CN101692299A - Monitoring system and protective device - Google Patents
Monitoring system and protective device Download PDFInfo
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- CN101692299A CN101692299A CN200910235214A CN200910235214A CN101692299A CN 101692299 A CN101692299 A CN 101692299A CN 200910235214 A CN200910235214 A CN 200910235214A CN 200910235214 A CN200910235214 A CN 200910235214A CN 101692299 A CN101692299 A CN 101692299A
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Abstract
The invention provides a monitoring system and a protective device. The monitoring system comprises a monitoring module, a protective cover and an air supply module, wherein the monitoring module is used for acquiring monitoring information of a protection area; the protective cover is arranged at the periphery of the monitoring module; and the air supply module is connected with the protective cover, and is used for providing compressed air for the protective cover, so that air pressure in the protective cover is greater than that in the protection area to avoid the monitoring module directly contacting air in the protection area. The invention can effectively protect monitoring equipment applied to severe environments.
Description
Technical field
The present invention relates to the security against fire technical field, relate in particular to a kind of supervisory system and protective device.
Background technology
Exist many rugged surroundings place in the industrial trade, be difficult to carry out monitoring, for example, the tobacco storehouse of tobacco business, the pesticide that uses in the tobacco storehouse can produce the gas hydrogen phosphide of highly corrosive, has very strong perviousness, and all kinds of electronic monitoring equipments are had the deep-etching effect; In addition, the coal dust processing district of some factories generally can produce a large amount of dust, and conventional watch-dog is easy to be subjected to the influence of dust.And these rugged surroundings places exist the danger that higher blast, fire or other disaster take place simultaneously, are the zones that needs key monitoring, therefore, are necessary to be provided with various watch-dogs.
For so high etchant gas place, similar tobacco storehouse; disposal route in the past mostly is the outer setting one leakproofness shell at monitoring equipment; electronic circuit with the protection monitoring equipment is not encroached on; yet; because the high seepage force of corrosive gas; even adopt the leakproofness shell, also can monitoring equipment be corroded.And for dust atmosphere, dust is easy to be attached to the outside surface of watch-dogs such as detector or sensor, shelter from the sensitivity of detector window or reduction sensor, for example when using flame detector monitoring fortune coal belt, the coal dust that is produced in the environment often makes flame detector sensitivity descend greatly, and people are obliged to retreat and adopt the temperature sensitive type detector, yet, because fortune coal belt moves, the temperature sensitive type detector can't reach the purpose of quick detecting/warning.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of supervisory system and protective device, can effectively protect the detection equipment that is applied in the rugged surroundings.
For addressing the above problem, the embodiment of the invention provides a kind of supervisory system, comprising:
Detecting module is used to obtain the detecting information of zone of protection;
Guard shield is arranged at described detecting module periphery;
The air feed module is connected with described guard shield, is used for providing pressurized air to described guard shield, makes air pressure in the described guard shield greater than the air pressure in the described zone of protection, directly contacts with air in the described zone of protection to avoid described detecting module.
Described supervisory system also comprises:
Message processing module is connected with described detecting module, is used for according to described detecting information, judges whether described zone of protection exists the object event of needs detecting.
Described air feed module comprises:
The air pressurized module is connected with described guard shield, is used to produce described pressurized air.
Described air feed module also comprises:
The air filtration module is connected with described air pressurized module, is used for the compressed air of needs is filtered, and obtains clean air to offer described air pressurized module.
Described supervisory system also comprises:
Pressure transducer is arranged in the described guard shield, is used to monitor the air pressure in the described guard shield, obtains a monitoring result.
Described supervisory system also comprises:
The pressure alarm module is connected with described pressure transducer, when being used for air pressure in described monitoring result shows described guard shield less than predetermined threshold value, reports to the police.
Described supervisory system also comprises:
Control module is connected with described air pressurized module with described pressure transducer, is used for according to described monitoring result, controls described air pressurized module and starts or close.
Described supervisory system also comprises:
Pressure adjusting module is connected with described guard shield, is used to regulate the air pressure in the described guard shield.
Described guard shield is hermetic guard shield, and has an optical transmission window, and described optical transmission window is used to provide the printing opacity condition, makes described detecting module can pass through described optical transmission window, obtains the detecting information of described zone of protection.
Described guard shield has a ventilative window, makes that the pressurized air in the described guard shield is spouting by described ventilative window.
Described detecting module is a video camera;
Described message processing module comprises:
Computing module is used for calculating the ground coordinate that described object event takes place when having the object event of described needs detecting, and the computing formula of the ground coordinate that described object event takes place is:
y＝H(tgθ+y
1/F)/(1-y
1tgθ/F)
x＝x
1/F×y
1
Wherein, (x y) is the ground coordinate that described object event takes place, and described video camera is arranged at coordinate position top, ground (0,0), and H is the setting height(from bottom) of described video camera, and θ is that the setting angle of described video camera is (x
1, y
1) be that (F is described focus of camera for x, y) the subpoint coordinate on camera sensor.
The embodiment of the invention also provides a kind of protective device, is applied in the supervisory system, and described supervisory system comprises detecting module, and described detecting module is used to obtain the detecting information of zone of protection, and described protective device comprises:
Guard shield is arranged at described detecting module periphery;
The air feed module is connected with described guard shield, is used for providing pressurized air to described guard shield, makes air pressure in the described guard shield greater than the air pressure in the described zone of protection, directly contacts with air in the described zone of protection to avoid described detecting module.
Described air feed module comprises:
The air pressurized module is connected with described guard shield, is used to produce described pressurized air.
Described air feed module also comprises:
The air filtration module is connected with described air pressurized module, is used for the compressed air of needs is filtered, and obtains clean air to offer described air pressurized module.
Described protective device also comprises:
Pressure transducer is arranged in the described guard shield, is used to monitor the air pressure in the described guard shield, obtains a monitoring result.
Described protective device also comprises:
The pressure alarm module is connected with described pressure transducer, when being used for air pressure in described monitoring result shows described guard shield less than predetermined threshold value, reports to the police.
Described protective device also comprises:
Control module is connected with described air pressurized module with described pressure transducer, is used for according to described monitoring result, controls described air pressurized module and starts or close.
Described protective device also comprises:
Pressure adjusting module is connected with described guard shield, is used to regulate the air pressure in the described guard shield.
Described guard shield is hermetic guard shield, and has an optical transmission window, and described optical transmission window is used to provide the printing opacity condition, makes described detecting module can pass through described optical transmission window, obtains the detecting information of described zone of protection.
Described guard shield has a ventilative window, and the pressurized air in the described guard shield is spouting by described ventilative window.
Embodiments of the invention have following beneficial effect:
Outside detection equipment, increase a guard shield; and carry pressurized air to guard shield by an air feed equipment; make the pressure of this guard shield greater than the pressure of external environment condition; thereby can prevent the infiltration of corrosive gas and corrode detection equipment; prevent perhaps dust to be attached on the window eyeglass of detection equipment and influence the detecting effect of detection equipment that effectively protection is in the detection equipment in the rugged surroundings.
Description of drawings
Fig. 1 is a structural representation of the supervisory system of the embodiment of the invention;
Fig. 2 is another structural representation of the supervisory system of the embodiment of the invention;
Fig. 3 is the object event coordinate setting perspective view based on video camera of the embodiment of the invention;
Fig. 4 is the another structural representation of the supervisory system of the embodiment of the invention;
Fig. 5 is applied to the scene synoptic diagram of travelling belt for supervisory system shown in Figure 4;
Fig. 6 is the structural representation of case detecting supervising device shown in Figure 4.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Be illustrated in figure 1 as a structural representation of the supervisory system of the embodiment of the invention, described supervisory system is applicable to the zone of protection of pollutants such as comprising dust or highly corrosive gas in the air, comprising:
Detecting module 101 is arranged at the scene of zone of protection, is used to obtain the detecting information of zone of protection.
Because the air pressure in the guard shield 102 is greater than the air pressure in the zone of protection, therefore, described guard shield 102 is a malleation chamber, form a pressure differential with external environment condition, contaminated air in the zone of protection is difficult to enter in the described guard shield 102, thereby can effectively avoid the interior air of described detecting module 101 and described zone of protection directly to contact, prevent that described detecting module 101 from by the highly corrosive gas attack, preventing that perhaps the detection window of described detecting module 101 from being adhered to by dust.
The difference of Zhen Ce object event as required, described detecting module 101 can adopt dissimilar sensor detectors, for example, described detecting module 101 can be image fire detection device, video camera, infrared sensing detector, ultraviolet transducing detector, transmitting illuminant detector or light-receiving detector etc., certainly, also can comprise the above-mentioned combination of two or more sensor detectors arbitrarily, for example combination of imageing sensor and infrared sensor.According to the difference of the kind of described detecting module 101, the detecting information of the zone of protection that described detecting module 101 gets access to is also different, and described detecting information can be information such as image, optical radiation data or optical attenuation data.
Generally, described detecting module 101 is by receiving the detecting information that light obtains zone of protection, therefore, need to be provided with an optical transmission window on the shell of described detecting module 101, type difference according to described detecting module 101, described optical transmission window can adopt tempered glass, transparent plastic, different materials such as red (purple) outer glass or eyeglass thoroughly, thus the light of the various wave bands that can transmission need.For example, when described detecting module 101 needed to gather video image, window will have the ability of good visible light transmissive; When described detecting module 101 is infrared sensor, window will have the ability of good transmitted infrared light; And when having two types sensor detector in described detecting module 101, window will satisfy the ability of the light of two kinds of sensor detector needs of transmission simultaneously, for example simultaneously saturating visible light and infrared light.
In the foregoing description, can adopt one or more described detecting modules 101, to realize whole coverings of zone of protection according to the size of zone of protection.Concrete, can be according to the angle of coverage of described detecting module 101, calculate the setting height(from bottom) H of described detecting module 101 and luffing angle θ (optical axis that generally is meant detecting module 101 with perpendicular to the reference axis on ground angle), to reach the purpose in comprehensive covered protection zone.In addition; fixed in space at zone of protection; when setting height(from bottom) is limited; can also be according to available setting height(from bottom) H and luffing angle θ; calculate the angle of coverage of described detecting module 101; when calculating a described detecting module 101 can not cover described zone of protection the time, can use a plurality of described detecting modules 101 to carry out covering protection.
In addition, the detecting information of the zone of protection that described supervisory system can also get access to according to described detecting module 101 is judged whether described zone of protection exists the object event of needs detecting, thereby is reported to the police or other processing.
Be illustrated in figure 2 as another structural representation of the supervisory system of the embodiment of the invention, on the basis of embodiment shown in Figure 1, described supervisory system also comprises:
Message processing module 104 is connected with described detecting module 101, is used for according to described detecting information, judges whether described zone of protection exists the object event of needs detecting.Described message processing module 104 can be arranged in the described guard shield 102 with described detecting module 101, promptly is arranged at the zone of protection scene, can certainly be arranged at long-range, by wired or wireless mode and described detecting module 101.Among Fig. 2, described message processing module 104 is arranged at long-range.
In addition, described message processing module 104 can also comprise an alarm module (figure does not show), is used for producing warning message when judging the object event of described zone of protection existence needs detecting.Described message processing module 104 can also show, handle and store various warning messages and detecting information.
In the foregoing description, described air feed module 103 can produce pressurized air by an air compression module, thereby offers described guard shield 102.
As shown in Figure 2, described air feed module 103 comprises: an air pressurized module 1031, be connected with described guard shield 102 by gas pipeline, and be used to produce described pressurized air.Described air pressurized module 1031 is generally an air compressor.
In order to make the pressurized air that is input in the described guard shield 102 be clean pressurized air, described air feed module 103 also needs to comprise an air filtration module 1032, be connected with described air pressurized module 401, be used for filtering the compressed air of needs, remove impurity such as needing compressed airborne dust and steam, obtain clean air to offer described air pressurized module 1031.
In the foregoing description, described air feed module 103 is when described guard shield 102 provides pressurized air, can't learn whether the air pressure in the described guard shield 102 has satisfied condition of work, thereby stop air feed, can't learn also whether the air pressure in the described guard shield 102 is not enough, thereby pressurized air is provided.
Therefore, described supervisory system also comprises:
Pressure transducer 105 is arranged in the described guard shield 102, is used to monitor the air pressure in the described guard shield 102, obtains a monitoring result.
Pressure alarm module 106 is connected with described pressure transducer 105, when being used for air pressure in described monitoring result shows described guard shield 102 less than predetermined threshold value, reports to the police.
Control module 107 is connected with described air pressurized module 1031 with described pressure transducer 105, is used for according to described monitoring result, controls described air pressurized module 1031 and starts or close.Concrete, can be during greater than certain threshold value in the air pressure in the described guard shield 102, controlling described air pressurized module 1031 closes, stop to described guard shield 102 air feed, air pressure in described guard shield 102 is during less than certain threshold value, control described air pressurized module 1031 and start, beginning is to described guard shield 102 air feed.
In addition, abominable degree difference according to the zone of protection environment, the size of the air pressure that needs in the described guard shield 102 is also different, for example, when the corrosive gas concentration in zone of protection is big, the air pressure that needs in the described guard shield 102 is also relatively large, the corrosive gas concentration in zone of protection hour, the air pressure that needs in the described guard shield 102 is also less relatively.Therefore, described supervisory system can also be regulated the air pressure in the described guard shield 102 arbitrarily according to the abominable degree of the environment of described zone of protection.
As shown in Figure 2, described supervisory system also comprises:
Pressure adjusting module 108 is connected with described guard shield 102, is used to regulate the air pressure in the described guard shield 102.Concrete, described pressure adjusting module 108 can be arranged on the gas pipeline between described guard shield 102 and the described air pressurized module 1021, and by adopting the valve equal controller, control is input to the interior compressed-air actuated gas flow of described guard shield 102.For adopting hermetic guard shield,, cooperate with pressure adjusting module 108 by described air pressurized module 1031 and can set up out different pressure ratings in order to tackle requirement without extent of corrosion and concentration gases.
In the foregoing description, at different zone of protections, the structure of described guard shield 102 is also different:
At the zone of protection with corrosive gas, described guard shield 102 can be set to all-sealed structure, and in the embodiment of the invention, the IP of described guard shield 102 (Ingress Protection enters protection) grade can reach more than the IP65.In addition, when described detecting module 101 need obtain the sensor detector of zone of protection illumination for video camera, optical detector etc., described guard shield 102 also needs to have an optical transmission window, described optical transmission window is used to provide the printing opacity condition, make described detecting module 101 can pass through described optical transmission window, obtain the detecting information of described zone of protection.According to the type difference of described detecting module 101, described optical transmission window can adopt tempered glass, transparent plastic, material such as red (purple) outer glass or eyeglass thoroughly.
At zone of protection with dust, described guard shield 102 can have a ventilative window, make that the pressurized air in the described guard shield 102 are spouting by described ventilative window, be attached on the window minute surface of described detecting module 101 and enter described guard shield 102 inside to stop dust.In addition, can also special gas channel be set at described guard shield 102, the air-flow that makes pressurized air form is ejected into earlier on the window of described detecting module 101, and is spouting from described ventilative 1022 windows again, to reach better protection effect.In order to prevent the foreign matter intrusion, can also on described ventilative window, increase wire netting, protection equipment wherein is without prejudice.
In many application places, the happening part of disaster incident is crucial information, for example for fortune coal belt, behind the position coordinates of determining the disaster incident, just can be according to the movement velocity of fortune coal belt, predict its post exercise position and zone, thereby can implement the rescue of disaster fast.
With above-mentioned detecting module 101 is that video camera is an example, and the ground coordinate that how to calculate the object event generation is described.
Be illustrated in figure 3 as the object event coordinate setting perspective view based on video camera of the embodiment of the invention, suppose the ground location that the P point takes place for object event, (x y) is the coordinate of P, P
1For being the subpoint of P point on camera sensor, (x
1, y
1) be P
1Coordinate.According to projection relation shown in Figure 3, the ground coordinate that described object event takes place can adopt following formula to calculate:
y＝H(tgθ+y
1/F)/(1-y
1tgθ/F)
x＝x
1/F×y
1
Wherein, (x y) is the ground coordinate that described object event takes place, and described video camera is arranged at coordinate position top, ground (0,0), and H is the setting height(from bottom) of described video camera, and θ is that the setting angle of described video camera is (x
1, y
1) be that (F is described focus of camera for x, y) the subpoint coordinate on camera sensor.
The function of the ground coordinate that the aforementioned calculation object event takes place can realize that at this moment, described message processing module 104 comprises by the message processing module in the foregoing description 104:
Computing module 1031 is used for calculating the ground coordinate that described object event takes place when having the object event of described needs detecting.Described computing module 103 adopts the aforementioned calculation formula to calculate the ground coordinate that described object event takes place.
In addition, can also pass through coordinate translation, rotation, calculate the ground coordinate that described object event takes place (x, y) the respective coordinates of planimetric coordinates system (X, Y), to make things convenient for User Recognition.
The false coordinate side-play amount is (x
0, y
0), the anglec of rotation is β, then the coordinate after the conversion is:
X＝x
0+xcos(β)+ysin(β)
Y＝y
0-xsin(β)+ycos(β)
Be illustrated in figure 4 as the another structural representation of the supervisory system of the embodiment of the invention, this supervisory system comprises:
The case detecting supervising device is arranged at the zone of protection scene, comprising: case detecting sensing and signal processor 401 and special-purpose outer shield 403.
Case detecting sensing and signal processor 401, the function that detecting module 101 in execution the foregoing description and message processing module 104 are carried out, be used to obtain the detecting information of zone of protection, and can analyze described detecting information, judge whether to exist the object event of needs detecting.
Case detecting sensing and signal processor window 402 are equivalent to the optical transmission window of the detecting module 101 in the foregoing description, are used to provide the printing opacity condition.
Special-purpose outer shield 403 is carried out the function that guard shield 102 is carried out in the foregoing description, is used to case detecting sensing and signal processor 401 to create positive-pressure closing or air flow jet space.
Special-purpose outer shield window 404, the optical transmission window or the ventilative window that are equivalent to the guard shield 102 in the foregoing description, the light that is used for the various wave bands of transmission case detecting sensing and signal processor 401 needs, perhaps make pressurized air stream spouting, and be ejected on case detecting sensing and the signal processor window 402 from special-purpose outer shield 403.
Pressure-regulating valve 405 is carried out the function that pressure adjusting module 108 is carried out in the foregoing description, is used for carrying out the adjusting of cavity indoor pressure at airtight special protection cover 403, makes the enough big pressure differential of the inside and outside generation of chamber, and prevents the corrosive gas intrusion.
Alarm monitoring and management system 409, carry out the function that message processing module 104, control module 107 and pressure alarm module 106 in the foregoing description are carried out, be used on the one hand to receive the various detecting information that case detecting sensing and signal processor 401 send, and those detecting information are done essential analysis, processing, arrangement and storage.When not possessing the function of the object event that judges whether to exist the needs detecting for case detecting sensing and signal processor 401, alarm monitoring and management system 409 also will be born above-mentioned arbitration functions, and realize warning.On the other hand, can also be according to the monitoring result of pressure transducer 408, air pressurization device 406 is controlled monitoring with duty.
Fig. 5 is applied to the scene synoptic diagram of travelling belt for supervisory system shown in Figure 4, travelling belt is carrying the material of production usefulness, as coal etc., advance with certain speed v, the speed of 1～5m/s for example, the case detecting supervising device is installed on the top of travelling belt, and its setting height(from bottom) is H, and setting angle is θ.As can be seen from Figure 5, only the case detecting supervising device need be installed on the scene, the other parts of supervisory system can be installed on the pumping plant or the central control room of far-end.
Fig. 6 is the structural representation of case detecting supervising device shown in Figure 4; this case detecting supervising device is applied to have the place of dust; the case detecting supervising device is made up of case detecting sensing and signal processor 401 and special-purpose outer shield 403; special-purpose outer shield 403 is provided with compressed air inlet 4031 and window 4032; window 4032 is an open design; it is spouting to be beneficial to produce pressurized air stream; prevent that dust is attached on the window of case detecting sensing and signal processor 401; also be provided with wire netting on the window 4032, protection equipment wherein is without prejudice.In addition, also be provided with pressure transducer 408 in the special-purpose outer shield 403, to monitor the air pressure in the special-purpose outer shield 403.
The embodiment of the invention also provides a kind of protective device, is applied in the supervisory system, and described supervisory system comprises detecting module, and described detecting module is used to obtain the detecting information of zone of protection.
Described protective device comprises:
Guard shield is arranged at described detecting module periphery;
The air feed module is connected with described guard shield, is used for providing pressurized air to described guard shield, makes air pressure in the described guard shield greater than the air pressure in the described zone of protection, directly contacts with air in the described zone of protection to avoid described detecting module.
Because the air pressure in the guard shield is greater than the air pressure in the zone of protection, therefore, described guard shield is a malleation chamber, form a pressure differential with external environment condition, contaminated air in the zone of protection is difficult to enter in the described guard shield, thereby can effectively avoid the interior air of described detecting module and described zone of protection directly to contact, prevent described detecting module, prevent that perhaps the detection window of described detecting module from being adhered to by dust by the highly corrosive gas attack.
In the foregoing description, described air feed module can produce pressurized air by an air compression module, thereby offers described guard shield.
Therefore, described air feed module comprises: an air pressurized module, be connected with described guard shield by gas pipeline, and be used to produce described pressurized air.Described air pressurized module is generally an air compressor.
In order to make the pressurized air that is input in the described guard shield be clean pressurized air, described air feed module also needs to comprise an air filtration module, be connected with described air pressurized module, be used for filtering the compressed air of needs, remove impurity such as needing compressed airborne dust and steam, obtain clean air to offer described air pressurized module.
In the foregoing description, described air feed module can't be learnt whether the air pressure in the described guard shield has satisfied condition of work, thereby stop air feed when described guard shield provides pressurized air, can't learn also whether the air pressure in the described guard shield is not enough, thereby pressurized air is provided.
Therefore, described protective device also comprises:
Pressure transducer is arranged in the described guard shield, is used to monitor the air pressure in the described guard shield, obtains a monitoring result.
The pressure alarm module is connected with described pressure transducer, when being used for air pressure in described monitoring result shows described guard shield less than predetermined threshold value, reports to the police.
Control module is connected with described air pressurized module with described pressure transducer, is used for according to described monitoring result, controls described air pressurized module 1 and starts or close.Concrete, can during greater than certain threshold value, control described air pressurized module and close in the air pressure in the described guard shield, stop to described guard shield air feed, air pressure in described guard shield is controlled described air pressurized module and is started during less than certain threshold value, and beginning is to described guard shield air feed.
In addition, abominable degree difference according to the zone of protection environment, the size of the air pressure that needs in the described guard shield is also different, for example, when the corrosive gas concentration in zone of protection is big, the air pressure that needs in the described guard shield is also relatively large, the corrosive gas concentration in zone of protection hour, the air pressure that needs in the described guard shield is also less relatively.Therefore, described supervisory system can also be regulated the air pressure in the described guard shield arbitrarily according to the abominable degree of the environment of described zone of protection.
Therefore, described protective device also comprises:
Pressure adjusting module is connected with described guard shield, is used to regulate the air pressure in the described guard shield.Concrete, described pressure adjusting module can be arranged on the gas pipeline between described guard shield and the described air pressurized module, and by adopting the valve equal controller, control is input to the interior compressed-air actuated gas flow of described guard shield.For adopting hermetic guard shield,, cooperate with pressure adjusting module by described air pressurized module and can set up out different pressure ratings in order to tackle requirement without extent of corrosion and concentration gases.
In the foregoing description, at different zone of protections, the structure of described guard shield is also different:
At zone of protection with corrosive gas, described guard shield can be set to all-sealed structure, in addition, at described detecting module is that video camera, optical detector etc. are need obtain the sensor detector of zone of protection illumination the time, described guard shield also needs to have an optical transmission window, described optical transmission window is used to provide the printing opacity condition, makes described detecting module can pass through described optical transmission window, obtains the detecting information of described zone of protection.According to the type difference of described detecting module, described optical transmission window can adopt tempered glass, transparent plastic, material such as red (purple) outer glass or eyeglass thoroughly.
At zone of protection with dust, described guard shield can have a ventilative window, make that the pressurized air in the described guard shield is spouting by described ventilative window, be attached on the window minute surface of described detecting module and enter described guard shield inside to stop dust.In addition, can also special gas channel be set at described guard shield, the air-flow that makes pressurized air form is ejected into earlier on the window of described detecting module, and is spouting from described ventilative window again, to reach better protection effect.In order to prevent the foreign matter intrusion, can also on described ventilative window, increase wire netting, protection equipment wherein is without prejudice.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. a supervisory system is characterized in that, comprising:
Detecting module is used to obtain the detecting information of zone of protection;
Guard shield is arranged at described detecting module periphery;
The air feed module is connected with described guard shield, is used for providing pressurized air to described guard shield, makes air pressure in the described guard shield greater than the air pressure in the described zone of protection, directly contacts with air in the described zone of protection to avoid described detecting module.
2. supervisory system according to claim 1 is characterized in that, also comprises:
Message processing module is connected with described detecting module, is used for according to described detecting information, judges whether described zone of protection exists the object event of needs detecting.
3. supervisory system according to claim 1 is characterized in that, described air feed module comprises:
The air pressurized module is connected with described guard shield, is used to produce described pressurized air.
4. supervisory system according to claim 3 is characterized in that, described air feed module also comprises:
The air filtration module is connected with described air pressurized module, is used for the compressed air of needs is filtered, and obtains clean air to offer described air pressurized module.
5. supervisory system according to claim 3 is characterized in that, also comprises:
Pressure transducer is arranged in the described guard shield, is used to monitor the air pressure in the described guard shield, obtains a monitoring result.
6. supervisory system according to claim 5 is characterized in that, also comprises:
The pressure alarm module is connected with described pressure transducer, when being used for air pressure in described monitoring result shows described guard shield less than predetermined threshold value, reports to the police.
7. supervisory system according to claim 5 is characterized in that, also comprises:
Control module is connected with described air pressurized module with described pressure transducer, is used for according to described monitoring result, controls described air pressurized module and starts or close.
8. supervisory system according to claim 1 is characterized in that, also comprises:
Pressure adjusting module is connected with described guard shield, is used to regulate the air pressure in the described guard shield.
9. supervisory system according to claim 1 is characterized in that:
Described guard shield is hermetic guard shield, and has an optical transmission window, and described optical transmission window is used to provide the printing opacity condition, makes described detecting module can pass through described optical transmission window, obtains the detecting information of described zone of protection.
10. supervisory system according to claim 1 is characterized in that:
Described guard shield has a ventilative window, makes that the pressurized air in the described guard shield is spouting by described ventilative window.
11. supervisory system according to claim 1 is characterized in that:
Described detecting module is a video camera;
Described message processing module comprises:
Computing module is used for calculating the ground coordinate that described object event takes place when having the object event of described needs detecting, and the computing formula of the ground coordinate that described object event takes place is:
y＝H(tgθ+y
1/F)/(1-y
1tgθ/F)
x＝x
1/F×y
1
Wherein, (x y) is the ground coordinate that described object event takes place, and described video camera is arranged at coordinate position top, ground (0,0), and H is the setting height(from bottom) of described video camera, and θ is that the setting angle of described video camera is (x
1, y
1) be that (F is described focus of camera for x, y) the subpoint coordinate on camera sensor.
12. a protective device is applied in the supervisory system, described supervisory system comprises detecting module, and described detecting module is used to obtain the detecting information of zone of protection, it is characterized in that, comprising:
Guard shield is arranged at described detecting module periphery;
The air feed module is connected with described guard shield, is used for providing pressurized air to described guard shield, makes air pressure in the described guard shield greater than the air pressure in the described zone of protection, directly contacts with air in the described zone of protection to avoid described detecting module.
13. protective device according to claim 12 is characterized in that, described air feed module comprises:
The air pressurized module is connected with described guard shield, is used to produce described pressurized air.
14. protective device according to claim 13 is characterized in that, described air feed module also comprises:
The air filtration module is connected with described air pressurized module, is used for the compressed air of needs is filtered, and obtains clean air to offer described air pressurized module.
15. protective device according to claim 13 is characterized in that, also comprises:
Pressure transducer is arranged in the described guard shield, is used to monitor the air pressure in the described guard shield, obtains a monitoring result.
16. protective device according to claim 15 is characterized in that, also comprises:
The pressure alarm module is connected with described pressure transducer, when being used for air pressure in described monitoring result shows described guard shield less than predetermined threshold value, reports to the police.
17. protective device according to claim 13 is characterized in that, also comprises:
Control module is connected with described air pressurized module with described pressure transducer, is used for according to described monitoring result, controls described air pressurized module and starts or close.
18. protective device according to claim 12 is characterized in that, also comprises:
Pressure adjusting module is connected with described guard shield, is used to regulate the air pressure in the described guard shield.
19. protective device according to claim 12 is characterized in that:
Described guard shield is hermetic guard shield, and has an optical transmission window, and described optical transmission window is used to provide the printing opacity condition, makes described detecting module can pass through described optical transmission window, obtains the detecting information of described zone of protection.
20. protective device according to claim 12 is characterized in that:
Described guard shield has a ventilative window, and the pressurized air in the described guard shield is spouting by described ventilative window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102352146A CN101692299B (en) | 2009-09-28 | 2009-09-28 | Monitoring system and protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102352146A CN101692299B (en) | 2009-09-28 | 2009-09-28 | Monitoring system and protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101692299A true CN101692299A (en) | 2010-04-07 |
| CN101692299B CN101692299B (en) | 2012-03-07 |
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ID=42080982
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102352146A Expired - Fee Related CN101692299B (en) | 2009-09-28 | 2009-09-28 | Monitoring system and protective device |
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| Country | Link |
|---|---|
| CN (1) | CN101692299B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016006A (en) * | 2012-12-12 | 2013-04-03 | 山西科达自控工程技术有限公司 | Video monitoring device of wind driven dust removal coal mining machine |
| CN103634520A (en) * | 2012-08-29 | 2014-03-12 | 华为技术有限公司 | Video monitoring camera head protection method and device |
| CN105101717A (en) * | 2014-05-13 | 2015-11-25 | 宇龙计算机通信科技(深圳)有限公司 | Gas insulation protective device for mobile terminal |
| CN106292497A (en) * | 2016-08-30 | 2017-01-04 | 许曙青 | A kind of field construction safety and Health monitoring alarm instrument |
-
2009
- 2009-09-28 CN CN2009102352146A patent/CN101692299B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103634520A (en) * | 2012-08-29 | 2014-03-12 | 华为技术有限公司 | Video monitoring camera head protection method and device |
| CN103634520B (en) * | 2012-08-29 | 2017-04-12 | 华为技术有限公司 | Video monitoring camera head protection method and device |
| CN103016006A (en) * | 2012-12-12 | 2013-04-03 | 山西科达自控工程技术有限公司 | Video monitoring device of wind driven dust removal coal mining machine |
| CN105101717A (en) * | 2014-05-13 | 2015-11-25 | 宇龙计算机通信科技(深圳)有限公司 | Gas insulation protective device for mobile terminal |
| CN105101717B (en) * | 2014-05-13 | 2018-08-24 | 宇龙计算机通信科技(深圳)有限公司 | Gas isolation protection device for mobile terminal |
| CN106292497A (en) * | 2016-08-30 | 2017-01-04 | 许曙青 | A kind of field construction safety and Health monitoring alarm instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101692299B (en) | 2012-03-07 |
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