CN107367928A - A kind of outdoor master clock and its method of work for being used to build indoor and outdoor principal and subordinate's clock satellite time service system - Google Patents
A kind of outdoor master clock and its method of work for being used to build indoor and outdoor principal and subordinate's clock satellite time service system Download PDFInfo
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- CN107367928A CN107367928A CN201710576054.6A CN201710576054A CN107367928A CN 107367928 A CN107367928 A CN 107367928A CN 201710576054 A CN201710576054 A CN 201710576054A CN 107367928 A CN107367928 A CN 107367928A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 156
- 238000001514 detection method Methods 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000010453 quartz Substances 0.000 claims description 15
- 230000000284 resting effect Effects 0.000 claims description 15
- 239000013078 crystal Substances 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000009418 renovation Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
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Abstract
The present invention relates to clock satellite time service system field, discloses a kind of outdoor master clock and its method of work for being used to build indoor and outdoor principal and subordinate's clock satellite time service system.Pass through the outdoor master clock in outdoor arrangement, on the one hand satellite communication can be passed through, obtain the satellite standard time and update master clock local RTC time accordingly, on the other hand master clock local RTC time can be sent to interior from clock by communication, so as to be easy to interior automatically to be updated from clock according to master clock local RTC time from clock local RTC time, realize the automatic satellite time service to indoor clock, greatly improve the punctual precision of indoor clock, while by providing the power management scheme and communication mode of a set of energy-conservation, can be on the basis of progress satellite time transfer in time be met, reduce power dissipation overhead of the outdoor master clock when satellite signal receiving and time signal are sent, reduce information exchange cost, beneficial to outdoor long-term arrangement.
Description
Technical field
The present invention relates to clock satellite time service system field, in particular it relates to which a kind of be used to build indoor and outdoor principal and subordinate Zhong Wei
The outdoor master clock and its method of work of star time dissemination system.
Background technology
Present electronic clock is mostly the quartz clock of frequency when providing using quartz crystal, because quartz crystal exports frequency
The relation property of rate and environment temperature so that quartz clock timekeeping performance is relatively low, needs to use when walking time error occurs in electronic clock
Family manually adjusts the time, and use is extremely inconvenient.As the continuous development and people of modern Service of Timing are to accuracy of timekeeping requirement
Continuous improvement, the time keeping error of common tens seconds quartz clock maximum every months can not meet that people want to time precision
Ask.
Current quartz clock lacks accurate, reliable and stable, wide coverage time reference source, to electronic clock system
Time calibrated automatically.To realize the automatic time service to electronic clock, existing scheme is to be defended by satellite communication to obtain
The star standard time, accurate time service is then carried out according to the satellite standard time.But for indoor clock, due to arranging the limit in place
System, can not receive satellite-signal and satellite standard time, can not realize the purpose of satellite time transfer.
The content of the invention
For existing the problem of can not carrying out satellite time transfer to indoor clock, it is used to build interior the invention provides one kind
The outdoor master clock and its method of work of outer principal and subordinate's clock satellite time service system.
The technical solution adopted by the present invention, on the one hand provide a kind of for building indoor and outdoor principal and subordinate's clock satellite time service system
Outdoor master clock, including master clock body, the master clock body includes microprocessor, master clock local clock module, the first electronic cutting
Pass, satellite communication module, satellite communication antena, the second electronic switch, wireless communication module, radio antenna, battery module
And voltage stabilizing circuit module；
The microprocessor communicates to connect the master clock local clock module, the controlled end of first electronic switch, institute respectively
Satellite communication module, the controlled end of second electronic switch and the wireless communication module are stated, the satellite communication module is also
The satellite communication antena is communicated to connect, the wireless communication module also communicates to connect the radio antenna；
The battery module electrically connects the voltage stabilizing circuit module, and the power supply output end of the voltage stabilizing circuit module is electrically connected
One end of the energization input of the microprocessor, one end of first electronic switch and second electronic switch, it is described
The other end of first electronic switch electrically connects the energization input of the satellite communication module, second electronic switch it is another
End electrically connects the energization input of the wireless communication module.
Optimize, in addition to TRT and mounting bracket, the master clock body and the TRT are fixedly mounted on
In the mounting bracket；The battery module is rechargeable battery, and the master clock body also includes charge management module；The hair
Electric installation, the charge management module and the battery module are sequentially connected electrically.Further optimize, the TRT is too
Positive energy cell panel or wind-driven generator.
Optimization, when the master clock local clock module uses quartz crystal, the master clock body also includes communication link
Connect the temperature sensor of the microprocessor.
Optimization, the master clock body also includes the under-voltage detection module for communicating to connect the microprocessor, described under-voltage
The voltage detecting end of detection module electrically connects the power supply output end of the battery module.
Optimization, the master clock body also includes the watchdog module for communicating to connect the microprocessor.
The technical solution adopted by the present invention, on the other hand provide one kind and be previously described for building indoor and outdoor principal and subordinate's clock satellite
The method of work of the outdoor master clock of time dissemination system, including：
(1) master clock body is when default satellite communication time window reaches, when updating master clock local RTC in accordance with the following steps
Between：
S101. by controlling the conducting of the first electronic switch, satellite communication module and satellite communication antena are started；
If S102. receiving satellite-signal, and the satellite standard temporal information in the satellite-signal is successfully obtained, then according to
Satellite standard time information renovation master clock local RTC time, while by controlling the cut-off of the first electronic switch, close satellite and lead to
Believe module and satellite communication antena, otherwise when satellite communication time window finishes, by controlling the cut-off of the first electronic switch,
Close satellite communication module and satellite communication antena；
(2) master clock body is when default broadcast time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S201. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S202. according to master clock local RTC time, in i-th of unit interval t0Starting point, make wireless communication module and channel radio
Believe that antenna enters radio communication and sends state, and sent first and broadcast time service lead code is persistently sent in duration TT1, wherein, i
The natural number for being 1 for initial value, t0＜ TT1 ＜ 1.5t0；
S203. wireless communication module and radio antenna is made to enter radio communication resting state, until the i-th+2 unit interval
t0Starting point, then wireless communication module and radio antenna is entered radio communication again and send state, and in the second hair
The broadcast time service message for being sent in duration TT2 and including master clock local RTC time is sent, wherein, TT2 ＜ 0.3t0；
S204. wireless communication module and radio antenna is made to be again introduced into radio communication resting state, and in i+3≤3N-2
When, i=i+3 is set, is then back to and performs step S202, wherein, 3N is the unit interval t in time service time window is broadcasted0's
Number；
S205. when default broadcast time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna；
(3) master clock body is when default request time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S301. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S302. according to master clock local RTC time, with unit interval t0For the cycle, make wireless communication module and radio antenna
A length of first wireless signal for intercepting duration MT1 is intercepted during progress, if described first intercept received in duration MT1 time service please
Lead code is sought, then performs step S303, otherwise after end is intercepted, wireless communication module and radio antenna is entered wirelessly
Communicate resting state, is intercepted until next time, wherein, MT1 ＜ 0.1t0；
S303. after end is intercepted, wireless communication module and radio antenna is made to enter radio communication resting state, under
One unit interval t0Starting point, wireless communication module and radio antenna is entered radio communication and send state, and
The time service response message for including master clock local RTC time is sent in 3rd transmission duration TT3, then makes wireless communication module again
And radio antenna enters radio communication resting state, is intercepted until next time, wherein, TT3 ＜ 0.3t0；
S304. when default request time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna.
Optimization, when master clock local clock module uses quartz crystal, comprise the following steps：
S401. the real-time temperature value of acquisition is sent to microprocessor by temperature sensor；
S402. microprocessor is according to the real-time temperature value and frequency/temperature characterisitic of quartz crystal, during to master clock local RTC
Between compensate correction.
Optimization, when master clock body includes under-voltage detection module, comprise the following steps：
S501. under-voltage detection module when the power supply output voltage for detecting battery module is less than operating voltage threshold value, owe by generation
Alarm configured information is pressed, and the under-voltage alarm configured information is sent to microprocessor；
S502. microprocessor is by controlling the cut-off of the first electronic switch, continuously off satellite communication module and satellite communication day
Line, while by controlling the cut-off of the second electronic switch, continuously off wireless communication module and radio antenna, until receiving
Voltage from under-voltage detection module recovers configured information, and the voltage recovers configured information and finding electricity by under-voltage detection module
The power supply output voltage of pond module produces when recovering to operating voltage threshold value and the above.
Optimization, for master clock body after power-up initializing, unlatching once has the satellite communication time window without limit,
And after the renewal first of master clock local RTC time is completed, open and once broadcast time service time window.
To sum up, using it is provided by the present invention be used for build indoor and outdoor principal and subordinate's clock satellite time service system outdoor master clock and its
Method of work, have the advantages that：(1), on the one hand can be by satellite communication side by the outdoor master clock in outdoor arrangement
Formula, satellite standard time and accordingly renewal master clock local RTC time are obtained, on the other hand can be by communication by master clock
Local RTC time is sent to interior from clock, so as to be easy to it is indoor from clock automatically according to the renewal of master clock local RTC time from
Clock local RTC time, the automatic satellite time service to indoor clock is realized, greatly improve the punctual precision of indoor clock, make them
Every month is brought up to from the cumulative errors of existing tens seconds every months 1 second；(2) by providing the power management of a set of energy-conservation
Scheme and communication mode, can meet in time carry out satellite time transfer on the basis of, reduce outdoor master clock satellite signal receiving with
And power dissipation overhead during time signal transmission, information exchange cost is reduced, beneficial to outdoor long-term arrangement；(3) by configuring the sun
The energy outdoor TRT such as cell panel or wind-driven generator, can be charged to the rechargeable battery in the outdoor master clock, be mended
The electric energy of consumption is filled, that is, ensures the long-time stable work of outdoor master clock, mounting arrangements cost and maintenance cost can be reduced again；
(4) the outdoor master clock also have from punctual precision it is high, it is anti-crash, it is simple in construction and the characteristics of be easy to arrangement, be easy to it is actual should
With and promote.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the system structure diagram of indoor and outdoor principal and subordinate clock satellite time service system provided by the invention.
Fig. 2 is the circuit theory schematic diagram of outdoor master clock provided by the invention.
Fig. 3 is the satellite communication time diagram of outdoor master clock provided by the invention.
Fig. 4 is the radio communication time diagram of outdoor master clock provided by the invention.
In above-mentioned accompanying drawing：1st, master clock body 2, TRT 3, mounting bracket 301, top pole 302, sidepiece pole
11st, it is indoor from clock 21, telecommunication satellite.
Embodiment
Hereinafter with reference to accompanying drawing, described in detail by way of example provided by the present invention for building indoor and outdoor principal and subordinate
The outdoor master clock and its method of work of clock satellite time service system.Herein it should be noted that saying for these way of example
It is bright to be used to help understand the present invention, but do not form limitation of the invention.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, individualism B, while tri- kinds of situations of A and B, the terms be present
"/and " it is another affiliated partner relation of description, expression may have two kinds of relations, for example, A/ and B, can be represented：Individually deposit
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, it is that a kind of "or" is closed to typically represent forward-backward correlation object
System.
Embodiment one
Fig. 1 shows the system structure diagram of indoor and outdoor principal and subordinate clock satellite time service system provided by the invention, and Fig. 2 is shown
The circuit theory schematic diagram of outdoor master clock provided by the invention, Fig. 3 show that the satellite of outdoor master clock provided by the invention leads to
Believe time diagram, Fig. 4 shows the radio communication time diagram of outdoor master clock provided by the invention.
The outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system that the present embodiment provides, including master clock
Body 1, the master clock body 1 include microprocessor, master clock local clock module, the first electronic switch, satellite communication module, defended
Star communication antenna, the second electronic switch, wireless communication module, radio antenna, battery module and voltage stabilizing circuit module；It is described
Microprocessor communicates to connect the master clock local clock module, the controlled end of first electronic switch, the satellite and led to respectively
Letter module, the controlled end of second electronic switch and the wireless communication module, the satellite communication module also communicate to connect
The satellite communication antena, the wireless communication module also communicate to connect the radio antenna；The battery module is electrically connected
Connect the voltage stabilizing circuit module, the power supply that the power supply output end of the voltage stabilizing circuit module is electrically connected the microprocessor is defeated
Enter one end of end, one end of first electronic switch and second electronic switch, the other end of first electronic switch
The energization input of the satellite communication module is electrically connected, the other end of second electronic switch electrically connects the radio communication
The energization input of module.
As illustrated in fig. 1 and 2, indoors in outer principal and subordinate's clock satellite time service system, master clock body 1 is included and indoor from clock
11, on the one hand the master clock body 1 can carry out satellite communication with telecommunication satellite 21, to obtain the satellite standard time, and accordingly more
New master clock local RTC (Real-Time Clock, the real-time clock) times, on the other hand also it can carry out nothing from clock with each interior
Line communicates, and master clock local RTC time is authorized corresponding indoor from clock.In the structure of the outdoor master clock, the microprocessor
Device is used to carry out centralized pipe to the method for work of whole outdoor master clock by controlling the device mode such as electronic switch to realize
Control, on the one hand obtain the satellite standard time and update master clock local RTC time accordingly, on the other hand by master clock local RTC time
Send to interior from clock, so that interior is automatically updated from clock local RTC time from clock according to master clock local RTC time, realize
Automatic satellite time service to indoor clock.Frequency when the master clock local clock module is walked for offer, so as to master clock local RTC
Time is certainly punctual.First electronic switch is used under the control of the microprocessor, realizes to the satellite communication module
And the feed control of the satellite communication antena, and then control the work of the satellite communication module and the satellite communication antena
State, it can be, but not limited to as switching tube, relay or contact switch.The satellite communication module and the satellite communication day
Line carries out satellite communication when being used for upper electric, wherein, the satellite communication module can be, but not limited to as multi-mode satellite position receiver
Module.Second electronic switch is used under the control of the microprocessor, realizes to the wireless communication module and described
The feed control of radio antenna, and then control the wireless communication module and the radio antenna, its can with but not
It is limited to switching tube, relay or contact switch.The wireless communication module and the radio antenna are used for when upper electric
Radio communication is carried out, wherein, the wireless communication module can be, but not limited to the radio communication mould in 434MHz for working frequency range
Block.The battery module is used to provide electric energy support by the voltage stabilizing circuit module for other devices.
As shown in Figures 3 and 4, the method for work of the outdoor master clock can be, but not limited to include as follows：
(1) master clock body is when default satellite communication time window reaches, when updating master clock local RTC in accordance with the following steps
Between：
S101. by controlling the conducting of the first electronic switch, satellite communication module and satellite communication antena are started；
If S102. receiving satellite-signal, and successfully obtain the satellite standard temporal information in the satellite-signal and (use in figure 3
SS is represented), then according to satellite standard time information renovation master clock local RTC time, while by controlling the first electronic cutting
The cut-off of pass, satellite communication module and satellite communication antena are closed, otherwise when satellite communication time window finishes, passes through control
The cut-off of first electronic switch, close satellite communication module and satellite communication antena；
(2) master clock body is when default broadcast time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S201. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S202. according to master clock local RTC time, in i-th of unit interval t0Starting point, make wireless communication module and channel radio
Believe that antenna enters radio communication and sends state, and sent first and broadcast time service lead code is persistently sent in duration TT1 (in Fig. 4
It is middle to be represented with BPA), wherein, i is the natural number that initial value is 1, t0＜ TT1 ＜ 1.5t0；
S203. wireless communication module and radio antenna is made to enter radio communication resting state, until the i-th+2 unit interval
t0Starting point, then wireless communication module and radio antenna is entered radio communication again and send state, and in the second hair
The broadcast time service message (being represented in Fig. 4 with BST) for being sent in duration TT2 and including master clock local RTC time is sent, wherein, TT2 ＜
0.3t0；
S204. wireless communication module and radio antenna is made to be again introduced into radio communication resting state, and in i+3≤3N-2
When, i=i+3 is set, is then back to and performs step S202, wherein, 3N is the unit interval t in time service time window is broadcasted0's
Number；
S205. when default broadcast time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna；
(3) master clock body is when default request time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S301. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S302. according to master clock local RTC time, with unit interval t0For the cycle, make wireless communication module and radio antenna
A length of first wireless signal for intercepting duration MT1 is intercepted during progress, if described first intercept received in duration MT1 time service please
Lead code (can be represented with QPA) is sought, then performs step S303, otherwise after end is intercepted, makes wireless communication module and channel radio
Letter antenna enters radio communication resting state, is intercepted until next time, wherein, MT1 ＜ 0.1t0；
S303. after end is intercepted, wireless communication module and radio antenna is made to enter radio communication resting state, under
One unit interval t0Starting point, wireless communication module and radio antenna is entered radio communication and send state, and
The time service response message (being represented in Fig. 4 with RST) for including master clock local RTC time is sent in 3rd transmission duration TT3, then
Wireless communication module and radio antenna is entered radio communication resting state again, intercepted until next time, wherein,
TT3 ＜ 0.3t0；
S304. when default request time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna.
In above-mentioned method of work, for the satellite communication time window, the broadcast time service time window and/or institute
Request time service time window is stated, can periodically turn on：Such as every 6 hours open one or according to when
Between table carry out aperiodically unlatching：Such as at the time of variation of ambient temperature amplitude is larger (such as 3:00 AM or afternoon 5
Point) one is opened, wherein, the broadcast time service time window is with the request time service time window in master clock local RTC time
It is upper misaligned.In addition, optimization, in the request time service time window on the RTC time of master clock local, make wireless communication module and
The period that the period and entrance radio communication that radio antenna is intercepted into wireless signal send state is misaligned, it is possible thereby to
Whole method of work is realized using the wireless communication module of semiduplex mode, maintains the low equipment cost and low communication of outdoor master clock
The purpose of resource requirement.
By preceding method, not only can automatically be updated in order to interior from clock according to master clock local RTC time from clock sheet
Ground RTC time, the automatic satellite time service to indoor clock is realized, greatly improve the punctual precision of indoor clock, make them from now
The cumulative errors of some tens seconds every months bring up to every month 1 second, can also be led to by carrying out satellite in finite time
Letter and radio communication, efficiently realize the purpose of energy-conservation.If the unit interval t0For 1 second, then TT1 is designed with can illustrating as 1.2
Second, TT2 and TT3 are respectively 0.16 second, and MT1 is 0.05 second.
Optimization, in order to ensure master clock local RTC time after initialization can be with the satellite standard time and being associated with
Under maintain basic synchronization from clock body RTC time, master clock body can be made after power-up initializing, opening once has without prescribing a time limit
Long satellite communication time window, and after the renewal first of master clock local RTC time is completed, open and once broadcast the time service time
Window.
Optimization, in addition to TRT 2 and mounting bracket 3, the master clock body 1 and the TRT 2, which are fixed, pacifies
In the mounting bracket 3；The battery module is rechargeable battery, and the master clock body 1 also includes charge management module；
The TRT 2, the charge management module and the battery module are sequentially connected electrically.As illustrated in fig. 1 and 2, the generating
Device 2 is used to the electric energy of conversion is filled with into rechargeable battery in outdoor generating, and by the charge management module, to supplement room
The electric energy that outer master clock is consumed.The rechargeable battery can be, but not limited to as lithium battery.The TRT 2 can with but it is unlimited
In for solar panel or wind-driven generator, for the wind resistance of master clock outside enhanced room, the TRT 2 can be further
Preferably small-sized wind-driven generator.In addition, as described in Figure 1, specifically, the mounting bracket 3 for " on " font support, it is described
Master clock body 1 is fixedly mounted on the top pole 301 of the mounting bracket 3, and the TRT 2 is fixedly mounted on the peace
On the sidepiece pole 302 for filling support 3, the installation balance of outdoor master clock can be improved.
Optimization, when the master clock local clock module uses quartz crystal, the master clock body 1 also includes communication link
Connect the temperature sensor of the microprocessor.As shown in Fig. 2 the quartz crystal is used to provide away for master clock local RTC time
When frequency.The temperature sensor is used to gather environment temperature, step during to carry out following automorph：S401. temperature sensor
The real-time temperature value of acquisition is sent to microprocessor；S402. microprocessor is according to the real-time temperature value and quartz crystal
Frequency/temperature characterisitic, correction is compensated to master clock local RTC time.The temperature sensor preferably design is in quartz-crystal
The adjacent position of body, to ensure from punctual high accuracy.
Optimization, the master clock body 1 also includes the under-voltage detection module for communicating to connect the microprocessor, described under-voltage
The voltage detecting end of detection module electrically connects the power supply output end of the battery module.As shown in Fig. 2 the under-voltage detection module
Whether the power supply output voltage for detecting in the power supply output end of the battery module is less than operating voltage threshold value, and (it can be pre-
First set, for example, the standard power supply output voltage for 3.7V, may be designed as 3.2V), to realize what is saved further below
Step：S501. under-voltage detection module when the power supply output voltage for detecting battery module is less than operating voltage threshold value, owe by generation
Alarm configured information is pressed, and the under-voltage alarm configured information is sent to microprocessor；S502. microprocessor passes through control the
The cut-off of one electronic switch, continuously off satellite communication module and satellite communication antena, while by controlling the second electronic switch
Cut-off, continuously off wireless communication module and radio antenna, until receive the voltage from under-voltage detection module recover
Configured information, the voltage recover configured information by under-voltage detection module the power supply output voltage for finding battery module recover to
Produced when operating voltage threshold value and the above.Thus satellite time transfer work can also be stopped, in under-voltage condition to remain minimum
The dormancy of energy consumption.Further optimize, microprocessor can be after receiving the voltage and recovering configured information, and unlatching once has nothing
The satellite communication time window of limit, and after the renewal of master clock local RTC time is completed, open and once broadcast the time service time
Window.
Optimization, the master clock body 1 also includes the watchdog module for communicating to connect the microprocessor.As described in Figure 2,
The watchdog module is used to, when detecting that the microprocessor crashes, re-power and restart the microprocessor, prevent from growing
Time is in deadlock state.
Outdoor master clock and its work for being used to build indoor and outdoor principal and subordinate's clock satellite time service system that the present embodiment provides
Method, have the advantages that：(1) by the outdoor master clock in outdoor arrangement, on the one hand can be obtained by satellite communication
Take the satellite standard time and update master clock local RTC time accordingly, on the other hand can be local by master clock by communication
RTC time is sent to interior from clock, so as to be easy to interior automatically to be updated from clock according to master clock local RTC time from clock sheet
Ground RTC time, the automatic satellite time service to indoor clock is realized, greatly improve the punctual precision of indoor clock, make them from now
The cumulative errors of some tens seconds every months bring up to every month 1 second；(2) by providing the power management scheme of a set of energy-conservation
And communication mode, it can reduce outdoor master clock on the basis of meeting to carry out satellite time transfer in time at satellite signal receiving and award
When power dissipation overhead of signal when sending, information exchange cost is reduced, beneficial to outdoor long-term arrangement；(3) by configuring solar-electricity
The outdoor TRT such as pond plate or wind-driven generator, it can be charged to the rechargeable battery in the outdoor master clock, supplement disappears
The electric energy of consumption, that is, ensure the long-time stable work of outdoor master clock, mounting arrangements cost and maintenance cost can be reduced again；(4) institute
State outdoor master clock also have from punctual precision it is high, it is anti-crash, it is simple in construction and the characteristics of be easy to arrangement, be easy to practical application and push away
Extensively.
As described above, it can preferably realize the present invention.For a person skilled in the art, according to the religion of the present invention
Lead, design various forms of outdoor master clocks for being used to build indoor and outdoor principal and subordinate's clock satellite time service system and its method of work not
Need performing creative labour.These embodiments are changed without departing from the principles and spirit of the present invention, changed,
Replace, integration and modification are still fallen within protection scope of the present invention.
Claims (10)
1. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system, including master clock body (1), its feature exist
Include microprocessor, master clock local clock module in, the master clock body (1), the first electronic switch, satellite communication module, defend
Star communication antenna, the second electronic switch, wireless communication module, radio antenna, battery module and voltage stabilizing circuit module；
The microprocessor communicates to connect the master clock local clock module, the controlled end of first electronic switch, institute respectively
Satellite communication module, the controlled end of second electronic switch and the wireless communication module are stated, the satellite communication module is also
The satellite communication antena is communicated to connect, the wireless communication module also communicates to connect the radio antenna；
The battery module electrically connects the voltage stabilizing circuit module, and the power supply output end of the voltage stabilizing circuit module is electrically connected
One end of the energization input of the microprocessor, one end of first electronic switch and second electronic switch, it is described
The other end of first electronic switch electrically connects the energization input of the satellite communication module, second electronic switch it is another
End electrically connects the energization input of the wireless communication module.
2. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 1, its feature
It is, in addition to TRT (2) and mounting bracket (3), the master clock body (1) and the TRT (2) are fixedly mounted
In the mounting bracket (3)；
The battery module is rechargeable battery, and the master clock body (1) also includes charge management module；
TRT (2), the charge management module and the battery module are sequentially connected electrically.
3. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 2, its feature
It is, the TRT (2) is solar panel or wind-driven generator.
4. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 1, its feature
It is, when the master clock local clock module uses quartz crystal, it is described micro- that the master clock body (1) also includes communication connection
The temperature sensor of processor.
5. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 1, its feature
It is, the master clock body (1) also includes the under-voltage detection module for communicating to connect the microprocessor, the under-voltage detection module
Voltage detecting end electrically connect the power supply output end of the battery module.
6. a kind of outdoor master clock for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 1, its feature
It is, the master clock body (1) also includes the watchdog module for communicating to connect the microprocessor.
A kind of 7. outdoor for being used to build indoor and outdoor principal and subordinate's clock satellite time service system as described in claim 1~6 any one
The method of work of master clock, it is characterised in that including：
(1) master clock body is when default satellite communication time window reaches, when updating master clock local RTC in accordance with the following steps
Between：
S101. by controlling the conducting of the first electronic switch, satellite communication module and satellite communication antena are started；
If S102. receiving satellite-signal, and the satellite standard temporal information in the satellite-signal is successfully obtained, then according to
Satellite standard time information renovation master clock local RTC time, while by controlling the cut-off of the first electronic switch, close satellite and lead to
Believe module and satellite communication antena, otherwise when satellite communication time window finishes, by controlling the cut-off of the first electronic switch,
Close satellite communication module and satellite communication antena；
(2) master clock body is when default broadcast time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S201. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S202. according to master clock local RTC time, in i-th of unit interval t0Starting point, make wireless communication module and channel radio
Believe that antenna enters radio communication and sends state, and sent first and broadcast time service lead code is persistently sent in duration TT1, wherein, i
The natural number for being 1 for initial value, t0＜ TT1 ＜ 1.5t0；
S203. wireless communication module and radio antenna is made to enter radio communication resting state, until the i-th+2 unit interval
t0Starting point, then wireless communication module and radio antenna is entered radio communication again and send state, and in the second hair
The broadcast time service message for being sent in duration TT2 and including master clock local RTC time is sent, wherein, TT2 ＜ 0.3t0；
S204. wireless communication module and radio antenna is made to be again introduced into radio communication resting state, and in i+3≤3N-2
When, i=i+3 is set, is then back to and performs step S202, wherein, 3N is the unit interval t in time service time window is broadcasted0's
Number；
S205. when default broadcast time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna；
(3) master clock body is when default request time service time window reaches, when sending master clock local RTC in accordance with the following steps
Between：
S301. by controlling the conducting of the second electronic switch, wireless communication module and radio antenna are started；
S302. according to master clock local RTC time, with unit interval t0For the cycle, enter wireless communication module and radio antenna
A length of first wireless signal for intercepting duration MT1 is intercepted during row, and time service request is received in duration MT1 if being intercepted described first
Lead code, then step S303 is performed, otherwise after end is intercepted, wireless communication module and radio antenna is entered channel radio
Believe resting state, intercepted until next time, wherein, MT1 ＜ 0.1t0；
S303. after end is intercepted, wireless communication module and radio antenna is made to enter radio communication resting state, under
One unit interval t0Starting point, wireless communication module and radio antenna is entered radio communication and send state, and
The time service response message for including master clock local RTC time is sent in 3rd transmission duration TT3, then makes wireless communication module again
And radio antenna enters radio communication resting state, is intercepted until next time, wherein, TT3 ＜ 0.3t0；
S304. when default request time service time window finishes, by controlling the cut-off of the second electronic switch, channel radio is closed
Believe module and radio antenna.
A kind of 8. work side for being used to build the outdoor master clock of indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 7
Method, it is characterised in that when master clock local clock module uses quartz crystal, comprise the following steps：
S401. the real-time temperature value of acquisition is sent to microprocessor by temperature sensor；
S402. microprocessor is according to the real-time temperature value and frequency/temperature characterisitic of quartz crystal, during to master clock local RTC
Between compensate correction.
A kind of 9. work side for being used to build the outdoor master clock of indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 7
Method, it is characterised in that when master clock body includes under-voltage detection module, comprise the following steps：
S501. under-voltage detection module when the power supply output voltage for detecting battery module is less than operating voltage threshold value, owe by generation
Alarm configured information is pressed, and the under-voltage alarm configured information is sent to microprocessor；
S502. microprocessor is by controlling the cut-off of the first electronic switch, continuously off satellite communication module and satellite communication day
Line, while by controlling the cut-off of the second electronic switch, continuously off wireless communication module and radio antenna, until receiving
Voltage from under-voltage detection module recovers configured information, and the voltage recovers configured information and finding electricity by under-voltage detection module
The power supply output voltage of pond module produces when recovering to operating voltage threshold value and the above.
A kind of 10. work for being used to build the outdoor master clock of indoor and outdoor principal and subordinate's clock satellite time service system as claimed in claim 7
Method, it is characterised in that for master clock body after power-up initializing, unlatching once has the satellite communication time window without limit
Mouthful, and after the renewal first of master clock local RTC time is completed, open and once broadcast time service time window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576054.6A CN107367928B (en) | 2017-07-14 | 2017-07-14 | Outdoor master clock for constructing satellite time service system of indoor and outdoor master and slave clocks and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576054.6A CN107367928B (en) | 2017-07-14 | 2017-07-14 | Outdoor master clock for constructing satellite time service system of indoor and outdoor master and slave clocks and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107367928A true CN107367928A (en) | 2017-11-21 |
| CN107367928B CN107367928B (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710576054.6A Active CN107367928B (en) | 2017-07-14 | 2017-07-14 | Outdoor master clock for constructing satellite time service system of indoor and outdoor master and slave clocks and working method thereof |
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| CN (1) | CN107367928B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107367928B (en) | 2020-03-10 |
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