CN105424117A - Pulse shaping type oil consumption tester based on temperature detection - Google Patents
Pulse shaping type oil consumption tester based on temperature detection Download PDFInfo
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- CN105424117A CN105424117A CN201510815695.3A CN201510815695A CN105424117A CN 105424117 A CN105424117 A CN 105424117A CN 201510815695 A CN201510815695 A CN 201510815695A CN 105424117 A CN105424117 A CN 105424117A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
- G01F9/001—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means
Abstract
The invention discloses a pulse shaping type oil consumption tester based on temperature detection. The pulse shaping type oil consumption tester is characterized by being composed of a single-chip microcomputer, a voltage-stabilizing power source module, a displayer, a keyboard, a wireless transmission unit, a network interface, a pulse shaping unit, a temperature detection unit and an oil consumption sensor, wherein the voltage-stabilizing power source module, the displayer, the keyboard, the wireless transmission unit, the network interface, the pulse shaping unit and the temperature detection unit are connected with the single-chip microcomputer, and the oil consumption sensor is connected with the pulse shaping unit. Collected oil consumption signals can be shaped, and the distortion phenomenon of the oil consumption signals during transmission is avoided. Meanwhile, the temperature of machine oil can be detected, and the situation that an oil consumption meter is damaged due to the too high temperature of the machine oil is avoided.
Description
Technical field
The present invention relates to a kind of fuel consumption tester, specifically refer to a kind of shaping pulse formula fuel consumption tester based on temperature detection.
Background technology
Fuel consumption meter is the important detecting instrument weighing motor vehicle economic performance, power performance, is the necessary detecting instrument of automobile, tractor manufacturing, agricultural machinery safety supervision department and scientific research department.The fuel consumption tester used at present, must be connected the transmission that just can complete test data, test curve with computer with data line.And tester is connected with computer continually, greatly have impact on the work efficiency of tester.Meanwhile, traditional fuel consumption tester complex structure cost is high, is unfavorable for extensive popularization.
Summary of the invention
The object of the invention is to overcome existing fuel consumption tester inefficiency, baroque defect, a kind of shaping pulse formula fuel consumption tester based on temperature detection is provided.
Object of the present invention is achieved through the following technical solutions: based on the shaping pulse formula fuel consumption tester of temperature detection, by single-chip microcomputer, the power module of voltage regulation be all connected with single-chip microcomputer, display, keyboard, wireless transmission unit, network interface, pulse shaping unit and temperature detecting unit, and the fuel consume sensor be connected with pulse shaping unit forms, described pulse shaping unit is by XOR gate A1, XOR gate A2, XOR gate A3, XOR gate A4, triode VT3, triode VT4, be serially connected with the resistance R7 between the output terminal of XOR gate A1 and the negative pole of XOR gate A4, be serially connected in the resistance R9 between the collector of triode VT3 and the collector of triode VT4, be serially connected in the electric capacity C4 between the emitter of triode VT3 and the base stage of triode VT4, P pole is connected with the output terminal of XOR gate A4, N pole is then as the diode D4 of the output terminal of this pulse shaping unit, and one end is connected with the emitter of triode VT4, the resistance R8 that the other end is then connected with the N pole of diode D4 forms, the positive pole of described XOR gate A1 forms the input end of this pulse shaping unit, its minus earth, its output terminal are then connected with the positive pole of XOR gate A2, minus earth, its output terminal of described XOR gate A2 are then connected with the positive pole of XOR gate A3, the positive pole of described XOR gate A3 is connected with the base stage of triode VT3, its negative pole is then connected with the output terminal of XOR gate A4, its output terminal is then connected with the positive pole of XOR gate A4, the collector of described triode VT3 connects 5V voltage, its emitter is then connected with the output terminal of XOR gate A3, the input end of described pulse shaping unit is connected with fuel consume sensor, its output terminal is then connected with single-chip microcomputer, described temperature detecting unit is by thermopair J, process chip U1, amplifier P1, amplifier P2, be serially connected in the resistance R10 between the UO pin of process chip U1 and the positive pole of amplifier P1, be serially connected in the resistance R12 between the negative pole of amplifier P1 and its output terminal, N pole is connected with the negative pole of amplifier P1, P pole is then in turn through diode D5 that resistance R11 is connected with the positive pole of amplifier P2 after electric capacity C5, positive pole is connected with the positive pole of amplifier P2 after resistance R13, the electric capacity C6 that negative pole is then connected with the tie point of electric capacity C5 with resistance R11, and the resistance R14 be serially connected between the output terminal of amplifier P1 and the output terminal of amplifier P2 forms,-IN the pin of described process chip U1 is connected with the signal output part of thermopair J respectively with+IN pin, its-ALM pin is then all connected with its+IN pin with COM pin, and its FB pin is then connected with the negative pole of amplifier P1, and its U+ pin then connects 5V voltage, the output terminal that the negative pole of described amplifier P2 is connected with its output terminal, its output terminal then forms this temperature detecting unit, the output terminal of described temperature detecting unit is connected with single-chip microcomputer.
Further, described power module of voltage regulation is by triode VT1, triode VT2, voltage stabilizing chip U, positive pole is connected with the emitter of triode VT1, the polar capacitor C1 of minus earth, one end is connected with the IN pin of voltage stabilizing chip U, the resistance R1 that the other end is then connected with the base stage of triode VT1, positive pole is connected with the collector of triode VT1 after resistance R6, the electric capacity C3 that negative pole is then connected with the ADJ pin of voltage stabilizing chip U, the electric capacity C2 be in parallel with resistance R6, one end is connected with the ADJ pin of voltage stabilizing chip U, the resistance R4 of other end ground connection, one end is connected with the emitter of triode VT2, the resistance R3 that the other end is then connected with the ADJ pin of voltage stabilizing chip U, one end is connected with the collector of triode VT2, the other end then forms the resistance R5 of the output terminal of this power module of voltage regulation, P pole is connected with the ADJ pin of voltage stabilizing chip U, the diode D1 that N pole is then connected with the base stage of triode VT2 after diode D2, one end is connected with the OUT pin of voltage stabilizing chip U, the resistance R2 that the other end is then connected with the N pole of diode D1, and N pole is connected with the OUT pin of voltage stabilizing chip U, the diode D3 that P pole is then connected with the collector of triode VT2 forms, the described OUT pin of voltage stabilizing chip U is all connected with the positive pole of electric capacity C3 with the collector of triode VT2, the base stage of described triode VT1 then forms the input end of this power module of voltage regulation, the output terminal of described power module of voltage regulation is connected with single-chip microcomputer.
In order to reach better implementation result, described voltage stabilizing chip U is preferably LM317K integrated chip, and triode VT1 and triode VT2 is then all preferably MJ4502 type triode, and described process chip U1 is preferably AD594C integrated chip to realize.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can not need data line oil consumption detection signal can be transferred to outside computing machine by wireless transmission unit, avoids complicacy and the limitation of wired connection.
(2) the present invention is also provided with network interface simultaneously, and this network interface can be connected with outer computer by data line, and therefore the present invention can adopt wireless and wired two kinds of transmission modes simultaneously, improves its applicability.
(3) the present invention is provided with power module of voltage regulation, and it can guarantee that the present invention has stable operating voltage, avoids voltage fluctuation and affects its measuring accuracy.
(4) the present invention can carry out Shape correction to the oil consumption signal collected, and avoids oil consumption signal in the process of transmission, occur the existing picture of distortion.
(5) the present invention can detect oil temperature, avoids oil temperature too high and damages fuel consumption meter.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the circuit structure diagram of power module of voltage regulation of the present invention.
Fig. 3 is the circuit structure diagram of pulse shaping unit of the present invention.
Fig. 4 is the circuit structure diagram of temperature detecting unit of the present invention.
Embodiment
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 shown in Figure 1, shaping pulse formula fuel consumption tester based on temperature detection of the present invention, by single-chip microcomputer, the pulse shaping unit be connected with single-chip microcomputer, power module of voltage regulation, display, keyboard, wireless transmission unit, temperature detecting unit and network interface, and the fuel consume sensor be connected with pulse shaping unit forms.
Wherein, fuel consume sensor is arranged in engine oil tank, for gathering the fuel consumption information of engine and being transferred to pulse shaping unit, its DYP/DS1309 type fuel consume sensor preferentially adopting Shenzhen civil power Ying Pu Science and Technology Ltd. to produce, the fuel consume sensor of this model has the temperature compensation range of-40 ~ 80 DEG C, can use under the various states of engine, and there is very high sensitivity.
Single-chip microcomputer is as control center of the present invention, and it is for processing fuel consumption information and controlling other module, and it preferably adopts arm processor to realize.Display is used for showing oil consumption test result intuitively.Keyboard is then as human-computer exchange window, and tester can arrange test parameter by keyboard to single-chip microcomputer.This wireless transmission unit then for the fuel consumption parameters collected is sent to outer computer in a wireless form, avoids complicacy and the limitation of wired connection, and it can adopt bluetooth to realize.This network interface can be connected with outer computer by data line, and to computing machine transmission fuel consumption information, it can use under the operating mode needing wired connection.This temperature detecting unit is arranged in engine oil tank, it is for detecting oil temperature, whether tester can assess fuel consumption tester according to oil temperature and be suitable for, and as oil temperature is too high, then allows fuel consumption tester quit work in time and avoids it to damage because of high temperature.
In addition, this power module of voltage regulation is used for providing stable working power to other module, and its structure as shown in Figure 2, by triode VT1, triode VT2, voltage stabilizing chip U, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, diode D1, diode D2, diode D3, polar capacitor C1, electric capacity C2 and electric capacity C3 form.
During connection, the positive pole of polar capacitor C1 is connected with the emitter of triode VT1, its minus earth, one end of resistance R1 is connected with the IN pin of voltage stabilizing chip U, its other end is then connected with the base stage of triode VT1, the positive pole of electric capacity C3 is connected with the collector of triode VT1 after resistance R6, its negative pole is then connected with the ADJ pin of voltage stabilizing chip U, electric capacity C2 is then in parallel with resistance R6, electric capacity C2 and resistance R6 then forms a RC wave filter thus, and it can carry out filtering process to input voltage.
In addition, one end of resistance R4 is connected with the ADJ pin of voltage stabilizing chip U, its other end ground connection, one end of resistance R3 is connected with the emitter of triode VT2, its other end is then connected with the ADJ pin of voltage stabilizing chip U, one end of resistance R5 is connected with the collector of triode VT2, its other end then forms the output terminal of this power module of voltage regulation, the P pole of diode D1 is connected with the ADJ pin of voltage stabilizing chip U, its N pole is then connected with the base stage of triode VT2 after diode D2, one end of resistance R2 is connected with the OUT pin of voltage stabilizing chip U, its other end is then connected with the N pole of diode D1, the N pole of diode D3 is connected with the OUT pin of voltage stabilizing chip U, its P pole is then connected with the collector of triode VT2.
The described OUT pin of voltage stabilizing chip U is all connected with the positive pole of electric capacity C3 with the collector of triode VT2.The base stage of described triode VT1 then forms the input end of this power module of voltage regulation.The output terminal of described power module of voltage regulation is connected with single-chip microcomputer.In order to the implementation result reached, this voltage stabilizing chip U is preferably LM317K integrated chip, and described triode VT1 and triode VT2 is then all preferably MJ4502 type triode and realizes.
This pulse shaping unit can carry out Shape correction to the oil consumption signal collected, and avoids oil consumption signal in the process of transmission, occur the existing picture of distortion; As shown in Figure 3, by XOR gate A1, XOR gate A2, XOR gate A3, XOR gate A4, triode VT3, triode VT4, resistance R7, resistance R8, resistance R9, electric capacity C4 and diode D4 form its structure.
During connection, resistance R7 is serially connected with between the output terminal of XOR gate A1 and the negative pole of XOR gate A4, resistance R9 is then serially connected between the collector of triode VT3 and the collector of triode VT4, electric capacity C4 is serially connected between the emitter of triode VT3 and the base stage of triode VT4, the P pole of diode D4 is connected with the output terminal of XOR gate A4, its N pole then as the output terminal of this pulse shaping unit, one end of resistance R8 is connected with the emitter of triode VT4, its other end is then connected with the N pole of diode D4.
The collector of described triode VT3 connects 5V voltage, and it provides operating voltage for giving whole pulse shaping unit, and the emitter of triode VT3 is then connected with the output terminal of XOR gate A3.Meanwhile, the positive pole of this XOR gate A1 forms the input end of this pulse shaping unit, and this input end is connected with fuel consume sensor, and the minus earth of XOR gate A1, its output terminal is then connected with the positive pole of XOR gate A2.Minus earth, its output terminal of described XOR gate A2 are then connected with the positive pole of XOR gate A3.The positive pole of described XOR gate A3 is connected with the base stage of triode VT3, its negative pole is then connected with the output terminal of XOR gate A4, its output terminal is then connected with the positive pole of XOR gate A4.The input end of described pulse shaping unit is connected with fuel consume sensor, its output terminal is then connected with single-chip microcomputer.
As shown in Figure 4, it is by thermopair J, process chip U1, amplifier P1, amplifier P2, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, diode D5 for the structure of this temperature detecting unit, and electric capacity C5 and electric capacity C6 forms.
During connection, resistance R10 is serially connected between the UO pin of process chip U1 and the positive pole of amplifier P1, resistance R12 is then serially connected between the negative pole of amplifier P1 and its output terminal, the N pole of diode D5 is connected with the negative pole of amplifier P1, its P pole is then connected with the positive pole of amplifier P2 after electric capacity C5 through resistance R11 in turn, the positive pole of electric capacity C6 is connected with the positive pole of amplifier P2 after resistance R13, its negative pole is then connected with the tie point of electric capacity C5 with resistance R11, and resistance R14 is serially connected between the output terminal of amplifier P1 and the output terminal of amplifier P2.
-IN the pin of described process chip U1 is connected with the signal output part of thermopair J respectively with+IN pin, its-ALM pin is then all connected with its+IN pin with COM pin, and its FB pin is then connected with the negative pole of amplifier P1, and its U+ pin then connects 5V voltage.The output terminal that the negative pole of described amplifier P2 is connected with its output terminal, its output terminal then forms this temperature detecting unit.The output terminal of described temperature detecting unit is connected with single-chip microcomputer.
This thermopair J is for gathering the temperature signal of machine oil, and it preferentially adopts the WRPF-130G thermopair of sky, Beijing boat great cause instrument and meter for automation company limited production, its fast response time, and corrosion-resistant.Amplifier P1, diode D5, electric capacity C6, electric capacity C5, resistance R11, resistance R12, resistance R113, and resistance R14 forms A/D converter, its temperature signal is converted to digital signal and flows to single-chip microcomputer.In order to reach better implementation result, this process chip U1 is preferably AD594C integrated chip to realize.
As mentioned above, just well the present invention can be implemented.
Claims (5)
1. based on the shaping pulse formula fuel consumption tester of temperature detection, it is characterized in that, by single-chip microcomputer, the power module of voltage regulation be all connected with single-chip microcomputer, display, keyboard, wireless transmission unit, network interface, pulse shaping unit and temperature detecting unit, and the fuel consume sensor be connected with pulse shaping unit forms, described pulse shaping unit is by XOR gate A1, XOR gate A2, XOR gate A3, XOR gate A4, triode VT3, triode VT4, be serially connected with the resistance R7 between the output terminal of XOR gate A1 and the negative pole of XOR gate A4, be serially connected in the resistance R9 between the collector of triode VT3 and the collector of triode VT4, be serially connected in the electric capacity C4 between the emitter of triode VT3 and the base stage of triode VT4, P pole is connected with the output terminal of XOR gate A4, N pole is then as the diode D4 of the output terminal of this pulse shaping unit, and one end is connected with the emitter of triode VT4, the resistance R8 that the other end is then connected with the N pole of diode D4 forms, the positive pole of described XOR gate A1 forms the input end of this pulse shaping unit, its minus earth, its output terminal are then connected with the positive pole of XOR gate A2, minus earth, its output terminal of described XOR gate A2 are then connected with the positive pole of XOR gate A3, the positive pole of described XOR gate A3 is connected with the base stage of triode VT3, its negative pole is then connected with the output terminal of XOR gate A4, its output terminal is then connected with the positive pole of XOR gate A4, the collector of described triode VT3 connects 5V voltage, its emitter is then connected with the output terminal of XOR gate A3, the input end of described pulse shaping unit is connected with fuel consume sensor, its output terminal is then connected with single-chip microcomputer,
Described temperature detecting unit is by thermopair J, process chip U1, amplifier P1, amplifier P2, be serially connected in the resistance R10 between the UO pin of process chip U1 and the positive pole of amplifier P1, be serially connected in the resistance R12 between the negative pole of amplifier P1 and its output terminal, N pole is connected with the negative pole of amplifier P1, P pole is then in turn through diode D5 that resistance R11 is connected with the positive pole of amplifier P2 after electric capacity C5, positive pole is connected with the positive pole of amplifier P2 after resistance R13, the electric capacity C6 that negative pole is then connected with the tie point of electric capacity C5 with resistance R11, and the resistance R14 be serially connected between the output terminal of amplifier P1 and the output terminal of amplifier P2 forms,-IN the pin of described process chip U1 is connected with the signal output part of thermopair J respectively with+IN pin, its-ALM pin is then all connected with its+IN pin with COM pin, and its FB pin is then connected with the negative pole of amplifier P1, and its U+ pin then connects 5V voltage, the output terminal that the negative pole of described amplifier P2 is connected with its output terminal, its output terminal then forms this temperature detecting unit, the output terminal of described temperature detecting unit is connected with single-chip microcomputer.
2. the shaping pulse formula fuel consumption tester based on temperature detection according to claim 1, it is characterized in that: described power module of voltage regulation is by triode VT1, triode VT2, voltage stabilizing chip U, positive pole is connected with the emitter of triode VT1, the polar capacitor C1 of minus earth, one end is connected with the IN pin of voltage stabilizing chip U, the resistance R1 that the other end is then connected with the base stage of triode VT1, positive pole is connected with the collector of triode VT1 after resistance R6, the electric capacity C3 that negative pole is then connected with the ADJ pin of voltage stabilizing chip U, the electric capacity C2 be in parallel with resistance R6, one end is connected with the ADJ pin of voltage stabilizing chip U, the resistance R4 of other end ground connection, one end is connected with the emitter of triode VT2, the resistance R3 that the other end is then connected with the ADJ pin of voltage stabilizing chip U, one end is connected with the collector of triode VT2, the other end then forms the resistance R5 of the output terminal of this power module of voltage regulation, P pole is connected with the ADJ pin of voltage stabilizing chip U, the diode D1 that N pole is then connected with the base stage of triode VT2 after diode D2, one end is connected with the OUT pin of voltage stabilizing chip U, the resistance R2 that the other end is then connected with the N pole of diode D1, and N pole is connected with the OUT pin of voltage stabilizing chip U, the diode D3 that P pole is then connected with the collector of triode VT2 forms, the described OUT pin of voltage stabilizing chip U is all connected with the positive pole of electric capacity C3 with the collector of triode VT2, the base stage of described triode VT1 then forms the input end of this power module of voltage regulation, the output terminal of described power module of voltage regulation is connected with single-chip microcomputer.
3. the shaping pulse formula fuel consumption tester based on temperature detection according to claim 2, is characterized in that: described voltage stabilizing chip U is LM317K integrated chip.
4. the shaping pulse formula fuel consumption tester based on temperature detection according to claim 2, is characterized in that: described triode VT1 and triode VT2 is MJ4502 type triode.
5. the shaping pulse formula fuel consumption tester based on temperature detection according to claim 1 and 2, is characterized in that: described process chip U1 is AD594C integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510815695.3A CN105424117A (en) | 2015-11-20 | 2015-11-20 | Pulse shaping type oil consumption tester based on temperature detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510815695.3A CN105424117A (en) | 2015-11-20 | 2015-11-20 | Pulse shaping type oil consumption tester based on temperature detection |
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| CN105424117A true CN105424117A (en) | 2016-03-23 |
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| CN201510815695.3A Withdrawn CN105424117A (en) | 2015-11-20 | 2015-11-20 | Pulse shaping type oil consumption tester based on temperature detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911445A (en) * | 2016-07-01 | 2016-08-31 | 河北箱变电器有限公司 | Partial discharge and temperature monitoring device for power system |
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| CN1132419A (en) * | 1994-09-14 | 1996-10-02 | 中国科学院物理研究所 | Multifunctional high and low voltage power source having continuous adjustable frequency, voltage and waveshape |
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