CN209562815U - Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability - Google Patents
Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability Download PDFInfo
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- CN209562815U CN209562815U CN201920770907.4U CN201920770907U CN209562815U CN 209562815 U CN209562815 U CN 209562815U CN 201920770907 U CN201920770907 U CN 201920770907U CN 209562815 U CN209562815 U CN 209562815U
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Abstract
The utility model discloses gateway system framework outside a kind of room LoRaWan of anti-interference high reliability, including shell, the side wall of the shell is equipped with ANT antenna opening, DC power supply connector and ETHERNET interface, radio frequency mainboard and anti-interference cavity body filter are provided in the shell, one end of the anti-interference cavity body filter is equipped with TRX mouthfuls, described TRX mouthfuls is connect by radio-frequency cable with the radio frequency mainboard, the other end of the anti-interference cavity body filter is connect with the ANT antenna opening, and the DC power supply connector, ETHERNET interface are connect with the radio frequency mainboard respectively.The utility model can greatly improve equipment in the anti-interference ability of outdoor practical networking deployment, lightning protection capability, preferably play the functional characteristic of equipment, it avoids blocking bring communication abnormality because of transceiver channel, the adverse consequences such as loss of data, meet the application demand under various extreme conditions, improves networking benefit and good customer experience.
Description
Technical field
The utility model relates to LoRaWan gateways, and in particular to gateway outside a kind of room LoRaWan of anti-interference high reliability
System architecture.
Background technique
The design of LoRaWan gateway, the radio-frequency receiving-transmitting end of current many products carry out passband using SAW filter
The selection of signal and the inhibition of out of band signal, the design of this filter circuit can only generally have for the conducted signal of circuit-level
Good inhibiting effect does not have good anti-interference effect then to spatial electromagnetic field signal, is only suitable for periphery wireless environment and compares
Clean indoor scenarios application.
Currently, gateway outside LoRaWan Internet of Things room, it usually can all be mounted on roof, lamp stand, the outdoor scene such as steel tower, with
Meet signal covering and networking effect, and the supervision and constraint by department, relevant unit, many feelings are installed in the networking of communication equipment
, can be with wireless 4G communication base station when gateway deployment outside Internet of Things room under condition, tower is put and other powerful communication equipment co-sited
Tower installation altogether, to reach higher cost-effectiveness and government and relevant departments' unit management is facilitated to safeguard.
Under such complex wireless environments, especially the base station 4G is high-power output equipment, for routine
The framework of LoRaWan gateway, the characteristic and performance of SAW filter, is far from satisfying the requirement of Anti-interference Design, due to periphery
The influence of the high-power interference signal of wireless environment, cause equipment performance drop volume, data packetloss, communication abnormality etc. it is a series of application with
And integrity problem, networking effect is poor, and customer experience is bad.
In conclusion technology has the following deficiencies: now
1, LoRaWan gateway, radio circuit sending and receiving end routinely use the SAW SAW filter of circuit-level to carry out anti-interference set
Meter, SAW filter can only have preferable inhibitory effect for the conducted signal of circuit-level, not have substantially to spatial electromagnetic field signal
Anti-interference effect；
2, SAW filter, proximal end Out-of-band rejection is bad, and passbands specification temperature characterisitic is more sensitive, passband and with outer height
Indicator difference is larger under low temperature condition, and stability and properties of product consistency be not high；
3, the application of outdoor gateway, wireless environment is extremely complex, and the design of conventional scheme is not able to satisfy jamproof requirement,
When especially being assembled with the high-power base station 4G co-sited, the influence of the performance of gateway itself is particularly acute.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of anti-interference high reliability is provided
Gateway system framework outside the room LoRaWan.
The technical solution of the utility model is as follows:
Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability, including shell, the side wall of the shell are set
There are ANT antenna opening, DC power supply connector and ETHERNET interface, radio frequency mainboard and the filtering of anti-interference cavity are provided in the shell
Device, one end of the anti-interference cavity body filter are equipped with TRX mouthfuls, and described TRX mouthfuls is connected by radio-frequency cable and the radio frequency mainboard
It connects, the other end of the anti-interference cavity body filter is connect with the ANT antenna opening, and the DC power supply connector, ETHERNET connect
Mouth is connect with the radio frequency mainboard respectively.
Wherein, the anti-interference cavity body filter is FDD mode of frequency division duplexing.
Wherein, the anti-interference cavity body filter is TDD TDD mode.
Wherein, the inside of the anti-interference cavity body filter is inductive coupled design.
Wherein, the anti-interference cavity body filter is merged by TX emission filter and RX receiving filter, described
One end of TX emission filter is TX transmitting terminal, and one end of the RX receiving filter is the receiving end RX, the TX transmitting terminal, RX
Receiving end is connect by radio-frequency cable with the radio frequency mainboard, the other end conjunction of the TX emission filter, RX receiving filter
Road is to the ANT antenna opening.
Wherein, the frequency range of the TX emission filter is 500MHz-510MHz.
Wherein, the frequency range of the RX receiving filter is 470MHz-490MHz.
Wherein, the radio frequency mainboard includes baseband processing module, RF receiving and transmission module, operation module, functional module and electricity
Source control module, the RF receiving and transmission module, operation module, functional module are connect with the baseband processing module respectively, described
It is connected between RF receiving and transmission module and the anti-interference cavity body filter by the radio-frequency cable, the power management module point
Do not connect with the baseband processing module, RF receiving and transmission module, operation module, functional module, the DC power supply connector with it is described
Power management module connection, the ETHERNET interface are connect with the functional module.
Wherein, the RF receiving and transmission module includes amplifier circuit and SAW filter.
Wherein, the shell is waterproof shield shell.
Compared with the existing technology, the utility model has the beneficial effects that: the utility model can greatly improve equipment in room
The anti-interference ability of outer practical networking deployment, lightning protection capability are preferably played the functional characteristic of equipment, are avoided because of transceiver channel
Block bring communication abnormality, the adverse consequences such as loss of data meet the application demand under various extreme conditions, improve networking effect
Beneficial and good customer experience.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the knot of gateway system framework outside a kind of room LoRaWan of anti-interference high reliability provided by the utility model
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of anti-interference cavity body filter described in the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The present invention will be further described in detail for example.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
Embodiment
Referring to Fig. 1, the utility model provides gateway system framework outside a kind of room LoRaWan of anti-interference high reliability,
Including shell, shell is waterproof shield shell, and the side wall of shell is equipped with ANT antenna opening, DC power supply connector and ETHERNET interface,
Radio frequency mainboard and anti-interference cavity body filter are provided in shell, one end of anti-interference cavity body filter is equipped with TRX mouthfuls, TRX mouthfuls
It is connect by radio-frequency cable with radio frequency mainboard, the other end of anti-interference cavity body filter is connect with ANT antenna opening, and DC power supply connects
Head, ETHERNET interface are connect with radio frequency mainboard respectively.
Specifically, the radio frequency mainboard include baseband processing module, RF receiving and transmission module, operation module, functional module and
Power management module, RF receiving and transmission module, operation module, functional module are connect with baseband processing module respectively, radio-frequency receiving-transmitting mould
Between block and anti-interference cavity body filter by radio-frequency cable connect, power management module respectively with baseband processing module, radio frequency
Transceiver module, operation module, functional module connection, DC power supply connector are connect with power management module, ETHERNET interface and function
It can module connection.
The RF receiving and transmission module includes amplifier circuit and SAW filter.
The anti-interference cavity body filter can be designed as FDD mode of frequency division duplexing, may be designed in TDD time division duplex
Mode.To meet the specific requirements of different frequency range different geographical application.
Specifically, as shown in Fig. 2, the anti-interference cavity body filter is closed by TX emission filter and RX receiving filter
And form, one end of TX emission filter is TX transmitting terminal, and one end of RX receiving filter is the receiving end RX, TX transmitting terminal, RX
Receiving end is connect by radio-frequency cable with radio frequency mainboard, and the other end combining of TX emission filter, RX receiving filter was by ANT days
Line mouth.The ANT antenna opening can have good matching effect with LoRa antenna seamless interfacing.
The frequency range of the TX emission filter is 500MHz-510MHz.
The frequency range of the RX receiving filter is 470MHz-490MHz.
TX emission filter and RX receiving filter use different frequency to synchronize transmission.
Working principle: uplink signal is inputted by Lora antenna to ANT antenna opening, is received by RX receiving filter to RX
End, then be transferred to system receiver circuit and carry out signal demodulation, RX receiving filter pass band width is 470MHz-490MHz, passband
Insertion Loss is small (>-1.8dB), and passband standing wave is had excellent performance (<-20dB), and good matching is got well and had to useful signal passability, and band is outer
Degree of suppression is high: DC-444.9MHz <-70dB, 500-510MHz <-85dB, 510MHz-10GHz <-70dB, to out-of-band interference signal
Inhibition have contributed much, the interference rejection ability of system has the promotion of matter.The pass band insertion loss of general SAW filter is 2.5dB or more,
Stationary wave characteristic is general (> -15dB), and temperature stability is not high, and temperature drift is mainly used in circuit-level, in addition SAW is filtered than more serious
Wave device is chip-scale device, does not guarantee frequency applications generally, to not inhibiting well substantially for high-frequency signal (3GHz or more)
Effect
Row signal is exported by system transmit circuit, by TX emission filter, defeated to Lora antenna by ANT antenna opening
Out, achieve the purpose that signal covers, TX emission filter and RX receiving filter receive-transmit isolation are high (< -80dB), can be effective
The signal interference of system itself transceiver channel is avoided, while ensuring to emit signal and meeting and meet FCC, the officials such as SRRC are wirelessly recognized
Card standard.
By being provided with an anti-interference cavity body filter, no matter which believes from circuit conduct signal and external electromagnetic field
Number radiation considers, can play excellent anti-jamming effectiveness, the requirement of outdoor complex wireless environments be met from design principle, very
Volume, data packetloss, communication abnormality drop in the equipment performance as caused by the interference of external signal in good solution actual application
The problems such as, reach good networking effect and experience.
The anti-interference cavity body filter has preferable radiofrequency characteristics, and pass band insertion loss is small, and return loss is small, and Out-of-band rejection is high,
Better matching can be reached with antenna performance, the radiofrequency characteristics of gateway system are performed to desirable level.
The anti-interference cavity body filter index has stable temperature characterisitic, meets under outdoor extreme temperature state to setting
Standby performance requirement.
The design of anti-interference cavity body filter can realize the tool of different geographical different application frequency range according to LoRaWan standard
Body demand, index can be adjusted flexibly.
For the concrete application of successive bands, anti-interference cavity body filter can realize common mode compatible design, anti-dry meeting
On the basis of immunity energy, cost control is effectively carried out.
Anti-interference cavity body filter, uses inductive coupled design, and DC direct current to ground is compared and uses lightning protection component on mainboard
Mode, have better lightning protection effect, in outdoor utility, use cable connection radio frequency mainboard and LoRa antenna compared to conventional
Mode, this programme preferably can protect back-end circuit to avoid lightning damage, very positive tribute is brought to the reliability of product
It offers.
Gateway system framework outside a kind of room LoRaWan for anti-interference high reliability that utility model provides, with conventional gateway
Design is compared, and the interference rejection ability of gateway, lightning protection capability are greatly improved, to meet the various high standard high reliability of outdoor deployment
Application demand, while can preferably play the radio-frequency performance of gateway, reach ideal networking effect.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability, it is characterised in that: described outer including shell
The side wall of shell is equipped with ANT antenna opening, DC power supply connector and ETHERNET interface, and radio frequency mainboard is provided in the shell and is resisted dry
Disturb cavity body filter, one end of the anti-interference cavity body filter is equipped with TRX mouthful, described TRX mouthfuls pass through radio-frequency cable with it is described
The connection of radio frequency mainboard, the other end of the anti-interference cavity body filter are connect with the ANT antenna opening, the DC power supply connector,
ETHERNET interface is connect with the radio frequency mainboard respectively.
2. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 1, feature exist
In: the anti-interference cavity body filter is FDD mode of frequency division duplexing.
3. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 1, feature exist
In: the anti-interference cavity body filter is TDD TDD mode.
4. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 2 or 3, special
Sign is: the inside of the anti-interference cavity body filter is inductive coupled design.
5. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 4, feature exist
In: the anti-interference cavity body filter is merged by TX emission filter and RX receiving filter, the TX transmitting filtering
One end of device is TX transmitting terminal, and one end of the RX receiving filter is the receiving end RX, and the TX transmitting terminal, the receiving end RX pass through
Radio-frequency cable is connect with the radio frequency mainboard, and the other end combining of the TX emission filter, RX receiving filter is to the ANT
Antenna opening.
6. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 5, feature exist
In: the frequency range of the TX emission filter is 500MHz-510MHz.
7. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 5, feature exist
In: the frequency range of the RX receiving filter is 470MHz-90MHz.
8. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 1, feature exist
In: the radio frequency mainboard include baseband processing module, RF receiving and transmission module, operation module, functional module and power management module,
The RF receiving and transmission module, operation module, functional module are connect with the baseband processing module respectively, the RF receiving and transmission module
Connect between the anti-interference cavity body filter by the radio-frequency cable, the power management module respectively with the base band
Processing module, RF receiving and transmission module, operation module, functional module connection, the DC power supply connector and the power management module
Connection, the ETHERNET interface are connect with the functional module.
9. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 8, feature exist
In: the RF receiving and transmission module includes amplifier circuit and SAW filter.
10. gateway system framework outside a kind of room LoRaWan of anti-interference high reliability according to claim 1, feature
Be: the shell is waterproof shield shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770907.4U CN209562815U (en) | 2019-05-23 | 2019-05-23 | Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770907.4U CN209562815U (en) | 2019-05-23 | 2019-05-23 | Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209562815U true CN209562815U (en) | 2019-10-29 |
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ID=68313828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920770907.4U Active CN209562815U (en) | 2019-05-23 | 2019-05-23 | Gateway system framework outside a kind of room LoRaWan of anti-interference high reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209562815U (en) |
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2019
- 2019-05-23 CN CN201920770907.4U patent/CN209562815U/en active Active
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