CN204681392U - A kind of vehicular transreceiver of Auto-matching reception antenna type - Google Patents
A kind of vehicular transreceiver of Auto-matching reception antenna type Download PDFInfo
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- CN204681392U CN204681392U CN201520371281.1U CN201520371281U CN204681392U CN 204681392 U CN204681392 U CN 204681392U CN 201520371281 U CN201520371281 U CN 201520371281U CN 204681392 U CN204681392 U CN 204681392U
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Abstract
The utility model relates to a kind of vehicular transreceiver of Auto-matching reception antenna type, comprises and has for the input end of sensed current signal and the microprocessor module of control signal output, the radio receiver module be connected with microprocessor module, the antenna supply module be connected with exterior antenna and the reception antenna interface module be connected with the signal input part of radio receiver module and the power supply output of antenna supply module; Antenna supply module also comprises the feedback voltage input, the current detecting output of connection signal test side and the enable input of connection control signal output that are connected with power supply output by feedback circuit.The vehicular transreceiver of a kind of Auto-matching reception antenna type of the present utility model is by obtaining and judging that the feedback current of antenna supply module effectively identifies active reception antenna and passive reception antenna, and Auto-matching antenna type.Save the great number research and development testing expense of repetition, improve the resource utilization of producing and researching and developing.
Description
Technical field
The utility model relates to a kind of auxiliary system, particularly a kind of vehicular transreceiver of Auto-matching reception antenna type.
Background technology
Vehicular transreceiver is as entertainment systems common in vehicle, because its is simple, easy-to-use, practical, obtains the favor of many clients.
There is various vehicle-mounted radio antenna on the market at present, in these reception antennas, there is different scheme type, wherein can be divided into passive reception antenna and the large class of active reception antenna two according to the need of external power supply is powered.
Due to the circuit parameter that passive reception antenna is different with active reception antenna, when arrange in pairs or groups radio and tape player at same type time, the radio reception effect that two species diversity are very large can be produced.For terminal client, this means that product also exists very large inconsistency, this species diversity does not allow existence.
Traditional solution researches and develops different radio and tape players according to dissimilar antenna.But this method must spend double research and development testing expense, and for the different designs of only reception antenna input.For vehicular manufacturer, this can cause R & D Cost to increase, and the manufacturing expense of vehicle can be caused to increase, and mean that the price of final vehicle can improve, this result terminal client is also unacceptable.
Summary of the invention
The purpose of this utility model is the defect in order to overcome above-mentioned background technology, provides a kind of vehicular transreceiver of Auto-matching reception antenna type.
A vehicular transreceiver for Auto-matching reception antenna type, comprises and has for the input end of sensed current signal and the microprocessor module of control signal output, the radio receiver module be connected with described microprocessor module, the antenna supply module be connected with exterior antenna and the reception antenna interface module be connected with the signal input part of described radio receiver module and the power supply output of described antenna supply module; Described antenna supply module is also comprised the feedback voltage input be connected with described power supply output by feedback circuit, the current detecting output connecting described input end and connects the enable input of described control signal output.
Further, described reception antenna interface module is provided with RF signaling interface.
Further, also comprise one to power the independently-powered interface that output is connected with described antenna supply module.
Preferably, described feedback circuit comprises the first feedback resistance and the second feedback resistance that two ends connect the series connection of described power supply output and ground connection respectively, and the node between described first feedback resistance and the second feedback resistance connects described feedback voltage input; A feedback capacity is also connected with between described feedback voltage output and described power supply output.
The vehicular transreceiver of a kind of Auto-matching reception antenna type of the present utility model is by obtaining and judging that the feedback current of antenna supply module effectively identifies active reception antenna and passive reception antenna, and Auto-matching antenna type.Save the great number research and development testing expense of repetition, improve the resource utilization of producing and researching and developing.
Accompanying drawing explanation
Fig. 1 is the module principle figure in the utility model embodiment one.
Fig. 2 is the circuit diagram of microprocessor module in the utility model embodiment one and antenna supply module.
Embodiment
In order to allow those skilled in the art more understand the technical solution of the utility model, be further described below in conjunction with the vehicular transreceiver of the drawings and specific embodiments to Auto-matching reception antenna type of the present utility model.
A vehicular transreceiver for Auto-matching reception antenna type, as shown in Figure 1, comprises box body 4 and is accommodated in microprocessor module 1, antenna supply module 2 and the radio receiver module 3 inside box body 4.Wherein box body 4 is provided with the antenna interface module 41 be connected with exterior antenna, antenna interface module 41 adopts RF signaling interface, and interface inwardly distinguishes antenna supply module 2 and radio receiver module 3.Microprocessor module 1 obtains the feeder ear current signal that antenna supply module 2 feeds back, thus judges the type of exterior antenna 5, and according to the operating state of judged result control antenna supply module 2 and wireless mode of operation.
Concrete, microprocessor module 1 comprises input end ADTG and the control signal output CTRL of sensed current signal as shown in Figure 2; Antenna supply module 2 comprises power supply output VOUT, feedback voltage input ADJ, current detecting output CSO, enable input EN, earth terminal GND, power input VIN.Wherein, power supply output VOUT is connected to antenna interface module 41, is connected on feedback voltage input ADJ by a feedback circuit simultaneously.Current detecting output CSO is then connected on the input end ADTG of microprocessor module 1.Meanwhile, the control signal output CTRL of microprocessor module 1 is connected to the enable input EN of antenna supply module 2.The power input VIN of antenna supply module 2 is then connected to radio and tape player power supply place.
Preferably, in order to input current and the output current of stabilized antenna supply module 2, be connected with filter capacitor C2, C3 of a ground connection at power input VIN and the power supply output VOUT of antenna supply module 2.Meanwhile, be also connected with filter capacitor C4 and the divider resistance R3 of ground connection at current detecting output CSO, protection microprocessor module 1 while ensureing signal stabilization.
The built-in AD conversion module of detection signal input of microprocessor module 1, is converted to digital signal by the current analog signal that current detecting output CSO exports, is for further processing by microprocessor module 1.The control signal output CTRL of microprocessor module 1 then has multiple independently control output end simultaneously, is convenient to other modules controlling vehicular transreceiver.When exterior antenna 5 accesses vehicular transreceiver, supply module will first be powered to exterior antenna 5, and now due to the difference of antenna type, the signal that feedback voltage input ADJ obtains is also different, makes the signal of current detecting output CSO also different simultaneously.For active antenna, because inside is provided with signal amplifier, antenna supply module 2 carry out actual power, therefore the value of feedback current can be larger; And passive antenna does not have signal amplifier, do not need power supply during use, even if be connected to supply module also do not have feedback signal or signal is very little, therefore, feedback current is smaller, and microprocessor module 1 judges the type of antenna according to the size of feedback current.Thus control the level height being controlled enable input EN place by control signal output CTRL, then export high level when having access to source antenna, antenna supply module 2 supplying power for outside, passive antenna is output low level then, antenna supply module 2 not supplying power for outside.
In addition, in order to compatibility has the active antenna of independently-powered cable, antenna interface module 41 can also arrange a connection and to power the independently-powered interface of output VOUT.
Preferably, described feedback circuit comprises the first feedback resistance R1 and the second feedback resistance R2 that two ends connect the series connection of described power supply output VOUT and ground connection respectively, node between described first feedback resistance R1 and the second feedback resistance R2 connects between described feedback voltage input ADJ, feedback voltage input ADJ and described power supply output VOUT and is also connected with a feedback capacity C1.
Preferably, antenna supply module 2 have employed the power supply circuits module based on NCV47711 power management chip, and micro treatment module 1 then adopts the processing module based on MB9BF404NA process chip.
By reference to the accompanying drawings execution mode of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (4)
1. a vehicular transreceiver for Auto-matching reception antenna type, is characterized in that: comprise and have for the input end of sensed current signal and the microprocessor module of control signal output, the radio receiver module be connected with described microprocessor module, the antenna supply module be connected with exterior antenna and the reception antenna interface module be connected with the signal input part of described radio receiver module and the power supply output of described antenna supply module; Described antenna supply module is also comprised the feedback voltage input be connected with described power supply output by feedback circuit, the current detecting output connecting described input end and connects the enable input of described control signal output.
2. vehicular transreceiver as claimed in claim 1, is characterized in that: described reception antenna interface module is provided with RF signaling interface.
3. vehicular transreceiver as claimed in claim 2, is characterized in that: also comprise one and to power the independently-powered interface that output is connected with described antenna supply module.
4. vehicular transreceiver as claimed in claim 1, it is characterized in that: described feedback circuit comprises the first feedback resistance and the second feedback resistance that two ends connect the series connection of described power supply output and ground connection respectively, and the node between described first feedback resistance and the second feedback resistance connects described feedback voltage input; A feedback capacity is also connected with between described feedback voltage output and described power supply output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520371281.1U CN204681392U (en) | 2015-06-02 | 2015-06-02 | A kind of vehicular transreceiver of Auto-matching reception antenna type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520371281.1U CN204681392U (en) | 2015-06-02 | 2015-06-02 | A kind of vehicular transreceiver of Auto-matching reception antenna type |
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| CN204681392U true CN204681392U (en) | 2015-09-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909585A (en) * | 2021-05-07 | 2021-06-04 | 智道网联科技(北京)有限公司 | Antenna device of intelligent networking equipment and control method |
| CN112929048A (en) * | 2021-01-27 | 2021-06-08 | 广州亚美智造科技有限公司 | Double-antenna switching circuit |
| CN114379484A (en) * | 2022-03-23 | 2022-04-22 | 智道网联科技(北京)有限公司 | Power supply control circuit and method for vehicle-mounted equipment, vehicle-mounted equipment and vehicle |
-
2015
- 2015-06-02 CN CN201520371281.1U patent/CN204681392U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112929048A (en) * | 2021-01-27 | 2021-06-08 | 广州亚美智造科技有限公司 | Double-antenna switching circuit |
| CN112929048B (en) * | 2021-01-27 | 2022-07-12 | 广州亚美智造科技有限公司 | Double-antenna switching circuit |
| CN112909585A (en) * | 2021-05-07 | 2021-06-04 | 智道网联科技(北京)有限公司 | Antenna device of intelligent networking equipment and control method |
| CN112909585B (en) * | 2021-05-07 | 2021-08-17 | 智道网联科技(北京)有限公司 | Antenna device of intelligent networking equipment and control method |
| CN114379484A (en) * | 2022-03-23 | 2022-04-22 | 智道网联科技(北京)有限公司 | Power supply control circuit and method for vehicle-mounted equipment, vehicle-mounted equipment and vehicle |
| CN114379484B (en) * | 2022-03-23 | 2022-06-10 | 智道网联科技(北京)有限公司 | Power supply control circuit and method for vehicle-mounted equipment, vehicle-mounted equipment and vehicle |
| WO2023179594A1 (en) * | 2022-03-23 | 2023-09-28 | 智道网联科技(北京)有限公司 | Power supply control circuit for on-board device, method, on-board device, and vehicle |
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