CN203216546U - Consumption regulator - Google Patents
Consumption regulator Download PDFInfo
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- CN203216546U CN203216546U CN 201320074328 CN201320074328U CN203216546U CN 203216546 U CN203216546 U CN 203216546U CN 201320074328 CN201320074328 CN 201320074328 CN 201320074328 U CN201320074328 U CN 201320074328U CN 203216546 U CN203216546 U CN 203216546U
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- conditioner
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Abstract
The utility model provides a consumption regulator which comprises an excitation signal generating circuit, a detection circuit, a modulation-demodulation circuit and a pulse signal generating circuit, wherein the excitation signal generating circuit, the detection circuit, the modulation-demodulation circuit and the pulse signal generating circuit are integrated in a module by a thick mold. In the excitation signal generating circuit, the control end of an RC bridge type sine wave oscillating circuit in series connection with a power amplification circuit is provided with a switch K4 and a capacitor C15, two alternating-current excitation signals generated by the RC bridge type sine save oscillating circuit through the power amplification circuit excite a consumption sensor through a positive-phase voltage following circuit and a negative-phase voltage following circuit respectively to enable the consumption sensor to form a modulation carrier signal in a rotation process, and the modulation carrier signal is sent in the pulse signal generating circuit after being filtered, detected, amplified and compared by the modulation-demodulation circuit to generate a pulse signal for a microprocessor to identify. The consumption regulator is small in volume, low in power consumption and high in reliability, overcomes the defect that a printed circuit board (PCB) occupies a plenty of assembly space in the prior art, and can detect fault messages of the consumption sensor on the plane.
Description
Technical field
The utility model relates to a kind of consumption conditioner or title consumption signal conversion module that is mainly used in aircraft, automobile, the measurement of ship engine fuel consumption, fuel consumption measurement, instantaneous delivery measurement.
Background technology
The fuel system electrical control comprises fuel quantity meas urement system, consumption system.Aircraft fuel oil consumption system mainly comprises consumption sensor and consumption meter.The consumption sensor drives gauge outfit for the pulse signal that fuel flow is converted to certain frequency, and consumption meter then is used to refer to the total Fuel Oil Remaining of aircraft, thereby determines the fuel consumption of aircraft.The quality of consumption system works directly influences pilot's manipulation judgement and flight safety, its performance need regularly detects, fuel quantity consumption measurement system is one of important mobile system, is the important system of aircraft being carried out fuel oil interpolation control, transmission control, fuel oil storage level calculating demonstration.Consumption measurement is the most typical characteristics of Soviet Union's formula series aircraft fuel system, and its principle is to utilize turbine type consumption sensor to experience the fuel consumption of fuel oil.CTP7-ZAK fuel gage-consumption meter system is that Russia produces the engine fuel TT﹠C system of equipping on Soviet Union's one 27 aircrafts.It has the condenser type oil measurement that consumes fuel tank and all fuel tanks be converted to two kinds of metering systems of total oil measurement with consumption measurement.Measurement by capacitance has adopted typical alternating current bridge, and the belt pointer indication oil mass to move up and down.Consumption measurement adopts flow sensor, secondary reshaper is with the defeated next rect.p. of amplification shaping device, another input end that is the forward position oil circuit is shaped to short pulse by self-actuated controller defeated next " presetting permission ", and these pulses are defeated by two and are calculated the fuel consumption circuit.Aircraft consumption meter system is made up of density sensor, instantaneous consumption sensor, density transform combination, signal conversion combination and indicator.Principle is that when fuel oil is flowed through the consumption sensor sensor is experienced fuel density signal and volumetric flow rate signal and process signal converter and is converted into mass rate, indicates consumption through indicator again.The equipment under test design time early belongs to machine-electric analogy formula TT﹠C system, nearly 104 of Account Dept's numbers of packages, and the interconnection of signals relation is complicated, and the realization that its digitizing detects is difficulty relatively, and does not have the function that detects the consumption sensor fault.
At present, domestic aircraft fuel oil consumption measurement, generally adopt the influence that very easily is subjected to aircraft environment, the dump separator spare circuit of anti-interference difference is formed, the pumping signal that this consumption measurement circuit adopts usually is generally 115V, the active oscillating device of 400HZ AC signal, secondly, the consumption circuit that discrete device is formed also needs to make special-purpose pcb board, and pcb board will occupy a large amount of assembly space of product.Existing consumption circuit is very strict to the requirement of cable on the machine, is subject to aircraft cable length, effects of distribution parameters, and when cable length was greater than 20m on the machine, the consumption measurement error was big.
Summary of the invention
It is poor, bulky that the purpose of this utility model is at existing consumption measurement circuit anti-interference, the cost height, and the defective of no calibration function provides a kind of volume little, low in energy consumption, the consumption conditioner that compatibility is strong, reliability is high, versatility good and cost is low.
Above-mentioned purpose of the present utility model can reach by following measure, a kind of consumption conditioner, comprise that being integrated in a pumping signal in the module by thick mould produces circuit, testing circuit, modulation-demodulation circuit and pulse signal generating circuit, it is characterized in that, produce in the circuit in pumping signal, control end is provided with the RC bridge-type sine wave oscillation circuit of K switch 4 and capacitor C 15, the series connection power amplification circuit, two ac-excited signals that RC bridge-type sine wave oscillation circuit produces by power amplification circuit, just passing through respectively, negative voltage follower circuit excitation consumption sensor two ends, make the consumption sensor in rotation process, form a modulated carrier signal, this modulated carrier signal is through above-mentioned modulation-demodulation circuit filtering, detection, amplify, relatively, send into pulse signal generating circuit, generate one for the pulse signal of microprocessor identification.
The utility model has following beneficial effect than existing consumption measurement circuit:
1. volume is little, in light weight.Only 30mm * 20mm * 5mm only weighs about 20g.The utility model is set with modularized circuit structure, software parameter and pumping signal is produced circuit, testing circuit, modulation-demodulation circuit, pulse signal generating circuit thick film is integrated in the module, the consumption signal is converted into electric signal, conditioning has avoided the prior art pcb board to occupy the defective of a large amount of assembly spaces for changing the conditioning voltage pulse signal for the signal that microprocessor is gathered then.
2. has the in situ detection function.In situ detection does not namely need external checkout equipment or adds to detect command signal and just can carry out self check to the failure message of the cable of having installed, consumption sensor, this module.The utility model passes through to detect consumption sensor on mouthful detection aircraft, reaches the failure condition of consumption sensor line, can detect the failure message of consumption sensor on the aircraft, can carry out self check to the failure message of cable, consumption sensor and this module of having installed.Detect mouthful 14 pin ground connection (K3 closure), control 13 pin ground connection (K4 closure) discontinuously, the consumption sensor is under off working state (nonrotationally), and this conditioner can produce unbalanced carrier signal, reaches BIT and detects effect.As not producing uneven carrier signal, then can the judgement machine on consumption sensor line fault.
3. antijamming capability is strong, is not subjected to cable length and effects of distribution parameters on the machine.
Low in energy consumption, compatible strong, reliability is high, versatility good.The utility model adopts the small-signal ac driven circuit to compare 115V signal excitation in the past, greatly reduces the power consumption of product and has improved the electromagnetic compatibility letter of product.This module can be used for the metering circuit of all consumption sensors, and is portable, versatility is good.
5. the utility model increases control end K4 and capacitor C 15 in RC bridge-type sine wave oscillation circuit, can effectively control the output of RC bridge-type sine wave oscillation circuit, thereby improve the measuring ability of this module.
Description of drawings
Fig. 1 is the utility model consumption conditioner circuit theory synoptic diagram.
Fig. 2 is the circuit diagram that Fig. 1 pumping signal produces circuit.
Fig. 3 is that the utility model consumption sensor modulating wave produces circuit diagram.
Fig. 4 is Fig. 1 consumption carrier signal demodulator circuit figure block diagram.
Fig. 5 is the waveform synoptic diagram of the modulating wave of the utility model after the second order high-pass filtering.
Fig. 6 is the waveform synoptic diagram of the utility model after detection, low-pass filtering, amplification.
Fig. 7 is the last square-wave pulse signal that generates of the thick mould integration module of the utility model.
Fig. 8 is the utility model consumption conditioner stitch definition figure.
Table 1 is electrical specification table of the present utility model.
Table 2 is pin definitions of the present utility model.
Embodiment
Consult Fig. 1.In an embodiment described below, consumption conditioner circuit comprises: the pumping signal that is connected with testing circuit produces circuit, modulation-demodulation circuit and pulse signal generating circuit, and above-mentioned pumping signal produces circuit, testing circuit, modulation-demodulation circuit and the thick mould of pulse signal generating circuit and is integrated in the module, wherein, pumping signal produces circuit and comprises: Chuan Lian RC bridge-type sine wave oscillation circuit, power amplification circuit and two-phase voltage follower circuit successively.The two-phase voltage follower circuit comprises and is connected in parallel on positive amplifying circuit and negative amplifying circuit between power amplification circuit and the consumption sensor.Testing circuit is connected in parallel between RC bridge-type sine wave oscillation circuit and the described negative amplifying circuit, by K switch 3.Testing circuit passes through to detect consumption sensor on mouthful detection aircraft, reaches the failure condition of consumption sensor line.Testing circuit mainly detects the fault of circuit on consumption sensor and the machine, and has the in situ detection ability.Modulation-demodulation circuit comprises: successively with consumption sensor, filtering circuit, detecting circuit, amplifying circuit and the comparator circuit of the pulse signal generating circuit of connecting.The consumption sensor is by filtering circuit connect successively detecting circuit, amplifying circuit, comparator circuit and pulse signal generating circuit.The RC bridge-type sine wave oscillation circuit that pumping signal produces in the circuit produces the sine wave that fixed frequency is 4KHZ, behind power amplification circuit amplification and two-phase voltage follower circuit, forming frequency all is 4KHZ, and amplitude is 10V, 13V, 2 ac-excited signals that the phase phasic difference is 180 °.This excitation signals encourages the signal input part (1 pin and 3 pin) of consumption sensor respectively.The consumption sensor just forms a modulated carrier signal at the output terminal of consumption sensor in rotation process, the fundamental frequency of modulated carrier is the frequency (4KHZ) of pumping signal, and the frequency of carrier wave crest is the frequency that sensor rotates.Filtering circuit, detecting circuit, amplifying circuit and the comparator circuit of this modulated carrier signal in modulation-demodulation circuit, after filtering, detection, amplification, the comparison, send into pulse signal generating circuit, generate the pulse square wave signal that frequency is the carrier wave peak frequencies, for microprocessor identification.
Consult Fig. 2.The pumping signal circuit produces electricity and has adopted the passive oscillating circuit of phase differential being done accurate adjustment.Pumping signal produces circuit and comprises: the power amplification circuit that RC bridge-type sine wave oscillation circuit is in series and be connected in parallel on power amplification circuit and the consumption sensor between positive voltage follower circuit and negative voltage follower circuit, wherein, as scheme right-hand, RC bridge-type sine wave oscillation circuit comprises, by being connected on the capacitor C 13 between resistance R 39 and the resistance R 37 and being connected on the RC vibration bridge that the capacitor C 23 of operational amplifier U23C backward end constitutes, this vibration bridge has the frequency-selecting effect, high-frequency signal is absorbed by C23, low frequency signal is absorbed by C13, and can only export the signal of fixed frequency, this fixed frequency f
0=1/2 π RC, R39=R37=R in the formula, C23=C13=C.The resistance R 44, the resistance R 45 that are connected on operational amplifier U23C forward end contact both sides have constituted a voltage-type negative feedback amplifier circuit with direct earth capacitance C15.This voltage-type negative feedback amplifier circuit is the start-oscillation circuit of above-mentioned RC vibration bridge, when the resistance R 44 in the start-oscillation circuit〉during 2R45, the starting of oscillation of RC vibration bridge produces sine-wave oscillation ripple signal, and this signal reaches the output voltage balance by the voltage negative feedback that R44, R45 constitute.Through K switch 4 control ports, control the output of oscillatory circuit simultaneously, output frequency is f during K switch 4 closures
0Sine wave signal, during disconnection, no RC vibration bridge can't starting of oscillation, no-output.By the direct earth capacitance C15 that resistance R 44, resistance R 45 contacts link to each other, the self-sustained oscillation of this start-oscillation circuit when this can eliminate the K4 disconnection.Power amplification circuit is by the triode U13 that is connected in parallel on operational amplifier U23C output terminal both sides, U14 and be connected to triode U13, resistance R 48 on the U14 collector and resistance R 49 are formed, and having formed to provide a kind of complementation of the enough power of pumping signal symmetrical power amplification circuit.Connect the operational amplifier U23D that resistance R 46 links to each other through triode U13 emitter junction, by backward end and output terminal parallel resistance R40, the shunt circuit that resistance R 36 on parallel circuit and resistance R 38 form has constituted a positive amplifying circuit, shunt capacitance C5 on the shunt circuit is used for eliminating the high frequency interference of circuit, form a frequency f=4kHz at circuit, peak value is Vpp=20 ± 2V, and phase place is 0 ° quasi-sine-wave pumping signal.Through operational amplifier U23D forward end, the K switch 3 that links to each other by resistance R 50 is uneven control ends of positive amplifying circuit, and during K switch 3 closures, dutycycle diminishes, and during disconnection, dutycycle is normal.
Connect resistance R 47 continuous operational amplifier U23D by triode U14 emitter junction, by the resistance R 43 that links to each other on backward end and the output terminal shunt circuit, and the resistance R 41 that is electrically connected on the parallel circuit and resistance R 42 have constituted a see-saw circuit, operational amplifier U24B and resistance R 47, R43, form a frequency f=4kHz, peak value is Vpp=25.5 ± 1.5V, and phase place is 180 ° sine wave exciting signal.Shunt capacitance C14 on the shunt circuit is used for eliminating the high frequency interference of circuit.The representative of runic label is exactly the port numbers of this module among this figure.
Consult Fig. 3.The equivalent electrical circuit of consumption sensor is made up of the inductance of 2 series connection, a fixed inductance and a variable inductance.When sensor rotated, variable inductance changed.2 frequencies that pumping signal shown in Figure 2 produces the circuit generation equate that amplitude is 10V, 13V, and 2 sine wave signals that the phase phasic difference is 180 ° encourage 1 pin and 3 pin of consumption sensor respectively, the 2 pin output modulation signal (being commonly called as carrier signal) of consumption sensor.The modulation signal fundamental frequency is the frequency of pumping signal, and the frequency of modulation signal amplitude is the frequency that sensor rotates, and its oscillogram is referring to Fig. 5.
Consult Fig. 4.Demodulator circuit comprises: Chuan Lian filtering circuit, detecting circuit, amplifying circuit successively.Wherein filtering circuit is a second order high-pass filtering circuit, can effectively suppress the DC component of modulation signal; The modulation carrier wave that is produced by sensor enters detecting circuit after the filtering of second order high-pass filtering circuit.Detecting circuit is rectified into one with modulated carrier earlier and has only just half part modulated carrier, then by the low-pass filter in the detecting circuit, the signal worry of 4kHZ in the carrier signal is removed, carrier signal modulates the quasi-sine-wave (DC component is greater than 0) of having only the sensor rotational frequency, amplify through amplifying circuit again, low spot and the high point of quasi-sine-wave signal are amplified respectively, be convenient to the comparison of comparator circuit.
The hysteresis comparator that comparator circuit in the utility model adopts is a kind ofly can effectively consider except undesired signal, can produce amplitude and be the pulse signal of ± 15V, has two voltage comparators of 2 comparison thresholds shown in Figure 6.Pulse signal generating circuit is made up of switch triode, and the pulse signal of pulse signal generating circuit general ± 15V converts to ± 5V, produces the pulse signal for computer acquisition shown in Figure 7.
Consult Fig. 8 and table 2.Boldface type label among Fig. 2 is corresponding with the port numbers in the table 2.This module 1 pin (label 1 among Fig. 2) connects consumption sensor input end 1 (consumption sensor 1 pin) with 2 pin (label 2 among Fig. 2), 3 pin and 4 pin connect consumption sensor input end 2 (consumption sensor 3 pin), 5 pin and 9 pin ground wires, 6 pin are the square wave output of this module.Can directly link to each other with single-chip microcomputer IO mouth.7 pin connect+the 5v power supply.8 pin connect+the 15v power supply, and 10 pin connect-the 15V power supply, and 11 pin are detection port, use mid-sky, are used for measuring the modulation waveform after filtering is amplified.12 pin are the input of modulating wave.Output terminal (consumption sensor 2 pin) 13 pin that connect sensor are output control terminal, directly link to each other with the IO mouth of single-chip microcomputer, and 14 is uneven control end, directly link to each other with the IO mouth of single-chip microcomputer, and the electrical specification of its work sees the following form 1, and pin definitions sees Table 2.
Table 1 electrical characteristics
Table 2 pin definitions
| The end number | Symbol | Function | The end number | Symbol | Function |
| 1 | V 1 | The quasi-sine-wave output terminal | 8 | V CC | +15V |
| 2 | V 2 | Quasi-sine-wave output terminal 1 | 9 | GND | Ground wire |
| 3 | V 3 | Ac output voltage | 10 | V EE | -15V |
| 4 | V 4 | Ac output voltage 1 | 11 | D | Filtering is amplified |
| 5 | GND | Ground wire | 12 | V IN | The modulating wave input |
| 6 | V | Signal output | 13 | K 13 | The AC signal control end |
| 7 | V CC1 | +5V | 14 | K | Uneven control end |
| 15 | G | Link to each other with shell | ? | ? | ? |
Claims (10)
1. consumption conditioner, comprise that being integrated in a pumping signal in the module by thick mould produces circuit, testing circuit, modulation-demodulation circuit and pulse signal generating circuit, it is characterized in that, produce in the circuit in pumping signal, control end is provided with the RC bridge-type sine wave oscillation circuit of K switch 4 and capacitor C 15, the series connection power amplification circuit, two ac-excited signals that RC bridge-type sine wave oscillation circuit produces by power amplification circuit, just passing through respectively, negative voltage follower circuit excitation consumption sensor two ends, make the consumption sensor in rotation process, form a modulated carrier signal, this modulated carrier signal is through above-mentioned modulation-demodulation circuit filtering, detection, amplify, relatively, send into pulse signal generating circuit, generate one for the pulse signal of microprocessor identification.
2. consumption conditioner as claimed in claim 1 is characterized in that: described pumping signal produces circuit and comprises: Chuan Lian RC bridge-type sine wave oscillation circuit, power amplification circuit and two-phase voltage follower circuit successively.
3. consumption conditioner as claimed in claim 1 or 2, it is characterized in that: described RC bridge-type sine wave oscillation circuit comprises, by being connected on the capacitor C 13 between resistance R 39 and the resistance R 37 and being connected on the RC vibration bridge that the capacitor C 23 of operational amplifier U23C backward end constitutes.
4. consumption conditioner as claimed in claim 3, it is characterized in that: described vibration bridge has the frequency-selecting effect, and high-frequency signal is absorbed by capacitor C 23, and low frequency signal is absorbed by capacitor C 13, and can only export the signal of fixed frequency, this fixed frequency f
0=1/2 π RC, R39=R37=R in the formula, C23=C13=C.
5. consumption conditioner as claimed in claim 2, it is characterized in that: described two-phase voltage follower circuit comprises being connected in parallel on positive amplifying circuit and negative amplifying circuit between power amplification circuit and the consumption sensor.
6. consumption conditioner as claimed in claim 1, it is characterized in that: testing circuit is connected in parallel between RC bridge-type sine wave oscillation circuit and the described negative amplifying circuit.
7. consumption conditioner as claimed in claim 1, it is characterized in that: modulation-demodulation circuit comprises: successively with consumption sensor, filtering circuit, detecting circuit, amplifying circuit and the comparator circuit of the pulse signal generating circuit of connecting.
8. consumption conditioner as claimed in claim 1, it is characterized in that: the RC bridge-type sine wave oscillation circuit that pumping signal produces in the circuit produces the sine wave that fixed frequency is 4KHZ, behind power amplification circuit amplification and two-phase voltage follower circuit, forming frequency all is 4KHZ, amplitude is 10V, 13V, 2 ac-excited signals that the phase phasic difference is 180 °.
9. consumption conditioner as claimed in claim 8, it is characterized in that: in RC bridge-type sine wave oscillation circuit, the resistance R 44, the resistance R 45 that are connected on operational amplifier U23C forward end contact both sides have constituted a voltage-type negative feedback amplifier circuit with direct earth capacitance C15.
10. consumption conditioner as claimed in claim 9, it is characterized in that: described voltage-type negative feedback amplifier circuit is the start-oscillation circuit of above-mentioned RC vibration bridge, when the resistance R 44 in the start-oscillation circuit〉during 2R45, the starting of oscillation of RC vibration bridge, produce sine-wave oscillation ripple signal, this signal reaches the output voltage balance by the voltage negative feedback that R44, R45 constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074328 CN203216546U (en) | 2013-02-18 | 2013-02-18 | Consumption regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320074328 CN203216546U (en) | 2013-02-18 | 2013-02-18 | Consumption regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203216546U true CN203216546U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320074328 Expired - Lifetime CN203216546U (en) | 2013-02-18 | 2013-02-18 | Consumption regulator |
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| Country | Link |
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| CN (1) | CN203216546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134559A (en) * | 2013-02-18 | 2013-06-05 | 成都泛华航空仪表电器有限公司 | Consumption signal conversion module |
| CN105424118A (en) * | 2015-12-11 | 2016-03-23 | 中国航空工业集团公司西安航空计算技术研究所 | Engine fuel flow measuring method and system thereof |
| CN115468632A (en) * | 2022-10-19 | 2022-12-13 | 佛山市汉立电子科技有限公司 | Liquid shortage detection device and method and atomizer |
-
2013
- 2013-02-18 CN CN 201320074328 patent/CN203216546U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134559A (en) * | 2013-02-18 | 2013-06-05 | 成都泛华航空仪表电器有限公司 | Consumption signal conversion module |
| CN103134559B (en) * | 2013-02-18 | 2015-03-11 | 四川泛华航空仪表电器有限公司 | Consumption signal conversion module |
| CN105424118A (en) * | 2015-12-11 | 2016-03-23 | 中国航空工业集团公司西安航空计算技术研究所 | Engine fuel flow measuring method and system thereof |
| CN105424118B (en) * | 2015-12-11 | 2019-01-01 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of engine fuel flow-measuring method and its system |
| CN115468632A (en) * | 2022-10-19 | 2022-12-13 | 佛山市汉立电子科技有限公司 | Liquid shortage detection device and method and atomizer |
| CN115468632B (en) * | 2022-10-19 | 2023-10-20 | 佛山市汉立电子科技有限公司 | Liquid shortage detection device and method and atomizer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |