CN201758179U - Automobile remote control receiving device - Google Patents
Automobile remote control receiving device Download PDFInfo
- Publication number
- CN201758179U CN201758179U CN2010201126216U CN201020112621U CN201758179U CN 201758179 U CN201758179 U CN 201758179U CN 2010201126216 U CN2010201126216 U CN 2010201126216U CN 201020112621 U CN201020112621 U CN 201020112621U CN 201758179 U CN201758179 U CN 201758179U
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- China
- Prior art keywords
- antenna
- signal
- frequency range
- demodulator circuit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an automobile remote control receiving device comprising an antenna between boards, a single chip microcomputer, a first demodulation circuit and a second demodulation circuit. The antenna can be disposed on the metal layer of the multilayer printed circuit board. The first demodulation circuit is designed to supporting the signal of the first frequency range, and the second demodulation circuit is designed to supporting the signal of the second frequency range. The first demodulation circuit and the second demodulation circuit are respectively connected with the single chip microcomputer. By using the automobile remote control receiving device, the interface of the controller can be reduced, the costs of extra wires (such as external antenna leads) can be reduced, the possibility of the interference between wires and the communication failure caused by the shielding effect can be reduced, the costs of increasing the individual parts and the costs of the installation of the independent antenna can be reduced. In the utility model, the hardware circuit design is enhanced, thereby the signal of the single frequency range as well as the signal of the double frequency range can be received.
Description
Technical field
The utility model relates to a kind of automobile remote-control receiving system, relates in particular to a kind of double frequency automobile remote-control receiving system.
Background technology
Automobile-used remote control system has had on existing kart market generally to be used, and being used of wireless remote control radio-frequency (RF) Receiving Device and remote-controlled launcher, the car owner is opened and the locking car door, open luggage boot even carry out the mode of remote control open and close vehicle window comfortable and safe.
Automobile-used remote-receiver is installed in interior of body, generally is integrated in the body electronics controller, or central control unit inside.The remote control receiving unit, by the radio frequency reception antenna, matched filter network and demodulation chip and single-chip microcomputer are formed.
According to China＜micropower (short distance) wireless device management temporary provisions〉content, what the vehicle remote control communication took is 315Mhz and two radio frequency bands of 433Mhz.Generally, the receiving system of installing in the automobile is only supported one of them frequency range.
Simultaneously, existing general radio frequency reception antenna is two kinds:
External antenna (that is, the wire harness interface being drawn the lead of extension as reception antenna) by controller;
Built-in stand-alone antenna (that is, and in controller inside, by metallic conductor element independently as reception antenna).
External antenna has increased the interface of controller and extra wire harness (external antenna lead-in wire) cost, and has increased because the phase mutual interference of wire harness or the possibility that screen effect causes Communications failure.Built-in stand-alone antenna, the production cost that has also increased the cost of parts of independent component and installed for stand-alone antenna.And existing reception antenna can only receive a kind of signal of frequency range.
The utility model content
The purpose of automobile remote-control receiving system of the present utility model is effectively to solve the above-mentioned technical problem of prior art, one double frequency automobile remote-control receiving system is provided, it comprises antenna between plate, single-chip microcomputer, first demodulator circuit and second demodulator circuit, wherein, the wiring of antenna between the enterprising andante of the metal level of multilayer board; Described first demodulator circuit is set to support the signal of first frequency range; Described second demodulator circuit is set to support the signal of second frequency range; Described first demodulator circuit links to each other with described single-chip microcomputer respectively with described second demodulator circuit.
Preferably, the number of plies of described multilayer board is 4 layers.
Preferably, the signal of described first frequency range is the 315MHz signal; The signal of described second frequency range is the 433MHz signal.
Preferably, also be connected with first match circuit between the antenna between described first demodulator circuit and plate; Also be connected with second match circuit between the antenna between described second demodulator circuit and plate.
Preferably, also be connected with first filter circuit between the antenna between described first demodulator circuit and plate; Also be connected with second filter circuit between the antenna between described second demodulator circuit and plate.
By technique scheme, the advantage of automobile remote-control receiving system of the present utility model and have a mind to effect and be:
Compare with external antenna, reduced the interface of controller and extra wire harness (external antenna lead-in wire) cost, and reduced because the phase mutual interference of wire harness or the possibility that screen effect causes Communications failure.Compare the production cost that has also reduced the cost of parts that increases independent component and installed for stand-alone antenna with built-in stand-alone antenna.Simultaneously, both compare with this, and its receptivity is more stable.The course of work that carrying out when also having avoided simultaneously different automobile types to use demarcated once more and adjust.
The utility model has strengthened hardware circuit design, has augmented two cover filtering and the demodulator circuits of supporting 315Mhz and two frequency ranges of 433Mhz in the reception antenna rear end.Promptly can receive the signal of single frequency range, also can receive the signal of two-band simultaneously.
Description of drawings
Accompanying drawing shows embodiment of the present utility model, and with specification, is used for explaining principle of the present utility model.By the detailed description of doing below in conjunction with accompanying drawing, can more be expressly understood the purpose of this utility model, advantage and feature, wherein, identical feature is used identical label.
Fig. 1 is the schematic diagram of external antenna in the prior art.
Fig. 2 is the schematic diagram of built-in aerial in the prior art.
Fig. 3 is the connection diagram of automobile remote-control receiving system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
The main parts size that the utility model adopts comprises manufacturer and specifically model is as follows:
1. first demodulator circuit: like special Mel ATA5721 (315MHz);
2. second demodulator circuit: like special Mel ATA5722 (433.92MHz)
3. the matching network of the main SAW-filter sound of coupling/filter circuit surface filtering chip and surface-mount resistor electric capacity composition constitutes.
As shown in Figure 3, automobile remote-control receiving system of the present utility model comprises: antenna between plate, and single-chip microcomputer, first demodulator circuit and second demodulator circuit, wherein, the wiring of antenna between the enterprising andante of the metal level of 4 layer printed circuit boards; Described first demodulator circuit is set to support that frequency is the 315MHz signal; Described second demodulator circuit is set to support that frequency is the 433MHz signal; Described first demodulator circuit links to each other with described single-chip microcomputer respectively with described second demodulator circuit.
Also be connected with the first coupling/filter circuit between the antenna between described first demodulator circuit and plate; Also be connected with the second coupling/filter circuit between the antenna between described second demodulator circuit and plate.
Be preferred embodiment of the present utility model only below, be not limited to the utility model.In the above-described embodiments, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. an automobile remote-control receiving system comprises: antenna between plate, and single-chip microcomputer, first demodulator circuit and second demodulator circuit, wherein, the wiring of antenna between the enterprising andante of the metal level of multilayer board;
Described first demodulator circuit is set to support the signal of first frequency range;
Described second demodulator circuit is set to support the signal of second frequency range;
Described first demodulator circuit links to each other with described single-chip microcomputer respectively with described second demodulator circuit.
2. remote-receiver according to claim 1 is characterized in that, the number of plies of described multilayer board is 4 layers.
3. remote-receiver according to claim 1 is characterized in that, the signal of described first frequency range is the 315MHz signal; The signal of described second frequency range is the 433MHz signal.
4. according to each described remote-receiver among the claim 1-3, it is characterized in that, also be connected with first match circuit between the antenna between described first demodulator circuit and plate; Also be connected with second match circuit between the antenna between described second demodulator circuit and plate.
5. according to each described remote-receiver among the claim 1-3, it is characterized in that, also be connected with first filter circuit between the antenna between described first demodulator circuit and plate; Also be connected with second filter circuit between the antenna between described second demodulator circuit and plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201126216U CN201758179U (en) | 2010-02-11 | 2010-02-11 | Automobile remote control receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201126216U CN201758179U (en) | 2010-02-11 | 2010-02-11 | Automobile remote control receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758179U true CN201758179U (en) | 2011-03-09 |
Family
ID=43645468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201126216U Expired - Lifetime CN201758179U (en) | 2010-02-11 | 2010-02-11 | Automobile remote control receiving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758179U (en) |
-
2010
- 2010-02-11 CN CN2010201126216U patent/CN201758179U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |