CN107834150A - A kind of parabola antenna snow removal system with intelligent water tank - Google Patents
A kind of parabola antenna snow removal system with intelligent water tank Download PDFInfo
- Publication number
- CN107834150A CN107834150A CN201711024707.6A CN201711024707A CN107834150A CN 107834150 A CN107834150 A CN 107834150A CN 201711024707 A CN201711024707 A CN 201711024707A CN 107834150 A CN107834150 A CN 107834150A
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- water
- electromagnetic valve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72415—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories for remote control of appliances
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of parabola antenna snow removal system with intelligent water tank, including entering water electromagnetic valve, water tank, level sensor, blowoff electromagnetic valve, filtering module, clear water tanks, the second level sensor, water spray module, controller, power module, mixed-media network modules mixed-media, cell phone application；The system differential mode sound and light alarm such as cell phone application display system state, network interruption, water tank lacks water, water tank full water, clear water tanks water shortage and snow removing process, management water tank, clear water tanks and snow removing；Water shortage is automatically replenished municipal tap water, send clear water tanks to be supplied water to water spray module after the filtered modular filtration of Water in Water Tank；Controller receives snow removing instruction, opens water spray module, sprays High-Pressure Water covering parabola antenna, is removed the snow；Controller timing detection clear water tanks water level value, water shortage then close water spray module and alarm；Blowoff electromagnetic valve is opened, Water in Water Tank can be discharged.The present invention ensures snow removing water water quality by cell phone application management system, water tank automatic water supplement, water tank with strainer water.
Description
Technical field
The present invention relates to parabola antenna snow-clearing technique field, is related to a kind of parabola antenna snow removing system with intelligent water tank
System.
Background technology
The transmission and reception of satellite and microwave signal typically use parabola antenna.The work of parabola antenna can be influenceed by snowing
Make efficiency, it is a necessary job to remove accumulated snow to parabola antenna.Process time length snow, it is necessary to continuously remove the snow.General spray
Water type parabola antenna snow removal system all band water tanks, but roof tank water quality situation typically will not be detected constantly, as impurity surpasses in water tank
Mark, can bring secondary pollution to parabola antenna.Therefore, it is necessary to a kind of parabola antenna snow removing system that can monitor roof tank water quality
System.
The content of the invention
It is an object of the invention to provide a kind of parabola antenna snow removal system with intelligent water tank, to solve prior art
The problem of existing.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of parabola antenna snow removal system with intelligent water tank, it is characterised in that including：Entering water electromagnetic valve, water tank, water
Level sensor, blowoff electromagnetic valve, filtering module, clear water tanks, the second level sensor, water spray module, controller, power module,
Mixed-media network modules mixed-media, cell phone application；
The entering water electromagnetic valve, one end connection municipal tap water pipe network, one end connection water tank；
The water tank, it is wedged bottom or step bottom, top connection entering water electromagnetic valve, bottom connects blowoff electromagnetic valve and mistake respectively
Filter module；
The level sensor, in water tank, measure cistern water level；
The blowoff electromagnetic valve, installed in water tank bottom, public drainage pipeline is connected, opens heel row water tank water；
The filtering module, water tank and clear water tanks are connected, water tank with strainer impurities in water, export clean water to clear water tanks；
The clear water tanks, below water tank, the clean water after stored filter, it is connected with water spray module；
Second level sensor, in clear water tanks, measure clear water tanks water level value；
The water spray module, on the outside of parabola antenna, with the section of parabola antenna axis into 0~90 degree of angle,
Spray High-Pressure Water and cover whole parabola antenna, removed the snow；
The entering water electromagnetic valve, level sensor, blowoff electromagnetic valve, filtering module, the second level sensor, water spray mould
Block, power module, mixed-media network modules mixed-media and controller signals line connect, and are controlled by the controller；
The controller, is MCU, DSP, FPGA, ARM one kind, internal memory；
The power module is civil power or solar powered, band battery, is entering water electromagnetic valve, level sensor, blowdown
Magnetic valve, filtering module, the second level sensor, water spray module, controller, mixed-media network modules mixed-media power supply；
The mixed-media network modules mixed-media, can access LAN or internet, and controller carries out network by mixed-media network modules mixed-media and cell phone application
Communication；
The cell phone application, including system state module, water tank management module, clear water tanks management module, snow removing management mould
Block；
The system state module, the network connection of detection and control device, then sound and light alarm is interrupted, receive simultaneously display control
The system status information that device is sent, differential mode sound and light alarm；The system status information, including entering water electromagnetic valve state, water level pass
Sensor state, blowoff electromagnetic valve state, the second level sensor state, water spray module status, power module state；
The water tank management module, Water in Water Tank place value is received and shown, is set on cistern water level lower limit and cistern water level
Limit value, the sound and light alarm if water tank lacks water or full water, water tank moisturizing instruction is sent to controller by mixed-media network modules mixed-media and stops mending
Water is instructed, and blowoff electromagnetic valve OPEN and blowoff electromagnetic valve out code are sent to controller by mixed-media network modules mixed-media；
The clear water tanks management module, water level value in the clear water tanks that the second level sensor measures is received and shown, is set
Clear water tanks water level lower limit, the sound and light alarm if clear water tanks water level value transfinites；
The snow removing management module, snow removing instruction is sent to controller by mixed-media network modules mixed-media and stops snow removing instruction, is received
With display snow removing process status；
The course of work of the controller is：
System electrification, each module initialization；
Timing acquisition system status information, is sent to cell phone application；
The Water in Water Tank place value of level sensor measurement is read in timing, cell phone application is sent to, such as Water in Water Tank place value<Water in Water Tank
Position lower limit, then send water tank lacks water alarm and opening entering water electromagnetic valve carries out moisturizing automatically, such as Water in Water Tank place value>Cistern water level
Higher limit, then send water tank Full water alarm and close entering water electromagnetic valve, be automatically stopped moisturizing；
Moisturizing instruction is received, entering water electromagnetic valve is opened and carries out moisturizing, such as Water in Water Tank place value>Cistern water level higher limit, then water
Case Full water alarm simultaneously closes entering water electromagnetic valve and is automatically stopped moisturizing；
Receive and stop moisturizing instruction, close entering water electromagnetic valve and stop moisturizing；
Blowoff electromagnetic valve OPEN is received, opens blowoff electromagnetic valve, discharges Water in Water Tank；
Blowoff electromagnetic valve out code is received, closes blowoff electromagnetic valve；
Clear water tanks water level value is read in timing, cell phone application is sent to, such as clear water tanks water level value<Clear water tanks water level lower limit, then
The low alarm of clear water tanks water level is sent to cell phone application；
Snow removing instruction is received, opens water spray module, the High-Pressure Water that water spray module sprays covers whole parabola antenna, entered
Row snow removing, status information during snow removing is carried out is sent to cell phone application；
Receive and stop snow removing instruction, close water spray module, snow removing halted state information is sent to cell phone application；
The course of work of the cell phone application is：
Timing detects and shows the network connection state with controller, interrupts then sound and light alarm；
Receive and system status information that display controller is sent, if any differential mode, then sound and light alarm；
Cistern water level lower limit and cistern water level higher limit are set；
Clear water tanks water level lower limit is set；
Water in Water Tank place value is received and shown, water tank lacks water or Full water alarm is received and acousto-optic represents；
Clear water tanks water level value is received and shown, the low alarm of clear water tanks water level is received and acousto-optic represents；
Send water tank moisturizing instruction to controller by mixed-media network modules mixed-media and stop moisturizing and instruct；
During snow removing, snow removing instruction is sent to controller；
When terminating snow removing, send and stop snow removing instruction to controller；
Blowoff electromagnetic valve OPEN is sent, opens blowoff electromagnetic valve, discharges Water in Water Tank；
Blowoff electromagnetic valve out code is sent, closes blowoff electromagnetic valve.
The beneficial effects of the invention are as follows：
Cell phone application display system state, network interruption, water tank lacks water, water tank full water, clear water tanks water shortage and snow removing process etc.
System differential mode sound and light alarm, management water tank, clear water tanks and snow removing；Water shortage is automatically replenished municipal tap water, the filtered mould of Water in Water Tank
Clear water tanks are sent to after block filtering to supply water to water spray module；Controller receives snow removing instruction, opens water spray module, the water under high pressure of ejection
Stream covers whole parabola antenna, is removed the snow；Controller timing detection clear water tanks water level value, water shortage then close water spray module and
Alarm；Blowoff electromagnetic valve is opened, Water in Water Tank can be discharged.The present invention passes through cell phone application management system, water tank automatic water supplement, filtering
Water in Water Tank ensures snow removing water water quality.
Brief description of the drawings
Fig. 1 is the system construction drawing of the embodiment of the present invention.
Fig. 2 is the circuit structure diagram of the embodiment of the present invention.
Fig. 3 is the cell phone application function structure chart of the embodiment of the present invention.
Embodiment
In order that technological means, creation feature, reached purpose and effect that the present invention realizes are easy to understand, below will
The invention will be further described with accompanying drawing in conjunction with the embodiments.
As shown in Figure 1, Figure 2 and Figure 3, a kind of parabola antenna snow removal system with intelligent water tank, it is characterised in that including：
Entering water electromagnetic valve 1, water tank 2, level sensor 3, blowoff electromagnetic valve 4, filtering module 5, clear water tanks 6, the second level sensor 7,
Water spray module 8, controller 9, power module 10, mixed-media network modules mixed-media 11, cell phone application 12；
The entering water electromagnetic valve 1, one end connection municipal tap water pipe network, one end connection water tank 2；
The water tank 2, it is wedged bottom or step bottom, top connection entering water electromagnetic valve 1, bottom connects blowoff electromagnetic valve 4 respectively
With filtering module 5；
The level sensor 3, in water tank 2, measure the water level of water tank 2；
The blowoff electromagnetic valve 4, installed in the bottom of water tank 2, public drainage pipeline is connected, open the water of heel row water tank 2；
The filtering module 5, water tank 2 and clear water tanks 6 are connected, water tank with strainer impurities in water, export clean water to clear water tanks
6；
The clear water tanks 6, below water tank 2, the clean water after stored filter, it is connected with water spray module 8；
Second level sensor 7, in clear water tanks 6, measure the water level value of clear water tanks 6；
The water spray module 8, on the outside of parabola antenna, with the section of parabola antenna axis into 0~90 degree of angle,
Spray High-Pressure Water and cover whole parabola antenna, removed the snow；
The entering water electromagnetic valve 1, level sensor 3, blowoff electromagnetic valve 4, filtering module 5, the second level sensor 7, spray
Water module 8, power module 10, mixed-media network modules mixed-media 11 are connected with the signal wire of controller 9, and controlled device 9 controls；
The controller 9, is MCU, DSP, FPGA, ARM one kind, internal memory；
The power module 10 is civil power or solar powered, band battery, be entering water electromagnetic valve 1, level sensor 3,
Blowoff electromagnetic valve 4, filtering module 5, the second level sensor 7, water spray module 8, controller 9, mixed-media network modules mixed-media 11 are powered；
The mixed-media network modules mixed-media 11, can access LAN or internet, controller 9 pass through mixed-media network modules mixed-media 11 and cell phone application 12
Carry out network communication；
The cell phone application 12, including system state module, water tank management module, clear water tanks management module, snow removing management mould
Block；
The system state module, the network connection of detection and control device 9, then sound and light alarm is interrupted, receives and shows control
The system status information that device 9 processed is sent, differential mode sound and light alarm；The system status information, including the state of entering water electromagnetic valve 1, water
The state of level sensor 3, the state of blowoff electromagnetic valve 4, the state of the second level sensor 7, water spray module 8 state, the shape of power module 10
State；
The water tank management module, the water level value of water tank 2 is received and shown, the water level lower limit of water tank 2 and the water level of water tank 2 are set
Higher limit, the sound and light alarm if the water shortage of water tank 2 or full water, by mixed-media network modules mixed-media 11 to controller 9 send water tank 2 moisturizing instruction and
Stop moisturizing instruction, the OPEN of blowoff electromagnetic valve 4 is sent to controller 9 by mixed-media network modules mixed-media 11 and blowoff electromagnetic valve 4 is closed
Instruction；
The clear water tanks management module, receive and show the 6 inner water level value of clear water tanks of the second level sensor 7 measurement, if
The water level lower limit of clear water tanks 6 is put, the sound and light alarm if the water level value of clear water tanks 6 transfinites；
The snow removing management module, snow removing instruction is sent to controller 9 by mixed-media network modules mixed-media 11 and stops snow removing instruction, is connect
Receive and show snow removing process status；
The course of work of the controller 9 is：
System electrification, each module initialization；
Timing acquisition system status information, it is sent to cell phone application 12；
The water level value of water tank 2 that level sensor 3 measures is read in timing, cell phone application 12 is sent to, such as the water level value of water tank 2<Water
The water level lower limit of case 2, then send the alarm of the water shortage of water tank 2 and opening entering water electromagnetic valve 1 carries out moisturizing automatically, such as the water level value of water tank 2>
The water level higher limit of water tank 2, then send the Full water alarm of water tank 2 and close entering water electromagnetic valve 1, be automatically stopped moisturizing；
Moisturizing instruction is received, entering water electromagnetic valve 1 is opened and carries out moisturizing, such as the water level value of water tank 2>The water level higher limit of water tank 2, then
The Full water alarm of water tank 2 simultaneously closes entering water electromagnetic valve 1 and is automatically stopped moisturizing；
Receive and stop moisturizing instruction, close entering water electromagnetic valve 1 and stop moisturizing；
The OPEN of blowoff electromagnetic valve 4 is received, opens blowoff electromagnetic valve 4, discharges Water in Water Tank；
The out code of blowoff electromagnetic valve 4 is received, closes blowoff electromagnetic valve 4；
The water level value of clear water tanks 6 is read in timing, cell phone application 12 is sent to, such as the water level value of clear water tanks 6<The water level lower limit of clear water tanks 6
Value, then send the low alarm of the water level of clear water tanks 6 to cell phone application 12；
Snow removing instruction is received, opens water spray module 8, the High-Pressure Water that water spray module 8 sprays covers whole parabola antenna,
Removed the snow, status information during snow removing is carried out is sent to cell phone application 12；
Receive and stop snow removing instruction, close water spray module 8, snow removing halted state information is sent to cell phone application 12；
The course of work of the cell phone application 12 is：
Timing detects and shows the network connection state with controller 9, interrupts then sound and light alarm；
Receive and system status information that display controller 9 is sent, if any differential mode, then sound and light alarm；
The water level lower limit of water tank 2 and the water level higher limit of water tank 2 are set；
The water level lower limit of clear water tanks 6 is set；
The water level value of water tank 2 is received and shown, the water shortage of water tank 2 or Full water alarm is received and acousto-optic represents；
The water level value of clear water tanks 6 is received and shown, the low alarm of the water level of clear water tanks 6 is received and acousto-optic represents；
Send the moisturizing of water tank 2 instruction to controller 9 by mixed-media network modules mixed-media 11 and stop moisturizing and instruct；
During snow removing, snow removing instruction is sent to controller 9；
When terminating snow removing, send and stop snow removing instruction to controller 9；
The OPEN of blowoff electromagnetic valve 4 is sent, opens blowoff electromagnetic valve 4, discharges Water in Water Tank；
The out code of blowoff electromagnetic valve 4 is sent, closes blowoff electromagnetic valve 4.
The display system state of cell phone application 12, network interruption, the water shortage of water tank 2, the full water of water tank 2, the water shortage of clear water tanks 6 and snow removing
The system differential mode sound and light alarm such as process, management water tank 2, clear water tanks 6 and snow removing；Water shortage is automatically replenished municipal tap water, the water of water tank 2
Filtered module 5 is sent to clear water tanks 6 and supplied water to water spray module 8 after filtering；Controller 9 receives snow removing instruction, opens water spray module
8, the High-Pressure Water of ejection covers whole parabola antenna, is removed the snow；Controller 9 regularly detects the water level value of clear water tanks 6, water shortage
Then close water spray module 8 and alarm；Blowoff electromagnetic valve 4 is opened, Water in Water Tank can be discharged.Pass through the management system of cell phone application 12, water tank
2 automatic water supplements, water tank with strainer water ensure snow removing water water quality.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to previous embodiment
Described technical scheme is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of technical scheme of the embodiment of the present invention.
Claims (1)
- A kind of 1. parabola antenna snow removal system with intelligent water tank, it is characterised in that including：Entering water electromagnetic valve, water tank, water level Sensor, blowoff electromagnetic valve, filtering module, clear water tanks, the second level sensor, water spray module, controller, power module, net Network module, cell phone application；The entering water electromagnetic valve, one end connection municipal tap water pipe network, one end connection water tank；The water tank, it is wedged bottom or step bottom, top connection entering water electromagnetic valve, bottom connects blowoff electromagnetic valve and filter module respectively Block；The level sensor, in water tank, measure cistern water level；The blowoff electromagnetic valve, installed in water tank bottom, public drainage pipeline is connected, opens heel row water tank water；The filtering module, water tank and clear water tanks are connected, water tank with strainer impurities in water, export clean water to clear water tanks；The clear water tanks, below water tank, the clean water after stored filter, it is connected with water spray module；Second level sensor, in clear water tanks, measure clear water tanks water level value；The water spray module, on the outside of parabola antenna, the section with parabola antenna axis sprays into 0~90 degree of angle High-Pressure Water covers whole parabola antenna, is removed the snow；The entering water electromagnetic valve, level sensor, blowoff electromagnetic valve, filtering module, the second level sensor, water spray module, electricity Source module, mixed-media network modules mixed-media and controller signals line connect, and are controlled by the controller；The controller, is MCU, DSP, FPGA, ARM one kind, internal memory；The power module is civil power or solar powered, band battery, is entering water electromagnetic valve, level sensor, blowdown electromagnetism Valve, filtering module, the second level sensor, water spray module, controller, mixed-media network modules mixed-media power supply；The mixed-media network modules mixed-media, can access LAN or internet, and controller carries out network with cell phone application by mixed-media network modules mixed-media and led to News；The cell phone application, including system state module, water tank management module, clear water tanks management module, snow removing management module；The system state module, the network connection of detection and control device, then sound and light alarm is interrupted, receive and display controller is sent out The system status information sent, differential mode sound and light alarm；The system status information, including entering water electromagnetic valve state, level sensor State, blowoff electromagnetic valve state, the second level sensor state, water spray module status, power module state；The water tank management module, Water in Water Tank place value is received and shown, cistern water level lower limit and cistern water level higher limit are set, The sound and light alarm if water tank lacks water or full water, water tank moisturizing instruction is sent to controller by mixed-media network modules mixed-media and stopping moisturizing referring to Order, blowoff electromagnetic valve OPEN and blowoff electromagnetic valve out code are sent to controller by mixed-media network modules mixed-media；The clear water tanks management module, water level value in the clear water tanks that the second level sensor measures is received and shown, water purification is set Case water level lower limit, the sound and light alarm if clear water tanks water level value transfinites；The snow removing management module, snow removing instruction is sent to controller by mixed-media network modules mixed-media and stops snow removing instruction, is received and aobvious Show snow removing process status；The course of work of the controller is：System electrification, each module initialization；Timing acquisition system status information, is sent to cell phone application；The Water in Water Tank place value of level sensor measurement is read in timing, cell phone application is sent to, such as Water in Water Tank place value<Under cistern water level Limit value, then send water tank lacks water alarm and opening entering water electromagnetic valve carries out moisturizing automatically, such as Water in Water Tank place value>The cistern water level upper limit Value, then send water tank Full water alarm and close entering water electromagnetic valve, be automatically stopped moisturizing；Moisturizing instruction is received, entering water electromagnetic valve is opened and carries out moisturizing, such as Water in Water Tank place value>Cistern water level higher limit, then water tank expire Water, which is alarmed and closes entering water electromagnetic valve, is automatically stopped moisturizing；Receive and stop moisturizing instruction, close entering water electromagnetic valve and stop moisturizing；Blowoff electromagnetic valve OPEN is received, opens blowoff electromagnetic valve, discharges Water in Water Tank；Blowoff electromagnetic valve out code is received, closes blowoff electromagnetic valve；Clear water tanks water level value is read in timing, cell phone application is sent to, such as clear water tanks water level value<Clear water tanks water level lower limit, then to hand Machine APP sends the low alarm of clear water tanks water level；Snow removing instruction is received, opens water spray module, the High-Pressure Water that water spray module sprays covers whole parabola antenna, removed Snow,Status information during snow removing is carried out is sent to cell phone application；Receive and stop snow removing instruction, close water spray module, snow removing halted state information is sent to cell phone application；The course of work of the cell phone application is：Timing detects and shows the network connection state with controller, interrupts then sound and light alarm；Receive and system status information that display controller is sent, if any differential mode, then sound and light alarm；Cistern water level lower limit and cistern water level higher limit are set；Clear water tanks water level lower limit is set；Water in Water Tank place value is received and shown, water tank lacks water or Full water alarm is received and acousto-optic represents；Clear water tanks water level value is received and shown, the low alarm of clear water tanks water level is received and acousto-optic represents；Send water tank moisturizing instruction to controller by mixed-media network modules mixed-media and stop moisturizing and instruct；During snow removing, snow removing instruction is sent to controller；When terminating snow removing, send and stop snow removing instruction to controller；Blowoff electromagnetic valve OPEN is sent, opens blowoff electromagnetic valve, discharges Water in Water Tank；Blowoff electromagnetic valve out code is sent, closes blowoff electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024707.6A CN107834150A (en) | 2017-10-27 | 2017-10-27 | A kind of parabola antenna snow removal system with intelligent water tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024707.6A CN107834150A (en) | 2017-10-27 | 2017-10-27 | A kind of parabola antenna snow removal system with intelligent water tank |
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| CN107834150A true CN107834150A (en) | 2018-03-23 |
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| CN201711024707.6A Pending CN107834150A (en) | 2017-10-27 | 2017-10-27 | A kind of parabola antenna snow removal system with intelligent water tank |
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| CN204329151U (en) * | 2014-10-20 | 2015-05-13 | 王米 | The storage-type solar gas heat supply heating in parallel hot water apparatus of Long-distance Control |
| CN205646095U (en) * | 2016-05-23 | 2016-10-12 | 吴艳明 | Automatic snow removal system of cubical antenna |
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2017
- 2017-10-27 CN CN201711024707.6A patent/CN107834150A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648300U (en) * | 2009-12-25 | 2010-11-24 | 马鞍山钢铁股份有限公司 | Water seal decontamination cycle device of coke furnace raiser |
| CN204329151U (en) * | 2014-10-20 | 2015-05-13 | 王米 | The storage-type solar gas heat supply heating in parallel hot water apparatus of Long-distance Control |
| CN205646095U (en) * | 2016-05-23 | 2016-10-12 | 吴艳明 | Automatic snow removal system of cubical antenna |
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| Title |
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| 薛占明 等: ""天津地球站卫星天线冲雪系统"", 《天津市电视技术研究会2016年年会论文集》 * |
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Application publication date: 20180323 |