CN107690218B - A kind of signal lamp working condition detection system and method - Google Patents
A kind of signal lamp working condition detection system and method Download PDFInfo
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- CN107690218B CN107690218B CN201710774141.2A CN201710774141A CN107690218B CN 107690218 B CN107690218 B CN 107690218B CN 201710774141 A CN201710774141 A CN 201710774141A CN 107690218 B CN107690218 B CN 107690218B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
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Abstract
The present invention relates to electronic technology field, a kind of signal lamp working condition detection system and method are disclosed, for solving the problems, such as that signal lamp detection is easy to appear missing inspection and erroneous detection.This method are as follows: the first optical signal of setting ratio in the optical signal that acquisition signal lamp integrally issues, and the first signal strength of first optical signal is detected, the current working condition of signal lamp is finally determined according to the first signal strength.In this way, it can be under the premise of not influencing signal lamp normal luminous, globality acquisition is carried out for the first optical signal of the optical signal that lamp beads all in signal lamp issue, so as to avoid the working condition only to individual lamp beads is determined and causes the case where judging by accident to the overall work state generation of signal lamp, the accuracy of signal lamp working condition judgement is effectively increased, while also extending the service life of signal lamp.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of signal lamp working condition detection systems and method.
Background technique
Traffic signal control system must have higher reliability and stability, otherwise can cause traffic accident.Therefore
Generally equipped with the abnormal detector to traffic lights in traffic signal control system, avoid causing because of signal lamp exception defeated
Red conflict (crossing all directions are that red light is bright), green conflict (it is green light that direction is closed at crossing), light-off trouble light etc. are asked out
Topic.
Since the current traffic lights overwhelming majority is heavy-current control signal lamp, each signal lamp light color has independent lamp
Line, therefore now for the detection method of signal lamp output, it is the voltage and current detected on corresponding lamp line, passes through voltage value
Speculate that signal lamp lights situation with current value.
However, the case where above detection method can only go out the illuminating state of signal lamp with certain Probability Detection, and there are erroneous detections.
For example, not shining when signal lamp lamp cap LED is damaged, the characteristic or power outputting section for showing resistive load have short circuit
The case where, there may also be voltage and current on the lamp line of signal lamp, but signal lamp shines there is no normal at this time.Meanwhile
During site operation, often there is a connection of " the more lamps of a line ", i.e. in an output channel, more signal lamps in parallel, when
When part of signal lamp exception, failure is also unable to judge accurately by way of detection voltage, electric current.Further, since signal
The huge number of lamp, electric current of every kind of signal lamp when working properly are all different, which also results in signal lamp erroneous detection.
Using the detection method of voltage, electric current, the detection to signal lamp secretly bright situation also cannot achieve, and signal lamp is bright
Degree not enough, be easy to cause the erroneous judgement of vehicle operator, it is also possible to lead to a disaster.
In view of the foregoing drawbacks, have to propose in document at present and realize that the method to signal lamp output detection adds using light detection
To solve, this method realizes the detection exported to signal lamp by the luminance of detection several lamp beads of signal lamp.
But this method also has serious problem:
1, it can not be lighted or dark bright when detected lamp bead is abnormal, and other lamp beads are in normal luminous, it can't shadow
Traffic is rung, is not needed to report as failure, and this problem determination can be failure by this method.
It 2, is at this time serious failure when detected lamp bead is lighted, and other lamp beads are abnormal, and this method judges
It is normal for signal lamp.
3, when happening for above two, judge that red green conflict has serious problem using this method, it is easy to
There is red conflict, the missing inspection of green conflict and erroneous detection；
4. this method needs external optical fiber and convex lens, and the placement position of convex lens and optical fiber requires harshness, causes to give birth to
It is relatively complicated to produce manufacturing process, while reliability is not high.
Summary of the invention
The embodiment of the present application provides a kind of signal lamp working condition detection system and method, solves and detects in the prior art
When signal lamp, only part lamp bead is detected, can not be judged according to the luminance of signal lamp entirety signal lamp currently
Working condition, the problem of being easy to appear missing inspection and erroneous detection.
Specific technical solution provided by the embodiments of the present application is as follows:
A kind of signal lamp working condition detection system includes at least the first light collection equipment, the first light sensing device and place
Manage device, in which:
First light collection equipment, the side opposite positioned at signal lamp set ratio in the optical signal for issuing signal lamp
First optical signal of example reflexes to the first designated position；
First light sensing device is connected with the processor, for detecting the first light letter in the first designated position
Number, determine the first signal strength of first optical signal；
Processor determines the current working condition of the signal lamp according to first signal strength.
Optionally, the first light collection equipment is toroidal lens or Fresnel Lenses；Wherein, the toroidal lens or phenanthrene
Anti-reflective coating is provided on the reflecting surface of Nie Er lens.
Optionally, comprising: the first convex lens is located at first specified location, for making to first optical signal
It further focuses, and the first optical signal after aggregation is sent to first light sensing device.
Optionally, the color of first convex lens is consistent with signal lamp color.
Optionally, first light sensing device is used for:
Detect the optical signal in first optical signal within the scope of the first preset wavelength, wherein the first default wave
Long range is consistent with the wave-length coverage for the optical signal that the signal lamp issues.
Optionally, comprising:
Second light collection equipment is transmitted for acquiring current environment light, and by the second optical signal of the current environment light
To the second designated position；
Second light sensing device is connected with the processor, for detecting described second in second designated position
Optical signal determines the second signal intensity of second optical signal, and the second signal intensity is sent to the processing
Device.
Optionally, second light sensing device is also used to:
In second optical signal, the rinforzando optical signal of signal strength within the set duration is filtered out, or/and,
Filter out the optical signal except the second preset wavelength range, wherein the second preset wavelength range and described first is preset
Wave-length coverage is completely overlapped or partly overlaps.
Optionally, the second light collection equipment is the second convex lens, for acquire the second light collection equipment
Second optical signal further focuses to second designated position.
Optionally, the processor is used for:
According to the second signal intensity, multiple signal strength sections are set, wherein each signal strength section with it is described
The working condition of signal lamp has corresponding relationship；
According to the signal strength section that first signal strength belongs to, the current working condition of the signal lamp is determined.
The application also provides a kind of signal lamp working state detecting method, comprising:
First optical signal of setting ratio in the optical signal of signal lamp sending is reflexed into the first designated position；
First optical signal is detected in first designated position, determines that the first signal of first optical signal is strong
Degree；
The current working condition of the signal lamp is determined according to the first signal strength.
Optionally, the first optical signal of setting ratio in the optical signal of signal lamp sending is reflexed into the first designated position,
Include:
One toroidal lens or Fresnel Lenses are set in the side of signal lamp, and in the toroidal lens or Fresnel Lenses
Reflecting surface do increasing inverse processing, first optical signal is reflexed to first by the toroidal lens or Fresnel Lenses and is specified
Position.
Optionally, further includes:
The first convex lens is set in first specified location, by first convex lens by first optical signal
Make further to focus.
Optionally, the color of first convex lens of use is consistent with signal lamp color.
Optionally, comprising:
Detect the optical signal in first optical signal within the scope of the first preset wavelength, wherein the first default wave
Long range is consistent with the wave-length coverage for the optical signal that the signal lamp issues.
Optionally, further includes:
Current environment light is acquired, and the second optical signal of the current environment light is sent to the second designated position；
Second optical signal is detected in second designated position, determines that the second signal of second optical signal is strong
Degree.
Optionally, from second optical signal, the rinforzando optical signal of signal strength within the set duration is filtered out,
Or/and filter out optical signal except the second preset wavelength range, wherein the second preset wavelength range and described
One preset wavelength range is completely overlapped or partly overlaps.
Optionally, the current working condition of the signal lamp is determined according to first signal strength, comprising:
According to the second signal intensity, multiple signal strength sections are set, wherein each signal strength section with it is described
The working condition of signal lamp has corresponding relationship；
According to the signal strength section that first signal strength belongs to, the current working condition of the signal lamp is determined.
In the embodiment of the present application, the first optical signal of setting ratio in the optical signal that acquisition signal lamp integrally issues, and examine
The first signal strength of first optical signal is surveyed, the current working condition of signal lamp is finally determined according to the first signal strength.
In this way, can be under the premise of not influencing signal lamp normal luminous, for the of the optical signal that lamp beads all in signal lamp issue
One optical signal carries out globality acquisition, therefore, even if extremely individual lamp bead damages occurs in signal lamp, still can integrally send out in signal lamp
In the case where light, system still can be determined that signal lamp is in normal luminous state, so as to avoid the work only to individual lamp beads
Determined as state and cause the case where judging by accident to the overall work state generation of signal lamp, effectively increases signal lamp
The accuracy that working condition determines, while also extending the service life of signal lamp.On the other hand, pass through in the embodiment of the present invention
The lampshade of particular result can complete the acquisition of the first optical signal of signal lamp, this not only reduces device the space occupied,
Implementation complexity is also reduced simultaneously, and then has saved cost of implementation, is suitable for promoting in a wide range of.
Detailed description of the invention
Fig. 1 is the first structural schematic diagram that the system of signal lamp working condition is detected in the embodiment of the present application；
Fig. 2 is the structural schematic diagram of the first light collection equipment in the embodiment of the present application；
Fig. 3 is the first light collection equipment operation principle schematic diagram in the embodiment of the present application；
Fig. 4 is the operation principle schematic diagram of the first convex lens in the embodiment of the present application；
Fig. 5 is second of structural schematic diagram that the system of signal lamp working condition is detected in the embodiment of the present application；
Fig. 6 is the circuit theory schematic diagram of processor in traffic lights detection system in the embodiment of the present application；
Fig. 7 is the flow diagram detected in the embodiment of the present application to signal lamp working condition.
Specific embodiment
The embodiment of the present application provides a kind of signal lamp working condition detection system and method, solves and detects in the prior art
When signal lamp, only part lamp bead is detected, can not be judged according to the luminance of signal lamp entirety signal lamp currently
Working condition, the problem of being easy to appear missing inspection and erroneous detection.
Technical solution in the embodiment of the present application is to solve the above problems, general thought is as follows:
In the embodiment of the present application, due to the first light collection equipment be to signal lamp issue setting ratio part signal into
Row acquisition, is to be acquired to the optical signal of signal lamp entirety, then sends collected first optical signal to first again
First optical signal received is converted electric signal, i.e. the first signal strength by light sensing device, the first light sensing device.
Last processor judges that the first signal strength belongs to that Target Signal Strength section, and different signal strength sections is corresponding not
Same signal lamp state, thereby determines that the working condition of current signal light.It adopts this technical solution, it can be with effective address signal lamp
The technical issues of missing inspection and erroneous detection.
In order to better understand the above technical scheme, below in conjunction with Figure of description and specific embodiment to above-mentioned
Technical solution is described in detail, it should be understood that the specific features in the embodiment of the present application and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
The signal lamp working condition detection system (hereinafter referred to as system) provided in the embodiment of the present application is mainly used in
Traffic signal light fault detection, such as the traffic light of common traffic route crossroad, below with the red green letter at crossing
Illustrate for signal lamp, the first light collection equipment refers to the lampshade of traffic lights, and traffic light to be detected is by several lamp bead groups
At.
As shown in fig.1, the specific framework of system is as follows in the embodiment of the present application, include at least:
First light collection equipment 12, positioned at the side of signal lamp, the light for issuing entire signal lamp lamp bead is by setting
First optical signal of ratio reflexes to the first designated position.
Optionally, first designated position is the focal position focused after first optical signal reflects, can be letter
The middle part of signal lamp, the embodiment of the present application are not particularly limited.
First light sensing device 13, is connected with processor 14, for receiving the first light letter in the first designated position
Number, and determine the first signal strength of first optical signal, first signal strength is sent to the processor 14.
Optionally, first light sensing device 13 is located at the first specified location, and the first light sensing device 13 is at least wrapped
Photodiode, phototriode, photomultiplier tube etc. are included, the first optical signal for focusing the first light collection equipment 12 turns
It is changed to electric signal, and detects the signal strength of the electric signal, is i.e. the first signal strength.
Processor 14 determines the current work shape of signal lamp according to the first signal strength that the first light sensing device 13 detects
State.
Specifically, processor 14 can determine the Target Signal Strength section of the first signal strength ownership received, and
With reference to the corresponding relationship between preset signal strength section and signal lamp working condition, based on described in the determination of the first signal strength
The current working condition of signal lamp.
About the setting in signal strength section, will be explained in detail in subsequent embodiment.
Optionally, the first light collection equipment 12 can use toroidal lens or Fresnel Lenses.
By taking Fresnel Lenses as an example, as shown in fig.2, the reflecting surface in Fresnel Lenses 21 has one layer of Anti-reflective coating 22,
In the embodiment of the present application, it directly can regard Fresnel Lenses 21 as lampshade, be reflected by a certain percentage by Fresnel Lenses 21
The first optical signal meeting focal length back is received in any convenient for the first light sensing device 13, on the other hand, 21 energy of Fresnel Lenses
Enough enable transmitted light parallel with the light that lamp panel is issued, guarantees that the luminance of signal lamp is unaffected.
Concrete principle of the Fresnel Lenses 21 as the first light collection equipment 12 acquisition optical signal, as shown in figure 3, LED light
The light that pearl issues, is irradiated to after the lampshade made of Fresnel Lenses 21, since the effect of Anti-reflective coating 22 can make portions incident
Light reflects, and the Fresnel Lenses that is negative on the inside of lampshade, and similar with the characteristic of concave mirror, which can make portion
Point reflected light focuses on its focus.After the emergent light of LED lamp bead is irradiated to lampshade, in addition to part light can be by reflection, there are also a large amount of
Light can be used as transmitted light through lampshade, since lampshade inside is negative Fresnel Lenses, outside is positive Fresnel Lenses, because
This, relative to lampshade, transmitted light is parallel with the optical propagation direction that LED lamp bead issues.Simultaneously because transmitted light light quantity accounts for LED lamp bead
Issue the overwhelming majority of light quantity, the presence of reflected light will not the illumination effect final to signal lamp impact.
Optionally, as shown in figure 4, in the first specified location, the first convex lens 41 is set.First convex lens 41 can have
Body is located at the near focal point of Fresnel Lenses 21, and the first convex lens 41 can make the first optical signal further to focus, after aggregation
First optical signal and signal lamp Integral luminous intensity are proportional.There is the first light sensing device 13 after the first convex lens 41,
The light assembled by the first convex lens 41 can be converted to electric signal by the first light sensing device 13, and give electric signal to the place
Manage device 14.
Optionally, in order to further increase detection accuracy, the first convex lens 41 can select colored lens, selection
Color it is consistent with signal lamp color.
Such as: if signal lamp lamp cap is red light, the first convex lens 41 selects red convex lens, red convex lens meeting
Targetedly red light is focused, other color of light can be absorbed by red convex lens, to reduce extraneous complex illumination ring
Influence of the border to signal lamp abnormality detection.
Optionally, the first light sensing device 13 is specifically used for: in the first optical signal of detection within the scope of the first preset wavelength
Optical signal, the first preset wavelength range is consistent with the wave-length coverage of first optical signal.Why, the first light is set
Detection device 13 is detected just for the optical signal within the scope of the first preset wavelength, can effectively reduce complex illumination environment
It influences, convenient for obtaining the first more accurate signal strength during subsequent detection.
For example, it is assumed that signal lamp lamp cap is red light, then the first light sensing device 13 is only to the red light in the first optical signal
Detection processing is carried out, i.e. the first preset wavelength range is consistent with the wave-length coverage of red light.
On the other hand, as shown in fig.4, can be set the first light detection if not set first convex lens 41 in system
Standby 13 are placed on the first focal point of Fresnel Lenses 21, i.e., using first focal point as the first designated position；And if system
In be provided with the first convex lens 41, then the first light sensing device 13 can be placed on second burnt after the first convex lens 41 focuses
At point, i.e., using second focal point as the first designated position.
Optionally, in order to remain to the working condition of accurate judgement signal lamp under different environment illumination intensities, further
Ground also increases the equipment detected to current environment light environment, as shown in fig.5, in system further include:
Second light collection equipment 51, positioned at the side of signal lamp, and with the first light collection equipment 12 be located at it is not ipsilateral, be used for
Current environment light is acquired, and the second optical signal of current environment light is sent to the second designated position；It should be noted that be a bit:
Second light collection equipment 51 cannot be located at the luminous side of signal lamp.
For example, as shown in figure 5, the second light collection equipment 51 is located at the back side of signal lamp lamp bead in the embodiment of the present application,
Two light collection equipment 51 can assemble environment light, and the focus after aggregation is the second designated position, and refer to second
Positioning is set provided with the second light sensing device 52.
Second light sensing device 52, is connected with processor 14, for detecting the second optical signal in the second designated position, really
The second signal intensity of fixed second optical signal, and second signal intensity is sent to processor 14；Wherein, optionally, second
Light collection equipment 52 is the second convex lens, and the second optical signal for acquiring the second light collection equipment 52 further focuses to the
Two designated positions.
Optionally, processor 14 can be based on second signal intensity setting signal intensity interval；Specifically:, processor 14
First threshold and second threshold can be obtained according to second signal intensity and preset environment constant, then, processor 14 can be with
Using first threshold and second threshold as dividing value, multiple signal strength sections corresponding with signal lamp working condition are marked off.
Such as, first interval is the signal strength section less than first threshold, indicates that signal lamp be in light-off state, second interval for greater than
Equal to first threshold and less than or equal to the signal strength section of second threshold, indicate that signal lamp is in dark bright state, 3rd interval
For the signal strength section greater than second threshold, expression signal lamp is normal illuminating state.
Such as: assuming that data 1 (E1) indicate the signal strength for the first optical signal that signal lamp issues, i.e. the first signal is strong
Degree, and 2 (E of data2) indicate environment light the second optical signal signal strength, i.e., above-mentioned second signal intensity；So, according to E1
With E2Contrast judgement semaphore working condition.Specific judgment method is as follows:
(1) it turns off the light and judges.
Light-off makes to refer to that signal lamp can not be lighted completely, or luminous intensity is too weak when lighting is difficult to know so that making one naked eyes
Not.When detecting that E1 is less than first threshold (Emin), it is judged as that signal lamp is in light-off state.
EminValue determined by following formula:
Emin=kE2+a
Wherein, a, k are a constant, which may be with signal lamp shape, and installation site etc. is related.
(2) signal lamp secretly bright state.
Signal lamp is secretly bright to refer to that signal lamp part lamp bead failure or Integral luminous intensity are undesirable, and pedestrian may at this time
The light on and off state of signal lamp is caused to judge by accident, and then accident occurs.When detecting E1Less than or equal to second threshold (Edim) and be greater than
Equal to EminWhen, processor 14 judges that signal lamp is in dark bright state.
EdimValue determined by following formula:
Edim=E2*b+c
Wherein, b and c are constant, may be with signal lamp shape, and the factors such as installation site are related.
(3) judgement of the normal illuminating state of signal lamp.
When detecting E1Greater than EdimWhen, processor 14 judges that signal lamp is in normal illuminating state, wherein EdimValue
See above-mentioned formula.
In the embodiment of the present invention, optionally, 14 processing circuit structure of processor is as shown in Figure 6: electric including at least there is amplification
Road, analog-digital converter (Analog-to-Digital Converter, ADC), main controller and communication interface.
The first optical signal that signal lamp issues is switched to electric signal by the first light sensing device 13, is amplified by amplifying circuit 1
Afterwards, digital signal 1 (data 1) is converted to by ADC1 and gives main controller.Second light sensing device 52 is by external environmental light (the second light
Signal) switch to electric signal, after the amplification of amplifying circuit 2, digital signal 2 (data 2) is converted to by ADC2 and gives main controller.It is main
It controls device and judges that signal lamp whether there is according to the first signal strength of the first optical signal and the second signal intensity of the second optical signal
Extremely, the host and by judging result being sent to by communication interface in traffic signal control system.
Since main controller can get the lamp control signal for being used to indicate and lighting signal lamp and lighting, if main controller is not
It detects lamp control signal, while but detecting that the current working condition of signal lamp is normal illuminating state, then main controller passes through logical
Letter interface directly transmits signal lamp and lights abnormal notification message；And if main controller detects lamp control signal, while but detecting letter
The current working condition of signal lamp is light-off state, then main controller directly transmits the abnormal notice of signal lamp light-off by communication interface and disappears
Breath；And if main controller detects lamp control signal, while but detecting that signal lamp is in dark bright state, then main controller is connect by communication
Mouth directly transmits the dark bright abnormal notification message of signal lamp.
Optionally, the second light sensing device 52 is specifically used for: from current environment light, filtering out signal within the set duration
The rinforzando optical signal of intensity, or/and, filter out the optical signal of the environment light except the second preset wavelength range, wherein the
Two preset wavelength ranges and the overlapping of the first preset wavelength range partly overlap.
Since external environment illumination situation is more complex, signal lamp is made in order to avoid car light or other lighting apparatus occurs
It the case where at influencing, needs to be filtered in the second light sensing device 52.Since signal lamp luminous power sending moment is abnormal
The case where change, is very rare, can be with when being detected in the second optical signal within the set time there are when rinforzando optical signal
Be considered that car light irradiates suddenly or other lighting apparatus irradiate caused environment light suddenly enhances suddenly, should cast out inspection at this time
The rinforzando optical signal measured.
In order to further improve the detection accuracy of environment light, the second light sensing device 52 can also be further pre- second
If detecting the second optical signal in wave-length coverage, that is, filter out the optical signal of the environment light except the second preset wavelength range, wherein
The the second preset wavelength range and the first light sensing device 13 that second light sensing device 52 uses use the first preset wavelength range
It can be set to be overlapped or partly overlap.
Optionally, the second light collection equipment 51 can use the second convex lens, for using to the second light collection equipment 51
The second optical signal make further focus.Such as, the second optical signal can be focused on focal point by the second convex lens, which is
For the second designated position, the second designated position is just arranged in the second light sensing device 52.
Based on the same inventive concept, the embodiment of the present application also provides a kind of signal lamp working state detecting method, by preceding
The detailed description to signal lamp working condition detection system and its various change form is stated, those skilled in the art can be clear
The implementation structure for understanding system described in the present embodiment, so details are not described herein in order to illustrate the succinct of book.
As shown in fig.7, the detailed process of signal lamp working state detecting method is as follows:
Step 701: the first optical signal of setting ratio in the optical signal of signal lamp sending is reflexed into the first designated position.
When executing step 701, optionally, one toroidal lens or Fresnel Lenses can be set in the side of signal lamp,
And increasing inverse processing is done in the reflecting surface of toroidal lens or Fresnel Lenses, the first light is believed by toroidal lens or Fresnel Lenses
Number reflex to the first designated position.
Optionally, the first convex lens can be further set in above-mentioned first designated position, by the first convex lens by
One optical signal is made further to focus.
Optionally, the color of above-mentioned first convex lens of use is consistent with signal lamp color.
Step 702: detecting the first optical signal in above-mentioned first designated position, determine that the first signal of the first optical signal is strong
Degree.
Optionally, it can detecte the optical signal in the first optical signal within the scope of the first preset wavelength, wherein first is default
Wave-length coverage is consistent with the wave-length coverage for the optical signal that signal lamp issues.
Step 703: the current working condition of signal lamp is determined according to the first signal strength.
Optionally, after executing step 702, before executing step 703, current environment can also further be acquired
Light, and the second optical signal of current environment light is sent to the second designated position, and detect the second light in the second designated position
Signal determines the second signal intensity of the second optical signal.
Optionally, the rinforzando optical signal of signal strength within the set duration can be filtered out in the second optical signal,
Or/and filter out optical signal except the second preset wavelength range, wherein the second preset wavelength range and described first pre-
If wave-length coverage is completely overlapped or partly overlaps.
After having executed aforesaid operations, further, when executing step 703, it can be arranged according to second signal intensity more
A signal strength section, wherein the working condition of each signal strength section and the signal lamp has corresponding relationship；Then,
According to the signal strength section that the first signal strength belongs to, the current working condition of signal lamp is determined.
Technical solution in the embodiment of the present invention is determined with the second signal intensity of the second optical signal of current environment light
Signal strength section, reason have following two points:
(1) the first optical signal of the signal lamp detected, it is possible to will receive the influence of the second optical signal, so as to cause accidentally
The case where inspection, missing inspection, occurs, and therefore, it is necessary to introduce the second optical signal, distinguishes in order to refine.
(2) under varying environment illumination condition, human eye is in dark judgement that is bright, turning off the light to signal lamp can be variant, to protect
The detection method that there is provided and eye recognition result are as close possible to needing to introduce the second optical signal in card the embodiment of the present application.
In conclusion in the embodiment of the present application, in the optical signal that the first light collection equipment 12 acquisition signal lamp integrally issues
First optical signal of setting ratio, then the first optical signal is detected by the first light sensing device 13 and determines the first signal strength, finally
Processor 14 determines the current working condition of signal lamp according to the first signal strength.In this way, signal lamp can not influenced
Under the premise of normal luminous, entirety is carried out for the first optical signal of setting ratio in the optical signal of lamp beads all in signal lamp sending
Property acquisition, even if extremely individual lamp beads damage occurs in signal lamp, in the case where signal lamp still can be with Integral luminous, system still may be used
To determine that signal lamp is in normal luminous state, so as to avoid the working condition only to individual lamp beads is determined and is caused pair
The case where overall work state generation of signal lamp is judged by accident, effectively increases the accuracy of signal lamp working condition judgement,
The service life of signal lamp is also extended simultaneously.
On the other hand, the lampshade in the embodiment of the present invention by specific structure can complete the first optical signal of signal lamp
Acquisition, this not only reduces device the space occupied, while also reducing implementation complexity, and then have saved cost of implementation,
Suitable for a wide range of interior popularization.
Further, the first convex lens that the first optical signal for acquiring the first light collection equipment 12 further focuses
41, optical signal can not only more accurately be sent to the first light sensing device 13 to, moreover it is possible to filter off according to the color of itself outer
The interference of boundary's veiling glare further improves the precision of detection.
Further, in the embodiment of the present application, the first light sensing device 13 detects the light within the scope of the first preset wavelength
Signal, and the optical signal of the second light sensing device 52 the second preset wavelength ranges of detection, the first preset wavelength range and letter
First wavelength of optical signal range of signal lamp is identical, and the first preset wavelength range and the second preset wavelength range are set as weight completely
It folds or partly overlaps, in this way, just can further filter off the interference of extraneous veiling glare, improve the accuracy of testing result.
On the other hand, when being worked due to signal lamp in the case where environment light is darker, in fact it could happen that environment light enhances suddenly
The case where, lead to the erroneous judgement to signal lamp working condition, in the embodiment of the present application, the first optical signal that not only signal lamp is issued
It is detected, also the second optical signal of current environment light is detected.Processor 14 can also be according to the of the second optical signal
Multiple signal strength sections are arranged in binary signal intensity, have between each signal strength section and the working condition of signal lamp and correspond to
Relationship, the signal strength section that processor 14 is belonged to according to the first optical signal, the current work of accurate judgement signal lamp
Make state (e.g., dark bright state, OFF state, normal illuminating state etc.), is also more in line with actual demand, avoids erroneous detection.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (15)
1. a kind of signal lamp working condition detection system, which is characterized in that include at least the first light collection equipment, the first light detection
Equipment and processor, wherein
First light collection equipment, the side opposite positioned at signal lamp, setting ratio in the optical signal for issuing signal lamp
First optical signal reflexes to the first designated position；
First light sensing device is connected with the processor, for detecting first optical signal in the first designated position, really
First signal strength of fixed first optical signal；
Processor determines the current working condition of the signal lamp according to first signal strength；
Second light collection equipment is sent to for acquiring current environment light, and by the second optical signal of the current environment light
Two designated positions；
Second light sensing device is connected with the processor, for detecting the second light letter in second designated position
Number, determine the second signal intensity of second optical signal, and the second signal intensity is sent to the processor；Institute
It states processor to be specifically used for: the current work of the signal lamp is determined according to first signal strength and the second signal intensity
Make state.
2. signal lamp working condition detection system as described in claim 1, which is characterized in that the first light collection equipment is
Toroidal lens or Fresnel Lenses；Wherein, Anti-reflective coating is provided on the reflecting surface of the toroidal lens or Fresnel Lenses.
3. signal lamp working condition detection system as described in claim 1 characterized by comprising
First convex lens is located at first specified location, for making further to focus to first optical signal, and will gather
The first optical signal after collection is sent to first light sensing device.
4. signal lamp working condition detection system as claimed in claim 3, which is characterized in that the color of first convex lens
It is consistent with signal lamp color.
5. the described in any item signal lamp working condition detection systems of claim 1-4, which is characterized in that the first light inspection
Measurement equipment is used for:
Detect the optical signal in first optical signal within the scope of the first preset wavelength, wherein the first preset wavelength model
It encloses consistent with the wave-length coverage of optical signal that the signal lamp issues.
6. signal lamp working condition detection system as described in claim 1, which is characterized in that second light sensing device is also
For:
In second optical signal, the rinforzando optical signal of signal strength within the set duration is filtered out, or/and, filtering
Fall the optical signal except the second preset wavelength range, wherein the second preset wavelength range and first preset wavelength
Range is completely overlapped or partly overlaps.
7. signal lamp working condition detection system as described in claim 1, which is characterized in that the second light collection equipment is
Second convex lens, for second optical signal to be focused to second designated position.
8. signal lamp working condition detection system as claimed in claims 6 or 7, which is characterized in that the processor is used for:
Multiple signal strength sections are set according to the second signal intensity, wherein each signal strength section and the signal
The working condition of lamp has corresponding relationship；
According to the signal strength section that first signal strength belongs to, the current working condition of the signal lamp is determined.
9. a kind of signal lamp working state detecting method characterized by comprising
First optical signal of setting ratio in the optical signal of signal lamp sending is reflexed into the first designated position；
First optical signal is detected in first designated position, determines the first signal strength of first optical signal；
The current working condition of the signal lamp is determined according to the first signal strength；
Current environment light is acquired, and the second optical signal of the current environment light is sent to the second designated position；
Second optical signal is detected in second designated position, determines the second signal intensity of second optical signal；
The current working condition of the signal lamp is determined according to first signal strength and the second signal intensity.
10. the signal lamp working state detecting method as described in right wants 9, which is characterized in that the optical signal for issuing signal lamp
First optical signal of middle setting ratio reflexes to the first designated position, comprising:
One toroidal lens or Fresnel Lenses be set in the side of signal lamp, and in the anti-of the toroidal lens or Fresnel Lenses
Increasing inverse processing is done in the face of penetrating, and first optical signal is reflexed to the first specific bit by the toroidal lens or Fresnel Lenses
It sets.
11. signal lamp working state detecting method as claimed in claim 9, which is characterized in that further include:
First specified location be arranged the first convex lens, by first convex lens by first optical signal make into
One step focuses.
12. signal lamp working state detecting method as claimed in claim 9, which is characterized in that first convex lens of use
The color of mirror is consistent with signal lamp color.
13. such as the described in any item signal lamp working state detecting methods of claim 9-12 characterized by comprising
Detect the optical signal in first optical signal within the scope of the first preset wavelength, wherein the first preset wavelength model
It encloses consistent with the wave-length coverage of optical signal that the signal lamp issues.
14. signal lamp working state detecting method as claimed in claim 9, which is characterized in that further include:
From second optical signal, the rinforzando optical signal of signal strength within the set duration is filtered out, or/and, filtering
Fall the optical signal except the second preset wavelength range, wherein the second preset wavelength range and first preset wavelength
Range is completely overlapped or partly overlaps.
15. the signal lamp working state detecting method as described in claim 9 or 10, which is characterized in that according to first letter
Number intensity determines the current working condition of the signal lamp, comprising:
Multiple signal strength sections are set according to the second signal intensity, wherein each signal strength section and the signal
The working condition of lamp has corresponding relationship；
According to the signal strength section that first signal strength belongs to, the current working condition of the signal lamp is determined.
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| CN201710774141.2A CN107690218B (en) | 2017-08-31 | 2017-08-31 | A kind of signal lamp working condition detection system and method |
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| CN111175025B (en) * | 2020-03-26 | 2022-08-09 | 交通运输部北海航海保障中心烟台航标处 | Intelligent detection method and device for lamplight quality of beacon light |
| TW202213290A (en) * | 2020-09-21 | 2022-04-01 | 財團法人資訊工業策進會 | Traffic signal light system, and failure detection device and failure detection method of traffic signal light |
| CN114051093B (en) * | 2021-11-09 | 2024-04-09 | 交通运输部北海航海保障中心烟台航标处 | Portable navigation mark lamp field detection system based on image processing technology |
| CN114152411B (en) * | 2021-11-29 | 2024-07-02 | 神思电子技术股份有限公司 | Signal lamp state detection method and equipment |
| CN114323575B (en) * | 2021-12-03 | 2022-12-02 | 江苏航天大为科技股份有限公司 | Detection and calculation method for brightness attenuation of traffic signal lamp beads |
| CN114563081B (en) * | 2021-12-22 | 2024-05-24 | 高新兴创联科技股份有限公司 | Signal lamp signal identification system and method for resisting light interference |
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| CN203934030U (en) * | 2014-01-08 | 2014-11-05 | 深圳市金路交通设施有限公司 | Energy-saving traffic signal lamp control system |
| CN204791542U (en) * | 2015-07-08 | 2015-11-18 | 郑州职业技术学院 | Traffic signal lamp's energy -saving control circuit |
| CN105206085A (en) * | 2015-10-12 | 2015-12-30 | 安徽工程大学机电学院 | Traffic lamp intelligent fault monitoring and repairing system based on internet of things |
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