CN212364805U - Automatic alignment device for wireless time service signals - Google Patents
Automatic alignment device for wireless time service signals Download PDFInfo
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- CN212364805U CN212364805U CN202022355954.8U CN202022355954U CN212364805U CN 212364805 U CN212364805 U CN 212364805U CN 202022355954 U CN202022355954 U CN 202022355954U CN 212364805 U CN212364805 U CN 212364805U
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Abstract
The utility model discloses a wireless time service signal automatic alignment device belongs to time service technical field, needs the manual work to rely on ear hearing to distinguish and aim at the problem among the solution current BPM time service technique. The method comprises the following steps: a wireless unit: the system comprises a base station, a modulation BPM wireless time service carrier signal and a data processing unit, wherein the modulation BPM wireless time service carrier signal is used for receiving a modulation BPM wireless time service carrier signal sent by a shore-based time service station; a demodulation unit: the device is used for demodulating the modulated BPM wireless time service carrier signal to obtain a BPM time service modulation signal; a signal acquisition unit: the device is used for carrying out digital processing on the BPM time service modulation signal to obtain a BPM digital waveform signal; an information processing unit: the system is used for identifying the BPM digital waveform signal according to the time pattern, acquiring an effective half-hour synchronization or whole-hour synchronization trigger signal, and calibrating the local system time; a display unit: for displaying a system time; a power supply unit: for supplying power. The utility model provides an automatic time service and time alignment technique outside being independent of satellite navigation has important military meaning and practical value.
Description
Technical Field
A wireless time signal automatic alignment device is used for automatic alignment of time signals and belongs to the technical field of time devices.
Background
At present, although the time system technology is continuously developed, BPM long wave time service is sent based on a shore-based time service station, time service is carried out on time management equipment through remote information, and due to the independence and high reliability of the shore-based time service station, better equipment is not provided for replacing the time management equipment as one of the bottom-guaranteeing means of the time system technology. However, the conventional time service method has the following disadvantages: the method needs the hearing of a person to distinguish the sound at the time of the whole hour or the whole second of the time service, and then the clock is started at the time of the whole hour or the whole second of the half hour after the sound is distinguished (namely, the time alignment is manually realized). Therefore, the research on the automatic aligning device of the wireless time service signal does not need to be distinguished by human hearing, automatically carries out time alignment according to the time service information, improves the automation degree and the time service precision, and has very important significance and value in the era of 'e navigation'.
SUMMERY OF THE UTILITY MODEL
Need the human hearing to go to distinguish the sound of time service integer or half the integer second constantly among the prior art, be difficult to the problem that accurate alignment and degree of automation are low, the utility model provides a wireless time service signal automatic alignment device, its aim at: improve degree of automation, improve the time service precision.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic alignment device for wireless time service signals, comprising:
an antenna unit: the system comprises a base station, a modulation BPM wireless time service carrier signal and a data processing unit, wherein the modulation BPM wireless time service carrier signal is used for receiving a modulation BPM wireless time service carrier signal sent by a shore-based time service station;
a demodulation unit: the device is used for demodulating the modulated BPM wireless time service carrier signal to obtain a BPM time service modulation signal;
a signal acquisition unit: the device is used for carrying out digital processing on the BPM time service modulation signal to obtain a BPM digital waveform signal;
a signal processing unit: the system is used for identifying the BPM digital waveform signal according to the time pattern, acquiring an effective half-hour synchronous or whole-hour synchronous signal and calibrating the local system time;
a display unit: for displaying a system time;
a power supply unit: used for supplying power to the demodulation unit, the signal acquisition unit, the display unit and the signal processing unit.
After the technical scheme is adopted, the antenna unit receives and receives a modulated BPM wireless time service carrier signal sent by a shore-based time service station, then the demodulation unit demodulates the modulated BPM wireless time service carrier signal to obtain a BPM time service modulated signal, the signal acquisition unit carries out digital processing on the BPM time service modulated signal to obtain a BPM digital waveform signal, the signal processing unit identifies the BPM digital waveform signal according to a time pattern to obtain an effective half-hour synchronous or hour synchronous signal, calibrates local system time, and synchronously displays the system time on the display unit. Adopt the utility model discloses, need not go to distinguish the sound of time service integer or half the integer second moment then manually carry out time alignment with the hearing through the people, can carry out time alignment according to the time service information automatically, improve degree of automation, improve the time service precision.
Preferably, the signal processing unit is connected with a control unit, and the control unit is connected with a power supply unit.
After the preferred scheme is adopted, the control unit can carry out the operations of startup, shutdown and reset on the time service device.
Preferably, the signal processing unit is provided with a communication interface for connecting with other time system systems.
With this preferred arrangement, the signal processing unit can provide time alignment to other timing systems at full second intervals through the communication interface.
Preferably, the antenna unit is a short-wave antenna with a contraction function.
Preferably, the display unit is connected with the signal processing unit and the power supply unit respectively.
Compared with the prior art, the utility model, its beneficial effect shows:
1. the antenna unit receives and receives a modulated BPM wireless time service carrier signal sent by a shore-based time service station, then the demodulation unit demodulates the modulated BPM wireless time service carrier signal to obtain a BPM time service modulated signal, the signal acquisition unit carries out digital processing on the BPM time service modulated signal to obtain a BPM digital waveform signal, the signal processing unit identifies the BPM digital waveform signal according to a time pattern to obtain an effective half-hour synchronous or whole-time synchronous signal, calibrates local system time, and synchronously displays the system time on the display unit. Adopt the utility model discloses, need not go to distinguish the sound of time service integer or half the integer second moment then manually carry out time alignment with the hearing through the people, can carry out time alignment according to the time service information automatically, improve degree of automation, improve the time service precision.
2. The control unit can be used for carrying out on-off and resetting operations on the time service device.
3. The signal processing unit may provide time alignment to other timing systems at full second intervals through the communication interface.
Drawings
Fig. 1 is a schematic view of the time service process of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
An automatic alignment device for wireless time service signals, comprising:
an antenna unit: the system comprises a base station, a modulation BPM wireless time service carrier signal and a data processing unit, wherein the modulation BPM wireless time service carrier signal is used for receiving a modulation BPM wireless time service carrier signal sent by a shore-based time service station;
a demodulation unit: the device is used for demodulating the modulated BPM wireless time service carrier signal to obtain a BPM time service modulation signal;
a signal acquisition unit: the device is used for carrying out digital processing on the BPM time service modulation signal to obtain a BPM digital waveform signal;
a signal processing unit: the system is used for identifying the BPM digital waveform signal according to the time pattern, acquiring an effective half-hour synchronous or whole-hour synchronous signal and calibrating the local system time;
a display unit: for displaying a system time;
a power supply unit: used for supplying power to the demodulation unit, the signal acquisition unit, the display unit and the signal processing unit.
A control unit: the device is used for carrying out switching on and off and resetting operations on the whole device.
The antenna unit is connected with the demodulation unit, the signal acquisition unit, the signal processing unit and the display unit in sequence, the power supply unit is connected with the demodulation unit, the signal acquisition unit, the display unit and the signal processing unit respectively, and the control unit is connected with the signal processing unit and the power supply unit respectively. And the signal processing unit is provided with a communication interface for connecting with other time system systems and is used for providing time alignment for the other time system systems.
In this embodiment, the antenna unit is a short wave antenna with a contraction function, the number of the sections is 11, the receiving range is 2 MHz-50 MHz, the contraction range is 24CM-150CM, and the maximum diameter is 11 mm. The demodulation unit is a demodulation unit commonly used in the art and is not described herein.
In this embodiment, the signal acquisition unit is a 1-channel 16-bit ADC, and has FPGA and DSP signal processing resources, and a frequency range: 66.8MHz-88.8 MHz.
In this embodiment, the signal processing unit includes a DDC controller, a filtering unit controlled by the DDC controller, and an AM signal demodulation unit, where the filtering unit is configured to perform filtering processing on a BPM digital waveform signal; the AM signal demodulation unit is used for demodulating the signals processed by the filtering unit to obtain BPM audio signals, the signal acquisition unit is used for carrying out digital processing on the BPM time service modulation signals to obtain BPM digital waveform signals, the signal processing unit is used for identifying the BPM digital waveform signals according to time pattern to obtain effective half-hour synchronization or hour synchronization signals, meanwhile, system time synchronization is aligned to half-hour or 1 hour, then time precision maintenance is carried out by a high-precision real-time clock (RTC) of the signal processing unit, and time is output at intervals of a whole second through an RS232 serial port to provide accurate time reference for other time system systems.
Examples
The utility model discloses possess the function of the wireless time service carrier signal of modulation BPM who broadcasts of the short wave time service platform of receiving the shanxi astronomical table of China academy of sciences, can receive four signals of 2.5MHz, 5MHz, 10MHz and 15 MHz. The antenna unit (namely a stretching antenna in figure 1) receives and modulates a BPM wireless time service carrier signal, the modulated BPM wireless time service carrier signal is demodulated by a demodulation unit to obtain a BPM time service modulation signal, the signal acquisition unit carries out digital processing on the BPM time service modulation signal to obtain a BPM digital waveform signal, the signal processing unit identifies the BPM digital waveform signal according to a time signal pattern to obtain an effective half-hour synchronization or whole-hour synchronization signal, simultaneously aligns system time synchronization to half hour or whole hour, then carries out time precision maintenance by a high-precision real-time clock (RTC) of the signal processing unit, synchronously displays on an LCD screen (namely a display unit in figure 1), outputs at intervals of whole second through a communication interface, and provides time alignment for other system systems (namely time output in figure 1).
Further describing the time alignment mechanism of the embodiment, the system time error maintained by the high-precision real-time clock RTC of the signal processing unit generally does not exceed 5 minutes, for example, when the system time 2020-08-0803: 05:00 receives a half-hour or full-hour synchronization signal sent by the BPM service desk, the system time is automatically synchronized to 2020-08-0803: 00:00, and the full-hour alignment is determined; if the system time 2020-08-0803: 35:00 receives a half-hour or full-time synchronization signal sent by a BPM time service station, the system time is automatically synchronized to 2020-08-0803: 30:00, and the alignment is judged to be half an hour; the future system time accuracy is maintained by the high accuracy real time clock RTC of the signal processing unit until the next calibration.
In this embodiment, the display unit is an LCD display screen, and the LCD screen is used for synchronously displaying the time output by the RS232 serial port at the interval of a second.
In this embodiment, the power supply unit is a 4-string 4-parallel battery pack formed by commercially available 18650 batteries, and is fully charged with 16.8V and 10400mAH in capacity. Calculated according to the total power consumption of the system of 20W, the system can continuously work for about 7 hours, and the requirement of 6-hour working time is met. And meanwhile, a standard power adapter of 19.5V @4.7A is matched for charging, so that the charging can be effectively guaranteed, and power can be supplied to the equipment at the same time.
The above are only representative embodiments of the present invention in many specific applications, and do not limit the scope of the present invention. All technical solutions formed by conversion or equivalent replacement fall within the protection scope of the present invention.
Claims (3)
1. An automatic alignment device for wireless time service signals, comprising:
an antenna unit: the system comprises a base station, a modulation BPM wireless time service carrier signal and a data processing unit, wherein the modulation BPM wireless time service carrier signal is used for receiving a modulation BPM wireless time service carrier signal sent by a shore-based time service station;
a demodulation unit: the device is used for demodulating the modulated BPM wireless time service carrier signal to obtain a BPM time service modulation signal;
a signal acquisition unit: the device is used for carrying out digital processing on the BPM time service modulation signal to obtain a BPM digital waveform signal;
a signal processing unit: the system is used for identifying the BPM digital waveform signal according to the time pattern, acquiring effective second synchronization, minute synchronization, half-hour synchronization and hour synchronization, and calibrating the local system time;
a display unit: for displaying a system time;
a power supply unit: the power supply unit is used for supplying power to the demodulation unit, the signal acquisition unit, the display unit and the signal processing unit;
the signal processing unit is connected with a control unit, the control unit is connected with a power supply unit, and a communication interface used for being connected with other timing systems is arranged on the signal processing unit.
2. The device of claim 1, wherein the antenna unit is a short wave antenna with a shrinking function.
3. The device of claim 1, wherein the display unit is connected to the signal processing unit and the power supply unit, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022355954.8U CN212364805U (en) | 2020-10-21 | 2020-10-21 | Automatic alignment device for wireless time service signals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022355954.8U CN212364805U (en) | 2020-10-21 | 2020-10-21 | Automatic alignment device for wireless time service signals |
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| Publication Number | Publication Date |
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| CN212364805U true CN212364805U (en) | 2021-01-15 |
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| CN202022355954.8U Active CN212364805U (en) | 2020-10-21 | 2020-10-21 | Automatic alignment device for wireless time service signals |
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| CN (1) | CN212364805U (en) |
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- 2020-10-21 CN CN202022355954.8U patent/CN212364805U/en active Active
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