CN101546169A - Method and device for calibrating time - Google Patents
Method and device for calibrating time Download PDFInfo
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- CN101546169A CN101546169A CN 200910082414 CN200910082414A CN101546169A CN 101546169 A CN101546169 A CN 101546169A CN 200910082414 CN200910082414 CN 200910082414 CN 200910082414 A CN200910082414 A CN 200910082414A CN 101546169 A CN101546169 A CN 101546169A
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Abstract
The invention discloses a method and a device for calibrating time, wherein the time-calibrating method comprises the following steps that: the time-calibrating device establishes a communication link with a network terminal through a USB interface protocol, acquires and saves standard time from a time server through the network terminal; the time-calibrating device updates the standard time to keep the standard time synchronous with the time of the time server; the time-calibrating device establishes the communication link with calibrated equipment through the USB interface protocol; and the calibrated equipment updates the internal time thereof according to the read standard time. The invention has the advantage that the internal time of the calibrated equipment is synchronized with the time of the time server, and a proposal for calibrating an internal clock of the equipment is easy to implement, is not limited by regions, and is economical and effective.
Description
Technical field
The present invention relates to the communication technology, particularly a kind of time calibrating method and device.
Background technology
The device interior clock signal is the key factor of equipment operate as normal, need device interior clock signal ability operate as normal such as some functional module in the equipment, need the clock signal of each equipment to be consistent in the communication between devices and could guarantee communication quality, so the device interior clock need be consistent with the standard time generally speaking.But because the mass discrepancy of device interior clock, after a period of time, owing to accumulate over a long period, deviation can take place with the standard time in the device interior clock, just may cause a lot of application normally to launch thus at equipment work.Therefore, when the device interior inaccurate clock, must calibrate, make itself and standard time synchronous it.For the equipment that can connect the Internet, can directly be undertaken synchronously by the time of the Internet and time server; And for the equipment that can not connect the Internet or other networks, the correction of its internal clocking accumulated error mainly contains following two kinds of methods:
A kind of method is a manual method, promptly when equipment is not connected with the Internet or other networks, eliminate the accumulated error of this internal clocking, and classic method is exactly to remove to adjust the device interior clock artificially.But the defective of this method is: not only troublesome poeration, and the difficult accuracy that guarantees internal clocking.
Another kind method is, GPS (Global PositioningSystem can be installed in equipment, hereinafter to be referred as: GPS) receiver, utilize the GPS receiver to receive and be synchronized to GPS mobile communications network signal or the paging signal of reference time, utilize and demoder that the GPS receiver is coupled decodes signal entrained GPS reference time from the signal that receives, the microprocessor in the equipment is calibrated internal clocking reference time according to this GPS again.Though utilize said method can accurately carry out the device interior clock alignment,, the defective of this method is: be applied in indoor equipment for some, when equipment can't receive gps signal, the calibration function of device interior clock can't be realized; And GPS receiver cost costliness, when the GPS receiver broke down, entire equipment all needed to reprocess, and this has not only delayed the operate as normal of equipment, has also increased the maintenance cost of equipment vendors virtually.
Summary of the invention
The purpose of this invention is to provide a kind of time calibrating method and device, make the internal clocking of equipment be synchronized with the time of time server, and the clock alignment scheme is simple, can not limited by the region, economical and effective.
The invention provides a kind of time calibrating method, comprising:
Time calibration device establishes a communications link by the USB interface protocol and the network terminal, obtains and preserves the standard time from time server by the described network terminal;
Described time calibration device upgrades the described standard time, and the time of described standard time and time server is kept synchronously;
Described time calibration device by the USB interface agreement be calibrated equipment and establish a communications link, the described equipment that is calibrated upgrades the described internal time that is calibrated equipment according to the described standard time of reading.
The invention provides a kind of time calibration device, comprising:
Interface module is used for establishing a communications link by the USB interface agreement and the network terminal, obtains the standard time by the described network terminal from time server, perhaps, by the USB interface agreement be calibrated equipment and establish a communications link;
Memory module is used to preserve the described standard time that described interface module is obtained;
Update module is used for upgrading the described standard time that described memory module is preserved, and the time of described standard time and time server is kept synchronously.
The present invention provides a kind of time calibration device again, comprising:
USB interface is used for establishing a communications link by the USB interface agreement and the network terminal, obtains the standard time by the described network terminal from time server, perhaps, by the USB interface agreement be calibrated equipment and establish a communications link;
Storage unit is used to preserve the standard time that described USB interface is obtained;
Timer is used for picking up counting when described storage unit is preserved the described standard time, and sends look-at-me when timing finishes;
Microprocessor, be used for when receiving the look-at-me that described timer sends, upgrading the described standard time that described storage unit is preserved, with the described standard time increase described timing unit from the timing that picks up counting finish the timing time of process, make the time of described standard time and time server keep synchronous.
The present invention is by adopting time calibration device, and utilize USB interface and network to establish a communications link, time server from network obtains the standard time and utilizes USB interface and be calibrated equipment and establishes a communications link, the equipment of being calibrated is calibrated its internal time from the standard time that time server obtains according to this time calibration device, this calibration program is realized simple, the calibration accuracy height, and can not limited by the region, economical and effective.
Description of drawings
Fig. 1 is the schematic flow sheet of time calibrating method first embodiment of the present invention;
Fig. 2 is the schematic flow sheet of time calibrating method second embodiment of the present invention;
Fig. 3 is the structural representation of time calibration device first embodiment of the present invention;
Fig. 4 is the structural representation of time calibration device second embodiment of the present invention;
Fig. 5 is the electrical block diagram of time calibration device second embodiment of the present invention.
Embodiment
The inventor finds that in realizing process of the present invention along with the fast development of modern science and technology, a lot of in the market equipment all have universal serial bus (Universal Serial Bus such as terminals such as mobile phones; Hereinafter to be referred as: USB) interface, function is enriched constantly.USB mainly is the bus that is used for connecting between computing machine and the peripheral unit, the function of its plug and play, making it not need just can arbitrarily peripheral unit be connected, dispose, use and remove through complicated installation procedure, be the main flow specification of computing machine related peripheral device at present.Therefore, can utilize this characteristic easily of USB interface, a kind of time calibrating method and time calibration device are provided, utilize this time calibrating method and time calibration device to carry out time calibration to the equipment that has USB interface, not only can not be subjected to the restriction of region like this, and the internal clocking of correcting device cost-effectively.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the schematic flow sheet of time calibrating method first embodiment of the present invention, and as shown in Figure 1, the present embodiment time calibrating method comprises:
Present embodiment is that the USB interface by time calibration device establishes a communications link this time calibration device and the network terminal such as computer, by network terminal access time server, the acquisition time server time, and this time server time is kept at time calibration device inside as the standard time.
The time with above-mentioned time server be kept at time calibration device inside as the standard time after, need constantly upgrade this standard time, make the time of itself and time server keep synchronous always.
When the equipment of being calibrated need carry out the internal clocking calibration, the time calibration device of present embodiment is connected on the equipment of being calibrated by USB interface, be calibrated the standard time of storing in the equipment time for reading calibrating installation, and remove to upgrade its internal time according to this standard time, because the standard time in the time calibration device and the time synchronized of time server, so the internal time through the equipment that is calibrated after the calibration is also synchronous with the time maintenance of time server, so just reach the internal time of calibrating the equipment that is calibrated, corrected the purpose of its internal time accumulated error.
The present invention is by adopting time calibration device, and utilize USB interface and network time server or the equipment that is calibrated to establish a communications link, make the internal time of the equipment that is calibrated be synchronized with the time of time server, this device interior clock alignment scheme realizes simple, can not limited by the region, economical and effective.
Fig. 2 is the schematic flow sheet of time calibrating method second embodiment of the present invention, and as shown in Figure 2, the present embodiment time calibrating method comprises:
Step 201, time calibration device establish a communications link by the USB interface agreement and the network terminal, obtain and preserve the standard time from time server by the network terminal.
Present embodiment is that the USB interface by time calibration device establishes a communications link this time calibration device and the network terminal such as computer, carries driver and working procedure in this time calibration device, and double-click can move.Then, time calibration device is by network terminal access time server, the acquisition time server time, and the time of this time server is kept at time calibration device inside as the standard time.
The timer of step 202, time calibration device inside carries out timing.
The time with above-mentioned time server be kept at time calibration device inside as the standard time in, the microprocessor in this time calibration device sends the instruction that picks up counting to timer internal, triggers this timer internal and picks up counting.
Step 203, judge whether the timer timing finishes.
It is sign that the timer timing finishes to send look-at-me, can every timing to 100 millisecond just produce once such as this timer internal and to interrupt, then microprocessor can judge whether timing finishes timer by judging whether to receive the look-at-me that timer sends.If receive the look-at-me that timer sends, then continue execution in step 204～205; If do not receive the look-at-me that timer sends, then represent also not timing end of timer, then continue execution in step 202, this timer internal is proceeded timing.
Step 204, upgrade the standard time, make the standard time increase timer from the timing that picks up counting finish the timing time of process.
Such as, the every timing to 100 of timer internal in a present embodiment millisecond generation is once interrupted, when microprocessor receives this look-at-me, just standard time of updated stored, with the standard time of preserving increase timer internal from the timing that picks up counting finish the timing time of process, being about to the standard time increases by 100 milliseconds, so just can keep the standard time of storing and the time synchronized of time server.Timer internal set and picking up counting again then, wait this timer internal once more timing to 100 millisecond produce when interrupting, microprocessor upgrades the standard time once more, makes it increase by 100 milliseconds.
Need to prove, the timer of present embodiment is that once to interrupt with every timing to 100 millisecond generation be example, in reality is implemented, this timing time can be adjusted, when equipment is comparatively strict to the requirement of time synchronized, timer internal can be adjusted,, so just the standard time degree of accuracy can be increased such as its every timing to 80 millisecond generation is once interrupted.This timing time can be adjusted into delicate level.
Step 205, time calibration device by the USB interface agreement be calibrated equipment and establish a communications link, the equipment that is calibrated upgrades its internal time according to the standard time of reading.
When the equipment of being calibrated need carry out the internal clocking calibration, the time calibration device of present embodiment is connected on the equipment of being calibrated by USB interface, be calibrated the standard time of storing in the equipment time for reading calibrating installation, and remove to upgrade its internal time according to this standard time, because the standard time in the time calibration device and the time synchronized of time server, so the internal time through the equipment that is calibrated after the calibration is also synchronous with the time maintenance of time server, so just reach the internal time of calibrating the equipment that is calibrated, corrected the purpose of its internal time accumulated error.
Time calibration device in the present embodiment has reusability, the reusable calibration multiple devices of a promptly same time calibration device.In addition, because this time calibration device needs off line to use,, can adopt the 3.3v button cell in the present embodiment so need power with battery.Button cell is controlled the power supply closure by toggle switch, when calibrating installation is worked between when not required, can allow this time calibration device be in off-position, open the control power supply when needing work again, be connected on the network terminal, obtain the standard time from time server, so not only prolonged the serviceable life of battery and can eliminate the accumulated error of the standard time of storage, guaranteed the degree of accuracy of the standard time of this time calibration device storage.
The present invention is by adopting time calibration device, and utilize USB interface and network time server or the equipment that is calibrated to establish a communications link, make the internal time of the equipment that is calibrated be synchronized with the time of time server, this device interior clock alignment scheme realizes simple, can not limited by the region, economical and effective.
Fig. 3 is the structural representation of time calibration device first embodiment of the present invention, as shown in Figure 3, the present embodiment time calibration device comprises interface module 301, memory module 302 and update module 303, wherein, interface module 301 is used for establishing a communications link by the USB interface agreement and the network terminal, obtain the standard time by the network terminal from time server, perhaps, by the USB interface agreement be calibrated equipment and establish a communications link; Memory module 302 is used for the described standard time that saving interface module 301 is obtained; Update module 303 is used for the standard time that updated stored module 302 is preserved, and the time of standard time and time server is kept synchronously.Further, update module 303 can comprise timing unit 3031 and processing unit 3032, and wherein, timing unit 3031 is used for picking up counting when described memory module 302 is preserved the standard time, and sends look-at-me when timing finishes; Processing unit 3032 is used for the standard time of updated stored module 302 storages when receiving the look-at-me that timing unit 3031 sends, will increase the standard time timing unit 3031 from the timing that picks up counting finish the timing time of process.
Concrete, the interface module 301 of present embodiment time calibration device establishes a communications link by the USB interface agreement and the network terminal, by network terminal access time server, the time of acquisition time server; Then this time server time was kept in the memory module 302 as the standard time.Update module 303 is regularly upgraded the standard time of storage in this memory module 302, so that it is synchronous with the time maintenance of time server all the time.The process that this update module 303 is upgraded the standard time is specifically as follows, and when memory module 302 was preserved the standard time, the processing unit 3032 in the update module 303 sent the instruction that picks up counting to timing unit 3031, and notice timing unit 3031 picks up counting.Timing unit 3031 sends look-at-me to processing unit 3032 when timing finishes, such as timing unit 3031 every timing to 100 millisecond just once interruption of generation, send look-at-mes to processing unit 3032.Processing unit 3032 upgrades the standard time of memory module 302 storages when receiving this look-at-me, make this standard time increase timing unit 3031 from the timing that picks up counting finish the timing time of process such as 100 milliseconds, maintain the standard the time all the time with the time synchronized of time server.When the equipment of being calibrated need carry out time calibration, interface module 301 by the USB interface agreement with this time calibration device be calibrated equipment and establish a communications link, the equipment of being calibrated reads the standard time of storage in the memory module 302, and upgrade its internal time according to this standard time, because the standard time in the time calibration device and the time synchronized of time server, so through the internal time of the equipment that is calibrated after the calibration also with the time synchronized of time server, so just reach the internal time of calibrating the equipment that is calibrated, corrected the purpose of its internal time accumulated error.
The present embodiment time calibration device can make the internal time of the equipment that has USB interface be synchronized with the time of time server; In addition, this time calibration device volume is little, in light weight, little power consumption, degree of accuracy height, cost are low, and because it belongs to external hanging type, can not exert an influence to the use of equipment, so can not increase the maintenance cost of equipment.
Fig. 4 is the structural representation of time calibration device second embodiment of the present invention, Fig. 5 is the electrical block diagram of time calibration device second embodiment of the present invention, as shown in Figure 4 and Figure 5, the present embodiment time calibration device comprises USB interface 401, storage unit 402, timer 403 and microprocessor 404, wherein, USB interface 401 is used for establishing a communications link by USB interface agreement and the network terminal or the equipment that is calibrated; Storage unit 402 is used to preserve the standard time that USB interface 401 is obtained; Timer 403 is used for picking up counting when storage unit 402 is preserved the standard time, and sends look-at-me when timing finishes; Microprocessor 404 is used for the standard time that updated stored unit 402 is preserved when receiving the look-at-me that timer 403 sends, and makes standard time and time server time keep synchronous.Further, the time calibration device in the present embodiment also comprises crystal oscillating circuit 405 and power supply 406, and wherein, crystal oscillating circuit 405 is used for providing the work clock signal to microprocessor 404, and power supply 406 is used for to microprocessor 404 power supplies.
Concrete, the USB interface 401 of present embodiment time calibration device establishes a communications link by the USB interface agreement and the network terminal, by network terminal access time server, the time of acquisition time server; Then this time server time was kept in the storage unit 402 as the standard time.When storage unit 402 was preserved the standard time, microprocessor 404 sent the instruction that picks up counting to timer 403, and notice timer 403 picks up counting.Timer 403 sends look-at-me to microprocessor 404 when timing finishes, such as timer 403 every timing to 100 millisecond just once interruption of generation, send look-at-mes to microprocessor 404.Microprocessor 404 upgrades the standard time of storage unit 402 storages when receiving this look-at-me, make this standard time increase timer 403 from the timing that picks up counting finish the timing time of process such as 100 milliseconds, maintain the standard the time all the time with the time synchronized of time server.When the equipment of being calibrated need carry out time calibration, USB interface 401 by the USB interface agreement with this time calibration device be calibrated equipment and establish a communications link, be calibrated the standard time of storage in the equipment reading cells 402, and upgrade its internal time according to this standard time, because the standard time in the time calibration device and the time synchronized of time server, so through the internal time of the equipment that is calibrated after the calibration also with the time synchronized of time server, so just reach the internal time of calibrating the equipment that is calibrated, corrected the purpose of its internal time accumulated error.
In addition, crystal oscillating circuit 405 can generate the required internal clock signal of microprocessor 404 work, offers microprocessor 404 to finish the renewal of standard time.Power supply 406 provides working power to microprocessor 404, and this power supply 406 can be controlled by switch key, and switch key is used to control power supply 406 and is connected with microprocessor 404 or disconnects.Power supply 406 in the present embodiment can adopt the 3.3v button cell, button cell is pressed the closure of key control power supply 406 by toggle switch, when calibrating installation is worked between when not required, can allow this time calibration device be in off-position, open by key control power supply 406 by toggle switch again when needing work, this time calibration device is connected on the network terminal, obtain the standard time from time server, so not only prolong the serviceable life of battery and can eliminate the accumulated error of the standard time of storage, guaranteed the degree of accuracy of the standard time of this time calibration device storage.
The present embodiment time calibration device can make the internal time of the equipment that has USB interface be synchronized with the time of time server; In addition, this time calibration device volume is little, in light weight, little power consumption, degree of accuracy height, cost are low, and because it belongs to external hanging type, can not exert an influence to the use of equipment, so can not increase the maintenance cost of equipment.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (9)
1, a kind of time calibrating method is characterized in that, comprising:
Time calibration device establishes a communications link by the USB interface protocol and the network terminal, obtains and preserves the standard time from time server by the described network terminal;
Described time calibration device upgrades the described standard time, and the time of described standard time and time server is kept synchronously;
Described time calibration device by the USB interface agreement be calibrated equipment and establish a communications link, the described equipment that is calibrated upgrades the described internal time that is calibrated equipment according to the described standard time of reading.
2, time calibrating method according to claim 1 is characterized in that, described time calibration device upgrades the described standard time, makes the time of described standard time and time server keep specifically comprising synchronously:
Described time calibration device is when preserving the described standard time, and the timer of described time calibration device inside picks up counting;
The microprocessor of described time calibration device inside is when receiving the look-at-me that described timer timing finishes to send, the described standard time of updated stored, with the described standard time increase described timer from the timing that picks up counting finish the timing time of process.
3, time calibrating method according to claim 2 is characterized in that, described timing time is 100 milliseconds.
4, a kind of time calibration device is characterized in that, comprising:
Interface module is used for establishing a communications link by the USB interface agreement and the network terminal, obtains the standard time by the described network terminal from time server, perhaps, by the USB interface agreement be calibrated equipment and establish a communications link;
Memory module is used to preserve the described standard time that described interface module is obtained;
Update module is used for upgrading the described standard time that described memory module is preserved, and the time of described standard time and time server is kept synchronously.
5, time calibration device according to claim 4 is characterized in that, described update module comprises:
Timing unit is used for picking up counting when described memory module is preserved the described standard time, and sends look-at-me when timing finishes;
Processing unit, the standard time that is used for when receiving the look-at-me that described timing unit sends, upgrading described memory module storage, with the described standard time increase described timing unit from the timing that picks up counting finish the timing time of process.
6, a kind of time calibration device is characterized in that, comprising:
USB interface is used for establishing a communications link by the USB interface agreement and the network terminal, obtains the standard time by the described network terminal from time server, perhaps, by the USB interface agreement be calibrated equipment and establish a communications link;
Storage unit is used to preserve the standard time that described USB interface is obtained;
Timer is used for picking up counting when described storage unit is preserved the described standard time, and sends look-at-me when timing finishes;
Microprocessor, be used for when receiving the look-at-me that described timer sends, upgrading the described standard time that described storage unit is preserved, with the described standard time increase described timing unit from the timing that picks up counting finish the timing time of process, make the time of described standard time and time server keep synchronous.
7, time calibration device according to claim 6 is characterized in that, also comprises: the crystal oscillating circuit that is used for providing to described microprocessor the work clock signal.
8, time calibration device according to claim 6 is characterized in that, also comprises: be used for the power supply to described microprocessor power supply.
9, time calibration device according to claim 8 is characterized in that, also comprises: be used for switch key that described power supply and described microprocessor are connected or disconnect.
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| CN 200910082414 CN101546169B (en) | 2009-04-15 | 2009-04-15 | Method and device for calibrating time |
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| CN 200910082414 CN101546169B (en) | 2009-04-15 | 2009-04-15 | Method and device for calibrating time |
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| WO2011060671A1 (en) * | 2009-11-20 | 2011-05-26 | 佛山市艾科电子工程有限公司 | Distributed time measuring method for measuring points and distributed time measuring system |
| CN101807044B (en) * | 2009-12-18 | 2011-08-10 | 安徽鑫龙电器股份有限公司 | Clock timing method of multifunctional meter |
| CN102314148A (en) * | 2010-07-06 | 2012-01-11 | 康佳集团股份有限公司 | Network electronic clock system and time correction method thereof |
| CN103257670A (en) * | 2012-02-21 | 2013-08-21 | 北京国微集成技术有限公司 | Embedded system and timing method thereof |
| CN103973804A (en) * | 2014-05-19 | 2014-08-06 | 广东欧珀移动通信有限公司 | Method and device for setting terminal time |
| CN104090483A (en) * | 2014-07-29 | 2014-10-08 | 苏州朗昇通信科技有限公司 | Method and device for calibrating time display instrument |
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| CN101807044B (en) * | 2009-12-18 | 2011-08-10 | 安徽鑫龙电器股份有限公司 | Clock timing method of multifunctional meter |
| CN102314148A (en) * | 2010-07-06 | 2012-01-11 | 康佳集团股份有限公司 | Network electronic clock system and time correction method thereof |
| CN102314148B (en) * | 2010-07-06 | 2014-11-05 | 康佳集团股份有限公司 | Network electronic clock system and time correction method thereof |
| CN103257670A (en) * | 2012-02-21 | 2013-08-21 | 北京国微集成技术有限公司 | Embedded system and timing method thereof |
| CN103257670B (en) * | 2012-02-21 | 2016-06-01 | 北京融合视讯科技有限公司 | Embedded system and clocking method thereof |
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| CN110391861A (en) * | 2018-04-19 | 2019-10-29 | 北京京东尚科信息技术有限公司 | A kind of method and apparatus of check timer |
| CN110391861B (en) * | 2018-04-19 | 2023-12-05 | 北京京东尚科信息技术有限公司 | Method, device, equipment and storage medium for correcting timer |
| CN108873668A (en) * | 2018-08-30 | 2018-11-23 | 新华三技术有限公司 | Time calibrating method, processor and time calibration system |
| CN108873668B (en) * | 2018-08-30 | 2021-05-07 | 新华三技术有限公司 | Time calibration method, processor and time calibration system |
| CN112148065A (en) * | 2019-06-28 | 2020-12-29 | 华为技术有限公司 | Time synchronization method and server |
| CN111781815A (en) * | 2020-07-14 | 2020-10-16 | 沈阳铁路信号有限责任公司 | Method for realizing calibration of recording time of recorder of motor train unit vehicular equipment |
| CN113485083A (en) * | 2020-12-04 | 2021-10-08 | 深圳穿金戴银科技股份有限公司 | Watchcase, watch timing structure and timing watch |
| CN113176742A (en) * | 2021-03-24 | 2021-07-27 | 广东芬尼克兹节能设备有限公司 | Centralized control method and device among multiple devices |
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