CN102231639B - Main and backup line switching system for radio frequency adapter and transmitter and implementation method thereof - Google Patents
Main and backup line switching system for radio frequency adapter and transmitter and implementation method thereof Download PDFInfo
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- CN102231639B CN102231639B CN201110177132.8A CN201110177132A CN102231639B CN 102231639 B CN102231639 B CN 102231639B CN 201110177132 A CN201110177132 A CN 201110177132A CN 102231639 B CN102231639 B CN 102231639B
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Abstract
The invention discloses a main and backup line switching system for a radio frequency adapter and a transmitter and an implementation method thereof. Based on the characteristics of high speed and always online of the GPRS (general packet radio service) wireless communication technology and by means of a network, the switching between main and backup lines can be realized so that the equipment maintenance does not occupy the use time of users, the normal maintenance and overhaul of the equipment can be realized in the mode of switching between the main line and the backup line; a remote monitoring center monitors the parameters of each component of the system in real time through a GPRS wireless monitoring unit and sends control instructions to each component through the GPRS wireless monitoring unit so as to timely alarm and solve the problem. By the adoption of the invention, the traditionally manned patrol mode is changed, human resource is saved, and the problem that transmitters are widely distributed, mostly distributed in rural and remote areas with complicated surrounding environments and are in an unattended state can be overcome.
Description
Technical field
The present invention relates to the wireless transmitting system of DTMB single frequency network and single frequency network, specifically refer to active and standby part of switched system of radio frequency adapter and transmitter and its implementation.
Background technology
Along with on August 1st, 2007, DTMB became the pressure standard of Chinese broadcast service terrestrial television signal, for Chinese broadcast service provides all digital television system suppliers of video transfer equipment by the digital video modulation intellectual property (IP) adopting in this standard.Single frequency network scale is increasing, and the maintenance difficulties of single frequency network transmitter and workload be corresponding increase also.The active and standby switched system of transmitter intelligent, networking will become the main flow of following broadcast television emission system.
Transmitter is the important component part of DTMB single frequency network, and the reliable and stable of it is the important guarantee of the normal operation of DTMB Single Frequency Network.Various places broadcasting and TV O&M department all must strengthen the maintenance and management to transmitter, to guarantee the safety of network.There is following shortcoming in the management to transmitter of various places broadcasting and TV at present: (1) transmitter is distributed in town and country everywhere, adopts the mode of traditional manual inspection can not adapt to the demand that network develops rapidly; (2) lack professional attendant, attendant's level is uneven.Attendant cannot understand the running status of remote equipment and the phenomenon breaking down, the in time fault of remover apparatus in time; (3) because transmitter distributes wide, how in outlying district, rural area, surrounding environment complexity and unattended operation, effectively just seem particularly important to monitoring of tools, monitoring, and active and standby part of handover mechanism of traditional transmitter all do not relate to active and standby part of switching of radio frequency adapter device.
Summary of the invention
The object of the present invention is to provide active and standby part of switched system of a kind of radio frequency adapter and transmitter and its implementation, utilize the feature of " at a high speed " and " always online " that GPRS wireless communication technique has, the running parameter of Real-time Collection radio frequency adapter and transmitter and state, and reliably it is controlled in time.
Object of the present invention is achieved through the following technical solutions:
Active and standby part of switched system of radio frequency adapter and transmitter, comprise identical two complete equipments, the two backups each other, every complete equipment includes the radio frequency adapter and the transmitter that connect successively, radio frequency adapter receiving optical signals is also converted into the signal of telecommunication, exports transmitter to after adding time delay, and transmitter is by after the signal of telecommunication computing after time delay, be sent to transmitting antenna by radio-frequency (RF) coaxial diverter switch, by transmitting antenna, this signal sent; Also comprise remote monitoring center, GPRS wireless monitor unit and switch, transmitter gathers the operational factor of radio frequency adapter and transmitter and transfers to switch, and switch is sent to remote monitoring center by operational factor by GPRS wireless monitor unit; Remote monitoring center sends work order by GPRS wireless monitor unit to transmitter, coaxial radio-frequency diverter switch according to the operational factor receiving, and coaxial radio-frequency diverter switch makes main equipment and transmitting antenna or the alternate device in normal operating conditions and the transmitting antenna maintenance channel status in normal operating conditions.Native system is realized radio frequency adapter and transmitter active and standby part and is switched taking radio-frequency (RF) coaxial switch and controlled AC/DC power supply as core, taking GPRS wireless monitor unit as core, ensure local TCP/IP management and long-range GPRS management by switch, realize the monitoring of remote monitoring center to native system, by the scientific management of intellectuality, digitlization, networking, ensureing under safe broadcast prerequisite, strengthen dispatch control ability, effectively increase work efficiency and managerial skills, alleviate working strength and reduce people for liability accident, reduce operating cost; Simultaneously, by computer management, farthest reduce human factor impact, improve the ageing of the accuracy of reliability, data processing of transmitter work and accident treatment, remote monitoring center passes through with many stations, multimachine room is the integrated service managerial grid of core, realizes working condition monitoring, Realtime Alerts demonstration, datamation to station devices.
Described radio frequency adapter comprises the Optical Receivers, adjustable attenuator, the radio-frequency delayer that connect successively, Optical Receivers receives fiber-optic signal and is converted into the signal of telecommunication, the signal of telecommunication is decayed in adjustable attenuator, filtering regulate after, in radio-frequency delayer, add time delay; Also being included as Optical Receivers, adjustable attenuator, radio-frequency delayer provides the AC/DC power supply of power supply.
Described transmitter comprises radio frequency amplification system, feed system and monitoring mainboard, radio frequency amplification system is made up of the level controller connecting successively, preamplifier, final amplifier and circulator, wherein, level controller is connected with radio frequency adapter, and final amplifier output signal connects radio-frequency (RF) coaxial diverter switch by circulator and is sent to transmitting antenna; Feed system comprises that three are controlled by three power supply AC/DC1, the AC/DC2, the AC/DC3 that monitor mainboard, and AC/DC1 provides power supply to level controller and preamplifier, and AC/DC2 provides power supply, AC/DC3 to provide power supply to monitoring mainboard to final amplifier; Monitoring mainboard gathers transmitter and the current operational factor of radio frequency adapter, and sends to local TCP/IP webmaster or GPRS wireless monitor unit by switch, carries out the operational order that GPRS wireless monitor unit issues by switch simultaneously.
Described GPRS wireless monitor unit comprises switching mainboard and GPRS DTU, switch mainboard the trip information of the transmitter in normal operating conditions and radio frequency adapter is sent to GPRS DTU, and receive the operational order that GPRS DTU issues, be handed down to radio-frequency (RF) coaxial diverter switch and main standby system; GPRS DTU initial landing GSM network, then carry out GPRS PPP dialing, GPRS DTU is by IP address and the port numbers of data center, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then keeps this communication connection to exist always, if communication connection is interrupted, GPRS DTU shakes hands again with data center immediately.
The implementation method of active and standby part of switched system of radio frequency adapter and transmitter, comprises the following steps:
(A) radio frequency adapter receives fiber-optic signal, and is changed into radiofrequency signal, and adds time delay;
(B) transmitter, by the signal of step (A) output after amplifying, transfers to transmitting antenna by radio-frequency (RF) coaxial diverter switch, outwards transmitting;
(C) transmitter of active and standby part and the operational factor of radio frequency adapter are sent to GPRS DTU by GPRS wireless monitor unit, and extract the operational order of GPRS DTU transmission, be handed down to radio-frequency (RF) coaxial diverter switch, main auxiliary transmitter and radio frequency adapter, simultaneously, GPRS DTU logs in GSM network, then carry out GPRS PPP dialing, GPRS DTU is by IP address and the port numbers of data center, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then keep this communication connection to exist always, if communication connection is interrupted, GPRS DTU shakes hands again with center immediately,
(D) instruction that the local TCP/IP webmaster that GPRS monitoring unit basis receives or remote monitoring center issue, first close transmitter, the radio frequency adapter of operating state, then switch the operating state of coaxial trigger, finally open transmitter, the radio frequency adapter of backup, thereby make to only have a circuit to be communicated with transmitting antenna in main line and spare wire, and another road disconnects.
Further, described step (D) comprises the following steps:
(D1) when system boot, by the processing of amplifier, ensure that main road is logical, standby road is disconnected, after supervisory control system initialization, is controlled transmitter and the AC/DC power supply of radio frequency adapter by monitoring program;
(D2) transmitting order to lower levels is responsible in GPRS wireless monitor unit, control by the monitoring mainboard specific implementation in transmitter to transmitter and radio frequency adapter power supply, monitoring mainboard in transmitter is exported respectively 3 tunnels to the AC/DC power supply of transmitter and radio frequency adapter and is controlled voltage Vpc1, Vpc2 and Vpc3, Vpc1, Vpc2 and Vpc3 be low level while being 0V AC/DC power supply open, Vpc1, Vpc2 and Vpc3 be high level while being 12V AC/DC power supply close;
(D3) GPRS wireless monitor unit provides a switch method of remote signal voltage Vsc to radio-frequency (RF) coaxial diverter switch, switch method of remote signal voltage Vsc is that high level is while being 12V, coaxial switch TX1 road is communicated with, TX2 road disconnects, switch method of remote signal voltage Vsc is that low level is while being 0V, coaxial switch TX1 road disconnects, and TX2 road is communicated with;
(D4) switching on and shutting down of transmitter order is as follows:
Shutdown order: first turn-off AC/DC1 power supply, then turn-off AC/DC2 and control voltage, every step time delay 1 second; Power-up sequence: first open AC/DC1 power supply, then open AC/DC2 and control voltage, every step time delay 1 second; Transfer sequence: first close the transmitter of work, then switch coaxial switch, finally open standby host.
Further, described step (D3) comprises the following steps:
(D31) in the case of the switching mainboard of GPRS wireless monitor unit damages, must ensure that in the TX1 of radio-frequency (RF) coaxial diverter switch and TX2, only having the power supply control voltage of 1 transmitter is that low level is 0V, and radio-frequency (RF) coaxial diverter switch on this transmitter one tunnel for opening, another Lu Weiguan;
(D32)
cancarry out manual switchover and automatic switchover, manual switchover has precedence over automatic switchover;
(D33) automatically switch as selected, GPRS wireless monitor unit automatically switches when abnormal at TX1 or TX2 Monitoring Data.
The present invention compared with prior art, has following advantage and beneficial effect:
1. single frequency network adaptation of the present invention and active and standby part of switched system of transmitter, the switching mode between main preparation system, makes the maintenance of equipment can not occupy user's service time, and the mode of switching by main standby system, realizes conventional maintenance, the maintenance of equipment;
2. single frequency network adaptation of the present invention and active and standby part of switched system of transmitter, remote monitoring center is by the parameter at each position of real-time monitoring system, GPRS wireless monitor unit, and send manipulation instruction by GPRS wireless monitor unit to all parts, problem of implementation and alarm and solution, change traditional manual inspection mode, saved human resources, overcome simultaneously wireless transmitting device distribute wide and how in outlying district, rural area, the complicated and unattended problem of surrounding environment;
3. single frequency network adaptation of the present invention and active and standby part of switched system of transmitter, utilize the feature of " at a high speed " and " always online " that GPRS wireless communication technique has, running parameter and the state of the same net adapting appts frequently of Real-time Collection and wireless transmitting device, and realize reliably the monitoring of remote monitoring center to native system in time;
4. single frequency network adaptation of the present invention and active and standby part of switched system of transmitter, adopt GPRS wireless monitor unit bidirectional transmission system, remote monitoring center and home server all can oppositely be realized the time adjustment to native system, status report, switch and other monitorings, the functions such as control, there is good real-time response and disposal ability, with Short Message Service comparison, because GPRS has real-time online characteristic, system is without time delay, system can be collected simultaneously in real time, process the various data of multiple/all monitoring points, just can the multiple equipment of Simultaneous Monitoring without taking turn, can well meet the requirement of system to data acquisition and transmission real-time,
5. single frequency network adaptation of the present invention and active and standby part of switched system of transmitter, can make full use of existing GSM network, and equipment installation cost is low, utilize existing ripe GSM network, when system puts into operation, substantially do not need debugging, install simple and direct, debugging is simple, and the construction period is short; Build supervisory control system and require data communication wide coverage, dilatation is unrestricted, and access place is unrestricted, can meet mountain area, small towns and trans-regional access demand; Message transmission rate is high, and GPRS network transfer rate can reach 171.2kbps, and when practical application, message transmission rate is in 40Kbps left and right; The transmission capacity of system is large, monitoring central station will realize and being connected in real time with each Supervisory control point, due to Supervisory control point One's name is legion, system requirements can meet the needs of burst data transmission, and GPRS technology can meet the needs of transmission burst data well; Communication cost is low.Due to the mode of GPRS employing monthly payment charging, operation maintenance cost is low; The Hot Spare of transmitter and radio frequency adapter, ensures system stability work.
Brief description of the drawings
Fig. 1 is system configuration of the present invention and signal flow schematic diagram.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, active and standby part of switched system of radio frequency adapter of the present invention and transmitter, comprise identical two complete equipments, the two backups each other, every complete equipment includes the radio frequency adapter and the transmitter that connect successively, radio frequency adapter comprises the Optical Receivers, adjustable attenuator, the radio-frequency delayer that connect successively, also comprises AC/DC power supply, is used to Optical Receivers, adjustable attenuator, radio-frequency delayer that power supply is provided; Transmitter comprises successively the level controller, preamplifier, final amplifier, the circulator that connect, and being also included as level controller, preamplifier, final amplifier, circulator provides the feed system of power supply, and monitoring mainboard; Also comprise GPRS wireless monitor unit, radio-frequency (RF) coaxial diverter switch, switch, remote monitoring center and transmitting antenna, switch is connected with GPRS wireless monitor unit, transmitter, remote monitoring center is connected with transmitter with switch by GPRS wireless monitor unit, and radio-frequency (RF) coaxial switching was opened pass, GPRS wireless monitor unit and is controlled by remote monitoring center.Described radio frequency adapter, for the light signal of input is converted to the signal of telecommunication, and adds suitable time delay, accepts the policer operation of the supervisory control system of transmitter simultaneously; Transmitter, for the collection of the supplemental characteristic to radio frequency adapter and operating state, and carries out the command adapted thereto of the remote monitoring center that receives by GPRS wireless monitor unit; Also comprise GPRS wireless monitor unit, as data channel, for the transfer of data between transmitter and remote monitoring center; Radio-frequency (RF) coaxial diverter switch, the command adapted thereto of carrying out according to transmitter switches the break-make of main line or spare line; Switch, for connecting GPRS wireless monitor unit and transmitter, to the control command of transmitter transmission remote monitoring center; Remote monitoring center, comprise GPRS remote monitoring and local TCP/IP supervisory control system, by the operational factor of GPRS wireless monitor unit monitors radio frequency adapter and transmitter, and send instruction by GPRS wireless monitor unit to radio frequency adapter and transmitter; Transmitting antenna, sends for the signal of be channel status by radio-frequency (RF) coaxial diverter switch main line or spare wire.Described transmitter comprises monitoring mainboard, gathers transmitter parameter current, and sends to local TCP/IP webmaster or GPRS wireless monitor unit by TCP/IP, and carry out the operational order that GPRS wireless monitor unit issues by TCP/IP for being responsible for; Radio frequency amplification system, is made up of the level controller connecting successively, preamplifier, final amplifier and circulator, for the signal of telecommunication of radio frequency adapter is amplified and processed, and by being sent to transmitting antenna to radio-frequency (RF) coaxial diverter switch; Feed system, comprises that three are controlled by three power supplys monitoring mainboard, and three power supplys provide power supply to level controller and preamplifier, final amplifier and monitoring mainboard respectively.Described GPRS wireless monitor unit comprises switching mainboard and GPRS DTU, the parameter information of active and standby transmitter and adapting appts is sent to GPRS DTU by described switching mainboard, and extract the operational order of GPRS DTU transmission by serial ports, be handed down to the controllable electric power of radio-frequency delayer, transmitter; Described GPRS DTU logs in GSM network, then carry out GPRS PPP dialing, GPRS DTU is by the parameter such as IP address and port numbers of data center, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then just keeps this communication connection to exist always, if communication connection is interrupted, GPRS DTU will shake hands with center immediately again.
After GPRS DTU powers on, first read the running parameter of preserving in inner FLASH, draw together GPRS dialing parameters, serial ports baud rate, the IP of data center address etc., configures in advance, switches mainboard and is responsible for the parameter information of active and standby transmitter and adapting appts to send to GPRS DTU, and extract the operational order of GPRS DTU transmission by serial ports, be handed down to each equipment.
GPRS DTU logs in GSM network, then carry out GPRS PPP dialing, after dial-up success, GPRS DTU will obtain an implicit IP address being distributed by movable random, that is to say, GPRS DTU is in mobile Intranet, and its IP address of internal network is normally unfixed, change along with each dialing, GPRS DTU is now the equipment in mobile internal lan, realize and the communicating by letter of exterior I nternet public network by mobile gateway, this is similar to the mode that the computer expert in local area network (LAN) crosses gateway access external network.
GPRS DTU initiatively initiates the communication connection with data center, and keep communication connection to exist always, because GPRS DTU is in mobile Intranet, and IP address is unfixing, therefore, can only be by initiatively connection data center of GPRS DTU, and can not initiatively connect GPRS DTU by data center, this just requires data center to possess fixing public network IP address or fixing domain name, the public network IP address of data center or fixing domain name as Parameter storage in GPRS DTU, once the dial-up success so that GPRS DTU powers on, just can initiatively be connected to data center.
Specifically, GPRS DTU is by the IP address of data center, if the words of the center of employing domain name, first go out IP address, center by central field name analysis, and the parameter such as port numbers, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then just keep this communication connection to exist, if communication connection is interrupted, GPRS DTU will shake hands with center immediately again always, because TCP/UDP communication connection is set up, just can carry out data double-way and communicate by letter.
For GPRS DTU, as long as set up the two-way communication with data center, completing user serial data is just relative simple with the conversion of GPRS network packet, once receive user's serial data, GPRS DTU is just encapsulated in serial data in a TCP/UDP bag immediately, sends to data center; Otherwise, in the time that GPRS DTU receives the TCP/UDP bag that data center sends, therefrom take out data content, send to subscriber equipment by serial ports immediately.
The implementation method of active and standby part of switched system of radio frequency adapter and transmitter, comprises the following steps:
(A) radio frequency adapter receives fiber-optic signal, and is changed into the signal of telecommunication, and adds time delay;
(B) transmitter, by the signal of telecommunication of step (A) output after amplifying, transfers to transmitting antenna by radio-frequency (RF) coaxial diverter switch, outwards transmitting;
(C) operational factor of the transmitter of main line and spare wire and radio frequency adapter is sent to GPRS DTU by GPRS wireless monitor unit, and extract the operational order of GPRS DTU transmission, being handed down to radio-frequency (RF) coaxial switching opens, the transmitter of main line and spare wire and radio frequency adapter, simultaneously, GPRS DTU logs in GSM network, then carry out GPRS PPP dialing, GPRS DTU is by IP address and the port numbers parameter of data center, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then keep this communication connection to exist always, if communication connection is interrupted, GPRS DTU will shake hands with center immediately again,
(D) instruction that radio-frequency (RF) coaxial diverter switch issues according to the remote monitoring center receiving, opens transmitter, radio frequency adapter in closed condition, closes transmitter, radio frequency adapter in channel status; Meanwhile, switch the operating state of main line and spare wire, make to only have a circuit to be communicated with transmitting antenna in main line and spare wire, and another road disconnects;
(D1) monitoring mainboard is according to the AC/DC1 power supply direct current output of instruction control level controller, and low level is that DC normally exports, and high level is that DC output is turn-offed;
(D2) TX1 and the TX2 of GPRS wireless monitor unit to radio frequency coaxial trigger exports respectively 2 power supply control voltage Vpc1 and Vpc2, Vpc1 and Vpc2 be low level while being 0V power supply open, Vpc1 and Vpc2 be high level while being 12V power supply close, the switching on and shutting down order of transmitter is as follows:
Shutdown order: first turn-off AC/DC1 power supply, then turn-off AC/DC2 and control voltage, every step time delay 1 second;
Power-up sequence: first open AC/DC2 power supply, then open AC/DC1 and control voltage, every step time delay 1 second;
(D3) GPRS wireless monitor unit provides a switch method of remote signal voltage Vsc to radio-frequency (RF) coaxial diverter switch, switch method of remote signal voltage Vsc is that high level is while being 12V, coaxial switch TX1 road is logical, close on TX2 road, switch method of remote signal voltage Vsc is that low level is while being 0V, close on coaxial switch TX1 road, and TX2 opens on road;
(D31) in the case of the switching mainboard of GPRS wireless monitor unit damages, must ensure that in the TX1 of radio-frequency (RF) coaxial diverter switch and TX2, only having the power supply control voltage of 1 transmitter is that low level is 0V, and radio-frequency (RF) coaxial diverter switch on this transmitter one tunnel for opening, another Lu Weiguan;
(D32)
cancarry out manual switchover and automatic switchover, manual switchover has precedence over automatic switchover;
(D33) automatically switch as selected, GPRS wireless monitor unit automatically switches when abnormal at TX1 or TX2 Monitoring Data.
Native system is realized radio frequency adapter and transmitter active and standby part and is switched taking radio-frequency (RF) coaxial switch and controlled AC/DC power supply as core, taking GPRS wireless monitor unit as core, ensure local TCP/IP management and long-range GPRS management by switch, realize the monitoring of remote monitoring center to native system, by the scientific management of intellectuality, digitlization, networking, ensureing under safe broadcast prerequisite, strengthen dispatch control ability, effectively increase work efficiency and managerial skills, alleviate working strength and reduce people for liability accident, reduce operating cost; Simultaneously, by computer management, farthest reduce human factor impact, improve the ageing of the accuracy of reliability, data processing of transmitter work and accident treatment, remote monitoring center passes through with many stations, multimachine room is the integrated service managerial grid of core, realizes working condition monitoring, Realtime Alerts demonstration, datamation to station devices.Native system carries out sending instructions and realizing the monitoring to transmitter under real-time data collection and execution in time to transmitter by monitoring mainboard, remote monitoring center is realized data with GPRS wireless monitor unit and home server by switch and is passed mutually simultaneously, GPRS DTU in GPRS monitoring unit packs the data to transparent data and is connected to remote monitoring center GPRS Communications service end by Internet net, realize the wireless transmission of data, the monitoring management system of remote monitoring center is realized the parameter of transmitter is browsed, the functions such as intelligent control, remote monitoring center is realized intercommunication by network and local network management simultaneously.
As mentioned above, just can realize well the present invention.
Claims (3)
1. the implementation method of active and standby part of switched system of radio frequency adapter and transmitter, is characterized in that: comprise the following steps:
(A) radio frequency adapter receives fiber-optic signal, and is changed into radiofrequency signal, and adds time delay;
(B) transmitter, by the signal of step (A) output after amplifying, transfers to transmitting antenna by radio-frequency (RF) coaxial diverter switch, outwards transmitting;
(C) transmitter of active and standby part and the operational factor of radio frequency adapter are sent to GPRS DTU by GPRS wireless monitor unit, and extract the operational order of GPRS DTU transmission, be handed down to radio-frequency (RF) coaxial diverter switch, main auxiliary transmitter and radio frequency adapter, simultaneously, GPRS DTU logs in GSM network, then carry out GPRS PPP dialing, GPRS DTU is by IP address and the port numbers of data center, initiate TCP or UDP communication request to data center, after the response that obtains center, GPRS DTU thinks and shakes hands successfully with center, then keep this communication connection to exist always, if communication connection is interrupted, GPRS DTU shakes hands again with center immediately,
(D) instruction that the local TCP/IP webmaster that GPRS monitoring unit basis receives or remote monitoring center issue, first close transmitter, the radio frequency adapter of operating state, then switch the operating state of coaxial trigger, finally open transmitter, the radio frequency adapter of backup, thereby make to only have a circuit to be communicated with transmitting antenna in main line and spare wire, and another road disconnects.
2. the implementation method of active and standby part of switched system of radio frequency adapter according to claim 1 and transmitter, is characterized in that: described step (D) comprises the following steps:
(D1) when system boot, by the processing of amplifier, ensure that main road is logical, standby road is disconnected, after supervisory control system initialization, is controlled transmitter and the AC/DC power supply of radio frequency adapter by monitoring program;
(D2) transmitting order to lower levels is responsible in GPRS wireless monitor unit, control by the monitoring mainboard specific implementation in transmitter to transmitter and radio frequency adapter power supply, monitoring mainboard in transmitter is exported respectively 3 tunnels to the AC/DC power supply of transmitter and radio frequency adapter and is controlled voltage Vpc1, Vpc2 and Vpc3, Vpc1, Vpc2 and Vpc3 be low level while being 0V AC/DC power supply open, Vpc1, Vpc2 and Vpc3 be high level while being 12V AC/DC power supply close;
(D3) GPRS wireless monitor unit provides a switch method of remote signal voltage Vsc to radio-frequency (RF) coaxial diverter switch, switch method of remote signal voltage Vsc is that high level is while being 12V, coaxial switch TX1 road is communicated with, TX2 road disconnects, switch method of remote signal voltage Vsc is that low level is while being 0V, coaxial switch TX1 road disconnects, and TX2 road is communicated with;
(D4) switching on and shutting down of transmitter order and transfer sequence are as follows:
Shutdown order: first turn-off AC/DC1 power supply, then turn-off AC/DC2 and control voltage, every step time delay 1 second; Power-up sequence: first open AC/DC1 power supply, then open AC/DC2 and control voltage, every step time delay 1 second; Transfer sequence: first close the transmitter of work, then switch coaxial switch, finally open standby host.
3. the implementation method of active and standby part of switched system of radio frequency adapter according to claim 2 and transmitter, is characterized in that: described step (D3) comprises the following steps:
(D31) in the case of the switching mainboard of GPRS wireless monitor unit damages, must ensure that in the TX1 of radio-frequency (RF) coaxial diverter switch and TX2, only having the power supply control voltage of 1 transmitter is that low level is 0V, and radio-frequency (RF) coaxial diverter switch on this transmitter one tunnel for opening, another Lu Weiguan;
(D32)
cancarry out manual switchover and automatic switchover, manual switchover has precedence over automatic switchover;
(D33) automatically switch as selected, GPRS wireless monitor unit automatically switches when abnormal at TX1 or TX2 Monitoring Data.
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| CN201110177132.8A CN102231639B (en) | 2011-06-28 | 2011-06-28 | Main and backup line switching system for radio frequency adapter and transmitter and implementation method thereof |
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| CN103686160B (en) * | 2014-01-02 | 2015-08-05 | 成都新光微波工程有限责任公司 | Universal digital television emission intelligent monitoring switched system and changing method |
| CN104660328B (en) * | 2015-03-11 | 2018-11-02 | 深圳市新岸通讯技术有限公司 | The long-distance management system and method for remote management of optical fiber multiplexing equipment |
| CN105871488A (en) * | 2016-04-28 | 2016-08-17 | 阿不力孜·牙生 | Method and system for monitoring transmitter broadcast state and giving alarm against abnormity |
| CN113067684B (en) * | 2021-03-18 | 2022-06-24 | 四川九洲空管科技有限责任公司 | Transmitter dual-machine switching system and method of Doppler very high frequency omnidirectional beacon |
| CN116800283B (en) * | 2023-08-16 | 2024-05-24 | 成都德芯数字科技股份有限公司 | N+1 switching transmitting system and information monitoring method thereof |
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| CN101990840A (en) * | 2009-08-19 | 2011-03-30 | 遵义群建塑胶制品有限公司 | Remote automatic control method and system of water-saving irrigation system |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430313A (en) * | 2008-12-10 | 2009-05-13 | 无锡彩丰科技有限公司 | Water quality monitoring system based on global positioning system and universal grouping wireless service |
| CN201307330Y (en) * | 2008-12-12 | 2009-09-09 | 吉林建筑工程学院 | Intelligent community remote meter reading system based on CAN bus technology and GPRS technology |
| CN101990840A (en) * | 2009-08-19 | 2011-03-30 | 遵义群建塑胶制品有限公司 | Remote automatic control method and system of water-saving irrigation system |
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