CN106323482A - Signal level adjusting type processing system used for flue gas temperature alarm device - Google Patents
Signal level adjusting type processing system used for flue gas temperature alarm device Download PDFInfo
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- CN106323482A CN106323482A CN201610738714.1A CN201610738714A CN106323482A CN 106323482 A CN106323482 A CN 106323482A CN 201610738714 A CN201610738714 A CN 201610738714A CN 106323482 A CN106323482 A CN 106323482A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
Abstract
The invention discloses a signal level adjusting type processing system used for a flue gas temperature alarm device. The signal level adjusting type processing system is mainly composed of a processing chip U, a triode VT2, a polar capacitor C7, resistor R8, diode D3, a signal receiving low-pass filter circuit, a frequency bandwidth adjusting circuit which is connected in series between the COM pin and the FDBK pin of the processing chip U, a frequency error correction circuit which is connected with the processing chip U, and a resistance-capacitance coupling amplification circuit which is connected in series between the frequency error correction circuit and the VNEG pin of the processing chip U. The useless signals of signals can be suppressed or eliminated, and the phase and frequency error of the output signals can be adjusted and the output signals are maintained to be stable so that the accuracy of signal processing can be enhanced, and the alarm accuracy of the temperature alarm device in case of excessively high temperature of flue gas of a carbon roasting furnace can be ensured.
Description
Technical field
The present invention relates to a kind of signal processing system, specifically refer to a kind of flue-gas temperature alarm device signal level and adjust
Type processing system.
Background technology
Carbon baking furnace generally uses petroleum coke and Colophonium to do raw material, and at high operating temperatures, calcination department completes vibration
The raw baking carbon blocks of molding becomes qualified ripe carbon block.Raw carbon block temperature in roasting process is 200-1200 DEG C, and this process discharges
Substantial amounts of baking flue gas, baking furnace fume main component is glance coal, tar and various combustible dust, and flue gas exit temperature is up to
900℃.At high temperature, these flue gases must discharge flue, the easiest overheated burning in time, even sets off an explosion.Work at present
Factory, in order to prevent the temperature in flue too high and accidents caused, is just mounted with temperature alarming device in factory.Institute of factory now
The temperature alarming device of employing is many to be made up of temperature sensor, signal processing system, controller, display and alarm, this
Can report to the police accurately when temperature alarming device temperature in flue is too high, depend primarily on signal processing system energy
No signal is effectively processed.
But, the signal processing system of existing carbon baking furnace flue-gas temperature alarm device is to the treatment effect of signal not
Good, cause temperature alarming device can not report to the police timely when flue-gas temperature superelevation, cause the staff can not be timely
High-temperature flue gas is discharged flue, so that staff can not discharge dangerous situation timely.
Therefore it provides a kind of carbon baking furnace flue-gas temperature alarm device signal processing that can improve signal processing effect
System is the task of top priority.
Summary of the invention
It is an object of the invention to overcome the signal processing system pair of existing carbon baking furnace flue-gas temperature alarm device
The defect that the treatment effect of signal is the best, it is provided that a kind of flue-gas temperature alarm device signal level adjusting type processing system.
To achieve these goals, the scheme that the present invention uses is as follows: a kind of flue-gas temperature alarm device signal level
Adjusting type processing system, mainly by processing chip U, audion VT2, positive pole is connected with the base stage of audion VT2, negative pole is through electricity
The polar capacitor C7 being connected with the GNEG pin processing chip U after sense L2, one end is connected with the VINP pin processing chip U
Connect, resistance R9 that the other end is connected with the base stage of audion VT2, one end is connected with the colelctor electrode of audion VT2, the other end
Resistance R8, the N pole of ground connection and two poles that COM pin is connected, P pole is connected with the emitter stage of audion VT2 processing chip U
Pipe D3, the frequency bandwidth being serially connected between the COM pin and the FDBK pin that process chip U adjusts circuit, respectively with audion VT2
Base stage receive low-pass filter circuit with the signal that is connected of VC pin processing chip U, and process the frequency that chip U is connected
Error correction circuit, and be serially connected in correction of frequency errors circuit and process chip U VNEG pin between resistance-capacitance coupling put
Big circuit composition；The VC pin of described process chip U is connected with outside 12V DC source.
Described frequency bandwidth adjust electricity routing amplifier P3, amplifier P4, audion VT6, positive pole after resistance R27 with put
The polar capacitor C19 that positive pole is connected, negative pole is connected with the COM pin of process chip U of big device P3, positive pole is through resistance R29
Be connected with rear and polar capacitor C19 positive pole afterwards, polar capacitor C20, the P pole of minus earth is connected with the positive pole of amplifier P3
Connect, diode D10 that N pole emitter stage with audion VT6 after resistance R25 is connected, the base stage phase of positive pole and audion VT6
Connect, polar capacitor C18, the N pole that is connected with the outfan of amplifier P3 of negative pole after resistance R26 with the collection of audion VT6
The diode D11 that electrode is connected, P pole outfan with amplifier P3 after resistance R28 is connected, positive pole is after resistance R31
Be connected with the negative pole of amplifier P4, polar capacitor C22, the P pole of minus earth is connected with the positive pole of polar capacitor C22, N pole
The diode D13 being connected with the negative pole of polar capacitor C22, positive pole is connected with the outfan of amplifier P4, negative pole is through resistance
The polar capacitor C21 that after R33, positive pole with amplifier P4 is connected, one end is connected with the outfan of amplifier P4, the other end
The adjustable resistance R32 of ground connection, and P pole negative pole with amplifier P3 after resistance R30 is connected, N pole is with adjustable resistance R32's
The diode D12 composition that adjustable side is connected；The P pole of described diode D11 also positive pole with polar capacitor C22 is connected；Institute
The outfan stating amplifier P4 is connected with the FDBK pin processing chip U.
Described Resistance and Capacitance Coupled Amplification Circuit by audion VT4, audion VT5, P pole is connected with the base stage of audion VT4,
The diode D8 that N pole is connected with the VNEG pin processing chip U, one end is connected with the N pole of diode D8, other end ground connection
Resistance R22, positive pole colelctor electrode with audion VT4 after resistance R19 is connected, negative pole after resistance R18 with audion VT4
Polar capacitor C13, the P pole that is connected of base stage be connected with the positive pole of polar capacitor C13, N pole after resistance R17 with audion
The diode D7 that the colelctor electrode of VT5 is connected, positive pole is connected with the colelctor electrode of audion VT4, negative pole after inductance L4 with three
The polar capacitor C16 that the base stage of pole pipe VT5 is connected, positive pole negative pole with polar capacitor C16 after resistance R20 is connected, negative
The polar capacitor C14 that pole is connected with the colelctor electrode of audion VT5, positive pole is connected with the colelctor electrode of audion VT5, negative pole with
Polar capacitor C15, the N pole that correction of frequency errors circuit is connected negative pole with polar capacitor C15 after resistance R21 is connected, P
The diode D9 that pole is connected with the emitter stage of audion VT5, negative with polar capacitor C16 after plus earth adjustable resistance R24
The polar capacitor C17 of ground connection after pole is connected, negative pole is connected with the emitter stage of audion VT5, and one end and audion VT4
Emitter stage be connected, the resistance R23 of other end ground connection composition；The minus earth of described polar capacitor C13.
Further, described signal reception low-pass filter circuit is by amplifier P1, audion VT1, and positive pole is after resistance R3
Be connected with the positive pole of amplifier P1, negative pole receives the polar capacitor C3 of input of low-pass filter circuit as signal, positive pole
After resistance R4 the negative pole with polar capacitor C3 be connected, the positive pole phase of polar capacitor C5, the N pole of minus earth and amplifier P1
Connect, diode D1 that P pole is sequentially connected through inductance L1 outfan with amplifier P1 after resistance R2, negative pole and diode
The N pole of D1 be connected after the polar capacitor C1 that is connected of ground connection, positive pole base stage with audion VT1 after resistance R1, positive pole with
The emitter stage of audion VT1 is connected, the polar capacitor C2 of minus earth, and negative pole is connected with the negative pole of amplifier P1, positive pole
The polar capacitor C6 being sequentially connected through resistance R6 outfan with amplifier P1 after resistance R5, positive pole is defeated with amplifier P1's
Go out end be connected, polar capacitor C4 that negative pole is connected with the base stage of audion VT2, and after P electrode resistance R7 with amplifier P1
The diode D2 that negative pole is connected, N pole is connected with the junction point of resistance R6 and resistance R5 composition；Described audion VT1's
Emitter stage is also connected with the VC pin processing chip U, its colelctor electrode is connected with the junction point of inductance L1 with resistance R2.
Described correction of frequency errors electricity routing amplifier P2, field effect transistor MOS, audion VT3, N pole is with amplifier P2's
The diode D5 that positive pole is connected, P pole is connected with the negative pole of polar capacitor C15, positive pole after resistance R13 with process chip U
Polar capacitor C12, the N pole that FDBK is connected, negative pole negative pole with amplifier P2 after resistance R14 is connected through resistance R15
The diode D6 that base stage with audion VT3 is connected afterwards, P pole is connected with the negative pole of amplifier P2, one end and audion VT3
Colelctor electrode be connected, the resistance R16 of other end ground connection, positive pole is connected with the outfan of amplifier P2, negative pole and audion
The polar capacitor C11 that the emitter stage of VT3 is connected, positive pole is connected with the VOUT pin processing chip U, negative pole and field effect transistor
Polar capacitor C9, the P pole that the grid of MOS is connected sequentially after resistance R11 and inductance L3 with process chip U VPOS pin phase
The diode D4 that connection, N pole are connected with the negative pole of polar capacitor C11, positive pole is connected with the P pole of diode D4, negative pole warp
The polar capacitor C10 that after adjustable resistance R12, negative pole with polar capacitor C11 is connected, and the leakage of negative pole and field effect transistor MOS
The polar capacitor C8 composition that pole is connected, positive pole is connected with the N pole of diode D4 after resistance R10；Described field effect transistor MOS
Drain electrode also junction point with resistance R11 with inductance L3 be connected, its source electrode is connected with the positive pole of amplifier P2；Described amplification
The negative pole of device P2 also with process chip U GND pin be connected after ground connection；The negative pole of described polar capacitor C11 is as frequency by mistake
The outfan of difference correcting circuit.
In order to ensure the practical effect of the present invention, described process chip U the most preferentially have employed the integrated chip of AD603
Realize.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention is not only simple in structure with low cost, and can process signal accurately, makes carbon baking furnace
Temperature alarming device can be reported to the police immediately when flue-gas temperature superelevation, i.e. ensure that staff may process dangerous situation timely, because of
This can prevent flue gas overheated and burns and cause fire, the danger of blast even occurs, it is ensured that the production of carbon baking furnace
Safety.
(2) garbage signal in signal can be suppressed or eliminate by the present invention, and the present invention can also be to output signal
Phase and frequency error be adjusted, make output signal keep stable, thus improve accurate to signal processing of the present invention
Property, it is ensured that temperature alarming device is at the accuracy of the too high alarm of carbon baking furnace flue-gas temperature.
(3) frequency bandwidth of input signal can be adjusted by the present invention, and the collective frequency making signal is more steady, makes letter
Number frequency keep resting state, effectively ensure that process chip U to input process time signal integrity and
Reliability.
(4) present invention can carry out multistage amplification to the signal of output, can be by the signal level of output signal and signal frequency
It is adjusted to the level with input signal and signal frequency is consistent, make the intensity of signal be maintained at more than 1mV, thus improve this
The bright accuracy to signal processing.
(5) present invention effectively raises the accuracy to signal processing, makes temperature alarming device at carbon baking furnace cigarette
Can carry out warning promptly and accurately when temperature is too high, the high-temperature flue gas of carbon baking furnace can be discharged timely, can be effective
Decrease carbon baking furnace to work under superhigh temperature state, thus the present invention can effectively extend the use longevity of carbon baking furnace
Life.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the Resistance and Capacitance Coupled Amplification Circuit of the present invention.
Fig. 3 is the electrical block diagram of the frequency bandwidth adjustment 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 VT2, resistance R8, resistance R9, polar capacitor C7, two
Pole pipe D3, inductance L2, frequency bandwidth adjusts circuit, Resistance and Capacitance Coupled Amplification Circuit, and signal receives low-pass filter circuit, and frequency
Error correction circuit forms.
During connection, the positive pole of polar capacitor C7 is connected with the base stage of audion VT2, negative pole after inductance L2 with process core
The GNEG pin of sheet U is connected.One end of resistance R9 is connected with the VINP pin processing chip U, the other end and audion VT2
Base stage be connected.One end of resistance R8 is connected with the colelctor electrode of audion VT2, other end ground connection.The N pole of diode D3 with
The COM pin processing chip U is connected, and P pole is connected with the emitter stage of audion VT2.Frequency bandwidth adjusts circuit and is serially connected in
Process between COM pin and the FDBK pin of chip U.Signal receive low-pass filter circuit respectively with the base stage of audion VT2 and
The VC pin processing chip U is connected.Correction of frequency errors circuit is connected with processing chip U.Resistance and Capacitance Coupled Amplification Circuit string
It is connected between correction of frequency errors circuit and the VNEG pin processing chip U.The VC pin of described process chip U and outside 12V
DC source is connected.
During enforcement, the audion VT2 of the present invention, inductance L2, polar capacitor C7, resistance R8, resistance R9 and diode D3 shape
The demagnetizer become, this demagnetizer can effectively eliminate or suppress Electromagnetic Interference signal in signal, make signal more steady, it is ensured that
Process chip U can receive signal accurately, thus improves the present invention accuracy to signal processing.Meanwhile, described letter
The input of number wave reception filtering circuit then output stage with the temperature sensor of temperature alarming device is connected, and this signal receives filter
Wave circuit is analyzed processing for the temperature signal being transmitted temperature sensor.Described correction of frequency errors circuit defeated
Going out end to be then connected with the controller of temperature alarming device, this controller is then that the signal transmitted according to signal processing system comes
Alarm is controlled.In order to ensure the practical effect of the present invention, described process chip U the most preferentially have employed
The integrated chip of AD603 realizes.
Further, described signal receive low-pass filter circuit by amplifier P1, audion VT1, resistance R1, resistance R2,
Resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor
C4, polar capacitor C5, polar capacitor C6, diode D1, diode D2, and inductance L1 form.
During connection, the positive pole of polar capacitor C3 positive pole with amplifier P1 after resistance R3 is connected, and negative pole is as signal
Receive the input of low-pass filter circuit and be connected with the output stage of temperature sensor.The positive pole of polar capacitor C5 is through resistance R4
Negative pole with polar capacitor C3 is connected afterwards, minus earth.The N pole of diode D1 is connected with the positive pole of amplifier P1, and P is the most suitable
Secondary it is connected through inductance L1 outfan with amplifier P1 after resistance R2.
Wherein, the negative pole of polar capacitor C1 be connected with the N pole of diode D1 after ground connection, positive pole after resistance R1 with three poles
The base stage of pipe VT1 is connected.The positive pole of polar capacitor C2 is connected with the emitter stage of audion VT1, minus earth.Polar capacitor
The negative pole of C6 is connected with the negative pole of amplifier P1, positive pole sequentially after resistance R6 and resistance R5 with the outfan phase of amplifier P1
Connect.
Meanwhile, the positive pole of polar capacitor C4 is connected with the outfan of amplifier P1, the base stage phase of negative pole and audion VT2
Connect.After P electrode resistance R7 of diode D2, the negative pole with amplifier P1 is connected, N pole and resistance R6 and the junction point of resistance R5
It is connected.The emitter stage of described audion VT1 is also connected with the VC pin processing chip U, its colelctor electrode and inductance L1 and electricity
The junction point of resistance R2 is connected.Polar capacitor C1, polar capacitor C3 and polar capacitor C5 in this circuit as filter capacitor, and
Polar capacitor C3 and polar capacitor C5 forms the first filter；And amplifier P1, diode D1, inductance L1, polar capacitor C6 and
The amplifier that diode D2 is formed.
Further, described correction of frequency errors electricity routing amplifier P2, field effect transistor MOS, audion VT3, resistance
R10, resistance R11, adjustable resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, polar capacitor C8, polar capacitor
C9, polar capacitor C10, polar capacitor C11, polar capacitor C12, diode D4, diode D5, diode D6. and inductance L3
Composition.
During connection, the N pole of diode D5 is connected with the positive pole of amplifier P2, and P pole is connected with the negative pole of polar capacitor C15
Connect.The positive pole of polar capacitor C12 after resistance R13 with process chip U FDBK be connected, negative pole after resistance R14 with amplification
The negative pole of device P2 is connected.The N pole of diode D6 base stage with audion VT3 after resistance R15 is connected, P pole and amplifier
The negative pole of P2 is connected.
Wherein, one end of resistance R16 is connected with the colelctor electrode of audion VT3, other end ground connection.Polar capacitor C11's
Positive pole is connected with the outfan of amplifier P2, and negative pole is connected with the emitter stage of audion VT3.The positive pole of polar capacitor C9 with
The VOUT pin processing chip U is connected, and negative pole is connected with the grid of field effect transistor MOS.The P pole of diode D4 is sequentially through electricity
Being connected with the VPOS pin processing chip U after resistance R11 and inductance L3, N pole is connected with the negative pole of polar capacitor C11.
Meanwhile, the positive pole of polar capacitor C10 is connected with the P pole of diode D4, negative pole after adjustable resistance R12 with polarity
The negative pole of electric capacity C11 is connected.The negative pole of polar capacitor C8 is connected with the drain electrode of field effect transistor MOS, and positive pole is after resistance R10
It is connected with the N pole of diode D4.
The drain electrode of described field effect transistor MOS also junction point with resistance R11 with inductance L3 is connected, its source electrode and amplifier
The positive pole of P2 is connected；The negative pole of described amplifier P2 also with process chip U GND pin be connected after ground connection；Described polarity
The negative pole of electric capacity C11 as correction of frequency errors circuit outfan and with the controller signals input phase of temperature alarming device
Connect.And amplifier P2, field effect transistor MOS, adjustable resistance R12 and the polar capacitor C11 in this circuit defines actuator, should
Actuator is for being modified the phase and frequency of signal.
As in figure 2 it is shown, described Resistance and Capacitance Coupled Amplification Circuit is by audion VT4, audion VT5, resistance R17, resistance R18,
Resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, polar capacitor C13, polar capacitor C14, polarity
Electric capacity C15, polar capacitor C16, polar capacitor C17, inductance L4, diode D7, diode D8, and diode D9 form.
During connection, the P pole of diode D8 is connected with the base stage of audion VT4, N pole and the VNEG pin processing chip U
It is connected.One end of resistance R22 is connected with the N pole of diode D8, other end ground connection.The positive pole of polar capacitor C13 is through resistance
After R19, the colelctor electrode with audion VT4 is connected, and negative pole base stage with audion VT4 after resistance R18 is connected.
Wherein, the P pole of diode D7 is connected with the positive pole of polar capacitor C13, N pole after resistance R17 with audion VT5
Colelctor electrode be connected.The positive pole of polar capacitor C16 is connected with the colelctor electrode of audion VT4, negative pole after inductance L4 with three
The base stage of pole pipe VT5 is connected.The positive pole of polar capacitor C14 negative pole with polar capacitor C16 after resistance R20 is connected, negative
Pole is connected with the colelctor electrode of audion VT5.The positive pole of polar capacitor C15 is connected with the colelctor electrode of audion VT5, negative pole with
Correction of frequency errors circuit is connected.
Meanwhile, the N pole of diode D9 negative pole with polar capacitor C15 after resistance R21 is connected, P pole and audion VT5
Emitter stage be connected.It is connected with the negative pole of polar capacitor C16 after the plus earth adjustable resistance R24 of polar capacitor C17, negative
Pole be connected with the emitter stage of audion VT5 after ground connection.One end of resistance R23 is connected with the emitter stage of audion VT4, another
End ground connection.The minus earth of described polar capacitor C13.
As it is shown on figure 3, described frequency bandwidth adjusts electricity routing amplifier P3, amplifier P4, audion VT6, resistance R25,
Resistance R26, resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, adjustable resistance R32, resistance R33, polar capacitor
C18, polar capacitor C19, polar capacitor C20, polar capacitor C21, polar capacitor C22, diode D10, diode D11, two poles
Pipe D12, and diode D13 composition.
During connection, the positive pole of polar capacitor C19 positive pole with amplifier P3 after resistance R27 is connected, negative pole and process
The COM pin of chip U is connected.The positive pole of polar capacitor C20 after resistance R29 with after be connected with the positive pole of polar capacitor C19
Connect, minus earth.The P pole of diode D10 is connected with the positive pole of amplifier P3, N pole after resistance R25 with audion VT6's
Emitter stage is connected.
Wherein, the positive pole of polar capacitor C18 is connected with the base stage of audion VT6, negative pole and the outfan of amplifier P3
It is connected.The N pole of diode D11 colelctor electrode with audion VT6 after resistance R26 is connected, P pole after resistance R28 with put
The outfan of big device P3 is connected.The positive pole of polar capacitor C22 negative pole with amplifier P4 after resistance R31 is connected, negative pole
Ground connection.The P pole of diode D13 is connected with the positive pole of polar capacitor C22, and N pole is connected with the negative pole of polar capacitor C22.
Meanwhile, the positive pole of polar capacitor C21 is connected with the outfan of amplifier P4, negative pole after resistance R33 with amplification
The positive pole of device P4 is connected.One end of adjustable resistance R32 is connected with the outfan of amplifier P4, other end ground connection.Diode
The P pole of D12 negative pole with amplifier P3 after resistance R30 is connected, and N pole is connected with the adjustable side of adjustable resistance R32.Described
The P pole of diode D11 also positive pole with polar capacitor C22 is connected；The outfan of described amplifier P4 is with process chip U's
FDBK pin is connected.
During operation, the polar capacitor C1 of the signal wave reception filtering circuit of the present invention, polar capacitor C3 and polar capacitor C5 make
For filter capacitor, and polar capacitor C3 and polar capacitor C5 forms the first filter, and this first filter can effectively will input
The interference signal that signal in end signal is stronger eliminates, through pre-filtered signal then by by amplifier P1, diode
The amplifier that the element such as D1 and polar capacitor C6 is formed carries out signal frequency point and is amplified, and makes the intensity enhancing of signal, and signal
Enhanced signal filters again through the polar capacitor C4 as filter capacitor again, is had by the interference signal in signal
The elimination of effect, makes signal more steadily and be transferred to process chip U after resistance R9 carries out choked flow.Signal is entered by this process chip U
Row analyzing and processing after convert a signal into digital signal, this digital signal finally by correction of frequency errors circuit to digital signal
Phase and frequency error be adjusted, i.e. by amplifier P2, field effect transistor MOS, adjustable resistance R12 and the polarity in circuit
The actuator that electric capacity C11 is formed realizes being adjusted the phase and frequency error in digital signal, makes output signal keep
Stable, thus signal can be processed by the present invention accurately, it is ensured that temperature alarming device is in carbon baking furnace flue-gas temperature
The accuracy of too high alarm.
Wherein, the present invention in order to improve process chip U when input signal is processed, the overall frequency of signal can be made
Keep stable, then between COM pin and the FDBK pin processing chip U, be provided with frequency bandwidth adjust circuit.This frequency band
Wide adjust in circuit amplifier P3, audion VT6, diode D10, diode D11, polar capacitor C18, polar capacitor C19,
The resonator that polar capacitor C20 and diode D12 is formed, this resonator can eliminate radio-frequency component unnecessary in signal, make letter
Number cleaner.And frequency bandwidth adjust the amplifier P4 in circuit, adjustable resistance R32, polar capacitor C21, polar capacitor C22 and
The frequency band adjustments device that diode D13 is formed, the frequency bandwidth of signal can be adjusted, effectively raise by this frequency band adjustments device
The intensity of signal, makes signal more stable, thus this frequency bandwidth adjust circuit effectively ensure that process chip U to input into
The integrity of signal when row processes and reliability, further improve the present invention accuracy to signal processing.
Wherein, be provided with can be to output between correction of frequency errors circuit and the VNEG pin processing chip U for the present invention
Signal carry out multistage amplification, the signal level of output signal and signal frequency can be adjusted to the level with input signal and letter
Number frequency is consistent, makes the intensity of signal be maintained at the Resistance and Capacitance Coupled Amplification Circuit of more than 1mV.Audion VT4 in this circuit, two
Pole pipe D8, polar capacitor C13, resistance R18, resistance R19, resistance R22 and resistance R23 form single order amplifier, this amplifier energy
The low frequency signal of output is amplified, makes low frequency signal identical with the level of reference signal.Meanwhile, electricity is amplified in this resistance-capacitance coupling
Resistance R17 in road, resistance R20, resistance R21, adjustable resistance R24, polar capacitor C14, polar capacitor C15, polar capacitor
The second order amplifier that C16, polar capacitor C17, inductance L4 and diode D9 are formed, this amplifier is to after single order amplifier amplifies
Signal again amplify, make the signal level frequency of output keep consistent with incoming signal level frequency, thus this frequency
Error correction circuit can effectively improve the present invention accuracy to signal processing.
Additionally, the present invention effectively raises the accuracy to signal processing, make temperature alarming device at carbon baking furnace
Can carry out warning promptly and accurately when flue-gas temperature is too high, the high-temperature flue gas of carbon baking furnace can be discharged timely, can be effective
The carbon baking furnace that decreases work under superhigh temperature state, thus the present invention can effectively extend the use longevity of carbon baking furnace
Life.
As it has been described above, just can preferably realize the present invention.
Claims (6)
1. a flue-gas temperature alarm device signal level adjusting type processing system, mainly by processing chip U, audion VT2,
The polarity electricity that positive pole is connected with the base stage of audion VT2, negative pole is connected with the GNEG pin processing chip U after inductance L2
Appearance C7, one end and the resistance R9 that VINP pin is connected, the other end is connected with the base stage of audion VT2 of process chip U, one
End is connected with the colelctor electrode of audion VT2, resistance R8, the N pole of other end ground connection is connected with the COM pin processing chip U,
The diode D3 that P pole is connected with the emitter stage of audion VT2, is serially connected between COM pin and the FDBK pin processing chip U
Frequency bandwidth adjust circuit, respectively with the base stage of audion VT2 and process chip U VC pin be connected signal reception low
Bandpass filter circuit, the correction of frequency errors circuit being connected with process chip U, and it is serially connected in correction of frequency errors circuit and place
Resistance and Capacitance Coupled Amplification Circuit composition between the VNEG pin of reason chip U；The VC pin of described process chip U is straight with outside 12V
Stream power supply is connected.
A kind of flue-gas temperature alarm device signal level adjusting type processing system the most according to claim 1, its feature
Be: described frequency bandwidth adjust electricity routing amplifier P3, amplifier P4, audion VT6, positive pole after resistance R27 with amplification
The polar capacitor C19 that the positive pole of device P3 is connected, negative pole is connected with the COM pin of process chip U, positive pole is after resistance R29
Be connected with rear and polar capacitor C19 positive pole, polar capacitor C20, the P pole of minus earth is connected with the positive pole of amplifier P3
Connect, diode D10 that N pole emitter stage with audion VT6 after resistance R25 is connected, the base stage phase of positive pole and audion VT6
Connect, polar capacitor C18, the N pole that is connected with the outfan of amplifier P3 of negative pole after resistance R26 with the collection of audion VT6
The diode D11 that electrode is connected, P pole outfan with amplifier P3 after resistance R28 is connected, positive pole is after resistance R31
Be connected with the negative pole of amplifier P4, polar capacitor C22, the P pole of minus earth is connected with the positive pole of polar capacitor C22, N pole
The diode D13 being connected with the negative pole of polar capacitor C22, positive pole is connected with the outfan of amplifier P4, negative pole is through resistance
The polar capacitor C21 that after R33, positive pole with amplifier P4 is connected, one end is connected with the outfan of amplifier P4, the other end
The adjustable resistance R32 of ground connection, and P pole negative pole with amplifier P3 after resistance R30 is connected, N pole is with adjustable resistance R32's
The diode D12 composition that adjustable side is connected；The P pole of described diode D11 also positive pole with polar capacitor C22 is connected；Institute
The outfan stating amplifier P4 is connected with the FDBK pin processing chip U.
A kind of flue-gas temperature alarm device signal level adjusting type processing system the most according to claim 2, its feature
It is: described Resistance and Capacitance Coupled Amplification Circuit is by audion VT4, and audion VT5, P pole is connected with the base stage of audion VT4, N pole
With the diode D8 that is connected of VNEG pin processing chip U, one end is connected with the N pole of diode D8, other end ground connection
Resistance R22, positive pole colelctor electrode with audion VT4 after resistance R19 is connected, negative pole after resistance R18 with audion VT4's
Polar capacitor C13, the P pole that base stage is connected is connected with the positive pole of polar capacitor C13, N pole after resistance R17 with audion
The diode D7 that the colelctor electrode of VT5 is connected, positive pole is connected with the colelctor electrode of audion VT4, negative pole after inductance L4 with three
The polar capacitor C16 that the base stage of pole pipe VT5 is connected, positive pole negative pole with polar capacitor C16 after resistance R20 is connected, negative
The polar capacitor C14 that pole is connected with the colelctor electrode of audion VT5, positive pole is connected with the colelctor electrode of audion VT5, negative pole with
Polar capacitor C15, the N pole that correction of frequency errors circuit is connected negative pole with polar capacitor C15 after resistance R21 is connected, P
The diode D9 that pole is connected with the emitter stage of audion VT5, negative with polar capacitor C16 after plus earth adjustable resistance R24
The polar capacitor C17 of ground connection after pole is connected, negative pole is connected with the emitter stage of audion VT5, and one end and audion VT4
Emitter stage be connected, the resistance R23 of other end ground connection composition；The minus earth of described polar capacitor C13.
A kind of flue-gas temperature alarm device signal level adjusting type processing system the most according to claim 3, its feature
Be: described signal receives low-pass filter circuit by amplifier P1, audion VT1, positive pole after resistance R3 with amplifier P1's
Positive pole is connected, negative pole receives the polar capacitor C3 of input of low-pass filter circuit as signal, positive pole after resistance R4 with
The negative pole of polar capacitor C3 is connected, polar capacitor C5, the N pole of minus earth is connected with the positive pole of amplifier P1, P pole sequentially
Through the diode D1 that inductance L1 outfan with amplifier P1 after resistance R2 is connected, negative pole is extremely connected with the N of diode D1
Meeting the polar capacitor C1 that rear ground connection, the positive pole base stage with audion VT1 after resistance R1 is connected, positive pole is with audion VT1's
Emitter stage is connected, the polar capacitor C2 of minus earth, and negative pole is connected with the negative pole of amplifier P1, positive pole is sequentially through resistance R6
The polar capacitor C6 being connected with outfan with amplifier P1 after resistance R5, positive pole is connected with the outfan of amplifier P1,
The polar capacitor C4 that negative pole is connected with the base stage of audion VT2, and after P electrode resistance R7, negative pole with amplifier P1 is connected
Connect, diode D2 that N pole is connected with the junction point of resistance R6 and resistance R5 composition；The emitter stage of described audion VT1 also with
The VC pin of process chip U is connected, its colelctor electrode is connected with the junction point of inductance L1 with resistance R2.
A kind of flue-gas temperature alarm device signal level adjusting type processing system the most according to claim 4, its feature
It is: described correction of frequency errors electricity routing amplifier P2, field effect transistor MOS, audion VT3, N pole and the positive pole of amplifier P2
Be connected, diode D5 that P pole is connected with the negative pole of polar capacitor C15, positive pole after resistance R13 with process chip U's
Polar capacitor C12, the N pole that FDBK is connected, negative pole negative pole with amplifier P2 after resistance R14 is connected is after resistance R15
Be connected with the base stage of audion VT3, diode D6 that P pole is connected with the negative pole of amplifier P2, one end is with audion VT3's
Colelctor electrode is connected, the resistance R16 of other end ground connection, and positive pole is connected with the outfan of amplifier P2, negative pole and audion VT3
The polar capacitor C11 that is connected of emitter stage, positive pole is connected with the VOUT pin processing chip U, negative pole and field effect transistor MOS
Polar capacitor C9, the P pole that is connected of grid be sequentially connected with the VPOS pin processing chip U after inductance L3 through resistance R11
Connect, diode D4 that N pole is connected with the negative pole of polar capacitor C11, positive pole is connected with the P pole of diode D4, negative pole is through can
Adjust the polar capacitor C10 being connected after resistance R12 with the negative pole of polar capacitor C11, and the drain electrode of negative pole and field effect transistor MOS
Be connected, polar capacitor C8 that positive pole is connected with the N pole of diode D4 after resistance R10 composition；Described field effect transistor MOS
Drain electrode also junction point with resistance R11 with inductance L3 is connected, its source electrode is connected with the positive pole of amplifier P2；Described amplifier
The negative pole of P2 also with process chip U GND pin be connected after ground connection；The negative pole of described polar capacitor C11 is as frequency error
The outfan of correcting circuit.
A kind of flue-gas temperature alarm device signal level adjusting type processing system the most according to claim 5, its feature
It is: described process chip U is the integrated chip of AD603.
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| CN201610738714.1A CN106323482A (en) | 2016-08-27 | 2016-08-27 | Signal level adjusting type processing system used for flue gas temperature alarm device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2369437A (en) * | 2000-11-28 | 2002-05-29 | Graviner Ltd Kidde | An LED based temperature sensor |
| CN104967408A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Band-pass filtering oscillation system based on step-down type constant current circuit |
| CN104967947A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Low-pass filtering amplification audio processing system based on step-down constant current circuit |
| CN105258524A (en) * | 2015-11-09 | 2016-01-20 | 四川华索自动化信息工程有限公司 | Low-pass filtering voltage-stabilization resonance constant-current shaping type temperature alarm system for carbon roasting furnace |
| CN105300124A (en) * | 2015-11-09 | 2016-02-03 | 四川华索自动化信息工程有限公司 | Lowpass filtering type temperature alarm system for carbon roasting furnace |
-
2016
- 2016-08-27 CN CN201610738714.1A patent/CN106323482A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2369437A (en) * | 2000-11-28 | 2002-05-29 | Graviner Ltd Kidde | An LED based temperature sensor |
| CN104967408A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Band-pass filtering oscillation system based on step-down type constant current circuit |
| CN104967947A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Low-pass filtering amplification audio processing system based on step-down constant current circuit |
| CN105258524A (en) * | 2015-11-09 | 2016-01-20 | 四川华索自动化信息工程有限公司 | Low-pass filtering voltage-stabilization resonance constant-current shaping type temperature alarm system for carbon roasting furnace |
| CN105300124A (en) * | 2015-11-09 | 2016-02-03 | 四川华索自动化信息工程有限公司 | Lowpass filtering type temperature alarm system for carbon roasting furnace |
Non-Patent Citations (1)
| Title |
|---|
| 高云红等: "《智能仪器技术及工程实例设计》", 31 August 2015, 北京航空航天大学出版社 * |
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Application publication date: 20170111 |