CN107351759A - A kind of array light source car light of laser-marking barrier - Google Patents

Abstract

A kind of array light source car light of laser-marking barrier,It includes lamp body and the array light source of internal installation,Car light controller,Camera sensing device,They are electrically connected to each other,It is characterized in that it also has at least one visible light laser emitter device,The range of exposures of the visible light laser emitter device matches in the horizontal direction with corresponding light-illuminating scope,The laser beam of the visible light laser emitter device is parallel with road surface,So the laser beam obviously can be irradiated on road surface on the object of this light overlay area and produce eye-catching hot spot,The position of the hot spot is obviously exactly the position of barrier,So driver is just easy to see Obstacle Position in dark space when subregion irradiates clearly,Object is not easy the problem seen clearly in dark space when the array light source car light for solving prior art implements subregion irradiation,Similarly the hot spot may also help in camera sensing device and road obstacle accurately found in night dark situation,To realize that highlighted irradiation emphasis barrier provides data.

Description

An array light source headlight for laser marking obstacles

technical field

The invention relates to an array light source vehicle lamp for laser marking obstacles, which belongs to the field of vehicle lighting equipment.

Background technique

Existing LED array light source car lights and car lights using other array light sources all have several parts: a lamp body, an array light source, a car light controller, and an obstacle sensor. First, the headlights of this array light source can automatically turn off part of the light source units in the array light source to form a local dark area for vehicles or pedestrians within the light irradiation range, thereby avoiding glare of oncoming vehicles or pedestrians. This is the array light source vehicle. The zoned illumination mode of the lamp. However, there are also obvious problems in the existing partition illumination mode. One is that when the obstacle sensor detects that a person or vehicle appears within the light range, a dark area will be formed immediately, because the response time of the electronic system must be faster than that of humans, causing the car to drive Because of the sudden appearance of the dark area, the driver cannot see the specific situation of the obstacle in the dark area clearly; the second is that if there is another smaller obstacle between the vehicle and the oncoming vehicle or pedestrian, the smaller obstacle will It will also be in the dark area, making it more difficult for the driver to detect this small obstacle in time, and the risk factor will increase significantly. Therefore, it is very necessary for the array light source headlights that adopt the partitioned illumination working mode to effectively illuminate the existence of obstacles in the dark area, but effective illumination needs to increase the brightness of the dark area, but increasing the brightness of the dark area will increase the risk of glare. Lost the meaning of zonal irradiation, forming a pair of difficult contradictions. Second, the existing array light source vehicle lights also have a high-brightness illumination mode that is just opposite to the above-mentioned partition illumination mode. The high-brightness illumination mode means that the light controller firstly controls the opening of the corresponding light source unit in the array light source or increases the illumination brightness of the corresponding light source unit according to the obstacle position data detected by the obstacle sensor, so as to realize the highlighting of key targets. At this time, other light source units are off or in a low-brightness state, so the light pollution of the high-brightness illumination mode is the least, and the advantages are outstanding. At present, the bottleneck in the implementation of the high-brightness illumination mode lies in the obstacle sensor. Among them, the millimeter-wave radar sensor and the thermal imaging sensor can accurately identify the position of obstacles on the road under dark conditions, but the cost is too high and can only be used for experimental demonstration and cannot be commercialized. ; Although the existing camera sensors are cheap, because the monocular camera sensors are all based on the image feature matching recognition principle, and the binocular camera sensors are all based on the image difference comparison recognition principle, these recognition principles must require the camera sensor to be able to shoot at first However, it is difficult for existing camera sensors to clearly capture high-definition images of obstacles in a dark environment, and of course it is impossible to identify them. Therefore, the current high-brightness illumination model cannot use The low-cost advantage of the camera sensor has achieved commercialization.

Contents of the invention

In order to solve the above problems, the present invention provides an array light source vehicle light with laser marking obstacles, which can allow the driver to see clearly the position of obstacles in the dark area when the area is illuminated, and can also allow the camera sensor to detect obstacles on the dark road surface at night. Highlights.

The invention relates to an array light source car lamp for laser marking obstacles, which includes a lamp body and an array light source installed inside, a car lamp controller, and a camera sensor, which are electrically connected to each other, and is characterized in that it has at least one visible light laser emitting device, the irradiation range of the visible light laser emitting device matches the corresponding light irradiation range in the horizontal direction, and the beam of the visible light laser emitting device is parallel to the road surface.

The array light source car light for laser marking obstacles is characterized in that: this product also has at least one non-visible light laser emitting device, the irradiation range of the non-visible light laser emitting device matches the total light irradiation range of the array light source in the horizontal direction, The beam of the non-visible laser emitting device is parallel to the road surface.

The array light source vehicle light for laser marking obstacles is characterized in that: the light source unit of the array light source is equipped with a dedicated visible light laser emitting device, and the irradiation range of the visible light laser emitting device matches the light irradiation range of the light source unit in the horizontal direction , the light source unit and the visible light laser emitting device switch to illuminate each other.

The array light source vehicle light for laser marking obstacles is characterized in that: the visible light laser emitting device is equipped with a beam shaping lens capable of emitting fan-shaped beams parallel to the road surface.

The array light source vehicle lamp for laser marking obstacles is characterized in that: the visible light laser emitting device is equipped with a beam scanning device capable of at least scanning the beam horizontally.

The array light source vehicle light for laser marking obstacles is characterized in that: the visible light laser emitting device is matched with a switch control circuit with an inclination sensor, and the switch control circuit is electrically connected to the laser in the visible light laser emitting device.

The array light source vehicle lamp for marking obstacles with laser is characterized in that: the visible light laser emitting device has a matching optical signal receiving sensor and a signal difference calculation circuit, and they are signally connected to each other.

The beneficial effects of the present invention are as follows: the array light source car lamp for laser marking obstacles includes a lamp body and an array light source installed inside, a car light controller, and a camera sensor, which are electrically connected to each other, and is characterized in that it has at least one A visible light laser emitting device, the irradiation range of the visible light laser emitting device matches the corresponding light irradiation range in the horizontal direction, and the beam of the visible light laser emitting device is parallel to the road surface. In this way, when an oncoming car or pedestrian appears within the light coverage area, the corresponding light source unit in the array light source will automatically turn off, so that a dark area appears in the light area. At this time, since the laser beam irradiation range of the visible light laser emitting device matches the irradiation range of the light in the horizontal direction, and the laser beam is parallel to the road surface, the laser beam can obviously irradiate vehicles or people within the range of the light on the road. Waiting for the obstacle to produce a striking light spot, the position of the light spot is obviously the position of the obstacle, so that the driver can easily see the position of the obstacle in the dark area through the light spot; similarly, because this product can use the visible light The laser emitting device irradiates the obstacles on the road to produce bright light spots, then the camera sensor can capture the light spots, so that the position data of the obstacles shown by the light spots can be obtained through the geometrical optics algorithm, so that the camera sensor can use Due to the implementation of high-brightness irradiation, the purpose of the present invention is fully realized. Obviously, this patent can greatly improve the safety of vehicles and pedestrians, and it is a revolution in vehicle lighting technology.

Description of drawings

Fig. 1 is a schematic diagram of the principle of partitioned illumination in the main viewing direction of the present invention.

Fig. 2 is a schematic diagram of the principle of partitioned illumination in the side view direction of the present invention.

Fig. 3 is a schematic diagram of the principle of highlight illumination in the front view direction of the present invention.

The markings in the figure are as follows: 1. Lamp body, 2. Array light source, 3. Visible light laser emitting device, 4. Beam shaping lens.

detailed description

Figure 1 is a schematic diagram of the principle of the main viewing direction in the partitioned illumination mode. This product includes a lamp body 1 and an array light source 2 installed inside, a car lamp controller, and a camera sensor, which are electrically connected to each other, and is characterized in that it also has at least one visible light laser emitting device 3, and the irradiation The range matches the irradiation range of the corresponding light in the horizontal direction, and the beam of the visible light laser emitting device 3 is parallel to the road surface, as shown in FIG. 2 . Wherein, the visible light laser emitting device 3 adopts a visible light band laser, and the visible light laser emitting device 3 can be installed inside the lamp body 1 or installed separately from the lamp body 1 . When a split structure is adopted, the visible light laser emitting device 3 can be arranged in the middle and lower position of the fog lamp or the bumper of the car. At this time, at least one visible light laser emitting device 3 needs to be installed for each vehicle, and of course multiple visible light laser emitting devices can also be installed. The laser emitting device 3 and they can adopt multiple irradiation modes such as cross irradiation and stacked irradiation, as long as the irradiation range of these visible light laser emitting devices 3 matches the overall light irradiation range of the lamp body 1 in the horizontal direction; it is also possible Inside the lamp body 1, install its own dedicated visible light laser emitting device 3 for all or part of the light source units of the array light source 2, and the irradiation range of the visible light laser emitting device 3 matches the light irradiation range of the light source unit in the horizontal direction At this time, the light source unit and its exclusive visible light laser emitting device 3 can switch each other according to the target properties in its own small irradiation area; of course, only one visible light laser emitting device 3 can be installed in the lamp body 1. At this time, the visible light laser emitting device The overall lighting range of the device 3 and the lamp body 1 matches in the horizontal direction, and the specific structure to be adopted can be determined by the designer according to the product design requirements. It can be seen that the above-mentioned "matching in the horizontal direction" means that the beam of the visible light laser emitting device 3 can irradiate the edge of the corresponding light irradiation range in the horizontal direction or the range meets the design requirements. For example, if the visible light laser is not required in the design requirements The emission device 3 irradiates the light spot on the edge of the light range, and only needs to irradiate the middle area of the corresponding light range to meet the design requirements. At this time, the irradiation range of the visible light laser emission device 3 can be appropriately reduced according to the specific design requirements, which also belongs to A match is achieved. This product can be installed at the front of the vehicle, at the rear of the vehicle for reversing lighting, or on the side of the vehicle for bending lighting, etc.

There are various types of structures of the visible light laser emitting device 3 . For example, a beam shaping lens 4 can be installed in front of the laser in the visible light laser emitting device 3, and the beam shaping lens 4 can adopt structures such as Powell prisms, corrugated mirrors, and cylindrical mirrors. A fan-shaped sheet-shaped beam with a fan center, the beam expands laterally, and the beam plane is parallel to the road surface. This structure has the advantages of all solid state, high reliability, and low cost; the second structural scheme of the visible light laser emitting device 3 is in the visible light A mechanical rotating mechanism is installed in the laser emitting device 3 to drive the laser to rotate, so as to realize the horizontal scanning of the beam. At this time, the scanning plane of the beam can obviously be parallel to the road surface; the third structural scheme of the visible light laser emitting device 3 is on the optical path of the laser Matching installation of beam scanning devices such as vibrating mirrors or mirror drums, using the mechanical movement of the mirrors on the vibrating mirrors or mirror drums to cause lateral deflection of the beams to achieve lateral scanning, and the scanning plane can obviously also be parallel to the road surface. This kind of laser beam parallel to the road surface will obviously irradiate objects such as vehicles and pedestrians on the road surface and produce light spots; the vibrating mirror matched with the visible light laser emission device 3 is a very common modular product in the optical accessories market, and many of them are It has two-dimensional scanning capability, which can be scanned horizontally or vertically. If this two-dimensional vibrating mirror product is used in the implementation of this patent, its vertical scanning capability can be used to adjust the parallelism between the beam plane and the road surface in real time to solve the problem of Road bumps cause beam pitch issues. The latter two types of scanning mechanisms adopted by the visible light laser emitting device 3 are all mechanical structures, which are very mature prior art, and users can directly purchase related components in the market, which are common components familiar to those skilled in the art, so its The specific internal mechanical structure will not be repeated here. The advantage of using a mechanical scanning mechanism is that it can control the scanning line to be lit up and generate reflection spots only when it reaches the dark area, so that the visible light laser emitting device 3 can only irradiate obstacles in the dark area, preventing visible light laser emission The device 3 irradiates objects in bright areas to produce light spots that interfere with observation in dark areas, further improving the use effect.

Since the laser used in the visible light laser emitting device 3 is in the visible light band, it should avoid irradiating people's eyes as much as possible, so the visible light laser emitting device 3 should be arranged at the lower position inside the lamp body 1 or as low as possible on the car body, so that The height is much lower than the height of the human eye, which can effectively prevent the beam from shining on the human eye.

In addition, in order to prevent the beam from being raised excessively due to bumps in the vehicle body during driving, the visible light laser emitting device 3 is preferably equipped with a switch control circuit with an inclination sensor, and the switch control circuit is electrically connected to the laser in the visible light laser emitting device 3 . When the car body tilts up close to the limit due to bumps, the inclination sensor in the switch control circuit will detect and automatically turn off the laser power, so as to avoid the situation of excessive tilting of the beam; when the car body returns to a stable posture after the momentary bump The switch control circuit automatically turns on the laser power supply. The inclination sensor in this switch control circuit can adopt gyroscope, acceleration sensor, level sensor etc. all can, and these all are the modularized commercial products of the prior art that have been sold on the market, so the specific structure inside this switch control circuit is not described here. Let me repeat. Of course, it is also possible to use existing technical components such as electric pan-tilts controlled by inclination sensors, two-dimensional galvanometers, etc. to eliminate the influence of car body pitch on the light beam, but there are disadvantages such as high cost and large volume. The specific structure to be used is up to the designer. You can choose according to product positioning.

In order to further improve the perception level of the obstacle information of the array light source lights of the laser marking obstacles, it is also possible to match the visible light laser emitting device 3 with an optical signal receiving sensor and a signal difference calculation circuit, which are connected to each other to form a typical The advanced laser rangefinder system directly realizes the distance perception of the irradiated object. Among them, the optical signal receiving sensor can adopt avalanche diode, photomultiplier tube, photosensitive diode, etc., and these optical signal receiving sensors are suitable for matching the visible light laser emitting device 3 with a mechanical scanning structure; the optical signal receiving sensor can also adopt CCD image sensor, Array photosensitive devices such as CMOS image sensors, distance image sensors, and linear array optical sensors are suitable for matching the visible light laser emitting device 3 equipped with a beam shaping lens 4 . The signal difference calculation circuit is a single-chip microcomputer circuit commonly used in laser ranging products, and obviously this type of digital calculation circuit is a very common prior art. Since the above-mentioned laser ranging technology is a very mature existing technology, the above-mentioned optical signal receiving sensor and signal difference calculation circuit can also be purchased and implemented by those skilled in the art without any creative work, so its specific internal The structure will not be described in detail in this article.

The visible light laser emitting device 3 of this product can not only mark the obstacles in the dark area with light spots, so that the driver can see the obstacles in the dark area more clearly, it can also allow the camera sensor to detect road obstacles in the dark environment objects, so as to provide data for the implementation of high-brightness irradiation, as shown in Figure 3, the specific implementation is as follows:

In the dark environment at night, first start the visible light laser emitting device 3 so that the laser beam is irradiated parallel to the road. If the beam shaping lens 4 is installed in front of the laser in the visible light laser emitting device 3, the fan-shaped beam parallel to the road surface emitted by the beam shaping lens 4 will obviously irradiate obstacles on the road ahead and produce bright spots. The sensor can obviously capture these light spots, and use various algorithms such as geometric optics algorithm and machine vision algorithm to calculate the position data of the obstacle shown by the light spot. These algorithms are all existing technologies, which are recorded in open literature and the Internet, and will not be repeated here. Common CCD image sensor chips, CMOS image sensor chips, distance image sensor chips, etc. can be used inside the camera sensor. These are all commercially available prior art devices, and the internal details will not be repeated. If the laser in the visible light laser emitting device 3 is matched with the aforementioned mechanical rotation mechanism or beam scanning mechanism such as a vibrating mirror and a mirror drum, these mechanisms can obviously also make the beam scan in a scanning plane parallel to the road surface, In this way, road obstacles can be irradiated and light spots can be generated, and the camera sensor can also capture the light spots of road obstacles and calculate their positions. In short, after the camera sensor obtains the position data of the obstacle shown by the light spot, it can be transmitted to the car light controller, and then the car light controller controls the array light source 2 to highlight road obstacles. The high-brightness illumination mode is more suitable for urban roads instead of high beams, which can minimize the impact of the powerful beam of high beams on the urban environment and surrounding residents; the partition illumination mode is more suitable for use in suburban areas, national highways, etc. At this time, you can Always drive with high beams on, so these two modes can be switched to each other and will not be used at the same time, so that they will not affect each other.

In the high-brightness illumination mode, the visible light laser emitting device 3 needs to be turned on all the time to allow the camera sensor to detect road obstacles in time, but not only the vehicles and pedestrians in front will produce reflection spots after being irradiated by the laser beam, but also some buildings, facilities, trees on the roadside, etc. Light spots may be reflected. Although this allows the driver to see more obstacles and is more conducive to safety, if you come to a bustling city center or a crowded and narrow urban road, it will inevitably cause a certain amount of light pollution. In order to solve this problem, a non-visible light laser emission device can be installed separately for the high-brightness irradiation mode. The laser wavelength of the non-visible light laser emission device is the infrared band, that is, the non-visible light band. The total light irradiation range of the light source 2 matches in the horizontal direction, and the beam of the non-visible laser emitting device is parallel to the road surface. In this way, the non-visible light laser emitting device can replace the visible light laser emitting device 3 to provide obstacle light spot information for the camera sensor, but these light spots will be invisible to human eyes, thus basically solving the problem of light pollution. Since the CCD image sensor chips, CMOS image sensor chips, and distance image sensor chips used in the existing camera sensors are inherently sensitive to infrared bands, and their sensitivity is higher than that of visible light bands, they are more suitable for shooting non-visible light laser emitting devices. of light spots. At this time, it is only necessary to set the infrared filter switcher in the lens of the camera sensor to the infrared mode. These are all existing technologies, and details will not be repeated. The laser of the non-visible light laser emission device can also be matched with a beam shaping lens or a mechanical scanning mechanism, as well as a switch control circuit with an inclination sensor, an optical signal receiving sensor, and a signal difference calculation circuit. The implementation manners of 3 are basically the same, and all of them can be realized by those skilled in the art without creative efforts, so they will not be repeated here.

Although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention. The disclosure and description of this manual are explanations and guidance for the technical ideas and implementation of this patent, which can make it easier for those skilled in the art to understand and implement smoothly, but this patent is not limited to the specific implementation methods disclosed and described above. Changes, modifications, deletions, etc. made by personnel to the above-mentioned implementation methods on this basis still belong to the protection scope of the claims of the present invention.

Claims (7)

1. a kind of array light source car light of laser-marking barrier, it includes lamp body (1) and the array light source of internal installation (2), car light controller, camera sensing device, they are electrically connected to each other, it is characterized in that：It also there is at least one visible ray to swash Light emitting devices (3), the range of exposures of the visible light laser emitter device (3) and corresponding light-illuminating scope phase in the horizontal direction Matching, the light beam of the visible light laser emitter device (3) are parallel with road surface.

2. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：It also has at least one Individual non-visible light laser beam emitting device, the range of exposures of the non-visible light laser beam emitting device are shone with the light of array light source (2) Firing association's scope matches in the horizontal direction, and the light beam of the non-visible light laser beam emitting device is parallel with road surface.

3. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：Array light source (2) Light source cell is equipped with exclusive visible light laser emitter device (3), and visible light laser emitter device (3) range of exposures with The light-illuminating scope of the light source cell matches in the horizontal direction, the light source cell and the visible light laser emitter device (3) Mutually switching irradiation.

4. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：The visible light lasers are sent out Injection device (3) is built with the beam shaping lens (4) that can launch the fan beam parallel with road surface.

5. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：The visible light lasers are sent out Injection device (3) is built with the light-beam scanner that light beam transversal can at least scanned.

6. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：The visible light lasers are sent out Injection device (3) has the ON-OFF control circuit of sensor with angle, the ON-OFF control circuit and visible light laser emitter device (3) In laser electrical connection.

7. the array light source car light of laser-marking barrier according to claim 1, it is characterized in that：The visible light lasers are sent out Injection device (3) has the photo signal receiving sensor and signal difference counting circuit to match, and signal connects each other for they.