CN102710409A - Time synchronizing device with safety isolation function - Google Patents
Time synchronizing device with safety isolation function Download PDFInfo
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- CN102710409A CN102710409A CN2012101813062A CN201210181306A CN102710409A CN 102710409 A CN102710409 A CN 102710409A CN 2012101813062 A CN2012101813062 A CN 2012101813062A CN 201210181306 A CN201210181306 A CN 201210181306A CN 102710409 A CN102710409 A CN 102710409A
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Abstract
The invention provides a time synchronizing device with a safe isolation function, which comprises an NTP (Network Time Protocol) client module (1), a window filter failure compensation module (2), a high reconstruction clock module (5), a voice transformation module (6), an in/out log module (7), a voice player (8), a panel display module (9), a press key (10), two NTP server modules (13, 14), a TOD time and date follower (15) and a driving module (18). The time synchronizing device provided by the invention can safely isolate a service to an Intranet, which is provided by an external network, and provides a safe, convenient and high-precision time synchronizing method for servers; and the time synchronizing device can synchronize with NTP website timing, and also can synchronize with a TOD series signal, and outputs series TOD and net opening signals to allow the plurality of device of a system formed by multiple servers to achieve time synchronizing.
Description
Technical field
The invention belongs to the time synchronized field, be specifically related to the time synchronism apparatus that a kind of safety is isolated.
Background technology
In the network system that plurality of devices is formed, the time synchronized of each equipment is absolutely necessary sometimes, and most of equipment is made up of computer server, and its time sync cap mainly contains serial ports TOD and network interface NTP signal.But most of servers seldom use serial ports, and when directly using outer net to carry out public NTP network school, this still all is difficult to avoided the attack of outer net to destroy to whole Intranet to a station server.Some is around the product of Network Isolation, to utilization and the processing imprecision of outer net NTP, the time signal low precision of acquisition; The precision of the NTP that forwards is not controlled yet, even is difficult to keep out the attack of outer net, when breaking off outer net even falling once electric time data and all can make mistakes; Especially NTP carries out at interval synchronously by visit, if cause synchronization failure owing to network reason even shutdown when arriving at predetermined interval, have to wait for that then next is synchronous more at interval; Do not provide the foreground prompting yet; State does not have the success or failure record to review during to the intranet and extranet school, and the poor reliability of time synchronized descends the cooperative ability of network system.
Summary of the invention
For overcoming above-mentioned defective, the invention provides the time synchronism apparatus that a kind of safety is isolated, for each server provides the safe ready precision high method for synchronizing time; Can with the NTP website regularly to the time, also can with the TOD rs 232 serial interface signal to the time, output serial ports TOD and network interface NTP signal, a plurality of equipment of the system that confession is made up of multiple servers to the time.
For realizing above-mentioned purpose; The time synchronism apparatus that the present invention provides a kind of safety to isolate; Its improvements are; The time synchronism apparatus that said safety is isolated comprises: NTP Client module (1), window filter that failure is added module (2), high reproduction clock module (5), phonetic modification module (6), gone into out log pattern (7), sound is put (8), panel display module (9), button (10), 2 ntp server modules (13,14), TOD Time of Day follower (15) and driver module (18); 232 serial ports (3) of the said NTP Client module (1) that is connected with outer net (11) are connected to said window filtration failure and add module (2), and said window filters failure and adds module (2) output time signal (4) to said height reproduction clock module (5); Said high reproduction clock module (5) is kept time to temporal information and is reappeared, and the temporal information that the serial ports (19) of said high reproduction clock module (5) will be handled is exported to said ntp server module (13), said ntp server module (14), said TOD Time of Day follower (15) and said phonetic modification module (6) respectively through said driver module (18); Said ntp server module (13,14) is served when connected computer provides the NTP school; Said TOD Time of Day follower (15) offers outside serial equipment with time signal through 232 order wires (16); Said phonetic modification module (6) is put (8) through said sound time of day is quoted with voice; Saidly go into out log pattern (7) success or failure state when said window filters the school of gathering and storing said NTP Client module (1) on the delivery outlet (4) that failure adds module (2); That also gathers and store said ntp server module (13,14) simultaneously provides NTP school success or failure state constantly to Intranet; State when said panel display module (9) shows date time and school, said button (10) is adjusted said panel display module (9) content displayed.
In the optimal technical scheme provided by the invention; Said window filters failure and adds module (2) frequency when status word and school when analyzing the school from the said NTP Client module (1) of 232 serial ports (3) for single-chip microcomputer (40); Confirm window starting point and length of window that window filters; Simultaneously with the time signal of said high reproduction clock module (5) transmission time scale benchmark, when success and the time signal error that filters out are near 1000 microseconds when the NTP school, just it are used as the window time signal and export as window; If the excessive i.e. output of error failure prompting; Frequency is a frequent when through 232 serial ports (3) said NTP Client module (1) being revised the school simultaneously, and it is synchronous to add interim NTP, frequency and panel demonstration when recovering original school during the school after the success again.
In second optimal technical scheme provided by the invention, said high reproduction clock module (5) comprising: single-chip microcomputer (43) and connected RTC circuit; Said RTC circuit comprises clock circuit chip (44) and connected crystal oscillator, electric capacity, rechargeable battery; Said single-chip microcomputer (43) receives the two-way time signal, and one the tunnel is to filter the time signal (4) that module (2) output is added in failure by said window, another road be by external time the source TOD time signal (12) come through 232 level conversion; Single-chip microcomputer (43) is passed to said clock circuit chip (44) with temporal information, and the time is kept time and reappears; Said single-chip microcomputer (43) frequency byte when state byte, school during with serial ports form output date time signal and NTP school; The output serial ports (19) that passes through of said single-chip microcomputer (43) is given said ntp server module (13,14), said TOD Time of Day follower (15) and said phonetic modification module (6) output signal (45) respectively through said driver module (18); Said TOD Time of Day follower (15) offers serial equipment with time signal through 232 order wires (16); Said single-chip microcomputer (43) is delivered to panel display module (9) through universal serial bus with display message, through button (10) displaying contents is adjusted; Said single-chip microcomputer (43) is given RTC clock chip (44) after reading window time signal (4) immediately; Make inner phase place second of RTC clock chip be able to reset; Next second the time slot before at hand frequently read data second of said RTC clock chip (44) at a high speed; Until reading new second, the side gives output serial ports whole times on date of form.
In the 3rd optimal technical scheme provided by the invention, saidly go into out log pattern (7), comprising: single-chip microcomputer (64) and serial non-volatile memory chip (41); Said single-chip microcomputer 64 filters delivery outlet (4) that failure adds module (2) at said window and goes up the success or failure status data when gathering network school outside said NTP Client module (1) visit; Also gather said ntp server module (13) simultaneously and NTP school success or failure status data constantly is provided, give serial non-volatile memory chip (41) through universal serial bus with these two kinds of success or failure status datas and store Intranet through serial ports (42).
In the 4th optimal technical scheme provided by the invention, said NTP Client module (1) the outer network school of visit success or failure status data constantly is less than 16 bytes; The big record data that NTP school success or failure state constantly are provided to Intranet are less than 32 bytes; Outer computer can be gone into out log pattern (7) and sends instructions to said through 232 serial ports, transfers into going out daily record and checks the success or failure record, searches the long-time synchronous maintenance situation of each equipment of system.
In the 5th optimal technical scheme provided by the invention, NTP Client module (1) comprising: network interface (20), NTP Client processor (21), frame information record component (23) and instruction input module (25); Said network interface (20) is isolated the outer net signal (11) that receives and signal processing, forms digital signal and gets into said NTP Client processor (21); Said NTP Client processor (21) communicates with said frame information record component (23) and said instruction input module (25) respectively.
In the 6th optimal technical scheme provided by the invention, said frame information record component (23) receives the frame information that said NTP Client processor (21) sends, frequency byte, date timing code and postamble when said frame information comprises frame head, state byte, school.
In the 7th optimal technical scheme provided by the invention, state byte represent this frame be during by the school output or failure when school during the normal school of frequency, failure add, the output in the state of the output of middle recursion and middle recursion; The frequency byte is arranged in second, minute, hour and day logarithmic data in 8 Bit datas of a byte in order during the school, the interval of moving when indicating the school with the chronomere of four magnitude differences respectively; The date timing code is the arrangement block of Time of Day data.
In the 8th optimal technical scheme provided by the invention, said instruction input module (25) carries out the operation that frame information is provided with to said NTP Client processor (21); Frequency byte, date timing code and postamble when said frame information comprises frame head, state byte, school.
In the 9th optimal technical scheme provided by the invention, said NTP Client processor (21) is provided with serial ports (22,24); Said NTP Client processor (21) communicates through serial ports (22) and said frame information record component (23); Said NTP Client processor (21) communicates through serial ports (24) and said instruction input module (25).
In the tenth optimal technical scheme provided by the invention, said ntp server module comprises: network interface (30) and ntp server processor (31); Said ntp server processor (31) receives the time of day (35) from height reproduction clock module (5) output; Said ntp server processor (31) output information (33) feeds out log pattern (7); Said information (33) comprising: when the IP address of Intranet access means and port numbers, school set a date the phase constantly in success or failure sign and school.
In the more preferably technical scheme provided by the invention, said ntp server processor (31) is provided with serial ports (32,34); Said ntp server processor (31) receives the time of day (35) from height reproduction clock module (5) output through serial ports (32); Said ntp server processor (31) feeds out log pattern (7) through serial ports (32) output information (33).
Provided by the invention second more preferably in the technical scheme, and said panel display module (9) is a display, the information of node when frequency word and next school when status word, school when showing date time data and the NTP school of input and output; Said button (10) comprising: the four direction button, the displaying contents of said display is adjusted.
The provided by the invention the 3rd more preferably in the technical scheme, and said panel display module (9) and said button (10) are formed display control panel; Status word comprises during said NTP school: the byte of state is added in failure and failure during normal when representing the school respectively, school.
The provided by the invention the 4th more preferably in the technical scheme; Said phonetic modification module (6) comprising: single-chip microcomputer (46) and low-frequency filter (48); Said single-chip microcomputer (46) is according to the time signal (19) of input; Output digital pulsewidth modulation ripple (47) is handled for said low-frequency filter (48), said low-frequency filter (48) and will be obtained analog waveform (49) and is delivered to said sound and puts (8) to digital pulsewidth modulation ripple (47).
The provided by the invention the 5th more preferably in the technical scheme; Said sound is put (8); Comprise: said sound is put chip (50), loudspeaker (53), volume control potentiometer (51) and off switch (52); Said sound is put and is transferred to said loudspeaker (53) sounding after chip (50) amplifies the analog waveform (49) that receives, and said volume control potentiometer (51) is put chip (50) with said sound respectively with said off switch (52) and is connected, and speech volume is regulated or closed.
The provided by the invention the 6th more preferably in the technical scheme, and the model of said single-chip microcomputer (40,43,64) is STC11F04E; The model of said clock circuit chip (44) is DS1302; It is the chip of STC12C5628 that said single-chip microcomputer (46) adopts model, and said low-frequency filter (48) is the RC low pass filter; It is the chip of M25P128 that said serial non-volatile memory chip (41) adopts model; The model that said sound is put chip (50) is HT4836.
With the prior art ratio, the time synchronism apparatus that a kind of safety provided by the invention is isolated, can with the NTP website regularly to the time, also can with the TOD rs 232 serial interface signal to the time, output serial ports TOD and network interface NTP signal, a plurality of equipment of the system that confession is made up of multiple servers to the time; This installs an end and allows to connect when into outer net carries out public NTP network school, and when other end access local area network supplied server to do the NTP school, the middle connection with serial ports carried out safe isolation; Have high reproduction clock can behind the outer net NTP that breaks and outage keep the output of high accuracy phase place second immediately after re-powering; Carry out high accuracy window filtration failure during to outer net NTP school and add the raising antijamming capability; When the monitoring of failing is also added the school immediately; Interim when improving the school frequency to guarantee high reliability, frequency when recovering original school during the school after the success again, state carries out the success or failure record during to the intranet and extranet school; Node when frequency, next school when state, school when panel shows All Time and school has voice reporting and supplies the multimachine comparison second.Be applicable to the system that multiple servers is formed a plurality of equipment and NTP isolation to the time.
Description of drawings
Fig. 1 is the structural representation of the time synchronism apparatus of safety isolation.
Fig. 2 is the structural representation of NTP Client module.
Fig. 3 is the structural representation of ntp server module.
Fig. 4 adds module for window filters failure, goes into out log pattern, high reproduction clock module, sound is put and the structural representation of phonetic modification module.
Embodiment
The formation sketch map of the time synchronism apparatus that safety is isolated is seen Fig. 1.
Omitted the technique of painting of cabinet and power supply among the figure.
NTP Client module 1 its 232 serial ports 3 that inserts outer net 11 is connected to window filtration failure and adds module 2, and window filtration failure is added the time signal 4 of module 2 outputs again to the high clock module 5 that reappears of not power down; 5 pairs of temporal informations of high reproduction clock module keep time and the high accuracy reproduction, and its serial ports is exported 19 and exported to two ntp server modules 13, TOD Time of Day follower 15, phonetic modification module 6 through driver module 18; The service when computer that ntp server module 114 links to Intranet provides the NTP school, TOD Time of Day follower 15 offer other serial equipment, phonetic modification module 6 with time signal through 232 order wires 16 and put 8 through sound again time of day quoted with voice; Go into out log pattern 7 success or failure state and storing when window filters the school of acquisition and recording NTP Client module 1 on the delivery outlet 4 that failure adds module 2, that also gathers storage ntp server module 13 simultaneously provides NTP school success or failure state constantly to Intranet; Panel shows information such as 9 states when showing date time and school, and button 10 can be adjusted displaying contents.
The NTP Client module constitutes sketch map and sees Fig. 2.
Wherein outer net signal 11 entering network interfaces 20 are isolated and signal processing; Form digital signal and get into NTP Client processor 21; The latter calculates by Network Time Protocol; From the serial ports complete time on date 23 of 22 outputs; Frequency, date timing code, postamble when its byte align is frame head, status word, school, its state byte represent that this frame is that failure when output or school, failure are added during the normal school of frequency during by the school, whether the output of middle recursion, the output of middle recursion normal, and the frequency byte is arranged in second, minute, hour, day logarithmic data in 8 Bit datas of a byte in order during its school; The interval of moving when indicating the school with the chronomere of four magnitude differences respectively, ingenious solution interval section only are difficult to two difficult problems that turn round and look at a kind of chronomere.Frequency can be provided with by network interface during the school; Also can be provided with by serial ports 24 input instructions 25; Frequency, date timing code, postamble when its byte align is frame head, status word, school; Client end processor 21 is obtaining being provided with the set NTP website of zero access, back, the moment of its next NTP visit during then by the school frequency calculate.
The ntp server module of the safe constructive method of Multi-function Time synchronisation source constitutes sketch map and sees Fig. 3.
Wherein Intranet signal 14 gets into network interfaces 30 and isolates and signal processing, forms digital signal and gets into ntp server processor 31, can the NTP service be arranged on the appointment network segment by network interface, the usefulness when supplying the server of a plurality of subsystems to do the NTP school.Serial ports 34 inputs of processor 31 are from the serial ports form time of day 35 of the high reproduction of not power down clock module 5 outputs; When Intranet equipment carries out NTP visit school to this module; This time constitutes the benchmark of timing; Network interface and processor through two ends calculate by Network Time Protocol, and Intranet equipment is able to realize time synchronized with this equipment.During this period might be owing to reasons such as network link cause synchronization failure, the processor 31 of this module promptly feeds out log pattern through the following information 33 of serial ports 32 outputs: when the IP address of Intranet access means and port numbers, school set a date the phase constantly in success or failure sign, school.
Window filters that failure is added module, gone into out log pattern, high reproduction clock module, sound is put and the phonetic modification module diagram is seen Fig. 4.
Single-chip microcomputer among the figure and contained software are example with the STC type of 51 series, have marked the position of the single-chip microcomputer serial model No. and first pin, have omitted the technique of painting of power supply, ground connection and crystal oscillator.
Window filters failure and adds module 2; Its input warp 232 serial ports 3 are from NTP Client module 1; Window filtration failure is added module 2 and mainly is made up of high-performance single-chip microcomputer 40 and contained software; High-performance single-chip microcomputer 40 frequency when status word is with the school when analyzing the school from the NTP Client module 1 of 232 serial ports 3 is confirmed the window starting point and the length of window of window filtration simultaneously height to be reappeared the time scale benchmark of the time signal of clock module 5 as window; So can bring up to 10 microsecond magnitudes to filtering accuracy, the nominal error magnitude of 1000 microseconds during far above the NTP school.When success and the time signal error that filters out are near 1000 microseconds when the NTP school; Just it being used as the window time signal exports; If error is excessive is the Out-Lost prompting, changes by panel to show that 9 give display reminding, and frequency is a frequent during simultaneously through 3 pairs of NTP Client modules of 232 serial ports, 1 modification school; It is synchronous to add interim NTP, frequency when recovering original school again after the success during school.
The high reproduction of not power down clock module 5; Mainly constitute by high-performance single-chip microcomputer 43 and contained software and real-time clock RTC circuit; The RTC circuit constitutes with clock circuit chip 44 and peripheral element crystal oscillator thereof, electric capacity, rechargeable battery; Wherein electric capacity has three of C1, C2, C3, and C1 can finely tune with the fine setting crystal oscillator frequency and make it to be tending towards accurate.The time signal that gets into single-chip microcomputer 43 has two-way; One the tunnel is to filter the time signal 4 that module 2 outputs are added in failure by window; Another road be by external time the source TOD time signal 12 come through 232 level conversion; Single-chip microcomputer 43 is passed to clock circuit chip 44 immediately with temporal information, and the time is kept time and high accuracy reproduction.Single-chip microcomputer 43 data such as frequency when status word, school during with serial ports form output date time signal and NTP school; Its serial ports output 19 is given two ntp server modules 13, TOD Time of Day follower 15, phonetic modification module 6 through driving 18 outputs 45, and TOD Time of Day follower 15 offers other serial equipment through 232 order wires 16 through panel jack with time signal.Single-chip microcomputer 43 is delivered to display 9 through universal serial bus with display message, adjusts through 10 pairs of displaying contents of button.
Go into out log pattern 7, mainly constitute by high-performance single-chip microcomputer 64 and contained software and serial non-volatile memory chip 41.Single-chip microcomputer 64 filters at window and gathers network school's success or failure status data constantly outside 1 visit of NTP Client module on the delivery outlet 4 of adding module 2 of failing; Also gather 13 pairs of Intranets of ntp server module simultaneously NTP school success or failure status data constantly is provided, give storage chip 41 through universal serial bus with these two kinds of success or failure status datas and store through serial ports 42.The arrangement of these two kinds of success or failure status datas such as top NTP Client module 1 are with described in the ntp server module 13; Wherein the small records data of the outer network school of visit success or failure state constantly are less than 16 bytes; The big record data that NTP school success or failure state constantly are provided to Intranet are less than 32 bytes; Storage chip 41 is the 16M byte such as using M25P128, if by every day to 20 NTP of extranet access, then need spend the 10K byte for Intranet provides 300 NTP to serve; The success or failure state recording is gone into out daily record in the time of then can storing the school in 3 years, and it is more than sufficient to be used for general running environment.These go into out daily record, and exterior PC can be monitored through serial ports 17 and transfer, and supply data preparation, state tracking, search the long-time synchronous maintenance situation of each equipment of system.
Information such as node when frequency word, next school when status word when showing whole date time datas and the NTP school of input and output by display 9 on the panel 54 (failure during normal during the school, school, failure are added), school; Button 10 comprises the four direction button, and displaying contents such as frequency is adjusted in the time of can be to time on date and school.
Sound puts 8; Putting chip 50, loudspeaker 53, volume control potentiometer 51, off switch 52 by the high efficiency sound constitutes; The analog waveform 49 of primary sound gets into sound and puts chip 50; After amplifying, promote loudspeaker 53 sounding, volume control potentiometer 51 can be regulated or close with off switch 52 knobs speech volume.
What need statement is that content of the present invention and embodiment are intended to prove the practical application of technical scheme provided by the present invention, should not be construed as the qualification to protection range of the present invention.Those skilled in the art can do various modifications, be equal to replacement or improvement under spirit of the present invention and principle inspiration.But these changes or modification are all in the protection range that application is awaited the reply.
Claims (17)
1. time synchronism apparatus that safety is isolated; It is characterized in that; The time synchronism apparatus that said safety is isolated comprises: NTP Client module (1), window filter that failure is added module (2), high reproduction clock module (5), phonetic modification module (6), gone into out log pattern (7), sound is put (8), panel display module (9), button (10), 2 ntp server modules (13,14), TOD Time of Day follower (15) and driver module (18); 232 serial ports (3) of the said NTP Client module (1) that is connected with outer net (11) are connected to said window filtration failure and add module (2), and said window filters failure and adds module (2) output time signal (4) to said height reproduction clock module (5); Said high reproduction clock module (5) is kept time to temporal information and is reappeared, and the temporal information that the serial ports (19) of said high reproduction clock module (5) will be handled is exported to said ntp server module (13), said ntp server module (14), said TOD Time of Day follower (15) and said phonetic modification module (6) respectively through said driver module (18); Said ntp server module (13,14) is served when connected computer provides the NTP school; Said TOD Time of Day follower (15) offers outside serial equipment with time signal through 232 order wires (16); Said phonetic modification module (6) is put (8) through said sound time of day is quoted with voice; Saidly go into out log pattern (7) success or failure state when said window filters the school of gathering and storing said NTP Client module (1) on the delivery outlet (4) that failure adds module (2); That also gathers and store said ntp server module (13,14) simultaneously provides NTP school success or failure state constantly to Intranet; State when said panel display module (9) shows date time and school, said button (10) is adjusted said panel display module (9) content displayed.
2. the time synchronism apparatus that safety according to claim 1 is isolated; It is characterized in that; Said window filters failure frequency when adding module (2) status word is with the school when analyzing the school from the said NTP Client module (1) of 232 serial ports (3) for single-chip microcomputer (40), confirms window starting point and length of window that window filters, and the time signal of simultaneously said high reproduction clock module (5) being transmitted is as the time scale benchmark of window; When success and the time signal error that filters out are near 1000 microseconds when the NTP school; Just it is used as the window time signal and exports, if the excessive i.e. output of error failure prompting, frequency is a frequent when through 232 serial ports (3) said NTP Client module (1) being revised the school simultaneously; It is synchronous to add interim NTP, frequency and panel demonstration when recovering original school again after the success during school.
3. the time synchronism apparatus that safety according to claim 1 is isolated is characterized in that said high reproduction clock module (5) comprising: single-chip microcomputer (43) and connected RTC circuit; Said RTC circuit comprises clock circuit chip (44) and connected crystal oscillator, electric capacity, rechargeable battery; Said single-chip microcomputer (43) receives the two-way time signal, and one the tunnel is to filter the time signal (4) that module (2) output is added in failure by said window, another road be by external time the source TOD time signal (12) come through 232 level conversion; Single-chip microcomputer (43) is passed to said clock circuit chip (44) with temporal information, and the time is kept time and reappears; Said single-chip microcomputer (43) frequency byte when state byte, school during with serial ports form output date time signal and NTP school; The output serial ports (19) that passes through of said single-chip microcomputer (43) is given said ntp server module (13,14), said TOD Time of Day follower (15) and said phonetic modification module (6) output signal (45) respectively through said driver module (18); Said TOD Time of Day follower (15) offers serial equipment with time signal through 232 order wires (16); Said single-chip microcomputer (43) is delivered to panel display module (9) through universal serial bus with display message, through button (10) displaying contents is adjusted; Said single-chip microcomputer (43) is given RTC clock chip (44) after reading window time signal (4) immediately; Make inner phase place second of RTC clock chip be able to reset; Next second the time slot before at hand frequently read data second of said RTC clock chip (44) at a high speed; Until reading new second, the side gives output serial ports whole times on date of form.
4. the time synchronism apparatus that safety according to claim 1 is isolated is characterized in that, saidly goes into out log pattern (7), comprising: single-chip microcomputer (64) and serial non-volatile memory chip (41); Said single-chip microcomputer 64 filters delivery outlet (4) that failure adds module (2) at said window and goes up the success or failure status data when gathering network school outside said NTP Client module (1) visit; Also gather said ntp server module (13) simultaneously and NTP school success or failure status data constantly is provided, give serial non-volatile memory chip (41) through universal serial bus with these two kinds of success or failure status datas and store Intranet through serial ports (42).
5. the time synchronism apparatus that safety according to claim 4 is isolated is characterized in that, said NTP Client module (1) the outer network school of visit success or failure status data constantly is less than 16 bytes; The big record data that NTP school success or failure state constantly are provided to Intranet are less than 32 bytes; Outer computer can be gone into out log pattern (7) and sends instructions to said through 232 serial ports, transfers into going out daily record and checks the success or failure record, searches the long-time synchronous maintenance situation of each equipment of system.
6. the time synchronism apparatus that safety according to claim 1 is isolated is characterized in that NTP Client module (1) comprising: network interface (20), NTP Client processor (21), frame information record component (23) and instruction input module (25); Said network interface (20) is isolated the outer net signal (11) that receives and signal processing, forms digital signal and gets into said NTP Client processor (21); Said NTP Client processor (21) communicates with said frame information record component (23) and said instruction input module (25) respectively.
7. the time synchronism apparatus that safety according to claim 6 is isolated; It is characterized in that; Said frame information record component (23) receives the frame information that said NTP Client processor (21) sends, frequency byte, date timing code and postamble when said frame information comprises frame head, state byte, school.
8. the time synchronism apparatus that safety according to claim 7 is isolated is characterized in that, state byte represent this frame be during by the school output or failure when school during the normal school of frequency, failure add, the output in the state of the output of middle recursion and middle recursion; The frequency byte is arranged in second, minute, hour and day logarithmic data in 8 Bit datas of a byte in order during the school, the interval of moving when indicating the school with the chronomere of four magnitude differences respectively; The date timing code is the arrangement block of Time of Day data.
9. the time synchronism apparatus that safety according to claim 6 is isolated is characterized in that said instruction input module (25) carries out the operation that frame information is provided with to said NTP Client processor (21); Frequency byte, date timing code and postamble when said frame information comprises frame head, state byte, school.
10. the time synchronism apparatus that safety according to claim 6 is isolated is characterized in that said NTP Client processor (21) is provided with serial ports (22,24); Said NTP Client processor (21) communicates through serial ports (22) and said frame information record component (23); Said NTP Client processor (21) communicates through serial ports (24) and said instruction input module (25).
11. the time synchronism apparatus that safety according to claim 1 is isolated is characterized in that said ntp server module comprises: network interface (30) and ntp server processor (31); Said ntp server processor (31) receives the time of day (35) from height reproduction clock module (5) output; Said ntp server processor (31) output information (33) feeds out log pattern (7); Said information (33) comprising: when the IP address of Intranet access means and port numbers, school set a date the phase constantly in success or failure sign and school.
12. the time synchronism apparatus that safety according to claim 11 is isolated is characterized in that said ntp server processor (31) is provided with serial ports (32,34); Said ntp server processor (31) receives the time of day (35) from height reproduction clock module (5) output through serial ports (32); Said ntp server processor (31) feeds out log pattern (7) through serial ports (32) output information (33).
13. the time synchronism apparatus that safety according to claim 1 is isolated; It is characterized in that; Said panel display module (9) is a display, the information of node when frequency word and next school when status word, school when showing date time data and the NTP school of input and output; Said button (10) comprising: the four direction button, the displaying contents of said display is adjusted.
14. the time synchronism apparatus that safety according to claim 13 is isolated is characterized in that said panel display module (9) and said button (10) are formed display control panel; Status word comprises during said NTP school: the byte of state is added in failure and failure during normal when representing the school respectively, school.
15. the time synchronism apparatus that safety according to claim 1 is isolated; It is characterized in that; Said phonetic modification module (6) comprising: single-chip microcomputer (46) and low-frequency filter (48); Said single-chip microcomputer (46) is according to the time signal (19) of input, and output digital pulsewidth modulation ripple (47) is handled for said low-frequency filter (48), said low-frequency filter (48) and will be obtained analog waveform (49) and is delivered to said sound and puts (8) to digital pulsewidth modulation ripple (47).
16. the time synchronism apparatus that safety according to claim 1 is isolated; It is characterized in that; Said sound is put (8), comprising: said sound is put chip (50), loudspeaker (53), volume control potentiometer (51) and off switch (52), and said sound is put and is transferred to said loudspeaker (53) sounding after chip (50) amplifies the analog waveform (49) that receives; Said volume control potentiometer (51) is put chip (50) with said sound respectively with said off switch (52) and is connected, and speech volume is regulated or closed.
17. the time synchronism apparatus according to claim 2,3,4,15,16 described safety are isolated is characterized in that the model of said single-chip microcomputer (40,43,64) is STC11F04E; The model of said clock circuit chip (44) is DS1302; It is the chip of STC12C5628 that said single-chip microcomputer (46) adopts model, and said low-frequency filter (48) is the RC low pass filter; It is the chip of M25P128 that said serial non-volatile memory chip (41) adopts model; The model that said sound is put chip (50) is HT4836.
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