CN106301414A - Sampling maintenance wireless signal processing system based on Internet of Things - Google Patents
Sampling maintenance wireless signal processing system based on Internet of Things Download PDFInfo
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- CN106301414A CN106301414A CN201610683295.6A CN201610683295A CN106301414A CN 106301414 A CN106301414 A CN 106301414A CN 201610683295 A CN201610683295 A CN 201610683295A CN 106301414 A CN106301414 A CN 106301414A
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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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- 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
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Abstract
The invention discloses a kind of sampling maintenance wireless signal processing system based on Internet of Things, it is characterized in that: mainly by processing chip U, audion VT4, wireless signal receiver A, polar capacitor C10, diode D6, Zener diode D5, sampling hold circuit, signal wave reception filtering circuit, the audion bias amplifier being serially connected between signal wave reception filtering circuit and sampling hold circuit, and the composition such as the signal level regulation circuit that is connected of the OUT pin that with the negative pole of polar capacitor C11 and processes chip U respectively and G pin.Interference signal in the signal of telecommunication received can be suppressed or eliminate by the present invention, and the dutycycle of the square-wave signal of the digital signal frequency after processing chip U conversion can also be adjusted by the present invention, the level making the digital signal of output keeps stable, thus improves the present invention accuracy to signal processing.
Description
Technical field
The present invention relates to automation field, specifically refer to a kind of sampling maintenance wireless signal based on Internet of Things and process
System.
Background technology
The application of modern agricultural technology brings huge economy, society and ecological benefits for society.Along with society
Development, the consciousness of people's water saving gradually strengthens, and in order to reach the purpose of water saving, people generally use agricultural Internet of Things to come farming
The irrigation of thing is managed, to improve the effect of irrigation water efficiency and irrigation；The many employings of people at present are by humidity sensor, nothing
Line signal acquiring system, wireless signal processing system, wireless control system, video monitoring system and automatic water sprinkler systme composition
Agricultural Internet of Things；Wherein the wireless control system in agricultural Internet of Things is then the number by being transmitted wireless signal processing system
Word information controls automatic water sprinkler systme, and therefore, can automatic water sprinkler systme irrigate then for crops accurately accurately
Depend on that wireless signal processing system is the most accurate to signal processing.
But, the wireless signal processing system of existing agricultural Internet of Things there is also signal in terms of the process of the docking collection of letters number
The process of the low problem of accuracy processed, the i.e. humidity information that humidity sensor is transmitted by its wireless signal processing system is accurate
Really property is relatively low, causes the wireless control system in agricultural Internet of Things cannot control automatic water sprinkler systme accurately and carries out crops
Irrigate, the serious growth that have impact on crops.
Therefore it provides a kind of agriculture Internet of Things wireless signal processing system that can accurately process signal is to work as
It is engaged in anxious.
Summary of the invention
It is an object of the invention to the process in the docking collection of letters number of gram wireless signal processing system of existing agricultural Internet of Things
Aspect there is also the defect that the accuracy of signal processing is low, it is provided that a kind of sampling maintenance wireless signal based on Internet of Things processes
System.
The purpose of the present invention is by following technical proposals reality: sampling maintenance wireless signal based on Internet of Things processes system
System, mainly by processing chip U, audion VT4, wireless signal receiver A, the sampling being connected with the IN pin processing chip U
Holding circuit, positive pole is connected with the emitter stage of audion VT4, negative pole after resistance R16 with process chip U COMP pin phase
The polar capacitor C10 connected, one end is connected with the COMP pin processing chip U, the GND pin of the other end and process chip U
After being connected resistance R18, the P pole of ground connection base stage with audion VT4 after resistance R17 be connected, N pole with process chip U's
The diode D6 that OUT pin is connected, positive pole colelctor electrode with audion VT4 after inductance L2 is connected, negative pole is through resistance R19
Polar capacitor C11, the N pole being connected with the CLK pin processing chip U afterwards is connected with the VC pin processing chip U, the other end
The Zener diode D5 being connected with external power source VCC, the signal being connected with the signal output part of wireless signal receiver A connects
Receipts filter circuit, the audion bias amplifier being serially connected between signal wave reception filtering circuit and sampling hold circuit, and
The signal level regulation circuit that the OUT pin with the negative pole of polar capacitor C11 and processing chip U respectively and G pin are connected
Composition；Described audion bias amplifier is connected with the P pole of signal wave reception filtering circuit and Zener diode D5 the most respectively；
The described B pin of process chip U is connected with the negative pole of polar capacitor C10.
Described sampling hold circuit is by amplifier P3, amplifier P4, audion VT6, and audion VT7, P pole is through resistance R27
The diode D9 that positive pole with amplifier P3 is connected afterwards, negative pole is connected with audion bias amplifier, positive pole is through resistance
Polar capacitor C15, the P pole that after R28, the negative pole with amplifier P3 is connected, negative pole is connected with the base stage of audion VT7 with put
The negative pole of big device P3 be connected after the diode D10 that is connected of ground connection, N pole colelctor electrode with audion VT7 after inductance L3, just
Pole emitter stage with audion VT6 after resistance R32 is connected, the polar capacitor C17 of minus earth, and positive pole is after resistance R31
Be connected with the positive pole of amplifier P4, polar capacitor C18 that negative pole outfan with amplifier P4 after resistance R33 is connected,
Positive pole P pole with diode D10 after resistance R29 is connected, negative pole negative pole with polar capacitor C18 after resistance R30 is connected
The polar capacitor C16 connect, the polarity that positive pole is connected with the negative pole of amplifier P4, negative pole is connected with the outfan of amplifier P4
Electric capacity C19, and P pole is connected with the negative pole of amplifier P4, N pole outfan with amplifier P4 after resistance R34 is connected
Diode D11 composition；The base stage of described audion VT6 is connected with the outfan of amplifier P3, its colelctor electrode and audion
The emitter stage of VT7 is connected；The positive pole of described amplifier P4 also emitter stage with audion VT6 is connected, its outfan and place
The IN pin of reason chip U is connected.
Described signal wave reception filtering circuit is connected with the base stage of audion VT2 by audion VT1, audion VT2, positive pole
Connect, polar capacitor C3 that negative pole is connected with the signal output part of wireless receiver A, positive pole after resistance R3 with polar capacitor C3
Negative pole be connected, polar capacitor C4, the N pole of minus earth emitter stage with audion VT2 after resistance R6 is connected, P pole
The diode D2 that negative pole with polar capacitor C4 is connected after resistance R5, one end is connected with the base stage of audion VT2, another
The adjustable resistance R4 that is connected with the P pole of diode D2 of end, negative pole is connected with the base stage of audion VT2, positive pole is through resistance R2
Polar capacitor C2, the P pole that colelctor electrode with audion VT2 is connected afterwards is connected with the base stage of audion VT1, N pole and three poles
The diode D1 that the colelctor electrode of pipe VT2 is connected, and positive pole emitter stage with audion VT1 after resistance R1 be connected, negative
The polar capacitor C1 composition of pole ground connection；The colelctor electrode of described audion VT1 is collectively forming signal with the colelctor electrode of audion VT2 and connects
Receive filter circuit to be outfan and be connected with audion bias amplifier.
Described audion bias amplifier by amplifier P1, audion VT3, N pole after resistance R9 with audion VT3's
The diode D3 that base stage is connected, P pole is connected with the colelctor electrode of audion VT2, positive pole is connected with the P pole of diode D3,
The polar capacitor C5 that negative pole negative pole with amplifier P1 after resistance R7 is connected, positive pole negative with amplifier P1 after resistance R8
The polar capacitor C6 that pole is connected, negative pole is connected with the outfan of amplifier P1, negative pole after resistance R10 with amplifier P1's
Outfan is connected, positive pole colelctor electrode with audion VT3 after resistance R11 is connected polar capacitor C8, P pole and amplifier
The diode D4 that the positive pole of P1 is connected, N pole colelctor electrode with audion VT3 after resistance R12 is connected, negative pole and diode
The polar capacitor that the P pole of D4 is connected, positive pole is sequentially connected through inductance L1 colelctor electrode with audion VT3 after resistance R13
C7, one end is connected with the junction point of inductance L1 with resistance R13, the resistance R14 of other end ground connection, and positive pole and amplifier P1
The polar capacitor C9 that outfan is connected, negative pole is connected with the N pole of diode D9 after resistance R15 composition；Described amplification
The positive pole of device P1 is also connected with the N pole of diode D3, its minus earth；The outfan of described amplifier P1 also with audion
The emitter stage of VT3 is connected；The junction point of described inductance L1 and resistance R13 is also connected with the P pole of Zener diode D5.
Described signal level regulation circuit is by field effect transistor MOS, amplifier P2, audion VT5, positive pole and field effect transistor
The drain electrode of MOS is connected, negative pole colelctor electrode with audion VT5 after resistance R22 is connected polar capacitor C13, P pole and pole
The negative pole of property electric capacity C13 be connected after the diode D7 that is connected with the negative pole of amplifier P2 of ground connection, N pole, one end and audion
The adjustable resistance R23 that the colelctor electrode of VT5 is connected, the other end is connected with the negative pole of amplifier P2, positive pole after resistance R24 with
Polar capacitor C14, the P pole that the negative pole of amplifier P2 is connected, negative pole outfan with amplifier P2 after resistance R25 is connected
The diode that after being connected with the negative pole of amplifier P2, ground connection, N pole negative pole with polar capacitor C14 after resistance R26 is connected
D8, and positive pole grid with field effect transistor MOS after resistance R20 is connected, negative pole after resistance R221 with amplifier P2's
The polar capacitor C12 composition that outfan is connected；The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C11；
The base stage of described audion VT5 is connected with the OUT pin processing chip U, its emitter stage is connected with the positive pole of amplifier P2；
The positive pole of described polar capacitor C12 is also connected with the G pin processing chip U；The outfan of described amplifier P2 is as signal
The outfan of level adjustment circuit.
For the practical effect of the present invention, described process chip U the most preferentially have employed the integrated chip of MB40978 and comes real
Existing.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) the interference signal in the signal of telecommunication received can be suppressed or eliminate by the present invention, and the present invention can also be right
The dutycycle of the square-wave signal processing the digital signal frequency after chip U conversion is adjusted, and makes the digital signal of output
Level keeps stable, thus improves the present invention accuracy to signal processing, makes the wireless control system in agricultural Internet of Things
Automatic water sprinkler systme can accurately be controlled crops are irrigated.
(2) present invention can make the signal of telecommunication keep being basically unchanged before being changed, it is ensured that the process chip U of the present invention turns
Change precision, ensure that the present invention accuracy to signal processing.
(3) amplitude of the signal of telecommunication can be adjusted by the present invention, and can suppress common-mode signal, ensures that this
The invention accuracy to signal processing.
(4) the process chip U of the present invention the most preferentially have employed the integrated chip of MB40978 and realizes, this chip and external electrical
Sub-element combines, and can effectively load the interference of external electromagnetic ripple signal, thus improve the present invention standard to signal processing
Really property and reliability.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the sampling hold circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention is mainly by processing chip U, audion VT4, wireless signal receiver A, resistance R16, electricity
Resistance R17, resistance R18, resistance R19, inductance L2, polar capacitor C10, polar capacitor C11, Zener diode D5, diode D6, adopt
Sample holding circuit, signal wave reception filtering circuit, audion bias amplifier, and signal level regulation circuit composition.
During connection, sampling hold circuit is connected with the IN pin processing chip U.The positive pole of polar capacitor C10 and three poles
The emitter stage of pipe VT4 is connected, and negative pole is connected with the COMP pin processing chip U after resistance R16.One end of resistance R18
With process chip U COMP pin be connected, the other end with process chip U GND pin be connected after ground connection.Diode D6's
P pole base stage with audion VT4 after resistance R17 is connected, and N pole is connected with the OUT pin processing chip U.Polar capacitor
The positive pole of C11 colelctor electrode with audion VT4 after inductance L2 is connected, negative pole after resistance R19 with the CLK processing chip U
Pin is connected.
Meanwhile, the N pole of Zener diode D5 is connected with the VC pin processing chip U, the other end and external power source VCC phase
Connect.Signal wave reception filtering circuit is connected with the signal output part of wireless signal receiver A.Audion bias amplifier string
It is connected between signal wave reception filtering circuit and sampling hold circuit.Signal level regulation circuit negative with polar capacitor C11 respectively
Pole is connected with the OUT pin processing chip U and G pin.
Described audion bias amplifier P with signal wave reception filtering circuit and Zener diode D5 the most respectively is extremely connected
Connect；The described B pin of process chip U is connected with the negative pole of polar capacitor C10.During enforcement, the VC of the process chip U of the present invention
Pin is connected with outside 12V DC voltage.For the practical effect of the present invention, described process chip U the most preferentially adopts
Realize with the integrated chip of MB40978.Wherein, audion VT4, polar capacitor C10, diode D6, resistance R16 and resistance
The demagnetizer that R17 is formed, this demagnetizer can eliminate or suppress the interference to process chip U of the electromagnetic wave in the external world, make process chip U
The signal of telecommunication can accurately be carried out conversion process, effectively raise the accuracy to signal processing of the present invention.
Meanwhile, the outfan of its level adjustment circuit as the present invention outfan and with agricultural Internet of Things controlled in wireless
The input of the controller of system is connected, and this wireless control system is then that the digital signal transmitted according to the present invention controls
The soil of crops is irrigated by automatic water sprinkler systme, and therefore the present invention improves the accuracy to signal processing, i.e. improves
The accuracy that crops are irrigated by agriculture Internet of Things.
Further, described signal wave reception filtering circuit is by audion VT1, audion VT2, resistance R1, resistance R2, resistance
R3, adjustable resistance R4, resistance R5, resistance R6, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, two poles
Pipe D1, and diode D2 composition.
During connection, the positive pole of polar capacitor C3 is connected with the base stage of audion VT2, negative pole and the letter of wireless receiver A
Number outfan is connected.The positive pole of polar capacitor C4 negative pole with polar capacitor C3 after resistance R3 is connected, minus earth.Two
The N pole of pole pipe D2 emitter stage with audion VT2 after resistance R6 is connected, P pole negative with polar capacitor C4 after resistance R5
Pole is connected.One end of adjustable resistance R4 is connected with the base stage of audion VT2, and the other end is connected with the P pole of diode D2.
Meanwhile, the negative pole of polar capacitor C2 is connected with the base stage of audion VT2, positive pole after resistance R2 with audion
The colelctor electrode of VT2 is connected.The P pole of diode D1 is connected with the base stage of audion VT1, N pole and the colelctor electrode of audion VT2
It is connected.The positive pole of polar capacitor C1 emitter stage with audion VT1 after resistance R1 is connected, minus earth.Described three poles
It is outfan inclined with audion that the colelctor electrode of pipe VT1 and the colelctor electrode of audion VT2 are collectively forming signal wave reception filtering circuit
Put amplifying circuit to be connected.
During enforcement, the signal of telecommunication that wireless signal receiver A can be transmitted by this signal wave reception filtering circuit filters, i.e.
Forming multi-stage filter by polar capacitor C3 and polar capacitor C2 and polar capacitor C4, this multi-stage filter is in the signal of telecommunication
Interference signal carry out filtration repeatedly, meanwhile, by the resistance of adjustable resistance R4 is adjusted, make the low frequency in the signal of telecommunication
Signal cannot pass through, i.e. garbage signal is prevented from；Reference signal then can be passed through smoothly, thus the mistake of the collection of letters number that achieves a butt joint
Filter, it is ensured that the present invention accuracy to signal processing.
Further, described audion bias amplifier by amplifier P1, audion VT3, resistance R7, resistance R8,
Resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, polar capacitor C5, polar capacitor C6,
Polar capacitor C7, polar capacitor C8, polar capacitor C9, diode D3, and diode D4 form.
During connection, the N pole of diode D3 base stage with audion VT3 after resistance R9 is connected, P pole and audion VT2
Colelctor electrode be connected.The positive pole of polar capacitor C5 is connected with the P pole of diode D3, negative pole after resistance R7 with amplifier P1
Negative pole be connected.The positive pole of polar capacitor C6 negative pole with amplifier P1 after resistance R8 is connected, negative pole and amplifier P1
Outfan be connected.The negative pole of polar capacitor C8 outfan with amplifier P1 after resistance R10 is connected, and positive pole is through resistance
After R11, the colelctor electrode with audion VT3 is connected.
Wherein, the P pole of diode D4 is connected with the positive pole of amplifier P1, N pole after resistance R12 with audion VT3's
Colelctor electrode is connected.The negative pole of polar capacitor C7 is connected with the P pole of diode D4, and positive pole is sequentially through inductance L1 and resistance R13
Colelctor electrode with audion VT3 is connected afterwards.One end of resistance R14 is connected with the junction point of inductance L1 with resistance R13, another
End ground connection.The positive pole of polar capacitor C9 is connected with the outfan of amplifier P1, negative pole after resistance R15 with the N of diode D9
Pole is connected.
The positive pole of described amplifier P1 is also connected with the N pole of diode D3, its minus earth；Described amplifier P1's is defeated
Go out the end emitter stage also with audion VT3 to be connected；The junction point of described inductance L1 and resistance R13 is also with Zener diode D5's
P pole is connected.This audion bias amplifier is by amplifier P1 and audion VT3 and above-mentioned other electron component shape
The amplifier become, and the amplitude of the signal of telecommunication can be adjusted by this amplifier, and common-mode signal can be suppressed, thus really
Protect the present invention accuracy to signal processing.
Yet further, described signal level regulation circuit is by field effect transistor MOS, amplifier P2, audion VT5, resistance
R20, resistance R21, resistance R22, adjustable resistance R23, resistance R24, resistance R25, resistance R26, polar capacitor C12, polar capacitor
C13, polar capacitor C14, diode D7, and diode D8 form.
During connection, the positive pole of polar capacitor C13 is connected with the drain electrode of field effect transistor MOS, negative pole after resistance R22 with three
The colelctor electrode of pole pipe VT5 is connected.The P pole of diode D7 be connected with the negative pole of polar capacitor C13 after ground connection, N pole and amplification
The negative pole of device P2 is connected.One end of adjustable resistance R23 is connected with the colelctor electrode of audion VT5, the other end and amplifier P2
Negative pole be connected.
Meanwhile, the positive pole of polar capacitor C14 negative pole with amplifier P2 after resistance R24 is connected, and negative pole is through resistance R25
Outfan with amplifier P2 is connected afterwards.The P pole of diode D8 be connected with the negative pole of amplifier P2 after ground connection, N pole is through electricity
It is connected with the negative pole of polar capacitor C14 after resistance R26.The positive pole of polar capacitor C12 after resistance R20 with field effect transistor MOS
Grid is connected, and negative pole outfan with amplifier P2 after resistance R221 is connected.
The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C11；The base stage of described audion VT5 with
The OUT pin processing chip U is connected, and its emitter stage is connected with the positive pole of amplifier P2；The positive pole of described polar capacitor C12
Also it is connected with the G pin processing chip U；The outfan of described amplifier P2 is as the outfan of signal level regulation circuit.
During enforcement, the square wave of the digital signal frequency after processing chip U conversion can be believed by this signal level regulation circuit
Number dutycycle be adjusted, make the level of the digital signal of output keep stable, thus improve the present invention to signal processing
Accuracy.Meanwhile, the outfan of its level adjustment circuit as the present invention outfan and with agricultural Internet of Things wireless controlled
The input of the controller of system processed is connected, and this wireless control system is then that the digital signal transmitted according to the present invention is controlled
The soil of crops is irrigated by automatic water sprinkler systme processed, and therefore the present invention improves the accuracy to signal processing, i.e. carries
The accuracy that crops are irrigated by high agriculture Internet of Things.
As in figure 2 it is shown, described sampling hold circuit is by amplifier P3, amplifier P4, audion VT6, audion VT7, electricity
Resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R32, resistance R33, resistance R34, polar capacitor C15, pole
Property electric capacity C16, polar capacitor C17, polar capacitor C18, diode D9, diode D10, diode D11, and inductance L3 group
Become.
During connection, the P pole of diode D9 positive pole with amplifier P3 after resistance R27 is connected, and negative pole is inclined with audion
Put amplifying circuit to be connected.The positive pole of polar capacitor C15 negative pole with amplifier P3 after resistance R28 is connected, negative pole and three
The base stage of pole pipe VT7 is connected.The P pole of diode D10 be connected with the negative pole of amplifier P3 after ground connection, N pole is after inductance L3
It is connected with the colelctor electrode of audion VT7.The positive pole of polar capacitor C17 emitter stage with audion VT6 after resistance R32 is connected
Connect, minus earth.
Meanwhile, the positive pole of polar capacitor C18 positive pole with amplifier P4 after resistance R31 is connected, and negative pole is through resistance R33
Outfan with amplifier P4 is connected afterwards.The positive pole of polar capacitor C16 P with diode D10 after resistance R29 is extremely connected
Connecing, negative pole negative pole with polar capacitor C18 after resistance R30 is connected.The positive pole of polar capacitor C19 and the negative pole of amplifier P4
Being connected, negative pole is connected with the outfan of amplifier P4.The P pole of diode D11 is connected with the negative pole of amplifier P4, N pole
After resistance R34, the outfan with amplifier P4 is connected.
The base stage of described audion VT6 is connected with the outfan of amplifier P3, its colelctor electrode and the transmitting of audion VT7
Pole is connected；The positive pole of described amplifier P4 also emitter stage with audion VT6 is connected, its outfan with process chip U's
IN pin is connected.
During enforcement, the signal of telecommunication is transmitted processing chip U when changing, and is transformed into EOC output number from startup
Word signal, needs certain conversion time.Within this conversion time, the signal of telecommunication to be held essentially constant, otherwise conversion accuracy
There is no guarantee that, particularly when frequency input signal is higher, the biggest transformed error can be caused.Prevent the product of this error
Raw, it is necessary to make the level of input signal maintain when processing chip U conversion and starting stable, and processing chip U EOC
After can follow the tracks of again the change of input signal.Therefore the present invention is provided with sampling hold circuit at the signal input part processing chip U,
When the signal of telecommunication of this sampling hold circuit output is high level, the base stage of audion VT6 turns on emitter stage, the signal of telecommunication of input
It is added on amplifier P4 by audion VT6 so that the change of the voltage follow signal of telecommunication input signal on the positive pole of amplifier P4
Changing and change, this period is referred to as the phase of following the tracks of.When the signal of telecommunication of sampling hold circuit output is low level, the base of audion VT6
Pole disconnects with emitter stage, and it is constant also that the now holding of the voltage on the positive pole of amplifier P4 audion VT6 disconnects the magnitude of voltage of moment
Changing the signal of telecommunication etc. pending chip U, this period is referred to as keeping the phase；This sampling hold circuit runs repeatedly with this,
The signal of telecommunication of the input level before processed chip U changes is made to remain stable, it is ensured that to process the chip U electricity to input
The precision of signal conversion, ensures that the present invention accuracy to signal processing.
As it has been described above, just can well realize the present invention.
Claims (6)
1. sampling maintenance wireless signal processing system based on Internet of Things, it is characterised in that: mainly by processing chip U, three poles
Pipe VT4, wireless signal receiver A, the sampling hold circuit being connected with the IN pin processing chip U, positive pole and audion VT4
Emitter stage be connected, negative pole after resistance R16 with the polar capacitor C10 that is connected of COMP pin processing chip U, one end with
Resistance R18, the P pole of ground connection after the COMP pin of process chip U is connected, the other end is connected with the GND pin of process chip U
The diode D6 that base stage with audion VT4 is connected after resistance R17, N pole is connected with the OUT pin processing chip U, just
Pole colelctor electrode with audion VT4 after inductance L2 is connected, negative pole is connected with the CLK pin processing chip U after resistance R19
Polar capacitor C11, the N pole connect and the voltage stabilizing that VC pin is connected, the other end is connected with external power source VCC processing chip U
Diode D5, the signal wave reception filtering circuit being connected with the signal output part of wireless signal receiver A, it is serially connected in signal and receives
Audion bias amplifier between filter circuit and sampling hold circuit, and respectively with the negative pole of polar capacitor C11 and
The signal level regulation circuit composition that the OUT pin of process chip U and G pin are connected；Electricity is amplified in the biasing of described audion
Road is connected with the P pole of signal wave reception filtering circuit and Zener diode D5 the most respectively；The B pin of described process chip U and pole
The negative pole of property electric capacity C10 is connected.
Sampling maintenance wireless signal processing system based on Internet of Things the most according to claim 1, it is characterised in that: institute
State sampling hold circuit by amplifier P3, amplifier P4, audion VT6, audion VT7, P pole after resistance R27 with amplifier
The diode D9 that the positive pole of P3 is connected, negative pole is connected with audion bias amplifier, positive pole after resistance R28 with amplification
Polar capacitor C15, the P pole that the negative pole of device P3 is connected, negative pole is connected with the base stage of audion VT7 and the negative pole of amplifier P3
The diode D10 that after being connected, ground connection, N pole colelctor electrode with audion VT7 after inductance L3 is connected, positive pole is through resistance R32
Afterwards the emitter stage with audion VT6 be connected, the polar capacitor C17 of minus earth, positive pole after resistance R31 with amplifier P4's
The polar capacitor C18 that positive pole is connected, negative pole outfan with amplifier P4 after resistance R33 is connected, positive pole is through resistance R29
Be connected with the P pole of diode D10 afterwards, polar capacitor that negative pole negative pole with polar capacitor C18 after resistance R30 is connected
C16, the polar capacitor C19 that positive pole is connected with the negative pole of amplifier P4, negative pole is connected with the outfan of amplifier P4, and
The diode D11 group that P pole is connected with the negative pole of amplifier P4, N pole outfan with amplifier P4 after resistance R34 is connected
Become；The base stage of described audion VT6 is connected with the outfan of amplifier P3, the emitter stage phase of its colelctor electrode and audion VT7
Connect；The positive pole of described amplifier P4 also emitter stage with audion VT6 is connected, its outfan and the IN pipe processing chip U
Foot is connected.
Sampling maintenance wireless signal processing system based on Internet of Things the most according to claim 2, it is characterised in that: institute
Stating signal wave reception filtering circuit by audion VT1, audion VT2, positive pole is connected with the base stage of audion VT2, negative pole and nothing
The polar capacitor C3 that the signal output part of line receiver A is connected, positive pole negative pole with polar capacitor C3 after resistance R3 is connected
Connect, polar capacitor C4, the N pole of minus earth emitter stage with audion VT2 after resistance R6 is connected, P pole is after resistance R5
The diode D2 being connected with the negative pole of polar capacitor C4, one end is connected with the base stage of audion VT2, the other end and diode
The adjustable resistance R4 that the P pole of D2 is connected, negative pole is connected with the base stage of audion VT2, positive pole after resistance R2 with audion
Polar capacitor C2, the P pole that the colelctor electrode of VT2 is connected is connected with the base stage of audion VT1, the current collection of N pole and audion VT2
The diode D1 that pole is connected, and positive pole emitter stage with audion VT1 after resistance R1 is connected, the polarity of minus earth
Electric capacity C1 forms；The colelctor electrode of described audion VT1 is collectively forming signal wave reception filtering circuit with the colelctor electrode of audion VT2
Outfan is also connected with audion bias amplifier.
Sampling maintenance wireless signal processing system based on Internet of Things the most according to claim 3, it is characterised in that: institute
Stating audion bias amplifier by amplifier P1, audion VT3, N pole base stage with audion VT3 after resistance R9 is connected
Connect, diode D3 that P pole is connected with the colelctor electrode of audion VT2, positive pole is connected with the P pole of diode D3, negative pole is through electricity
The polar capacitor C5 that is connected with the negative pole of amplifier P1 after resistance R7, positive pole negative pole with amplifier P1 after resistance R8 is connected
Connect, polar capacitor C6 that negative pole is connected with the outfan of amplifier P1, negative pole after resistance R10 with the outfan of amplifier P1
Be connected, polar capacitor C8, P pole that positive pole colelctor electrode with audion VT3 after resistance R11 is connected with amplifier P1 just
The diode D4 that pole is connected, N pole colelctor electrode with audion VT3 after resistance R12 is connected, the P of negative pole and diode D4
The polar capacitor C7 that pole is connected, positive pole is sequentially connected through inductance L1 colelctor electrode with audion VT3 after resistance R13, one
End is connected with the junction point of inductance L1 with resistance R13, the resistance R14 of other end ground connection, and positive pole and amplifier P1's is defeated
Go out the polar capacitor C9 composition that end is connected, negative pole is connected after resistance R15 with the N pole of diode D9；Described amplifier P1
Positive pole be also connected with the N pole of diode D3, its minus earth；The outfan of described amplifier P1 is also with audion VT3's
Emitter stage is connected；The junction point of described inductance L1 and resistance R13 is also connected with the P pole of Zener diode D5.
Sampling maintenance wireless signal processing system based on Internet of Things the most according to claim 4, it is characterised in that: institute
State signal level regulation circuit by field effect transistor MOS, amplifier P2, audion VT5, the drain electrode phase of positive pole and field effect transistor MOS
Connect, polar capacitor C13, P pole that negative pole colelctor electrode with audion VT5 after resistance R22 is connected is with polar capacitor C13's
Negative pole be connected after the diode D7 that is connected with the negative pole of amplifier P2 of ground connection, N pole, the colelctor electrode of one end and audion VT5
Be connected, adjustable resistance R23 that the other end is connected with the negative pole of amplifier P2, positive pole after resistance R24 with amplifier P2's
Negative pole is connected, negative pole outfan with amplifier P2 after resistance R25 is connected polar capacitor C14, P pole and amplifier P2
Negative pole be connected after the diode D8 that is connected of ground connection, N pole negative pole with polar capacitor C14 after resistance R26, and positive pole
After resistance R20, the grid with field effect transistor MOS is connected, negative pole outfan with amplifier P2 after resistance R221 is connected
Polar capacitor C12 composition；The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C11；Described audion
The base stage of VT5 is connected with the OUT pin processing chip U, its emitter stage is connected with the positive pole of amplifier P2；Described polarity electricity
The positive pole holding C12 is also connected with the G pin processing chip U；The outfan of described amplifier P2 is as signal level regulation electricity
The outfan on road.
Sampling maintenance wireless signal processing system based on Internet of Things the most according to claim 5, it is characterised in that: institute
Stating process chip U is the integrated chip of MB40897.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610683295.6A CN106301414A (en) | 2016-08-17 | 2016-08-17 | Sampling maintenance wireless signal processing system based on Internet of Things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610683295.6A CN106301414A (en) | 2016-08-17 | 2016-08-17 | Sampling maintenance wireless signal processing system based on Internet of Things |
Publications (1)
| Publication Number | Publication Date |
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| CN106301414A true CN106301414A (en) | 2017-01-04 |
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ID=57678703
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610683295.6A Withdrawn CN106301414A (en) | 2016-08-17 | 2016-08-17 | Sampling maintenance wireless signal processing system based on Internet of Things |
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| Country | Link |
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| CN (1) | CN106301414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296275A (en) * | 2021-06-01 | 2021-08-24 | 佳木斯大学 | Medical image observation lamp box for image department |
-
2016
- 2016-08-17 CN CN201610683295.6A patent/CN106301414A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296275A (en) * | 2021-06-01 | 2021-08-24 | 佳木斯大学 | Medical image observation lamp box for image department |
| CN113296275B (en) * | 2021-06-01 | 2022-08-16 | 佳木斯大学 | Medical image observation lamp box for image department |
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Application publication date: 20170104 |