Signal transmitting assembly and gate machine

Abstract

The utility model relates to the technical field of channel management equipment, and provides a signal emission assembly and a gate machine, the signal emission assembly is applied to the gate machine, the signal emission assembly comprises at least one emission lamp, the emission lamp is suitable for being installed on an installation panel of the gate machine, and the installation panel is provided with a plurality of light outlet holes in an array mode. The emission lamps and the light outlet holes are arranged in a one-to-one correspondence mode, and each emission lamp adopts a VCSEL semiconductor laser. According to the signal transmitting assembly provided by the embodiment of the utility model, the VCSEL semiconductor laser vertically transmits the high-power optical laser beam from the top surface, the light emitting angle of the emergent light is smaller, the quantity of the emergent light which is collimated and emitted is large, and the width and the intensity of the auxiliary light spots of the output light spots are smaller; the problem of crosstalk between adjacent receiving ends can be reduced, and the accuracy of gate detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of channel management equipment, in particular to a signal transmitting component and a gate. Background Art

[0002] Existing gate equipment generally uses a light-emitting diode (LED) element as a transmitting end of a radiation module and a photodiode (PD) element as a receiving end to detect obstacles in a channel.

[0003] Due to the particularity of the LED element itself, the emission angle of the transmitting end is large and the generated secondary light spot is wide. When the gate is equipped with multiple shooting modules, the crosstalk problem between adjacent shooting modules is serious, which has a great impact on the normal operation of the gate equipment. Utility Model Content

[0004] The first aspect of the utility model provides a signal transmitting component to solve the defect of crosstalk between adjacent transmitting modules in the prior art. By adopting VCSEL semiconductor laser as the transmitting lamp, it can ensure that the emitted light of each transmitting lamp is nearly collimated, avoiding the crosstalk problem between two adjacent receiving ends.

[0005] A second aspect of the utility model provides a gate.

[0006] The first aspect of the present invention provides a signal transmitting assembly, which is applied to a gate, and includes:

[0007] At least one emitting lamp is suitable for being installed on the mounting panel of the gate, the mounting panel array is provided with a plurality of light emitting holes, each of the emitting lamps is arranged in one-to-one correspondence with the light emitting holes, and each of the emitting lamps adopts a VCSEL semiconductor laser.

[0008] According to the signal transmitting component provided by the utility model, it also includes a convex lens, the number of the convex lenses corresponds to the number of the transmitting lamps, the convex lenses are arranged on one side of the corresponding transmitting lamp and located on the light emitting path of the corresponding transmitting lamp, so that the light emitting angle of the transmitting lamp is less than or equal to 30°.

[0009] According to the signal transmitting assembly provided by the utility model, the convex lens includes a mounting portion and a convex transparent portion, the mounting portion is arranged around the convex transparent portion, the mounting portion is used to install the convex lens, and the light of the transmitting lamp passes through the convex transparent portion.

[0010] According to the signal transmitting assembly provided by the utility model, the distance between the transmitting light and the corresponding receiving end is negatively correlated with the emission angle of the convex lens.

[0011] According to the signal transmitting component provided by the utility model, the emission angle of the convex lens is equal to 0°.

[0012] The signal transmitting assembly provided by the utility model further includes a light-blocking sleeve, which is located between the transmitting lamp and the convex lens, one end of the light-blocking sleeve is sleeved on the outside of the transmitting lamp, and the other end of the light-blocking sleeve abuts against the convex lens.

[0013] According to the signal transmitting assembly provided by the utility model, the light-blocking sleeve comprises a sleeve portion and a light-blocking portion connected to each other, and a light-blocking cavity is configured inside the light-blocking portion;

[0014] The inner diameter of the light-blocking cavity gradually increases from one end of the sleeve portion toward a direction away from the sleeve portion.

[0015] According to the signal transmitting component provided by the utility model, the inner wall of the light blocking cavity is provided with a light blocking layer made of light blocking material.

[0016] The gate provided by the second aspect of the utility model comprises a gate body and a transmitting assembly as described in any one of the aforementioned embodiments, wherein the transmitting assembly is arranged on the gate body, and a receiving end cooperating with the transmitting assembly is arranged at a position opposite to the transmitting module.

[0017] According to the gate provided by the utility model, the gate body includes a first body and a second body arranged relatively to each other, the transmitting component is arranged at one of the first body and the second body, and the receiving end is arranged at the other of the first body and the second body.

[0018] The signal transmitting component provided by the embodiment of the utility model, the VCSEL semiconductor laser vertically emits a high-power optical laser beam from the top surface, the light emission angle of the emitted light is small, the number of collimated emitted light is large, the width and intensity of the secondary light spot of the output light spot are small, when the transmitting lamp is applied to the gate machine, the crosstalk problem between adjacent receiving ends can be reduced, and the accuracy of gate machine detection can be improved. In addition, compared with components such as LED, the spectrum of the VCSEL semiconductor laser is narrower, so the crosstalk effect between adjacent receiving ends is smaller, and the brightness of the VCSEL semiconductor laser will be higher at the same energy, and the receiving end is easier to receive the optical signal transmitted by the signal transmitting component; secondly, there is a resonant cavity inside the VCSEL semiconductor laser, which can make the emitted light more concentrated and more accurate. In this way, the light emission angle of the transmitting lamp can be reduced, the optical path of the emitted light can be optimized, and then the proportion of collimated emitted light can be increased, and the intensity and width of the secondary light spot can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a spectrum analysis data diagram of lamp beads provided in the prior art;

[0021] Figure 2 It is a schematic diagram of the matching relationship between the signal transmitting component and the receiving end provided by the embodiment of the utility model;

[0022] Figure 3 This is a spectrum analysis data diagram of a VCSEL semiconductor laser provided by an embodiment of the utility model;

[0023] Figure 4 It is an exploded schematic diagram of a signal transmitting assembly provided by an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of a convex lens provided in an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the angle relationship between the emitting lamp and the convex lens provided in the embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the assembly structure of the light-blocking sleeve provided in an embodiment of the utility model;

[0027] Figure 8 This is one of the experimental result diagrams of the simulation after the collimation design of the VCSEL semiconductor laser in the embodiment of the utility model;

[0028] Fig. 9 This is the second experimental result diagram of the simulation after the collimation design of the VCSEL semiconductor laser in the embodiment of the utility model;

[0029] Fig.10 is Fig. 9 One of the simulation experiment results obtained by adding a light-blocking sleeve and performing collimation design on the basis of the simulation experiment.

[0030] Fig.11 is Fig. 9 Figure 2 shows the simulation experiment results obtained by adding a light-blocking sleeve and performing collimation design on the basis of the simulation experiment.

[0031] Reference numerals:

[0032] 100: emitting lamp; 200: convex lens; 210: mounting portion; 220: convex transparent portion; 300: light blocking sleeve; 310: sleeve portion; 320: light blocking portion. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0035] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] Figure 1 It is a spectrum analysis data diagram of lamp beads provided in the prior art.

[0038] Existing gate equipment generally uses light-emitting diode elements as the transmitting end of the shooting module and photosensitive diode elements as the receiving end to detect obstacles in the channel. Figure 1 It can be seen that due to the particularity of the LED element itself, the emission angle of the transmitting end is large, and the generated spectrum and side light spot are wide. When the gate is equipped with multiple shooting modules, the crosstalk problem between adjacent shooting modules is serious, which has a great impact on the normal operation of the gate equipment.

[0039] Figure 2 It is a schematic diagram of the matching relationship between the signal transmitting component and the receiving end provided in an embodiment of the utility model.

[0040] Figure 2 The light emitting angle β of the emitting lamp 100 in the embodiment of the utility model is shown. Figure 2 A first aspect of the utility model provides a signal transmitting component, which is applied to a gate machine.

[0041] The signal transmitting assembly includes at least one transmitting lamp 100, which is suitable for being installed on the mounting panel of the gate. The mounting panel array is provided with a plurality of light emitting holes, and each transmitting lamp 100 is arranged one-to-one corresponding to the light emitting hole. Each transmitting lamp adopts a VCSEL semiconductor laser.

[0042] Specifically, at least one emitting lamp 100 means that in the embodiment of the utility model, the number of emitting lamps 100 can be one or more, and the number of emitting lamps 100 can be adaptively adjusted according to the actual detection requirements of the gate; for example, when the accuracy of the gate detection needs to be improved, the number of emitting lamps 100 can be adaptively increased, so that the number of emitted lights can be increased, and the contact area between the emitted light and the object to be detected can be increased, thereby improving the accuracy of the gate detection. When the application environment of the gate has a lower demand for detection accuracy, the number of emitting lamps 100 can be adaptively reduced, so that the cost of gate manufacturing can be reduced and the difficulty of assembling the gate can be reduced.

[0043] The installation panel of the gate refers to the side wall of the gate facing the detection channel. When the object to be tested passes through the detection channel, the light path of the transmitting lamp 100 intersects with the passing path of the object to be tested. The object to be tested will block the outgoing light emitted by the transmitting lamp 100. The receiving end matching the transmitting lamp 100 can determine the position of the object to be tested based on this.

[0044] It should be noted here that the direction of the array setting can extend horizontally or vertically along the installation panel. In some cases, the direction of the array setting can also extend at a certain angle to the horizontal or vertical direction. The array direction can be adaptively adjusted according to the actual detection requirements of the gate machine, and the embodiment of the utility model does not make specific limitations on this.

[0045] It can be understood that when the emitting lamp 100 is installed on the side of the mounting panel away from the detection channel, the light outlet hole can provide a light beam outlet for the emitted light of the emitting lamp 100. In an optional embodiment of the utility model, when the emitting lamp 100 is installed on the side of the mounting panel facing the detection channel, the light outlet hole can also serve as the mounting portion 210 of the mounting panel, which is used to fix the emitting lamp 100. Specifically, the fixing method can be clamping, for example, the shape of the light outlet hole is matched with the shape of the emitting lamp 100, and the emitting lamps 100 can be clamped on the light outlet hole one by one during assembly; the fixing method can also be bonding, for example, the emitting lamps 100 are bonded to the hole wall of the light outlet hole one by one through an adhesive; the fixing method can also be threaded connection, for example, an internal thread is drilled on the inner wall of the light outlet hole, and a corresponding external thread is tapped on the outer wall of the lamp housing of the emitting lamp 100. During assembly, the emitting lamp 100 is fixed to the light outlet hole through the cooperation of the internal and external threads; there are many ways of fixed connection, and the embodiments of the utility model will not be listed one by one here.

[0046] In an optional embodiment of the present invention, each emitting lamp 100 uses a vertical cavity surface emitting laser (Vertical-Cavity Surface-Emitting Laser, VCSEL) semiconductor laser. VCSEL semiconductor laser is a semiconductor laser diode, which is developed with semiconductors such as gallium quinone as materials and technology. It is different from other light sources such as LED and LD (laser diode). Figure 2 It can be understood that in the signal transmitting component provided by the embodiment of the utility model, the VCSEL semiconductor laser emits a high-power optical laser beam vertically from the top surface, the light output angle of the light output is small, the number of collimated light outputs is large, the width and intensity of the secondary light spot of the output light spot are small, and when the transmitting lamp 100 is applied to the gate machine, the crosstalk problem between adjacent receiving ends can be reduced, and the accuracy of the gate machine detection can be improved.

[0047] Figure 3 This is a spectrum analysis data diagram of a VCSEL semiconductor laser provided by an embodiment of the utility model.

[0048] In addition, refer to Figure 1 and Figure 3Compared with components such as LEDs, VCSEL semiconductor lasers have a narrower spectrum, so the crosstalk between adjacent receiving ends is smaller, and at the same energy, the brightness of VCSEL semiconductor lasers will be higher, making it easier for the receiving end to receive the optical signal transmitted by the signal transmitting component; secondly, there is a resonant cavity inside the VCSEL semiconductor laser, which can make the emitted light more concentrated and more accurate. In this way, the light emission angle of the emitting lamp 100 can be reduced, the optical path of the emitted light can be optimized, and the proportion of collimated emission of the emitted light can be increased, thereby reducing the intensity and width of the secondary light spot.

[0049] Figure 4 It is an exploded schematic diagram of a signal transmitting component provided in an embodiment of the utility model.

[0050] Reference Figure 4 In an optional embodiment of the utility model, the signal transmitting component also includes a convex lens 200, the number of the convex lenses 200 corresponds to the number of the transmitting lamps 100, the convex lens 200 is arranged on one side of the corresponding transmitting lamp 100, and is located on the light emitting path of the corresponding transmitting lamp 100.

[0051] The shape of the convex lens 200 can be circular, square or other shapes. The material of the convex lens 200 can be transparent materials such as glass and plastic. The shape and material of the convex lens 200 can be adaptively selected according to actual conditions, and the embodiment of the utility model does not make specific limitations on this.

[0052] Figure 5 It is a schematic diagram of the cross-sectional structure of a convex lens provided in an embodiment of the utility model.

[0053] Specifically, refer to Figure 5 The convex lens 200 includes a mounting portion 210 and a convex portion 220. The mounting portion 210 is disposed around the convex portion 220. The mounting portion 210 is used to mount the convex lens 200. The light of the emitting lamp 100 passes through the convex portion 220. Figure 5 The convex portion 220 protrudes from the plane of the mounting portion 210, and the shape of the mounting portion 210 is similar to that of the convex portion 220. For example, when the convex portion 220 is a circular structure, the mounting portion 210 is a ring shape matching therewith; when the convex portion 220 is a square, the mounting portion 210 is a square frame shape matching therewith.

[0054] In some cases, the shape of the mounting portion 210 may not be similar to that of the convex portion 220, and can be adaptively selected according to actual conditions. In an optional embodiment of the utility model, the mounting portion 210 and the convex portion 220 can be an integrated structure, in other words, the edge of the convex portion 220 is used to mount the convex lens 200, and the convex lens 200 is no longer processed with the mounting portion 210, and can be adaptively selected.

[0055] In an optional embodiment of the utility model, the convex lens 200 can be connected to the side of the installation panel facing the detection channel through a fixing tube. Specifically, one end of the fixing tube is connected to the installation panel, the inner hole of the fixing tube is connected to the light output hole, and the other end of the fixing tube is used to fix the convex lens 200. The fixed connection method can be snap-on, threaded or adhesive. Through the fixing tube, the convex lens 200 can be installed on the installation panel, and the convex lens 200 can be located on the light output path of the emitting lamp 100, so as to achieve a one-to-one correspondence between the convex lens 200 and the emitting lamp 100.

[0056] In an optional embodiment of the utility model, the convex lens 200 can also be fixed in the light exit hole. In this case, the light exit hole has a certain depth, and the emitting lamp 100 and the convex lens 200 are respectively fixed at the two ends of the light exit hole. Specifically, it can be adaptively adjusted according to the actual situation, and the utility model embodiment will not be repeated here. It should be noted here that the fixing method can be a clamping method, for example, the shape of the light exit hole is matched with the shape of the convex lens 200, and the convex lenses 200 can be clamped on the light exit hole one by one during assembly; the fixing method can also be bonding, for example, the convex lenses 200 are bonded one by one on the hole wall of the light exit hole through an adhesive; the fixing method can also be a threaded connection, for example, an internal thread is drilled on the inner wall of the light exit hole, and a corresponding external thread is tapped on the outer wall of the lamp shell of the convex lens 200. During assembly, the convex lens 200 is fixed to the light exit hole through the cooperation of the internal and external threads; there are many ways of fixed connection, and the utility model embodiment will not be listed one by one here. The connection method of the emitting lamp 100 and the light exit hole refers to the above text.

[0057] Reference Figure 4 and Figure 5 , the embodiment of the utility model is illustrated and described by taking a circular plano-convex lens 200 as an example. It should be noted here that in the optional embodiment of the utility model, the convex lens 200 can also include one of a biconvex lens 200 or a concave-convex lens 200. The example of the plano-convex lens 200 is only an illustrative example of the utility model and is not a specific limitation of the embodiment of the utility model.

[0058] Reference Figure 2 When multiple shooting modules (including mutually corresponding signal emitting components and receiving ends) are installed on the gate machine, it is best for the light emitted by the signal emitting component to be collimated. In this way, no excess light will enter the receiving end adjacent to the receiving end corresponding to the signal emitting component, thereby avoiding misjudgment by the receiving end. Based on this, the signal emitting component needs to be collimated. An example of the collimation design of the present invention is given below.

[0059] Reference Figure 2, based on the premise that the emitted light will not enter the receiving range of the adjacent receiving end, considering the closest distance and the farthest distance between adjacent gates, as well as the distance between two adjacent receiving ends, the minimum emission angle of the emitting light 100 can be calculated, referring to Figure 2 The following formula can be obtained:

[0060]

[0061] Wherein, β is the maximum light output angle of the transmitting light 100, H is the minimum distance between the transmitting light 100 of the gate and the receiving end, and d is the distance between two adjacent receiving ends.

[0062] Referring to the above formula, it can be known that the distance between the emitting lamp 100 and its corresponding receiving end is negatively correlated with the emission angle of the convex lens 200. In other words, to meet the collimation design, the greater the distance between the emitting lamp 100 and its corresponding receiving end, the smaller the emission angle of the convex lens 200.

[0063] Based on the above formula, by determining the emission angle of the emission lamp 100, the distance between the emission lamp 100 and the convex lens 200, the thickness of the convex lens 200 and the diameter of the convex lens 200, the parameters of the collimating lens required for collimated emission can be calculated.

[0064] According to the design of the collimating lens, the emission angle of the emission light of the emitting lamp 100 after passing through the collimating lens is required to be 0°. It can be understood that when the emitting lamp 100 is located at the focus of the lens, the emission light is emitted in parallel.

[0065] The calculation formula of the lens curvature can be obtained as follows:

[0066]

[0067] Among them, f is the focal length of the lens, n is the refractive index of the lens, r1 is the radius of curvature of one side of the lens, and r2 is the radius of curvature of the other side of the lens.

[0068] Figure 6 It is a schematic diagram of the angle relationship between the emitting lamp and the convex lens provided in an embodiment of the utility model.

[0069] Reference Figure 6 According to the focal length f of the lens and the diameter b of the lens, the light output angle α of the required emitting lamp 100 can be selected, and the calculation formula is as follows:

[0070]

[0071] Among them, b is defined according to the structural size, that is, it is a known condition. In the embodiment of the utility model, the commonly used 85 mm is taken as an example.

[0072] Combining the above three formulas, the specific calculation is as follows:

[0073] The distance between the signal transmitting component and the receiving end of the existing gate is generally 0.55m-1.6m, then:

[0074]

[0075] β=17.6°(6.1°)

[0076] From the calculation results of the above formula, it can be known that the exit angle of the exit light at the convex lens 200 needs to be less than 6.1°, otherwise it will cause crosstalk problems at the receiving end. The actual convex lens 200 is designed according to 0° collimation. In other words, the exit angle of the convex lens 200 is equal to 0°. If it is designed according to 6.1°, the actual angle will be greater than the design value.

[0077] The required radius of the convex lens 200 is calculated according to the emission angle requirement. It is known that the convex lens 200 is a plano-convex lens 200, that is, r2 is ∞. Taking the convex lens 200 made of polycarbonate (PC) as an example, n=1.586, the position of the emitting lamp 100 is known, and f (which can be measured by corresponding instruments) is known, then the calculation process of the r1 surface radius is as follows:

[0078]

[0079] It can be calculated that r1=11.72mm.

[0080] Therefore, the basic structure of the convex lens 200 can be determined. The radius of the curved surface of the convex transparent portion 220 is 11.72 mm. The diameter of the convex lens 200 can be adaptively selected according to actual conditions. In the embodiment of the utility model, b is 10.8 mm as an example.

[0081]

[0082] It can be concluded that a=30.2°. The above formula can be used to determine that the maximum light output angle of the emitting lamp 100 is 30.2°. Therefore, it is necessary to select an emitting lamp 100 with an output angle within 30°.

[0083] Due to the error, considering that the full angle of the actual emitting lamp 100 must be greater than 30°, in an optional embodiment of the present utility model, the signal emitting assembly further includes a light blocking sleeve 300, referring to Figure 4 The light-blocking sleeve 300 is located between the emitting lamp 100 and the convex lens 200 , one end of the light-blocking sleeve 300 is sleeved on the outside of the emitting lamp 100 , and the other end of the light-blocking sleeve 300 abuts against the mounting portion 210 of the convex lens 200 .

[0084] Figure 7It is a schematic diagram of the assembly structure of the light-blocking sleeve provided in an embodiment of the utility model.

[0085] Specifically, refer to Figure 4 and Figure 7 The light-blocking sleeve 300 includes a sleeve portion 310 and a light-blocking portion 320 that are connected to each other, and a light-blocking cavity is configured inside the light-blocking portion 320; the inner diameter of the light-blocking cavity gradually increases from one end of the sleeve portion 310 toward a direction away from the sleeve portion 310. In other words, the light-blocking cavity is conical to match the shapes of the emitting lamp 100 and the convex lens 200.

[0086] The shape of the sleeve portion 310 is adapted to the shape of the emitting lamp 100, and is used to clamp the emitting lamp 100. In an optional embodiment of the utility model, an adhesive may be applied to the outer wall of the emitting lamp 100 to enhance the stability of the connection between the sleeve portion 310 and the emitting lamp 100. The end of the light blocking portion 320 facing away from the sleeve portion 310 abuts against the mounting portion 210 of the convex lens 200, and the stability of the connection between the two may be enhanced by clamping or bonding. Specifically, an adaptive selection may be made according to actual conditions, and the utility model embodiment will not be described in detail here.

[0087] Reference Figure 4 and Figure 7 It can be understood that the signal transmitting component provided in the embodiment of the utility model can adaptively connect the transmitting lamp 100 and the convex lens 200 by setting the light-blocking sleeve 300, and appropriately limit the distance between the transmitting lamp 100 and the convex lens 200 to assist the transmission of the emitted light; in addition, the light-blocking sleeve 300 can also play the role of converging the emitted light, reduce the loss of the emitted light caused by the transmission between the transmitting lamp 100 and the convex lens 200, and reduce the formation of side spots.

[0088] In an optional embodiment of the utility model, the inner wall of the light-blocking cavity is provided with a light-blocking layer composed of a light-blocking material; specifically, the material of the light-blocking layer can be a black light-absorbing material such as graphite or carbon black. In some cases, the material of the light-blocking layer can also be a light-absorbing material such as a ferromagnetic material, metal, carbon fiber, etc. Specifically, it can be adaptively selected according to actual conditions. It can be understood that the light-blocking layer is provided in the light-blocking cavity, which can effectively absorb the stray light emitted by the emission lamp 100 whose emission angle does not meet the requirements, effectively avoid the influence of this part of the stray light on the useful light (light that meets the emission angle requirements), and can improve the intensity of the emitted light and improve the emission angle.

[0089] Reference Figures 2 to 7The signal transmitting component provided by the embodiment of the utility model sets a VCSEL semiconductor laser as the transmitting lamp 100, and adopts a convex lens 200 and a light-blocking sleeve 300 for collimation design. Through simulation verification, it is found that the emission angle of more than half of the emitted light of the signal transmitting component can be within 5°, which can meet the requirements of the light emission angle of the signal transmitting component in the previous design, and the emitted light energy is concentrated and the secondary light spot is small. In addition, the spectrum of the VCSEL semiconductor laser is narrower than that of ordinary LED lamp beads, which can reduce the stray light in the light energy and the interference of strong light on the receiving end, and can avoid the crosstalk problem at the receiving end; the efficiency of the VCSEL semiconductor laser in converting electrical energy into light energy is higher than that of ordinary LED lamp beads, which can greatly reduce power consumption, save energy and reduce costs for the signal transmitting component.

[0090] Figure 8 This is one of the experimental result diagrams of the simulation after the collimation design of the VCSEL semiconductor laser in the embodiment of the utility model, wherein the abscissa represents the spot width and the ordinate represents the spot intensity; Fig. 9 This is the second experimental result diagram of the simulation after the collimation design of the VCSEL semiconductor laser in the embodiment of the utility model, wherein the abscissa represents the spot width and the ordinate represents the spot intensity; Fig.10 is Fig. 9 One of the simulation experiment result diagrams obtained by adding a light-blocking sleeve to the collimation design based on the , where the abscissa represents the spot width and the ordinate represents the spot intensity; Fig.11 is Fig. 9 Figure 2 shows the simulation experiment results obtained by adding a light-blocking sleeve and performing collimation design on the basis of the simulation experiment.

[0091] Reference Figures 8 to 11 It can be seen that after the VCSEL semiconductor laser passes through the convex lens 200, the light tends to be collimated, and the maximum spot diameter is 40mm, which is much smaller than 85mm. It does not cause crosstalk to the adjacent receiving end, and the effect meets the requirements. After adding the light-blocking sleeve 300, the maximum spot diameter is less than 20mm, which is much smaller than 85mm. The light-blocking sleeve 300 further reduces the spot diameter, making the outgoing light beam of the signal transmitting component more concentrated. When multiple shooting modules are installed on the gate, crosstalk between adjacent shooting modules can be avoided, which improves the accuracy of the detection results of the receiving end, and allows the signal detection component and the receiving end to adapt to more complex and harsh working conditions.

[0092] The second aspect of the utility model provides a gate, which includes a gate body and a transmitting component of any one of the aforementioned embodiments. The transmitting component is arranged on the gate body, and a receiving end matching the transmitting component is arranged at a position opposite to the transmitting module.

[0093] The gate body includes a first body and a second body arranged opposite to each other, a transmitting component is arranged on one of the first body and the second body, and a receiving end is arranged on the other of the first body and the second body.

[0094] It should be noted that the technical solutions in various embodiments of the present utility model can be combined with each other, but the basis for the mutual combination is that it can be implemented by ordinary technicians in the field; when the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present utility model.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A signal transmitting component, applied to a gate, characterized in that: include: At least one emitting lamp is suitable for being installed on the mounting panel of the gate, the mounting panel array is provided with a plurality of light emitting holes, each of the emitting lamps is arranged in one-to-one correspondence with the light emitting holes, and each of the emitting lamps adopts a VCSEL semiconductor laser.

2. The signal transmitting assembly according to claim 1, characterized in that: It also includes convex lenses, the number of which corresponds to the number of the emitting lamps. The convex lenses are arranged on one side of the corresponding emitting lamp and located on the light emitting path of the corresponding emitting lamp, so that the light emitting angles of the emitting lamps are less than or equal to 30°.

3. The signal transmitting assembly according to claim 2, characterized in that: The convex lens includes a mounting portion and a convex transparent portion. The mounting portion is arranged around the convex transparent portion. The mounting portion is used to mount the convex lens. The light of the emitting lamp passes through the convex transparent portion.

4. The signal transmitting assembly according to claim 2, characterized in that: The distance between the transmitting lamp and its corresponding receiving end is negatively correlated with the emission angle of the convex lens.

5. The signal transmitting assembly according to claim 4, characterized in that: The emission angle of the convex lens is equal to 0°.

6. The signal transmitting assembly according to any one of claims 2 to 5, characterized in that: It also includes a light-blocking sleeve, which is located between the emitting lamp and the convex lens. One end of the light-blocking sleeve is sleeved on the outside of the emitting lamp, and the other end of the light-blocking sleeve abuts against the convex lens.

7. The signal transmitting assembly according to claim 6, characterized in that: The light-blocking sleeve comprises a sleeve portion and a light-blocking portion connected to each other, and a light-blocking cavity is configured inside the light-blocking portion; The inner diameter of the light-blocking cavity gradually increases from one end of the sleeve portion toward a direction away from the sleeve portion.

8. The signal transmitting assembly according to claim 7, characterized in that: The inner wall of the light-blocking cavity is provided with a light-blocking layer made of light-blocking material.

9. A gate machine, characterized in that: It comprises a gate body and a transmitting assembly as claimed in any one of claims 1 to 8, wherein the transmitting assembly is arranged on the gate body, and a receiving end matched with the transmitting assembly is arranged at a position opposite to the transmitting assembly.

10. The gate according to claim 9, characterized in that: The gate body includes a first body and a second body that are arranged opposite to each other, the transmitting component is arranged at one of the first body and the second body, and the receiving end is arranged at the other of the first body and the second body.

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