CN204577594U - A kind of Path Recognition card and wake-up circuit thereof - Google Patents
A kind of Path Recognition card and wake-up circuit thereof Download PDFInfo
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- CN204577594U CN204577594U CN201520291842.7U CN201520291842U CN204577594U CN 204577594 U CN204577594 U CN 204577594U CN 201520291842 U CN201520291842 U CN 201520291842U CN 204577594 U CN204577594 U CN 204577594U
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Abstract
The utility model discloses a kind of Path Recognition card and wake-up circuit thereof, this wake-up circuit comprises: pcb board; MCU; At least two for receiving the Anneta module of each road wake-up signal, described Anneta module comprises at least one antenna; At least two are connected with corresponding Anneta module respectively, and the processing unit that the road wake-up signal for receiving respective antenna module processes; Be connected with at least two processing unit and MCU respectively, and wake chip up for what export wakeup interrupt signal to described MCU during wake-up signal after receiving the process of arbitrary road.Implement the technical solution of the utility model, receive multichannel wake-up signal by adopting multiple antennas and can reduce Path Recognition card by the impact of installing, place, thus effectively promote wake-up circuit wake performance up, make it in varying environment application, improve Path Recognition success rate.
Description
Technical field
The utility model relates to intelligent transportation field, particularly relates to a kind of Path Recognition card and wake-up circuit thereof.
Background technology
All need that there is arousal function in circuit based on the Path Recognition card waking mode of operation up at present; in order to ensure the correct reception of BST signal (signal from trackside mark base station); according to Standard; it is low compared with its receiving sensitivity that it wakes sensitivity up; BST signal can be correctly received after guaranteeing to wake up; therefore at work, the performance of Path Recognition card is all limited to and overall wakes sensitivity up.
At present, the design of wake-up circuit often adopts single antenna, in actual use due to the installation of Path Recognition card, the impact of card placement, cause it to wake performance up and receive impact, and then cause the actual serviceability of whole product to reduce, make it cannot play its normal performance in path identifying system application, even reduce ID of trace route path success rate.
Utility model content
The technical problems to be solved in the utility model is, wakes the low defect of sensitivity up for the above-mentioned of prior art, provides a kind of and wakes highly sensitive Path Recognition card and wake-up circuit thereof up.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of wake-up circuit, comprise pcb board, also comprise:
Be arranged on described pcb board
MCU；
At least two for receiving the Anneta module of each road wake-up signal, described Anneta module comprises at least one antenna;
At least two are connected with corresponding Anneta module respectively, and the processing unit that the road wake-up signal for receiving respective antenna module processes;
Be connected with at least two processing unit and MCU respectively, and wake chip up for what export wakeup interrupt signal to described MCU during wake-up signal after receiving the process of arbitrary road.
In wake-up circuit described in the utility model, described antenna is 5.8G antenna.
In wake-up circuit described in the utility model, the quantity of described Anneta module is at least two, and described Anneta module also comprises selector switch, at least two antennas connect at least two selecting sides of described selector switch respectively, and the stiff end of described selector switch connects the input of described processing unit.
In wake-up circuit described in the utility model, described antenna is monopole antenna.
In wake-up circuit described in the utility model, the spacing of adjacent two Anneta modules on pcb board is greater than predeterminable range.
In wake-up circuit described in the utility model, the shape of described pcb board is quadrangle, and the quantity of described Anneta module is two, and two Anneta modules are arranged in diagonal angle on described pcb board.
In wake-up circuit described in the utility model, wherein a part of Anneta module is arranged on the top layer of pcb board, and wherein another part Anneta module is arranged on the bottom of pcb board.
In wake-up circuit described in the utility model, described processing unit comprises the filter, wave detector and the amplifier that connect successively.
The utility model also constructs a kind of Path Recognition card, comprises housing, is packaged with above-mentioned wake-up circuit in housing.
Implement the technical solution of the utility model, by adopting multiple antennas to receive multichannel wake-up signal, Path Recognition card can be reduced by the impact of installing, place, thus effectively promoting waking up and communication performance of wake-up circuit, make it improve the success rate of ID of trace route path, guarantee accurate charge.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the logic diagram of the utility model wake-up circuit embodiment one;
Fig. 2 is the logic diagram of the utility model wake-up circuit embodiment two;
Fig. 3 A wakes the sequential chart that chip works in the polling mode up;
Fig. 3 B wakes the sequential chart that chip works in switching mode up;
Fig. 4 is the structure chart of Anneta module and pcb board position relationship embodiment one in the utility model wake-up circuit;
Fig. 5 is the structure chart of Anneta module embodiment one in the utility model wake-up circuit.
Embodiment
Fig. 1 is the logic diagram of the utility model wake-up circuit embodiment one, this wake-up circuit comprise pcb board (not shown) and be arranged on this pcb board at least two Anneta modules 10 ..., 10 ', at least two processing unit 20 ..., 20 ', wake chip 30 and MCU40 up.Wherein, Anneta module 10 ..., 10 ' for receiving each road wake-up signal.Each processing unit (such as processing unit 20) is all connected with respective antenna module (such as Anneta module 10), and processes for the road wake-up signal received respective antenna module (such as Anneta module 10).Wake up chip 30 respectively with at least two processing unit 20 ..., 20 ' and MCU40 be connected, and for receive arbitrary road process after wake-up signal time export wakeup interrupt signal to MCU.
In the Path Recognition card of the present embodiment, Anneta module comprises at least one antenna, and antenna preferably adopts 5.8G antenna, and Path Recognition signal is 5.8G signal simultaneously.This frequency band signals directivity is very strong, although its antenna adopts omnidirectional's patten's design, because so-called " omnidirectional " antenna pattern is not a complete omnidirectional antenna, certain depression is there is in some direction, because placement location is different in using if actual, and easily cause situation about can not wake up, after the present embodiment adopts and wakes Anneta module design more up, any antenna receives wake-up signal can make Path Recognition card enter wake-up states, ensure that card performance in actual use.
Fig. 2 is the logic diagram of the utility model wake-up circuit embodiment two, in this embodiment, wake up chip 30 select model be AS3933 wake chip up, it can receive at most three road wake-up signals, correspondingly, the quantity of Anneta module, processing unit is also set to three respectively.Wherein, processing unit 20 specifically comprises the filter 21, wave detector 22 and the amplifier 23 that connect successively.Correspondingly, other two processing unit also comprise the filter, wave detector and the amplifier that connect successively respectively.
In the above-described embodiments, also it should be noted that, in order to ensure low-power consumption requirement, configurablely waking the corresponding mode of operation of chip 30 up, this wakes chip 30 up primarily of three kinds of mode of operations: mode standard, poll (scanning) pattern, switching mode, illustrate this Three models below respectively:
Mode standard: all passages waking chip 30 under this pattern up all work, as long as a wherein road 14kHz wake-up signal detected, then wakes chip 30 up and exports wakeup interrupt signal.In addition, due under this pattern because three passages are all in running order, therefore power consumption is larger;
Poll pattern: three inputs waking chip 30 under this pattern up at a time only have a passage in normal work, as shown in Figure 3A, as long as one of them Air conduct measurement is to 14kHz wake-up signal, then chip 30 of waking up exports wakeup interrupt signal.In addition, because the power consumption under this pattern is equivalent to single channel operating power consumption, therefore power consumption is lower;
Switching mode: all passages waking chip 30 under this pattern up are all opened at synchronization, synchronization is closed, and as shown in Figure 3 B, and the shut-in time can pass through register configuration.If one of them passage is detecting 14kHz wake-up signal, then waking chip 30 up and exporting wakeup interrupt signal.It should be noted that, the power consumption under this pattern comparatively mode standard is low.
For specifically waking chip 30 up, under mode standard, if only select a channels operation, can only selector channel 1.If desired select two passages, then need forbiden channel 3, select passage 1 and passage 2.Under poll pattern and switching mode, if desired two passages, then need forbiden channel 2, selects passage 1 and passage 3.
Preferably, in order to prevent one of them Anneta module because placement location impact and blocked or performance not good, can, by least two Anneta module scattering devices on pcb board, make the spacing of adjacent two Anneta modules on pcb board be greater than predeterminable range.Certainly, when pcb board is double-layer PCB board, also wherein a part of Anneta module can be arranged on the top layer of pcb board, wherein another part Anneta module is arranged on the bottom of pcb board.
Such as, in an object lesson, as shown in Figure 4, the quantity of Anneta module is two, and the shape of pcb board 50 is rectangle, and these two Anneta modules 10,10 ' are arranged in diagonal angle, and Anneta module 10 is arranged on the top layer of pcb board 50, Anneta module 10 ' is arranged on the bottom of pcb board 50.Certainly, in other embodiments, pcb board also can be the quadrangle of other shape.
About Anneta module, it should be noted that, although above embodiment be all only comprise that an antenna is described for an Anneta module be, but in other embodiments of the present invention, an Anneta module also can comprise multiple antenna, and selects corresponding antenna to carry out work by the switching of selector switch.Such as, in the embodiment of the Anneta module shown in Fig. 5, this Anneta module comprises the selector switch K1 that 11,12,13,14 and one one, four antennas drag four, these four antennas 11,12,13,14 connect four selecting sides of selector switch K1 respectively, and the stiff end of selector switch K1 connects the input of respective handling device.
Finally, the antenna in Anneta module is such as 5.8G antenna, and antenna is preferably monopole antenna, such as snakelike antenna or helical aerials, can save the area taking pcb board like this.
The utility model also constructs a kind of Path Recognition card, and this Path Recognition card comprises housing, is packaged with above-described wake-up circuit in this housing.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (9)
1. a wake-up circuit, comprises pcb board, it is characterized in that, also comprises:
Be arranged on described pcb board
MCU；
At least two for receiving the Anneta module of each road wake-up signal, described Anneta module comprises at least one antenna;
At least two are connected with corresponding Anneta module respectively, and the processing unit that the road wake-up signal for receiving respective antenna module processes;
Be connected with at least two processing unit and MCU respectively, and wake chip up for what export wakeup interrupt signal to described MCU during wake-up signal after receiving the process of arbitrary road.
2. wake-up circuit according to claim 1, is characterized in that, described antenna is 5.8G antenna.
3. wake-up circuit according to claim 1, it is characterized in that, the quantity of described Anneta module is at least two, and described Anneta module also comprises selector switch, at least two antennas connect at least two selecting sides of described selector switch respectively, and the stiff end of described selector switch connects the input of described processing unit.
4. wake-up circuit according to claim 2, is characterized in that, described antenna is monopole antenna.
5. wake-up circuit according to claim 1, is characterized in that, the spacing of adjacent two Anneta modules on pcb board is greater than predeterminable range.
6. the wake-up circuit according to any one of claim 1-5, is characterized in that, the shape of described pcb board is quadrangle, and the quantity of described Anneta module is two, and two Anneta modules are arranged in diagonal angle on described pcb board.
7. the wake-up circuit according to any one of claim 1-5, is characterized in that, wherein a part of Anneta module is arranged on the top layer of pcb board, and wherein another part Anneta module is arranged on the bottom of pcb board.
8. the wake-up circuit according to any one of claim 1-5, is characterized in that, described processing unit comprises the filter, wave detector and the amplifier that connect successively.
9. a Path Recognition card, is characterized in that, comprises housing, is packaged with the wake-up circuit described in described any one of claim 1-8 in housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291842.7U CN204577594U (en) | 2015-05-07 | 2015-05-07 | A kind of Path Recognition card and wake-up circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291842.7U CN204577594U (en) | 2015-05-07 | 2015-05-07 | A kind of Path Recognition card and wake-up circuit thereof |
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| CN204577594U true CN204577594U (en) | 2015-08-19 |
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| CN201520291842.7U Active CN204577594U (en) | 2015-05-07 | 2015-05-07 | A kind of Path Recognition card and wake-up circuit thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347242A (en) * | 2016-09-30 | 2017-01-25 | 惠州市德赛西威汽车电子股份有限公司 | Method for wakening automobile separation entertainment system and device thereof |
| CN106779017A (en) * | 2016-12-29 | 2017-05-31 | 北京握奇智能科技有限公司 | A kind of compound visa card and its communication means |
-
2015
- 2015-05-07 CN CN201520291842.7U patent/CN204577594U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106347242A (en) * | 2016-09-30 | 2017-01-25 | 惠州市德赛西威汽车电子股份有限公司 | Method for wakening automobile separation entertainment system and device thereof |
| CN106347242B (en) * | 2016-09-30 | 2019-10-29 | 惠州市德赛西威汽车电子股份有限公司 | A kind of awakening method and its device of automobile separation entertainment systems |
| CN106779017A (en) * | 2016-12-29 | 2017-05-31 | 北京握奇智能科技有限公司 | A kind of compound visa card and its communication means |
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