CN102548363A - Control method for machine cabinet and communication device - Google Patents
Control method for machine cabinet and communication device Download PDFInfo
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- CN102548363A CN102548363A CN2011104594541A CN201110459454A CN102548363A CN 102548363 A CN102548363 A CN 102548363A CN 2011104594541 A CN2011104594541 A CN 2011104594541A CN 201110459454 A CN201110459454 A CN 201110459454A CN 102548363 A CN102548363 A CN 102548363A
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- rack
- cabinet door
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- monitor
- tight lock
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Abstract
The invention discloses a control method for a machine cabinet. The control method for the machine cabinet comprises the following steps of: monitoring the working state of a radiating module of the machine cabinet, wherein the radiating module is arranged inside the machine cabinet and is used for radiating the machine cabinet; and when the working state of the radiating module is abnormal, removing a locking force of a cabinet door of the machine cabinet so as to open the cabinet door. Correspondingly, the invention also discloses a communication device and communication equipment. Through the technical scheme, according to radiating and denoising requirements of a working environment on the machine cabinet, the working state of the machine cabinet is automatically regulated to meet different radiating and denoising requirements on the machine cabinet under different running condition of the machine cabinet or in different working environments so as to fulfill an energy-saving aim.
Description
Technical field
The present invention relates to communication equipment, relate in particular to a kind of control method and communicator of rack.
Background technology
Electronic component in the communication equipment can produce heat when work; For guaranteeing the safe operation of equipment, need cool off it, and the most frequently used type of cooling is through air driven device such as fan etc.; The drive air fluxion strap is walked heat, reaches the purpose of Control work temperature.But the air driven device can produce noise when operation, and along with rotating speed increases, noise also can be increasing.
Prior art generally is integrated in rack inside with noise reduction module; Rack itself is exactly a ventilation noise reduction rack; And rack is carried out sound insulation and is handled, and forces noise mainly to be emitted by the passage that is provided with the ventilation noise reduction module, and adds denoising device in the ventilation noise reduction module; Be used to reduce noise, thereby realize the heat radiation decrease of noise functions through this passage.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Reaching of taking into account system noise reduction target only in the existing cabinet design considered the heat dissipation problem under cooling machine cabinet system exception or other particular job environment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of control method and communicator of rack; Heat radiation and noise reduction requirement according to operational environment; Automatically regulate the working condition of rack; Satisfy rack under different ruuning situation or different working environments, to the different demands of cooling machine cabinet and noise reduction.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of control method of rack comprises:
The operating state of the radiating module of monitoring rack, said radiating module is arranged in the rack, is said cooling machine cabinet;
When the operating state that monitors said radiating module occurs when unusual, cancel the tight lock power of said rack cabinet door, so that said cabinet door is opened.
The embodiment of the invention also provides the control method of another kind of rack, comprising:
Ambient condition around the monitoring rack;
Satisfy when pre-conditioned when monitoring said ambient condition, cancel the tight lock power of the cabinet door of said rack, so that said cabinet door is opened.
The embodiment of the invention also provides a kind of communicator, comprising:
Rack, radiator, pretension module, monitor, controller and switch module;
Said radiator is arranged in the rack, is said cooling machine cabinet;
Said pretension module is installed on the cabinet door of said rack, provides the cabinet door that makes said rack closed tight lock power; Said monitor is monitored the operating state of said radiator;
Said controller, the operating state that detects said radiator at said monitor occur controlling said pretension module when unusual and cancel the tight lock power to said cabinet door, so that said switch module is opened said cabinet door.
The embodiment of the invention also provides another kind of communicator, comprising:
Rack, radiator, pretension module, monitor, controller and switch module;
Said radiator is arranged in the rack, is said cooling machine cabinet;
Said pretension module is installed on the cabinet door of said rack, provides the cabinet door that makes said rack closed tight lock power; Said monitor is monitored the ambient condition around the said rack;
Said controller monitors said ambient condition at said monitor and satisfies when pre-conditioned, controls said pretension module and cancels the tight lock power to said cabinet door, so that said switch module is opened said cabinet door.
Rack control method and communicator that the embodiment of the invention provides; Operating state or the operational environment of rack of the cooling system through the monitoring rack are confirmed radiating requirements and noise reduction demand under the different situations, and according to different demands; Controlling said rack cabinet door opens; Change the heat radiation approach, thereby satisfy rack under different ruuning situation or different working environments, to the different demands of cooling machine cabinet and noise reduction.
Description of drawings
The control method flow chart one of rack in Fig. 1 embodiment of the invention one;
Fig. 2 is the control method flowchart 2 of rack in the embodiment of the invention one;
Fig. 3 is the control method flow chart 3 of rack in the embodiment of the invention one;
Fig. 4 is the control method flow chart one of another rack in the embodiment of the invention one;
Fig. 5 is the control method flowchart 2 of another rack in the embodiment of the invention one;
Fig. 6 is the structured flowchart one of communicator in the embodiment of the invention two;
Fig. 7 is the structured flowchart two of another communicator in the embodiment of the invention two.
Embodiment
The embodiment of the invention provides a kind of rack control method and communicator, can be according to the heat radiation noise reduction requirement under the different operating environment, the working condition of regulating rack automatically.
The different operating environment has different demands to the heat radiation and the noise reduction of rack.In the practical application, ruuning situation or the different working environments different according to rack might be the different time sections in rack work, and it is different with the requirement of noise reduction to dispel the heat, and noise is littler when for example requiring rack to work by day, or noise is littler when requiring work evening; Whether have the people movable around also might looking rack, requiring of heat radiation and noise reduction is different; Also have when the heat radiation of rack goes wrong, the demand of heat radiation is surpassed the situation appearance of noise reduction demand.So, be necessary to take different heat radiation approach and noise control method to different heat radiations and noise reduction demand.Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.Embodiment described herein is only in order to explaining the present invention, and is not used in qualification the present invention.
Embodiment one
The embodiment of the invention provides a kind of control method of rack, and is as shown in Figure 1, and this method comprises:
The operating state of the radiating module of step 101, monitoring rack, said radiating module is arranged in the rack, is said cooling machine cabinet;
The radiating module of the said rack of this step is generally air driven device such as fan etc., also can be other heat abstractor certainly.The operating state of said monitoring radiating module can be whether the monitoring radiating module works, whether normal and out-of-work time of radiating module of operating state or the like, and also can be through the effect of monitoring radiating module work, like the temperature in the monitoring rack.
The operating state of working as the radiating module of rack in this step occurs unusual; If the heat radiation requirement when not having other heat radiation approach to satisfy rack work; Can only wait for and alarm signal occur and equipment quits work; Reliability when this can cause communication device works reduces, and at this moment radiating requirements surpasses the noise reduction demand, and the cabinet door that need open rack dispels the heat.
Prior art if heat radiation goes wrong, can only be waited for alarm signal occurring and communication equipment quits work.Under this situation, the said rack control method of embodiments of the invention, the cabinet door that can open rack automatically dispels the heat, and does not need communication equipment to quit work, and has improved the reliability of communication device works.
Wherein, the operating state of said radiating module occurs unusual, specifically comprises:
The out-of-work time of said radiating module surpasses a predefined time value, and the temperature in the perhaps said rack is higher than a predefined temperature value.
Whether the operating state of monitoring radiating module occurs unusually, and concrete implementation is various, enumerates no longer one by one at this.
Need to prove that also the tight lock power of rack cabinet door can be provided by the magnet or the buckle that are installed on the said rack cabinet door, can control the release and the recovery of this coupling mechanism force through correspondent control circuits and transmission device.
Alternatively, as shown in Figure 2, except that above-mentioned steps, the control method of said rack also can comprise:
Rack control method in the embodiments of the invention is got rid of when fault, and the operating state of radiating module is recovered just often, but the cabinet door of auto-closing rack forces noise to be emitted by the passage that is provided with the ventilation noise reduction module, and separating vibration reduces noise.
Alternatively, as shown in Figure 3, except that step recited above, said control method also can comprise:
Even if the operating state of radiating module occurs unusual, the control method in the present embodiment also can be opened the cabinet door and dispel the heat, and can the too high triggering of Yin Wendu not report to the police; Cause equipment out of service; And the abnormal conditions that radiating module occurs can be learnt through failure alarm signal, can select suitable maintenance time then voluntarily; Keep in repair, do not influence the use of communication equipment.
The embodiment of the invention is through above technical scheme; Operating state or the operational environment of rack of the cooling system through the monitoring rack are confirmed radiating requirements and noise reduction demand under the different situations, and according to different demands; Controlling said rack cabinet door opens; Change the heat radiation approach, thereby satisfy rack under different ruuning situation or different working environments, to the different demands of cooling machine cabinet and noise reduction; Further,, keep in repair, fix a breakdown early to notify the staff when the operating state that monitors said radiating module occurs sending failure alarm signal when unusual.
The embodiment of the invention also provides the control method of another kind of rack, and is as shown in Figure 4, and this method comprises:
Ambient condition around step 201, the monitoring rack;
Ambient condition in this step around the said rack of monitoring obtains heat radiation and the noise reduction requirement of said rack in concrete applied environment.In concrete the application, the environment around can monitoring according to the transducer of concrete application choice specific function is used to obtain the corresponding environmental information of rack surrounding environment.For example; When not having the personnel activity around the rack, noise reduction requires to reduce, and also need not consider the radiation that communication equipment is external; The cabinet door that can open rack dispels the heat; At this moment can pass through the acoustic information of sound detection device surrounding being monitored, thereby whether have the people movable around judging, also can use infrared sensor to monitor certainly.
According to the environmental state information that monitors, judge whether that the cabinet door that reaches preset opens condition in this step.For example, according to the acoustic information that sound detection device monitors, if judge when unmanned activity reaches certain hour, can think does not have the personnel activity around the rack, reaches the condition that preset cabinet door is opened.
The automatic open and close of this step cabinet door can receive command signal and realizes by the device that command signal is opened the door through one.Wherein a kind of implementation is that the connection of automatic door closer is changed slightly, and persons skilled in the art can realize this change easily, no longer are described in detail at this.
Rack control method in the present embodiment; According to the ambient condition that monitors, judge whether and can dispel the heat through opening rack cabinet door, both satisfied of the difference heat radiation noise reduction requirement of different operating environment to rack; Through changing the heat radiation approach, reached purpose of energy saving again.
Alternatively, the said ambient condition of present embodiment is an ambient temperature, saidly pre-conditionedly is: said ambient temperature is higher than preset temperature threshold.
Alternatively, the said ambient condition of present embodiment is the personnel activity's situation around the said rack, saidly pre-conditionedly is: do not have personnel activity's time to surpass preset time threshold around the said rack.
The different operating environment has different demands to the heat radiation and the noise reduction of rack, and heat radiation is different with the noise reduction demand, and the ambient condition amount of detection is also different, and the pre-conditioned of the cabinet door opened/closed of correspondence also can difference.In the practical application, can select corresponding transducer, carry out flexible design, narrate no longer one by one at this according to the real needs of rack to heat radiation and noise reduction.For example, when whether the personnel activity being arranged around the monitoring rack, can pass through the acoustic information of sound detection device surrounding being monitored, thereby whether have the people movable around judging, also can use infrared sensor to monitor certainly.
Alternatively, as shown in Figure 5, the said control method of the embodiment of the invention also can comprise:
Step 203, after the cabinet door of said rack is opened, the fan of controlling the radiating module of said rack slows down or stall, to reduce system power dissipation.
Generally speaking, when radiating module was operated in strong radiating state, power consumption was big, for example air driven device such as fan, and rotating speed is big more, and heat-sinking capability is strong more.According to the ambient condition that monitors; When judging that can open the cabinet door dispels the heat; Heat radiation is no longer dependent on radiating module, so be in the consideration of energy-conservation aspect, can reduce the power consumption of radiating module or close radiating module; As reduce the rotating speed of fan or close fan, reach purpose of energy saving thereby can regulate automatically according to ambient condition like this.
Alternatively, the said control method of the embodiment of the invention also can comprise:
Step 204, do not satisfy saidly when pre-conditioned, recover the tight lock power of said cabinet door, so that said cabinet door is closed when monitoring said ambient condition.
When said rack cabinet door is closed, but separating vibration makes that the noise in the said rack does not leak.The said control method of the embodiment of the invention is according to the ambient condition that monitors, when judgement needs closed cabinet door; It is movable as the people is arranged around rack; When personal safety and healthy consideration being needed closed cabinet door, realize that automatically closed cabinet door isolates radiation and noise, thereby the environment-identification state is controlled automatically automatically; Balance radiating requirements and noise reduction demand, thus reach purpose of energy saving.
Tight lock power is to be provided by the magnet or the buckle that are installed on the said rack cabinet door described in the present embodiment, can control the release and the recovery of this coupling mechanism force through correspondent control circuits and transmission device.
The embodiment of the invention is through above technical scheme; Through the operational environment of monitoring rack, confirm radiating requirements and noise reduction demand under the varying environment state, and according to different demands; Controlling said rack cabinet door opens; Change the heat radiation approach, thereby satisfy rack under different ruuning situation or different working environments, to the different demands of cooling machine cabinet and noise reduction.
Embodiment two
Corresponding to the control method among the embodiment one, the embodiment of the invention also provides a kind of communicator, and is as shown in Figure 6, and this device comprises:
The tight lock power that control pretension module 13 is cancelled cabinet door 111 when unusual appears in controller 15, the operating state that detects radiator 12 at monitor 14, so that switch module 16 is opened cabinet door 111.
Wherein, pretension module 13 is used to be provided for the tight lock power of the cabinet door of closed rack, and pretension module 13 is magnet or buckle.
For example pretension module 13 is an electromagnet, and perhaps the magnetic buckle provides magnetic force during energising; Make the tight lock power that produces closed cabinet door, so that said cabinet door is closed, the cabinet door of rack is locked; Force noise to emit, reach the purpose of vibration insulation and noise reduction by the passage that is provided with the ventilation noise reduction module.
The implementation of pretension module 13 is not limited to the above, also can be mechanical type or other electronic type module.
If pretension module 13 implementations are mechanical type, controller 15 links to each other with switch module 16.
If pretension module 13 is the electronic type module, alternatively, controller 15 links to each other with switch module 16 with pretension module 13, and perhaps controller 15 links to each other with pretension module 13.Pretension module 13 shown in Figure 6 is the electronic type module.
Further, controller 15 recovers just often in the operating state that monitor 14 detects radiator 12, and the tight lock power that control pretension module 13 is recovered cabinet door 111 is so that the cabinet door is closed.
Alternatively, said control unit also can comprise:
The said communicator of present embodiment is according to the difference heat radiation noise reduction requirement of communicator under the different operating environment, when the radiating module operation irregularity; Control rack cabinet door is opened automatically and is dispelled the heat; Solve the heat dissipation problem under the abnormal conditions, do not needed communication equipment to quit work, the reliability when having improved communication device works; Satisfy rack simultaneously under different ruuning situation, to the different demands of cooling machine cabinet and noise reduction; Further, send failure alarm signal report radiator and break down, get rid of when the radiator fault, work recovers just often, the cabinet door vibration insulation and noise reduction of auto-closing rack.
Corresponding to the control method among the embodiment one, the embodiment of the invention also provides another communicator, and is as shown in Figure 7, and this communicator comprises:
Wherein, according to the difference of the implementation of pretension module 13, as shown in Figure 7, pretension module 13 is the mechanical type module, and controller 15 can link to each other with switch module 16.
Alternatively, controller 15 links to each other with switch module 16 with pretension module 13, and perhaps controller 15 links to each other with pretension module 13.
Further, the said communicator of present embodiment also comprises:
Heat radiation adjustment module 18 is used for after rack cabinet door 111 is opened, and the fan of controller cabinet heat radiation device slows down or stall, to reduce system power dissipation.
The input of heat radiation adjustment module 18 links to each other with the output of controller 14, and the output of heat radiation adjustment module 18 links to each other with radiator 12.Communicator in the present embodiment; According to the ambient condition that monitors, judge whether and can dispel the heat through the cabinet door of opening rack, both satisfied the difference heat radiation noise reduction requirement of communicator under the different operating environment; Through changing the heat radiation approach, reach energy-conservation purpose again.
Wherein, the said monitor 14 of present embodiment is arranged at the outside of said rack, is convenient to monitor the outside ambient conditions of said rack.
Wherein, monitor 14 includes but not limited to infrared sensor or sound detection device.
Wherein, switch module 16 includes but not limited to automatic door closer or hydraulic pressure hinge.In addition, switch module 16 also can be realized through the driven by motor mechanical device.
Analyze of the heat radiation noise reduction requirement of concrete operational environment to communicator; Again according to the requirement of concrete heat radiation noise reduction; Select corresponding transducer or supervising device to constitute monitor, and combine concrete control program can realize regulating automatically the function of communicator operating state according to ambient condition.
The said communicator of present embodiment through automatic environment-identification state, and is confirmed the difference heat radiation noise reduction requirement of communicator under the different operating environment according to ambient condition; When ambient condition satisfies the preset trigger condition; Triggering rack cabinet door is opened automatically and is dispelled the heat, and strengthens radiating effect, reduces the power consumption of radiator simultaneously; Satisfy rack under the different environment state, to the different demands of heat radiation and noise reduction.
Need to prove that under the situation of not conflicting, the characteristic in the embodiment of the invention is combination in any each other.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (20)
1. the control method of a rack is characterized in that, comprising:
The operating state of the radiating module of monitoring rack, said radiating module is arranged in the rack, is said cooling machine cabinet;
When the operating state that monitors said radiating module occurs when unusual, cancel the tight lock power of said rack cabinet door, so that said cabinet door is opened.
2. method according to claim 1 is characterized in that, the operating state of said radiating module occurs unusual, specifically comprises:
The out-of-work time of said radiating module surpasses a predefined time value, and the temperature in the perhaps said rack is higher than a predefined temperature value.
3. method according to claim 1 and 2 is characterized in that, also comprises:
Recover just often when the operating state that monitors said radiating module, recover the tight lock power of said cabinet door, so that said cabinet door is closed.
4. according to each described method of claim 1-3, it is characterized in that, also comprise:
When the operating state that monitors said radiating module occurs sending the failure alarm signal that said radiating module breaks down when unusual, keep in repair to notify the staff.
5. the control method of a rack is characterized in that, comprising:
Ambient condition around the monitoring rack;
Satisfy when pre-conditioned when monitoring said ambient condition, cancel the tight lock power of the cabinet door of said rack, so that said cabinet door is opened.
6. method according to claim 5 is characterized in that,
Said ambient condition is an ambient temperature, saidly pre-conditionedly is: said ambient temperature is higher than preset temperature threshold.
7. method according to claim 5 is characterized in that, said ambient condition is the personnel activity's situation around the said rack, saidly pre-conditionedly is: do not have personnel activity's time to surpass preset time threshold around the said rack.
8. according to each described method of claim 5-7, it is characterized in that, also comprise:
After the cabinet door of said rack was opened, the fan of controlling the radiating module of said rack slowed down or stall, to reduce power consumption.
9. according to each described method of claim 5-7, it is characterized in that, also comprise:
Do not satisfy saidly when pre-conditioned when monitoring said ambient condition, recover the tight lock power of said cabinet door, so that said cabinet door is closed.
10. according to each described method of claim 5-7, it is characterized in that said tight lock power is to be provided by the magnet or the buckle that are installed on the said rack cabinet door.
11. a communicator is characterized in that, comprising:
Rack, radiator, pretension module, monitor, controller and switch module;
Said radiator is arranged in the rack, is said cooling machine cabinet;
Said pretension module is installed on the cabinet door of said rack, provides the cabinet door that makes said rack closed tight lock power; Said monitor is monitored the operating state of said radiator;
Said controller, the operating state that detects said radiator at said monitor occur controlling said pretension module when unusual and cancel the tight lock power to said cabinet door, so that said switch module is opened said cabinet door.
12. communicator according to claim 11 is characterized in that, said controller recovers just often in the operating state that said monitor detects said radiator, controls the tight lock power of said pretension module recovery to said cabinet door, so that said cabinet door is closed.
13. according to claim 11 or 12 described communicators, it is characterized in that, also comprise:
Alarm module is used for occurring sending the failure alarm signal that said radiator breaks down when unusual when the operating state that monitors said radiator, keeps in repair to notify the staff.
14. a communicator is characterized in that, comprising:
Rack, radiator, pretension module, monitor, controller and switch module;
Said radiator is arranged in the rack, is said cooling machine cabinet;
Said pretension module is installed on the cabinet door of said rack, provides the cabinet door that makes said rack closed tight lock power; Said monitor is monitored the ambient condition around the said rack;
Said controller monitors said ambient condition at said monitor and satisfies when pre-conditioned, controls said pretension module and cancels the tight lock power to said cabinet door, so that said switch module is opened said cabinet door.
15. communicator according to claim 14 is characterized in that, said controller monitors said ambient condition at said monitor and does not satisfy saidly when pre-conditioned, recovers the tight lock power of said cabinet door, so that said cabinet door is closed.
16. according to claim 14 or 15 described devices, it is characterized in that, also comprise:
Heat radiation adjustment module, said heat radiation adjustment module are after the cabinet door of said rack is opened, and the fan of controlling said cooling machine cabinet device slows down or stall, to reduce system power dissipation.
17. according to claim 14 or 15 each described devices, it is characterized in that,
Said monitor is arranged at the outside of said rack.
18. according to claim 14 or 15 each described devices, it is characterized in that,
Said monitor is infrared sensor or sound detection device.
19. according to claim 14 or 15 each described devices, it is characterized in that,
Said pretension module is magnet or buckle.
20. according to claim 14 or 15 each described devices, it is characterized in that,
Said switch module is automatic door closer or hydraulic pressure hinge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104594541A CN102548363A (en) | 2011-12-31 | 2011-12-31 | Control method for machine cabinet and communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104594541A CN102548363A (en) | 2011-12-31 | 2011-12-31 | Control method for machine cabinet and communication device |
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| CN102548363A true CN102548363A (en) | 2012-07-04 |
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| CN2011104594541A Pending CN102548363A (en) | 2011-12-31 | 2011-12-31 | Control method for machine cabinet and communication device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105185369A (en) * | 2015-08-19 | 2015-12-23 | 哈尔滨城林科技股份有限公司 | Sound attenuating system for low-noise integrated equipment cabinet used for communication |
| CN105952272A (en) * | 2016-04-29 | 2016-09-21 | 漳州科华技术有限责任公司 | Access control system and equipment cabinet adopting same |
| CN109712374A (en) * | 2019-02-12 | 2019-05-03 | 合肥极光科技股份有限公司 | A kind of remote environment radiation monitoring alarm system |
| CN112739177A (en) * | 2021-01-21 | 2021-04-30 | 国网新疆电力有限公司信息通信公司 | Rolling door type intelligent communication screen cabinet |
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| CN201465205U (en) * | 2009-07-03 | 2010-05-12 | 深圳市永达电子股份有限公司 | Equipment cabinet device with the function of automatically short-message alarming under abnormal condition |
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| CN101634477A (en) * | 2008-07-25 | 2010-01-27 | 华为技术有限公司 | Heat exchanger and communication device |
| CN201465205U (en) * | 2009-07-03 | 2010-05-12 | 深圳市永达电子股份有限公司 | Equipment cabinet device with the function of automatically short-message alarming under abnormal condition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105185369A (en) * | 2015-08-19 | 2015-12-23 | 哈尔滨城林科技股份有限公司 | Sound attenuating system for low-noise integrated equipment cabinet used for communication |
| CN105952272A (en) * | 2016-04-29 | 2016-09-21 | 漳州科华技术有限责任公司 | Access control system and equipment cabinet adopting same |
| CN109712374A (en) * | 2019-02-12 | 2019-05-03 | 合肥极光科技股份有限公司 | A kind of remote environment radiation monitoring alarm system |
| CN112739177A (en) * | 2021-01-21 | 2021-04-30 | 国网新疆电力有限公司信息通信公司 | Rolling door type intelligent communication screen cabinet |
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Application publication date: 20120704 |