CN201804047U - Signal strength testing device for wireless dispatchers supervision system - Google Patents
Signal strength testing device for wireless dispatchers supervision system Download PDFInfo
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- CN201804047U CN201804047U CN2010202392298U CN201020239229U CN201804047U CN 201804047 U CN201804047 U CN 201804047U CN 2010202392298 U CN2010202392298 U CN 2010202392298U CN 201020239229 U CN201020239229 U CN 201020239229U CN 201804047 U CN201804047 U CN 201804047U
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Abstract
The utility model relates to device for testing wireless communication signal strength and SNR (signal-to-noise ratio), in particular to a signal strength testing device for a wireless dispatchers supervision system, which is applied to a railway marshalling station launched on the wireless dispatchers supervision system and can ensure normal communication of the wireless dispatchers supervision system in the marshalling station. The testing device comprise a GPS (global positioning system) module, a wireless communication module, a logical analysis unit, a power supply module, a display module, a keyboard control module and a ground master station server, wherein, the logical analysis unit is connected with the GPS module to receive position information in a real-time manner and record a traveling path, and the logical analysis unit communicates with the ground master computer server through the wireless communication module, makes a judgment on the strength, SNR and bit error rate of a received signal, and produces relevance marks on a corresponding traveling path.
Description
Technical field:
The utility model relates to the proving installation of wireless communication signals intensity and signal to noise ratio (S/N ratio), especially is applied in to go up the marshaling yard that system supervised in wireless accent, guarantees that the wireless accent system of supervising is organizing into groups the normal wireless accent prison system signal strength test device of station communication.
Background technology:
Wireless communication signals intensity relies on the field intensity meter test at present, and the wireless communication module that uses in the wireless accent prison system is data radio station, the quality of data communication depends on signal intensity and signal to noise ratio (S/N ratio), and the signal intensity of the field test instrument that uses at present in can only the survey station field, if there is co-channel interference this moment, the signal intensity that field intensity meter is measured may be fine, but because poor signal to noise, the radio station can't receive correct data; And field intensity meter measures signal intensity, can only pass through the manual record test result, can not intuitively be embodied on the field pattern of station the analysis of inconvenient problem and solution.
The utility model content:
At the defective of above-mentioned prior art, concrete technical scheme of the present utility model is:
A kind of wireless accent prison system signal strength test device, it comprises GPS module, wireless communication module, logic analysis unit, power module, display module, Keyboard Control module and ground main website server, described logic analysis unit writes down the traveling track by the real-time receiving position information of GPS module; Received signal intensity, the noise bit error rate is when judged by wireless communication module and ground host server communication in described logic analysis unit, and goes out at corresponding traveling track subscript.After the test of whole station is finished, record data in ground main website server in the let-off gear(stand), according to the GPS receiving position information, in conjunction with the signal power that is measured, the signal intensity of each point, the noise bit error rate when in the field, field pattern mark station, contrast station is analyzed the field signal situation of standing after being used for test and finishing.
Described logic analysis unit, utilize wireless communication module to receive the information that main website server in ground sends, by wireless communication module signal intensity and signal to noise ratio (S/N ratio) are quantized, calculate the bit error rate of received signal in real time, in conjunction with above 3 signal intelligences of confirming current frequencies in the station, for wireless accent prison system provides communication support.
Described logic analysis unit, receive the gps data (proofreading and correct satellite orbital error, SA influence, atmospheric effect equal error in the gps data) of the continual renovation of ground host server transmission, and receive the gps data that this device GPS module receives, the positional information of fair copy device; And after test is finished, in conjunction with the signal intensity of being surveyed, noise when the bit error rate analyze, draw the topological diagram of departures field signal situation.
This device is the device of test signal intensity, and is very weak when signal intensity, be lower than-during 105dB, Realtime Alerts; When signal to noise ratio (S/N ratio) very poor, when being lower than 15dB, Realtime Alerts; By receiving the data message that the ground host server sends, calculate the reception bit error rate; After once test is finished, the test data of preserving is analyzed on the ground host server, draw test intensity curves figure along the line.
Description of drawings:
Fig. 1 is the structured flowchart of the wireless accent prison of the utility model system signal strength test device;
Fig. 2 is the workflow diagram of the wireless accent prison of the utility model system signal strength test device;
Fig. 3 is the analysis synoptic diagram of ground host server to test result.
Embodiment:
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of wireless accent prison system signal strength test device, it comprises GPS module, wireless communication module, logic analysis unit, power module, display module, Keyboard Control module and ground main website server, described logic analysis unit writes down the traveling track by the real-time receiving position information of GPS module; Received signal intensity, the noise bit error rate is when judged by wireless communication module and ground host server communication in described logic analysis unit, and goes out at corresponding traveling track subscript.After the test of whole station is finished, record data in ground main website server in the let-off gear(stand), according to the GPS receiving position information, in conjunction with the signal power that is measured, the signal intensity of each point, the noise bit error rate when in the field, field pattern mark station, contrast station is analyzed the field signal situation of standing after being used for test and finishing.
Described logic analysis unit, utilize wireless communication module to receive the information that main website server in ground sends, by wireless communication module signal intensity and signal to noise ratio (S/N ratio) are quantized, calculate the bit error rate of received signal in real time, in conjunction with above 3 signal intelligences of confirming current frequencies in the station, for wireless accent prison system provides communication support.
Described logic analysis unit, receive the gps data (proofreading and correct satellite orbital error, SA influence, atmospheric effect equal error in the gps data) of the continual renovation of ground host server transmission, and receive the gps data that this device GPS module receives, the positional information of fair copy device; And after test is finished, in conjunction with the signal intensity of being surveyed, noise when the bit error rate analyze, draw the topological diagram of departures field signal situation.
This device is the device of test signal intensity, and is very weak when signal intensity, be lower than-during 105dB, Realtime Alerts; When signal to noise ratio (S/N ratio) very poor, when being lower than 15dB, Realtime Alerts; By receiving the data message that the ground host server sends, calculate the reception bit error rate; After once test is finished, the test data of preserving is analyzed on the ground host server, draw test intensity curves figure along the line.
As shown in Figure 1, supervise the structured flowchart of system signal strength test device for the wireless accent of the utility model.By showing and operation interface, can carry out frequency configuration to wireless communication module, the scope that is provided with and can show and the output of reporting to the police test result between 400-500MHz.Wireless communication module utilizes digital signal processing (DSP) to finish modulation and demodulation, DSP can adapt to code element to the difference between the code element, thereby guarantee under-30 to+60 ℃ environment temperature, keep continuity and repeatable performance, Digital Signal Processing has been eliminated the unstable and variation in the mimic channel modulation process; Continuous phase frequency keying (CPFSK) modulation of adopting band root doubinary system to filter, Virterbi demoder and balanced soft-decision decoding are adopted in demodulation.
Because the positional information error that civilian GPS received is bigger than normal, for obtaining as far as possible positional information accurately, this device adopts pseudo range difference GPS mode, the ground host server try to achieve can visible satellite distance, and the distance of this calculating place compared with the measured value that contains error, utilize a α-βLv Boqi with this difference filtering and obtain its deviation, the range error with all satellites is transferred to proving installation then, and proving installation utilizes this range error to correct the pseudorange of measurement.At last, the pseudorange after the proving installation utilization is corrected solves the position of itself, but with regard to the cancellation common error, improves bearing accuracy.
As shown in Figure 2, supervise the workflow diagram of system signal strength test device for the wireless accent of the utility model.Proving installation receives the GPS positional information in real time, and the position of the error correction of combined ground host server transmission itself, receive by wireless communication module simultaneously and measure the information that the ground host server sends, carry out the calculating of the bit error rate when of signal intensity, noise.
As shown in Figure 3, be the analysis synoptic diagram of ground host server to test result.After each test was finished, the file that this test is write down imported.
Claims (1)
1. system signal strength test device supervised in a wireless accent, it is characterized in that, comprise GPS module, wireless communication module, logic analysis unit, power module, display module, Keyboard Control module and ground main website server, described logic analysis unit connects the real-time receiving position information of GPS module, record traveling track; Received signal intensity, the noise bit error rate is when judged by wireless communication module and ground host server communication in described logic analysis unit, and goes out at corresponding traveling track subscript.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202392298U CN201804047U (en) | 2010-06-25 | 2010-06-25 | Signal strength testing device for wireless dispatchers supervision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202392298U CN201804047U (en) | 2010-06-25 | 2010-06-25 | Signal strength testing device for wireless dispatchers supervision system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201804047U true CN201804047U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202392298U Expired - Lifetime CN201804047U (en) | 2010-06-25 | 2010-06-25 | Signal strength testing device for wireless dispatchers supervision system |
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| Country | Link |
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| CN (1) | CN201804047U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995188A (en) * | 2014-05-27 | 2014-08-20 | 天津大学 | Full-band radio-frequency signal detecting and locating device and method capable of carrying out single frequency band detection |
| CN108512616A (en) * | 2018-04-16 | 2018-09-07 | 努比亚技术有限公司 | Method for displaying signal intensity, mobile terminal and computer readable storage medium |
| CN115140133A (en) * | 2021-03-30 | 2022-10-04 | 比亚迪股份有限公司 | Train-ground wireless signal testing device, system and method for rail transit |
-
2010
- 2010-06-25 CN CN2010202392298U patent/CN201804047U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995188A (en) * | 2014-05-27 | 2014-08-20 | 天津大学 | Full-band radio-frequency signal detecting and locating device and method capable of carrying out single frequency band detection |
| CN103995188B (en) * | 2014-05-27 | 2017-02-15 | 天津大学 | Full-band radio-frequency signal detecting and locating device and method capable of carrying out single frequency band detection |
| CN108512616A (en) * | 2018-04-16 | 2018-09-07 | 努比亚技术有限公司 | Method for displaying signal intensity, mobile terminal and computer readable storage medium |
| CN108512616B (en) * | 2018-04-16 | 2021-10-29 | 努比亚技术有限公司 | Signal intensity display method, mobile terminal and computer readable storage medium |
| CN115140133A (en) * | 2021-03-30 | 2022-10-04 | 比亚迪股份有限公司 | Train-ground wireless signal testing device, system and method for rail transit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI TIEDA TELECOM TECHNOLOGY CO., LTD. Free format text: FORMER NAME: TIEDA TELECOMMUNICATION EQUIPMENT CO., LTD., SHANGHAI |
|
| CP03 | Change of name, title or address |
Address after: 201802 Shanghai City, Jiading District Nanxiang Town in North Road 1755 Lane 6 Patentee after: SHANGHAI TIEDA ELECTRONIC AND INFORMATION TECHNOLOGY CO., LTD. Address before: 9, No. 267, middle Tianmu Road, Zhabei District, Shanghai, No. 200070 Patentee before: Tieda Telecommunication Equipment Co., Ltd., Shanghai Address after: 201802 Shanghai City, Jiading District Nanxiang Town in North Road 1755 Lane 6 Patentee after: SHANGHAI TIEDA ELECTRONIC AND INFORMATION TECHNOLOGY CO., LTD. Address before: 9, No. 267, middle Tianmu Road, Zhabei District, Shanghai, No. 200070 Patentee before: Tieda Telecommunication Equipment Co., Ltd., Shanghai |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |