CN203224727U - Dual-clock source time service system based on radio communication network and GPS - Google Patents
Dual-clock source time service system based on radio communication network and GPS Download PDFInfo
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- CN203224727U CN203224727U CN 201320206173 CN201320206173U CN203224727U CN 203224727 U CN203224727 U CN 203224727U CN 201320206173 CN201320206173 CN 201320206173 CN 201320206173 U CN201320206173 U CN 201320206173U CN 203224727 U CN203224727 U CN 203224727U
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Abstract
The utility model relates to a dual-clock source time service system based on the wireless communication network and GPS. A host is in signal connection with a GPS time service machine through a wireless receiver. The host is in signal connection with sub-machines by a wireless emitter. The host is provided with a standby clock source of DS12C887. A controller of the host is connected to the Internet through an Internet gateway. The dual-clock time service system employs the wireless communication network and the GPS and control a perpetual calendar and a bell-ringing instrument. The time service is achieved by transmitting satellite time signals picked up by the host to subsystems through the wireless communication network. In order to improve reliability of the time service system, DS12C887 is designed as a standby clock source for the host for emergency use. The host is connected to the Internet through the Internet gateway to realize remote control and network time service. The objects of the time service are a perpetual calendar and a bell-ringing instrument. The accuracy of the time service is nanosecond. In states of blackout, restart and others, manual setting time is not required. Furthermore, the time service system is free of debugging and maintenance, thereby achieving unattended operation.
Description
Technical field
The utility model belongs to the time dissemination system technical field, relates to a kind of doubleclocking source time dissemination system based on wireless communication networks and GPS that sends to all subsystems realization time services by wireless communication networks and GPS.
Background technology
Perpetual calendar is timing device common in the daily life, and Belling apparatus is school, factories and miness number commandant's equipment commonly used, and this difference is all relevant with clock.In the reality, no matter be year calendar or Belling apparatus, its clock source adopts quartz oscillator to produce 1 second time-base signal mostly, and this is constantly accumulated timing, realizes clock and function regularly.Quartz crystal is core parts in the oscillatory circuit, be subjected to the influence of working temperature, manufacturing process, its precision is limited, degree of stability also changes with the variation of working time, working environment, therefore the timing error of traditional clock every day is the several seconds, month timing error is several minutes, therefore every month or when the several months need be carried out manual school.Needed newly to arrange the time one time after outage back or internal battery lose efficacy in addition.When there are a lot of time perpetual calendars, Belling apparatus in a unit, for guaranteeing its reliable operation, needing to drop into the special messenger safeguards, workload is big, if the maintainer fails timely discovering device and has to walk time error, even or find that also can't rush towards the scene immediately safeguards (during the school), thereby then can not normally use normal work to be affected because of perpetual calendar and Belling apparatus.And this thing often has generation in units such as schools.
The utility model content
In order to overcome the above-mentioned shortcoming of prior art
,It is a kind of by wireless communication networks and GPS control perpetual calendar and Belling apparatus that the utility model provides, and has adjustment conveniently and the doubleclocking source time dissemination system based on wireless communication networks and GPS of punctual timing characteristics.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of doubleclocking source time dissemination system based on wireless communication networks and GPS, comprise GPS time service machine, main frame, handset and sensor, main frame connects with GPS time service machine signal by radio receiver, main frame connects with all handset signal by wireless launcher, main frame is provided with the standby clock source of DS12C887, and the controller of main frame inserts the internet by the Internet gateway.
Described DS12C887 has clock, lithium battery and charging circuit.
The GPS receiver of described GPS time service machine places high outdoor of receiving sensitivity, and the GPS receiver connects with solar photovoltaic powered device circuit.
Described GPS receiver has GPS receiver module, CPU and wireless transceiver, and the GPS module is extracted the required time of GPS time service and the CPU of year, month, day data connects with the console controller signal by wireless transceiver.
The single-chip microcomputer that the CPU of described GPS receiver is to use MPPT maximum power point tracking technology to programme.
Described main frame has USB and/or Ethernet interface, the controller of main frame is the STM32 microprocessor, and be provided with the human-machine operation interactive interface that TFT liquid crystal display and four buttons are formed, the physical link layer of Ethernet is ENC28J60 Ethernet interface chip, and the STM32 microprocessor connects by operation ICP/IP protocol and Internet network chain.
Be provided with different communication channels between main frame and GPS time service machine and the handset, the GPS receiver connects with main-machine communication by channel 0, and main frame is by the broadcast channel connection of communicating by letter with handset.
Good effect of the present utility model is: adopt the doubleclocking source time dissemination system of wireless communication networks and GPS, control perpetual calendar and Belling apparatus extract the gps satellite time signal by main frame, send to all subsystems by wireless communication networks and realize time service; For improving system reliability, design DS12C887 is main frame standby clock source, prepare against when meeting an urgent need and use, main frame inserts the internet by the Internet gateway, realization Long-distance Control and network time service, the time service object is perpetual calendar and Belling apparatus, time service precision is nanosecond, the outage, restart or other situations under also need not the manual setting time, system exempt from the debugging, almost Maintenance free is realized unmanned.
Description of drawings
Fig. 1 is block diagram of the present utility model.
Fig. 2 is GPS receiver principle figure of the present utility model.
Fig. 3 is host hardware circuit theory diagrams of the present utility model.
Fig. 4 is communication protocol collection definition list of the present utility model.
Fig. 5 is node communication routine block scheme of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further specified.
A kind of doubleclocking source time dissemination system based on wireless communication networks and GPS, control perpetual calendar and Belling apparatus.Extract the gps satellite time signal by main frame, send to all subsystems by wireless communication networks and realize time service, for improving system reliability, design DS12C887 is main frame standby clock source, prepare against when meeting an urgent need and use, main frame inserts the internet by the Internet gateway, realizes Long-distance Control and network time service.The time service object is perpetual calendar and Belling apparatus, and time service precision is nanosecond, outage, restart or other situation under also need not the manual setting time, system exempts from debugging, Maintenance free is almost realized unmanned.
As shown in Figure 1, it has GPS time service machine, main frame, handset and sensor, system uses cordless communication network to communicate, the controller design of main frame has the Internet gateway interface, so that the Telnet of computing machine and intelligent terminal and control, for improving the receiving sensitivity of gps satellite signal, enlarge usable range, place the GPS receiver in the GPS time service machine outdoor, GPS receiver receiving satellite signal and extract temporal information after send time signal by cordless communication network to console controller, send to the handset unit by cordless communication network again after the time service information that console controller places indoor host computer to receive converts Beijing time to.
The GPS receiver comprises GPS receiver module, CPU and wireless transceiver, and CPU extracts data such as required time of GPS time service, year, month, day from the GPS module, and it is crossed the controller that wireless transceiver is given main frame.The GPS receiver places high outdoor of receiving sensitivity, and uses solar photovoltaic powered; GPS receiver hardware as shown in Figure 2, its built-in single-chip microcomputer nuclear core control assembly; Be to improve solar cell power generation efficient, use MPPT maximum power point tracking technology, by to mcu programming, any time solar cell be positioned at recommended current and optimum operating voltage position, Maximum Power Output.
The design of the controller of main frame: GPS time service machine by wireless mode to the main frame transmission time information, main frame sends to all handsets by wireless mode after receiving again, realization is to the GPS time service of handset, for improving system stability and reliability, main frame is provided with DS12C887 standby clock source, uses in order to emergent as the second clock source, and DS12C887 integrates clock, lithium battery, charging circuit, information can keep 10 years, was RTC clock chip commonly used in a kind of industry; Main frame is also being calibrated the DS12C887 clock simultaneously when other handset sends the GPS time signal, when main frame and GPS receiver were out of touch, main frame was enabled the second clock source of DS12C887 to the handset time service; Main frame has electric bell control function concurrently, and daily schedule is stored in the main frame in advance, and main frame is compared daily schedule in real time, if timing is controlled its jingle bell to then sending the jingle bell control signal to the Belling apparatus handset; For realizing unmanned, preserved the daily schedule of Various Seasonal in the main frame, automatically switch according to setting the date.In addition, main frame can also send " prohibit and ring " instruction to Belling apparatus, makes the electric bell of some specific position or " prohibits sound " at particular time, can operate as normal after handset receives " lifting a ban " instruction.The host hardware circuit theory diagrams use the STM32 microprocessor to make controller as shown in Figure 3, and the human-machine operation interactive interface of being made up of TFT liquid crystal display and four buttons.Main frame has interfaces such as USB, Ethernet, and the physical link layer of Ethernet is realized that by ENC28J60 Ethernet interface chip CPU operation ICP/IP protocol stack can be linked to the Internet net, in order to realize computing machine or intelligent terminal Long-distance Control and internet time service.Can realize the data message of main frame inside is upgraded by USB interface.
The design of wireless communication networks software: with the physical link media of CC1101 composition cordless communication network, the networking mode that adopts frequency division multiplexing to combine with code division multiplexing carries out group-net communication by the protocol instructions collection.For avoiding the channel conflict, adopt the different communication channel between main frame and GPS time service machine and the handset, for improving system reliability, main frame is monitored the handset duty in real time, main frame sends querying command to handset one by one, and handset receives and checks whether the ID address is mated and sent answer signal to main frame after the order; Agreement by agreement after system powers on links and networking automatically, and the variety of protocol order as shown in Figure 4.Fig. 4 has defined short agreement and 63 byte long agreements of 7 bytes.Short protocol contents is few, and propagation delay time is little, mainly uses real-time time service and control, long agreement be mainly used in and Belling apparatus between batch data transmit.
Broadcasting time service command word is 00H～03H, and totally 4 instructions represent 4 kinds of different states of GPS receiver respectively: the synchronous time service of 00H GPS, 01H represents that GPS takes defeat, 02H represents the GPS equipment failure, and 03H represents that the GPS time service is unsuccessful, uses local DS12C887 time service instead.Querying command is the instruction that main frame sends to slave, and the handset of matching addresses receives will send answer signal to main frame.Querying command and acknowledgement command only use 2 bytes, and remaining field is filled AAH and 55H.It is 07H that order is set, and is mainly used in the communication channel parameters setting, and control command is used for control in real time, and 5 functions of definable are as controlling handset switching on and shutting down etc.Data transfer command is used for the daily schedule data transmission, 4 instructions are arranged, expression different seasons in summer, season in autumn, standby seasonal 1, standby seasonal 2 respectively, the subpackage transmission of bag ID during as mass data, be to represent to have only a bag at 0 o'clock, represent last bag during for FFH.
Communication process as shown in Figure 5 during system works, the GPS receiver uses channel 0(CH0) and main-machine communication, main frame uses broadcast channel (CH1) to communicate by letter with handset, all handset starts are waited at the CH1 channel and are waited for that main frame sends signal or order, main frame sends the time service data by CH1 to all handsets, and sending gap periods is 300 seconds.Main frame per hour once checks handset, calls out by the CH1 broadcast channel and specifies handset, sends answer signal to main frame after handset receives and finishes the handset checking process.All handset inspections aft engine that finishes switches to CH2 channel monitoring sensor signal.If can't receiving the answer signal of handset, main frame will provide information at liquid crystal display.Handset can be carried out wireless connections with sensors such as infrared, microwaves, CH5 is the sensor-specific channel, handset automatically switches to the CH5 receiving sensor and sends signal when idle, receive sensor signal in per 60 seconds one time, then steal the feelings signal by the CH2 channel to the main frame transmission immediately if receive sensor signal.
Claims (7)
1. doubleclocking source time dissemination system based on wireless communication networks and GPS, it is characterized in that: comprise GPS time service machine, main frame, handset and sensor, main frame connects with GPS time service machine signal by radio receiver, main frame connects with all handset signal by wireless launcher, main frame is provided with the standby clock source of DS12C887, and the controller of main frame inserts the internet by the Internet gateway.
2. according to claim 1 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: described DS12C887 has clock, lithium battery and charging circuit.
3. according to claim 1 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: the GPS receiver of described GPS time service machine places high outdoor of receiving sensitivity, and the GPS receiver connects with solar photovoltaic powered device circuit.
As described in the claim 3 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: described GPS receiver has GPS receiver module, CPU and wireless transceiver, and the GPS module is extracted the required time of GPS time service and the CPU of year, month, day data connects with the console controller signal by wireless transceiver.
As described in claim 3 or 4 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: the single-chip microcomputer that the CPU of described GPS receiver is to use MPPT maximum power point tracking technology to programme.
6. according to claim 1 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: described main frame has USB and/or Ethernet interface, the controller of main frame is the STM32 microprocessor, and be provided with the human-machine operation interactive interface that TFT liquid crystal display and four buttons are formed, the physical link layer of Ethernet is ENC28J60 Ethernet interface chip, and the STM32 microprocessor connects by operation ICP/IP protocol and Internet network chain.
As described in claim 1 or 6 based on the doubleclocking source time dissemination system of wireless communication networks and GPS, it is characterized in that: be provided with different communication channels between main frame and GPS time service machine and the handset, the GPS receiver connects with main-machine communication by channel 0, and main frame is by the broadcast channel connection of communicating by letter with handset.
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| CN 201320206173 CN203224727U (en) | 2013-04-23 | 2013-04-23 | Dual-clock source time service system based on radio communication network and GPS |
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| CN 201320206173 CN203224727U (en) | 2013-04-23 | 2013-04-23 | Dual-clock source time service system based on radio communication network and GPS |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529690A (en) * | 2013-11-01 | 2014-01-22 | 西安邮电大学 | Wall clock for receiving Beidou satellite time and wall clock time calibrating method |
| CN104483827A (en) * | 2014-12-22 | 2015-04-01 | 中国计量学院 | System and method for calibrating digital clock measurement |
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
| CN112379587A (en) * | 2020-10-30 | 2021-02-19 | 中国石油天然气集团有限公司 | Ocean node time service system and time service method |
| CN112486013A (en) * | 2020-11-06 | 2021-03-12 | 北京明瑞之光科技有限公司 | Multi-node control system, regional wireless time service device thereof and landscape lighting system |
| CN114466445A (en) * | 2022-02-15 | 2022-05-10 | 河北高达智能装备股份有限公司 | Base station synchronization method |
-
2013
- 2013-04-23 CN CN 201320206173 patent/CN203224727U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529690A (en) * | 2013-11-01 | 2014-01-22 | 西安邮电大学 | Wall clock for receiving Beidou satellite time and wall clock time calibrating method |
| CN104483827A (en) * | 2014-12-22 | 2015-04-01 | 中国计量学院 | System and method for calibrating digital clock measurement |
| CN104834209A (en) * | 2015-04-13 | 2015-08-12 | 长沙天穹电子科技有限公司 | Timing device with air quality monitoring and satellite automatic time correction |
| CN104850004A (en) * | 2015-04-13 | 2015-08-19 | 长沙天穹电子科技有限公司 | Digital clock with air quality monitoring |
| CN104850004B (en) * | 2015-04-13 | 2017-09-29 | 长沙天穹电子科技有限公司 | A kind of digital clock with air quality monitoring |
| CN104834209B (en) * | 2015-04-13 | 2017-11-03 | 长沙天穹电子科技有限公司 | A kind of time set with air quality monitoring and satellite automatic correcting time |
| CN112379587A (en) * | 2020-10-30 | 2021-02-19 | 中国石油天然气集团有限公司 | Ocean node time service system and time service method |
| CN112486013A (en) * | 2020-11-06 | 2021-03-12 | 北京明瑞之光科技有限公司 | Multi-node control system, regional wireless time service device thereof and landscape lighting system |
| CN114466445A (en) * | 2022-02-15 | 2022-05-10 | 河北高达智能装备股份有限公司 | Base station synchronization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20150423 |
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| EXPY | Termination of patent right or utility model |