CN107677310A - A kind of sensor based on WIFI signal transmission - Google Patents
A kind of sensor based on WIFI signal transmission Download PDFInfo
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- CN107677310A CN107677310A CN201710851641.1A CN201710851641A CN107677310A CN 107677310 A CN107677310 A CN 107677310A CN 201710851641 A CN201710851641 A CN 201710851641A CN 107677310 A CN107677310 A CN 107677310A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a kind of sensor based on WIFI signal transmission, it includes one-chip computer module, sensor detection module, UART signal and WIFI signal modular converter, power module, Voltage stabilizing module, signal level modular converter, device numbering setup module；The power interface of one-chip computer module is connected with power module；The GPIO interface of one-chip computer module is connected with device numbering setup module；The UART2 interfaces of one-chip computer module are connected with sensor detection module；The UART1 interfaces of one-chip computer module are connected with signal level modular converter；Signal level modular converter is connected with UART signal with WIFI signal modular converter；UART signal is also connected with WIFI signal modular converter with Voltage stabilizing module；Power module is connected with Voltage stabilizing module.Beneficial effects of the present invention：Wiring is simple, improves transmission range, reduces production cost, data security is good, and the data-signal that can detect sensor detection module is converted into WIFI signal and is transmitted, and sensor can also carry out wired power supply, battery powered.
Description
Technical field
The present invention relates to sensor and wireless communication technique field, particularly a kind of sensing based on WIFI signal transmission
Device.
Background technology
Current Temperature and Humidity sensor, water logging wireless senser, Smoke Sensor generally use wire communication mode, deposit
Difficult wiring, the troublesome maintenance the shortcomings of.Current this kind of sensor popularity rate still than relatively low because engineering reliability and into
This is not to control very well, and this kind of sensor also have transparent transmission caused by data safety sex chromosome mosaicism.
And its measurement data signals is switched into WIFI signal and is transmitted, it can be very good solve problem above.
The content of the invention
In view of the drawbacks described above of prior art, it is an object of the invention to provide a kind of biography based on WIFI signal transmission
Sensor, wiring is simple, improves transmission range, reduces production cost, data security is good, can be by sensor detection module
The data-signal detected is converted into WIFI signal and is transmitted, and sensor can also carry out wired power supply, battery powered.
The purpose of the present invention realized by such technical scheme, a kind of sensor based on WIFI signal transmission,
It includes：One-chip computer module, sensor detection module, UART signal and WIFI signal modular converter, power module, voltage stabilizing mould
Block, signal level modular converter, device numbering setup module；
The power interface K11 of the one-chip computer module is connected with the first output end K41 of the power module；The power supply
Second output end K42 of module is connected with the input K51 of the Voltage stabilizing module；
The UART2 interfaces K13 of the one-chip computer module is connected with the interface K21 of the sensor detection module；
The UART1 interfaces K14 of the one-chip computer module is connected with the input K61 of the signal level modular converter；
The output end K62 of the signal level modular converter and the UART signal and WIFI signal modular converter input
Hold K32 connections；
The UART signal and the power interface K31 of WIFI signal modular converter and the output end K52 of the Voltage stabilizing module
Connection；
The GPIO interface K12 of the one-chip computer module is connected with the output end K71 of the device numbering setup module.
Further, the sensor detection module includes：Temperature Humidity Sensor detection module, Smoke Sensor detection mould
Block, water sensor detection module.
Further, the signal level modular converter includes the first change-over circuit, the second change-over circuit, the 3rd conversion electricity
Road, the 4th change-over circuit；
The signaling interface of MOD_TXD and the UART signal and WIFI signal modular converter in first change-over circuit connect
Connect；MCU_RX in first change-over circuit is connected with the signaling interface of the one-chip computer module；
The signaling interface of MOD_RXD and the UART signal and WIFI signal modular converter in second change-over circuit connect
Connect；MCU_TX in second change-over circuit is connected with the signaling interface of the one-chip computer module；
The signaling interface of MOD_CFG and the UART signal and WIFI signal modular converter in 3rd change-over circuit connect
Connect；MCU_CFG in 3rd change-over circuit is connected with the signaling interface of the one-chip computer module；
The signaling interface of MOD_RST and the UART signal and WIFI signal modular converter in 4th change-over circuit connect
Connect；MCU_RST in 4th change-over circuit is connected with the signaling interface of the one-chip computer module.
Further, when the MOD_TXD interfaces in the first change-over circuit are high level, the first triode Q3 cut-offs, second
Triode Q1 base stage is high level, and the second triode Q1 cut-offs, now the MCU_RX interfaces in the first change-over circuit are that 5V is high
Level；
When the MOD_TXD interfaces in the first change-over circuit are low level, the first triode Q3 conductings, the second triode Q1
Base stage be low level, the second triode Q1 conductings, now the MCU_RX interfaces in the first change-over circuit are low level.
Further, when the MCU_TX interfaces in the second change-over circuit are high level, the 3rd triode Q4 cut-offs, the four or three
Pole pipe Q2 base stage is high level, and the 4th triode Q2 cut-offs, now the MOD_RXD interfaces in the second change-over circuit are that 3.3V is high
Level；
When the MCU_TX interfaces in the second change-over circuit are low level, the 3rd triode Q4 conductings, the 4th triode Q2
Base stage be low level, the 4th triode Q2 conductings, now the MOD_RXD interfaces in the second change-over circuit are low level.
Further, when the MCU_CFG interfaces in the 3rd change-over circuit are high level, the 5th triode Q7 cut-offs, the 6th
Triode Q5 base stage is high level, and the 6th triode Q5 cut-offs, now the MOD_CFG interfaces in the 3rd change-over circuit are 3.3V
High level；
When the MCU_CFG interfaces in the 3rd change-over circuit are low level, the 5th triode Q7 conductings, the 6th triode Q5
Base stage be low level, the 6th triode Q5 conductings, now the MOD_CFG interfaces in the 3rd change-over circuit are low level.
Further, when the MCU_RST interfaces in the 4th change-over circuit are high level, the 7th triode Q8 cut-offs, the 8th
Triode Q6 base stage is high level, and the 8th triode Q6 cut-offs, now the MOD_RST interfaces in the 4th change-over circuit are 3.3V
High level；
When the MCU_RST interfaces in the 4th change-over circuit are low level, the 7th triode Q8 conductings, the 8th triode Q6
Base stage be low level, the 8th triode Q6 conductings, now the MOD_RST interfaces in the 4th change-over circuit are low level.
Further, the power module is the power supply that size is 5V direct currents, and the Voltage stabilizing module includes TCP voltage stabilizings electricity
Source, the TCP voltage-stabilized power supplies size are 3.3V dc source.
Further, the power supply mode of the power module includes wired power supply, battery powered.
Further, the one-chip computer module is STM32 single-chip microcomputers；The one-chip computer module includes 8 GPIO interfaces
K12。
By adopting the above-described technical solution, the present invention has the advantage that：
(1) wiring of complexity is no longer needed；Transmission range is greatly improved；
(2) data-signal that can detect sensor detection module is converted into WIFI signal and is transmitted；
(3) modular design reduces production cost；
(4) encryption of data has ensured the safe and reliable of data.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can be wanted by following specification and right
Book is sought to realize and obtain.
Brief description of the drawings
The brief description of the drawings of the present invention is as follows：
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the signal level modular converter circuit connection diagram of the present invention.
Fig. 3 is the circuit connection diagram of the Temperature and Humidity module of the present invention.
Fig. 4 is the circuit connection diagram of the water logging detection module of the present invention.
Fig. 5 is the circuit connection diagram of the Smoke Detection module of the present invention.
In figure, 1 it is one-chip computer module, 2 is sensor detection module, 3 is UART signal and WIFI signal modular converter, 4
It is Voltage stabilizing module for power module, 5,6 be signal level modular converter, 7 is device numbering setup module.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2；A kind of sensor based on WIFI signal transmission, it includes：One-chip computer module 1, sensing
Device detection module 2, UART signal and WIFI signal modular converter 3, power module 4, Voltage stabilizing module 5, signal level modular converter
6th, device numbering setup module 7；The one-chip computer module 1 is STM32 single-chip microcomputers；The one-chip computer module 1 includes 8 GPIO
Interface K12.
The power interface K11 of the one-chip computer module 1 is connected with the first output end K41 of the power module 4；The electricity
Second output end K42 of source module 4 is connected with the input K51 of the Voltage stabilizing module 5；Externally fed is given by power module 4
One-chip computer module 1, sensor detection module 2, Voltage stabilizing module 5, signal level modular converter 6, device numbering setup module 7 supply
Electricity, power supply size are 5V dc sources.
Wherein, externally fed can use the mode of wired power supply, can also use battery powered mode.Externally fed
5V DC voltages be connected to the output interface of power module 4.The Voltage stabilizing module 5 includes TCP voltage-stabilized power supplies, the TCP
Voltage-stabilized power supply size is 3.3V dc source.TCP voltage of voltage regulation 3.3V is connected to the output interface of Voltage stabilizing module 5.
The UART2 interfaces K13 of the one-chip computer module 1 is connected with the interface K21 of the sensor detection module 2；
The UART1 interfaces K14 of the one-chip computer module 1 is connected with the input K61 of the signal level modular converter 6；
The output end K62 of the signal level modular converter 6 and the UART signal are defeated with WIFI signal modular converter 3
Enter to hold K32 to connect；
The UART signal and the power interface K31 of WIFI signal modular converter 3 and the output end of the Voltage stabilizing module 5
K52 connections；Power module 4 provides power supply to Voltage stabilizing module 5 and supplied after decompression to UART signal and WIFI signal modular converter 3
Electricity；Voltage swing after decompression is 3.3V dc sources.
The GPIO interface K12 of the one-chip computer module 1 is connected with the output end K71 of the device numbering setup module 7；It is logical
The device numbering set is crossed in device numbering setup module 7, the different switching dress in same network can be distinguished from the background
Put the signal of transmission.
Signal level modular converter is made up of components such as a series of resistance and triodes.The signal level modular converter
6 include the first change-over circuit, the second change-over circuit, the 3rd change-over circuit, the 4th change-over circuit；
The signaling interface of MOD_TXD and the UART signal and WIFI signal modular converter 3 in first change-over circuit connect
Connect；MCU_RX in first change-over circuit is connected with the signaling interface of the one-chip computer module 1；
The signaling interface of MOD_RXD and the UART signal and WIFI signal modular converter 3 in second change-over circuit connect
Connect；MCU_TX in second change-over circuit is connected with the signaling interface of the one-chip computer module 1；
The signaling interface of MOD_CFG and the UART signal and WIFI signal modular converter 3 in 3rd change-over circuit connect
Connect；MCU_CFG in 3rd change-over circuit is connected with the signaling interface of the one-chip computer module 1；
The signaling interface of MOD_RST and the UART signal and WIFI signal modular converter 3 in 4th change-over circuit connect
Connect；MCU_RST in 4th change-over circuit is connected with the signaling interface of the one-chip computer module 1.
The operation principle of signal level modular converter 6, when the MOD_TXD interfaces in the first change-over circuit are high level,
First triode Q3 ends, and the second triode Q1 base stage is high level, and the second triode Q1 ends, now the first change-over circuit
In MCU_RX interfaces be 5V high level；
When the MOD_TXD interfaces in the first change-over circuit are low level, the first triode Q3 conductings, the second triode Q1
Base stage be low level, the second triode Q1 conductings, now the MCU_RX interfaces in the first change-over circuit are low level.
When the MCU_TX interfaces in the second change-over circuit are high level, the 3rd triode Q4 cut-offs, the 4th triode Q2
Base stage be high level, the 4th triode Q2 cut-offs, now the MOD_RXD interfaces in the second change-over circuit are 3.3V high level；
When the MCU_TX interfaces in the second change-over circuit are low level, the 3rd triode Q4 conductings, the 4th triode Q2
Base stage be low level, the 4th triode Q2 conductings, now the MOD_RXD interfaces in the second change-over circuit are low level.
Similarly, when the MCU_CFG interfaces in the 3rd change-over circuit are high level, the 5th triode Q7 cut-offs, the six or three
Pole pipe Q5 base stage is high level, and the 6th triode Q5 cut-offs, now the MOD_CFG interfaces in the 3rd change-over circuit are that 3.3V is high
Level；
When the MCU_CFG interfaces in the 3rd change-over circuit are low level, the 5th triode Q7 conductings, the 6th triode Q5
Base stage be low level, the 6th triode Q5 conductings, now the MOD_CFG interfaces in the 3rd change-over circuit are low level.
Similarly, when the MCU_RST interfaces in the 4th change-over circuit are high level, the 7th triode Q8 cut-offs, the eight or three
Pole pipe Q6 base stage is high level, and the 8th triode Q6 cut-offs, now the MOD_RST interfaces in the 4th change-over circuit are that 3.3V is high
Level；
When the MCU_RST interfaces in the 4th change-over circuit are low level, the 7th triode Q8 conductings, the 8th triode Q6
Base stage be low level, the 8th triode Q6 conductings, now the MOD_RST interfaces in the 4th change-over circuit are low level.
Embodiment 1, as shown in figure 3, the sensor detection module is Temperature and Humidity module, by Temperature and Humidity module
The data-signal detected is converted to the transmitting procedure of WIFI wireless signals.
First, the data-signal detected is converted to UART signal and by one-chip computer module 1 by Temperature and Humidity module 2
UART2 interfaces be transferred to one-chip computer module 1 operation be encrypted.
Secondly, the UART signal after encryption is transferred to by one-chip computer module 1 by the UART1 interfaces K14 of one-chip computer module 1
Signal level modular converter 6 carries out level conversion operation.
Finally, the UART signal after level conversion is transferred to UART letters by signal level modular converter 6 by output end K62
Number with WIFI signal modular converter 3.UART signal and WIFI signal modular converter 3 are by the UART after encryption and level conversion
Signal is converted to WIFI signal, and is sent by way of TCP/IP data frames to background server.
The circuit connection of the Temperature and Humidity module 2 is as follows：Temperature and Humidity sensor U2 first interface is power supply
Positive pole, it is connected with 5V supply voltages；U2 second interface is communication data interface, the GPIO interface K 13 with one-chip computer module 1
The data detected are transferred to single-chip microcomputer by connection；U2 the 3rd interface is sky；U2 the 4th interface is power cathode, with ground
GND connections, are also connected with the inductance capacitance C2 that resistance is 0.1uF between first interface and the 4th interface, the Temperature and Humidity passes
Sensor U2 is DHT11 chips.
During work, one-chip computer module 1 is sent to Temperature and Humidity module 2 by U2 second interface by sequential and instructed,
Temperature and Humidity module 2 transmits the data of the Temperature and Humidity module measured to single-chip microcomputer by U2 second interface, completes whole detection
And transmitting procedure.
Embodiment 2, as shown in figure 4, the sensor detection module is water logging Wireless detection module, by water logging radio detection
The data-signal that module detects is converted to the transmitting procedure of WIFI wireless signals.
First, the data-signal detected is converted to UART signal and by single-chip microcomputer mould by water logging Wireless detection module 2
The UART2 interfaces of block 1 are transferred to one-chip computer module 1 and operation are encrypted.
Secondly, the UART signal after encryption is transferred to by one-chip computer module 1 by the UART1 interfaces K14 of one-chip computer module 1
Signal level modular converter 6 carries out level conversion operation.
Finally, the UART signal after level conversion is transferred to UART letters by signal level modular converter 6 by output end K62
Number with WIFI signal modular converter 3.UART signal and WIFI signal modular converter 3 are by the UART after encryption and level conversion
Signal is converted to WIFI signal, and is sent by way of TCP/IP data frames to background server.
The circuit connection of the water logging detection module is as follows：Water logging detection chip U1 includes 8 interfaces, and the first of U1 connects
Mouth ground connection GND；The first electric capacity C4 that U2 the 5th interface connection capacitance is 0.01uF, another termination of the first electric capacity C4
Ground；U1 the 3rd interface is signal output part, is connected with the GPIO interface K13 of single-chip microcomputer；U1 the 8th interface and the 4th interface
It is connected after connection and with supply voltage；U1 the 7th interface is connected with the first resistor R1 that resistance is 1K and is with resistance simultaneously
10K second resistance R4 connections, the first resistor R1 other end are connected with supply voltage, second resistance the R4 other end and electric capacity
It is worth the second electric capacity C5 connections for 0.1uF, the second electric capacity C5 other end ground connection；U1 the 6th interface is connected with second interface,
And it is connected simultaneously with second resistance R4 and the second electric capacity C5；The water logging detection chip U1 is NE555 chips.
By forming a non-steady-state oscillation circuit, no steady oscillation electricity by NE555 chips and above-mentioned resistance and electric capacity
The frequency on road is determined by first resistor R1, second resistance R4, the second electric capacity C5 and its inductance capacitance C4 of parallel connection.NE555 simultaneously
The GPIO interface of the delivery outlet access one-chip computer module 1 of chip.
Serial line interface P3 includes 4 interfaces, and P3 first interface is connected with the second electric capacity C5, P3 second interface and the
Two electric capacity C5 other end connection；P3 the 3rd interface connects the first wire, and P3 the 4th interface connects the second wire, and described the
One wire produces pulse signal when being contacted with the second wire with water.
During work, number of pulses that single-chip microcomputer receives in the statistical unit time.First when serial line interface P3 extractions leads
When line and the second wire are not exposed to water, the inductance capacitance C4 of the second electric capacity C5 and its parallel connection is a definite value, now unit
Number of pulses in time is certain.
When serial line interface P3 the first wires drawn and the second conductive contact are to water, its inductance capacitance C4 is caused to become
Change, have influence on the frequency of oscillation of oscillating circuit, and then cause the number of pulses in the unit interval to change, single-chip microcomputer detects
After this change, you can judgement has water logging phenomenon.
Embodiment 3, as shown in figure 5, the sensor detection module is Smoke Sensor detection module, by Smoke Sensor
The smoke signal that detection module detects is converted to the transmitting procedure of WIFI wireless signals.
First, the smoke signal detected is converted to UART signal and passes through single-chip microcomputer by Smoke Sensor detection module 2
The UART2 interfaces of module 1 are transferred to one-chip computer module 1 and operation are encrypted.
Secondly, the UART signal after encryption is transferred to by one-chip computer module 1 by the UART1 interfaces K14 of one-chip computer module 1
Signal level modular converter 6 carries out level conversion operation.
Finally, the UART signal after level conversion is transferred to UART letters by signal level modular converter 6 by output end K62
Number with WIFI signal modular converter 3.UART signal and WIFI signal modular converter 3 are by the UART after encryption and level conversion
Signal is converted to WIFI signal, and is sent by way of TCP/IP data frames to background server.
Smoke Detection module detection circuit connecting relation is as follows：Smoke Detection sensor U4 includes 4 interfaces, wherein U4
First interface be connected with positive source；U4 second interface is power cathode, is connected with the earth GND；First interface and second
The first electric capacity C3 that capacitance is 0.1uF is also associated between interface；3rd interface is communication data interface MQ-2OUT, with list
The GPIO interface K13 connections of piece machine module 1；4th interface is sky.The working condition of Smoke Detection sensor, Smoke Detection module
2 continuous firings, the smoke data signal detected is transmitted to single-chip microcomputer by U4 the 3rd interface, whole measurement is completed and passes
Defeated process.
The device have the advantages that：
(1) wiring of complexity is no longer needed；Transmission range is greatly improved；
(2) data-signal that can detect sensor detection module is converted into WIFI signal and is transmitted；
(3) modular design reduces production cost；
(4) encryption of data has ensured the safe and reliable of data.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Right among.
Claims (10)
1. a kind of sensor based on WIFI signal transmission, it is characterised in that it includes：One-chip computer module (1), sensor inspection
Survey module (2), UART signal and WIFI signal modular converter (3), power module (4), Voltage stabilizing module (5), signal level conversion
Module (6), device numbering setup module (7)；
The power interface K11 of the one-chip computer module (1) is connected with the first output end K41 of the power module (4)；The electricity
Second output end K42 of source module (4) is connected with the input K51 of the Voltage stabilizing module (5)；
The UART2 interfaces K13 of the one-chip computer module (1) is connected with the interface K21 of the sensor detection module (2)；
The UART1 interfaces K14 of the one-chip computer module (1) is connected with the input K61 of the signal level modular converter (6)；
The output end K62 of the signal level modular converter (6) and the UART signal are defeated with WIFI signal modular converter (3)
Enter to hold K32 to connect；
The UART signal and the power interface K31 of WIFI signal modular converter (3) and the output end of the Voltage stabilizing module (5)
K52 connections；
The GPIO interface K12 of the one-chip computer module (1) is connected with the output end K71 of the device numbering setup module (7).
2. the sensor as claimed in claim 1 based on WIFI signal transmission, it is characterised in that the sensor detection module
(2) include：Temperature Humidity Sensor detection module, Smoke Sensor detection module, water sensor detection module.
3. the sensor as claimed in claim 1 based on WIFI signal transmission, it is characterised in that the signal level modulus of conversion
Block (6) includes the first change-over circuit, the second change-over circuit, the 3rd change-over circuit, the 4th change-over circuit；
MOD_TXD in first change-over circuit is connected with the UART signal with the signaling interface of WIFI signal modular converter (3)；
MCU_RX in first change-over circuit is connected with the signaling interface of the one-chip computer module (1)；
MOD_RXD in second change-over circuit is connected with the UART signal with the signaling interface of WIFI signal modular converter (3)；
MCU_TX in second change-over circuit is connected with the signaling interface of the one-chip computer module (1)；
MOD_CFG in 3rd change-over circuit is connected with the UART signal with the signaling interface of WIFI signal modular converter (3)；
MCU_CFG in 3rd change-over circuit is connected with the signaling interface of the one-chip computer module (1)；
MOD_RST in 4th change-over circuit is connected with the UART signal with the signaling interface of WIFI signal modular converter (3)；
MCU_RST in 4th change-over circuit is connected with the signaling interface of the one-chip computer module (1).
4. the sensor as claimed in claim 3 based on WIFI signal transmission, it is characterised in that when in the first change-over circuit
When MOD_TXD interfaces are high level, the first triode Q3 cut-offs, the second triode Q1 base stage is high level, the second triode
Q1 ends, and now the MCU_RX interfaces in the first change-over circuit are 5V high level；
When the MOD_TXD interfaces in the first change-over circuit are low level, the first triode Q3 conductings, the second triode Q1 base
Extremely low level, the second triode Q1 conductings, now the MCU_RX interfaces in the first change-over circuit are low level.
5. the sensor as claimed in claim 3 based on WIFI signal transmission, it is characterised in that when in the second change-over circuit
When MCU_TX interfaces are high level, the 3rd triode Q4 cut-offs, the 4th triode Q2 base stage is high level, the 4th triode Q2
Cut-off, now the MOD_RXD interfaces in the second change-over circuit are 3.3V high level；
When the MCU_TX interfaces in the second change-over circuit are low level, the 3rd triode Q4 conductings, the 4th triode Q2 base
Extremely low level, the 4th triode Q2 conductings, now the MOD_RXD interfaces in the second change-over circuit are low level.
6. the sensor as claimed in claim 3 based on WIFI signal transmission, it is characterised in that when in the 3rd change-over circuit
When MCU_CFG interfaces are high level, the 5th triode Q7 cut-offs, the 6th triode Q5 base stage is high level, the 6th triode
Q5 ends, and now the MOD_CFG interfaces in the 3rd change-over circuit are 3.3V high level；
When the MCU_CFG interfaces in the 3rd change-over circuit are low level, the 5th triode Q7 conductings, the 6th triode Q5 base
Extremely low level, the 6th triode Q5 conductings, now the MOD_CFG interfaces in the 3rd change-over circuit are low level.
7. the sensor as claimed in claim 3 based on WIFI signal transmission, it is characterised in that when in the 4th change-over circuit
When MCU_RST interfaces are high level, the 7th triode Q8 cut-offs, the 8th triode Q6 base stage is high level, the 8th triode
Q6 ends, and now the MOD_RST interfaces in the 4th change-over circuit are 3.3V high level；
When the MCU_RST interfaces in the 4th change-over circuit are low level, the 7th triode Q8 conductings, the 8th triode Q6 base
Extremely low level, the 8th triode Q6 conductings, now the MOD_RST interfaces in the 4th change-over circuit are low level.
8. the sensor as claimed in claim 1 based on WIFI signal transmission, it is characterised in that the power module (4) is
Size is the power supply of 5V direct currents, and the Voltage stabilizing module (5) includes TCP voltage-stabilized power supplies, and the TCP voltage-stabilized power supplies size is 3.3V
Dc source.
9. the sensor as claimed in claim 8 based on WIFI signal transmission, it is characterised in that the power module (4)
Power supply mode includes wired power supply, battery powered.
10. the sensor as claimed in claim 1 based on WIFI signal transmission, it is characterised in that the one-chip computer module (1)
For STM32 single-chip microcomputers；The one-chip computer module (1) includes 8 GPIO interface K12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851641.1A CN107677310A (en) | 2017-09-19 | 2017-09-19 | A kind of sensor based on WIFI signal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851641.1A CN107677310A (en) | 2017-09-19 | 2017-09-19 | A kind of sensor based on WIFI signal transmission |
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| Publication Number | Publication Date |
|---|---|
| CN107677310A true CN107677310A (en) | 2018-02-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710851641.1A Pending CN107677310A (en) | 2017-09-19 | 2017-09-19 | A kind of sensor based on WIFI signal transmission |
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Application publication date: 20180209 |