CN210181038U - Simple engine oil quality detection device - Google Patents
Simple engine oil quality detection device Download PDFInfo
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- CN210181038U CN210181038U CN201920940467.2U CN201920940467U CN210181038U CN 210181038 U CN210181038 U CN 210181038U CN 201920940467 U CN201920940467 U CN 201920940467U CN 210181038 U CN210181038 U CN 210181038U
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 239000010705 motor oil Substances 0.000 title claims description 28
- 238000004891 communication Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 58
- 238000012360 testing method Methods 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 6
- 239000010721 machine oil Substances 0.000 abstract description 9
- 230000005611 electricity Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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Abstract
The utility model discloses a simple and easy machine oil quality detection device, including control circuit, quality detection circuit, communication circuit, alarm circuit and power supply circuit, quality detection circuit, communication circuit, alarm circuit all is connected with the control circuit electricity, control circuit's output electricity is connected with data display, quality detection circuit can carry out machine oil quality detection, the machine oil dielectric constant that obtains etc. detect data, and show in data display, thereby consider the good or bad of machine oil quality, alarm circuit can report to the police unusual detection machine oil, whole detection device can carry out data communication through communication circuit external equipment, and guarantee to have circuit structure simple when detecting data accuracy, small, advantage with low costs.
Description
Technical Field
The utility model relates to an oil check out test set, especially a simple and easy type engine oil quality detection device.
Background
The engine oil material caused by the friction among various parts of the automobile accounts for 5.5 percent of the total amount, the fault caused by the friction of internal parts accounts for 49 percent of the total fault of the engine, high-quality engine oil plays a crucial role in the fault of the parts, the adhesion of the engine oil is reduced when the engine oil is not replaced for a long time, on the other hand, a large amount of metal particles can be generated by the friction of the parts, therefore, the reduction of the quality of the engine oil leads to the increase of the frequency of the engine failure, the owner needs to know the running state of the engine oil to the engine in time, the existing engine oil quality detector mostly adopts XRF and infrared modes to monitor the quality of the engine oil, an engine oil quality monitoring system is designed based on a CAN bus mode, engine oil parameters are collected in real time, however, such a system usually needs a complex driving circuit to implement, so that the volume of the whole equipment is large, the internal space of the automobile is greatly occupied, and the application value is not high.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a simple and easy type engine oil quality detection device which is accurate in measurement and calculation, small in size and simple in circuit structure.
The utility model provides a technical scheme that its technical problem adopted is:
the simple engine oil quality detection device comprises a control circuit, a quality detection circuit, a communication circuit, an alarm circuit and a power supply circuit for providing a working power supply for the circuits, wherein the quality detection circuit, the communication circuit and the alarm circuit are electrically connected with the control circuit, and the output end of the control circuit is electrically connected with a data display.
The control circuit comprises a main control chip U4, and the main control chip U4 is electrically connected with a zero calibration key, a data serial port and a reset circuit.
The quality detection circuit comprises a detection probe J2, a self-locking switch K2, a test chip U2, a resistor R2, a resistor R3, a capacitor C11 and a capacitor C12; the 2 pin of the detection probe J2 is grounded, and the 1 pin is connected with the 6 pin of the test chip U2 through the self-locking switch K2; the 1 pin of the test chip U2 is grounded, the 2 pin is divided into two paths, one path is grounded through the capacitor C12, and the other path is connected with 5V voltage through the resistor R2 and the resistor R3 in sequence; the pin 3 of the test chip U2 is connected with the pin 14 of the main control chip U4; the 4 pins of the test chip U2 are connected with 5V voltage; the pin 5 of the test chip U2 is grounded through the capacitor C11; the 7 pins of the test chip U2 are connected with the node of the resistor R2 and the resistor R3; the 8 pins of the test chip U2 are connected with 5V voltage.
The test chip U2 is an NE555 timer.
The communication circuit comprises a data interface RS, a driving chip U3, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6 and a capacitor C7; pins 3 and 4 of the data interface RD are respectively connected with pins 13 and 14 of the driving chip U3, pin 5 is grounded, and the rest pins are suspended; the pin 1 of the driving chip U3 is connected with the pin 3 of the driving chip U3 through the capacitor C3; the 2 pins of the driving chip U3 are divided into two paths after passing through the capacitor C5, one path is connected with the 16 pins of the driving chip U3, and the other path is grounded through the capacitor C6; the 4 pins of the driving chip U3 are connected with the 5 pins of the driving chip U3 through the capacitor C4; the 6 pins of the driving chip U3 are grounded through the capacitor C7; pins 7, 8, 9 and 10 of the driving chip U3 are suspended; pins 11 and 12 of the driving chip U3 are respectively connected with pins 11 and 10 of the main control chip U4; the 15 pin of the driving chip U3 is grounded.
The power supply circuit comprises a power supply interface J1, a transformer TR1, a rectifier B1, a capacitor C1, a capacitor C2, a resistor R1, a light-emitting diode D1, a conversion chip U1 and a self-locking switch K1; pins 1 and 2 of the power supply interface J1 are respectively connected with pins 2 and 1 of the transformer TR 1; pins 4 and 3 of the transformer TR1 are respectively connected with pins 2 and 3 of the rectifier B1; the 4 pins of the rectifier B1 are grounded, the 1 pin is divided into two paths, one path is grounded through the capacitor C1, and the other path is connected with the 1 pin of the conversion chip U1; the 3 pins of the conversion chip U1 are grounded, the 2 pins are divided into two paths, one path is grounded through the capacitor C2, and the second path is grounded through the self-locking switch K1, the resistor R1 and the light emitting diode D1 in sequence.
The model of the main control chip U4 is STC89C 52.
The data display is an LCD display.
The utility model has the advantages that: the utility model discloses a quality detection circuitry can carry out the machine oil quality and detect, and the machine oil dielectric constant that obtains etc. detect data to show in data display, thereby consider the good bad of machine oil quality, alarm circuit can report to the police unusual detection machine oil, and whole detection device can carry out data communication through communication circuit external equipment, and has circuit structure simple, small, advantage with low costs when guaranteeing that the detection data is accurate.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic block diagram of the circuit of the present invention;
fig. 2 is a first part of a circuit schematic of the present invention;
fig. 3 is a second part of the circuit schematic of the present invention;
fig. 4 is a third part of the circuit schematic of the present invention.
Detailed Description
Referring to fig. 1, a simple engine oil quality detection device includes a control circuit, a quality detection circuit, a communication circuit, an alarm circuit, and a power circuit for providing a working power supply for the above circuits, where the quality detection circuit, the communication circuit, and the alarm circuit are all electrically connected to the control circuit, an output end of the control circuit is electrically connected to a data display, and the data display is an LCD display, and has the advantages of small volume, low price, and variable display contents (fig. 2 to 4 together are a complete circuit schematic diagram of the embodiment, and for easy observation, the complete circuit diagram is divided into three parts, i.e., fig. 2 to 4, and terminals with the same number in the diagram represent electrical connections).
Referring to fig. 2, the control circuit includes a main control chip U4, the main control chip U4 is electrically connected with a zero calibration key (labeled as K4 in the figure), a data serial port (labeled as CK1 in the figure, which is a full-duplex serial communication port for user communication docking), and a reset circuit, the reset circuit includes a resistor R5, a resistor R6, a capacitor C10 and a key K3, the control chip U4 has three pins 9, one of the three pins is connected with 5V voltage through the capacitor C10, the second is grounded through the resistor R6, the third pin is connected with 5V voltage through the resistor R5 and the key K3 in turn, the key K3 is a reset key, and when the main control chip U4 fails, the initial reset is performed; the model of the main control chip U4 is STC89C52, and has the advantages of small volume, convenient configuration and strong reliability.
Referring to fig. 3, the quality detection circuit includes a detection probe J2, a self-locking switch K2, a test chip U2, a resistor R2, a resistor R3, a capacitor C11 and a capacitor C12; the 2 pin of the detection probe J2 is grounded, and the 1 pin is connected with the 6 pin of the test chip U2 through the self-locking switch K2; the 1 pin of the test chip U2 is grounded, the 2 pin is divided into two paths, one path is grounded through the capacitor C12, and the other path is connected with 5V voltage through the resistor R2 and the resistor R3 in sequence; the pin 3 of the test chip U2 is connected with the pin 14 of the main control chip U4; the 4 pins of the test chip U2 are connected with 5V voltage; the pin 5 of the test chip U2 is grounded through the capacitor C11; the 7 pins of the test chip U2 are connected with the node of the resistor R2 and the resistor R3; the 8 pins of the test chip U2 are connected with 5V voltage; the testing chip U2 is an NE555 timer, is a digital-analog mixed integrated chip, and has the characteristics of low cost, reliable performance and simple operation, the quality detection circuit adopts a capacitance measurement mode to detect the quality of the engine oil, the NE555 timer is adopted to convert capacitance into frequency quantity for the main control chip U4 to collect and process, the dielectric constant of the engine oil is obtained and displayed on a data display, and when the dielectric constant is greater than a set threshold value, the alarm circuit gives a bee alarm, so that the quality of the engine oil is considered, and the detection is accurate.
The communication circuit comprises a data interface RS, a driving chip U3 (marked by a mark MAX232 in the figure), a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6 and a capacitor C7; pins 3 and 4 of the data interface RD are respectively connected with pins 13 and 14 of the driving chip U3, pin 5 is grounded, and the rest pins are suspended; the pin 1 of the driving chip U3 is connected with the pin 3 of the driving chip U3 through the capacitor C3; the 2 pins of the driving chip U3 are divided into two paths after passing through the capacitor C5, one path is connected with the 16 pins of the driving chip U3, and the other path is grounded through the capacitor C6; the 4 pins of the driving chip U3 are connected with the 5 pins of the driving chip U3 through the capacitor C4; the 6 pins of the driving chip U3 are grounded through the capacitor C7; pins 7, 8, 9 and 10 of the driving chip U3 are suspended; pins 11 and 12 of the driving chip U3 are respectively connected with pins 11 and 10 of the main control chip U4; the 15 pin of the driving chip U3 is grounded; the data interface RS is an RS232 data communication interface and is used for data transmission of external equipment, the capacitive voltage generator is integrated in the driving chip U3, an EIA/TIA-232-E level is specially provided, the capacitive voltage generator is specially used for adapting to the data interface RS, and the effect of simplifying a circuit can be achieved due to the good integration level of the chip.
Referring to fig. 4, the power supply circuit includes a power supply interface J1, a transformer TR1, a rectifier B1 (labeled as KBP310 in the figure), a capacitor C1, a capacitor C2, a resistor R1, a light emitting diode D1, a conversion chip U1 (labeled as LM7805CK in the figure), and a self-locking switch K1; pins 1 and 2 of the power supply interface J1 are respectively connected with pins 2 and 1 of the transformer TR 1; pins 4 and 3 of the transformer TR1 are respectively connected with pins 2 and 3 of the rectifier B1; the 4 pins of the rectifier B1 are grounded, the 1 pin is divided into two paths, one path is grounded through the capacitor C1, and the other path is connected with the 1 pin of the conversion chip U1; the 3 pins of the conversion chip U1 are grounded, the 2 pins are divided into two paths, one path is grounded through the capacitor C2, the second path is grounded through the self-locking switch K1, the resistor R1 and the light emitting diode D1 in sequence, the light emitting diode D1 is a work indicator lamp, a node of the self-locking switch K1 and the resistor R1 provides a 5V work power supply for the whole detection device, and the capacitor C1 and the capacitor C2 are both filtering power supplies, so that the work power supply provided by a power circuit is more stable.
The alarm circuit mainly comprises a resistor R7, a resistor R8, a buzzer M1 and the triode Q1 for driving the buzzer M1, and gives an alarm when the quality of the detected engine oil exceeds a threshold value, namely the engine oil needs to be replaced.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (8)
1. The simple engine oil quality detection device is characterized by comprising a control circuit, a quality detection circuit, a communication circuit, an alarm circuit and a power supply circuit for providing a working power supply for the circuits, wherein the quality detection circuit, the communication circuit and the alarm circuit are electrically connected with the control circuit, and the output end of the control circuit is electrically connected with a data display.
2. The simple engine oil quality detection device of claim 1, wherein the control circuit comprises a main control chip U4, and the main control chip U4 is electrically connected with a zero calibration key, a data serial port and a reset circuit.
3. The simple engine oil quality detection device of claim 2, wherein the quality detection circuit comprises a detection probe J2, a self-locking switch K2, a test chip U2, a resistor R2, a resistor R3, a capacitor C11 and a capacitor C12; the 2 pin of the detection probe J2 is grounded, and the 1 pin is connected with the 6 pin of the test chip U2 through the self-locking switch K2; the 1 pin of the test chip U2 is grounded, the 2 pin is divided into two paths, one path is grounded through the capacitor C12, and the other path is connected with 5V voltage through the resistor R2 and the resistor R3 in sequence; the pin 3 of the test chip U2 is connected with the pin 14 of the main control chip U4; the 4 pins of the test chip U2 are connected with 5V voltage; the pin 5 of the test chip U2 is grounded through the capacitor C11; the 7 pins of the test chip U2 are connected with the node of the resistor R2 and the resistor R3; the 8 pins of the test chip U2 are connected with 5V voltage.
4. The simplified engine oil quality detection device as claimed in claim 3, wherein the test chip U2 is NE555 timer.
5. The simple engine oil quality detection device of claim 2, wherein the communication circuit comprises a data interface RS, a driving chip U3, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6 and a capacitor C7; pins 3 and 4 of the data interface RD are respectively connected with pins 13 and 14 of the driving chip U3, pin 5 is grounded, and the rest pins are suspended; the pin 1 of the driving chip U3 is connected with the pin 3 of the driving chip U3 through the capacitor C3; the 2 pins of the driving chip U3 are divided into two paths after passing through the capacitor C5, one path is connected with the 16 pins of the driving chip U3, and the other path is grounded through the capacitor C6; the 4 pins of the driving chip U3 are connected with the 5 pins of the driving chip U3 through the capacitor C4; the 6 pins of the driving chip U3 are grounded through the capacitor C7; pins 7, 8, 9 and 10 of the driving chip U3 are suspended; pins 11 and 12 of the driving chip U3 are respectively connected with pins 11 and 10 of the main control chip U4; the 15 pin of the driving chip U3 is grounded.
6. The simple engine oil quality detection device of claim 1, wherein the power circuit comprises a power supply interface J1, a transformer TR1, a rectifier B1, a capacitor C1, a capacitor C2, a resistor R1, a light-emitting diode D1, a conversion chip U1 and a self-locking switch K1; pins 1 and 2 of the power supply interface J1 are respectively connected with pins 2 and 1 of the transformer TR 1; pins 4 and 3 of the transformer TR1 are respectively connected with pins 2 and 3 of the rectifier B1; the 4 pins of the rectifier B1 are grounded, the 1 pin is divided into two paths, one path is grounded through the capacitor C1, and the other path is connected with the 1 pin of the conversion chip U1; the 3 pins of the conversion chip U1 are grounded, the 2 pins are divided into two paths, one path is grounded through the capacitor C2, and the second path is grounded through the self-locking switch K1, the resistor R1 and the light emitting diode D1 in sequence.
7. The simplified engine oil quality detection device as claimed in claim 2, wherein the main control chip U4 is STC89C 52.
8. The apparatus of claim 1, wherein the data display is an LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920940467.2U CN210181038U (en) | 2019-06-20 | 2019-06-20 | Simple engine oil quality detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920940467.2U CN210181038U (en) | 2019-06-20 | 2019-06-20 | Simple engine oil quality detection device |
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| CN210181038U true CN210181038U (en) | 2020-03-24 |
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| CN201920940467.2U Expired - Fee Related CN210181038U (en) | 2019-06-20 | 2019-06-20 | Simple engine oil quality detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748353A (en) * | 2020-12-29 | 2021-05-04 | 烟台大学 | XPSI board fault diagnosis method for high-voltage generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748353A (en) * | 2020-12-29 | 2021-05-04 | 烟台大学 | XPSI board fault diagnosis method for high-voltage generator |
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