CN204993348U - Network time service server - Google Patents
Network time service server Download PDFInfo
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- CN204993348U CN204993348U CN201520821261.XU CN201520821261U CN204993348U CN 204993348 U CN204993348 U CN 204993348U CN 201520821261 U CN201520821261 U CN 201520821261U CN 204993348 U CN204993348 U CN 204993348U
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- transmission signal
- way transmission
- embedded controller
- bus transceiver
- interface unit
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Abstract
The utility model provides a network time service server. The utility model relates to a network time service server. Satellite receiver one -way transmission signal to embedded controller, the embedded controller one -way transmission signal extremely the display screen, embedded controller one -way transmission signal to interface unit, interface unit one -way transmission signal to time service service request equipment, embedded controller include compatible microcontroller, compatible microcontroller through serial peripheral hardware interface SPI bus and real -time clock chip bidirectional signal, compatible microcontroller and the two -way control connection that resets of watchdog chip, compatible microcontroller number of pass certificate and address bus one -way connection, compatible microcontroller through I one -way connection of asynchronous receiving and dispatching transmitter UART the interface unit, compatible microcontroller by the satellite receiver through II one -way connections of asynchronous receiving and dispatching transmitter UART. The utility model is used for network time service server.
Description
Technical field
The utility model relates to a kind of time calibration in network server.
Background technology
Highway needs each server, computer accurate, consistent with the time of airfield equipment system in the business such as service, monitoring, command scheduling.Due to each website remote geographic location of highway, utilize satellite carry out local area network (LAN) in website, the time service of industry computer system, pair time be a kind of effective way.Highway system feature be website quantity many, stand in moderate, the multiple network type of network small scale, required precision depositing.But the server of satellite network time service is in the market mainly for medium-and-large-sized information system, provide high accuracy, large scale network time service service, time service Circuits System is complicated, and cost is higher.
Summary of the invention
The purpose of this utility model is to provide a kind of satellite receiver matching embedded type controller, interface unit of utilizing and uses, make highway website Mechatronic Systems at lower cost, better carry out receiving satellite signal, support multiple interfaces mode, meet time precision requirement, a kind of time calibration in network server easy to use.
above-mentioned object is realized by following technical scheme:
A kind of time calibration in network server, its composition comprises: antenna, display screen, described antenna one-way transmission signal is to satellite receiver, described satellite receiver one-way transmission signal is to embedded controller, described embedded controller one-way transmission signal is to described display screen, described embedded controller one-way transmission signal is to interface unit, and described interface unit one-way transmission signal is to time service service request equipment; Described embedded controller comprises compatible microcontroller, described compatible microcontroller is by serial peripheral equipment interface SPI bus and real-time timepiece chip two-way transmission signals, described compatible microcontroller and watchdog chip two-way reset control connection, described compatible microcontroller is connected by data and address bus are unidirectional, described compatible microcontroller is by the interface unit described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART I, and described compatible microcontroller is passed through the unidirectional connection of asynchronous receiving-transmitting transmitter UART II by satellite receiver.
Described a kind of time calibration in network server, described satellite receiver comprises surface band bandpass filter, described surface band bandpass filter one-way transmission signal is to radio frequency amplifier, described radio frequency amplifier one-way transmission signal is to Baseband processor, and described Baseband processor is by the embedded controller described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART II.
Described a kind of time calibration in network server, display circuit in described display screen comprises data/address bus I and address bus, described data/address bus I one-way transmission signal is to bus transceiver I, described bus transceiver I passes through data/address bus II one-way transmission signal to bus transceiver II, described bus transceiver II selects holding wire one-way transmission signal to 16 Digital sum pipe by section, described address bus one-way transmission signal is to bus transceiver III, and described bus transceiver III selects holding wire one-way transmission signal to 16 described Digital sum pipes by position.
Described a kind of time calibration in network server, described interface unit receives the signal of described embedded controller by asynchronous receiving-transmitting transmitter UART I, described interface unit comprises single supply level transferring chip, differential bus transceiver and ARM controller, and described asynchronous receiving-transmitting transmitter UART I one-way transmission signal is to described power level conversion chip, described differential bus transceiver and described ARM controller;
Described power level conversion chip passes through serial ports one-way transmission signal to time service service request equipment A.
Described differential bus transceiver passes through 485 one-way transmission signal to time service service request equipment B.
Described ARM controller one-way transmission signal is isolated to network voltage, and the network interface one-way transmission signal of described ethernet controller is to time service service request equipment C.
beneficial effect:
1. the Main Function of satellite receiver of the present utility model receives by antenna the radio wave that satellite sends, and carries out filtering, amplification and down-converted, then carry out digital-to-analogue conversion and demodulation to the analog signal after frequency conversion to it.
2. resolution digital information of the present utility model obtains lock in time and calibrates with local clock.
3. sound surface band bandpass filter of the present utility model, realizes one-way transmission and reverse isolation, prevents the interference signal beyond receive frequency from entering and prevents local oscillator (or transmitting) signal from being leaked by reception antenna.
accompanying drawing illustrates:
Accompanying drawing 1 is System Working Principle block diagram of the present utility model.
Accompanying drawing 2 is embedded controller operation principle block diagrams of the present utility model.
Accompanying drawing 3 is satellite receiver operation principle block diagrams of the present utility model.
Accompanying drawing 4 is display circuit operation principle block diagrams of the present utility model.
Accompanying drawing 5 is interface unit operation principle block diagrams of the present utility model.
embodiment:
embodiment 1
A kind of time calibration in network server, its composition comprises: antenna, display screen, described antenna one-way transmission signal is to satellite receiver, described satellite receiver one-way transmission signal is to embedded controller, described embedded controller one-way transmission signal is to described display screen, described embedded controller one-way transmission signal is to interface unit, and described interface unit one-way transmission signal is to time service service request equipment, described embedded controller comprises compatible microcontroller (W77E058A type 8051), described compatible microcontroller is by serial peripheral equipment interface SPI bus and (DS1302) real-time timepiece chip two-way transmission signals, described compatible microcontroller and watchdog chip (MAX813) two-way reset control connection, described compatible microcontroller is connected by data and address bus are unidirectional, described compatible microcontroller is by the interface unit described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART I, described compatible microcontroller is passed through the unidirectional connection of asynchronous receiving-transmitting transmitter UART II by satellite receiver.
Embedded controller adopts the compatible microcontroller of nuvoton company W77E058A type 8051 to be core, utilizes and includes 32KBFlashEPROM, and RAM data storage on 1KB sheet, realizes microprogram storage, data operation and IO and controls; And provided by MAX813 watchdog chip power on, reset in power down and supply power voltage decline situation exports, when system exception, restart controller ensures the normal work of system; Rear normal Time Calculation is connected for ensureing to lose with satellite, embedded controller introduces DALLAS company DS1302 real-time timepiece chip, use after system power failure powered battery still can continue to year, month, day, week, time, minute, second carries out timing, realizing leap year compensate function, providing required time benchmark for losing when satellite connects.
embodiment 2
A kind of time calibration in network server described in embodiment 1, described satellite receiver comprises surface band bandpass filter (GA1575T2A), described surface band bandpass filter one-way transmission signal is to radio frequency amplifier (HMC-C077), described radio frequency amplifier one-way transmission signal is to Baseband processor (NJ1030A), and described Baseband processor is by the embedded controller described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART II.
Adopt GA1575T2A sound surface band bandpass filter, realize one-way transmission and reverse isolation, prevent the interference signal beyond receive frequency from entering and prevent local oscillator (or transmitting) signal from being leaked by reception antenna; 1575.42MHz is remained on, bandwidth 2MHz by signal center frequency after bandpass filtering; HMC-C077 radio frequency amplifier provides the gain of 14dB, and realize being low to moderate the noise factor of 4.5dB and the power output up to+22dBm, enough modulation accuracies are realized in satellite reception unit structure, I/O matching internal 50 Ω, through every directly, provide stable performance, the loss of compensating band pass filter, improves the signal to noise ratio of Received signal strength simultaneously; Utilize V8Sparc32 position RISC kernel, memory on NJ1030A Baseband processor sheet, reception amplifier outputs signal, data are received through digital intermediate frequency filtering acquisition, after being resolved by GPS locator data, in conjunction with response time compensation deals, by communication interface output satellite link information to embedded controller.
embodiment 3
A kind of time calibration in network server described in embodiment 1, display circuit in described display screen comprises data/address bus I and address bus, described data/address bus I one-way transmission signal is to bus transceiver I (74hc138), described bus transceiver I passes through data/address bus II one-way transmission signal to bus transceiver II (74hc245), described bus transceiver II selects holding wire one-way transmission signal to 16 Digital sum by section, described address bus one-way transmission signal is to bus transceiver III (74hc574), described bus transceiver III selects holding wire one-way transmission signal to 16 described Digital sum pipes by position.
Display unit adopts multi-disc 74hc138 bus transceiver, 74hc245 bus transceiver, 74hc574 bus transceiver and 16 Digital sum pipes to realize comprising the Presentation Function of year, month, day, hour, minute, second and equipment running status; The logical circuit utilizing 74hc138 bus transceiver, 74hc245 bus transceiver and 74hc574 bus transceiver to form converts the control of 16 Digital sum pipes to virtual external memory space, achieve the fast access of embedded control unit, data/address bus is delivered to 74hc574 bus transceiver through the isolation of 74hc245 bus transceiver and is latched digital pipeline section and select signal, address bus extends to 16 through 74hc138 bus transceiver provides position to select signal to charactron, after section selects signal and position to select signal to export, the corresponding section of selected charactron is lighted.
embodiment 4
A kind of time calibration in network server described in embodiment 1, described interface unit receives the signal of described embedded controller by asynchronous receiving-transmitting transmitter UART I, described interface unit comprises single supply level transferring chip (MAX232), differential bus transceiver (SN75LBC184) and ARM controller (LM3S6911), and described asynchronous receiving-transmitting transmitter UART I one-way transmission signal is to described power level conversion chip, described differential bus transceiver and described ARM controller;
Described power level conversion chip passes through serial ports (RS-232) one-way transmission signal to time service service request equipment A.
Described differential bus transceiver passes through 485 bus one-way transmission signal to time service service request equipment B.
Described ARM controller one-way transmission signal is to network voltage isolation (PM44-11), and the network interface one-way transmission signal of described ethernet controller is to time service service request equipment C.
For convenience of providing time service service to distinct device, in system, provide the time service of two-way serial ports, 485 bus time service and time calibration in networks respectively at interface unit; Embedded controller imports time service information into interface unit each several part by asynchronous receiving-transmitting transmitter UART I, uses single supply level transferring chip MAX232 to realize two group standard RS-232 serial ports and exports; The differential data that the data transaction of asynchronous receiving-transmitting transmitter UART I becomes to meet within the scope of SN5176 industry standard by differential bus transceiver SN75LBC184; Ethernet interface selects ARM controller LM3S6911, uses inner ethernet controller to complete ethernet data link layer and physical layer and controls, built-in SNTP service and ICP/IP protocol stack, to enable on sheet 2K byte cache as Ethernet buffering area deal with data; The information during school that ethernet controller reception main controller sends, data in meshwork buffering district, the SNTP service data completed is by inner ICP/IP protocol stack, send the packet following the SNTP agreement meeting RFC2030 standard, in PM44-11 network voltage isolation access to LAN, mail to destination address.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection range of the present utility model.
Claims (4)
1. a time calibration in network server, its composition comprises: antenna, display screen, it is characterized in that: described antenna one-way transmission signal is to satellite receiver, described satellite receiver one-way transmission signal is to embedded controller, described embedded controller one-way transmission signal is to described display screen, described embedded controller one-way transmission signal is to interface unit, and described interface unit one-way transmission signal is to time service service request equipment; Described embedded controller comprises compatible microcontroller, described compatible microcontroller is by serial peripheral equipment interface SPI bus and real-time timepiece chip two-way transmission signals, described compatible microcontroller and watchdog chip two-way reset control connection, described compatible microcontroller is connected by data and address bus are unidirectional, described compatible microcontroller is by the interface unit described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART I, and described compatible microcontroller is passed through the unidirectional connection of asynchronous receiving-transmitting transmitter UART II by satellite receiver.
2. a kind of time calibration in network server according to claim 1, it is characterized in that: described satellite receiver comprises surface band bandpass filter, described surface band bandpass filter one-way transmission signal is to radio frequency amplifier, described radio frequency amplifier one-way transmission signal is to Baseband processor, and described Baseband processor is by the embedded controller described in the unidirectional connection of asynchronous receiving-transmitting transmitter UART II.
3. a kind of time calibration in network server according to claim 1, it is characterized in that: the display circuit in described display screen comprises data/address bus I and address bus, described data/address bus I one-way transmission signal is to bus transceiver I, described bus transceiver I passes through data/address bus II one-way transmission signal to bus transceiver II, described bus transceiver II selects holding wire one-way transmission signal to 16 Digital sum pipe by section, described address bus one-way transmission signal is to bus transceiver III, described bus transceiver III selects holding wire one-way transmission signal to 16 described Digital sum pipes by position.
4. a kind of time calibration in network server according to claim 1, it is characterized in that: described interface unit receives the signal of described embedded controller by asynchronous receiving-transmitting transmitter UART I, described interface unit comprises single supply level transferring chip, differential bus transceiver and ARM controller, and described asynchronous receiving-transmitting transmitter UART I one-way transmission signal is to described power level conversion chip, described differential bus transceiver and described ARM controller;
Described power level conversion chip passes through serial ports one-way transmission signal to time service service request equipment A;
Described differential bus transceiver passes through 485 one-way transmission signal to time service service request equipment B;
Described ARM controller one-way transmission signal is isolated to network voltage, and the network interface one-way transmission signal of described ethernet controller is to time service service request equipment C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520821261.XU CN204993348U (en) | 2015-10-23 | 2015-10-23 | Network time service server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520821261.XU CN204993348U (en) | 2015-10-23 | 2015-10-23 | Network time service server |
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| Publication Number | Publication Date |
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| CN204993348U true CN204993348U (en) | 2016-01-20 |
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| CN201520821261.XU Expired - Fee Related CN204993348U (en) | 2015-10-23 | 2015-10-23 | Network time service server |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448777A (en) * | 2019-09-05 | 2021-03-05 | 福建灵信信息科技有限公司 | Multifunctional wireless signal detection method |
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2015
- 2015-10-23 CN CN201520821261.XU patent/CN204993348U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448777A (en) * | 2019-09-05 | 2021-03-05 | 福建灵信信息科技有限公司 | Multifunctional wireless signal detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20201023 |