Multi-channel photoelectric detection device and object detection equipment

Abstract

The utility model discloses a multichannel photoelectric detection device and object detection equipment, and relates to the field of object detection.The multichannel photoelectric detection device comprises N groups of photoelectric sensing modules, a light-emitting part and a light-receiving part in the same group of photoelectric sensing modules are oppositely arranged at a preset distance, a power supply is connected with a first end of a controllable switch module through a power supply interface, and a second end of the controllable switch module is connected with a second end of the controllable switch module; the second end of the controllable switch module is connected with the first ends of the light-emitting modules in a one-to-one correspondence mode, and the second ends of the light-emitting modules are grounded. After the light receiving modules are connected in parallel, one end of a circuit is connected with a power supply through a power interface and the other end is grounded; the control module enables the light emitting module in the at least one group of photoelectric sensing modules to be electrified by controlling the on-off of the controllable switch module, the light receiving part is switched on when receiving the light intensity emitted by the light emitting part, otherwise, the light receiving part is switched off, and the on-off state of the light receiving part can be detected by the control module. The device can meet the detection requirements of multiple close position points at the same moment, and is beneficial to the application requirements of multiple fields.

Description

Technical Field

[0001] The utility model relates to the technical field of object detection, in particular to a multi-channel photoelectric detection device and object detection equipment. Background Art

[0002] Photoelectric sensors are devices that detect the presence or absence of objects based on the photoelectric effect. They have application needs in many fields, but existing photoelectric sensors are all single-channel sensors, which limits their practical use and has a small scope of application. Especially when faced with the need to detect multiple close points at the same time, they can only be achieved by setting up multiple photoelectric sensors, which is costly and not conducive to practical application. Utility Model Content

[0003] In view of this, the present invention provides a multi-channel photoelectric detection device and object detection equipment, which provides multiple detection paths, realizes the expansion of detection functions, and is conducive to adapting to application needs in multiple fields.

[0004] To solve the above technical problems, the present invention provides a multi-channel photoelectric detection device, comprising a board and a power interface, a controllable switch module, a control module, and N groups of photoelectric sensing modules disposed on the board; each group of the photoelectric sensing modules comprises a light-emitting module and a light-receiving module; within the same group of photoelectric sensing modules, the light-emitting portion of the light-emitting module and the light-receiving portion of the light-receiving module are disposed opposite each other and at a preset distance, where N is an integer greater than 1;

[0005] The power supply is connected to the first end of the controllable switch module through the power interface, and the second end of the controllable switch module is connected to the first end of the light-emitting module in each group of the photoelectric sensing module in a one-to-one correspondence; the second end of the light-emitting module is grounded;

[0006] The light receiving modules in each group of the photoelectric sensing modules are connected in parallel, and one end of the parallel circuit is connected to the power supply through the power interface, and the other end of the parallel circuit is grounded;

[0007] The control module is connected to the controllable switch module and each of the light receiving modules, and is used to control the on / off state of the controllable switch module to control the power supply of the light emitting module in at least one group of the photoelectric sensing modules so that the corresponding light emitting part emits light, or to detect the on / off state of the light receiving part corresponding to the light emitting part currently emitting light;

[0008] The light receiving portion is used to be turned on when receiving the light intensity emitted by the corresponding light emitting portion, and turned off when not receiving the light intensity.

[0009] Furthermore, each group of the photoelectric sensing modules also includes a prompt module;

[0010] The prompt module is connected in series with the light emitting module and is used to prompt the light emitting module whether it is powered on.

[0011] Furthermore, the prompt module is an indicator light.

[0012] Furthermore, each group of the photoelectric sensing modules further includes a first adjustable resistor;

[0013] The first adjustable resistor is connected in series with the light emitting module.

[0014] Furthermore, each group of the photoelectric sensing modules further includes a second adjustable resistor;

[0015] The second adjustable resistor is connected in series with the light receiving module.

[0016] Furthermore, it also includes a first shell and a second shell arranged opposite to each other;

[0017] N groups of first accommodating cavities are provided in the first housing, each of the first accommodating cavities includes a first slot and a first through hole, the first through hole is provided on a side close to the second housing and is perpendicular to the first slot, the first slot is used to accommodate the light-emitting module, and the light-emitting portion is located at the first through hole;

[0018] N groups of second accommodating cavities are provided in the second housing, each of the second accommodating cavities includes a second slot and a second through hole, the second through hole is provided on a side close to the first housing and is perpendicular to the second slot, the second slot is used to accommodate the light receiving module, and the light receiving part is located at the second through hole;

[0019] The first through hole and the second through hole for accommodating the same group of photoelectric sensing modules are arranged opposite to each other and are at a preset distance from each other.

[0020] Furthermore, the power supply is an external power supply, the output end of the external power supply is connected to the power interface, and the multi-channel photoelectric detection device further includes a voltage conversion module;

[0021] The input end of the voltage conversion module is connected to the power interface, and the output end of the voltage conversion module is respectively connected to the first end of the controllable switch module and one end of the parallel circuit, for converting the output voltage of the external power supply.

[0022] Furthermore, the controllable switch module is an N-channel selection switch.

[0023] Furthermore, the controllable switch module includes N controllable switches;

[0024] The first ends of the N controllable switches are connected with the power supply interface respectively, the second ends of the N controllable switches are connected with the first ends of the light emitting modules respectively, and the control ends of the N controllable switches are connected with the control module.

[0025] To solve the above technical problems, the utility model provides a kind of object detection equipment, including the multichannel photoelectric detection device as described above.

[0026] The application provides a multichannel photoelectric detection device and an object detection equipment.The device includes a board card, a power supply interface, a controllable switch module, a control module and N groups of photoelectric sensing modules arranged on the board card.The light emitting part and the light receiving part in the same group of photoelectric sensing modules are oppositely arranged and spaced apart by a predetermined distance.The power supply is connected with the first end of the controllable switch module through the power supply interface.The second end of the controllable switch module is connected with the first end of each light emitting module one by one.The second end of the light emitting module is grounded.Each light receiving module is connected in parallel and one end of the parallel circuit is connected with the power supply through the power supply interface and the other end is grounded.The control module controls the on-off of the controllable switch module to make the light emitting module in at least one group of photoelectric sensing modules powered on.The light receiving part is turned on when it receives the light intensity emitted by the light emitting part and is turned off otherwise.The on-off state of the light receiving part can be detected by the control module, so that the device can meet the detection requirements of multiple similar positions at the same time, realize the expansion of detection function, adapt to the application requirements of multiple fields and facilitate practical application.

[0027] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings described herein are used to provide further understanding of the application, constitute a part of the application, the illustrative embodiments of the application and their description are used to explain the application, and do not constitute an improper limitation on the application.In the drawings:

[0029] Figure 1 It is a circuit principle schematic view of the multichannel photoelectric detection device provided by the utility model;

[0030] Figure 2 It is a structure schematic view of the multichannel photoelectric detection device provided by the utility model;

[0031] Figure 3 It is a process schematic view of placing each group of photoelectric sensing modules to the shell body provided by the utility model;

[0032] Figure 4This is a schematic diagram of a finished product after a photoelectric sensing module provided by the present invention is placed in an outer shell;

[0033] Figure 5 This is a schematic diagram of the arrangement of the first slot and the first through hole on the first shell provided by the utility model. DETAILED DESCRIPTION

[0034] The core of the utility model is to provide a multi-channel photoelectric detection device and object detection equipment, which provides multiple detection paths, realizes the expansion of detection functions, and is conducive to adapting to application needs in multiple fields.

[0035] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0036] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "first," "second," and the like generally distinguish objects of a class and do not limit the number of objects. For example, the first object may be one or more.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the circuit principle of a multi-channel photoelectric detection device provided in this application. Figure 2 This is a schematic structural diagram of a multi-channel photoelectric detection device provided in this application.

[0038] The multi-channel photoelectric detection device includes a board 1 and a power interface 2, a controllable switch module 3, a control module 4, and N groups of photoelectric sensing modules disposed on the board 1. Each group of photoelectric sensing modules includes a light-emitting module and a light-receiving module. Within the same group of photoelectric sensing modules, the light-emitting portion of the light-emitting module and the light-receiving portion of the light-receiving module are disposed opposite each other and separated by a preset distance, where N is an integer greater than 1.

[0039] The power supply is connected to the first end of the controllable switch module 3 through the power interface 2, and the second end of the controllable switch module 3 is connected to the first end of the light-emitting module in each group of photoelectric sensing modules in a one-to-one correspondence; the second end of the light-emitting module is grounded;

[0040] The light receiving modules in each group of photoelectric sensing modules are connected in parallel, and one end of the parallel circuit is connected to the power supply through the power interface 2, and the other end of the parallel circuit is grounded;

[0041] The control module 4 is connected to the controllable switch module 3 and each light receiving module respectively, and is used to control the on and off of the controllable switch module 3 to control the power supply of the light emitting module in at least one group of photoelectric sensing modules to make the corresponding light emitting part emit light, or to detect the on and off state of the light receiving part corresponding to the light emitting part currently emitting light;

[0042] The light receiving portion is used to be turned on when receiving the light intensity emitted by the corresponding light emitting portion, and to be turned off when not receiving the light intensity.

[0043] In this embodiment, a multi-channel photoelectric detection device is provided. Figure 1 , Figure 1 The working principle of the device is demonstrated by taking N=3 as an example. In actual application, the specific value of N can be set according to the detection requirements.

[0044] Specifically, the board 1 is a PCB board, and the power interface 2 is used to connect to the power supply. Optionally, the multi-channel photoelectric detection device itself may include an internal power supply whose output end is connected to the power interface 2 to power the modules in the device; or in actual application, the output end of the external power supply may be connected to the power interface 2 to power the modules in the device; the output voltage of the power supply includes but is not limited to Figure 1 5V shown.

[0045] The first end of the light emitting portion is connected to the first end of the light emitting module and is fixed on the board 1. The second end of the light emitting portion is connected to the second end of the light emitting module and is fixed on the board 1. More specifically, each light emitting portion can be as follows: Figure 1 The first light emitting diode LED1, the second light emitting diode LED2 and the third light emitting diode LED3 are shown; the first end of the light receiving part, that is, the first end of the light receiving module, is fixed on the board 1, and the second end of the light receiving part, that is, the second end of the light receiving module, is fixed on the board 1. More specifically, the light receiving part can be as follows Figure 1 The first phototransistor Q1, the second phototransistor Q2 and the third phototransistor Q3 are shown.

[0046] The control module 4 is connected to each light receiving module to detect the on / off state of the light receiving part corresponding to the current light emitting part. For details, please refer to Figure 1 , limited by the focus of the picture display, Figure 1The control module 4 is shown in the form of a circle plus a figure mark, and the connection line between the control module 4 and the light receiving module is omitted to avoid confusion in the connection. However, the connection points between the light receiving module and the control module 4 are marked, that is, the OUT1 point at the collector of the first phototransistor Q1 is the first detection point connected to the control module 4, the OUT2 point at the collector of the second phototransistor Q2 is the second detection point connected to the control module 4, and the OUT3 point at the collector of the third phototransistor Q3 is the third detection point connected to the control module 4.

[0047] The implementation principle of the device is: when the control module 4 controls the light-emitting modules of one or several channels to receive power by controlling the controllable switch module 3, the light-emitting part on the light-emitting module emits a light intensity. When there is no object blocking the light-emitting part and the corresponding light-receiving part within the preset distance between the light-emitting part and the corresponding light-receiving part, the corresponding light-receiving part can receive the light intensity and turn on, and the control module 4 will detect a low-level signal; when there is an object blocking the light, the corresponding light-receiving part will be turned off due to the lack of light intensity, and the control module 4 will detect a high-level signal.

[0048] For more details, please refer to Figure 2 , Figure 2 The schematic diagram of the layout of each module on the PCB is shown. Due to the limitation of the display angle and focus of the picture, the layout diagram of the control module 4 is omitted. Figure 2 What is shown is a schematic structural diagram of a finished product obtained after three groups of photoelectric sensing modules are placed in an outer shell 7. The outer shell 7 has been described in detail in the following embodiments and will not be described again here.

[0049] In summary, the present application provides a multi-channel photoelectric detection device that can meet the detection needs of multiple similar positions at the same time, provides multiple detection paths, realizes the expansion of detection functions, is conducive to adapting to application needs in multiple fields, and is conducive to practical applications.

[0050] Based on the above embodiment:

[0051] In some embodiments, each group of photoelectric sensing modules further includes a prompt module;

[0052] The prompt module is connected in series with the light emitting module and is used to prompt whether the light emitting module is powered.

[0053] In this embodiment, the prompt module can output different prompt signals when the corresponding light-emitting module is powered on and is in a working state, and when the corresponding light-emitting module is not powered on and is in a non-working state, so that relevant personnel can promptly understand which group of photoelectric sensing modules is currently working, which is beneficial to practical applications.

[0054] In some embodiments, the prompt module is an indicator light.

[0055] In this embodiment, the indicator light can be illuminated when the corresponding light emitting module is powered and in the working state, and not illuminated when the corresponding light emitting module is not powered and in the non-working state, thereby simply and reliably realizing the prompt of which group of photoelectric sensing modules is in the working state according to whether the indicator light is illuminated. Please refer to Figure 2 , Figure 2 Schematic diagrams of the positions of the indicator lights 61 in the first group of photoelectric sensing modules on the board 1, the positions of the indicator lights 62 in the second group of photoelectric sensing modules on the board 1, and the positions of the indicator lights 63 in the third group of photoelectric sensing modules on the board 1 are given in FIG.

[0056] In some embodiments, each group of photoelectric sensing modules further includes a first adjustable resistor;

[0057] The first adjustable resistor is connected in series with the light emitting module.

[0058] In this embodiment, the setting of the first adjustable resistor can achieve current limiting to protect the safe operation of the circuit. For details, please refer to Figure 1 , Figure 1 The resistance of the first adjustable resistor R1 in the first group of photoelectric sensing modules is set to 200 ohms, the resistance of the first adjustable resistor R2 in the second group of photoelectric sensing modules is set to 200 ohms, and the resistance of the first adjustable resistor R3 in the third group of photoelectric sensing modules is set to 200 ohms, thereby ensuring that the current flowing through the detection path is 4 mA. It can be understood that the specific settings of the resistance values ​​can be determined according to the actual safe power usage requirements.

[0059] In some embodiments, each group of photoelectric sensing modules further includes a second adjustable resistor;

[0060] The second adjustable resistor is connected in series with the light receiving module.

[0061] In this embodiment, the second adjustable resistor is used to limit the current to protect the safe operation of the circuit. For details, please refer to Figure 1 , Figure 1 The resistance of the second adjustable resistor R4 in the first photoelectric sensing module group is set to 10K ohms, the resistance of the second adjustable resistor R5 in the second photoelectric sensing module group is set to 10K ohms, and the resistance of the second adjustable resistor R6 in the third photoelectric sensing module group is set to 10K ohms. It is understood that the specific resistance settings can be determined based on actual safety requirements for electricity use.

[0062] In some embodiments, the first housing 71 and the second housing 72 are arranged opposite to each other;

[0063] The first shell 71 is provided with N groups of first accommodating cavities, each of which comprises a first slot 711 and a first through hole 712. The first through hole 712 is arranged on the side close to the second shell 72 and is arranged perpendicularly to the first slot 711. The first slot 711 is used for accommodating a light-emitting module, and the light-emitting part is located at the first through hole 712.

[0064] The second shell 72 is provided with N groups of second accommodating cavities, each of which comprises a second slot 721 and a second through hole. The second through hole is arranged on the side close to the first shell 71 and is arranged perpendicularly to the second slot 721. The second slot 721 is used for accommodating a light-receiving module, and the light-receiving part is located at the second through hole.

[0065] The first through hole 712 and the second through hole for accommodating the same group of photoelectric response modules are arranged opposite to each other and are apart from each other by a predetermined distance.

[0066] In this embodiment, the N groups of first accommodating cavities and the N groups of second accommodating cavities are arranged one-to-one. The light-emitting part is located at the first through hole 712, so that the light intensity emitted by the light-emitting part is irradiated to the corresponding light-receiving part through the first through hole 712. The light-receiving part is located at the corresponding second through hole, so as to receive the light intensity emitted by the light-emitting part through the second through hole.

[0067] In addition, the device can further comprise a U-shaped shell, which is integrally formed with the first shell 71 and the second shell 72 to obtain an outer shell 7. Please further refer to Figure 3 , Figure 3 A process diagram for placing each group of photoelectric response modules into the outer shell 7 is provided in this application. Here, still taking N=3 as an example, the light-emitting module 51 in the first group of photoelectric response modules will be placed into the first slot 711, and the light-emitting part 511 in the light-emitting module 51 is located at the first through hole 711. The light-receiving module 52 in the first group of photoelectric response modules will be placed into the second slot 721, and the light-receiving part in the light-receiving module is located at the second through hole. The remaining two groups of photoelectric response modules can be placed into the corresponding slots in the same way, which will not be described here. More specifically, the light-emitting module and the light-receiving module can be installed into the integrally formed outer shell 7 through assembly engineering processing technology. After installation is completed, the finished product is shown in Figure 4 .

[0068] It should be noted that please refer to Figure 5 , Figure 5 The first shell 71 is taken as an example to show the perspective view obtained when observing from the plane of the side of the first shell 71 close to the second shell 72, which clearly shows the arrangement of the first slot 711 and the first through hole 712 in the first accommodating cavity. Similarly, the perspective view obtained when observing from the plane of the side of the second shell 72 close to the first shell 71 is similar to Figure 5 , which will not be described here.

[0069] It can be seen that the above arrangement can protect the light emitting module and the light receiving module from being damaged by external collision.

[0070] In some embodiments, the power supply is an external power supply, the output end of the external power supply is connected to the power interface 2, and the multi-channel photoelectric detection device further includes a voltage conversion module;

[0071] The input end of the voltage conversion module is connected to the power interface 2, and the output end of the voltage conversion module is respectively connected to the first end of the controllable switch module 3 and one end of the parallel circuit, for converting the output voltage of the external power supply.

[0072] In this embodiment, considering that the output voltage of the external power supply may not meet the power supply requirements of each power supply module in the device, a voltage conversion module is provided to achieve voltage conversion to ensure safe use of electricity and avoid damage to devices.

[0073] In some embodiments, the controllable switch module 3 is an N-channel gating switch.

[0074] In this embodiment, the common end of the N-channel selection switch is connected to the power supply interface 2, and the N output ends of the N-channel selection switch are respectively connected one-to-one with the first ends of the N light-emitting modules. Through multi-gear switching, the user is provided with multiple detection channels to choose from, which is conducive to flexible adaptation to various detection situations.

[0075] In some embodiments, the controllable switch module 3 includes N controllable switches;

[0076] The first ends of the N controllable switches are respectively connected to the power interface 2 , the second ends of the N controllable switches are respectively connected to the first ends of the light emitting modules in a one-to-one correspondence, and the control ends of the N controllable switches are connected to the control module 4 .

[0077] In this embodiment, specifically, the controllable switch here includes but is not limited to MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), which can be selected according to actual application requirements, thereby reliably realizing the detection of objects at multiple close points at the same time.

[0078] The utility model also provides an object detection device, comprising the multi-channel photoelectric detection device as described above.

[0079] For an introduction to the object detection equipment provided in this application, please refer to the above-mentioned embodiment of the multi-channel photoelectric detection device, which will not be repeated here.

[0080] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

[0082] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A multi-channel photoelectric detection device, characterized in that: The system comprises a board and a power interface, a controllable switch module, a control module, and N groups of photoelectric sensing modules disposed on the board; each group of photoelectric sensing modules comprises a light-emitting module and a light-receiving module; within the same group of photoelectric sensing modules, the light-emitting portion of the light-emitting module and the light-receiving portion of the light-receiving module are disposed opposite to each other and at a preset distance, where N is an integer greater than 1; The power supply is connected to the first end of the controllable switch module through the power interface, and the second end of the controllable switch module is connected to the first end of the light-emitting module in each group of the photoelectric sensing module in a one-to-one correspondence; the second end of the light-emitting module is grounded; The light receiving modules in each group of the photoelectric sensing modules are connected in parallel, and one end of the parallel circuit is connected to the power supply through the power interface, and the other end of the parallel circuit is grounded; The control module is connected to the controllable switch module and each of the light receiving modules, and is used to control the on / off state of the controllable switch module to control the power supply of the light emitting module in at least one group of the photoelectric sensing modules so that the corresponding light emitting part emits light, or to detect the on / off state of the light receiving part corresponding to the light emitting part currently emitting light; The light receiving portion is used to be turned on when receiving the light intensity emitted by the corresponding light emitting portion, and turned off when not receiving the light intensity.

2. The multi-channel photoelectric detection device according to claim 1, wherein: Each group of photoelectric sensing modules also includes a prompt module; The prompt module is connected in series with the light emitting module and is used to prompt the light emitting module whether it is powered on.

3. The multi-channel photoelectric detection device according to claim 2, wherein: The prompt module is an indicator light.

4. The multi-channel photoelectric detection device according to claim 1, wherein: Each group of the photoelectric sensing modules further includes a first adjustable resistor; The first adjustable resistor is connected in series with the light emitting module.

5. The multi-channel photoelectric detection device according to claim 1, wherein: Each group of the photoelectric sensing modules further includes a second adjustable resistor; The second adjustable resistor is connected in series with the light receiving module.

6. The multi-channel photoelectric detection device according to claim 1, wherein: Also includes a first shell and a second shell arranged opposite to each other; N groups of first accommodating cavities are provided in the first housing, each of the first accommodating cavities includes a first slot and a first through hole, the first through hole is provided on a side close to the second housing and is perpendicular to the first slot, the first slot is used to accommodate the light-emitting module, and the light-emitting portion is located at the first through hole; N groups of second accommodating cavities are provided in the second housing, each of the second accommodating cavities includes a second slot and a second through hole, the second through hole is provided on a side close to the first housing and is perpendicular to the second slot, the second slot is used to accommodate the light receiving module, and the light receiving part is located at the second through hole; The first through hole and the second through hole for accommodating the same group of photoelectric sensing modules are arranged opposite to each other and are at a preset distance from each other.

7. The multi-channel photoelectric detection device according to claim 1, wherein: The power supply is an external power supply, the output end of the external power supply is connected to the power interface, and the multi-channel photoelectric detection device further includes a voltage conversion module; The input end of the voltage conversion module is connected to the power interface, and the output end of the voltage conversion module is respectively connected to the first end of the controllable switch module and one end of the parallel circuit, for converting the output voltage of the external power supply.

8. The multi-channel photoelectric detection device according to any one of claims 1 to 7, characterized in that: The controllable switch module is an N-channel gating switch.

9. The multi-channel photoelectric detection device according to any one of claims 1 to 7, characterized in that: The controllable switch module includes N controllable switches; The first ends of the N controllable switches are respectively connected to the power interface, the second ends of the N controllable switches are respectively connected to the first ends of the light emitting modules in a one-to-one correspondence, and the control ends of the N controllable switches are connected to the control module.

10. An object detection device, characterized in that: The multi-channel photoelectric detection device comprises the multi-channel photoelectric detection device according to any one of claims 1 to 9.

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