CN108847864A - Wireless transmitter with microcontroller - Google Patents
Wireless transmitter with microcontroller Download PDFInfo
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- CN108847864A CN108847864A CN201810755917.0A CN201810755917A CN108847864A CN 108847864 A CN108847864 A CN 108847864A CN 201810755917 A CN201810755917 A CN 201810755917A CN 108847864 A CN108847864 A CN 108847864A
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- microcontroller
- electrically connected
- wireless transmitter
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The present invention discloses a kind of wireless transmitter with microcontroller, including microcontroller, wireless transceiver, wireless change-over switch, antenna and circuit board, and the microcontroller and the wireless transceiver are respectively arranged on the circuit board；The microcontroller is electrically connected with the first end of the wireless transceiver, and the second end of the wireless transceiver is electrically connected with the wireless change-over switch, and the antenna is electrically connected with the wireless change-over switch.The present invention is a kind of wireless transmitter with microcontroller, by the way that the route of microcontroller and wireless transceiver is come on same printed wiring board, the data line of two products is on same printed wiring board, directly it is connected by track, improve the safety and reliability of device, avoid the occurrence of the poor contact of data connection head, the problem of connecting line is longer, shield effectiveness is poor and poor welding quality, the validity of improve data transfer, it improves the anti-interference ability of device, improve receiving sensitivity, it is user-friendly.
Description
Technical field
The present invention relates to wireless device fields, more particularly to a kind of wireless transmitter with microcontroller.
Background technique
LoRa is a kind of novel LPWAN communication technology based on spread spectrum, and low capacity data can be passed through big model by it
The radio-frequency spectrum enclosed transfers out, and can be realized the receiving sensitivity of superelevation.By using efficient spreading factor, for needing
It to share and be applicable in very much for the intelligent terminal of small amount of data for a long time.Related data shows that LoRa terminal only leans on battery can
The time of net is maintained for 10 years.This low-power consumption wide area technology exactly develops required for Internet of Things.With LoRa skill
Art persistent fever in the field of business, in addition its unique superior transmission performance, is quickly increasing with the group of LoRa technology,
The every aspect of the Internet of Things such as smart city, sensor network, industrial automation, intelligent electric meter, intelligent temperature control is penetrated into.
Preferable application prospect, so that emerging in large numbers as relevant end product is in the ascendant, brings unprecedented to LoRa technology
Opportunities and challenges.
However, in existing LoRa device, microcontroller products and LoRa transceiver product are passed through into data line phase
Connection, still, if the outside of two products by data connection head and conducting wire connection or be welded to connect, probably due to
The poor contact of data connection head, the reason of connecting line is longer, shield effectiveness is poor and poor welding quality, cause the transmission of data not
The problem of weak, the receiving sensitivity variation of good or anti-interference ability etc., very inconvenient use；Meanwhile existing LoRa device needs
Two pieces of printed boards (i.e. microcontroller products and LoRa transceiver product respectively have one piece of printed board) is connected, print is greatly improved
The material cost of making sheet；And when in use, two pieces of printed boards account for more usable floor areas and the greater room position of plate,
It is unfavorable for the design of later product, so that becoming complexity to the design in product later period.
Summary of the invention
The purpose of the present invention is overcoming shortcoming in the prior art, a kind of wireless receiving and dispatching dress with microcontroller is provided
It sets, the route of microcontroller and wireless transceiver is come on same printed wiring board, the data line of two products is same
On block printed wiring board, directly it is connected by track, improves the safety and reliability of device, avoids the occurrence of data company
The problem of junction contacts are bad, connecting line is longer, shield effectiveness is poor and poor welding quality, the validity of improve data transfer,
It improves the anti-interference ability of device, improve receiving sensitivity, it is user-friendly.
The purpose of the present invention is achieved through the following technical solutions：
A kind of wireless transmitter with microcontroller, including：Microcontroller, wireless transceiver, wireless change-over switch, day
Line and circuit board, the microcontroller and the wireless transceiver are respectively arranged on the circuit board；
The microcontroller is electrically connected with the first end of the wireless transceiver, the second end of the wireless transceiver and institute
Wireless change-over switch electrical connection is stated, the antenna is electrically connected with the wireless change-over switch.
The wireless transceiver includes wireless transmit/receive units and the first crystal oscillator unit in one of the embodiments, described
Wireless transmit/receive units and first crystal oscillator unit electrical connection.
First crystal oscillator unit includes first capacitor C17, the second capacitor C18, third electricity in one of the embodiments,
Hold C19, the 4th capacitor C20 and the first crystal resonator X1, the first end of the first crystal resonator X1 respectively with the second capacitor C18
First end and the wireless transmit/receive units electrical connection, the second end of the first crystal resonator X1 respectively with the third capacitor
The first end of C19 and wireless transmit/receive units electrical connection, the second end of the second capacitor C18 and the first capacitor C17
One end connection, and the other end of the first capacitor C17 is electrically connected with the wireless transmit/receive units, the third capacitor C19
Second end connect with one end of the 4th capacitor C20, and the other end of the 4th capacitor C20 and the wireless receiving and dispatching list
Member electrical connection.
The wireless transmit/receive units are Lora Transmit-Receive Unit in one of the embodiments,.
The microcontroller includes MCU unit and the second crystal oscillator unit, the MCU unit in one of the embodiments,
It is electrically connected with second crystal oscillator unit.
Second crystal oscillator unit includes the 5th capacitor C24, the 6th capacitor C26 and second in one of the embodiments,
Crystal resonator X2, the first end of the second crystal resonator X1 are electric with the first end of the 5th capacitor C24 and the MCU unit respectively
Connection, the 5th capacitor C24 the other end ground connection, the second end of the second crystal resonator X1 respectively with the 6th capacitor
The first end of C26 and MCU unit electrical connection, the other end ground connection of the 6th capacitor C26.
In one of the embodiments, further include battery, the battery respectively with the microcontroller and the wireless receipts
Send out device electrical connection.
The wireless change-over switch includes dc-dc converter and the first filter unit in one of the embodiments, described
One end of dc-dc converter is electrically connected with the wireless transceiver, and the other end of the dc-dc converter and first filtering are single
The first end electrical connection of member, the second end of first filter unit are electrically connected with the antenna.
First filter unit includes first resistor R2 and the 7th capacitor C2 in one of the embodiments, and described
The first end of one resistance R2 is electrically connected with one end of one end of the 7th capacitor C2 and the dc-dc converter respectively, and described
The second end of one resistance R2 is grounded, the other end ground connection of the 7th capacitor C2.
The wireless change-over switch further includes the 8th capacitor C1 in one of the embodiments, the 8th capacitor C1's
One end is electrically connected with the dc-dc converter, and the other end of the 8th capacitor C1 is electrically connected with the antenna.
The present invention compared with the prior art the advantages of and have the beneficial effect that：
The present invention is a kind of wireless transmitter with microcontroller, by by the route of microcontroller and wireless transceiver
It comes on same printed wiring board, the data line of two products directly passes through track phase on same printed wiring board
Connection, improves the safety and reliability of device, avoids the occurrence of that the poor contact of data connection head, connecting line be longer, shielding effect
The problem of fruit difference and poor welding quality, the validity of improve data transfer improve the anti-interference ability of device, improve reception spirit
Sensitivity, it is user-friendly；Meanwhile after being arranged to one piece of printed wiring board, the cost of printed board plate is significantly reduced, makes to produce
The cost performance of product greatly improves.And the area for accounting for plate when in use, is reduced, more convenient design and bigger is provided
Application space allows the design of complete machine to become to be more easier simply.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the functional block diagram of the wireless transmitter with microcontroller of an embodiment of the present invention；
Fig. 2 is the circuit diagram of the wireless transmitter with microcontroller of an embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Referring to Fig. 1, a kind of wireless transmitter 10 with microcontroller, including：Microcontroller 100, wireless transceiver
200, wireless change-over switch 300, antenna 400 and circuit board 500, the microcontroller 100 and the wireless transceiver 200 are distinguished
It is set on the circuit board 500；Wireless transmitter 10 further includes battery 600, the battery 600 respectively with the microcontroller
Device 100 and the wireless transceiver 200 are electrically connected.It should be noted that the microcontroller 100 is various for connecting
On intellectual product, to realize different function and purposes；The wireless transceiver 200 is for receiving or sending wireless signal；
The wireless change-over switch 300 is used to convert the wireless transmission of wireless transmitter or the state of wireless receiving；The antenna
400 for receiving or emitting signal；The circuit board 500 is for integrating microcontroller 100 and wireless transceiver 200；
The battery 600 is used to provide necessary power supply for wireless transmitter；By microcontroller 100 and wireless transceiver 200
Route come on same printed wiring board, the cost of printed board plate can be significantly reduced, keep the cost performance of product big
Width improves.And the area for accounting for plate when in use, is reduced, more convenient design and bigger application space is provided, allows
The design of complete machine becomes to be more easier simple.
Referring to Fig. 1, the microcontroller 100 is electrically connected with the first end of the wireless transceiver 200, the wireless receipts
The second end of hair device 200 is electrically connected with the wireless change-over switch 300, the antenna 400 and wireless 300 electricity of change-over switch
Connection.In this way, by coming the route of microcontroller and wireless transceiver on same printed wiring board, the number of two products
According to line on same printed wiring board, directly it is connected by track, improves the safety and reliability of device, avoid
There is the problem of data connection head poor contact, connecting line is longer, shield effectiveness is poor and poor welding quality, improve data transfer
Validity, improve device anti-interference ability, improve receiving sensitivity, it is user-friendly.
In order to improve the accuracy of positioning, and then improves the anti-interference ability of wireless transmitter, improves receiving sensitivity,
It is user-friendly；In one embodiment, for example, the wireless transmitter further includes ultrasonic sensor 700, the ultrasound
Wave sensor 700 is electrically connected with the microcontroller 100, and the ultrasonic sensor 700 is set on the circuit board.Such as
Ultrasonic signal can be converted into electric signal, ultrasonic wave encounters impurity or interface meeting by the way that ultrasonic sensor is arranged by this
It generating significantly to reflect to form and is reflected into echo, Doppler effect can be generated by encountering mobiles, when installing wireless transmitter,
The accuracy of wireless transmitter positioning can be improved, and then improve the anti-interference ability of wireless transmitter, improve reception spirit
Sensitivity, it is user-friendly.The ultrasonic sensor uses the biography of the model HY-1640ABS of Heng Sheng Electronics Co., Ltd.
Sensor.
It should be noted that referring to Fig. 2, the wireless transceiver 200 includes wireless transmit/receive units and the first crystal oscillator list
Member, the wireless transmit/receive units U2 and first crystal oscillator unit electrical connection.Specifically, first crystal oscillator unit includes first
Capacitor C17, the second capacitor C18, third capacitor C19, the 4th capacitor C20 and the first crystal resonator X1, the first crystal resonator X1's
First end is electrically connected with the first end of the second capacitor C18 and the wireless transmit/receive units respectively, the first crystal resonator X1
Second end be electrically connected respectively with the first end of the third capacitor C19 and the wireless transmit/receive units, the second capacitor C18
Second end connect with one end of the first capacitor C17, and the other end of the first capacitor C17 and the wireless receiving and dispatching list
Member electrical connection, the second end of the third capacitor C19 is connect with one end of the 4th capacitor C20, and the 4th capacitor C20
The other end be electrically connected with the wireless transmit/receive units.In the present embodiment, the wireless transmit/receive units are Lora Transmit-Receive Unit.
In this way, can produce highly stable oscillation by the first crystal oscillator unit of setting, playing filter action to wireless transceiver.It needs
It is noted that Lora transceiver of the wireless transmit/receive units U2 using the model Sx1276 of semtech company.
It should be noted that referring to Fig. 2, the microcontroller includes MCU unit and the second crystal oscillator unit, the MCU
Unit U3 is electrically connected with second crystal oscillator unit.Specifically, second crystal oscillator unit includes the 5th capacitor C24, the 6th electricity
Hold C26 and the second crystal resonator X2, the first end of the second crystal resonator X1 respectively with the first end of the 5th capacitor C24 and institute
State MCU unit electrical connection, the 5th capacitor C24 the other end ground connection, the second end of the second crystal resonator X1 respectively with institute
State the first end and MCU unit electrical connection of the 6th capacitor C26, the other end ground connection of the 6th capacitor C26.In this way, logical
The second crystal oscillator unit of setting is crossed, highly stable oscillation is can produce, filter action is played to microcontroller.The MCU unit
U3 uses the chip of the model STM32 of STMicroelectronics company.
It should be noted that referring to Fig. 2, the wireless change-over switch 300 includes the filtering of dc-dc converter U1 and first
Unit, one end of the dc-dc converter are electrically connected with the wireless transceiver, the other end of the dc-dc converter with it is described
The first end of first filter unit is electrically connected, and the second end of first filter unit is electrically connected with the antenna.Specifically, institute
Stating the first filter unit includes first resistor R2 and the 7th capacitor C2, and the first end of the first resistor R2 is respectively with the described 7th
One end of capacitor C2 and the electrical connection of one end of the dc-dc converter, the second end ground connection of the first resistor R2, the described 7th
The other end of capacitor C2 is grounded.In this way, by setting dc-dc converter, can control wireless transmitter wireless reception or
Person's transmitting.
In Fig. 2, the dc-dc converter U1 includes 6 pins, wherein 1 foot is TX pin, 2 feet are GND pin, 3 feet
For RX pin, 4 feet are SW pin, and 5 feet are RFIN pin and 6 feet are VDD pin, 1 foot of the dc-dc converter U1 with it is described
The RF0 pin of wireless transmit/receive units U2 is electrically connected, the 2 feet ground connection of the dc-dc converter U1,3 feet of the dc-dc converter U1
It is electrically connected with the RF1 pin of the wireless transmit/receive units U2,4 feet of the dc-dc converter U1 and the wireless transmit/receive units U2
The electrical connection of SW pin, 5 feet of the dc-dc converter U1 are electrically connected with the antenna, 6 feet of the dc-dc converter U1 and
The first filter unit electrical connection.The dc-dc converter U1 uses the model RTC7608's of Rui Zhi Science and Technology Ltd.
Switch conversion chip.
Referring to Fig. 2, the wireless change-over switch further includes the 8th capacitor C1, one end of the 8th capacitor C1 with it is described
Dc-dc converter electrical connection, the other end of the 8th capacitor C1 are electrically connected with the antenna.Antenna is believed in this way, can be improved
Number filter effect, that is, improve to transmitting signal or receive signal filter effect.
When work：The SW pin of wireless transmit/receive units U2 to dc-dc converter U1 5 foot high level or low level, when wireless
When Transmit-Receive Unit exports low level, the 3 foot RX of the dc-dc converter U1 are in reception state, so as to realize wireless receiving and dispatching
Reception of the device to aerial signal；When wireless transmit/receive units export high level, the 1 foot TX of the dc-dc converter U1 is in hair
State is penetrated, so as to realize wireless transmitter transmitting antenna signal.Also, controlling signal can be by external software Lai defeated
Enter to give wireless transmit/receive units U2, and then exports low and high level from the SW pin of wireless transmit/receive units U2.
It is appreciated that when wireless transmitter realizes that signal is sent, in order to improve the stability of aerial signal, filter
It except the unstable ripple occurred in signal, and then improves the anti-interference ability of wireless transmitter, improve receiving sensitivity, mention
The validity of high data transmission, it is user-friendly；In one embodiment, for example, referring to Fig. 2, the wireless transmitter
It further include the second filter unit, the transmitting terminal (TX pin) of the first end of second filter unit and the wireless change-over switch
Electrical connection, the second end of second filter unit are electrically connected with one end (RF0) of the wireless transceiver；Second filtering
Unit includes the 9th capacitor C9, the tenth capacitor C10, the 11st capacitor C11, third inductance LV3 and the 4th inductance LV4, and described the
The first end of three inductance LV3 is electrically connected with one end of the wireless transceiver, the second end of the third inductance LV3 and described the
Four inductance LV4 series connection, the other end of the 4th inductance LV4 also respectively with the wireless change-over switch and the 11st capacitor
One end of C11 is electrically connected, the other end ground connection of the 11st capacitor C11, the both ends of the tenth capacitor C10 respectively with it is described
The both ends of 4th inductance LV4 are connected in parallel, and one end of the 9th capacitor C9 and the second end of the third inductance LV3 are electrically connected
It connects, the other end ground connection of the 9th capacitor C9.In this way, second filter unit is used to filter out wireless transmitter transmission
The filtering of signal, to improve the stability of aerial signal, filters out the unstable wave occurred in signal so that signal is more stable
Line, and then improve the anti-interference ability of wireless transmitter, improve receiving sensitivity, the validity of improve data transfer is convenient
User uses.By the way that third inductance LV3 and the 4th inductance LV4 is arranged, the effect of filtering can be effectively realized.
It should also be noted that, when wireless transmitter realizes that signal receives, in order to improve the steady of aerial signal
It is qualitative, the unstable ripple occurred in signal is filtered out, and then improve the anti-interference ability of wireless transmitter, improve reception spirit
Sensitivity, the validity of improve data transfer are user-friendly；In one embodiment, for example, referring to Fig. 2, the wireless receipts
Transmitting apparatus further includes third filter unit, the receiving end of the first end of the third filter unit and the wireless change-over switch
(RX pin) electrical connection, the second end of the third filter unit are electrically connected with one end (RF1) of the wireless transceiver；It is described
Third filter unit includes capacitor C5, the first inductance LV1 and the second inductance LV2, the first end of the first inductance LV1 with it is described
One end of wireless transceiver is electrically connected, the second end of the first inductance LV1 respectively with one end of the second inductance LV2 and institute
State one end electrical connection of capacitor C5, the other end of the second inductance LV2 and receiving end (the RX pipe of the wireless change-over switch
Foot) electrical connection, the other end ground connection of the capacitor C5；Also, the capacitor C5, the first inductance LV1 and second electricity
Feel the filter unit of LV2 structure " T " font；In this way, can be when wireless transmitter realizes that signal receives, in order to improve day
The stability of line signal, filters out the unstable ripple occurred in signal, so improve wireless transmitter anti-interference ability,
Receiving sensitivity is improved, the validity of improve data transfer is user-friendly.
Further, in order to filter out the unstable signal interference of wireless transceiver medium-high frequency or filter out wireless receipts
The unstable signal interference for sending out the low frequency in device filters out the unstable ripple occurred in signal, and then improves wireless receiving and dispatching
The anti-interference ability of device improves receiving sensitivity, and the validity of improve data transfer is user-friendly；One embodiment
In, for example, referring to Fig. 2, the wireless transceiver further includes double capacitor cells, double capacitor cells and the wireless receiving and dispatching
Unit U2 electrical connection, double capacitor cells include capacitor C12, capacitor C13 and the 5th inductance LV5, the capacitor C12 and described
Capacitor C13 is connected in parallel, and the capacitor C12 and the first end of the capacitor C13 parallel connection respectively with the wireless transmit/receive units
The electrical connection of one end of a pin of U2 and the 5th inductance LV5, the other end of the capacitor C12 and the capacitor C13 parallel connection
Ground connection, the other end ground connection of the 5th inductance LV5；It should be noted that the capacitor C12 and the capacitor C13 mono- are
Bulky capacitor, another is small capacitances, so as to filter out the unstable signal interference or filter of wireless transceiver medium-high frequency
The unstable signal interference for removing the low frequency in wireless transceiver filters out the unstable ripple occurred in signal, Jin Erti
The anti-interference ability of high wireless transmitter improves receiving sensitivity, and the validity of improve data transfer is user-friendly.
The present invention compared with the prior art the advantages of and have the beneficial effect that：
The present invention is a kind of wireless transmitter with microcontroller, by by the route of microcontroller and wireless transceiver
It comes on same printed wiring board, the data line of two products directly passes through track phase on same printed wiring board
Connection, improves the safety and reliability of device, avoids the occurrence of that the poor contact of data connection head, connecting line be longer, shielding effect
The problem of fruit difference and poor welding quality, the validity of improve data transfer improve the anti-interference ability of device, improve reception spirit
Sensitivity, it is user-friendly；Meanwhile after being arranged to one piece of printed wiring board, the cost of printed board plate is significantly reduced, makes to produce
The cost performance of product greatly improves.And the area for accounting for plate when in use, is reduced, more convenient design and bigger is provided
Application space allows the design of complete machine to become to be more easier simply.
It should be noted that the characteristics such as the leading long range of LoRa wireless technology, high-penetration, anti-interference, low-power consumption, it is sufficient to fill out
Many characteristic defectives of other wireless products are mended, development potentiality is by good.The design concept of the present embodiment is to can reduce use
The research and development and use cost at family, it is more convenient to use, and quickly import, keep Internet of Things relevant using expanded scope, adds
Speed is universal.The product LM02 of a LoRa+MCU Integration Design produces the radio frequency of LoRa Transmit-Receive Unit (i.e. LoRa transceiver)
Product L01S1003S and microcontroller products STM32 are combined, and two pieces of wiring boards merging are miniature to one piece, and only
16mm x 16mm size, can substantially reduce and account for plate suqare, so that the cost performance of product greatly improves.By practical application, LM02
Product index is superior, performance is relatively reliable.The present embodiment provides the designs and application space bigger to user, especially for mesh
For preceding most popular wearable terminal installation in the market, vehicle-carried mobile positioning device, the product of LoRa+MCU Integration Design
LM02 is more for development prospect.The present embodiment designs a kind of product LM02 high with small in size, degree of integration.In addition to can help to
End product it is lightening outer, high degree of integration characteristic can also significantly simplify the design of plank, greatly improve cost performance.Have simultaneously
Help reduce the importing and research and development cost of user.Meanwhile the index of product is superior, performance is relatively reliable.In conjunction with various aspects advantage,
The present embodiment by be widely used in include wearable device, child and the tracing and positioning of pet, equipment and commodity tracking and managing,
Silver-haired people look after be served by, the detection application at home such as monitoring, environmental pollution early warning monitoring, the wisdom ammeter of earth flow and water level
Deng.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be construed as a limitation to the scope of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of wireless transmitter with microcontroller, which is characterized in that including：Microcontroller, wireless transceiver, wireless turn
Switch, antenna and circuit board are changed, the microcontroller and the wireless transceiver are respectively arranged on the circuit board；
The microcontroller is electrically connected with the first end of the wireless transceiver, the second end of the wireless transceiver and the nothing
The electrical connection of line change-over switch, the antenna are electrically connected with the wireless change-over switch.
2. the wireless transmitter according to claim 1 with microcontroller, which is characterized in that the wireless transceiver packet
Include wireless transmit/receive units and the first crystal oscillator unit, the wireless transmit/receive units and first crystal oscillator unit electrical connection.
3. the wireless transmitter according to claim 2 with microcontroller, which is characterized in that first crystal oscillator unit
Including first capacitor C17, the second capacitor C18, third capacitor C19, the 4th capacitor C20 and the first crystal resonator X1, described first is brilliant
The first end of vibration device X1 is electrically connected with the first end of the second capacitor C18 and the wireless transmit/receive units respectively, and described first
The second end of crystal resonator X1 is electrically connected with the first end of the third capacitor C19 and the wireless transmit/receive units respectively, and described
The second end of two capacitor C18 is connect with one end of the first capacitor C17, and the other end of the first capacitor C17 with it is described
Wireless transmit/receive units electrical connection, the second end of the third capacitor C19 are connect with one end of the 4th capacitor C20, and described
The other end of 4th capacitor C20 is electrically connected with the wireless transmit/receive units.
4. the wireless transmitter according to claim 2 with microcontroller, which is characterized in that the wireless transmit/receive units
For Lora Transmit-Receive Unit.
5. the wireless transmitter according to claim 1 with microcontroller, which is characterized in that the microcontroller includes
MCU unit and the second crystal oscillator unit, the MCU unit are electrically connected with second crystal oscillator unit.
6. the wireless transmitter according to claim 5 with microcontroller, which is characterized in that second crystal oscillator unit
Including the 5th capacitor C24, the 6th capacitor C26 and the second crystal resonator X2, the first end of the second crystal resonator X1 respectively with it is described
The first end of 5th capacitor C24 and MCU unit electrical connection, the other end ground connection of the 5th capacitor C24, described second is brilliant
The second end of vibration device X1 is electrically connected with the first end of the 6th capacitor C26 and the MCU unit respectively, the 6th capacitor
The other end of C26 is grounded.
7. the wireless transmitter according to claim 1 with microcontroller, which is characterized in that it further include battery, it is described
Battery is electrically connected with the microcontroller and the wireless transceiver respectively.
8. the wireless transmitter according to claim 1 with microcontroller, which is characterized in that the wireless change-over switch
Including dc-dc converter and the first filter unit, one end of the dc-dc converter is electrically connected with the wireless transceiver, described
The other end of dc-dc converter is electrically connected with the first end of first filter unit, the second end of first filter unit with
The antenna electrical connection.
9. the wireless transmitter according to claim 8 with microcontroller, which is characterized in that first filter unit
Including first resistor R2 and the 7th capacitor C2, the first end of the first resistor R2 respectively with one end of the 7th capacitor C2 and
One end of the dc-dc converter is electrically connected, the second end ground connection of the first resistor R2, the other end of the 7th capacitor C2
Ground connection.
10. the wireless transmitter according to claim 8 with microcontroller, which is characterized in that the wireless conversion is opened
Pass further includes the 8th capacitor C1, and one end of the 8th capacitor C1 is electrically connected with the dc-dc converter, the 8th capacitor C1
The other end be electrically connected with the antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810755917.0A CN108847864A (en) | 2018-07-11 | 2018-07-11 | Wireless transmitter with microcontroller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810755917.0A CN108847864A (en) | 2018-07-11 | 2018-07-11 | Wireless transmitter with microcontroller |
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| CN108847864A true CN108847864A (en) | 2018-11-20 |
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| CN201810755917.0A Pending CN108847864A (en) | 2018-07-11 | 2018-07-11 | Wireless transmitter with microcontroller |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206164860U (en) * | 2016-10-02 | 2017-05-10 | 上海和擎信息科技有限公司 | Wireless ultrasonic wave changer |
| CN106846756A (en) * | 2017-03-28 | 2017-06-13 | 冷明 | A kind of door state monitoring and warning device based on LoRa Internet of Things transmission technologys |
| CN206302432U (en) * | 2017-01-04 | 2017-07-04 | 路跃 | A kind of cloud control system |
| CN206332860U (en) * | 2017-01-04 | 2017-07-14 | 路晓明 | LoRa gateways |
| CN206470930U (en) * | 2016-12-23 | 2017-09-05 | 江西飞尚科技有限公司 | A kind of radio communication magnetic bullet instrument acquisition module based on storage battery power supply |
| CN206865608U (en) * | 2017-05-26 | 2018-01-09 | 黄深喜 | The long-distance wireless remote control circuit of the camera lens panorama camera of integral type six |
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2018
- 2018-07-11 CN CN201810755917.0A patent/CN108847864A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206164860U (en) * | 2016-10-02 | 2017-05-10 | 上海和擎信息科技有限公司 | Wireless ultrasonic wave changer |
| CN206470930U (en) * | 2016-12-23 | 2017-09-05 | 江西飞尚科技有限公司 | A kind of radio communication magnetic bullet instrument acquisition module based on storage battery power supply |
| CN206302432U (en) * | 2017-01-04 | 2017-07-04 | 路跃 | A kind of cloud control system |
| CN206332860U (en) * | 2017-01-04 | 2017-07-14 | 路晓明 | LoRa gateways |
| CN106846756A (en) * | 2017-03-28 | 2017-06-13 | 冷明 | A kind of door state monitoring and warning device based on LoRa Internet of Things transmission technologys |
| CN206865608U (en) * | 2017-05-26 | 2018-01-09 | 黄深喜 | The long-distance wireless remote control circuit of the camera lens panorama camera of integral type six |
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Application publication date: 20181120 |