CN204408324U - 433MHz wireless launcher - Google Patents
433MHz wireless launcher Download PDFInfo
- Publication number
- CN204408324U CN204408324U CN201520162076.4U CN201520162076U CN204408324U CN 204408324 U CN204408324 U CN 204408324U CN 201520162076 U CN201520162076 U CN 201520162076U CN 204408324 U CN204408324 U CN 204408324U
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- 230000010355 oscillation Effects 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model is about a kind of 433MHz wireless launcher, its feature comprises: 12V DC power supply, high-pass filtering circuit, DF data-interface and High Amplifier Circuit, the higher-order of oscillation and radiating circuit, the model that sound surface resonator SAW selects is the model that NDR433-F11, NPN transistor VT1 select is RF01.Because radio transmission device all works in radio-frequency region, therefore very high to the requirement of device, be difficult under general amateurish condition make and debugging efforts, and the application of radiotechnics is at present more and more extensive, in order to overcome these actual conditions, described 433MHz wireless transmitter circuits employing sound surface resonator SAW frequency stabilization of the present utility model, the frequency stability of sound surface resonator is only second to crystal, its frequency stability is higher, is applicable to the transmission of wireless DF data wireless and remote control system.
Description
Technical field
The utility model belongs to wireless data communication technical field, is about a kind of 433MHz wireless launcher.
Background technology
Wireless Data Transmission is used in the field such as vehicle monitoring, remote control, remote measurement, wireless network, radio meter register, gate control system, industrial data collection, wireless identification tag, identification, non-contact RF smart card, wireless data terminal, fire safety system, wireless remote-control system, hydrometeorology monitoring, robot controlling, wireless 232 data communication, wireless 485/422 data communication, Digital Image Transmission widely.
Because radio transmission device all works in radio-frequency region, therefore very high to the requirement of device, be difficult under general amateurish condition make and debugging efforts, and the application of radiotechnics is at present more and more extensive, how unrealisticly wants to have expensive high frequency instrument equipment debugging.For these actual conditions, many professional production producers produce the wireless sending and receiving module for Wireless Data Transmission specially, the installation and debugging work of HFS is all placed in special environment and completes, user is only required to be its data encoding providing working power and will send, and just can obtain the initial data of transmitting terminal transmitting at the data output end of receiving terminal.
Described 433MHz wireless transmitter circuits employing sound surface resonator SAW frequency stabilization of the present utility model, the frequency stability of sound surface resonator is only second to crystal, and its frequency stability is higher, is applicable to the transmission of wireless DF data wireless and remote control system.
Below describe in detail 433MHz wireless launcher described in the utility model necessity involved in implementation process, guardian technique content.
Utility model content
Goal of the invention and beneficial effect: because radio transmission device all works in radio-frequency region, therefore very high to the requirement of device, be difficult under general amateurish condition make and debugging efforts, and the application of radiotechnics is at present more and more extensive, in order to overcome these actual conditions, described 433MHz wireless transmitter circuits employing sound surface resonator SAW frequency stabilization of the present utility model, the frequency stability of sound surface resonator is only second to crystal, its frequency stability is higher, is applicable to the transmission of wireless DF data wireless and remote control system.
Circuit working principle: the utility model considers the requirement of circuit Micro Energy Lose and transmission DF data, have employed ASK mode especially to modulate, when data-signal stops, reflector operating current is reduced to zero substantially, DF data-signal and circuit input end use resistance or are directly connected, and can not use capacitive coupling, otherwise DF data can not reliably be launched.DF data level can close to the real work voltage of DF data, to obtain good modulation effect.Have two transistors in circuit, NPN transistor VT1 is as higher-order of oscillation pipe, and NPN transistor VT2 is as Gao Fangguan.433MHz wireless launcher described in the utility model has larger transmitting power.In order to improve the stability of 433MHz wireless launcher, selected resistance R1 resistance is 22K Ω.433MHz wireless launcher coordinates with common 433MHz superregenrative reception module, and reliable communicating distance reaches more than 1000 meters.
Technical scheme: 433MHz wireless launcher, it comprises 12V DC power supply, high-pass filtering circuit, DF data-interface and High Amplifier Circuit, the higher-order of oscillation and radiating circuit, it is characterized in that:
DF data-interface and High Amplifier Circuit: it is made up of DF DATA IN terminal IN, resistance R2 and NPN transistor VT2, DF DATA IN terminal IN connects the base stage of NPN transistor VT2 by resistance R2, the collector electrode of NPN transistor VT2 connects the emitter of NPN transistor VT1, and the emitter of NPN transistor VT2 is connected with circuit ground GND;
The higher-order of oscillation and radiating circuit: it is by NPN transistor VT1, sound surface resonator SAW, resistance R1, higher-order of oscillation coil L2, electric capacity C1 and electric capacity C2 and transmitting antenna ANT forms, the model that NPN transistor VT1 selects is RF01, the model that sound surface resonator SAW selects is NDR433-F11, the base stage of NPN transistor VT1 connects one end of sound surface resonator SAW the 3rd pin and resistance R1, the other end of the 1st pin connecting resistance R1 of sound surface resonator SAW and one end of electric capacity C1, the emitter of NPN transistor VT1 connects the other end of electric capacity C1, sound surface resonator SAW the 2nd pin connection circuit ground GND, sound surface resonator SAW the 1st pin connects one end of higher-order of oscillation coil L2, the collector electrode of another termination NPN transistor VT1 of higher-order of oscillation coil L2, the collector electrode of NPN transistor VT1 meets transmitting antenna ANT by electric capacity C2,
A termination circuit positive pole VCC of high-pass filtering coil L1 in high-pass filtering circuit, sound surface resonator SAW the 1st pin connects the other end of high-pass filtering coil L1,12V DC power anode connection circuit positive pole VCC, and 12V DC power cathode is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit working schematic diagram of the 433MHz wireless launcher embodiment that the utility model provides.
Embodiment
According to the 433MHz wireless transmitter circuits fundamental diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in execution mode requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described associated specifications of the present utility model below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement thereof
VT1 is NPN transistor, and the model selected is RF01, requires β >=60;
VT2 is NPN transistor, and require that the characteristic frequency fT of transistor is greater than 300MHz, the model selected is power transistor in 2SC8050, requires β >=110;
SAW is sound surface resonator, and the model selected is NDR433-F11, nominal frequency is 433.92MH;
The resistance of resistance R1 is 22K Ω, and the resistance of resistance R2 is 27K Ω;
C1, C2 are ceramic disc capacitor, and its capacity is 5PF;
DC is 12V DC power supply, and available 8 joint 5# alkaline batteries are composed in series.
Circuit production main points and circuit debugging
L1 is high-pass filtering coil, L2 is higher-order of oscillation coil, and both all use 0.8mm enamelled wire, the drill bit of diameter ￠ 3mm is put down and forms around 4 circle tread flakings;
ANT is transmitting antenna, because the frequency of sound surface resonator is higher than the frequency of other elements, therefore the Copper Foil in galley can be utilized to make transmitting antenna, and no longer need to arrange separately transmitting antenna;
Require that each component down-lead should stay shorter as far as possible, first check printed circuit board (PCB) and element welding situation, should without phenomenons such as short circuit and false welderings;
Space out between 433MHz wireless launcher and receiver, carefully the spacing of adjustment higher-order of oscillation coil L2 coil, until when distance reaches 1000m, till still can receiving signal;
When circuit voltage is 12V, reflector has good launching effect; Obviously increase when voltage is greater than l2V power consumption, ERP no longer significantly improves.Want to obtain better launching effect and transmission range, just must connect transmitting antenna, transmitting antenna ANT selects the telescopic antenna of long 20cm, is preferably erected by transmitting antenna ANT during use;
Attention: when 433MHz wireless launcher works, can't go to touch transmitting antenna ANT with finger, otherwise NPN transistor VT1 higher-order of oscillation pipe easily burns because of overheated.
Circuit components layout of the present utility model, circuit structure design, its shape and size etc. of outward appearance are not all key technologies of the present utility model; neither the claimed technology contents of the utility model; because not affecting the utility model specific implementation process, therefore do not illustrate one by one in the description.
Claims (1)
1. a 433MHz wireless launcher, it comprises 12V DC power supply, high-pass filtering circuit, DF data-interface and High Amplifier Circuit, the higher-order of oscillation and radiating circuit, it is characterized in that:
Described DF data-interface and High Amplifier Circuit are made up of DF DATA IN terminal IN, resistance R2 and NPN transistor VT2, DF DATA IN terminal IN connects the base stage of NPN transistor VT2 by resistance R2, the collector electrode of NPN transistor VT2 connects the emitter of NPN transistor VT1, and the emitter of NPN transistor VT2 is connected with circuit ground GND;
The described higher-order of oscillation and radiating circuit are by NPN transistor VT1, sound surface resonator SAW, resistance R1, higher-order of oscillation coil L2, electric capacity C1 and electric capacity C2 and transmitting antenna ANT forms, the model that NPN transistor VT1 selects is RF01, the model that sound surface resonator SAW selects is NDR433-F11, the base stage of NPN transistor VT1 connects one end of sound surface resonator SAW the 3rd pin and resistance R1, the other end of the 1st pin connecting resistance R1 of sound surface resonator SAW and one end of electric capacity C1, the emitter of NPN transistor VT1 connects the other end of electric capacity C1, sound surface resonator SAW the 2nd pin connection circuit ground GND, sound surface resonator SAW the 1st pin connects one end of higher-order of oscillation coil L2, the collector electrode of another termination NPN transistor VT1 of higher-order of oscillation coil L2, the collector electrode of NPN transistor VT1 meets transmitting antenna ANT by electric capacity C2,
A termination circuit positive pole VCC of high-pass filtering coil L1 in described high-pass filtering circuit, sound surface resonator SAW the 1st pin connects the other end of high-pass filtering coil L1,12V DC power anode connection circuit positive pole VCC, 12V DC power cathode is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162076.4U CN204408324U (en) | 2015-03-20 | 2015-03-20 | 433MHz wireless launcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162076.4U CN204408324U (en) | 2015-03-20 | 2015-03-20 | 433MHz wireless launcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408324U true CN204408324U (en) | 2015-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520162076.4U Expired - Fee Related CN204408324U (en) | 2015-03-20 | 2015-03-20 | 433MHz wireless launcher |
Country Status (1)
| Country | Link |
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| CN (1) | CN204408324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682974A (en) * | 2015-03-20 | 2015-06-03 | 周玉林 | 433 MHz wireless transmitter |
-
2015
- 2015-03-20 CN CN201520162076.4U patent/CN204408324U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682974A (en) * | 2015-03-20 | 2015-06-03 | 周玉林 | 433 MHz wireless transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Jiamao Inventor before: Zhou Yulin |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160926 Address after: 410000, Hunan Changsha high tech Development Zone, Hunan, Tongzi slope West Road, 328 people printing Co., Ltd. research and exhibition floor, first floor Patentee after: Hunan nine days XinDa communications equipment Co., Ltd. Address before: 233000 Bengbu province high tech Zone in the East China Sea Road, No. 218, No. 5558 mailbox Patentee before: Zhou Yulin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20210320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |