CN208589134U - A kind of wireless transmission detecting device - Google Patents
A kind of wireless transmission detecting device Download PDFInfo
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- CN208589134U CN208589134U CN201821167853.4U CN201821167853U CN208589134U CN 208589134 U CN208589134 U CN 208589134U CN 201821167853 U CN201821167853 U CN 201821167853U CN 208589134 U CN208589134 U CN 208589134U
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
A kind of wireless transmission detecting device of the utility model, including amplitude modulation circuit, fixed amplitude circuit, voltage-frequency conversion circuit, the amplitude modulation circuit connection fixed amplitude circuit, fixed amplitude circuit connect voltage-frequency conversion circuit；The problem of in effective solution signals transmission by Electromagnetic Interference, improve the precision of signal detection.The utility model is skillfully constructed, structure is simple, the physiologic information of detection module detection, it is filtered through T-type, enter the inverting input terminal of operational amplifier AR2 after ratio enlargement, accurate real-time physiological information is exported with the error correction voltage superposition inputted simultaneously, after small fluctuation is eliminated through hysteresis comparator after enter the voltage frequency conversioning circuit that NE555 chip U1 is core and be converted to digital square-wave and be transmitted to processing unit, it is transmitted again by processing unit by wireless transport module, the problem of avoiding in signals transmission by Electromagnetic Interference, improve the precision of signal detection.
Description
Technical field
The utility model relates to radio transmission technical field, especially a kind of wireless transmission detecting device.
Background technique
Prior art discloses application No. is 201120298232.1 wireless transmission detecting devices, pass through setting power supply
Control assembly controls the starting or closing of wireless transport module, has prevented Electromagnetic Interference physiological detection and power consumption, has reached
The long-term effect that promotion physiological detection accuracy and instrument use.
However the prior art, when frequency of use is relatively high, power-supply control unit can control the frequency of wireless transport module
Numerous starting or closing, such power consumption is bigger, and does not have the accuracy for improving physiological detection.
Therefore the utility model provides a kind of new scheme to solve the problems, such as this.
Utility model content
In view of the deficienciess of the prior art, the utility model aim is to provide a kind of wireless transmission detecting device, will examine
The physiologic information for surveying module detection is converted to digital square-wave after filtering, amplification, amendment, pressure stabilizing, is transmitted to processing unit,
The problem of being transmitted, being avoided in signals transmission by Electromagnetic Interference by wireless transport module by processing unit again,
Improve the precision of signal detection.
Its technical solution solved is, including amplitude modulation circuit, fixed amplitude circuit, voltage-frequency conversion circuit, feature
It is, the amplitude modulation circuit connection fixed amplitude circuit, fixed amplitude circuit connects voltage-frequency conversion circuit；
The fixed amplitude circuit includes operational amplifier AR2, the inverting input terminal connection amplitude modulation electricity of operational amplifier AR2
The output signal on road, the non-inverting input terminal of operational amplifier AR2 be separately connected one end of resistance R4, potentiometer RP1 left end and
The other end at adjustable end, resistance R4 connects power supply+5V, and the right end of potentiometer RP1 is separately connected one end of resistance R5, diode D1
Cathode, the other end of resistance R5 be separately connected the anode of diode D1, the output end of operational amplifier AR2, resistance R6 one
It holds, one end of resistance R7, the other end of resistance R7 is the output signal of fixed amplitude circuit, the other end and operational amplifier of resistance R6
The end VCC of AR2 connects power supply+15V, and the end GND of operational amplifier AR2 connects ground；
The voltage-frequency conversion circuit includes metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 connects fixed ampllitude with the cathode of diode D2
The output signal of circuit, the source electrode of metal-oxide-semiconductor Q1 are separately connected the anode of diode D2, one end of resistance R8, NE555 chip U 1
Pin 7, the other end of resistance R8 is separately connected the pin 2 and pin 6, one end of resistance R7, variable capacitance of NE555 chip U1
The other end of one end of C0, variable capacitance C0 connects ground, and the drain electrode of metal-oxide-semiconductor Q1, the pin 4 of NE555 chip U1 and pin 8 connect
Power supply+5V is met, the pin 1 of NE555 chip U 1 connects ground, and the pin 5 of NE555 chip U1 is separately connected one end of capacitor C2, electricity
One end of R9 is hindered, the other end of capacitor C2 connects ground with the other end of resistance R9, and the connection of pin 3 of NE555 chip U 1 passes through electricity
Resistance R10 is connected to processing unit.
The utility model is skillfully constructed, structure is simple, the physiologic information of detection module detection, through T-type filtering, ratio enlargement
The inverting input terminal for entering operational amplifier AR2 afterwards, with the accurate life in real time of error correction voltage superposition output inputted simultaneously
Manage information, after small fluctuation is eliminated through hysteresis comparator after enter NE555 chip U1 be core voltage to frequency convert electricity
Road is converted to digital square-wave and is transmitted to processing unit, then is transmitted by processing unit by wireless transport module, avoids
The problem of in signals transmission by Electromagnetic Interference, improve the precision of signal detection.
Detailed description of the invention
Fig. 1 is the circuit connection module map of the utility model.
Fig. 2 is the circuit connection schematic diagram of the utility model.
Specific embodiment
For aforementioned and other technology contents, feature and effect in relation to the utility model, following cooperation with reference to figures 1 through
Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
Embodiment one, a kind of wireless transmission detecting device, amplitude modulation circuit will test the physiologic information of module detection, warp
The inverting input terminal for entering operational amplifier AR2 after T-type filtering, ratio enlargement, with the error correction voltage superposition inputted simultaneously
Accurate real-time physiological information is exported, enters fixed amplitude circuit later and is eliminated through the hysteresis comparator that operational amplifier AR3 is core
Small fluctuation is converted to digital square-wave into the voltage frequency conversioning circuit that NE555 chip U1 is core and is transmitted to place
Unit is managed, then is transmitted by processing unit by wireless transport module, is avoided in signals transmission by Electromagnetic Interference
The problem of, improve the precision of signal detection；The fixed amplitude circuit is disappeared by the hysteresis comparator that operational amplifier AR3 is core
Except small fluctuation, including operational amplifier AR2, the inverting input terminal of operational amplifier AR2 connects the defeated of amplitude modulation circuit
Signal out, the non-inverting input terminal of operational amplifier AR2 are separately connected the left end and adjustable end of one end of resistance R4, potentiometer RP1,
The other end of resistance R4 connects power supply+5V, and the right end of potentiometer RP1 is separately connected the cathode of one end of resistance R5, diode D1,
The other end of resistance R5 is separately connected the anode of diode D1, the output end of operational amplifier AR2, one end of resistance R6, resistance
One end of R7, the other end of resistance R7 are the output signal of fixed amplitude circuit, the other end of resistance R6 and operational amplifier AR2's
The end VCC connects power supply+15V, and the end GND of operational amplifier AR2 connects ground；
The voltage signal that fixed amplitude circuit exports is converted to digital square-wave by the voltage-frequency conversion circuit, wherein
That metal-oxide-semiconductor Q1 includes metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 connects the output signal of fixed amplitude circuit, MOS with the cathode of diode D2
The source electrode of pipe Q1 is separately connected the pin 7 of the anode of diode D2, one end of resistance R8, NE555 chip U 1, and resistance R8's is another
One end be separately connected NE555 chip U1 pin 2 and pin 6, one end of resistance R7, variable capacitance C0 one end, variable capacitance
The other end of C0 connects ground, and the drain electrode of metal-oxide-semiconductor Q1, the pin 4 of NE555 chip U1 and pin 8 are all connected with power supply+5V, NE555 core
The pin 1 of piece U 1 connects ground, and the pin 5 of NE555 chip U1 is separately connected one end of one end of capacitor C2, resistance R9, capacitor C2
The other end ground is connected with the other end of resistance R9, the pin 3 of NE555 chip U 1, which is connected, is connected to wireless mould by resistance R10
The I/O mouth of block chip CC2430.
Embodiment two, on the basis of example 1, the amplitude modulation circuit will test the physiologic information of module detection,
The inverting input terminal for entering operational amplifier AR2 after T-type filtering, ratio enlargement, with the error correction voltage (inspection inputted simultaneously
Survey module detection error and signal transmit error) the accurate real-time physiological information of superposition output, including inductance L1, a left side of inductance L1
End connects tested physiologic information, and the right end of inductance L1 is separately connected one end of one end of ground capacity C1, inductance L2, inductance L2's
The other end connects the non-inverting input terminal of operational amplifier AR1, and the inverting input terminal of operational amplifier AR1 is separately connected ground resistance
One end of R2, resistance R3 one end, the output end of the other end connection operational amplifier AR1 of resistance R3, operational amplifier AR2's
Inverting input terminal, one end of resistance R5, one end of resistance R4, potentiometer RP2 left end and adjustable end, the other end of resistance R4 connects
Power supply+12V is met, the right end of potentiometer RP2 connects ground, and the non-inverting input terminal of operational amplifier AR2 is by resistance R6 connection, electric
The output end of the other end and operational amplifier AR2 that hinder R5 is the output signal of amplitude modulation circuit.
The utility model carry out using when, amplitude modulation circuit will test module detection physiologic information, through T-type
The inverting input terminal for entering operational amplifier AR2 after filtering, ratio enlargement, with error correction voltage (the detection mould inputted simultaneously
Block detection error and signal transmit error) the accurate real-time physiological information of superposition output, enter fixed amplitude circuit later and is put through operation
Big device AR3 is that the hysteresis comparator of core eliminates small fluctuation, into the voltage to frequency convert electricity that NE555 chip U1 is core
Road is converted to digital square-wave and is transmitted to processing unit, then is transmitted by processing unit by wireless transport module, avoids
The problem of in signals transmission by Electromagnetic Interference, improve the precision of signal detection.
The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in
Within scope of protection of the utility model.
Claims (2)
1. a kind of wireless transmission detecting device, including amplitude modulation circuit, fixed amplitude circuit, voltage-frequency conversion circuit, feature
It is, the amplitude modulation circuit connection fixed amplitude circuit, fixed amplitude circuit connects voltage-frequency conversion circuit；
The fixed amplitude circuit includes operational amplifier AR2, the inverting input terminal connection amplitude modulation circuit of operational amplifier AR2
Output signal, the non-inverting input terminal of operational amplifier AR2 are separately connected one end of resistance R4, the left end of potentiometer RP1 and adjustable
End, the other end of resistance R4 connect power supply+5V, the right end of potentiometer RP1 be separately connected one end of resistance R5, diode D1 it is negative
Pole, the other end of resistance R5 are separately connected the anode of diode D1, the output end of operational amplifier AR2, one end of resistance R6, electricity
Hinder one end of R7, the other end of resistance R7 is the output signal of fixed amplitude circuit, the other end of resistance R6 and operational amplifier AR2's
The end VCC connects power supply+15V, and the end GND of operational amplifier AR2 connects ground；
The voltage-frequency conversion circuit includes metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 connects fixed amplitude circuit with the cathode of diode D2
Output signal, the source electrode of metal-oxide-semiconductor Q1 is separately connected the anode of diode D2, one end of resistance R8, NE555 chip U 1 draw
Foot 7, the other end of resistance R8 are separately connected the pin 2 and pin 6, one end of resistance R7, variable capacitance C0 of NE555 chip U1
The other end of one end, variable capacitance C0 connects ground, and the drain electrode of metal-oxide-semiconductor Q1, the pin 4 of NE555 chip U1 and pin 8 are all connected with electricity
The pin 1 of source+5V, NE555 chip U 1 connects ground, and the pin 5 of NE555 chip U1 is separately connected one end of capacitor C2, resistance R9
One end, the other end of capacitor C2 connected with the other end of resistance R9 ground, NE555 chip U 1 pin 3 connection passes through resistance
R10 is connected to the I/O mouth of wireless module chip CC2430.
2. a kind of wireless transmission detecting device according to claim 1, which is characterized in that the amplitude modulation circuit includes
The left end of inductance L1, inductance L1 connect tested physiologic information, and the right end of inductance L1 is separately connected one end of ground capacity C1, inductance
One end of L2, the non-inverting input terminal of the other end connection operational amplifier AR1 of inductance L2, the anti-phase input of operational amplifier AR1
End is separately connected one end of one end of ground resistance R2, resistance R3, the output of the other end connection operational amplifier AR1 of resistance R3
End, the inverting input terminal of operational amplifier AR2, one end of resistance R5, one end of resistance R4, the left end of potentiometer RP2 and adjustable
End, the other end of resistance R4 connect power supply+12V, and the right end of potentiometer RP2 connects ground, the non-inverting input terminal of operational amplifier AR2
By resistance R6 connection ground, the other end of resistance R5 and the output end of operational amplifier AR2 are believed for the output of amplitude modulation circuit
Number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167853.4U CN208589134U (en) | 2018-07-23 | 2018-07-23 | A kind of wireless transmission detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167853.4U CN208589134U (en) | 2018-07-23 | 2018-07-23 | A kind of wireless transmission detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208589134U true CN208589134U (en) | 2019-03-08 |
Family
ID=65541732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821167853.4U Expired - Fee Related CN208589134U (en) | 2018-07-23 | 2018-07-23 | A kind of wireless transmission detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208589134U (en) |
-
2018
- 2018-07-23 CN CN201821167853.4U patent/CN208589134U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190308 Termination date: 20210723 |