CN117956317A - Video access gateway - Google Patents
Video access gateway Download PDFInfo
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- CN117956317A CN117956317A CN202410355409.9A CN202410355409A CN117956317A CN 117956317 A CN117956317 A CN 117956317A CN 202410355409 A CN202410355409 A CN 202410355409A CN 117956317 A CN117956317 A CN 117956317A
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- 238000007664 blowing Methods 0.000 claims abstract description 78
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 40
- 230000007246 mechanism Effects 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 10
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/035—Cooling of active equipments, e.g. air ducts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/04—Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Temperature (AREA)
Abstract
The invention relates to a video access gateway, which comprises a shell, a gateway main board integrated in the shell and an interface module arranged on the shell, wherein the top of the shell is provided with an air outlet, an exhaust fan is arranged at the air outlet, the bottom of the shell is provided with an air inlet, three groups of temperature sensors are arranged on the gateway main board and are respectively used for detecting the temperatures of a first part, a second part and a third part on the gateway main board; the video access gateway is characterized in that the video access gateway further comprises a blowing device arranged at the air inlet, when the temperature of the video access gateway is too high, the blowing device moves into the area where each part on the gateway main board is located, and the blowing time of the blowing device to each part is adjusted according to the temperature rise characteristics of each part, so that the differentiated air cooling heat dissipation of the area where each part on the gateway main board is located can be realized, and the video access gateway can achieve a better heat dissipation effect.
Description
Technical Field
The invention relates to the technical field of internet gateways, in particular to a video access gateway.
Background
The video access gateway is a network-based digital device, and is mainly used for realizing remote transmission of monitoring images and remote control of camera equipment. The video access gateway receives an analog video signal transmitted by a common video camera through a video input port, and outputs a digital video signal stream conforming to a network transmission protocol through digital processing and data compression; the video access gateway is widely applied to various fields such as video conferences, traffic monitoring, remote teaching, telemedicine, residential communities, bank security and the like.
The video access gateway can produce a large amount of heat at the during operation, need in time dispel the heat and cool it to avoid the high temperature to cause the video access gateway to damage.
The existing video access gateway is generally provided with an exhaust fan and an exhaust fan, and heat inside the video access gateway is mainly generated by a gateway main board, and when the temperature of the gateway main board is detected to be too high, the exhaust fan and the exhaust fan are started, so that the effects of heat dissipation and temperature reduction are achieved.
The application number is 202023153956.5's chinese patent discloses an "thing networking touch screen gateway data intelligence collection system", and the device is inside to be provided with first riser, and the fan is installed to one side of first riser, through removing first riser, adjusts the fan and the internal distance that needs the radiating part of cabinet, makes the radiating effect reach the best. The device aims at the whole of the part needing heat dissipation, and the heat dissipation effect can be adjusted only by adjusting the blowing distance between the fan and the whole part needing heat dissipation.
In practice, the gateway main board contains various electronic components, so that the heat generated by different electronic components during operation is different, and the temperature rise rate and the temperature of different parts of the gateway main board have obvious differences. The above patent simply blows air to the whole body of the part requiring heat dissipation, and can not conduct targeted and differentiated heat dissipation on each part according to the temperature rise characteristics of each part of the gateway main board, the temperature difference suppression effect on each part is poor, and obviously, the heat dissipation effect of the integral heat dissipation scheme has a room for further improvement.
Disclosure of Invention
Based on the above description, the invention provides a video access gateway which has better heat dissipation effect.
The technical scheme for solving the technical problems is as follows:
The video access gateway comprises a shell, a gateway main board integrated in the shell and an interface module arranged on the shell, wherein the top of the shell is provided with an air outlet, an exhaust fan is arranged at the air outlet, the bottom of the shell is provided with an air inlet, three groups of temperature sensors are arranged on the gateway main board, the three groups of temperature sensors are respectively a first temperature sensor, a second temperature sensor and a third temperature sensor from left to right, and are uniformly distributed along the transverse direction, and the three groups of temperature sensors are respectively used for detecting the temperatures of a first part, a second part and a third part on the gateway main board; the video access gateway also comprises a controller and a blowing device arranged at the air inlet, and the three groups of temperature sensors are connected with the controller; the air blowing device comprises a sliding seat which is connected with the shell in a sliding manner and slides along the transverse direction, and a first driving mechanism which is used for driving the sliding seat to slide back and forth, wherein the first driving mechanism is controlled by the controller, an air duct and a first air outlet pipe are arranged on the sliding seat, the air duct faces towards the air inlet, an air suction fan is arranged at the inlet of the air duct, the inlet of the first air outlet pipe is connected with the outlet of the air duct, the outlet of the first air outlet pipe faces towards the gateway main board, and the air suction fan is connected with the controller and controlled by the controller; the air blowing device further comprises a second air outlet pipe and a flexible connecting pipe, the second air outlet pipe and the flexible connecting pipe are arranged along the length direction of the first air outlet pipe, the flexible connecting pipe is flexible, an inlet of the flexible connecting pipe is connected with an outlet of the air duct, an inlet of the second air outlet pipe is connected with an outlet of the flexible connecting pipe, and an outlet of the second air outlet pipe faces the gateway main board; the air blowing device also comprises a second driving mechanism for driving the second air outlet pipe to swing so as to change the outlet direction of the second air outlet pipe, and the second driving mechanism is controlled by the controller;
In the operation process of the video access gateway, the three groups of temperature sensors feed back a first temperature detection value, a second temperature detection value and a third temperature detection value to a controller respectively, the controller compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a preset first temperature threshold T1, when any group of temperature detection values are larger than the first temperature threshold T1, the controller calculates average temperature rise rates delta T1, delta T2 and delta T3 of a first part, a second part and a third part after three subsequent continuous temperature sampling, and then calculates the stay time T1, T2 and T3 of the blowing device at each part according to a formula T=delta ti×T0, i=1, 2 or 3, wherein T0 is preset reference time; the controller continuously samples output signals of the three groups of temperature sensors, compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a preset second temperature threshold value T2, wherein T2 is more than T1, when any group of temperature detection values are larger than the second temperature threshold value T2, the controller controls the first driving mechanism to enable the blowing device to slide to a first position, the controller controls the exhaust fan and the exhaust fan to start timing, when the timing reaches T1, the controller controls the first driving mechanism to enable the blowing device to slide to a second position and restart timing, when the timing reaches T2, the controller controls the first driving mechanism to enable the blowing device to slide to the third position and restart timing, and when the timing reaches T3, the controller controls the first driving mechanism to enable the blowing device to reversely slide to the second position, so that the left and right circulation is realized; when the temperatures of the first part, the second part and the third part are reduced to be lower than a first temperature threshold t1, the controller controls the first driving mechanism to enable the blowing device to return to the initial position and controls the exhaust fan and the exhaust fan to stop;
In the running process of the video access gateway, when any one of the three groups of temperature detection values of the temperature sensors is larger than a first temperature threshold t1, the controller calculates average temperature rise rates delta t1, delta t2 and delta t3 of a first part, a second part and a third part on a gateway main board, and then the controller sorts cooling priorities of the three parts according to the average temperature rise rates, wherein the higher the average temperature rise rate is, the higher the priority is; after the blowing device is started, when the blowing device radiates heat and cools the current position, the controller judges the priority of other positions, and determines the sequence of swinging the second air outlet pipe to other positions and the auxiliary blowing time tf for other positions according to the priority of other positions, wherein n is the number of the current position of the blowing device, tn is the time of stopping the blowing device at the current position, and the value of n is 1, 2 or 3; x and y are numbers of other parts, i=x or y, x is 1, 2 or 3, and y is 1, 2 or 3; the controller firstly controls the second air outlet pipe to swing to a position with higher priority in other positions and performs air blowing for a corresponding time length on the position, and then controls the second motor to drive the second air outlet pipe to swing to a position with lower priority in other positions and perform air blowing for a corresponding time length on the position.
As a preferable scheme: the first driving mechanism comprises a pair of vertical supporting plates which are arranged at intervals, the supporting plates are fixedly connected with the shell, a pair of transverse guide rods are arranged between the two supporting plates, two ends of each guide rod are fixedly connected with the two groups of supporting plates respectively, a screw rod is arranged between the two groups of guide rods, the screw rod is parallel to the guide rods, a first motor is fixedly arranged on one group of supporting plates, one end of the screw rod is coaxially connected with an output shaft of the first motor, the other end of the screw rod is rotatably connected with the other group of supporting plates, the first motor is connected with the controller and controlled by the controller, a thread bush is arranged on the bottom surface of the sliding seat, and the screw rod penetrates through the thread bush and is in threaded fit with the thread bush.
As a preferable scheme: the second driving mechanism comprises a driven gear and a second motor, the driven gear is positioned between the second air outlet pipe and the first air outlet pipe, a buckle is arranged on one surface of the driven gear, facing the second air outlet pipe, of the driven gear, and the buckle clamps the side part of the second air outlet pipe; a rotating shaft is fixedly connected to the center of one surface of the driven gear, which faces the first air outlet pipe, and the rotating shaft is rotationally connected with the first air outlet pipe; the shell of the second motor is fixedly connected with the sliding seat, a driving gear is coaxially connected to the output shaft of the second motor, a transmission gear is further arranged between the driving gear and the driven gear, the transmission gear is rotationally connected with the sliding seat, the driving gear is meshed with the transmission gear, the transmission gear is meshed with the driven gear, and the second motor is connected with the controller and controlled by the controller.
As a preferable scheme: the controller comprises a main control module, an alarm module, a communication module and a power module, wherein the alarm module, the communication module and the power module are connected with the main control module.
As a preferable scheme: the communication module is a WIFI module or an Internet of things communication module.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
When the video access gateway works, the blowing device can be moved into the area where each part on the gateway main board is located, the blowing time length of the blowing device to each part is adjusted according to the temperature rise characteristics of each part, the pertinence and the differential air cooling heat dissipation of the area where each part on the gateway main board is located can be realized, and the blowing heat dissipation of other parts is realized in the mode of swinging blowing when the current part is blown for heat dissipation, so that the heat dissipation efficiency can be improved, and the temperature difference suppression effect of each part is better. Compared with the traditional heat dissipation mode, the integrated type air blowing device has the advantages that the integrated type air blowing device is used for locally and dynamically dissipating heat, and the video access gateway can achieve a better heat dissipation effect.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a gateway in the present embodiment;
fig. 2 is a schematic diagram showing the front structure of the blower device in the present embodiment;
fig. 3 is a schematic side view of a blower in the present embodiment;
Fig. 4 is a control principle frame in the present embodiment.
In the drawings, the list of components represented by the various numbers is as follows:
1. A housing; 2. a gateway main board; 3. a temperature sensor; 4. a support plate; 5. a guide rod; 6. a screw rod; 7. a sliding seat; 8. an air duct; 9. an exhaust fan; 10. a first air outlet pipe; 11. a second air outlet pipe; 12. a flexible connecting tube; 13. a driven gear; 14. a buckle; 15. a rotating shaft; 16. a second motor; 17. a drive gear; 18. a transmission gear; 19. a first motor; 20. foot pads; 21. an air inlet; 22. an air outlet; 23. an exhaust fan; 24. and an interface module.
Detailed Description
Referring to fig. 1 and 2, a video access gateway includes a housing 1, a gateway main board 2 integrated within the housing 1, and an interface module 24 provided on the housing 1.
An air outlet 22 is provided at the top of the housing 1 and an exhaust fan 23 is installed at the air outlet 22. An air inlet 21 is arranged at the bottom of the shell 1, and a foot pad 20 is also arranged at the bottom of the shell 1 in order to facilitate the inflow of external air into the air inlet 21.
The gateway also comprises a blowing device arranged at the air inlet 21, and the blowing device is positioned between the gateway main board 2 and the air inlet 21.
The blowing device comprises a pair of vertical supporting plates 4 which are arranged at intervals, and the supporting plates 4 are fixedly connected with the shell 1; a pair of transverse guide rods 5 are arranged between the two support plates 4, and two ends of each guide rod 5 are respectively connected and fixed with the two groups of support plates 4; a screw rod 6 is arranged between the two groups of guide rods 5, and the screw rod 6 is parallel to the guide rods 5; a first motor 19 is fixedly arranged on one group of support plates 4, one end of a screw rod 6 is coaxially connected with an output shaft of the first motor 19, and the other end of the screw rod 6 is rotatably connected with the other group of support plates 4.
The blowing device further comprises a sliding seat 7, wherein the sliding seat 7 is in sliding connection with the guide rod 5, so that the sliding seat 7 can slide back and forth along the guide rod 5. A screw sleeve (not shown in the figure) is installed on the bottom surface of the sliding seat 7, the screw rod 6 penetrates through the screw sleeve and is in threaded fit with the screw sleeve, and the sliding seat 7 can be driven to slide along the guide rod 5 when the first motor 19 drives the screw rod 6 to rotate.
An air duct 8 and a first air outlet pipe 10 are arranged on the sliding seat 7, the air duct 8 is close to the air inlet 21 and faces the air inlet 21, and an exhaust fan 9 is arranged at the inlet of the air duct 8; the first air outlet pipe 10 is close to the gateway main board 2, an inlet of the first air outlet pipe 10 is connected with an outlet of the air duct 8, and an outlet of the first air outlet pipe 10 faces the gateway main board 2.
As shown in fig. 1, at least three groups of temperature sensors 3 are installed on the gateway main board 2, and the three groups of temperature sensors are respectively a first temperature sensor, a second temperature sensor and a third temperature sensor from left to right and are uniformly distributed along the sliding direction of the sliding seat 7. The three groups of temperature sensors are respectively used for detecting the temperatures of the first part, the second part and the third part on the gateway main board 2.
Referring to fig. 4, the blowing device further includes a controller including a main control module, and further including an alarm module, a communication module, and a power module connected with the main control module. The control signal output end of the controller is connected with the driving end of the first motor 19 and is used for outputting a control signal to the first motor 19.
The output ends of the first temperature sensor, the second temperature sensor and the third temperature sensor are respectively connected with the sampling signal input end of the main control module, and the control signal output end of the main control module is connected with the driving ends of the exhaust fan 9, the exhaust fan 23 and the first motor 19. The main control module samples the temperature detection signal once at regular intervals (for example, once every 5 seconds).
In the initial state (i.e. when the blower is not required to be started), the suction fan 9 and the exhaust fan 23 are both in a stopped state, and the sliding seat 7 is located at the right-left limiting position.
The video access gateway operates with the gateway main board 2 generating heat and increasing in temperature.
The first temperature sensor detects the temperature of the first part of the gateway main board 2 in real time and feeds back a temperature detection result, namely a first temperature detection value, to the main control module; meanwhile, the second temperature sensor detects the temperature of the second part of the gateway main board 2 in real time and feeds back a temperature detection result, namely a second temperature detection value, to the main control module; the third temperature sensor detects the temperature of the third part of the gateway main board 2 in real time and feeds back a temperature detection result, namely a third temperature detection value, to the main control module.
The main control module is preset with a first temperature threshold t1 and a second temperature threshold t2, wherein the second temperature threshold is larger than the first temperature threshold. The second temperature threshold is a temperature value at which the blowing device is started.
The main control module compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a first temperature threshold t 1. When any one group of temperature detection values is larger than the first temperature threshold t1, the main control module respectively calculates average temperature rise rates delta t1, delta t2 and delta t3 of the first part, the second part and the third part on the gateway main board 2 after three subsequent continuous temperature sampling.
Taking the first part as an example, for example, the temperature values obtained by continuously sampling the first temperature sensor three times by the main control module are tx, ty and tz respectively, the average temperature rise rate delta t1 = [ (tx-t 1)/5+ (ty-tx)/5+ (tz-ty)/5 ]/3 of the first part can be calculated through the data obtained by sampling.
The average temperature rise rate deltat 2 of the second part and the temperature rise rate deltat 3 of the third part can be calculated by the same method.
And then determining the time length of the blowing device staying at each position according to the temperature rise rate of each position.
For example, the time period t1=Δt1×t0 for which the blower remains at the first position, where T0 is a preset "reference time period". The same can be said to calculate the time period t2=Δt2×t0, t3=Δt3×t0 for the blower to stay in the second and third positions.
And then the main control module continues to sample output signals of the three groups of temperature sensors and compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a second temperature threshold t 2. When any one set of temperature detection values is greater than the second temperature threshold t2, the main control module controls the first motor 19 to start so as to drive the sliding seat 7 to slide rightwards, and when the sliding seat 7 moves to the position right below the first temperature sensor, the main control module controls the first motor 19 to stop making the sliding seat 7 stay at the current position, and at the moment, the outlet of the first air outlet pipe 10 just aims at the first position. Then the main control module controls the starting of the exhaust fan 9 and the exhaust fan 23 and starts timing; at this time, cooler air outside the video access gateway is sucked in from the air inlet 21 by the air suction fan 9, and flows into the first air outlet pipe 10 after passing through the air duct 8, and then flows out from the first air outlet pipe 10 to be blown to the first part of the gateway main board 2, and the air takes away the heat of the first part and is discharged out of the video access gateway by the air discharge fan 23, so that the heat dissipation and the temperature reduction are realized for the area where the first part is located.
When the timing reaches T1, the main control module controls the first motor 19 to start so as to drive the sliding seat 7 to continuously slide rightwards, and when the sliding seat 7 moves to the position right below the second temperature sensor, the main control module controls the first motor 19 to stop making the sliding seat 7 stay at the current position, and at the moment, the outlet of the first air outlet pipe 10 just aims at the second position. The air blowing device starts to radiate heat and cool the area where the second part is located, and meanwhile, the main control module restarts timing. When the timing reaches T2, the main control module controls the first motor 19 to start so as to drive the sliding seat 7 to continue sliding rightwards, and when the sliding seat 7 moves to the position right below the third temperature sensor, the main control module controls the first motor 19 to stop making the sliding seat 7 stay at the current position, and at the moment, the outlet of the first air outlet pipe 10 just aims at the third position. The air blowing device starts to radiate heat and cool the area where the third part is located, and meanwhile, the main control module restarts timing. When the timing reaches T3, the main control module controls the first motor 19 to drive the sliding seat 7 to move leftwards to the position right below the second temperature sensor, and when the timing reaches T2, the main control module controls the first motor 19 to drive the sliding seat 7 to slide leftwards to the position right below the first temperature sensor … … to circularly reciprocate leftwards and rightwards in the same way.
When the temperatures of the first part, the second part and the third part are reduced to be lower than the first temperature threshold t1, the main control module controls the first motor 19 to drive the sliding seat 7 to return to the initial position, and controls the exhaust fan 9 and the exhaust fan 23 to stop.
Through the scheme, the air blowing device can be moved into the area where each part on the gateway main board 2 is located, the air blowing time length of the air blowing device to each part is adjusted according to the temperature rise characteristics of each part, the differential air cooling heat dissipation of the area where each part on the gateway main board 2 is located can be realized, and compared with the traditional gateway heat dissipation, the video access gateway can achieve a better heat dissipation effect by blowing air from a certain fixed position to the gateway main board 2 without effectively blowing each part.
Referring to fig. 2 and 3, the blower device in this embodiment further includes a second air outlet pipe 11 and a flexible connection pipe 12, where the second air outlet pipe 11 and the flexible connection pipe 12 are disposed along the length direction of the first air outlet pipe 10, the flexible connection pipe 12 has elasticity (the flexible connection pipe 12 in this embodiment may be a plastic bellows), the flexible connection pipe 12 is close to the air duct 8, and the second air outlet pipe 11 is close to the gateway motherboard 2. The inlet of the flexible connecting pipe 12 is connected with the outlet of the air duct 8, the inlet of the second air outlet pipe 11 is connected with the outlet of the flexible connecting pipe 12, and the outlet of the second air outlet pipe 11 faces the gateway main board 2.
A driven gear 13 is arranged between the second air outlet pipe 11 and the first air outlet pipe 10, a buckle 14 is arranged on one surface of the driven gear 13 facing the second air outlet pipe 11, and the buckle 14 clamps the side part of the second air outlet pipe 11; a rotary shaft 15 is fixedly connected to the center of one surface of the driven gear 13 facing the first air outlet pipe 10, and the rotary shaft 15 is rotatably connected with the first air outlet pipe 10.
As shown in fig. 2, when the driven gear 13 rotates clockwise around the rotating shaft 15, the second air outlet pipe 11 can be driven to swing rightwards; and when the driven gear 13 rotates anticlockwise around the rotating shaft 15, the second air outlet pipe 11 can be driven to swing leftwards.
The blower device in this embodiment further includes a second motor 16, a housing of the second motor 16 is fixedly connected with the sliding seat 7, a driving gear 17 is coaxially connected to an output shaft of the second motor 16, a transmission gear 18 is further disposed between the driving gear 17 and the driven gear 13, the transmission gear 18 is rotationally connected with the sliding seat 7, the driving gear 17 is meshed with the transmission gear 18, and the transmission gear 18 is meshed with the driven gear 13.
Referring to fig. 4, a control signal output end of the main control module is connected with a driving end of the second motor 16.
In the initial state, the second air outlet pipe 11 is parallel to the first air outlet pipe 10, i.e. the second air outlet pipe 11 does not swing, and is in the "zero degree" position.
In the operation process of the video access gateway, when any one of the three groups of temperature detection values of the temperature sensors is larger than a first temperature threshold t1, the main control module calculates average temperature rise rates delta t1, delta t2 and delta t3 of a first part, a second part and a third part on the gateway main board 2 after three subsequent continuous temperature sampling.
And then the main control module sorts the cooling priorities of the three parts according to the average temperature rise rate, and the higher the average temperature rise rate is, the higher the priority is.
Subsequently, when any one of the three groups of temperature sensors is larger than a second temperature threshold t2, the main control module controls the sliding seat 7 to slide to the first position and controls the exhaust fan 9 and the exhaust fan 23 to start, and heat dissipation is started to the region where the first position is located; meanwhile, the main control module judges the priority of other parts except the current part, namely judges the priority of the second part and the third part, and determines the sequence of swinging the second air outlet pipe 11 to other parts and the auxiliary blowing time tf for the other parts according to the priority of the other parts.
Specifically, the main control module firstly controls the second motor 16 to drive the second air outlet pipe 11 to swing to a position with higher priority in other positions and perform air blowing for a corresponding time period on the position, and then controls the second motor 16 to drive the second air outlet pipe 11 to swing to a position with lower priority in other positions and perform air blowing for a corresponding time period on the position.
For example, if the "priority" of the first portion where the slide seat 7 is currently located is high, the "priority" of the second portion is medium, and the "priority" of the third portion is low. The second air outlet pipe 11 swings to the second position and performs the air blowing for a corresponding period of time, and then swings to the third position and performs the air blowing for a corresponding period of time.
In this embodiment, for the auxiliary blowing duration tfi=tn×Δti/(Δtx+Δty) of other parts, where n is the number of the part where the blower is currently located, x and y are the numbers of other parts, and i=x or y.
For example, when the blower device radiates heat to cool the first portion, the auxiliary blowing period tf2=t1×Δt2/(Δt2+Δt3) for the second portion; the auxiliary blowing time period for the third portion is tb3=t1×Δt3/(Δt2+Δt3).
When the sliding seat 7 slides to the second position, the main control module compares the priority levels of the first position and the third position, and calculates auxiliary blowing duration tf1 of the first position and auxiliary blowing duration tf3 of the third position according to T2, delta T1 and delta T3; the main control module firstly controls the second motor 16 to drive the second air outlet pipe 11 to swing to a first position and perform air blowing with corresponding duration, and then controls the second motor 16 to drive the second air outlet pipe 11 to swing to a third position and perform air blowing with corresponding duration; and so on, will not be described in detail.
It should be noted that: in this embodiment, the swing angle of the second air outlet pipe 11 needs to be calibrated in advance. Specific: firstly, a plane rectangular coordinate system is established, and the coordinates of the central point on the sliding seat 7 are obtained when the sliding seat 7 slides to the first part, the second part and the third part.
When the sliding seat 7 is at the first position, the angle of rotation required by the second air outlet pipe 11 to swing to the second position and the angle of rotation required by the second air outlet pipe to swing to the third position can be calculated by utilizing a trigonometric function according to the center point coordinates of the first position, the center point coordinates of the second position, the center point coordinates of the third position and the center point coordinates of the driven wheel.
Similarly, the angle of rotation required by the second air outlet pipe 11 to swing to the first position and the angle of rotation required by the second air outlet pipe to swing to the third position can be calculated when the sliding seat 7 is at the second position.
Similarly, the angle of rotation required by the second air outlet pipe 11 to swing to the first position and the angle of rotation required by the second position when the sliding seat 7 is at the third position can be calculated.
The calibrated angle data are stored in the main control module, the corresponding angle data are called when the second air outlet pipe 11 is required to be controlled to swing, and the second motor 16 is controlled to rotate the angle, so that the second air outlet pipe 11 can swing to a required position.
Through the scheme, the cooperation of the first air outlet pipe 10 and the second air outlet pipe 11 can be realized, when the first air outlet pipe 10 blows to the current position of the sliding seat 7, the second air outlet pipe 11 simultaneously blows to other positions in a targeted mode, namely, static blowing and dynamic blowing are mutually matched, the phenomenon that other positions cannot be blown in time and the temperature rises too high is avoided, the whole gateway main board 2 is cooled by heat dissipation fast, and better heat dissipation effect is achieved.
The blowing device in this embodiment further includes an alarm module, and a control signal output end of the main control module is connected with a control end of the alarm module.
In the working process of the video access gateway, when the duration time that the temperature in the video access gateway is higher than the second temperature threshold t2 reaches a certain duration, the blowing device is not capable of effectively radiating and cooling the video access gateway, and the video access gateway or the blowing device possibly fails, and the main control module controls the alarm module to send an alarm signal.
The blowing device in this embodiment further includes a communication module, and the communication module is connected to the data transceiver port of the main control module. When the main control module controls the alarm module to send out an alarm signal, the main control module generates abnormal alarm information and sends the abnormal alarm information to a manager through the communication module, so that the remote reminding function is realized.
The communication module in this embodiment is a WIFI module or an internet of things communication module.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The utility model provides a video access gateway, includes the shell, integrates the gateway mainboard in the shell and sets up the interface module on the shell, the top of shell is provided with the air outlet and installs the exhaust fan in air outlet department, the bottom of shell is provided with the air intake, characterized by: the gateway main board is provided with three groups of temperature sensors, namely a first temperature sensor, a second temperature sensor and a third temperature sensor from left to right, wherein the three groups of temperature sensors are uniformly distributed along the transverse direction and are respectively used for detecting the temperatures of a first part, a second part and a third part on the gateway main board; the video access gateway also comprises a controller and a blowing device arranged at the air inlet, and the three groups of temperature sensors are connected with the controller; the air blowing device comprises a sliding seat which is connected with the shell in a sliding manner and slides along the transverse direction, and a first driving mechanism which is used for driving the sliding seat to slide back and forth, wherein the first driving mechanism is controlled by the controller, an air duct and a first air outlet pipe are arranged on the sliding seat, the air duct faces towards the air inlet, an air suction fan is arranged at the inlet of the air duct, the inlet of the first air outlet pipe is connected with the outlet of the air duct, the outlet of the first air outlet pipe faces towards the gateway main board, and the air suction fan is connected with the controller and controlled by the controller; the air blowing device further comprises a second air outlet pipe and a flexible connecting pipe, the second air outlet pipe and the flexible connecting pipe are arranged along the length direction of the first air outlet pipe, the flexible connecting pipe is flexible, an inlet of the flexible connecting pipe is connected with an outlet of the air duct, an inlet of the second air outlet pipe is connected with an outlet of the flexible connecting pipe, and an outlet of the second air outlet pipe faces the gateway main board; the air blowing device also comprises a second driving mechanism for driving the second air outlet pipe to swing so as to change the outlet direction of the second air outlet pipe, and the second driving mechanism is controlled by the controller;
In the operation process of the video access gateway, the three groups of temperature sensors feed back a first temperature detection value, a second temperature detection value and a third temperature detection value to a controller respectively, the controller compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a preset first temperature threshold T1, when any group of temperature detection values are larger than the first temperature threshold T1, the controller calculates average temperature rise rates delta T1, delta T2 and delta T3 of a first part, a second part and a third part after three subsequent continuous temperature sampling, and then calculates the stay time T1, T2 and T3 of the blowing device at each part according to a formula T=delta ti×T0, i=1, 2 or 3, wherein T0 is preset reference time; the controller continuously samples output signals of the three groups of temperature sensors, compares the first temperature detection value, the second temperature detection value and the third temperature detection value with a preset second temperature threshold value T2, wherein T2 is more than T1, when any group of temperature detection values are larger than the second temperature threshold value T2, the controller controls the first driving mechanism to enable the blowing device to slide to a first position, the controller controls the exhaust fan and the exhaust fan to start timing, when the timing reaches T1, the controller controls the first driving mechanism to enable the blowing device to slide to a second position and restart timing, when the timing reaches T2, the controller controls the first driving mechanism to enable the blowing device to slide to the third position and restart timing, and when the timing reaches T3, the controller controls the first driving mechanism to enable the blowing device to reversely slide to the second position, so that the left and right circulation is realized; when the temperatures of the first part, the second part and the third part are reduced to be lower than a first temperature threshold t1, the controller controls the first driving mechanism to enable the blowing device to return to the initial position and controls the exhaust fan and the exhaust fan to stop;
In the running process of the video access gateway, when any one of the three groups of temperature detection values of the temperature sensors is larger than a first temperature threshold t1, the controller calculates average temperature rise rates delta t1, delta t2 and delta t3 of a first part, a second part and a third part on a gateway main board, and then the controller sorts cooling priorities of the three parts according to the average temperature rise rates, wherein the higher the average temperature rise rate is, the higher the priority is; after the blowing device is started, when the blowing device radiates heat and cools the current position, the controller judges the priority of other positions, and determines the sequence of swinging the second air outlet pipe to other positions and the auxiliary blowing time tf for other positions according to the priority of other positions, wherein n is the number of the current position of the blowing device, tn is the time of stopping the blowing device at the current position, and the value of n is 1, 2 or 3; x and y are numbers of other parts, i=x or y, x is 1, 2 or 3, and y is 1, 2 or 3; the controller firstly controls the second air outlet pipe to swing to a position with higher priority in other positions and performs air blowing for a corresponding time length on the position, and then controls the second motor to drive the second air outlet pipe to swing to a position with lower priority in other positions and perform air blowing for a corresponding time length on the position.
2. The video access gateway of claim 1, wherein: the first driving mechanism comprises a pair of vertical supporting plates which are arranged at intervals, the supporting plates are fixedly connected with the shell, a pair of transverse guide rods are arranged between the two supporting plates, two ends of each guide rod are fixedly connected with the two groups of supporting plates respectively, a screw rod is arranged between the two groups of guide rods, the screw rod is parallel to the guide rods, a first motor is fixedly arranged on one group of supporting plates, one end of the screw rod is coaxially connected with an output shaft of the first motor, the other end of the screw rod is rotatably connected with the other group of supporting plates, the first motor is connected with the controller and controlled by the controller, a thread bush is arranged on the bottom surface of the sliding seat, and the screw rod penetrates through the thread bush and is in threaded fit with the thread bush.
3. The video access gateway of claim 1, wherein: the second driving mechanism comprises a driven gear and a second motor, the driven gear is positioned between the second air outlet pipe and the first air outlet pipe, a buckle is arranged on one surface of the driven gear, facing the second air outlet pipe, of the driven gear, and the buckle clamps the side part of the second air outlet pipe; a rotating shaft is fixedly connected to the center of one surface of the driven gear, which faces the first air outlet pipe, and the rotating shaft is rotationally connected with the first air outlet pipe; the shell of the second motor is fixedly connected with the sliding seat, a driving gear is coaxially connected to the output shaft of the second motor, a transmission gear is further arranged between the driving gear and the driven gear, the transmission gear is rotationally connected with the sliding seat, the driving gear is meshed with the transmission gear, the transmission gear is meshed with the driven gear, and the second motor is connected with the controller and controlled by the controller.
4. The video access gateway of claim 1, wherein: the controller comprises a main control module, an alarm module, a communication module and a power module, wherein the alarm module, the communication module and the power module are connected with the main control module.
5. The video access gateway of claim 4, wherein: the communication module is a WIFI module or an Internet of things communication module.
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