CN111614427A - High-accuracy time transfer device, method and system based on hospital time plate - Google Patents
High-accuracy time transfer device, method and system based on hospital time plate Download PDFInfo
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- CN111614427A CN111614427A CN202010407117.7A CN202010407117A CN111614427A CN 111614427 A CN111614427 A CN 111614427A CN 202010407117 A CN202010407117 A CN 202010407117A CN 111614427 A CN111614427 A CN 111614427A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
- H04L43/087—Jitter
Abstract
The invention discloses a high-accuracy time transfer method based on a hospital time card, which comprises the following steps: obtaining standard time data of a time source through a serial port, and processing the time data based on a network time protocol; updating the time of a local clock of a network time server of the server side according to the standard time data of the time source; receiving a timing request of a client, and sending standard time information to the client. The invention also provides a high-accuracy time transfer device and a high-accuracy time transfer system based on the hospital time plate. The invention ensures uninterrupted time transfer by selecting and setting various time source priorities; after the multipath time transfer device is built, network delay threshold analysis is carried out, a repeatability experiment is carried out, round-trip network delay of at least 10000 time timing requests is counted, the network delay threshold is analyzed, time packets with the network delay exceeding the threshold are discarded, and the time plate retransmits the timing requests, so that the high accuracy of timing is guaranteed.
Description
Technical Field
The invention relates to the technical field of medical facilities, in particular to a high-accuracy time transfer device, method and system based on a hospital time plate.
Background
Generally, the accuracy of time synchronization for medical pharmacology analysis needs to be controlled within seconds. At present, a medical institution has strong time synchronization requirements in the aspect of pharmacological analysis, a clinical specimen collection time, a delivery time, a failure time and a detection time in a laboratory of the medical institution have strict time sequence, and once the time control sequence is disordered, the detection result is inaccurate, and even clinical misdiagnosis is caused. In the calibration of 20 digital clocks in a pharmacological analysis room of a certain hospital, the clocks reach the accuracy of more than 1 second and even have a phase difference of several minutes. Therefore, the time recording of the hospital information system is accurate, and the complete unification and accuracy of the time of the hospital equipment or the hospital system are ensured.
In a wide area network range, a high-accuracy time transfer device, a method and a system based on a hospital time plate are researched, the current traditional field measurement calibration is used as a support, a modern communication technology and big data calculation are used as auxiliary tools, remote traceability is realized, and standard time is transferred to industries needing high-accuracy time synchronization without being influenced by transmission distance.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a high-accuracy time transfer device, method, and system based on a hospital time card. The technical scheme is as follows:
the invention provides a high-accuracy time transfer device based on a hospital time card, which comprises: a server side and a client side; the server side and the client side are connected through a wide area network;
the server side includes: the system comprises a network time server at a server end, a network switch at the server end and a data gateway at the server end;
the network time server of the server end is used for receiving the standard time of the time source and transmitting the standard time through the network;
the network switch of the server end is connected with the network time server of the server end and used for receiving and distributing the standard time transmitted by the network time server of the server end in a multipath manner;
the data gateway of the server end is connected with the network time server of the server end and used for a computer to acquire a standard time data packet transmitted by the network time server of the server end;
the client comprises a time server of the client, a network switch of the client and a time board;
the time server and the time board of the client are connected with the network switch of the client;
the time server of the client is used for receiving the standard time transmitted by the network time server of the server through the wide area network;
the network switch of the client is connected with the time server of the client and used for receiving and distributing the standard time transmitted by the network time server of the client in a multipath manner;
and the time plate is connected with the network switch of the client and used for acquiring the standard time distributed by the network switch of the client so as to enable the time of the time plate to be consistent with the time of the network time server of the server.
Furthermore, the server end also comprises a first control computer of the server end and a second control computer of the server end;
the first control computer of the server is connected with the data gateway and used for processing the standard time data packet and calculating network delay and time deviation;
and the second control computer of the server end is connected with the network switch of the server end and is used for network safety protection.
Furthermore, the server also comprises a time system, a GPS antenna and a BDS antenna; the time system, the GPS antenna and the BDS antenna are used as transmission sources of high-precision time;
the time system is used as a time source with priority 1, the BDS time acquired by the BDS antenna is used as a time source with priority 2, and the GPS time acquired by the GPS antenna is used as a time source with priority 3.
Further, the time system adopts an atomic clock, and the atomic clock comprises a hydrogen clock, a cesium clock and a rubidium clock.
In another aspect, a method for high accuracy time transfer based on hospital time cards includes:
1) obtaining standard time data of a time source through a serial port, and processing the time data based on a network time protocol;
2) updating the time of a local clock of a network time server of the server side according to the standard time data of the time source;
3) receiving a timing request of a client and sending standard time information to the client;
4) and the client sends a standard time data packet to the server to request time correction, analyzes and analyzes the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusts the local clock.
In another aspect, a high accuracy time transfer system based on hospital time cards is provided, comprising:
the standard time data processing module is used for acquiring standard time data of a time source through a serial port and processing the time data based on a network time protocol;
the local clock updating module is used for updating the time of the network time server local clock of the server side according to the standard time data of the time source;
the request receiving and response sending module is used for receiving a timing request of a client and sending standard time information to the client;
and the client processing module is used for sending a standard time data packet to the server, requesting time correction, analyzing and analyzing the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusting the local clock.
Further, in the client processing module, each returned standard time data packet includes four timestamps, and the time deviation and the network delay are calculated according to the four timestamps.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the high-accuracy time transfer device, method and system based on the hospital time board, uninterrupted time transfer is ensured through the priority selection setting of various time sources; after the multipath time transfer device is built, network delay threshold analysis is carried out, a repeatability experiment is carried out, round-trip network delay of at least 10000 time timing requests is counted, the network delay threshold is analyzed, time packets with the network delay exceeding the threshold are discarded, and the time plate retransmits the timing requests, so that the high accuracy of timing is guaranteed. The transmission range is not limited by distance, remote time transmission can be realized in the wide area network range, and the influence of network delay and network jitter on the synchronization precision and the achievable synchronization precision can be tested and analyzed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a high accuracy time transfer device based on hospital time plates according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a high-accuracy time transfer method based on a hospital time card according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
The present invention provides a high accuracy time transfer device based on hospital time cards, see fig. 1, comprising: a server side and a client side; the server side and the client side are connected through a wide area network;
the server side includes: the system comprises a network time server at a server end, a network switch at the server end and a data gateway at the server end;
the network time server of the server end is used for receiving the standard time of the time source and transmitting the standard time through the network;
the network switch of the server end is connected with the network time server of the server end and used for receiving and distributing the standard time transmitted by the network time server of the server end in a multipath manner;
the data gateway of the server end is connected with the network time server of the server end and used for a computer to acquire a standard time data packet transmitted by the network time server of the server end;
the client comprises a time server of the client, a network switch of the client and a time board;
the time server and the time board of the client are connected with the network switch of the client;
the time server of the client is used for receiving the standard time transmitted by the network time server of the server through the wide area network;
the network switch of the client is connected with the time server of the client and used for receiving and distributing the standard time transmitted by the network time server of the client in a multipath manner;
and the time plate is connected with the network switch of the client and used for acquiring the standard time distributed by the network switch of the client so as to enable the time of the time plate to be consistent with the time of the network time server of the server.
Furthermore, the server end also comprises a first control computer of the server end and a second control computer of the server end;
the first control computer of the server is connected with the data gateway and used for processing the standard time data packet and calculating network delay and time deviation;
and the second control computer of the server end is connected with the network switch of the server end and is used for network safety protection.
Furthermore, the server also comprises a time system, a GPS antenna and a BDS antenna; the time system, the GPS antenna and the BDS antenna are used as transmission sources of high-precision time;
the time system is used as a time source with priority 1, the BDS time acquired by the BDS antenna is used as a time source with priority 2, and the GPS time acquired by the GPS antenna is used as a time source with priority 3.
Further, the time system adopts an atomic clock, and the atomic clock comprises a hydrogen clock, a cesium clock and a rubidium clock.
Example 2
A high accuracy time transfer method based on hospital time cards is provided, see fig. 2, comprising:
s100: obtaining standard time data of a time source through a serial port, and processing the time data based on a network time protocol;
s200: updating the time of a local clock of a network time server of the server side according to the standard time data of the time source;
s300: receiving a timing request of a client and sending standard time information to the client;
s400: and the client sends a standard time data packet to the server to request time correction, analyzes and analyzes the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusts the local clock.
Example 3
There is provided a hospital time card based high accuracy time transfer system comprising:
the standard time data processing module is used for acquiring standard time data of a time source through a serial port and processing the time data based on a network time protocol;
the local clock updating module is used for updating the time of the network time server local clock of the server side according to the standard time data of the time source;
the request receiving and response sending module is used for receiving a timing request of a client and sending standard time information to the client;
and the client processing module is used for sending a standard time data packet to the server, requesting time correction, analyzing and analyzing the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusting the local clock.
Further, in the client processing module, each returned standard time data packet includes four timestamps, and the time deviation and the network delay are calculated according to the four timestamps.
Specifically, in this embodiment, the client processing module mainly takes responsibility to send a standard time data packet to the server, request timing, analyze and analyze the returned standard time data packet, obtain a clock deviation and a network delay of the time plate, and adjust the local clock. And each returned standard time data packet contains four timestamps, and the time deviation and the network delay are calculated according to the four timestamps. And each synchronization process needs to carry out multiple times of standard time data packet exchange, a group of network delay and clock deviation can be obtained each time, a repeatability experiment is carried out, the round-trip network delay of at least 10000 times of timing requests is analyzed statistically, and for the situation that the network delay is larger accidentally, a network delay threshold value is set in a program, namely when the network delay exceeds the threshold value, the time information packet is discarded, the timing request is sent again, and a group of local clocks with the minimum network delay is selected from the group of network delay and clock deviation to synchronize, so that the timing accuracy is ensured.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the high-accuracy time transfer device, method and system based on the hospital time board, uninterrupted time transfer is ensured through the priority selection setting of various time sources; after the multipath time transfer device is built, network delay threshold analysis is carried out, a repeatability experiment is carried out, round-trip network delay of at least 10000 time timing requests is counted, the network delay threshold is analyzed, time packets with the network delay exceeding the threshold are discarded, and the time plate retransmits the timing requests, so that the high accuracy of timing is guaranteed. The transmission range is not limited by distance, remote time transmission can be realized in the wide area network range, and the influence of network delay and network jitter on the synchronization precision and the achievable synchronization precision can be tested and analyzed.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A high accuracy time transfer device based on hospital time cards, comprising: a server side and a client side; the server side and the client side are connected through a wide area network;
the server side includes: the system comprises a network time server at a server end, a network switch at the server end and a data gateway at the server end;
the network time server of the server side is used for receiving the standard time of the time source and transmitting the standard time through the network;
the network switch of the server end is connected with the network time server of the server end and used for receiving and distributing the standard time transmitted by the network time server of the server end in a multipath manner;
the data gateway of the server end is connected with the network time server of the server end and used for a computer to acquire a standard time data packet transmitted by the network time server of the server end;
the client comprises a time server of the client, a network switch of the client and a time board;
the time server and the time board of the client are connected with the network switch of the client;
the time server of the client is used for receiving the standard time transmitted by the network time server of the server through the wide area network;
the network switch of the client is connected with the time server of the client and used for receiving and distributing the standard time transmitted by the network time server of the client in a multipath manner;
the time plate is connected with the network switch of the client and used for acquiring the standard time distributed by the network switch of the client, so that the time of the time plate is consistent with the time of the network time server of the server.
2. The hospital time card-based high accuracy time transfer device of claim 1, wherein the server side further comprises a server-side first control computer and a server-side second control computer;
the first control computer of the server is connected with the data gateway and used for processing the standard time data packet and calculating network delay and time deviation;
and the second control computer of the server end is connected with the network switch of the server end and is used for network safety protection.
3. The hospital time card-based high accuracy time transfer device of claim 2, wherein the server side further comprises a time system, a GPS antenna, a BDS antenna; the time system, the GPS antenna and the BDS antenna are used as transmission sources of high-precision time;
the time system is used as a time source with priority 1, the BDS time acquired by the BDS antenna is used as a time source with priority 2, and the GPS time acquired by the GPS antenna is used as a time source with priority 3.
4. The hospital time card-based high accuracy time transfer device of claim 3, wherein the time system employs an atomic clock including a hydrogen clock, a cesium clock, a rubidium clock.
5. A high accuracy time transfer method based on hospital time cards, comprising:
1) obtaining standard time data of a time source through a serial port, and processing the time data based on a network time protocol;
2) updating the time of a local clock of a network time server of the server side according to the standard time data of the time source;
3) receiving a timing request of a client and sending standard time information to the client;
4) and the client sends a standard time data packet to the server to request time correction, analyzes and analyzes the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusts the local clock.
6. A high accuracy time transfer system based on hospital time cards, comprising:
the standard time data processing module is used for acquiring standard time data of a time source through a serial port and processing the time data based on a network time protocol;
the local clock updating module is used for updating the time of the network time server local clock of the server side according to the standard time data of the time source;
the request receiving and response sending module is used for receiving a timing request of a client and sending standard time information to the client;
and the client processing module is used for sending a standard time data packet to the server, requesting time correction, analyzing and analyzing the returned standard time data packet to obtain the clock deviation and the network delay of the time plate, and adjusting the local clock.
7. The hospital time card-based high accuracy time delivery system of claim 6, wherein the client processing module includes four time stamps in each standard time data packet returned, and calculates the time deviation and the network delay according to the four time stamps.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687686A (en) * | 2021-08-10 | 2021-11-23 | 北京小米移动软件有限公司 | Clock synchronization method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070253533A1 (en) * | 2006-04-21 | 2007-11-01 | Peter Soukal | Device and method for the acquisition of medical data |
| CN110034840A (en) * | 2019-04-23 | 2019-07-19 | 江苏星网软件有限公司 | A kind of network clock synchronous device and system |
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- 2020-05-14 CN CN202010407117.7A patent/CN111614427A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070253533A1 (en) * | 2006-04-21 | 2007-11-01 | Peter Soukal | Device and method for the acquisition of medical data |
| CN110034840A (en) * | 2019-04-23 | 2019-07-19 | 江苏星网软件有限公司 | A kind of network clock synchronous device and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687686A (en) * | 2021-08-10 | 2021-11-23 | 北京小米移动软件有限公司 | Clock synchronization method and device, electronic equipment and storage medium |
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Application publication date: 20200901 |