CN203504761U - Ultra wide band (UWB) positioning system with optical fiber interface reference node - Google Patents
Ultra wide band (UWB) positioning system with optical fiber interface reference node Download PDFInfo
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- CN203504761U CN203504761U CN201320675882.2U CN201320675882U CN203504761U CN 203504761 U CN203504761 U CN 203504761U CN 201320675882 U CN201320675882 U CN 201320675882U CN 203504761 U CN203504761 U CN 203504761U
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Abstract
The utility model discloses an ultra wide band (UWB) positioning system with an optical fiber interface reference node. The ultra wide band (UWB) positioning system includes an optical fiber interface reference node (1), an ultra wide band (UWB) positioning host machine (2), an optical fiber interface (3), an optical fiber (4) and a mobile node (5), wherein optical fiber interface (3) is fixed on the optical fiber interface reference node (1), the optical fiber interface reference node (1) is connected with the ultra wide band (UWB) positioning host machine (2) through the optical fiber (4), and the ultra wide band (UWB) positioning host machine (2) comprises at least one path of photoelectric conversion circuit arranged inside. According to the ultra wide band (UWB) positioning system, the reference node is connected with the positioning host machine through the optical fiber, and therefore, high-fidelity transmission of the waveform of ultra wide band time-domain pulse signals can be realized. With the ultra wide band (UWB) positioning system adopted, reference node remote deployment and signal transmission can be realized, and an application requirement for large-range signal transmission of the ultra wide band (UWB) positioning reference node can be satisfied.
Description
Technical field
The utility model belongs to electronic science and technology field, relates to electromagnetic transmission technology, is specifically related to ultra broadband (UWB) navigation system.
Background technology
The advantages such as ultra broadband (UWB) time domain pulse technique is widely used in the fields such as ground penetrating radar, UWB communication, UWB location, has information capacity large, and resolving power is high, strong security.The transmission of ultra broadband time domain pulse in system, need to be through the time domain broadband antenna of particular design, and this class antenna, except having frequency domain broadband character, also must have the ability of group delay consistency and phase equalization.The system of using ultra broadband time domain pulse technique, often has certain distance between antenna and system equipment, generally rely on coaxial cable to be connected.Although coaxial cable has wider bandwidth, overall loss is large, and has the unbalanced shortcoming of loss of low frequency and high frequency.
Theoretical according to electromagnetic transmission, electromagnetic wave is uploaded and can be produced decay at transmission line sowing time, and the frequency of signal transmission is higher, increases the decay producing larger with distance.More than the bandwidth of UWB time domain impulsive signals can reach several GHz, relative bandwidth reaches more than 50%, use coaxial cable to transmit, the high-end frequency content rate of decay of pulse signal is far away higher than low side frequency content, make pulse signal waveform produce serious distortion, along with the increase of transmission range, distortion meeting is more next serious, finally cause receiving system not identify, so just limited the distance of cable transmission.
Utility model content
The utility model provides a kind of UWB navigation system with optical fiber interface reference node, and this system is used optical fiber to be connected with positioning host with reference to node, can make the waveform of ultra broadband time domain impulsive signals realize high-fidelity transmission; Meanwhile, this system can realize the remote laying of reference node and signal transmission, can meet the transmission of the signal on a large scale application demand of ultra broadband (UWB) position reference node.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of UWB navigation system with optical fiber interface reference node, comprise optical fiber interface reference node, UWB positioning host, optical fiber interface, optical fiber and mobile node, described optical fiber interface is fixed on optical fiber interface reference node, and described optical fiber interface reference node is connected by optical fiber with UWB positioning host; Described UWB positioning host inside comprises at least one road photoelectric switching circuit.
As preferably, the inside of described UWB positioning host also comprises one or more optical demodulators.
As preferably, the inside of UWB positioning host can not have optical demodulator yet, by stub cable, is connected with one or more exterior light demodulators.
As preferably, described optical fiber interface reference node has a plurality of, by optical fiber, is connected with UWB positioning host, forms a navigation system, realizes the accurate location to mobile node.
As preferably, described optical fiber interface reference node inside comprises time domain pulse antenna and optical modulator, and the outside of optical fiber interface reference node provides optical fiber interface, by optical fiber, is connected with the optical demodulator in UWB positioning host.
As preferably, the inside of optical fiber interface reference node also comprises amplifier.
As preferably, the inside of described optical fiber interface reference node also comprises A/D translation circuit.
As preferably, the inside of described optical fiber interface reference node also comprises metal floor, dielectric radome and mounting panel; Described time-domain antenna and the metal floor front portion in optical fiber interface reference node, the antenna being formed by metal floor, due to the reflex of metal floor, its antenna pattern becomes half space from the total space, is conducive to reduce the phase mutual interference between parts and improves antenna gain; Described amplifier and optical modulator are between metal floor and mounting panel, and described optical fiber interface is positioned at the rear portion of optical fiber interface reference node; Optical fiber interface reference node integral body is by dielectric radome covering protection.
As preferably, described mounting panel is the circular aluminium sheet of Φ 160mm * 2mm, and metal floor is the circular aluminium sheet of Φ 100mm * 1mm, and time-domain antenna is Φ 3mm * 18mm copper post, and operating frequency is 3.1 ~ 4.5GHz, and centre frequency is 3.8GHz; The radome of dielectric radome is conical glass-reinforced plastic material, and thickness is 1mm; Optical fiber interface is FC spiral interface seat; Amplifier operating frequency is 3.1 ~ 4.5GHz, gains as 20dB; Optical modulator adopts 1310 μ m Laser Modulation.
Compared with prior art, the beneficial effects of the utility model are: take full advantage of the loss that optical fiber has little, the feature that transport tape is roomy, the time domain impulsive signals that UWB position reference node is received, can, in long Distance Transmission, realize the undistorted transmission of signal waveform; Meanwhile, the effective coverage range of reference node in UWB navigation system is significantly improved, reduce reference node quantity, reduce the construction cost of UWB navigation system, be conducive to large-scale promotion and the application of this high-accuracy position system.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the operation principle schematic diagram of optical fiber interface reference node of the present utility model.
Fig. 3 is the optical fiber interface reference node structural representation of the utility model embodiment 1.
Fig. 4 is the optical fiber interface reference node structural representation of the utility model embodiment 2.
Fig. 5 is the optical fiber interface reference node structural representation of the utility model embodiment 3.Wherein optical fiber interface reference node is comprised of time domain pulse antenna, amplifier, A/D translation circuit and optical modulator.
Fig. 6 is the UWB navigation system main machine structure schematic diagram of the utility model embodiment 1 or 2, and there are one or more optical demodulators inside.
Fig. 7 is the UWB navigation system main frame schematic diagram of the utility model embodiment 3.
Fig. 8 is the UWB navigation system block diagram with optical fiber interface reference node of the utility model 4.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated.
First once overall structure of the present utility model, as shown in Figure 1, a kind of UWB navigation system with optical fiber interface reference node, comprise optical fiber interface reference node 1, UWB positioning host 2, optical fiber interface 3, optical fiber 4 and mobile node 5, optical fiber interface 3 is fixed on optical fiber interface reference node 1, and optical fiber interface reference node 1 is connected by optical fiber 4 with UWB positioning host 2; UWB positioning host 2 inside comprise at least one road photoelectric switching circuit.
The utility model operation principle is as follows:
In fiber optic transmission system, the main semiconductor laser that uses is as light source, and semiconductor light sources realizes the signal of telecommunication to the conversion of light signal by the electro optic effect of PN junction.Laser will send stable relevant linear light, and drive current must be higher than threshold current, and threshold current temperature influence is very large, with temperature, raises and increases.
?when design the utility model-there is the UWB navigation system of optical fiber interface reference node, pulsewidth and the waveform of the time domain impulsive signals of first receiving and dispatching as required, determine the operating frequency range of pulse signal, determine modulation system, select suitable modulation drive circuit, determine and calculated threshold electric current, according to system parameters requirements such as transmission ranges, determine optical output power, the requirements such as electro-optic delay amount, the parameters such as the finally form of definite time domain pulse antenna and gain, be combined into whole optical fiber interface reference node, and form navigation system by a plurality of reference nodes together with UWB positioning host.
The UWB navigation system overall work process of the utility model-have optical fiber interface reference node is as follows:
Need the object of location and the UWB label that personnel wear, with some cycles, send UWB pulse signal, be positioned at the reference antenna that several (more than three) of locating area have optical fiber interface and receive UWB pulse signal, and be modulated into light signal, by Optical Fiber Transmission, arrive UWB positioning host, demodulate UWB pulse signal, carry out sampling analysis, according to the difference of time of arrival (toa), calculate the coordinate position of label.
Fig. 2 is the operation principle schematic diagram of optical fiber interface reference node of the present utility model.After space impulse signal receives by time-domain antenna, again through light modulator modulates to light signal, through Optical Fiber Transmission, to optical demodulator, be again reduced into pulse signal.
Specifically introduce again several specific embodiment of the present utility model below.
Embodiment 1
A kind of UWB navigation system with optical fiber interface reference node, comprise optical fiber interface reference node 1, UWB positioning host 2, optical fiber interface 3, optical fiber 4 and mobile node 5, optical fiber interface 3 is fixed on optical fiber interface reference node 1, and 1(is one or more for optical fiber interface reference node) be connected by optical fiber 4 with UWB positioning host 2; Form a navigation system, realize the accurate location to mobile node 5.UWB positioning host 2 inside comprise a road photoelectric switching circuit.In the present embodiment, in the inside of UWB positioning host 2, also comprise one or more optical demodulators.Meanwhile, in the present embodiment, optical fiber interface reference node 1 inside forms (as shown in Figure 3) by time domain pulse antenna and optical modulator, and the outside of optical fiber interface reference node 1 provides optical fiber interface, by optical fiber, is connected with the optical demodulator in UWB positioning host.
In the present embodiment, the inside of UWB positioning host 2 also comprises one or more optical demodulators (as shown in Figure 6).
Embodiment 2
This example is with implementing 1 difference, and in the present embodiment, optical fiber interface reference node 1 inside forms (as shown in Figure 4) by time domain pulse antenna, amplifier and optical modulator.
The advantage of this enforcement is, when reference node and UWB positioning label distant, when the UWB pulse signal received is very weak, amplifier can amplify UWB pulse signal, to arrive the object of the normal work of optical modulator.
This example is following 2 points with enforcement 1 difference:,
1,, in the present embodiment, optical fiber interface reference node 1 inside forms (as shown in Figure 5) by time domain pulse antenna, amplifier, A/D translation circuit and optical modulator.
2, in the present embodiment, the inside of UWB positioning host 2 does not have optical demodulator, by stub cable, is connected (as shown in Figure 7) with one or more exterior light demodulators.
The advantage of this enforcement is: optical demodulator is not established in UWB positioning host inside, just by external cable, is connected and is added when needed, makes system in combination convenient flexibly, is conducive to system cost minimum.
Embodiment 4
The difference of the present embodiment and above-mentioned any one embodiment is, optical fiber interface reference node 1 inside (as shown in Figure 8), except time domain pulse antenna, amplifier and optical modulator, also comprises metal floor 7, dielectric radome 8, mounting panel 9; Time-domain antenna 6 and the front portion of metal floor 7 in optical fiber interface reference node 1, the antenna being formed by metal floor, due to the reflex of metal floor, its antenna pattern becomes half space from the total space, is conducive to reduce the phase mutual interference between parts and improves antenna gain; Amplifier and optical modulator are between metal floor 7 and mounting panel 9, and optical fiber interface 3 is positioned at the rear portion of optical fiber interface reference node 1; Optical fiber interface reference node 1 integral body is by dielectric radome 8 covering protections.
The advantage of this enforcement is: by parts integrated designs such as time-domain antenna, amplifier and optical modulators, be convenient to install and reduce failure rate, with metal floor isolation, prevent phase mutual interference, dielectric radome is as containment vessel and can see through electromagnetic wave.
The present embodiment is on the basis of embodiment 4, the more concrete design parameter that defines some building blocks and size.Be specially: mounting panel 9 is the circular aluminium sheet of Φ 160mm * 2mm, and metal floor 7 is Φ 100mm * 1mm circle aluminium sheet, and time-domain antenna 6 is Φ 3mm * 18mm copper post, and operating frequency is 3.1 ~ 4.5GHz, and centre frequency is 3.8GHz; Radome is conical glass-reinforced plastic material, and thickness is 1mm; Optical fiber interface 3 is FC spiral interface seat; Amplifier operating frequency is 3.1 ~ 4.5GHz, gains as 20dB; Optical modulator adopts 1310 μ m Laser Modulation.
The advantage of this enforcement is: according to Practical Project demand, designed the optical fiber interface reference node of a concrete application, selected general Laser Modulation parts and interface, to reduce costs.
Claims (9)
1. a UWB navigation system with optical fiber interface reference node, it is characterized in that: comprise optical fiber interface reference node (1), UWB positioning host (2), optical fiber interface (3), optical fiber (4) and mobile node (5), it is upper that described optical fiber interface (3) is fixed on optical fiber interface reference node (1), and described optical fiber interface reference node (1) is connected by optical fiber (4) with UWB positioning host (2); Described UWB positioning host (2) inside comprises at least one road photoelectric switching circuit.
2. the UWB navigation system with optical fiber interface reference node according to claim 1, is characterized in that: the inside of described UWB positioning host (2) also comprises one or more optical demodulators.
3. the UWB navigation system with optical fiber interface reference node according to claim 1, is characterized in that: the inside of described UWB positioning host (2) does not have optical demodulator, by stub cable, is connected with one or more exterior light demodulators.
4. the UWB navigation system with optical fiber interface reference node according to claim 1, it is characterized in that: described optical fiber interface reference node (1) has a plurality of, by optical fiber (4), be connected with UWB positioning host, form a navigation system, realize the accurate location to mobile node (5).
5. the UWB navigation system with optical fiber interface reference node according to claim 1, it is characterized in that: described optical fiber interface reference node (1) inside comprises time domain pulse antenna and optical modulator, the outside of optical fiber interface reference node (1) provides optical fiber interface, by optical fiber, is connected with the optical demodulator in UWB positioning host.
6. the UWB navigation system with optical fiber interface reference node according to claim 5, is characterized in that: the inside of described optical fiber interface reference node (1) also comprises amplifier.
7. the UWB navigation system with optical fiber interface reference node according to claim 6, is characterized in that: the inside of described optical fiber interface reference node (1) also comprises A/D translation circuit.
8. the UWB navigation system with optical fiber interface reference node according to claim 5, is characterized in that: the inside of described optical fiber interface reference node (1) also comprises metal floor (7), dielectric radome (8), mounting panel (9); Described time-domain antenna (6) and the front portion of metal floor (7) in optical fiber interface reference node (1); Described amplifier and optical modulator are positioned between metal floor (7) and mounting panel (9), and described optical fiber interface (3) is positioned at the rear portion of optical fiber interface reference node (1); Optical fiber interface reference node (1) is whole by dielectric radome (8) covering protection.
9. the UWB navigation system with optical fiber interface reference node according to claim 8, it is characterized in that: described mounting panel (9) is the circular aluminium sheet of Φ 160mm * 2mm, metal floor (7) is the circular aluminium sheet of Φ 100mm * 1mm, time-domain antenna (6) is Φ 3mm * 18mm copper post, operating frequency is 3.1 ~ 4.5GHz, and centre frequency is 3.8GHz; The radome of dielectric radome (8) is conical glass-reinforced plastic material, and thickness is 1mm; Optical fiber interface (3) is FC spiral interface seat; Amplifier (6) operating frequency is 3.1 ~ 4.5GHz, gains as 20dB; Optical modulator adopts 1310 μ m Laser Modulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320675882.2U CN203504761U (en) | 2013-10-30 | 2013-10-30 | Ultra wide band (UWB) positioning system with optical fiber interface reference node |
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| CN201320675882.2U CN203504761U (en) | 2013-10-30 | 2013-10-30 | Ultra wide band (UWB) positioning system with optical fiber interface reference node |
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| CN203504761U true CN203504761U (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10352995B1 (en) | 2018-02-28 | 2019-07-16 | Nxp Usa, Inc. | System and method of multiplexing laser triggers and optically selecting multiplexed laser pulses for laser assisted device alteration testing of semiconductor device |
| US10782343B2 (en) | 2018-04-17 | 2020-09-22 | Nxp Usa, Inc. | Digital tests with radiation induced upsets |
-
2013
- 2013-10-30 CN CN201320675882.2U patent/CN203504761U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10352995B1 (en) | 2018-02-28 | 2019-07-16 | Nxp Usa, Inc. | System and method of multiplexing laser triggers and optically selecting multiplexed laser pulses for laser assisted device alteration testing of semiconductor device |
| US10782343B2 (en) | 2018-04-17 | 2020-09-22 | Nxp Usa, Inc. | Digital tests with radiation induced upsets |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190227 Address after: 610000 Sichuan China (Sichuan) Free Trade Pilot Zone Patentee after: CHENGDU JINGWEI TECHNOLOGY Co.,Ltd. Address before: 610000 2nd Floor, Building A, No. 3, West Fourth Road, Wuqing, Wuhou District, Chengdu City, Sichuan Province Patentee before: CHENGDU LINKCOMM ELECTRONIC Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
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| CX01 | Expiry of patent term |