CN102710409B - A kind of time synchronism apparatus of security isolation - Google Patents
A kind of time synchronism apparatus of security isolation Download PDFInfo
- Publication number
- CN102710409B CN102710409B CN201210181306.2A CN201210181306A CN102710409B CN 102710409 B CN102710409 B CN 102710409B CN 201210181306 A CN201210181306 A CN 201210181306A CN 102710409 B CN102710409 B CN 102710409B
- Authority
- CN
- China
- Prior art keywords
- module
- time
- school
- ntp
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides the time synchronism apparatus of a kind of security isolation, including: NTP Client module (1), window filter unsuccessfully add module (2), high reproduction clock module (5), phonetic modification module (6), enter out log pattern (7), sound puts (8), panel display module (9), button (10), 2 ntp server modules (13,14), TOD Time of Day follower (15) and driving module (18).The time synchronism apparatus of the security isolation that the present invention provides, will receive from outer net and Intranet service will be carried out security isolation, provide, for each server, the method for synchronizing time that safe ready precision is high；Can with the timing pair of NTP website time, it is possible to during with TOD rs 232 serial interface signal pair, output serial ports TOD and network interface NTP signal, during for multiple equipment pair of the system being made up of multiple servers.
Description
Technical field
The invention belongs to time synchronized field, be specifically related to the time synchronism apparatus of a kind of security isolation.
Background technology
In the network system of plurality of devices composition, the time synchronized of each equipment is requisite sometimes, and most of equipment is made up of computer server, and its time sync cap mainly has serial ports TOD and network interface NTP signal.But most of servers seldom use serial ports, and directly use outer net to carry out public's NTP correcting time in network, this is to a station server or whole Intranet being all difficult to avoid that, the attack of outer net destroys.Some is around the product of Network Isolation, utilization and process imprecision to outer net NTP, the time signal low precision obtained, the precision of the NTP forwarded is not controlled by yet, even it is difficult to keep out the attack of outer net, all can make mistakes when disconnection outer net even falls once electricity time data, especially NTP synchronizes by accessing interval, when arriving in predetermined interval if owing to network reason is even shut down causes synchronization failure, then have to wait next interval resynchronisation, the most do not provide foreground prompting, success or failure record is not had to review state during intranet and extranet school, the poor reliability of time synchronized, the cooperative ability making network system declines.
Summary of the invention
For overcoming drawbacks described above, the invention provides the time synchronism apparatus of a kind of security isolation, provide, for each server, the method for synchronizing time that safe ready precision is high；Can with the timing pair of NTP website time, it is possible to during with TOD rs 232 serial interface signal pair, output serial ports TOD and network interface NTP signal, during for multiple equipment pair of the system being made up of multiple servers.
For achieving the above object, the present invention provides the time synchronism apparatus of a kind of security isolation, it thes improvement is that, the time synchronism apparatus of described security isolation includes: NTP Client module (1), window filter unsuccessfully add module (2), high reproduction clock module (5), phonetic modification module (6), enter out log pattern (7), sound puts (8), panel display module (9), button (10), 2 ntp server modules (13,14), TOD Time of Day follower (15) and driving module (18)；232 serial ports (3) of the described NTP Client module (1) being connected with outer net (11) are connected to described window filter and unsuccessfully add module (2), and described window filter unsuccessfully adds module (2) output time signal (4) to described high reproduction clock module (5)；Temporal information is carried out keeping time and reappearing by described high reproduction clock module (5), and the temporal information processed is exported respectively to described ntp server module (13), described ntp server module (14), described TOD Time of Day follower (15) and described phonetic modification module (6) by the serial ports (19) of described high reproduction clock module (5) by described driving module (18)；The service when connected computer provides NTP school of described ntp server module (13,14)；Time signal is supplied to outside serial equipment by 232 order wires (16) by described TOD Time of Day follower (15)；Described phonetic modification module (6) is put (8) by described sound and is quoted with voice by time of day；Described enter out log pattern (7) success or failure state when described window filter unsuccessfully adds the school gathering and storing described NTP Client module (1) on the delivery outlet (4) of module (2), the most also gather and store described ntp server module (13,14) provides NTP school success or failure state constantly to Intranet；Described panel display module (9) show date time and school time state, the content that described panel display module (9) is shown by described button (10) is adjusted.
In the optimal technical scheme that the present invention provides, described window filter unsuccessfully adds module (2) by analyzing from frequency when status word during the school of the described NTP Client module (1) of 232 serial ports (3) and school for single-chip microcomputer (40), determine window start and the length of window of window filter, the time signal simultaneously described high reproduction clock module (5) transmitted is as the time scale benchmark of window, when when NTP school, success and the time signal error that filters out are near 1000 microseconds, just it is considered as widow time signal to be exported, if excessive i.e. output of error is unsuccessfully pointed out, when described NTP Client module (1) being revised school by 232 serial ports (3), frequency is frequent simultaneously, add interim NTP to synchronize, when recovering original school again after success during school, frequency dough-making powder plate shows.
In the second optimal technical scheme that the present invention provides, described high reproduction clock module (5) including: single-chip microcomputer (43) and connected RTC circuit；Described RTC circuit includes clock circuit chip (44) and connected crystal oscillator, electric capacity, rechargeable battery；Described single-chip microcomputer (43) receives two-way time signal, one tunnel is unsuccessfully to be added, by described window filter, the time signal (4) that module (2) exports, and another road is by 232 level conversion by the TOD time signal (12) in external time source；Temporal information is passed to described clock circuit chip (44) by single-chip microcomputer (43), carries out keeping time and reappearing to the time；Described single-chip microcomputer (43) is with frequency byte when state byte, school when serial ports form output date time signal and NTP school, described single-chip microcomputer (43) give described ntp server module (13,14), described TOD Time of Day follower (15) and described phonetic modification module (6) output signal (45) by output serial ports (19) respectively through described driving module (18)；Time signal is supplied to serial equipment by 232 order wires (16) by described TOD Time of Day follower (15)；Display information is delivered to panel display module (9) by universal serial bus by described single-chip microcomputer (43), is adjusted display content by button (10)；RTC clock chip (44) given immediately by described single-chip microcomputer (43) after reading widow time signal (4), the second phase place making RTC clock chip internal is reset, the second data of described RTC clock chip (44) is the most frequently read in time slot before next second is at hand, until reading the new second, side gives the output whole date-time of serial ports form.
In the 3rd optimal technical scheme that the present invention provides, described in enter out log pattern (7), including single-chip microcomputer (64) and serial non-volatile storage chip (41)；The described single-chip microcomputer 64 success or failure status data when described window filter unsuccessfully adds the upper collection of delivery outlet (4) described NTP Client module (1) the outer network school of access of module (2), gather described ntp server module (13) also by serial ports (42) simultaneously and provide NTP school success or failure status data constantly to Intranet, give serial non-volatile storage chip (41) by universal serial bus by both success or failure status datas and store.
In the 4th optimal technical scheme that the present invention provides, described NTP Client module (1) accesses outer network school success or failure status data constantly less than 16 bytes；Intranet provide the big record data of NTP school success or failure state constantly less than 32 bytes；Outer computer can be entered out log pattern (7) by 232 serial ports send instructions to described, transfers and checks success or failure record, the holding situation that each equipment of lookup system synchronizes for a long time into going out daily record.
In the 5th optimal technical scheme that the present invention provides, NTP Client module (1) including: network interface (20), NTP Client processor (21), frame information record component (23) and instruction input module (25)；The outer net signal (11) received is carried out isolating and signal processing by described network interface (20), forms digital signal and enters described NTP Client processor (21)；Described NTP Client processor (21) communicates with described frame information record component (23) and described instruction input module (25) respectively.
In the 6th optimal technical scheme that the present invention provides, described frame information record component (23) receives the frame information that described NTP Client processor (21) sends, and described frame information includes frequency byte when frame head, state byte, school, date-time code and postamble.
In the 7th optimal technical scheme that the present invention provides, state byte represent this frame be by output during the normal school of frequency during school or the failure when school, unsuccessfully add, output in the state of the output of middle recursion and middle recursion；During school, second, minute, hour and natural law data are arranged in 8 Bit datas of a byte by frequency byte in order, the interval of action when indicating school with the unit of time of four magnitude differences respectively；Date-time code is the arrangement block of Time of Day data.
In the 8th optimal technical scheme that the present invention provides, described instruction input module (25) carries out the operation of frame information setting to described NTP Client processor (21)；Described frame information includes frequency byte when frame head, state byte, school, date-time code and postamble.
In the 9th optimal technical scheme that the present invention provides, described NTP Client processor (21) is provided with serial ports (22,24)；Described NTP Client processor (21) is communicated with described frame information record component (23) by serial ports (22)；Described NTP Client processor (21) is communicated with described instruction input module (25) by serial ports (24).
In the tenth optimal technical scheme that the present invention provides, described ntp server module includes: network interface (30) and ntp server processor (31)；Described ntp server processor (31) receives the time of day (35) exported from height reproduction clock module (5)；Described ntp server processor (31) output information (33) feeds out log pattern (7)；Described information (33) including: Intranet accesses the IP address of equipment and sets a date the phase constantly with success or failure mark when port numbers, school and school.
In the more preferably technical scheme that the present invention provides, described ntp server processor (31) is provided with serial ports (32,34)；Described ntp server processor (31) receives the time of day (35) exported from height reproduction clock module (5) by serial ports (32)；Described ntp server processor (31) feeds out log pattern (7) by serial ports (32) output information (33).
The present invention provide second more preferably in technical scheme, described panel display module (9) is display, the information of node when frequency word and school next time when status word, school when display input and the date-time data of output and NTP school；Described button (10) including: four direction button, is adjusted the display content of described display.
In the 3rd of present invention offer more preferably technical scheme, described panel display module (9) and described button (10) composition display control panel；During described NTP school, status word includes: failure and unsuccessfully add the byte of state during normal when representing school respectively, school.
In the 4th of present invention offer more preferably technical scheme, described phonetic modification module (6) including: single-chip microcomputer (46) and low-frequency filter (48), described single-chip microcomputer (46) is according to the time signal (19) of input, described low-frequency filter (48) is given in output digital pulsewidth modulation ripple (47), and digital pulsewidth modulation ripple (47) is processed and will obtain analog waveform (49) and is delivered to described sound and puts (8) by described low-frequency filter (48).
In the 5th of present invention offer more preferably technical scheme, described sound puts (8), including: described sound puts chip (50), loudspeaker (53), volume control potentiometer (51) and closing switch (52), described sound is put after the analog waveform (49) received is amplified by chip (50) and is transferred to described loudspeaker (53) sounding, described volume control potentiometer (51) and described closing switch (52) are put chip (50) respectively and are connected with described sound, are adjusted speech volume or close.
In the 6th of present invention offer more preferably technical scheme, the model of described single-chip microcomputer (40,43,64) is STC11F04E；The model of described clock circuit chip (44) is DS1302；Described single-chip microcomputer (46) uses model to be the chip of STC12C5628, and described low-frequency filter (48) is RC low pass filter；Described serial non-volatile storage chip (41) uses model to be the chip of M25P128；It is HT4836 that described sound puts the model of chip (50).
Compared with the prior art, the time synchronism apparatus of a kind of security isolation that the present invention provides, can with the timing pair of NTP website time, it is possible to during with TOD rs 232 serial interface signal pair, output serial ports TOD and network interface NTP signal, during for multiple equipment pair of the system being made up of multiple servers；This device one end allows to tap into outer net and carries out public's NTP correcting time in network, and when other end access local area network makees NTP school for server, middle connection with serial ports carries out security isolation；Have high reproduction clock can after drop outer net NTP and power-off re-power after keep high accuracy second phase output immediately；Carry out high-precision window during to outer net NTP school to filter and unsuccessfully add raising capacity of resisting disturbance, when unsuccessfully monitoring and add school immediately, during interim raising school, frequency is to ensure high reliability, recovers frequency during original school again, state during intranet and extranet school is carried out success or failure record during school after success；Node when frequency, next school when state, school when Display panel All Time and school, has the voice reporting second for multimachine comparison.During the isolation pair of the multiple equipment and the NTP that are applicable to the system of multiple servers composition.
Accompanying drawing explanation
Fig. 1 is the structural representation of the time synchronism apparatus of security isolation.
Fig. 2 is the structural representation of NTP Client module.
Fig. 3 is the structural representation of ntp server module.
Fig. 4 be window filter unsuccessfully add module, enter out log pattern, high reproduction clock module, sound are put and the structural representation of phonetic modification module.
Detailed description of the invention
Fig. 1 is shown in by the composition schematic diagram of the time synchronism apparatus of security isolation.
Figure eliminates the technique of painting of cabinet and power supply.
Its 232 serial ports 3 of the NTP Client module 1 of accessing external network 11 is connected to window filter and unsuccessfully adds module 2, and window filter is unsuccessfully added the time signal 4 of module 2 output and reappeared clock module 5 to not power down height again；High reproduction clock module 5 carries out punctual and high accuracy reproduction to temporal information, and its serial ports output 19 exports to two ntp server modules 13,14, TOD Time of Day follower 15, phonetic modification module 6 through driving module 18；Time signal is supplied to other serial equipment by 232 order wires 16 by ntp server module 14 service when computer that Intranet links provides NTP school, TOD Time of Day follower 15, phonetic modification module 6 is put 8 by sound again and quoted with voice by time of day；Entering out log pattern 7 success or failure state storing when window filter unsuccessfully adds the school of acquisition and recording NTP Client module 1 on the delivery outlet 4 of module 2, the most also gather storage ntp server module 13 provides NTP school success or failure state constantly to Intranet；Display panel 9 show date time and school time the information such as state, display content can be adjusted by button 10.
Fig. 2 is shown in by NTP Client module composition schematic diagram.
Wherein outer net signal 11 enters network interface 20 and carries out isolating and signal processing, form digital signal and enter NTP Client processor 21, the latter is calculated by Network Time Protocol, complete date-time 23 is exported from serial ports 22, its byte align is frame head, status word, frequency during school, date-time code, postamble, its state byte represents that this frame is by failure when output or school during the normal school of frequency during school, unsuccessfully add, middle recursion output, middle recursion output is the most normal, during its school, frequency byte is by the second, minute, hour, natural law data are arranged in 8 Bit datas of a byte in order, the interval of action when indicating school with the unit of time of four magnitude differences respectively, ingenious solution interval section is only difficult to a difficult problem for two Gus with a kind of unit of time.During school, frequency can be configured by network interface, also can be inputted instruction 25 by serial ports 24 to be configured, frequency, date-time code, postamble when its byte align is frame head, status word, school, client end processor 21 immediately accesses set NTP website after being arranged, and the moment that its next time, NTP accessed then is calculated by frequency during school.
Fig. 3 is shown in by the ntp server module composition schematic diagram of the safe constructive method of Multi-function Time synchronisation source.
Wherein Intranet signal 14 enters network interface 30 and carries out isolating and signal processing, forms digital signal and enters ntp server processor 31, by network interface, NTP service can be arranged on the appointment network segment, and the server of confession multiple subsystems is used when doing NTP school.The serial ports 34 of processor 31 inputs the serial ports form time of day 35 from reproduction clock module 5 output of not power down height, when Intranet equipment carries out NTP access school to this module, this time constitutes the benchmark of timing, network interface and processor through two ends are calculated by Network Time Protocol, and Intranet equipment is able to realize time synchronized with this equipment.Being likely due to the reasons such as network link during this period and cause synchronization failure, the processor 31 of this module i.e. exports following information 33 by serial ports 32 and feeds out log pattern: Intranet accesses the IP address of equipment and sets a date the phase constantly with success or failure mark, school when port numbers, school.
Window filter unsuccessfully add module, enter out log pattern, high reproduction clock module, sound are put and are seen Fig. 4 with phonetic modification module diagram.
Single-chip microcomputer in figure and contained software, as a example by the STC type of 51 series, are labelled with single-chip microcomputer serial model No. and the position of the first foot, eliminate the technique of painting of power supply, ground connection and crystal oscillator.
Window filter unsuccessfully adds module 2, it inputs through 232 serial ports 3 from NTP Client module 1, it is main by High Performance SCM 40 and contained software sharing that window filter unsuccessfully adds module 2, frequency when status word and school when High Performance SCM 40 is by analyzing the school from the NTP Client module 1 of 232 serial ports 3, determine window start and the length of window of window filter, height is reappeared the time signal time scale benchmark as window of clock module 5 simultaneously, so filtering accuracy can be brought up to 10 musec order, nominal error magnitude far above 1000 microseconds during NTP school.When NTP school, success and the time signal error that filters out are near 1000 microseconds, just it is considered as widow time signal to be exported, if error excessive i.e. Out-Lost prompting, turn and given display reminding by Display panel 9, when NTP Client module 1 being revised school by 232 serial ports 3, frequency is frequent simultaneously, add interim NTP to synchronize, during school, after success, recover frequency during original school again.
Not power down height reproduction clock module 5, mainly it is made up of High Performance SCM 43 and contained software and real-time clock RTC circuit, RTC circuit is constituted with clock circuit chip 44 and peripheral element crystal oscillator thereof, electric capacity, rechargeable battery, wherein electric capacity has C1, C2, C3 tri-, C1 can finely tune crystal oscillator frequency to be allowed to tend to accurate.The time signal entering single-chip microcomputer 43 has two-way, one tunnel is unsuccessfully to be added the time signal 4 that module 2 exports by window filter, another road is by 232 level conversion by the TOD time signal 12 in external time source, temporal information is passed to clock circuit chip 44 by single-chip microcomputer 43 immediately, and the time carries out punctual and high accuracy reproduction.Single-chip microcomputer 43 is with data such as frequency when status word, school when serial ports form output date time signal and NTP school, its serial ports output 19 is through driving 18 outputs 45 to two ntp server modules 13, TOD Time of Day follower 15, phonetic modification modules 6, and time signal is supplied to other serial equipment by 232 order wires 16 through panel jack by TOD Time of Day follower 15.Display information is delivered to display 9 by universal serial bus by single-chip microcomputer 43, is adjusted display content by button 10.
Enter out log pattern 7, be mainly made up of High Performance SCM 64 and contained software and serial non-volatile storage chip 41.Single-chip microcomputer 64 is unsuccessfully added collection NTP Client module 1 on the delivery outlet 4 of module 2 at window filter and is accessed outer network school success or failure status data constantly, gather ntp server module 13 also by serial ports 42 simultaneously and provide NTP school success or failure status data constantly to Intranet, give storage chip 41 by universal serial bus by both success or failure status datas and store.The arrangement of both success or failure status datas is as described in NTP Client module 1 above and ntp server module 13, wherein access the small records data of outer network school success or failure state constantly less than 16 bytes, Intranet provide the big record data of NTP school success or failure state constantly less than 32 bytes, storage chip 41 such as uses M25P128, for 16M byte, if by every day to 20 NTP of extranet access, providing 300 NTP services for Intranet, need to spend 10K byte, when then can store the school of 3 years, success or failure state recording enters out daily record, more than sufficient for general running environment.These enter out daily record, and exterior PC can be monitored transferring by serial ports 17, the holding situation synchronized for a long time for data compilation, state tracking, each equipment of lookup system.
The information such as node when frequency word, school next time when being shown input and whole date-time data of output and status word during NTP school (failure during normal, school during school, unsuccessfully add), school by display 9 on panel 54, button 10 includes four direction button, can be adjusted the display contents such as frequency when date-time and school.
Phonetic modification module 6, by high-speed microprocessor 46 and software sharing thereof, single-chip microcomputer 46 is according to the time signal 19 of input, output digital pulsewidth modulation ripple 47, the date-time voice signal that it comprises quoted time 4 figure place at the 42nd second to the 43rd second with voice, moon day 4 figure place is quoted at the 44th second to the 45th second, hour minute 4 figure places are quoted at the 46th second to the 47th second, when other even number second, second 2 figure place quoted in voice, a very brief sibilant rale is only exported when the odd number second, so layout both can get time delay less than ten thousand/ second beat, whole date-time information can be obtained again in one minute.The speech digit pulse width modulation wave 47 that single-chip microcomputer is exported with software digital sampling pulse width modulation system from the port Serial output of single-chip data parallel port, through low-frequency filter 48, radio-frequency component corresponding to sample frequency is filtered, will before the high frequency pre-lift of speech sample also be fallen after rise simultaneously, obtain the analog waveform 49 of near original sound.Low-frequency filter 48 is simple RC low pass filter, is made up of R1, R2, R3, C4, C5.
Sound puts 8, put chip 50 by high efficiency sound, loudspeaker 53, volume control potentiometer 51, closing switch 52 are constituted, the analog waveform 49 of primary sound enters sound and puts chip 50, amplified promotion loudspeaker 53 sounding, and speech volume can be adjusted or close by volume control potentiometer 51 and closing switch 52 knob.
It is to be understood that, present invention and detailed description of the invention are intended to prove the actual application of technical scheme provided by the present invention, should not be construed as limiting the scope of the present invention.Those skilled in the art inspired by the spirit and principles of the present invention, can various modifications may be made, equivalent or improve.But these changes or amendment are all in the protection domain that application is awaited the reply.
Claims (16)
1. the time synchronism apparatus of a security isolation, it is characterised in that the time synchronized of described security isolation
Device includes: NTP Client module (1), window filter unsuccessfully add module (2), height reappears clock module (5),
Phonetic modification module (6), enter out log pattern (7), sound puts (8), panel display module (9), button (10), 2
Individual ntp server module (13,14), TOD Time of Day follower (15) and driving module (18)；With outer net (11)
232 serial ports (3) of the described NTP Client module (1) connected are connected to described window filter and unsuccessfully add module
(2), described window filter unsuccessfully adds module (2) output time signal (4) to described high reproduction clock module (5)；
Temporal information is carried out keeping time and reappearing by described high reproduction clock module (5), described high reproduction clock module (5)
The temporal information processed is exported respectively to described ntp server by serial ports (19) by described driving module (18)
Module (13), described ntp server module (14), described TOD Time of Day follower (15) and described voice
Conversion module (6)；Described ntp server module (13,14) is clothes when connected computer provides NTP school
Business；Time signal is supplied to outside string by 232 order wires (16) by described TOD Time of Day follower (15)
Jaws equipment；Described phonetic modification module (6) is put (8) by described sound and is quoted with voice by time of day；Institute
State out log pattern (7) unsuccessfully to add at described window filter and gather and store institute on the delivery outlet (4) of module (2)
Success or failure state when stating the school of NTP Client module (1), the most also gathers and stores described ntp server module
(13,14) provide NTP school success or failure state constantly to Intranet；When described panel display module (9) shows date
Between and state during school, the content that described panel display module (9) is shown by described button (10) is adjusted；
Described window filter unsuccessfully adds module (2) by analyzing the institute from 232 serial ports (3) for single-chip microcomputer (40)
When stating the school of NTP Client module (1), frequency when status word and school, determines window start and the window of window filter
Mouth length, the time signal simultaneously described high reproduction clock module (5) transmitted is as the time scale base of window
Standard, when when NTP school, success and the time signal error that filters out are near 1000 microseconds, is just considered as
Widow time signal is exported, if excessive i.e. output of error is unsuccessfully pointed out, simultaneously right by 232 serial ports (3)
During described NTP Client module (1) amendment school, frequency is frequent, adds interim NTP and synchronizes, success during school
After when recovering original school again frequency dough-making powder plate show.
The time synchronism apparatus of security isolation the most according to claim 1, it is characterised in that described height
Reproduction clock module (5) including: single-chip microcomputer (43) and connected RTC circuit；When described RTC circuit includes
Clock circuit chip (44) and connected crystal oscillator, electric capacity, rechargeable battery；Described single-chip microcomputer (43) receives two-way
Time signal, a road is unsuccessfully to be added the time signal (4) that module (2) exports, another road by described window filter
It is by 232 level conversion by the TOD time signal (12) in external time source；Single-chip microcomputer (43) is by the time
Information passes to described clock circuit chip (44), carries out keeping time and reappearing to the time；Described single-chip microcomputer (43) is with string
Frequency byte, described single-chip microcomputer when state byte, school when mouthful form output date time signal and NTP school
(43) by output serial ports (19) through described driving module (18) respectively give described ntp server module (13,14),
Described TOD Time of Day follower (15) and described phonetic modification module (6) output signal (45)；During described TOD
Between date follower (15) time signal is supplied to serial equipment by 232 order wires (16)；Described single-chip microcomputer
(43) by universal serial bus, display information is delivered to panel display module (9), by button (10), display content is entered
Row sum-equal matrix；RTC clock chip (44) given immediately by described single-chip microcomputer (43) after reading widow time signal (4), make
The second phase place of RTC clock chip internal is reset, the frequency at a high speed of the time slot before next second is at hand
The second data of numerous reading described RTC clock chip (44), until reading the new second, it is whole that side gives output serial ports form
Date-time.
The time synchronism apparatus of security isolation the most according to claim 1, it is characterised in that described in enter
Go out log pattern (7), including: single-chip microcomputer (64) and serial non-volatile storage chip (41)；Described single-chip microcomputer 64
Delivery outlet (4) the described NTP Client module (1) of upper collection unsuccessfully adding module (2) at described window filter accesses
Success or failure status data during outer network school, gathers described ntp server module (13) also by serial ports (42) right simultaneously
Intranet provides NTP school success or failure status data constantly, is sent by both success or failure status datas by universal serial bus
Store to serial non-volatile storage chip (41).
The time synchronism apparatus of security isolation the most according to claim 3, it is characterised in that described NTP
Client modules (1) accesses outer network school success or failure status data constantly less than 16 bytes；NTP school is provided to Intranet
The big record data of success or failure state constantly are less than 32 bytes；Outer computer can be by 232 serial ports to described
Enter out log pattern (7) to send instructions, transfer and check success or failure record into going out daily record, search each equipment of system long-time
The holding situation synchronized.
The time synchronism apparatus of security isolation the most according to claim 1, it is characterised in that NTP visitor
Family end module (1) including: network interface (20), NTP Client processor (21), frame information record component (23)
With instruction input module (25)；The outer net signal (11) received is carried out at isolation and signal by described network interface (20)
Reason, forms digital signal and enters described NTP Client processor (21)；Described NTP Client processor (21)
Communicate with described frame information record component (23) and described instruction input module (25) respectively.
The time synchronism apparatus of security isolation the most according to claim 5, it is characterised in that described frame
Package (23) receives the frame information that described NTP Client processor (21) sends, described frame information bag
Frequency byte, date-time code and postamble when including frame head, state byte, school.
The time synchronism apparatus of security isolation the most according to claim 6, it is characterised in that status word
Joint represent this frame be by output during the normal school of frequency during school or the failure when school, unsuccessfully add, middle recursion
Output in the state of output and middle recursion；During school, frequency byte is by second, minute, hour and natural law data
It is arranged in order in 8 Bit datas of a byte, indicates school with the unit of time of four magnitude differences respectively
Time action interval；Date-time code is the arrangement block of Time of Day data.
The time synchronism apparatus of security isolation the most according to claim 5, it is characterised in that described finger
Make input module (25) that described NTP Client processor (21) is carried out the operation of frame information setting；Described frame is believed
Breath includes frequency byte when frame head, state byte, school, date-time code and postamble.
The time synchronism apparatus of security isolation the most according to claim 5, it is characterised in that described NTP
Client end processor (21) is provided with serial ports (22,24)；Described NTP Client processor (21) passes through serial ports (22)
Communicate with described frame information record component (23)；Described NTP Client processor (21) passes through serial ports (24)
Communicate with described instruction input module (25).
The time synchronism apparatus of security isolation the most according to claim 1, it is characterised in that described
Ntp server module includes: network interface (30) and ntp server processor (31)；Described ntp server
Processor (31) receives the time of day (35) exported from height reproduction clock module (5)；Described NTP services
Device processor (31) output information (33) feeds out log pattern (7)；Described information (33) including: Intranet accesses and sets
When standby IP address and port numbers, school, set a date the phase constantly in success or failure mark and school.
The time synchronism apparatus of 11. security isolations according to claim 10, it is characterised in that described
Ntp server processor (31) is provided with serial ports (32,34)；Described ntp server processor (31) passes through serial ports
(32) time of day (35) exported from height reproduction clock module (5) is received；Described ntp server processes
Device (31) feeds out log pattern (7) by serial ports (32) output information (33).
The time synchronism apparatus of 12. security isolations according to claim 1, it is characterised in that described
Panel display module (9) is display, state when display input and the date-time data of output and NTP school
The information of node when frequency word and school next time when word, school；Described button (10) including: four direction button, right
The display content of described display is adjusted.
The time synchronism apparatus of 13. security isolations according to claim 12, it is characterised in that described
Panel display module (9) and described button (10) composition display control panel；During described NTP school, status word includes:
Failure and unsuccessfully add the byte of state during normal, school when representing school respectively.
The time synchronism apparatus of 14. security isolations according to claim 1, it is characterised in that described
Phonetic modification module (6) including: single-chip microcomputer (46) and low-frequency filter (48), described single-chip microcomputer (46) is according to input
Time signal (19), output digital pulsewidth modulation ripple (47) give described low-frequency filter (48), described low frequency
Digital pulsewidth modulation ripple (47) is processed and will obtain analog waveform (49) and is delivered to institute by wave filter (48)
State sound and put (8).
The time synchronism apparatus of 15. security isolations according to claim 1, it is characterised in that described
Sound puts (8), including: described sound puts chip (50), loudspeaker (53), volume control potentiometer (51) and closing switch (52),
Described sound is put after the analog waveform (49) received is amplified by chip (50) and is transferred to described loudspeaker (53) sounding, described sound
Amount regulator potentiometer (51) and described closing switch (52) are put chip (50) respectively and are connected, to speech volume with described sound
It is adjusted or closes.
The time synchronism apparatus of 16. security isolations according to claim 1, it is characterised in that monolithic
The model of machine (40,43,64) is STC11F04E；The model of described clock circuit chip (44) is DS1302；
Described single-chip microcomputer (46) uses model to be the chip of STC12C5628, and low-frequency filter (48) is RC low-pass filtering
Device；Serial non-volatile storage chip (41) uses model to be the chip of M25P128；Described sound puts chip (50)
Model be HT4836.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181306.2A CN102710409B (en) | 2012-06-04 | 2012-06-04 | A kind of time synchronism apparatus of security isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181306.2A CN102710409B (en) | 2012-06-04 | 2012-06-04 | A kind of time synchronism apparatus of security isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102710409A CN102710409A (en) | 2012-10-03 |
| CN102710409B true CN102710409B (en) | 2016-09-21 |
Family
ID=46902982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210181306.2A Active CN102710409B (en) | 2012-06-04 | 2012-06-04 | A kind of time synchronism apparatus of security isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102710409B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI429165B (en) | 2011-02-01 | 2014-03-01 | Fu Da Tong Technology Co Ltd | Method of data transmission in high power |
| US9831687B2 (en) | 2011-02-01 | 2017-11-28 | Fu Da Tong Technology Co., Ltd. | Supplying-end module for induction-type power supply system and signal analysis circuit therein |
| US9600021B2 (en) | 2011-02-01 | 2017-03-21 | Fu Da Tong Technology Co., Ltd. | Operating clock synchronization adjusting method for induction type power supply system |
| US8941267B2 (en) | 2011-06-07 | 2015-01-27 | Fu Da Tong Technology Co., Ltd. | High-power induction-type power supply system and its bi-phase decoding method |
| US10038338B2 (en) | 2011-02-01 | 2018-07-31 | Fu Da Tong Technology Co., Ltd. | Signal modulation method and signal rectification and modulation device |
| US10056944B2 (en) | 2011-02-01 | 2018-08-21 | Fu Da Tong Technology Co., Ltd. | Data determination method for supplying-end module of induction type power supply system and related supplying-end module |
| TWI493825B (en) * | 2013-02-04 | 2015-07-21 | Fu Da Tong Technology Co Ltd | Operating clock synchronization adjusting method and synchronous data transmitting for wireless power system |
| US9671444B2 (en) | 2011-02-01 | 2017-06-06 | Fu Da Tong Technology Co., Ltd. | Current signal sensing method for supplying-end module of induction type power supply system |
| US9075587B2 (en) | 2012-07-03 | 2015-07-07 | Fu Da Tong Technology Co., Ltd. | Induction type power supply system with synchronous rectification control for data transmission |
| US9628147B2 (en) | 2011-02-01 | 2017-04-18 | Fu Da Tong Technology Co., Ltd. | Method of automatically adjusting determination voltage and voltage adjusting device thereof |
| US9048881B2 (en) | 2011-06-07 | 2015-06-02 | Fu Da Tong Technology Co., Ltd. | Method of time-synchronized data transmission in induction type power supply system |
| CN104993899A (en) * | 2015-06-23 | 2015-10-21 | 浪潮软件集团有限公司 | Time synchronization method, device and system |
| CN114859691B (en) * | 2022-03-25 | 2023-12-12 | 北京轩宇信息技术有限公司 | Wireless unidirectional time service system and method with safety isolation |
| CN115242432B (en) * | 2022-06-13 | 2023-05-16 | 中国电子科技集团公司第三十研究所 | Cross-domain time synchronization device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006277514A (en) * | 2005-03-30 | 2006-10-12 | Nec Corp | Time synchronizing device |
| CN1964352A (en) * | 2006-09-22 | 2007-05-16 | 华为技术有限公司 | A method and device to improve clock precision |
| CN101425891A (en) * | 2008-12-09 | 2009-05-06 | 中兴通讯股份有限公司 | Time synchronization method, system and customer terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8971154B2 (en) * | 2009-07-14 | 2015-03-03 | Igrs Engineering Lab Ltd. | Synchronization of system time in electronic device |
-
2012
- 2012-06-04 CN CN201210181306.2A patent/CN102710409B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006277514A (en) * | 2005-03-30 | 2006-10-12 | Nec Corp | Time synchronizing device |
| CN1964352A (en) * | 2006-09-22 | 2007-05-16 | 华为技术有限公司 | A method and device to improve clock precision |
| CN101425891A (en) * | 2008-12-09 | 2009-05-06 | 中兴通讯股份有限公司 | Time synchronization method, system and customer terminal |
Non-Patent Citations (1)
| Title |
|---|
| 基于NTP局域网时间同步系统研究与实现;谭丽;《中国优秀硕士学位论文全文数据库信息科技辑》;20100315(第3期);第3-24页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102710409A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102710409B (en) | A kind of time synchronism apparatus of security isolation | |
| CN104503306B (en) | Multi-camera synchronous triggering device and control method | |
| CN101561356B (en) | Civil engineering structural remote health monitoring system | |
| CN104064007B (en) | Centralized meter reading system | |
| CN110928176B (en) | Multifunctional time service equipment supporting multiple time service technologies | |
| CN104408009A (en) | System and method for acquiring, processing and verifying method multi-channel interference signal | |
| CN201828585U (en) | Portable transformer substation synchronous time ticking and SOE signal generator | |
| CN104408008A (en) | Multi-channel interference signal acquiring, processing and verifying method | |
| CN102621954A (en) | Self-adaptive multi-signal-source time synchronization card device for smart grid and message analysis system | |
| CN202372570U (en) | Three-phase four-wire multifunctional electric energy meter | |
| CN209543097U (en) | Data collection system | |
| CN105610545A (en) | FT3 self-adaptive decoding system and method based on FPGA | |
| CN205583839U (en) | Computer integrated protection measurement and control device of transformer substation | |
| CN202486606U (en) | Adaptive multi-signal-source timing equipment in intelligent power grid and report analysis system | |
| CN203260219U (en) | Simulated merging unit simulation device | |
| CN205810095U (en) | A kind of 32 Three-channel data harvesters with double wireless network | |
| CN203278863U (en) | IEC60044 message acquisition board card based on CRIO (Core-Router Integrated Overlay) platform | |
| CN110418403B (en) | 35kV transformer substation data recording system and method based on wireless network | |
| CN102393221A (en) | Automatic monitoring system for humiture of warehouse | |
| CN104536923B (en) | A kind of interference signal collection of multichannel and processing checking system | |
| CN201741018U (en) | Single-plate oscillograph capable of integrating distributing system through parallel bus | |
| CN201344861Y (en) | Remote monitoring system for health status of civil engineering structure | |
| CN203225793U (en) | Multi-display terminal interactive information data check and time delay detection device | |
| CN205068068U (en) | Distributing type time synchronizing data gathers general module based on ethernet transmission | |
| CN106936530A (en) | A kind of wireless sensing wind load monitoring system for realizing multi-measuring point synchronous acquisition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |