Automatic dust removal system for outdoor terminal equipment and outdoor terminal equipment

Abstract

The utility model relates to the technical field of electronic products, and provides an automatic dust removal system of outdoor terminal equipment and the outdoor terminal equipment. The automatic dust removal system for the outdoor terminal equipment comprises a dust sensor, a control module and a cooling fan, the dust sensor is connected with the control module, and the control module is connected with the cooling fan. The cooling fan is configured to be arranged in a cooling air duct of the outdoor terminal equipment; the dust sensor is used for detecting the dust concentration in the gas flowing through the heat dissipation air duct; the control module is used for controlling the cooling fan to rotate reversely under the condition that the dust concentration is larger than a preset value. According to the dust concentration in the outdoor terminal equipment, self-adaptive dust removal operation can be carried out by utilizing the cooling fan without manual intervention, so that the normal use of the outdoor terminal equipment is ensured, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to an automatic dust removal system for outdoor terminal equipment and outdoor terminal equipment. Background Art

[0002] With the development of data information, a large number of outdoor terminal devices have been widely promoted and applied. These outdoor terminal devices integrate multiple functions such as detection, display, and early warning, bringing many conveniences to people's lives.

[0003] However, in actual applications, due to the harsh operating environment of outdoor terminal equipment, a large amount of dust will adhere to the inside of the outdoor terminal equipment during long-term operation, which will affect the stability of the equipment operation and reduce the service life of the equipment.

[0004] In the related art, the dust inside the outdoor terminal equipment is mainly cleaned by disassembling the equipment and replacing the filter screen regularly. This dust removal method is cumbersome to operate, wastes manpower and material resources, and frequent disassembly and assembly will also affect the performance of the equipment. Utility Model Content

[0005] The utility model provides an outdoor terminal equipment automatic dust removal system and outdoor terminal equipment, which are used to solve or improve the current problem that it is inconvenient to clean the dust inside the outdoor terminal equipment.

[0006] In a first aspect, the utility model provides an automatic dust removal system for outdoor terminal equipment, comprising: a dust sensor, a control module and a cooling fan;

[0007] The dust sensor is connected to the control module, and the control module is connected to the cooling fan; the cooling fan is configured to be arranged in a cooling air duct of an outdoor terminal device;

[0008] The dust sensor is used to detect the dust concentration in the gas flowing through the heat dissipation air duct; the control module is used to control the heat dissipation fan to rotate in the reverse direction when the dust concentration is greater than a preset value.

[0009] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, the dust sensor includes an infrared light emitting component and a photosensitive component;

[0010] The infrared light emitting component and the photosensitive component are arranged in the heat dissipation duct at intervals, and the infrared light emitting component and the photosensitive component are electrically connected to the control module respectively;

[0011] The infrared light emitting component is used to emit infrared light under the control of the control module, and the infrared light generates reflected light after irradiating the dust in the air; the photosensitive component is used to receive the reflected light and feed back a photosensitive signal to the control module;

[0012] Wherein, the control module is used to determine the dust concentration according to the light-sensitive signal.

[0013] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, the infrared light-emitting component and the photosensitive component are arranged at intervals along the extension direction of the heat dissipation air duct; the line connecting the light-emitting end of the infrared light-emitting component and the photosensitive end of the photosensitive component is arranged at an angle to the extension direction of the heat dissipation air duct.

[0014] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, the infrared light emitting component includes a driving circuit and an infrared light emitting diode, the control module is electrically connected to the driving circuit, and the driving circuit is electrically connected to the infrared light emitting diode;

[0015] The photosensitive component includes a phototube and an amplifier circuit, the phototube is electrically connected to the amplifier circuit, and the amplifier circuit is electrically connected to the control module.

[0016] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, a plurality of dust sensors are provided, and the plurality of dust sensors are arranged in sequence along the extension direction of the heat dissipation duct;

[0017] The control module is used to determine the dust concentration according to the light-sensing signals fed back by the multiple dust sensors.

[0018] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, the heat dissipation fan comprises a first heat dissipation fan and a second heat dissipation fan;

[0019] The first cooling fan is arranged at the air inlet end of the cooling air duct, and the second cooling fan is arranged at the air outlet end of the cooling air duct;

[0020] The control module is used to control the first cooling fan and the second cooling fan to rotate forward or reverse synchronously.

[0021] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, it also includes: an early warning module; the control module and the early warning module are electrically connected, and the control module is used to control the early warning module to give an early warning indication when the dust concentration is greater than a preset value.

[0022] According to an automatic dust removal system for outdoor terminal equipment provided by the utility model, it also includes: a display module; the control module and the display module are electrically connected, and the display module is used to display the dust concentration collected by the dust sensor.

[0023] According to the utility model, an automatic dust removal system for outdoor terminal equipment further includes: a wireless communication module; the control module is electrically connected to the wireless communication module, and the wireless communication module is configured to communicate with the wireless terminal equipment;

[0024] The wireless communication module is used to receive an active dust removal instruction from the wireless terminal device, and the control module is used to control the cooling fan to rotate in the opposite direction according to the active dust removal instruction.

[0025] In a second aspect, the utility model further provides an outdoor terminal device, comprising: a housing and an automatic dust removal system for the outdoor terminal device as described in any one of the above items arranged in the housing.

[0026] The automatic dust removal system for outdoor terminal equipment and the outdoor terminal equipment provided by the utility model can configure a dust sensor, a control module and a cooling fan for the outdoor terminal equipment. The cooling fan can be used to perform adaptive dust removal operations according to the dust concentration in the outdoor terminal equipment. Without human intervention, the dust concentration in the outdoor terminal equipment can be kept within a reasonable set range, thereby ensuring the normal use of the outdoor terminal equipment and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 This is a control structure block diagram of the automatic dust removal system for outdoor terminal equipment provided by the utility model;

[0029] Figure 2 This is a circuit structure diagram of the dust sensor provided by the utility model;

[0030] Figure 3 This is a circuit structure diagram of the dust sensor and control module provided by the utility model;

[0031] Figure 4 This is a circuit structure diagram of the photosensitive component in the dust sensor provided by the utility model;

[0032] Figure 5 It is a three-dimensional structural schematic diagram of the outdoor terminal equipment provided by the utility model;

[0033] Figure 6 It is a rear view structural schematic diagram of the outdoor terminal device provided by the utility model;

[0034] Reference numerals:

[0035] 1. Dust sensor; 11. Driving circuit; 12. Infrared light emitting diode; 13. Photoelectric tube; 14. Amplifying circuit;

[0036] 2. Control module; 3. Analog-to-digital converter; 4. Cooling fan;

[0037] 5. Early warning module; 51. Buzzer; 52. Alarm light;

[0038] 6. Display module; 7. Wireless communication module;

[0039] 10. Dust; 100. Casing; 101. Air inlet; 102. Air outlet. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely 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.

[0041] Combine the following Figure 1-Figure 6 , the outdoor terminal equipment automatic dust removal system and the outdoor terminal equipment provided by the embodiment of the utility model are described in detail through specific embodiments and their application scenarios.

[0042] In the first aspect, Figure 1 As shown, an embodiment of the utility model provides an automatic dust removal system for outdoor terminal equipment, including: a dust sensor 1, a control module 2 and a cooling fan 4.

[0043] The dust sensor 1 is connected to the control module 2, and the control module 2 is connected to the cooling fan 4; the cooling fan 4 is configured to be arranged in a cooling air duct of the outdoor terminal device.

[0044] The dust sensor 1 is used to detect the dust concentration in the gas flowing through the heat dissipation air duct; the control module 2 is used to control the heat dissipation fan 4 to rotate in the reverse direction when the dust concentration is greater than a preset value.

[0045] It is understandable that the outdoor terminal device includes a housing 100 and functional components. The housing 100 has an air inlet, an air outlet, and a heat dissipation duct connected between the air inlet and the air outlet. The functional components and the heat dissipation fan 4 are both arranged in the heat dissipation duct.

[0046] The dust sensor 1 can be arranged at the air inlet end corresponding to the heat dissipation duct, at the air outlet end corresponding to the heat dissipation duct, or inside the heat dissipation duct, without specific limitation. The dust sensor 1 is used to continuously monitor the dust concentration in the gas flowing through the heat dissipation duct; wherein, the dust sensor 1 can adopt a laser dust sensor known in the art.

[0047] When the outdoor terminal equipment is working normally, the cooling fan 4 can be configured to rotate in a clockwise direction. At this time, the cooling fan 4 drives the outside air into the cooling air duct from the air inlet end, and then performs air convection heat dissipation with the functional components, and then is discharged from the air outlet end; correspondingly, when the cooling fan 4 rotates in a counterclockwise direction, the cooling fan 4 can drive the outside air into the cooling air duct from the air outlet end, and then performs air convection heat dissipation with the functional components, and then is discharged from the air inlet end.

[0048] The control module 2 may be a single chip microcomputer, a PLC controller, etc., which are well known in the art, and the cooling fan 4 may be an axial flow fan or a centrifugal fan, which is not specifically limited.

[0049] Furthermore, the control module 2 can control the cooling fan 4 to switch from rotating in a clockwise direction to rotating in a counterclockwise direction, or control the cooling fan 4 to switch from rotating in a counterclockwise direction to rotating in a clockwise direction, so as to control the cooling fan 4 to rotate in the reverse direction.

[0050] For the outdoor terminal equipment shown in this embodiment, the cooling fan 4 can be used to perform adaptive dust removal operations according to the dust concentration in the outdoor terminal equipment. Without human intervention, the dust concentration in the outdoor terminal equipment can be kept within a reasonable set range, thereby ensuring the normal use of the outdoor terminal equipment and extending the service life of the equipment.

[0051] In some embodiments, Figure 2 As shown, in order to facilitate online monitoring of the dust concentration in the air in the heat dissipation duct, the dust sensor 1 of this embodiment can be configured to include an infrared light-emitting component and a photosensitive component.

[0052] The infrared light emitting component and the photosensitive component are arranged in the heat dissipation duct at intervals, and the infrared light emitting component and the photosensitive component are electrically connected to the control module 2 respectively.

[0053] The infrared light emitting component is used to emit infrared light under the control of the control module 2, and the infrared light generates reflected light after irradiating the dust in the air; the photosensitive component is used to receive the reflected light and feed back the photosensitive signal to the control module 2. Among them, the control module 2 is used to determine the dust concentration according to the photosensitive signal.

[0054] Specifically, the control module 2 can be configured to include a single-chip microcomputer, and the infrared light-emitting component can use a diode that can emit infrared light or other infrared lamps. The single-chip microcomputer and the infrared light-emitting component are electrically connected. The single-chip microcomputer sends a control signal to the infrared light-emitting component to control the infrared light-emitting component to start running and emit infrared light into the heat dissipation duct.

[0055] like Figure 2 and Figure 3 As shown, since the air flowing in the heat dissipation duct usually contains dust, after the infrared light emitted by the infrared light emitting component irradiates the surface of the dust 10, the infrared light will be diffusely reflected on the surface of the dust 10 and generate reflected light, and then the emitted light is received by the photosensitive component. Among them, the greater the concentration of dust in the air, the stronger the reflection of the infrared light under the action of the dust, so the concentration of the dust can be characterized by the intensity of the reflected light.

[0056] The photosensitive component can be an optical device that is sensitive to reflected light, such as a photoelectric tube or a photoresistor. The photosensitive component is electrically connected to the single-chip microcomputer through the analog-to-digital converter 3. Among them, the photosensitive signal fed back by the photosensitive component to the control module 2 can be understood as the electrical signal output by the photosensitive component under the triggering of the reflected light.

[0057] Optionally, in actual applications, the photosensitive component converts the light signal received from the reflected light into an electrical signal, the analog-to-digital converter 3 performs analog-to-digital conversion on the electrical signal, and transmits the converted digital signal to the single-chip microcomputer, which processes the digital signal to obtain the dust concentration in the gas flowing through the heat dissipation duct.

[0058] In some embodiments, the infrared light emitting component and the photosensitive component are spaced apart along the extension direction of the heat dissipation duct; the line connecting the light emitting end of the infrared light emitting component and the photosensitive end of the photosensitive component is arranged at an angle to the extension direction of the heat dissipation duct.

[0059] It is understandable that in the heat dissipation duct, a heat dissipation space with a length of L is provided along the flow direction of the gas, the dust sensor 1 is arranged in the heat dissipation space, and the distance between the infrared light emitting component and the photosensitive component is L.

[0060] At the same time, the light-emitting end of the infrared light-emitting component and the photosensitive end of the photosensitive component are arranged relatively to each other, but the infrared light-emitting component and the photosensitive component are arranged on both sides of the central axis of the heat dissipation space. For example, the infrared light-emitting component is arranged on the first side of the heat dissipation space, and the photosensitive component is arranged on the second side of the heat dissipation space. This makes the connection line between the light-emitting end of the infrared light-emitting component and the photosensitive end of the photosensitive component be arranged at an angle to the extension direction of the heat dissipation duct.

[0061] Based on the above settings, in the heat dissipation space, the light-emitting end of the infrared light-emitting component and the photosensitive end of the photosensitive component are diagonally arranged. This design ensures that the detection range of the dust sensor 1 covers the entire heat dissipation space, which facilitates online monitoring of the dust concentration in the gas flowing through the heat dissipation space.

[0062] In some embodiments, Figure 2 and Figure 3 As shown, the infrared light emitting component includes a driving circuit 11 and an infrared light emitting diode 12, the control module 2 and the driving circuit 11 are electrically connected, and the driving circuit 11 and the infrared light emitting diode 12 are electrically connected.

[0063] The photosensitive component includes a photoelectric tube 13 and an amplifier circuit 14 . The photoelectric tube 13 and the amplifier circuit 14 are electrically connected. The amplifier circuit 14 and the control module 2 are electrically connected.

[0064] Specifically, the dust sensor 1 is configured with six pins, which can be marked as pin ①, pin ②, pin ③, pin ④, pin ⑤ and pin ⑥ in sequence.

[0065] For the infrared light-emitting component of the dust sensor 1, the driving circuit 11 can be constructed by a transistor, the base of the transistor is electrically connected to pin ③, the emitter of the transistor is electrically connected to pin ①, the collector of the transistor is electrically connected to the input end of the infrared light-emitting diode 12, and the output end of the infrared light-emitting diode 12 is electrically connected to pin ②.

[0066] The Vcc terminal of the single-chip microcomputer is electrically connected to pin ① through a series resistor R1, pin ① is electrically connected to pin ② through a capacitor C1, and an output terminal of the single-chip microcomputer is electrically connected to pin ③. In this way, when the single-chip microcomputer sends a control signal to the base of the transistor, the transistor is turned on, and the transistor drives the infrared light emitting diode 12 to emit infrared light.

[0067] At the same time, for the photosensitive component of the dust sensor 1, pin ⑥ is electrically connected to the amplifier circuit 14 to provide working power for the amplifier circuit 14, the phototube 13 is arranged in parallel on the input side of the amplifier circuit 14, the output end of the amplifier circuit 14 is electrically connected to pin ⑤, pin ⑤ is connected to the analog input end of the analog-to-digital converter 3, the digital output end of the analog-to-digital converter 3 is connected to the single-chip microcomputer, and pin ④ of the dust sensor 1 is used as the ground end.

[0068] In this way, after the infrared light emitted by the infrared light emitting diode 12 irradiates the surface of the dust 10, diffuse reflection occurs on the surface of the dust 10, and reflected light is generated. When the reflected light irradiates the photoelectric tube 13, the photoelectric tube 13 is turned on, and the optical signal is converted into an electrical signal. The amplifier circuit 14 amplifies the electrical signal to be suitable for the analog-to-digital converter 3 to receive the electrical signal. The analog-to-digital converter 3 performs analog-to-digital conversion on the amplified electrical signal again, and transmits the converted digital signal to the single-chip microcomputer. The single-chip microcomputer calculates the dust concentration in the gas based on the received digital signal.

[0069] Some examples include Figure 3 and Figure 4 As shown, the amplifier circuit 14 is configured with an operational amplifier Q1, an operational amplifier Q2 and an operational amplifier Q3; the phototube 13 is connected in series between the non-inverting input terminal and the inverting input terminal of the operational amplifier Q1, the output terminal of the operational amplifier Q1 is connected to the non-inverting input terminal of the operational amplifier Q2, and the output terminal of the operational amplifier Q2 is connected to the non-inverting input terminal of the operational amplifier Q3; based on the above connection settings, the operational amplifier Q1, the operational amplifier Q2 and the operational amplifier Q3 are connected in series in sequence.

[0070] The output end of the operational amplifier Q3 is connected to the analog input end of the analog-to-digital converter 3, and the analog-to-digital converter 3 is integrated on the single chip microcomputer.

[0071] In some embodiments, a plurality of dust sensors 1 are provided, and the plurality of dust sensors 1 are arranged in sequence along the extension direction of the heat dissipation duct; the control module 2 is used to determine the dust concentration according to the photosensitive signals fed back by the plurality of dust sensors 1 .

[0072] It is understandable that, by providing a plurality of dust sensors 1 , the present embodiment can perform average processing on the data detected by the plurality of dust sensors 1 , so as to accurately obtain the dust concentration in the gas flowing through the heat dissipation duct.

[0073] At the same time, when one or more of the multiple dust sensors 1 fail, the other parts of the multiple dust sensors 1 can still work normally. This design also ensures that the dust concentration in the gas can be reliably detected.

[0074] In some examples, in order to save installation costs, three dust sensors 1 can be provided. The first dust sensor 1 can be provided at the air inlet end of the heat dissipation duct, the second dust sensor 1 can be provided in the heat dissipation duct, and the third dust sensor 1 can be provided at the air outlet end of the heat dissipation duct.

[0075] In some embodiments, the heat dissipation fan 4 includes a first heat dissipation fan and a second heat dissipation fan.

[0076] The first heat dissipation fan is arranged at the air inlet end of the heat dissipation air duct, and the second heat dissipation fan is arranged at the air outlet end of the heat dissipation air duct.

[0077] The control module 2 is used to control the first cooling fan and the second cooling fan to rotate forward or reverse synchronously.

[0078] It is understandable that when the outdoor terminal equipment normally dissipates heat from its internal functional components, the control module 2 controls the first cooling fan and the second cooling fan to rotate synchronously in the forward direction, and the outside air enters the cooling duct from the air inlet end, and then dissipates heat through air convection with the functional components, and is then discharged from the air outlet end.

[0079] Correspondingly, when the outdoor terminal equipment performs dust removal operations, the control module 2 controls the first cooling fan and the second cooling fan to rotate synchronously in opposite directions, and the outside air enters the cooling duct from the air outlet, and then performs air convection cooling with the functional components, and is then discharged from the air inlet.

[0080] Based on the above arrangement, when the first cooling fan and the second cooling fan rotate forward or reverse synchronously, the functional components can be cooled, thereby ensuring a good heat dissipation intensity and achieving a good dust removal effect.

[0081] In some embodiments, Figure 1 As shown, the automatic dust removal system further includes: an early warning module 5; the control module 2 is electrically connected to the early warning module 5, and the control module 2 is used to control the early warning module 5 to give an early warning indication when the dust concentration is greater than a preset value.

[0082] It is understandable that when the dust concentration is greater than the preset value, the warning module 5 immediately issues a warning indication, so that on-site personnel can intuitively understand whether the dust concentration in the equipment exceeds the standard.

[0083] Optionally, the warning module 5 may be a buzzer 51. When the dust concentration is greater than a preset value, the control module 2 controls the buzzer 51 to emit a sound warning.

[0084] Optionally, the early warning module 5 may be an alarm light 52, which is an LED indicator light. When the dust concentration is greater than a preset value, the control module 2 controls the alarm light 52 to emit light for indication.

[0085] In some embodiments, Figure 1 As shown, the automatic dust removal system further includes: a display module 6 ; the control module 2 and the display module 6 are electrically connected, and the display module 6 is used to display the dust concentration collected by the dust sensor 1 .

[0086] Specifically, the control module 2 includes a single-chip microcomputer and a main control CPU, the single-chip microcomputer and the main control CPU are communicatively connected, and the main control CPU and the display module 6 are communicatively connected.

[0087] After the single chip microcomputer processes the light-sensing signal fed back by the dust sensor 1 to obtain the dust concentration, the dust concentration is transmitted to the main control CPU, and the main control CPU controls the display module 6 to synchronously display the dust concentration.

[0088] The display module 6 may be an LCD display screen or a touch screen controller.

[0089] In some embodiments, Figure 1 As shown, the automatic dust removal system further includes: a wireless communication module 7; the control module 2 and the wireless communication module 7 are electrically connected, and the wireless communication module 7 is configured to communicate with a wireless terminal device.

[0090] The wireless communication module 7 is used to receive an active dust removal instruction from a wireless terminal device, and the control module 2 is used to control the cooling fan 4 to rotate in the opposite direction according to the active dust removal instruction.

[0091] It is understandable that in actual applications, in addition to the above-mentioned adaptive dust removal operation based on the dust concentration in the outdoor terminal equipment, the user can also regularly send active dust removal instructions through wireless terminal devices such as mobile phones and tablets. The main control CPU responds to the active dust removal instructions and sends the relevant control signal to the single-chip microcomputer, which controls the cooling fan 4 to rotate in the opposite direction to actively remove dust from the internal environment of the outdoor terminal equipment.

[0092] Among them, the wireless communication module 7 can be a WiFi module, a zigbee module, a 4G module or a 5G module known in the art, and there is no specific limitation on this.

[0093] In the second aspect, Figure 5 and Figure 6 As shown, an embodiment of the utility model further provides an outdoor terminal device, comprising: a housing 100 and an automatic dust removal system for the outdoor terminal device as described in any one of the above items and arranged in the housing 100 .

[0094] It can be understood that since the outdoor terminal equipment includes an outdoor terminal equipment automatic dust removal system, and the specific structure of the outdoor terminal equipment automatic dust removal system refers to the above embodiment, the outdoor terminal equipment of this embodiment includes all the technical solutions of the above embodiment, and therefore has at least all the beneficial effects achieved by all the technical solutions of the above embodiment, which will not be repeated here one by one.

[0095] like Figure 5 and Figure 6 As shown, the housing 100 includes a base and an upper shell. The upper shell is in a cubic shape. The lower end of the upper shell is connected to the base, and the base is used to be fixed on the attachment structure.

[0096] At the same time, a heat dissipation duct for accommodating functional components is formed in the upper shell body, and the air inlet end 101 and the air outlet end 102 of the heat dissipation duct are both arranged on the back side of the upper shell body, and the air inlet end 101 is located at the lower side of the air outlet end 102. A first heat dissipation fan and a second heat dissipation fan are arranged in the heat dissipation duct, and the first heat dissipation fan and the air inlet end 101 are arranged opposite to each other, and the second heat dissipation fan and the air outlet end 102 are arranged opposite to each other.

[0097] In addition, the alarm light 52 and the display module 6 are located on the front of the upper shell, the alarm light 52 is distributed on the upper side of the display module 6, and the buzzer 51 is arranged on the side of the upper shell.

[0098] Among them, the outdoor terminal equipment can be an outdoor advertising machine, an outdoor sports examination machine, an outdoor vending machine, etc., and there is no specific limitation on this.

[0099] 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. An automatic dust removal system for outdoor terminal equipment, characterized in that: include: Dust sensor, control module and cooling fan; The dust sensor is connected to the control module, and the control module is connected to the cooling fan; the cooling fan is configured to be arranged in a cooling air duct of an outdoor terminal device; The dust sensor is used to detect the dust concentration in the gas flowing through the heat dissipation air duct; the control module is used to control the heat dissipation fan to rotate in the reverse direction when the dust concentration is greater than a preset value.

2. The automatic dust removal system for outdoor terminal equipment according to claim 1, characterized in that: The dust sensor includes an infrared light-emitting component and a photosensitive component; The infrared light emitting component and the photosensitive component are arranged in the heat dissipation duct at intervals, and the infrared light emitting component and the photosensitive component are electrically connected to the control module respectively; The infrared light emitting component is used to emit infrared light under the control of the control module, and the infrared light generates reflected light after irradiating the dust in the air; the photosensitive component is used to receive the reflected light and feed back a photosensitive signal to the control module; Wherein, the control module is used to determine the dust concentration according to the light-sensitive signal.

3. The automatic dust removal system for outdoor terminal equipment according to claim 2 is characterized in that: The infrared light emitting component and the photosensitive component are arranged at intervals along the extension direction of the heat dissipation duct; the line connecting the light emitting end of the infrared light emitting component and the photosensitive end of the photosensitive component is arranged at an angle to the extension direction of the heat dissipation duct.

4. The automatic dust removal system for outdoor terminal equipment according to claim 2, characterized in that: The infrared light emitting component includes a driving circuit and an infrared light emitting diode, the control module is electrically connected to the driving circuit, and the driving circuit is electrically connected to the infrared light emitting diode; The photosensitive component includes a phototube and an amplifier circuit, the phototube is electrically connected to the amplifier circuit, and the amplifier circuit is electrically connected to the control module.

5. The automatic dust removal system for outdoor terminal equipment according to claim 2, characterized in that: There are multiple dust sensors, and the multiple dust sensors are arranged in sequence along the extension direction of the heat dissipation duct; The control module is used to determine the dust concentration according to the light-sensing signals fed back by the multiple dust sensors.

6. The automatic dust removal system for outdoor terminal equipment according to any one of claims 1 to 5, characterized in that: The heat dissipation fan comprises a first heat dissipation fan and a second heat dissipation fan; The first cooling fan is arranged at the air inlet end of the cooling air duct, and the second cooling fan is arranged at the air outlet end of the cooling air duct; The control module is used to control the first cooling fan and the second cooling fan to rotate forward or reverse synchronously.

7. The automatic dust removal system for outdoor terminal equipment according to any one of claims 1 to 5, characterized in that: Also includes: Early warning module; The control module is electrically connected to the early warning module, and the control module is used to control the early warning module to give an early warning indication when the dust concentration is greater than a preset value.

8. The automatic dust removal system for outdoor terminal equipment according to any one of claims 1 to 5, characterized in that: Also includes: Display module; The control module is electrically connected to the display module, and the display module is used to display the dust concentration collected by the dust sensor.

9. The automatic dust removal system for outdoor terminal equipment according to any one of claims 1 to 5, characterized in that: Also includes: Wireless communication module; The control module is electrically connected to the wireless communication module, and the wireless communication module is configured to communicate with a wireless terminal device; The wireless communication module is used to receive an active dust removal instruction from the wireless terminal device, and the control module is used to control the cooling fan to rotate in the opposite direction according to the active dust removal instruction.

10. An outdoor terminal device, characterized in that: include: A casing and an automatic dust removal system for outdoor terminal equipment as described in any one of claims 1 to 9 and arranged in the casing.

Images