerful connections reflected light
Detect recognizate.
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies original of the invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
The embodiment of the present invention elements and features described in one drawing or one embodiment can with one or
Elements and features shown in more other attached drawings or embodiment combine.In addition, in the accompanying drawings, similar label indicates
Corresponding component in several attached drawings, and may be used to indicate corresponding component used in more than one embodiment.
Included attached drawing is used to provide to be further understood from the embodiment of the present invention, and which constitute one of specification
Point, for illustrating embodiments of the present invention, and come together to illustrate the principle of the present invention with verbal description.Under it should be evident that
Attached drawing in the description of face is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying wound
Under the premise of the property made is laborious, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is the schematic diagram of a detection scene of sensor；
Fig. 2 be have powerful connections and without background under corresponding relationship between light income and recognizate schematic diagram；
Fig. 3 is the schematic diagram of an embodiment of the relationship between the light income of sensor and setting distance；
Fig. 4 is the schematic diagram of an embodiment of the relationship between the value for the projection quantity of sensor and detection distance；
Fig. 5 is the schematic diagram of another detection scene of sensor；
Fig. 6 is the schematic diagram of the another embodiment of the relationship between the light income of sensor and setting distance；
Fig. 7 is the schematic diagram of an embodiment of the light quantity scaling method of embodiment 1；
Fig. 8 is the schematic diagram of the another embodiment of the light quantity scaling method of embodiment 1；
Fig. 9 is that the relationship of light income and threshold value illustrates schematic diagram under the conditions of having powerful connections before light quantity is demarcated.
Figure 10 is shown before light quantity calibration with the relationship comparative illustration of light income and threshold value after light quantity calibration under the conditions of having powerful connections
It is intended to.
Figure 11 is the schematic diagram of an embodiment of the light quantity caliberating device of embodiment 2；
Figure 12 is the schematic diagram of an embodiment of the first adjustment unit of the light quantity caliberating device of Figure 11；
Figure 13 is the schematic diagram of an embodiment of the second adjustment unit of the light quantity caliberating device of Figure 11；
Figure 14 is the schematic diagram of an embodiment of the display unit of the light quantity caliberating device of Figure 11；
Figure 15 is the schematic diagram of an embodiment of the photodetector system of embodiment 3.
Specific embodiment
Referring to attached drawing, by following specification, the aforementioned and other feature of the embodiment of the present invention be will be apparent.?
In following description and drawings, the particular implementation of the embodiment of the present invention is specifically disclosed, which show can wherein use
The some embodiments of the principle of the embodiment of the present invention, it will thus be appreciated that the embodiment of the present invention is not limited to described embodiment party
Formula, on the contrary, the embodiment of the present invention includes the whole modifications, modification and the equivalents that fall within the scope of the appended claims.
In embodiments of the present invention, term " first ", " second " etc. are used to distinguish different elements from appellation, but
It is not offered as space arrangement or the time sequencing etc. of these elements, these elements should not be limited by these terms.Term " and/
Or " include the associated term listed one kind or any one of multiple and all combinations.Term "comprising", " comprising ",
" having " etc. refers to the presence of stated feature, element, element or component, but presence or addition one or more is not precluded
Other features, element, element or component.
In embodiments of the present invention, singular " one ", "the" etc. include plural form, should be broadly interpreted as "an"
Or " one kind " and be not defined as "one" meaning；Furthermore term " described " be interpreted as both include singular and also including
Plural form, unless the context clearly indicates otherwise.Furthermore term " according to " is interpreted as " based in part on ... ", term
" being based on " is interpreted as " being at least partially based on ... ", unless the context clearly indicates otherwise.
Below first to the present embodiments relate to concept and working principle be briefly described.The embodiment of the present invention is with light
It is illustrated for electric transducer, can be projection and accepted light divergence type sensor, be also possible to one-piece type sensor, can also be
Amplifier divergence type sensor, for convenience of explanation, referred to collectively below as " sensor ".
Fig. 3 is one of the relationship between the light income of sensor and setting distance (the distance between recognizate and sensor)
The schematic diagram of a embodiment.In general, the light quantity that sensor is emitted is bigger, the light quantity that can be received is stronger, can
The distance of detection is also longer.As shown in figure 3, under the premise of the light quantity (value for the projection quantity) of sensor emission is certain, by recognizate
Distance is inversely proportional between the light quantity (light income) and recognizate and sensor of reflection, that is, between recognizate and sensor away from
From bigger, the light that sensor can receive is smaller.In other words, if will be apart from fixation, the light of sensor emission be got over
Strongly, the light that sensor can receive is bigger.Therefore, it can be adjusted, be come real by the light launched sensor
The purpose of now adjustment detection distance.
Fig. 4 is the schematic diagram of an embodiment of the relationship between the value for the projection quantity of sensor and detection distance.Such as Fig. 4 institute
Show, decayed by the value for the projection quantity of reduction sensor, namely the light emitted sensor, can achieve the different detections of setting
The purpose of distance.Fig. 5 is the schematic diagram of another detection scene of sensor, as shown in figure 5, in embodiments of the present invention, it can
Distance threshold is detected with setting, the reflected light of the threshold distance corresponding to the detection distance threshold, background will not be by sensor
It detects, and the reflected light of recognizate can just be detected by a sensor.In this way, the object (background) beyond threshold distance is just
It will not be detected, and the object (recognizate) within threshold distance still can be detected normally.
On the other hand, to be decayed by the light emitted sensor and compared with normal condition, value for the projection quantity weakens, and
The light (detectable substance reflected light) reflected by recognizate becomes fainter, therefore, the light (light that sensor is received
Amount) just become very faint, in this way, sensor will become very sensitive during detection, recognizate slightly has vibration, color
Difference, any surface finish difference etc., sensor will generate malfunction.Fig. 6 is between the light income of sensor and setting distance
Relationship another embodiment schematic diagram.As shown in fig. 6, in the case where same range difference namely range difference is fixed
In the case where, just become smaller as the difference (light quantity difference 2) for light income obtained from the light that sensor is emitted of decaying.
In embodiments of the present invention, by demarcating light quantity target value, the light quantity between object detection and background reflection is increased
Difference, it is ensured that have enough safe differentials away from the light quantity that background inhibition may be implemented is demarcated between movement level and decision threshold.In order to
Facilitate explanation, in embodiments of the present invention, using the corresponding light income of above-mentioned detection distance threshold as base position.
The various embodiments of the embodiment of the present invention are illustrated with reference to the accompanying drawing.These embodiments are example
Property, it is not the limitation to the embodiment of the present invention.
Embodiment 1
Present embodiments provide a kind of light quantity scaling method.
Fig. 7 is the schematic diagram of an embodiment of the light quantity scaling method of the present embodiment, as shown in fig. 7, this method packet
It includes:
Step 701: value for the projection quantity being adjusted according to the light quantity of the reflected light from target detection thing；
Step 702: according to preset light quantity target value to value for the projection quantity and/or the reflected light from target detection thing
Light quantity is adjusted by the gain of light；
Step 703: showing the corresponding signal of the light quantity target value.
In the present embodiment, by controlling the light quantity (value for the projection quantity) emitted to recognizate (target detection thing) and detecting reflection
Light quantity (light income), carries out the tuning of light quantity, so that the intensity for the light quantity for reflecting and being detected by a sensor by recognizate can
To be calibrated in the range of an anticipation, even if Lai Shixian sensor similarly can be steady in the state of having powerful connections reflected light
Surely recognizate is detected.
In one embodiment, the distance between recognizate and sensor are relatively close namely value for the projection quantity is relatively large, this
When, it can be decayed (step 701) by optical-projection control circuit to value for the projection quantity, the value for the projection quantity after decaying reflects quilt by recognizate
Sensor receives, then, required for the reflected light which reflects can be successively amplified to by light gain control circuit
Signal level (step 702) after being handled via controller, is output to output display circuit and is shown (step 703), by
This, it can be ensured that light quantity difference required for realizing.
In another embodiment, the distance between recognizate and sensor are farther out namely value for the projection quantity is relatively small, this
When, the light quantity that sensor is subject to is also smaller, can be increased (step 701) to value for the projection quantity by optical-projection control circuit, equally, increases
Value for the projection quantity after big is received by recognizate reflection by sensor, and then, light gain control circuit can be anti-by the recognizate
The reflected light penetrated is sequentially reduced to required signal level (step 702), after being handled via controller, is output to output
Display circuit is shown (step 703), thus, it is possible to ensure to realize required light quantity difference.
In both of the aforesaid embodiment, required signal level is the corresponding signal value of light quantity target value, also,
Required light quantity difference is to be determined by light quantity target value, and it is using the light quantity of the reflected light of background reflection as benchmark position
Obtained from.
Method according to the present embodiment, it may be convenient to setting output echo signal value, it may be assumed that can freely set one
It may insure the light quantity target value under above-mentioned working environment, by freely demarcating to value for the projection quantity and/or by the control of the gain of light
In detection state and non-detection state, has powerful connections and without the light amount signal show value under each working condition such as background, increase
Object detection background reflection between light quantity difference away from, it is ensured that movement level and decision threshold between have enough safe differentials away from,
Realize the light quantity calibration that background inhibits.
In an embodiment of step 701, the threshold value for being compared with light income can be set, it should with judgement
The power of light income.For example, light quantity detection can be carried out to target detection thing, the light of the reflected light from target detection thing is obtained
It measures (light income), if the light income is less than first threshold, increases value for the projection quantity；If the light income is greater than second threshold,
Decaying light income.Here, first threshold and second threshold can be same namely the two can be equal；It is also possible to difference
Namely the two can be unequal, specifically can be set as needed.
In an embodiment of step 702, light quantity difference, example can be determined according to preset light quantity target value
Such as, thus light quantity difference is obtained using light quantity target value as maximum position as benchmark position using the light quantity of the reflected light of background reflection,
Then whether it is adjusted in the reasonable scope to value for the projection quantity and/or by the gain of light according to the light quantity difference.For example, if light quantity difference
In the reasonable scope, then it can be adjusted according to the light quantity of the reflected light from target detection thing to by the gain of light；If light
Amount difference not in the reasonable scope, then can the light quantity according to the reflected light from background and the reflected light from target detection thing
Light quantity is adjusted value for the projection quantity, and can further according to the light quantity of the reflected light from target detection thing to by the gain of light into
Row adjustment.
In the present embodiment, light quantity difference refer in the reasonable scope decision threshold and light quantity target value and background light output it
Between have certain safe ampleness difference so that have powerful connections interference in the case where also may be implemented object stablize detection.Here,
Decision threshold can be the median namely light quantity target value-decision threshold=decision threshold-of light quantity target value and background light output
Background light output, but the present embodiment is not in this, as limitation.
In the present embodiment, it is carried out according to the light quantity (light income) of the reflected light from target detection thing to by the gain of light
Adjustment, can be set the threshold value for being compared with light income, also to judge the power of light income.For example, can be to target
Detectable substance carries out light quantity detection, obtains the light quantity of the reflected light from target detection thing；If the light income is less than third threshold value,
Then increase by the gain of light；If the light income is greater than the 4th threshold value, reduce by the gain of light.Here, third threshold value and the 4th threshold
Value can be same namely the two can be equal；Being also possible to different namely the two can be unequal, specifically can root
According to needing to set.Also, the third threshold value and the 4th threshold value can be equal or different with pre-determined first threshold and second threshold,
It is specifically dependent upon needs.By that light income can be controlled in reasonable range to the adjustment by the gain of light.
In the present embodiment, the light of the reflected light according to the light quantity of the reflected light from background and from target detection thing
Amount is adjusted value for the projection quantity, can carry out light quantity detection to background and target detection thing, obtain the reflected light from background
The light quantity of light quantity and the reflected light from target detection thing, if the light quantity of the reflected light from background, which is greater than or equal to, comes from mesh
The reflected light of the light quantity namely background of marking the reflected light of detectable substance is too strong, then can decay value for the projection quantity, on the contrary, if from back
The light quantity of the reflected light of scape is less than the light quantity of the reflected light from target detection thing, then can increase value for the projection quantity or keep light projector
Measure it is constant, then can be by the way that light income be controlled in reasonable range to the adjustment by the gain of light.
In an embodiment of step 703, due to being demarcated to light quantity target value, current indication range has
It possibly can not show calibrated light quantity target value, in the present embodiment, indication range can also be adjusted.For example,
Judge whether display is saturated, if being displayed without saturation, increase display scale, if display is excessively saturated, reduces display
Ratio.It can realize that details are not described herein again by the method for existing any conventional about whether the display is saturated.
In an embodiment of the present embodiment, in order to be compatible with current light quantity detection method, namely not to light quantity mesh
The case where scale value is demarcated, the method for the present embodiment can also include the following steps: before step 702
Judge whether to have demarcated light quantity target value；
If the judgment is Yes, 702 are thened follow the steps, to value for the projection quantity and/or is come from according to preset light quantity target value
The light quantity of the reflected light of target detection thing is adjusted by the gain of light；
If the judgment is No, then it is adjusted according to the light quantity of the reflected light from the target detection thing to by the gain of light
It is whole.
By present embodiment, in the case where no calibration light quantity target value, due to according to step 701 to value for the projection quantity into
It has gone adjustment, and has been adjusted according to the light quantity of the reflected light from the target detection thing to by the gain of light, it equally can be with
The gap pulled open between detecting signal and background signal is played, so that decision threshold has between spotting value and background light output
Certain safe ampleness difference, even the effect for stablizing detection of object also may be implemented in the case where having powerful connections interference.
Fig. 8 is the schematic diagram of the another embodiment of the light quantity scaling method of the present embodiment, as shown in figure 8, this method
Include:
Step 801: initialization process；
Step 802: the detection of target detection thing light quantity；
Step 803: the judgement of light income power；
Step 804: if it is determined that strong namely light saturation, then light projector of decaying；
Step 805: if it is determined that weak namely light unsaturation, then enhance light projector；
Step 806: judging whether to have demarcated light quantity target value, if the judgment is Yes, then follow the steps 807, otherwise execute
Step 811；
Step 807: judging whether light quantity difference is reasonable；If the judgment is Yes, 811 are thened follow the steps, it is no to then follow the steps
808；
Step 808: judging whether the light quantity of background reflected light is greater than or equal to the light quantity of the reflected light of target detection thing；
Step 809: if the judgment is Yes, then light projector of decaying；
Step 810: if the judgment is No, then enhancing light projector；
Step 811: the judgement of light income power；
Step 812: if it is determined that strong namely light saturation, then reduce by the gain of light；
Step 813: if it is determined that weak namely light unsaturation, then increase by the gain of light；
Step 814: judging whether to have demarcated light quantity target value, if the judgment is Yes, then follow the steps 815, otherwise execute
Step 819；
Step 815: judging whether display is saturated；
Step 816: if the judgment is Yes, namely display saturation, then reduce display scale；
Step 817: if the judgment is No, namely display unsaturation, then increase display scale；
Step 818: demarcating successfully；
Step 819: setting decision threshold automatically.
In the present embodiment, the initialization process of step 801 is the general processing step of Photoelectric Detection, specific first
Beginning mode and content can refer to the prior art, and details are not described herein again.The processing of step 802- step 819 is in front
It is described in embodiment, details are not described herein again.
Fig. 9 is that the relationship of light income and threshold value illustrates schematic diagram under the conditions of having powerful connections before light quantity is demarcated.As shown in figure 9,
Before light quantity calibration, due to the fluctuation of the effect or recognizate that have powerful connections, the generation of sensor detection malfunction is caused.
Figure 10 is shown before light quantity calibration with the relationship comparative illustration of light income and threshold value after light quantity calibration under the conditions of having powerful connections
It is intended to.As shown in Figure 10, after light quantity calibration, the zero point on the basis of can freely demarcating under the conditions of background light output, i.e. sensor are examined
Out less than critical point, on this basis, by the way that value for the projection quantity and/or by the control of the gain of light, output signal is freely demarcated
Target position has been arrived, in this way, having pulled open the gap between detecting signal and background signal, has allowed decision threshold in calibration
There is certain safe ampleness difference between light quantity target value and background light output, accordingly even when being in the case where having powerful connections interference
Object may be implemented stablizes detection.
After method through this embodiment demarcates light quantity, the detection of recognizate can be carried out.
It is worth noting that, only each step related to the present invention or process are illustrated above, but the present invention is not
It is limited to this.This method can also include other steps perhaps particular content of the process about these steps or process, Ke Yican
Examine the prior art.
Method through this embodiment, increase object detection background reflection between light quantity difference away from, it is ensured that movement
There are enough safe differentials away from the light quantity for realizing background inhibition is demarcated between level and decision threshold.
Embodiment 2
A kind of light quantity caliberating device is present embodiments provided, the side of the principle and embodiment 1 that solve the problems, such as due to the device
Method is similar, wherein content same as Example 1 is not repeated to illustrate.
Figure 11 is the schematic diagram of the light quantity caliberating device 1100 of the present embodiment, and as shown in figure 11, which includes:
One adjustment unit 1101, second adjustment unit 1102 and display unit 1103.The first adjustment unit 1101 is examined according to from target
The light quantity for surveying the reflected light of object is adjusted value for the projection quantity；Second adjustment unit 1102 is according to preset light quantity target value pair
The light quantity of value for the projection quantity and/or the reflected light from target detection thing is adjusted by the gain of light；Display unit 1103 shows institute
State the corresponding signal of light quantity target value.
In the present embodiment, by controlling the light quantity (value for the projection quantity) emitted to recognizate (target detection thing) and detecting reflection
Light quantity (light income), carries out the tuning of light quantity, so that the intensity for the light quantity for reflecting and being detected by a sensor by recognizate can
To be calibrated in the range of an anticipation, even if Lai Shixian sensor similarly can be steady in the state of having powerful connections reflected light
Surely recognizate is detected.
Figure 12 is the schematic diagram of an embodiment of the first adjustment unit 1101 of the present embodiment, as shown in figure 12, should
The first adjustment unit 1101 may include:
First detection unit 1201 carries out light quantity detection to target detection thing, obtains the reflection from target detection thing
The light quantity of light；And
First optical-projection control circuit 1202 increases value for the projection quantity when the light income is less than first threshold；It is described by
When light quantity is greater than second threshold, value for the projection quantity of decaying.Here, first threshold and second threshold can be same namely the two can
With equal；Being also possible to different namely the two can be unequal, specifically can be set as needed.
Figure 13 is the schematic diagram of an embodiment of the second adjustment unit 1102 of the present embodiment, as shown in figure 13, should
Second adjustment unit 1102 may include:
Determination unit 1301 determines light quantity difference according to preset light quantity target value；
Second optical-projection control circuit 1302, the light quantity difference not in the reasonable scope when, then according to from background
The light quantity of the light quantity of reflected light and the reflected light from target detection thing is adjusted value for the projection quantity；And
First light gain control circuit 1303, the light quantity difference in the reasonable scope or not in the reasonable scope
When, it is adjusted according to the light quantity of the reflected light from the target detection thing to by the gain of light.
In the present embodiment, as shown in figure 13, which can also include:
Second detection unit 1304 carries out light quantity detection to target detection thing, obtains the reflection from target detection thing
The light quantity of light；The first light gain control circuit 1303 can increase light and increase when the light income is less than third threshold value as a result,
Benefit；When the light income is greater than four threshold values, reduce by the gain of light.Here, third threshold value and the 4th threshold value can be same,
Namely the two can be equal；Being also possible to different namely the two can be unequal, specifically can be set as needed.Also,
The third threshold value and the 4th threshold value can be equal or different with pre-determined first threshold and second threshold, are specifically dependent upon needs.
In the present embodiment, as shown in figure 13, which can also include:
Third detection unit 1305 carries out light quantity detection to background and target detection thing, obtains the reflection from background
The light quantity of the light quantity of light and the reflected light from target detection thing；The second optical-projection control circuit 1302 can be from back as a result,
When the light quantity of the reflected light of scape is greater than or equal to the light quantity of the reflected light from target detection thing, value for the projection quantity of decaying；From back
When the light quantity of the reflected light of scape is less than the light quantity of the reflected light from target detection thing, increase value for the projection quantity.
Figure 14 is the schematic diagram of an embodiment of the display unit 1103 of the present embodiment, as shown in figure 14, the display
Unit 1103 may include:
First judging unit 1401, judges whether display is saturated；And
Output and display circuit 1402 increase display scale when being displayed without saturation；When display is excessively saturated,
Reduce display scale.
In the present embodiment, as shown in figure 11, which can also include:
Second judgment unit 1104 judges whether to have demarcated light quantity target value；And
Second light gain control circuit 1105, can be when second judgment unit 1104 be judged as NO, according to coming from
The light quantity of the reflected light of the target detection thing is adjusted to by the gain of light；Also, second adjustment unit 1102 can be
When two judging units 1104 are judged as YES, target detection thing to value for the projection quantity and/or is come from according to preset light quantity target value
The light quantity of reflected light be adjusted by the gain of light.
In the present embodiment, above-mentioned the first adjustment unit 1101, second adjustment unit 1102, display unit 1103, second
Judging unit 1104, first detection unit 1201, determination unit 1301, second detection unit 1304, third detection unit 1305,
And first judging unit 1401, it can be realized by controller and memory, that is, storage is in memory for realizing upper
The program of the function of unit is stated, controller realizes the function of said units by executing the program.
In addition, in the present embodiment, above-mentioned first optical-projection control circuit 1202 and the second optical-projection control circuit 1302 can be with
Realized by the same optical-projection control circuit, the present embodiment to concrete implementation mode with no restriction.
In addition, in the present embodiment, the first light gain control circuit 1303 and the second light gain control circuit
1105 can be by the same light gain control circuit, also, the light gain control circuit can be level-one, be also possible to
Multistage, the present embodiment to concrete implementation mode with no restriction.
Device through this embodiment, increase object detection background reflection between light quantity difference away from, it is ensured that movement
There are enough safe differentials away from the light quantity for realizing background inhibition is demarcated between level and decision threshold.
Embodiment 3
A kind of photodetector system is present embodiments provided, the side of the principle and embodiment 1 that solve the problems, such as due to the system
Method is similar, wherein content same as Example 1 is not repeated to illustrate.
Figure 15 is the schematic diagram of the photodetector system 1500 of the present embodiment, as shown in figure 15, the photodetector system
1500 include: sensor 1501, controller 1502, optical-projection control circuit 1503, light gain control circuit 1504 and output
Display circuit 1505.
In the present embodiment, sensor 1501 is used to project transmitting light to target detection thing, and receives from target detection thing
Reflected light may include a light projector and a light-receiving device, can also include other general components, details are not described herein again.
In the present embodiment, controller 1502 is used to be emitted according to 1503 at tos to of fader control optical-projection control circuit of reflected light
The light quantity of light is adjusted, and the light quantity of 1503 pairs of optical-projection control circuit transmitting light is controlled according to preset light quantity target value
It is adjusted, and/or, control light gain control circuit 1504 is adjusted to the light quantity of reflected light by the gain of light.Specifically
, which may be implemented the first adjustment unit 1101 of embodiment 2, second adjustment unit 1102, display unit
1103, second judgment unit 1104, first detection unit 1201, determination unit 1301, second detection unit 1304, third detection
The function of unit 1305 and the first judging unit 1401, content are incorporated in this, and details are not described herein again.
In the present embodiment, optical-projection control circuit 1503 be used for according to the control of controller 1502 to the light quantity of transmitting light into
Row adjustment.Light gain control circuit 1504 be used for according to the control of controller 1502 to the light quantity of reflected light by the gain of light into
Row adjustment；And the light gain control circuit 1504 can be level-one, is also possible to multistage, multistage also can be thus achieved
Gain control.Output display circuit 1505 is for exporting the corresponding electric signal of display light quantity target value.
It is worth noting that, only each component related to the present invention or module are illustrated above, but the present invention is not
It is limited to this.System 1500 can also include that perhaps module, can be with about these components or the particular content of module for other component
With reference to the relevant technologies.
Device through this embodiment, increase object detection background reflection between light quantity difference away from, it is ensured that movement
There are enough safe differentials away from the light quantity for realizing background inhibition is demarcated between level and decision threshold.
The embodiment of the invention also provides a kind of computer-readable programs, wherein when executing institute in photodetector system
When stating program, described program makes the photodetector system execute method described in embodiment 1.
The embodiment of the invention also provides a kind of storage mediums for being stored with computer-readable program, wherein the calculating
Machine readable program makes photodetector system execute method described in embodiment 1.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, wherein
The step of 1 the method for embodiment is realized when the computer program is executed by processor.
The device and method more than embodiment of the present invention can be by hardware realization, can also be by combination of hardware software realization.
The present embodiments relate to such computer-readable programs can make the logic when the program is performed by logical block
Component realizes devices described above or component parts, or the logical block is made to realize various method or steps described above.
The embodiment of the present invention further relates to the storage medium for storing procedure above, such as hard disk, disk, CD, DVD, flash memory
Deng.
The software mould that hardware can be embodied directly in conjunction with the method, device that the embodiment of the present invention describes, executed by processor
Block or both combination.For example, the one or more of one or more of functional block diagram and/or functional block diagram shown in Figure 11
It combines (for example, sending module and receiving module etc.), both can correspond to each software module of computer program process, and also might be used
To correspond to each hardware module.These software modules can correspond respectively to each step shown in Fig. 7.These hardware moulds
These software modules are for example solidified using field programmable gate array (FPGA) and are realized by block.
Software module can be located at RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, post
Storage, hard disk, mobile disk, CD-ROM or any other form known in the art storage medium.One kind can be deposited
Storage media is coupled to processor, to enable a processor to from the read information, and can be written to the storage medium
Information；Or the storage medium can be the component part of processor.Pocessor and storage media can be located in ASIC.This is soft
Part module can store in the memory of equipment, also can store in the storage card that can be inserted into equipment.For example, if equipment is adopted
It is the MEGA-SIM card of larger capacity or the flash memory device of large capacity, then the software module is storable in the MEGA-SIM
In the flash memory device of card or large capacity.
It is combined for one or more of function box described in attached drawing and/or the one or more of function box,
It can be implemented as general processor for executing function described by the embodiment of the present invention, digital signal processor (DSP), dedicated
Integrated circuit (ASIC), field programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor
Logical device, discrete hardware components or it is any appropriately combined.For one or more of the function box of attached drawing description
And/or one or more combinations of function box, it is also implemented as calculating the combination of equipment, for example, DSP and microprocessor
Combination, multi-microprocessor communicate the one or more microprocessors or any other this configuration combined with DSP.
Combining specific embodiment above, invention has been described, it will be appreciated by those skilled in the art that this
A little descriptions are all exemplary, and are not limiting the scope of the invention.Those skilled in the art can be according to the present invention
Spirit and principle various variants and modifications are made to the present invention, these variants and modifications are also within the scope of the invention.
Claims (10)
1. a kind of light quantity caliberating device, wherein described device includes:
The first adjustment unit is adjusted value for the projection quantity according to the light quantity of the reflected light from target detection thing；
Second adjustment unit, according to preset light quantity target value to value for the projection quantity and/or from the reflection of target detection thing
The light quantity of light is adjusted by the gain of light；
Display unit shows the corresponding signal of the light quantity target value.
2. the apparatus according to claim 1, wherein the first adjustment unit includes:
First detection unit carries out light quantity detection to target detection thing, obtains the light quantity of the reflected light from target detection thing；
First optical-projection control circuit increases value for the projection quantity when the light income is less than first threshold；It is greater than in the light income
When second threshold, value for the projection quantity of decaying.
3. the apparatus according to claim 1, wherein second adjustment unit includes:
Determination unit determines light quantity difference according to preset light quantity target value；
Second optical-projection control circuit, the light quantity difference not in the reasonable scope when, then according to the reflected light from background
The light quantity of light quantity and the reflected light from target detection thing is adjusted value for the projection quantity；
First light gain control circuit, the light quantity difference in the reasonable scope or not in the reasonable scope when, according to
The light quantity of reflected light from the target detection thing is adjusted to by the gain of light.
4. device according to claim 3, wherein the second adjustment unit includes:
Second detection unit carries out light quantity detection to target detection thing, obtains the light quantity of the reflected light from target detection thing；
The first light gain control circuit is increased when the light income is less than third threshold value by the gain of light；It is described by
When light quantity is greater than four threshold values, reduce by the gain of light.
5. device according to claim 3, wherein the second adjustment unit includes:
Third detection unit carries out light quantity detection to background and target detection thing, obtains the light quantity of the reflected light from background
With the light quantity of the reflected light from target detection thing；
Second optical-projection control circuit is greater than or equal in the light quantity of the reflected light from background from the anti-of target detection thing
When penetrating the light quantity of light, value for the projection quantity of decaying；It is less than the reflected light from target detection thing in the light quantity of the reflected light from background
When light quantity, increase value for the projection quantity.
6. the apparatus according to claim 1, wherein the display unit includes:
First judging unit, judges whether display is saturated；
Output and display circuit increase display scale when being displayed without saturation；When display is excessively saturated, display is reduced
Ratio.
7. the apparatus according to claim 1, wherein described device further include:
Second judgment unit judges whether to have demarcated light quantity target value；
Second light gain control circuit, when the second judgment unit is judged as NO, according to from the target detection
The light quantity of the reflected light of object is adjusted to by the gain of light；
The second adjustment unit when the second judging unit judges yes, according to preset light quantity target value to throwing
The light quantity of light quantity and/or the reflected light from target detection thing is adjusted by the gain of light.
8. a kind of light quantity scaling method, wherein the described method includes:
Value for the projection quantity is adjusted according to the light quantity of the reflected light from target detection thing；
According to preset light quantity target value to value for the projection quantity and/or the light of the light quantity of the reflected light from target detection thing increase
Benefit is adjusted；
Show the corresponding signal of the light quantity target value.
9. a kind of photodetector system, wherein the system comprises:
Sensor projects transmitting light to target detection thing, and receives reflected light from target detection thing；
Controller is adjusted according to light quantity of the fader control optical-projection control circuit of the reflected light to the transmitting light,
And the optical-projection control circuit is controlled according to preset light quantity target value, the light quantity of the transmitting light is adjusted, and/
Or, control light gain control circuit being adjusted by the gain of light to the light quantity of the reflected light；
Optical-projection control circuit is adjusted according to light quantity of the control of the controller to the transmitting light；
Light gain control circuit, according to the control of the controller being adjusted by the gain of light to the light quantity of the reflected light
It is whole；
Output display circuit, output show the corresponding signal of the light quantity target value.
10. system according to claim 9, wherein the light gain control circuit is one or more levels.
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| CN201810251572.5A CN110361041B (en) | 2018-03-26 | 2018-03-26 | Light quantity calibration method, device and system |
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| CN201810251572.5A CN110361041B (en) | 2018-03-26 | 2018-03-26 | Light quantity calibration method, device and system |
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