CN107659323A - A kind of 125K drivers and its transmission mechanism based on either simplex multimode - Google Patents
A kind of 125K drivers and its transmission mechanism based on either simplex multimode Download PDFInfo
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- CN107659323A CN107659323A CN201710659035.XA CN201710659035A CN107659323A CN 107659323 A CN107659323 A CN 107659323A CN 201710659035 A CN201710659035 A CN 201710659035A CN 107659323 A CN107659323 A CN 107659323A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a kind of 125K drivers based on either simplex multimode and its send mechanism, the technical scheme of either simplex multimode excitation device of the present invention is that single main controller adds multiple radiofrequency emitting modules and antenna, asynchronous transmission mechanism is used during transmission, signal is only sent by an antenna therein i.e. in same time slot, between different time-gap by the way of switching in turn, so as to ensure that the real-time of 125K signals transmission, completely solve the problem of co-channel interference in 125K signal overlaps area, and there is wide coverage, positioning precision is high, scheduling is flexibly and implementation cost is low, the features such as low in energy consumption.
Description
Technical field
The present invention relates to a kind of driver, more particularly to a kind of 125K drivers and its transmitter based on either simplex multimode
System.
Background technology
125K drivers are 125KHZ as the important component in alignment system, its operating center frequency, are generally adopted
With OOK modulation systems, have the function that to wake up electronic tag.Current driver scheme, all pass through one using one piece of master control borad
Root antenna sends the scheme of 125K modulated signals, and this scheme can not solve asking for 125K signal overlaps area homogenous frequency signal interference
Topic, nor can effectively solve the problem that coverage requirement is wider, covering precision requires higher scene.Therefore, design
A kind of 125K drivers and its transmission mechanism based on either simplex multimode are necessary.
The content of the invention
The present invention for overcome above-mentioned weak point, and it is an object of the present invention to provide a kind of 125K drivers based on either simplex multimode and
It sends mechanism, and the technical scheme of either simplex multimode excitation device of the present invention adds multiple radio-frequency transmissions moulds for single main controller
Block and antenna, asynchronous transmission mechanism is used during transmission, i.e., signal is only sent by an antenna therein in same time slot, no
With between time slot by the way of switching in turn, so as to ensure that 125K signals send real-time, completely solve 125K letter
The problem of co-channel interference of number overlay region, and with wide coverage, positioning precision is high, scheduling flexibly and implementation cost is low, work(
Consume the features such as low.
The present invention is to reach above-mentioned purpose by the following technical programs：A kind of 125K drivers based on either simplex multimode, bag
Include：Main controller, several radiofrequency emitting modules, some antennas, power modules；Main controller is connected with radiofrequency emitting module；Penetrate
Frequency transmitter module is connected with antenna；Power module is connected with main controller, radiofrequency emitting module respectively, is powered.
Preferably, described radiofrequency emitting module is identical with the quantity of antenna, preferred amount 2.
Preferably, described main controller preferably uses the nRF52832 of NORDIC companies, it is integrated with nRF52832
BLE4.2 functions, support are configured by BLE to driver parameter by eating dishes without rice or wine.
Preferably, described radiofrequency emitting module preferably uses IRF7389 chips.
Preferably, described radiofrequency emitting module and the limited amount system of antenna, a main controller can drive simultaneously
The quantity of radio frequency sending module restricted as follows, formula is as follows：
N=BPS/BITS
M=N/ST
Wherein, BPS is sends baud rate, and BITS is driver ID bit numbers, and ST is driver ID each second transmission time
Number, N are the driver number sent each second, and M is the quantity of radio frequency sending module.
A kind of transmission mechanism of the 125K drivers based on either simplex multimode, using asynchronous transmission mechanism, is switched using time slot
Mode send signal, i.e., signal can only be sent by antenna in same time slot, using cutting in turn between different time-gap
The mode changed is transmitted signal.
Selected preferably, described transmission mechanism can be directed to practical application scene, including following three kinds of transmissions mechanism：It is more
The more ID's of mould sends mechanism, the identical ID of the multimode mechanism of transmission in turn, freely dispatches formula transmission mechanism in turn.
Preferably, the more ID of described multimode transmitter in turn is made as：Under more antenna conditions, and every aerial band
There is respective driver ID, in external send, each driver ID externally sends signal in turn by way of queuing, the hair
Send that mechanism is applicable to arrange multiple anchor points and anchor point needs the application scenarios of demarcation of location.
Preferably, the identical ID of the described multimode mechanism of transmission in turn is similar with the more ID of the multimode mechanism of transmission in turn,
Both differences are the driver ID sent difference, and the identical ID of the multimode mechanism of transmission in turn is sent by more antennas
Same driver ID numberings.
Preferably, described free scheduling formula, which sends mechanism, refers to that main controller can be according to specific business demand, to transmitting
Antenna progress is type recombined freely to dispatch, and is transmitted signal；When realizing, main control defines by dispatching algorithm and according to priority
The scheduling strategy of realization is controlled the transmission of signal.
The beneficial effects of the present invention are：(1) present invention solves 125K signal overlaps area homogenous frequency signal interference problem；
(2) present invention uses asynchronous transmission mechanism, i.e., only sends signal, different time-gap by an antenna therein in same time slot
Between by the way of switching in turn, so as to ensure that 125K signals send real-time；(3) present invention can increase positioning model
Enclose, improve positioning precision, improve the flexibility of scheduling, reduce implementation cost, reduce overall power consumption, there is wide coverage, determine
The features such as position precision is high, scheduling is flexible and implementation cost is low, low in energy consumption.
Brief description of the drawings
Fig. 1 is the configuration diagram of the embodiment of the present invention；
Fig. 2 is the more ID of multimode of the present invention transmission schematic diagram for sending mechanism in turn；
Fig. 3 is the transmission schematic diagram for sending mechanism in turn that the present invention is the identical ID of multimode；
Fig. 4 is that the free scheduling formula of the present invention sends the transmission schematic diagram of mechanism.
Embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This：
Embodiment：A kind of 125K drivers based on either simplex multimode include：If main controller, several radiofrequency emitting modules,
Dry root antenna, power module；Main controller is connected with radiofrequency emitting module；Radiofrequency emitting module is connected with antenna；Power module point
It is not connected with main controller, radiofrequency emitting module, is powered.Main controller uses the nRF52832, nRF52832 of NORDIC companies
On be integrated with BLE4.2 functions, support is configured by BLE to driver parameter by eating dishes without rice or wine.Radiofrequency emitting module uses
IRF7389 chips.
In the present embodiment, the quantity of radiofrequency emitting module and antenna is 2, that is, forms the 125K excitations based on either simplex bimodulus
Device, as single main controller add 2 radiofrequency emitting modules and 2 antennas, as shown in figure 1, the Organization Chart is either simplex bimodulus
Embodiment, as can be seen that relative to either simplex single mode mechanism from Organization Chart, add a radio frequency sending module and a hair
Penetrate antenna.
A kind of transmission mechanism of the 125K drivers based on either simplex multimode, using asynchronous transmission mechanism, is switched using time slot
Mode send signal, i.e., signal can only be sent by antenna in same time slot, using cutting in turn between different time-gap
The mode changed is transmitted signal.Described transmission mechanism can be directed to practical application scene and select, including following three kinds of transmitters
System：The more ID's of multimode sends mechanism, the identical ID of the multimode mechanism of transmission in turn, freely dispatches formula transmission mechanism in turn.
(1) the more ID of multimode transmission mechanism in turn：
The more ID of the multimode mechanism of transmission in turn has referred to more antennas, and every antenna has respective driver ID,
In external send, each ID externally sends signal in turn by way of queuing, so each ID is right within a certain period of time
The number of outer transmission is all identical, and this mechanism is applicable to arrange multiple anchor points and anchor point needs demarcation of location
Situation.
Assuming that have 2 localization regions, and not only signal has driver ID that is overlapping, and needing different for 2 localization regions
To make a distinction, we can be respectively defined as ID1 and ID2, in this case, just completely solved and asked using multimode mechanism
Topic, we can use 2 multimode antennas to send signals, and we are defined as A1 and A2 for 2 antennas, are then sent and believed with 2 time slots
Number, we are defined as TS1 and TS2, and in TS1 this time slot, we by A1 antennas send driver ID1 signals, in TS2 time slots
We send driver ID2 signals by A2 antennas, have so both avoided the interference in signal overlap area, and have also reached and be accurately positioned
Demand, sending time slots are as shown in Figure 2.
(2) the identical ID of multimode transmission mechanism in turn：
The identical ID of the multimode mechanism of transmission in turn refers to send same driver ID numberings, this feelings by more antennas
Scape designs, the identical ID of multimode sending mode and the more ID of multimode hair typically to meeting the needs of increasing orientation range
Send pattern essentially identical, be a difference in that the multimode antenna being connected with controller sends identical ID signals.
Assuming that there is 2 localization regions, this 2 localization regions only need a kind of driver ID, 2 multimode antennas we define
For A1 and A2, signals then are sent with 2 time slots, we are defined as TS1 and TS2, and we pass through A1 antennas in TS1 this time slot
Send driver ID signals, TS2 time slots we by A2 antennas send identical driver ID signals, pass through this transmitter
System, in the case where not increasing amount controller, adds exciter signal coverage, while it also avoid multiple antenna letters
The problem of number area of coverage signal interference, sending time slots are as shown in Figure 3.
(3) freely dispatch formula and send mechanism：
Free scheduling formula sends mechanism and refers to that main controller can be carried out type recombined according to specific business demand to transmitting antenna
Freely dispatch, because multimode antenna has fully met what can freely be dispatched by same master controller scheduling controlling
Precondition.Why free scheduling mechanism is neededBecause what different driver ID had different real-times and priority will
Ask, this is just needed by main control by certain dispatching algorithm and strategy to realize the demand under different scheduling scenarios.
Assuming that there are 3 regions to need to position, and 3 different driver ID are needed to make a distinction, we define respectively
For ID1, ID2 and ID3, when using either simplex multimode mechanism, because 3 ID are to send letter by same master controller
Number, and the requirement of real-time highest that driver ID1 is sent, ID2 take second place, ID3 requirement of real-time is minimum, and we define one first
Total transmission cycle T S, 3 ID1 signals are sent within a TS cycle, send 2 ID2 signals, send 1 ID3 signal, this
The scheduling strategy that three driver ID define realization according to priority is just met, its reference view is as shown in Figure 4.
In the present invention, the limited amount system of described radiofrequency emitting module and antenna, a main controller can drive simultaneously
The quantity of dynamic radio frequency sending module is restricted as follows, specific as follows：
Calculating the quantity for the radio frequency module that a controller can drive simultaneously needs to consider following parameter：Send baud rate
(BPS), driver ID bit numbers (BITS), each second driver ID transmission times (ST), the driver time that each second sends
Number represents that the final radio frequency module quantity that can be driven is represented with M, then represents as follows with the mode of formula with N：
N=BPS/BITS
M=N/ST
Assuming that we send radiofrequency signal using 4096 (BPS=4096) speed, and the ID data of driver are grown
Spend for 6 bytes (BITS=6*8), then times N=4096/ (6*8) ≈ 85 (secondary) that driver ID can be sent in one second.
Assuming that multiple driver ID requirement of real-time is to send 4 times (ST=4) in one second, then a controller can control simultaneously
Antenna number be M=85/4 ≈ 21 (root), then it represents that antenna can at most possess 21, and this quantity meets enough in fact
The demand of driver positioning function.
In summary, the present invention has the following characteristics that：
1. solves problem of co-channel interference
For driver, usually using the signal of 125K frequency ranges as pumping signal, sent by the form of broadcast
The ID number of oneself, so as to wake up the equipment of entering signal scope, because simultaneously from the aspect of frequency range, bandwidth, functional requirement
The anti-interference methods such as multichannel, odd encoder are not taken into account that, this just brings a problem, exactly when 125K signals have overlay region
When, as shown in FIG., can be by severe jamming, so that setting into the signaling zone can not be waken up between 125K signal of eating dishes without rice or wine
It is standby, or the equipment in entering signal area can not correctly identify the broadcast ID of driver.In order to solve this problem, patent of the present invention
The implementation of either simplex multimode is highlighted, multimode antenna is controlled by a main controller, using asynchronous transmission mechanism, i.e., same
Signal is only sent by an antenna therein in time slot, between different time-gap by the way of switching in turn, so as to ensure that
The real-time that 125K signals are sent.
2. add signal cover
We are generally to improve covering for exciter signal by adjusting the transmit power of driver under single mode case
Lid scope, this method are deposited the drawbacks of certain, are first the finiteness of transmit power adjustment, for example are increased by way of boosting
Transmission power, and master control borad boosting scope has certain limitations, and is also exactly the efficiency meeting of power conversion after power ascension
Decline therewith, or even the power bracket that power module can bear can be exceeded, master control borad overall power consumption can also increase, so as to bring
The accessory problems such as master control borad overheat.And multimode antenna mechanism is used, as shown in FIG., can in the case where not increasing power consumption
Easily to improve signal cover, and without worrying the problem of signal overlap area disturbs.
3. improve positioning precision
Needing to identify the scope that driver antenna 1 covers and the model that driver antenna 2 covers respectively in some cases
Enclose, and require that coverage is more accurate, in this case we driver ID and driver antenna can be done matching and
Numbering, it is set only to send a driver ID signal in same time slot, so as to solve overlay region signal interference problem,
And can improves driver positioning precision.
4. freedom and flexibility are dispatched
Main controller can be type recombined to transmitting antenna progress freely to dispatch according to specific business demand.What is type recombined
Freely dispatch, it is assumed that there are the multiple driver ID in multiple regions to need to position, and some zone location requirement of real-time are higher,
For some zone location requirement of real-time than relatively low, some regions need interim modification to send excitation when some external event arrives
The frequency of device ID signals to improve requirement of real-time, and some regions may be because the conditions such as some external event or time-out and
There is no the needs of positioning, and at this time connecing needs a control core that can realize all scheduling strategies, and this is controlled
Core is exactly our described control panels in figure, and this scheduling strategy is not realize at all in single mode scheme, only
This type recombined free scheduling feature can be completed under this multimode mechanism.
5. reduce implementation cost
This multimode mechanism reduces implementation cost, such as positioned with 2 single mode controllers for single mode mechanism
2 regions use multimode mechanism, it is necessary to 2 sets of control panels, 2 sets of antennas, as long as 2 sets of antennas of a set of control panel, have saved a set of
The cost of control panel, so as to significantly reduce system implementation cost.
6. reduce system power dissipation
Relative to single mode device, this multimode mechanism also reduces overall power consumption, in single mode mechanism, due to using multiple
Control panel controls the mechanism of respective antenna, can not timesharing scheduling, relative to multimode mechanism, control panel and unordered transmission are all brought
Extra power consumption penalty, thus multi-module machine system significantly reduce the overall power consumption of system.
The technical principle for being the specific embodiment of the present invention and being used above, if conception under this invention institute
The change of work, during the spirit that its caused function is still covered without departing from specification and accompanying drawing, it should belong to the present invention's
Protection domain.
Claims (10)
- A kind of 1. 125K drivers based on either simplex multimode, it is characterised in that including：Main controller, several radiofrequency emitting modules, Some antennas, power modules；Main controller is connected with radiofrequency emitting module；Radiofrequency emitting module is connected with antenna；Power module It is connected respectively with main controller, radiofrequency emitting module, is powered.
- A kind of 2. 125K drivers based on either simplex multimode according to claim 1, it is characterised in that：Described radio frequency hair It is identical with the quantity of antenna to penetrate module, preferred amount 2.
- A kind of 3. 125K drivers based on either simplex multimode according to claim 1, it is characterised in that：Described main controller It is preferred that using the nRF52832 of NORDIC companies, BLE4.2 functions are integrated with nRF52832, support to join driver by BLE Number is by eating dishes without rice or wine to be configured.
- A kind of 4. 125K drivers based on either simplex multimode according to claim 2, it is characterised in that：Described radio frequency hair Penetrate module and preferably use IRF7389 chips.
- A kind of 5. 125K drivers based on either simplex multimode according to claim 1, it is characterised in that：Described radio frequency hair Module and the limited amount system of antenna are penetrated, the quantity for the radio frequency sending module that a main controller can drive simultaneously is made as follows About, formula is as follows：N=BPS/BITSM=N/STWherein, BPS for send baud rate, BITS be driver ID bit numbers, ST be each second driver ID transmission times, N The driver number sent for each second, M are the quantity of radio frequency sending module.
- A kind of 6. transmission mechanism of the 125K drivers based on either simplex multimode, it is characterised in that：Using asynchronous transmission mechanism, utilize The mode of time slot switching sends signal, i.e., can only send signal by an antenna in same time slot, be adopted between different time-gap Signal is transmitted with the mode switched in turn.
- 7. transmission mechanism according to claim 6, it is characterised in that：Described transmission mechanism can be directed to practical application scene Selection, including following three kinds of transmissions mechanism：The more ID of multimode in turn send mechanism, the identical ID of the multimode mechanism of transmission in turn, from Mechanism is sent by scheduling formula.
- 8. transmission mechanism according to claim 6, it is characterised in that：The more ID of described multimode transmitter in turn is made as： Under more antenna conditions, and every antenna carries respective driver ID, and in external send, each driver ID passes through row The mode of team externally sends signal in turn, and the transmission mechanism is applicable to arrange multiple anchor points and anchor point needs to distinguish position The application scenarios put.
- 9. transmission mechanism according to claim 6, it is characterised in that：The identical ID of the described multimode mechanism of transmission in turn and The more ID of the multimode mechanism of transmission in turn is similar, and both differences are the driver ID sent difference, the identical ID of multimode wheel Stream transmission mechanism is to send same driver ID numberings by more antennas.
- 10. transmission mechanism according to claim 6, it is characterised in that：Described free scheduling formula sends mechanism and refers to lead Control device can according to specific business demand, transmitting antenna is carried out it is type recombined freely dispatch, be transmitted signal；When realizing, master control The scheduling strategy that system defines realization by dispatching algorithm and according to priority is controlled the transmission of signal.
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| CN201710659035.XA CN107659323A (en) | 2017-08-04 | 2017-08-04 | A kind of 125K drivers and its transmission mechanism based on either simplex multimode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110365358A (en) * | 2019-07-15 | 2019-10-22 | 常州爱索电子有限公司 | A kind of super positioning driver of RFID |
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Application publication date: 20180202 |