Safety mechanism for comparing sensing signals
By setting up a safety mechanism for comparing the sensing signal inside the light quantity sensor of the automatic passing device, projecting and receiving light using geometric optical methods, forming a light field range and converting reflected light into an electrical signal, the problems of inaccurate static sensing and safe door closing operation in the prior art are solved, and the door leaf of the automatic passing device is accurately opened and safe door closing.
Patent Information
- Application Number
- CN202410020779.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-24
- Filing Date
- 2024-01-05
- Publication Date
- 2025-05-27
AI Technical Summary
The light sensors of existing automatic passing equipment are difficult to accurately sense the sensed body in static conditions, resulting in the door leaf being unable to remain open and the control module cannot ensure safe door closing operation.
A safety mechanism for comparing the sensing signal is provided inside the light quantity sensor of the automatic passing device, which includes a light emitting module, a convex lens group, a light receiving module, a convex lens group and a control module. Light is projected and received through geometric optical methods, forming a light field range and converting reflected light into an electrical signal, and comparing it with a processing unit to ensure that the door leaf remains open or safely closed.
Accurate sensing in both static or dynamic situations is achieved, ensuring that the door leaf of the automatic passing device remains in the open position and is safely closed when appropriate, providing better safety protection.
Smart Images
Figure CN120044622A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a safety mechanism for comparing sensing signals, especially a mechanism disposed inside a light quantity sensor of an automatic access device, which compares an electrical signal stored in a processing unit with a changing electrical signal to determine a difference, thereby providing a safety sensing device for keeping a door leaf open and preventing the door leaf from closing and pinching people. Background Art
[0002] Automatic access devices are generally used in some occasions where people or vehicles often enter, exit, or approach (such as warehouses, access compartments, banks, shopping malls, or companies, etc.). Through a sensor device provided at the top of the door, when it senses that a person or vehicle is approaching, entering, or leaving, it can drive a motor to open the door leaf or automatic rolling door of the automatic access device. After the person or vehicle leaves, the sensor does not sense, and the door leaf or automatic rolling door of the automatic access device returns to the closed state. Light sensor devices are often used for sensing in automatic access devices. However, existing infrared light sensor devices are often used for dynamic sensing. When the object to be sensed enters the light field range, the sensor is difficult to be used for static sensing of the object to be sensed. In this way, the door leaf will not be able to maintain the open state, so the closing operation of the door leaf will pose a danger of collision to the static object to be sensed; and in the prior art, since the control module of the automatic access device does not have the function of storing and comparing with each other the door leaf electrical signals generated by the reflected light of the door leaf light field, when the object to be sensed is located at the position where the door leaf is closing and moving, the control module will not be able to ensure that the door leaf maintains the open state or operates safely and correctly when closing. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a safety mechanism for comparing sensing signals in view of the deficiencies of the prior art. Whether in static or dynamic situations, the comparison mechanism inside the light quantity sensor applying the technology of the present case can accurately detect and judge, and keep the door leaf of the automatic access device in the open position and operate safely and correctly when closing.
[0004] To solve the above technical problems, the present invention provides a safety mechanism for comparing sensing signals, which is disposed inside a light quantity sensor of an automatic access device. The safety mechanism for comparing sensing signals includes: at least one emitting convex lens lens group, which includes at least one emitting convex lens; at least one light emitting module includes at least one light emitting component, and the light emitting components respectively project light rays onto their respective emitting convex lenses, project by means of geometric optics, and combine into a corresponding light field range and a corresponding luminous flux; at least one receiving convex lens lens group, which includes at least one receiving convex lens; at least one light receiving module, which includes at least one light receiving component and is a photoelectric conversion component. The luminous flux of the light field range reflects corresponding reflected light according to the environment, and by applying the method of geometric optics, it is reflected to their respective light receiving components through the receiving convex lens lens group, and the reflected light is converted into a corresponding electrical signal; and at least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the electrical signal converted by the light receiving component can be input and stored in the processing unit; wherein when there is no sensed object entering the light field range, the light receiving module will output a static first ambient electrical signal and store it in the processing unit of the control module for comparison reference. After that, when there is a sensed object entering the light field range, whether the sensed object is dynamic or static, the light receiving module will generate a first variable electrical signal, and compare it with the stored first ambient electrical signal in the processing unit. If the waveform of the first variable electrical signal is different from the waveform of the first ambient electrical signal, the control module can make the automatic access device maintain the open door state; wherein the light emitting module and the light receiving module correspondingly project and sense at the position where the door leaf of the automatic access device moves, forming the luminous flux of another door leaf light field range. When there is no sensed object entering the door leaf light field range when the door leaf is fully open, the light receiving module will generate a second static electrical signal of the door leaf and store it separately in the processing unit of the control module for comparison reference. After that, when the door leaf is fully open and there is a sensed object entering the door leaf light field, whether dynamic or static, the light receiving module will generate a second variable electrical signal of the door leaf and compare it with the stored second static electrical signal separately in the processing unit. If the waveform of the second variable electrical signal is different from the waveform of the second static electrical signal, the control module can make the automatic access device maintain the open door state; for the door leaf of the automatic access device, due to the operation at a constant speed such as closing the door, the door leaf will reflect a regularly varying reflected light within the operating range of the door leaf, and the light receiving module outputs a third door leaf electrical signal and stores it separately in the processing unit of the control module. After that, for each third door leaf electrical signal generated during the closing operation, it will be compared with the stored third door leaf electrical signal in the processing unit. If there is a fluctuation with the same regular change, the processing unit of the control module can make the door leaf of the automatic access device complete the closing action.
[0005] To solve the above technical problems, the present invention further provides a safety mechanism for comparing sensed signals, which is disposed inside a light quantity sensor of an automatic access device. The safety mechanism for comparing sensed signals includes: at least one transmitting convex lens lens group, which includes at least one transmitting convex lens; at least one light emitting module includes at least one light emitting component, and the light emitting components respectively project light rays onto their respective transmitting convex lenses, project using geometric optics, and combine into a corresponding light field range and corresponding luminous flux; at least one receiving convex lens lens group, which includes at least one receiving convex lens; at least one light receiving module, the light receiving module includes at least one light receiving component and is a photoelectric conversion component, the luminous flux of the light field range reflects corresponding reflected light according to the environment, and using the method of geometric optics, it is reflected to their respective light receiving components via the receiving convex lens lens group, and the reflected light is converted into corresponding electrical signals; and at least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the electrical signals converted by the light receiving components can be input and stored in the processing unit; wherein when there is no sensed object entering the light field range, the light receiving module will output a static first ambient electrical signal and store it in the processing unit of the control module for comparison reference. After that, when there is a sensed object entering the light field range, whether the sensed object is dynamic or static, the light receiving module will generate a first variable electrical signal, and compare it with the stored first ambient electrical signal in the processing unit. If the waveform of the first variable electrical signal is different from the waveform of the first ambient electrical signal, the control module can make the automatic access device maintain the open door state.
[0006] To solve the above technical problems, the present invention further provides a safety mechanism for comparing sensing signals, which is disposed inside a light quantity sensor of an automatic access device. The safety mechanism for comparing sensing signals includes: at least one emitting convex lens lens group, which includes at least one emitting convex lens; at least one light emitting module includes at least one light emitting component, and the light emitting components respectively project light rays onto their respective emitting convex lenses, project using geometric optics methods, and combine to form a corresponding light field range and corresponding luminous flux; at least one receiving convex lens lens group, which includes at least one receiving convex lens; at least one light receiving module, the light receiving module includes at least one light receiving component and is a photoelectric conversion component. The luminous flux of the light field range reflects corresponding reflected light according to the environment, and using geometric optics methods, it is reflected to their respective light receiving components through the receiving convex lens lens group, and the reflected light is converted into corresponding electrical signals; and at least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the electrical signals converted by the light receiving components can be input and stored in the processing unit; wherein the light emitting module and the light receiving module correspondingly project and sense at the position where the door leaf of the automatic access device moves, forming the luminous flux of another door leaf light field range. When no sensing body enters the full-open door leaf light field range of the door leaf, the light receiving module will generate a second static electrical signal of the door leaf and store it separately in the processing unit of the control module for comparison reference. After that, when the door leaf is fully open and the door leaf light field is entered by a sensing body, whether dynamic or static, the light receiving module will generate a second variable electrical signal of the door leaf, and compare it with the stored second static electrical signal in the processing unit separately. If the waveforms of the second variable electrical signal and the second static electrical signal are different, the control module can make the automatic access device maintain the open state; for the door leaf of the automatic access device, due to the closing operation at a constant speed, the door leaf will reflect a regularly varying reflected light within the operating range of the door leaf, and the light receiving module outputs a third door leaf electrical signal and stores it separately in the processing unit of the control module. After that, for each third door leaf electrical signal generated during the closing operation, it will be compared with the stored third door leaf electrical signal in the processing unit. If there are fluctuations with the same regular change, the processing unit of the control module can make the door leaf of the automatic access device complete the closing action.
[0007] Preferably, a plurality of the light emitting components are provided, and these light emitting components are electrically connected to a first circuit board. A plurality of the light receiving components are provided, and these light receiving components are electrically connected to a second circuit board, and these light receiving components are electrically connected to the control module through the second circuit board.
[0008] Preferably, the optical emission module is correspondingly arranged at the rear side of the emission convex lens group. The light emitted by the optical emission component is projected onto the passing environment through the emission convex lens to form a light field range corresponding to the light flux. The optical reception module is correspondingly arranged at the rear side of the reception convex lens group, and the light reflected back within the light flux of the light field range can be reflected by the reception convex lens to the optical reception component.
[0009] Preferably, the emission convex lens and the reception convex lens are Fresnel lenses.
[0010] Preferably, the light flux within the light field range can reflect static reflected light when not entered by the sensed object. After being converted into a static first electrical signal and stored in the database of the processing unit for comparison, the reflected light of the light flux of each light field range correspondingly represents a condition of the sensed object, including the dynamic and static conditions of the sensed object.
[0011] Preferably, the database of the processing unit can store the reflected light of the light flux within the light field range of the door leaf of the automatic access device in the fully open, fully closed, and moving states. After being converted into various door leaf electrical signals, the data is used for comparison.
[0012] Preferably, the database of the processing unit can store multiple electrical signals to compare the changes in the reflected light of the light flux within the light field range. The change in the reflected light of each light field range correspondingly represents a condition of the sensed object, including the dynamic and static conditions of the sensed object.
[0013] Preferably, the optical emission module includes at least one visible light emission module. The visible light emission module includes at least one visible light emission component and at least one visible light emission convex lens, and uses the method of geometric optics to emit visible light to generate at least one visible light projection point; the visible light emission module is a laser emission module, wherein the laser emission component and the visible light emission convex lens can be integrally coated and emit at least one laser projection point; the visible light module is correspondingly projected at a position inside the front edge of the light field range, and shows the relative position between the light field range and the automatic access device.
[0014] The beneficial effects of the present invention are as follows. The safety mechanism for comparing and sensing signals provided by the present invention includes at least one light emission module, at least one emission convex lens group, at least one light reception module, at least one reception convex lens group, and at least one control module. The light emission module includes at least one light emission component. The light emitted by the light emission component is projected through the emission convex lens, forming a light field range in the passage environment and generating a corresponding light flux. The light reception module includes at least one light reception component, which receives the reflected light within the light field range through the reception convex lens. The control module includes a processing unit. The light reception component receives the reflected light within the light field range and converts it into an electrical signal, which is then transmitted to the processing unit. By using the change in the reflected light within the light field range, it is possible to determine whether a sensed object has entered, and provide control for the opening and closing of the automatic access device. Therefore, the present invention can use the change in the light field within the light field range to determine whether a sensed object (such as a person or an object) has entered. Whether it is a static or dynamic situation, it can be accurately detected and judged, enabling the door leaf of the automatic access device to close safely and correctly.
[0015] In addition, the light field range of the present invention can be located within the path range of the movement of the door leaf of the automatic access device. When there is no sensed object entering the full-open door leaf light field range of the door leaf, the light reception module of the door leaf will generate a second static electrical signal of the door leaf, which is additionally stored in the processing unit of the control module for comparison reference. After that, when the door leaf is fully open and there is a sensed object entering the door leaf light field, whether it is dynamic or static, a second variable electrical signal will be generated, and the differences between the two will be compared with each other. The control module can then keep the automatic access device in the open state. At the same time, by using the regular change in the reflected light generated during the closing of the door leaf at a constant speed, it is converted into a third door leaf electrical signal and stored in the processing unit of a control module. After that, the third door leaf electrical signal generated in each closing state will be compared with the previously stored door leaf electrical signal. If there are fluctuations with the same regular change in the two door leaf electrical signals, the processing unit of the control module can make the door leaf of the automatic access device complete a safe closing action.
[0016] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and illustration purposes and are not used to limit the present invention. Brief Description of the Drawings
[0017] Figure 1 It is a three-dimensional exploded view of the overall mechanism of the safety mechanism for comparing and sensing signals in the first embodiment of the present invention.
[0018] Figure 2 It is a schematic diagram of the infrared optical axis and visible light optical axis emission of the safety mechanism for comparing and sensing signals in the first embodiment of the present invention.
[0019] Figure 3Schematic diagram of the optical axis of the infrared reflected light and the laser emission module of the safety mechanism for comparing sensed signals in the first embodiment of the present invention.
[0020] Figure 4 Exploded perspective view of the safety mechanism for comparing sensed signals in the second embodiment of the present invention, without visible light and the overall mechanism.
[0021] Figure 5 Schematic diagram of the optical axis of the infrared emitted light and the reflected light of the safety mechanism for comparing sensed signals in the second embodiment of the present invention.
[0022] Figure 6 Schematic diagram of the optical axis and the light field range projected by the safety mechanism for comparing sensed signals in the second embodiment of the present invention.
[0023] Figure 7 Schematic diagram of the optical axis and the light field range projected by the infrared and visible light of the safety mechanism for comparing sensed signals in the first embodiment of the present invention.
[0024] Figure 8 Schematic diagram of the optical axis of the reflected light within the light field of the safety mechanism for comparing sensed signals in the first embodiment of the present invention.
[0025] Figure 9 Schematic diagram of the optical axis and the light field range projected by the infrared and visible light of the safety mechanism for comparing sensed signals in the third embodiment of the present invention.
[0026] Figure 10 Schematic diagram of the optical axis of the reflected light within the light field of the safety mechanism for comparing sensed signals in the third embodiment of the present invention. Detailed implementation manner
[0027] [Embodiment]
[0028] Please refer to Figure 1 , the present invention provides a safety mechanism 100 for comparing sensed signals, which needs to be correspondingly installed inside the light quantity sensor 500 (as Figures 6 to 10 shown), the housing size and appearance of this sensor can be designed separately according to requirements, and it should be installed in the sensing device within the passing range of an automatic access device (such as an electric automatic door, an electric rolling door). In this embodiment, it is installed in the automatic access device 200 (such as Figures 6 to 10As shown, the automatic access device 200 can be an electric automatic door or an automatic rolling door, etc. In this embodiment, the automatic access device door 200 is shown as an electric automatic door. The safety mechanism 100 for comparing sensing signals is installed inside the above-mentioned light quantity sensor 500 and is set above the automatic access device 200. The safety mechanism 100 for comparing sensing signals includes at least one light emitting module 1-1, a visible light emitting module 1-2, at least one light receiving module 2, and at least one control module 3. This embodiment shows that there are an infrared light emitting module 1-1, a visible light emitting module 1-2, and an infrared light receiving module 2. The light emitting module 1-1 and the light receiving module 2 are arranged at intervals. The number and positions of the light emitting module 1-1 and the light receiving module 2 are not limited and can be changed according to needs. In addition, the safety mechanism 100 for comparing sensing signals may not have devices related to the visible light emitting module 1-2 (such as Figure 4 and Figure 5 as shown).
[0029] Please refer to Figure 4 . The light emitting module 1-1 includes at least one light emitting component 11. This embodiment shows that there are multiple light emitting components 11. These light emitting components 11 can be electrically connected to a first circuit board 12 to form a modular design. The light emitting component 11 can project light to form a light field range 300 (as shown in Figure 6 ) and generate a corresponding luminous flux. The light field range 300 is projected on the access range of the automatic access device 200. The light field range 300 can be projected on the access range inside or outside the door of the automatic access device 200 alone or simultaneously according to needs.
[0030] Please refer to Figure 2 . In this embodiment, the light emitting module 1-1 can be an infrared light emitting module, and the visible light emitting module 1-2 is used to emit visible light projection points 600 (as shown in Figure 7 ) to clearly mark the position of the light field range 300 (as shown in Figure 7 ). As shown in Figure 2 , the one on the left is the visible light emitting module 1-2, and the light emitting module 1-1 in the middle can be an infrared light emitting module.
[0031] Please refer to Figure 2 . The light emitting module 1-1 includes at least one light emitting component 11. This embodiment shows that there are multiple light emitting components 11. These light emitting components 11 can be electrically connected to a first circuit board 12 to form a modular design. The light emitting component 11 can project light to form a light field range 300 (as shown in Figure 7As shown, the light field range 300 is located in the door leaf operation passage of the automatic access device 200 and generates a corresponding light flux. The light field range 300 can be projected alone or simultaneously inside or outside the door of the automatic access device 200 as needed; and the visible light emission module 1-2 includes at least one visible light emission component 13. The visible light emission component 13 (which can be an LED component or a laser component) can project a visible light projection point 600 into the door leaf operation passage of the automatic access device 200 (such as Figure 7 As shown, this embodiment shows that the position of the leading edge of the projected light field range 300 can be synchronously displayed, or the position of the leading edge of the light field range 300 in the door leaf operation channel of the automatic access device 200 can be displayed.
[0032] Please refer to Figure 3 and Figure 5 , the light receiving module 2 on the right side. The light receiving module 2 includes at least one light receiving component 21. In this embodiment, a plurality of light receiving components 21 are shown. These light receiving components 21 can be electrically connected to a second circuit board 22 to form a modular design. The light receiving component 21 can receive the reflected light reflected back by the light flux within the light field range 300 (such as Figure 8 As shown), whether there is a sensed object (such as a person or an object) entering, the reflected light of the light flux will have a corresponding change.
[0033] Please refer to Figure 2 and Figure 5 , in this embodiment, each light emission module 1-1 is correspondingly provided with a transmitting convex lens group 4-1. The transmitting convex lens group 4-1 includes at least one transmitting convex lens 41. The transmitting convex lens 41 can be a Fresnel lens. The transmitting convex lens 41 can be arranged in front of these light emission components 11 according to the requirements of geometric optics. The light emitted by these light emission components 11 is directed towards the transmitting convex lens 41 and is correspondingly projected onto the access sensing range of the automatic access device 200 to form the light field range 300.
[0034] Please refer to Figure 2 , in this embodiment, each visible light emission module 1-2 is correspondingly provided with a visible light transmitting convex lens group 4-2. The visible light transmitting convex lens group 4-2 includes at least one visible light transmitting convex lens 42. The visible light transmitting convex lens 42 can be a Fresnel lens. The visible light transmitting convex lens 42 can be arranged in front of these visible light emission components 13 according to the requirements of geometric optics. The visible light projected by these visible light emission components 13 can be correspondingly directed towards the visible light transmitting convex lens 42. The visible light emission module 1-2 can be a laser emission module 1-3, where the laser emission component and the visible light transmitting convex lens can be integrally coated (such as Figure 3 As shown). The visible light module is correspondingly projected onto the visible light projection point 600 at the leading edge of the light field range 300 (such as Figure 7and Figure 9 as shown
[0035] Please refer to Figure 3 and Figure 5 , in this embodiment, a receiving convex lens group 5 is correspondingly arranged for each optical receiving module 2. The receiving convex lens group 5 includes at least one receiving convex lens 51. The reflected light reflected back within the light field range 300 (such as Figure 8 as shown) can be reflected by the receiving convex lens 51 to the optical receiving component 21.
[0036] Please refer to Figure 3 and Figure 5 . The optical receiving module 2 is electrically connected to the control module 3. The optical receiving component 21 can be electrically connected to the control module 3 through the second circuit board 22. The control module 3 includes a processing unit 31. The processing unit 31 may include an electronic circuit, a microcontroller (MCU), and a memory (RAM), etc. The optical receiving component 21 receives the reflected light of the light flux reflected back within the light field range 300. The reflected light is converted into an electrical signal by a photoelectric conversion unit (such as an infrared sensing LED) and transmitted to the processing unit 31 of the control module 3. The change of the reflected light within the light field range 300 (such as Figure 8 as shown) can be used to determine whether a sensed object (such as a person or an object) enters, so as to provide the opening and closing control for the door leaf of the automatic access device 200.
[0037] Convert the reflected light of multiple light field ranges 300 into electrical signals and store them in the memory database of the processing unit 31 for comparison. The database pre-stores the conditions of sensed objects (such as people or objects) representing different light field ranges 300. Each light field range 300 can correspondingly represent a condition of a sensed object (such as a person or an object), including various conditions of the sensed object (such as a person or an object) in dynamic and static states, and is used to determine whether a sensed object (such as a person or an object) enters.
[0038] When no sensing object (such as a person or an object) enters the light field range 300 and generates a static first electrical signal, it will be stored in the processing unit 31 of the control module 3. Subsequently, the change in the reflected light of the light field range 300 can be utilized. If a sensing object enters the light field range 300, whether static or dynamic, it will generate changing or fluctuating reflected light, which is then converted into a changing electrical signal by the light receiving component 21 and input into the processing unit 31 of the control module 3 for comparison with the stored static first electrical signal, thereby providing control to keep the automatic access device open or closed. As described above, if there is an external sensing object that is static within the light field range 300, it will also generate changing static reflected light and a changing static first electrical signal. Through the judgment of the processing unit 31 of the control module 3, the door leaf can be kept in the open state to provide a protection function for the door leaf of the automatic access device to prevent pinching when closing. Therefore, the present invention can utilize the change in the reflected light of the light field range 300 to determine whether a sensing object (such as a person or an object) enters, and can detect and judge in both static and dynamic situations.
[0039] Please refer to Figure 4 and Figure 5 , in this embodiment, a single light receiving module 2 receives the reflected light reflected back from the light field range 300. In this embodiment, the visible light emitting module is omitted.
[0040] Please refer to Figure 9 and Figure 10 , the safety mechanism 100 for comparing sensing signals of the present invention can also be used to provide a safety light anti-pinch protection function. If a light emitting module 1-1 and a light receiving module 2 are correspondingly projected within the moving range of the door leaf of the automatic access device, the operation speed of the door leaf closing, etc. can also be sensed, and a third door leaf electrical signal of regular door leaf reflected light is generated and stored in the processing unit 31 of the control module 3. The stored third door leaf electrical signal will be compared with the third door leaf electrical signal generated during the subsequent door leaf closing operation. If there is a third door leaf electrical signal of the same regular reflected light in the closed state, the processing unit 31 of the control module 3 can make the door leaf of the automatic access device complete the closing action.
[0041] Please refer to Figure 9 and Figure 10, where the door leaf light emission module 1-1 and the door leaf light reception module 2 only correspond to projecting and sensing at the position of the door leaf operation path 400 of the automatic access device, forming the light flux of another light field of the door leaf operation range. When the door leaf operation path 400 of the fully opened door leaf is not entered by the sensing body, the door leaf light reception module 2 will generate the second static electrical signal of the door leaf and store it separately in the processing unit 31 of the control module 3 for comparison reference. After that, when the door leaf is fully opened and the light field of the door leaf operation path 400 is entered by the sensing body, whether dynamic or static, the door leaf light reception module 2 will generate the second variable electrical signal of the door leaf. If the waveforms of the two second electrical signals are different when they are compared with each other in the processing unit 31, the control module 3 can make the automatic access device 200 maintain the open state; for the door leaf of the automatic access device 200, due to the closing and other speed operations, on the door leaf operation path 400, the operating door leaf will reflect a regularly varying reflected light, and the door leaf light reception module 2 outputs the third door leaf electrical signal and stores it separately in the processing unit 31 of the control module 3. After that, for the third door leaf electrical signal generated during each closing operation, it will be compared with the stored third door leaf electrical signal in the processing unit 31. If there are fluctuations with the same regular changes between the two, the processing unit 31 of the control module 3 can make the door leaf on the door leaf operation path 400 complete the closing action.
[0042] [Advantages of the Embodiment]
[0043] The advantages of the present invention are that the safety mechanism for comparing and sensing signals provided by the present invention includes at least one light emission module, at least one light reception module, and a control module. The light emission module includes at least one light emission component, and the light emission component can emit light. By applying the method of geometric optics, a light field range is formed on the access path of the automatic access device and corresponding light flux is generated. The control module includes a processing unit. After the light reception component receives the reflected light reflected back within the light field range and converts it into an electrical signal and transmits it to the processing unit, the processing unit judges whether there is a sensing body entering by using the change of the reflected light within the light field range, so as to provide the opening and closing control of the automatic access device. Therefore, the present invention can accurately detect and judge by using the change of the reflected light within the light field range. Even if there is a static sensing body, the door leaf can still be kept in the open position, ensuring that the door leaf can operate safely and reliably during closing, and having a better safety protection effect on passing personnel.
[0044] In addition, the light field range of the present invention can be located on the door leaf operation path of the automatic access device, and by using the change of the reflected light within the light field range, it is judged whether there is a sensing body entering the door leaf operation path of the automatic access device, and it can judge whether the sensing body located on the door leaf operation path of the automatic access device is the automatic access device itself, or a person or an object, so as to provide a safety light anti-pinch protection function.
[0045] The light field range of the present invention can be located on the operating path of the automatic access device. Since the door leaf closes at a constant speed during operation, a regularly varying door leaf reflected light and a third door leaf electrical signal will be generated and stored in the processing unit of the control module. Subsequently, each time the third door leaf electrical signal generated in the closed door state is input into the processing unit, it will be compared with the previously stored third door leaf electrical signal. If there are fluctuations with the same regular changes in the two door leaf electrical signals, the processing unit of the control module can cause the door leaf of the automatic access device to complete the closing action.
[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the patent protection scope of the present invention. Therefore, all equivalent changes made by using the content of the specification and drawings of the present invention are equally included in the scope of the rights protection of the present invention, and this is hereby stated.
Claims
1. A safety mechanism for comparing sensing signals, characterized in that: The safety mechanism for comparing the sensing signal is arranged inside a light quantity sensor of an automatic passage device and includes: At least one emitting convex lens set, the emitting convex lens set comprising at least one emitting convex lens; At least one light emitting module comprises at least one light emitting component, and the light emitting components respectively project light to the respective emitting convex lenses, project using a geometric optical method, and combine into a corresponding light field range and a corresponding light flux; At least one receiving convex lens set, the receiving convex lens set comprising at least one receiving convex lens; At least one light receiving module, the light receiving module includes at least one light receiving component and a photoelectric conversion component, the light flux in the light field range corresponds to the reflected light of the environment, and the method of geometric optics is applied to reflect the reflected light to the respective light receiving components through the receiving convex lens group, and the reflected light is converted into a corresponding electrical signal; and At least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the light receiving component converts the corresponding electrical signal to be input and stored in the processing unit; When no sensed object enters the light field, the light receiving module will output a static first environmental electrical signal and store it in the processing unit of the control module for comparison reference. When a sensed object enters the light field, whether the sensed object is dynamic or static, the light receiving module will generate a first variable electrical signal and compare it with the stored first environmental electrical signal in the processing unit. If the waveform of the first variable electrical signal is different from that of the first environmental electrical signal, the control module can make the automatic passage device maintain the state of opening the door. The light emitting module and the light receiving module correspond to project and sense the position of the door leaf moving in the automatic passage device to form a luminous flux in another door leaf light field range. When the door leaf is fully opened and no sensed object enters the door leaf light field range, the light receiving module will generate a second static electrical signal of the door leaf, and store it in the processing unit of the control module for comparison reference. Afterwards, when the door leaf is fully opened and a sensed object enters the door leaf light field, regardless of dynamic or static, the light receiving module will generate a second variable electrical signal of the door leaf, and compare it with the stored second static electrical signal in the processing unit. The waveform of the second variable electrical signal The waveform of the third door leaf electric signal is different from that of the second static electric signal, so the control module can make the automatic passage device maintain the state of opening the door; the door leaf of the automatic passage device will reflect a regularly changing reflected light within the operating range of the door leaf due to the operation of the door leaf at a speed such as closing the door, and the light receiving module outputs a third door leaf electric signal, which is also stored in the processing unit of the control module. After that, the third door leaf electric signal generated in each door closing operation will be compared with the stored third door leaf electric signal in the processing unit. If there are fluctuations with the same regular changes, the processing unit of the control module can make the door leaf of the automatic passage device complete the action of closing the door.
2. A safety mechanism for comparing sensing signals, characterized in that: The safety mechanism for comparing the sensing signal is arranged inside a light quantity sensor of an automatic passage device and includes: At least one emitting convex lens set, the emitting convex lens set comprising at least one emitting convex lens; At least one light emitting module comprises at least one light emitting component, and the light emitting components respectively project light to the respective emitting convex lenses, project using a geometric optical method, and combine into a corresponding light field range and a corresponding light flux; At least one receiving convex lens set, the receiving convex lens set comprising at least one receiving convex lens; At least one light receiving module, the light receiving module includes at least one light receiving component and a photoelectric conversion component, the light flux in the light field range corresponds to the reflected light of the environment, and the method of geometric optics is applied to reflect the reflected light to the respective light receiving components through the receiving convex lens group, and the reflected light is converted into a corresponding electrical signal; and At least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the light receiving component converts the corresponding electrical signal to be input and stored in the processing unit; When no sensed object enters the light field, the light receiving module will output a static first environmental electrical signal and store it in the processing unit of the control module for comparison reference. Later, when a sensed object enters the light field, whether the sensed object is dynamic or static, the light receiving module will generate a first variable electrical signal and compare it with the stored first environmental electrical signal in the processing unit. If the waveform of the first variable electrical signal is different from that of the first environmental electrical signal, the control module can enable the automatic passage device to maintain an open state.
3. A safety mechanism for comparing sensing signals, characterized in that: The safety mechanism for comparing the sensing signal is arranged inside a light quantity sensor of an automatic passage device and includes: At least one emitting convex lens set, the emitting convex lens set comprising at least one emitting convex lens; At least one light emitting module comprises at least one light emitting component, and the light emitting components respectively project light to the respective emitting convex lenses, project using a geometric optical method, and combine into a corresponding light field range and a corresponding light flux; At least one receiving convex lens set, the receiving convex lens set comprising at least one receiving convex lens; At least one light receiving module, the light receiving module includes at least one light receiving component and a photoelectric conversion component, the light flux in the light field range corresponds to the reflected light of the environment, and the method of geometric optics is applied to reflect the reflected light to the respective light receiving components through the receiving convex lens group, and the reflected light is converted into a corresponding electrical signal; and At least one control module, the light receiving module is electrically connected to the control module, the control module includes at least one processing unit, the processing unit includes an electronic circuit, a microcontroller and a memory, and the light receiving component converts the corresponding electrical signal to be input and stored in the processing unit; The light emitting module and the light receiving module correspond to project and sense the position of the door leaf moving in the automatic passage device to form a luminous flux in another door leaf light field range. When the door leaf is fully opened and no sensed object enters the door leaf light field range, the light receiving module will generate a second static electrical signal of the door leaf, and store it in the processing unit of the control module for comparison reference. Afterwards, when the door leaf is fully opened and a sensed object enters the door leaf light field, regardless of dynamic or static, the light receiving module will generate a second variable electrical signal of the door leaf, and compare it with the stored second static electrical signal in the processing unit. The waveform of the second variable electrical signal The waveform of the third door leaf electric signal is different from that of the second static electric signal, so the control module can make the automatic passage device maintain the state of opening the door; the door leaf of the automatic passage device will reflect a regularly changing reflected light within the operating range of the door leaf due to the operation of the door closing speed, and the light receiving module will output the third door leaf electric signal, and store it in the processing unit of the control module. After that, the third door leaf electric signal generated in each door closing operation will be compared with the stored third door leaf electric signal in the processing unit. If there are fluctuations with the same regular changes, the processing unit of the control module can make the door leaf of the automatic passage device complete the action of closing the door.
4. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The optical emitting components are provided in plurality, and the optical emitting components are electrically connected to a first circuit board. The optical receiving components are provided in plurality, and the optical receiving components are electrically connected to a second circuit board. The optical receiving components are electrically connected to the control module through the second circuit board.
5. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The light emitting module is arranged correspondingly to the rear side of the emitting convex lens group. The light emitted by the light emitting component is projected toward the traffic environment through the emitting convex lens to form a light field range corresponding to the luminous flux. The light receiving module is arranged correspondingly to the rear side of the receiving convex lens group. The light reflected back by the luminous flux within the light field range can be reflected to the light receiving component through the receiving convex lens.
6. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The transmitting convex lens and the receiving convex lens are Fresnel lenses.
7. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The luminous flux within the light field range can reflect static reflected light when no sensed object enters, which is converted into a static first electrical signal and stored in the database of the processing unit for comparison. Each type of reflected light of the luminous flux within the light field range corresponds to a state of the sensed object, including dynamic and static states of the sensed object.
8. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The database of the processing unit can store the reflected light of the luminous flux within the light field of the door leaf of the automatic passage device in the fully open, fully closed and moving states, and convert it into data of various door leaf electrical signals for comparison.
9. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The processing unit database can store multiple electrical signals for comparing the changes of reflected light of the luminous flux within the light field. Each change of reflected light within the light field corresponds to a state of the sensed object, including dynamic and static states of the sensed object.
10. The safety mechanism for comparing sensing signals according to claim 1, 2 or 3, characterized in that: The light emitting module includes at least one visible light emitting module, which includes at least one visible light emitting component and at least one visible light emitting convex lens, and uses the method of geometric optics to emit visible light to generate at least one visible light projection point; the visible light emitting module is a laser emitting module, wherein the laser emitting component and the visible light emitting convex lens can be integrally enclosed in a device and emit at least one laser projection point; the visible light module corresponds to the position projected on the inner side of the leading edge of the light field range, and displays the relative position of the light field range and the automatic passage device.