CN211318123U - Intelligent digital display oil mist detector - Google Patents
Intelligent digital display oil mist detector Download PDFInfo
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- CN211318123U CN211318123U CN201922497223.4U CN201922497223U CN211318123U CN 211318123 U CN211318123 U CN 211318123U CN 201922497223 U CN201922497223 U CN 201922497223U CN 211318123 U CN211318123 U CN 211318123U
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Abstract
The application discloses an intelligent digital display oil mist detector, which comprises an oil mist detector main control unit, wherein the oil mist detector main control unit is connected with a sensor control unit; the oil mist detector main control unit comprises a controller, and the controller is connected with a power supply unit and an output control unit; the sensor control unit comprises a second controller, and the second controller is connected with the sensor unit, the analog-to-digital converter and the reference voltage unit; the digital-to-analog converter is also connected with an oil mist detector; the second controller is used for receiving the output signal of the sensor unit or the conversion signal output by the analog-to-digital converter, comparing the output signal or the conversion signal with the standard signal of the reference voltage unit and outputting a judgment signal; the controller is used for receiving the judgment signal and outputting a prompt control signal and a corresponding alarm signal; the power supply unit is used for generating and outputting conversion voltages of a plurality of voltage levels to provide power. The oil mist detection problem of a large diesel engine is effectively solved.
Description
Technical Field
The utility model relates to an engine detects technical field, concretely relates to intelligence digital display oil mist detector.
Background
The large diesel engine is widely applied as the power of ships, locomotives and generator sets, the existing oil mist concentration is detected by a measuring module, and the measuring module comprises an oil mist inlet, an oil mist channel, a measuring chamber, an oil mist outlet, a control circuit board, a transmitting pipe and a receiving pipe. An oil mist concentration sensor (patent number: ZL 201020562233.8) and an oil mist sensor (patent number: ZL 200910103911.6) are used as main sensing devices. Under the condition that a piston ring or a cylinder sleeve of a large diesel engine is damaged to cause excessive air leakage or overheating of a bearing and the like, the concentration of oil mist in a crankcase is increased, measures need to be taken as soon as possible, major safety accidents are avoided, even the whole diesel engine is scrapped, and the large diesel engine is an important component for guaranteeing the safe operation of the diesel engine. How to design a detector to detect the working state of a large-scale oil extraction machine and perform alarm processing is a technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
Not enough to exist among the prior art, the utility model provides an intelligence digital display oil mist detector has solved the oil mist of large-scale diesel engine and has detected and the alarm problem. In order to achieve the above purpose, the utility model adopts the following technical scheme:
the intelligent digital display oil mist detector comprises an oil mist detector main control unit, wherein the oil mist detector main control unit is connected with a sensor control unit; the oil mist detector main control unit comprises a controller, and the controller is connected with a power supply unit and an output control unit; the sensor control unit comprises a second controller, and the second controller is connected with the sensor unit, the analog-to-digital converter and the reference voltage unit; the analog-to-digital converter is also connected with an oil mist detector;
the second controller is used for receiving the output signal of the sensor unit or the conversion signal output by the analog-to-digital converter, comparing the output signal or the conversion signal with the standard signal of the reference voltage unit and outputting a judgment signal;
the controller is used for receiving the judgment signal and outputting a prompt control signal and a corresponding alarm signal;
the power supply unit is used for generating and outputting conversion voltages of a plurality of voltage levels to provide power.
Further, the sensor control unit further comprises a second display unit and a second storage unit, and the second display unit and the second storage unit are connected with a second control; the second display unit is used for displaying the output signal of the sensor unit.
Furthermore, the oil mist detector main control unit also comprises a display unit, a storage unit, a communication interface, an output control unit and an alarm unit; the display unit, the storage unit, the communication interface, the output control unit and the alarm unit are respectively connected with the controller; the alarm unit is used for executing an alarm function of an alarm signal; the output control unit is used for isolating and outputting the prompt control signal.
Further, the controller and the second controller communicate via a CAN bus.
Further, the second storage unit comprises a Micro SD card storage and an integrated IC storage.
Further, the control circuit is connected with an independent crystal oscillator unit, the crystal oscillator unit includes a first power supply unit U4, a battery backup power supply CF1 and a crystal oscillator chip U14, the crystal oscillator chip U14 is DS1339U-3, a reference voltage terminal VBAT of the crystal oscillator chip U14 is connected with an output terminal of the battery backup power supply CF1, and the first power supply unit U4 is connected with the reference voltage terminal VBAT of the crystal oscillator chip U14 through a diode D6.
Further, the communication interface comprises a USB interface and an RS485 communication unit.
Further, the prompt control signal comprises a parking electromagnetic valve trigger signal, an external alarm trigger signal, a local fault alarm trigger signal and a temperature alarm trigger signal.
Further, the sensor includes an oil mist separator and an oil mist concentration sensor.
Compared with the prior art, the utility model discloses following beneficial effect has:
the method and the device have the advantages that the sensor control unit collects and preprocesses the detection signals, compares the detection signals with the reference voltage in time and outputs corresponding signals, reduces errors in data transmission, and effectively generates alarm signals in time; the sensor signal is transmitted and processed respectively by digital transmission and analog transmission, and the sensor control unit has a certain judgment function, so that the problem of oil mist detection of a large diesel engine is solved effectively.
Drawings
FIG. 1 is a schematic diagram of a system of the present application;
FIG. 2 is a schematic diagram of a portion of a functional interface of a controller according to the present application;
FIG. 3 is a schematic diagram of a portion of a functional interface of a controller according to the present application;
FIG. 4 is a schematic diagram of a portion of a functional interface of a controller according to the present application;
FIG. 5 is a functional interface diagram of a second controller portion of the present application;
FIG. 6 is a circuit of an analog-to-digital conversion unit according to the present application;
FIG. 7 is a reference voltage cell circuit;
FIG. 8 is an alarm unit circuit;
FIG. 9 is a circuit of an independent crystal oscillator unit;
FIG. 10 is a power supply unit circuit;
fig. 11 is an output control unit circuit.
Detailed Description
The scheme will now be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-11, the intelligent digital display oil mist detector comprises an oil mist detector main control unit, which is connected with a sensor control unit; the oil mist detector main control unit comprises a controller, and the controller is connected with a power supply unit and an output control unit; the sensor control unit comprises a second controller, and the second controller is connected with the sensor unit, the analog-to-digital converter and the reference voltage unit; the analog-to-digital converter is also connected with an oil mist detector; the second controller is used for receiving the output signal of the sensor unit or the conversion signal output by the analog-to-digital converter, comparing the output signal or the conversion signal with the standard signal of the reference voltage unit and outputting a judgment signal; the controller is used for receiving the judgment signal and outputting a prompt control signal and a corresponding alarm signal; the power supply unit is used for generating and outputting conversion voltages of a plurality of voltage levels to provide power. The controller and the second control both adopt STM32F407VET6, and communication between the controllers is facilitated. Referring to fig. 6, the output signal of the oil mist detector passes through the U7A voltage follower, then the amplification factor is 1 through the amplifier U7b, then the output signal is input into the analog-to-digital converter U8 and then output, the U8 selects MCP3201-I/SN, the output is 5.6.7 pins, and the output is connected with the second controller. U7A and amplifier U7b increase the input impedance and reduce signal interference. The voltage reference end of the U8 adopts U6 and MCP1541T-I/TT, and the conversion accuracy is improved.
As shown in FIG. 7, the reference voltage unit is a voltage dividing resistor R31-R35; r38-41, wherein KEYUP, KEYDOWN, KEYENTER, KEYCANCEL, KEYSETUP, JKUP, JKDOWN, JKENTER, JKCANCEL and JKSETUP are reference points, and connected with the second controller.
Further, the sensor control unit further comprises a second display unit and a second storage unit, and the second display unit and the second storage unit are connected with a second control; the second display unit is used for displaying the output signal of the sensor unit.
The oil mist detector main control unit also comprises a display unit, a storage unit, a communication interface, an output control unit and an alarm unit; the display unit, the storage unit, the communication interface, the output control unit and the alarm unit are respectively connected with the controller; the alarm unit is used for executing an alarm function of an alarm signal; the alarm unit is shown in fig. 8, and the BELL out end is connected with the controller and the second controller to send out alarm prompt tones.
The output control unit is used for isolating and outputting the prompt control signal. The controller and the second controller communicate via a CAN bus. The CAN bus is implemented by an SN65HVD230D chip. The display unit selects OLED-0.96-30PIN for displaying the oil mist concentration, temperature and working state of each monitoring point. And (3) displaying monitoring information of 10 channels at most on each screen, and automatically turning the screen every 5 seconds. Under the normal working state, the working indicator lamp on the panel of the main control unit of the oil mist detector displays a red flashing state. The second display unit is selected from the DC-LCD4.3 for displaying, and the second controller is connected with the DC-LCD4.3 display unit through the SP3232EEN communication unit, so that the display effect of the DC-LCD4.3 display unit is improved. The second storage unit comprises a Micro SD card storage and an integrated IC storage. The control connection is provided with an independent crystal oscillator unit, the crystal oscillator unit comprises a first power supply unit U4, a battery standby power supply CF1 and a crystal oscillator chip U14, the crystal oscillator chip U14 is DS1339U-3, a reference voltage end VBAT of the crystal oscillator chip U14 is connected with the output end of the battery standby power supply CF1, and the first power supply unit U4 is connected with the reference voltage end VBAT of the crystal oscillator chip U14 through a diode D6. As shown in FIG. 9, HT7536-1 is selected for the first power supply unit U4.
Further, the communication interface comprises a USB interface and an RS485 communication unit. The RS485 communication unit selects SP3485EN, the RS485 communication adopts a two-wire system signal transmission mode and a standard modbus protocol, the networking with a PLC or a computer is convenient, and the signal transmission distance can reach more than 1000 meters. RS485 communication cable: on the occasions of low speed, short distance and no interference, a common twisted pair can be adopted; when the transmission is carried out at high speed and in long distance, an RS485 special cable (STP-120 omega (for RS485& CAN) one pair 18AWG) is required to be adopted; under the environment of severe interference, an armored twisted pair shielded cable (ASTP-120 omega (for RS485& CAN) one pair 18AWG) is also adopted. Besides a CAN bus, the oil mist concentration sensor control unit and the oil mist detector main control unit CAN also carry out signal transmission through an RS485 bus, at most 20 sensor control units CAN be connected, and when a plurality of diesel engines are combined and applied, the application cost CAN be reduced, and the installation is simplified. The oil mist concentration and temperature signals are continuously collected by each cylinder sensor respectively and transmitted to the oil mist detector main control unit through the RS485 bus to be subjected to logic analysis and operation, when the oil mist concentration or the temperature exceeds a set standard, the controller sends out an early warning signal, and when the oil mist concentration or the temperature is serious, the controller sends out an alarm signal and outputs a shutdown control signal. Meanwhile, the LCD locks and displays the cylinder number, the oil mist concentration or the temperature detection value and the alarm state, wherein the oil mist concentration exceeds the standard.
Further, the prompt control signal comprises a parking electromagnetic valve trigger signal, an external alarm trigger signal, a local fault alarm trigger signal and a temperature alarm trigger signal. These four signals are sent from the controller, isolated from the driver by U6, model ULN2003AD, and then connected to terminal J2 for output by four relays K1-K4, respectively. Then the diesel fuel is connected with an actuator to control. Such as a parking electromagnetic valve, an external alarm (early warning), a local fault alarm, an external alarm (high temperature alarm) and the like. Further, the sensor includes an oil mist separator and an oil mist concentration sensor.
As shown in fig. 10, the power supply unit mainly includes a transformer T1, a voltage-reducing chip U2 selected from LM2596S-ADJ and a voltage-reducing chip U3 selected from MP1470GJ, which are commonly used voltage-regulating chips, a voltage point TP1 led out from the transformer T1 at 24V, a voltage point TP2 led out from the output terminal of the voltage-reducing chip U2 at 12V, a voltage point TP3 led out from the voltage-reducing chip U3 at 5V, and certainly, a chip of type AZ1117D-3.3 may be selected to convert 5V into 3.3V; MP1470GJ is selected to convert 12V voltage into 7V voltage. These different voltages provide power support for the individual power consuming elements of the oil mist detector.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (9)
1. The intelligent digital display oil mist detector is characterized by comprising an oil mist detector main control unit, wherein the oil mist detector main control unit is connected with a sensor control unit; the oil mist detector main control unit comprises a controller, and the controller is connected with a power supply unit and an output control unit; the sensor control unit comprises a second controller, and the second controller is connected with the sensor unit, the analog-to-digital converter and the reference voltage unit; the analog-to-digital converter is also connected with an oil mist detector;
the second controller is used for receiving the output signal of the sensor unit or the conversion signal output by the analog-to-digital converter, comparing the output signal or the conversion signal with the standard signal of the reference voltage unit and outputting a judgment signal;
the controller is used for receiving the judgment signal and outputting a prompt control signal and a corresponding alarm signal;
the power supply unit is used for generating and outputting conversion voltages of a plurality of voltage levels to provide power.
2. The intelligent digital display oil mist detector as claimed in claim 1, wherein the sensor control unit further comprises a second display unit and a second storage unit, the second display unit and the second storage unit being connected to a second control; the second display unit is used for displaying the output signal of the sensor unit.
3. The intelligent digital display oil mist detector as claimed in claim 1, wherein the oil mist detector main control unit further comprises a display unit, a storage unit, a communication interface, an output control unit and an alarm unit; the display unit, the storage unit, the communication interface, the output control unit and the alarm unit are respectively connected with the controller; the alarm unit is used for executing an alarm function of an alarm signal; the output control unit is used for isolating and outputting the prompt control signal.
4. An intelligent digital display oil mist detector as claimed in any one of claims 1 to 3, wherein the controller and the second controller communicate via a CAN bus.
5. The intelligent digital display oil mist detector as claimed in claim 2, wherein the second memory unit comprises a Micro SD card memory and an integrated IC memory.
6. The intelligent digital display oil mist detector as claimed in claim 4, wherein the control unit is connected with an independent crystal oscillator unit, the crystal oscillator unit comprises a first power supply unit U4, a battery backup power supply CF1 and a crystal oscillator chip U14, the crystal oscillator chip U14 is DS1339U-3, a reference voltage terminal VBAT of the crystal oscillator chip U14 is connected with an output terminal of the battery backup power supply CF1, and the first power supply unit U4 is connected with the reference voltage terminal VBAT of the crystal oscillator chip U14 through a diode D6.
7. The intelligent digital display oil mist detector as claimed in claim 3, wherein the communication interface comprises a USB interface and an RS485 communication unit.
8. The intelligent digitally displayed oil mist detector according to claim 3, wherein the prompt control signal comprises a parking solenoid valve trigger signal, an external alarm trigger signal, a local fault alarm trigger signal and a temperature alarm trigger signal.
9. The intelligent digital display oil mist detector as claimed in claim 2, wherein the sensors include an oil mist separator and an oil mist concentration sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922497223.4U CN211318123U (en) | 2019-12-31 | 2019-12-31 | Intelligent digital display oil mist detector |
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| CN201922497223.4U CN211318123U (en) | 2019-12-31 | 2019-12-31 | Intelligent digital display oil mist detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077050A (en) * | 2019-12-31 | 2020-04-28 | 成都潮润科技有限公司 | Intelligent digital display oil mist detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111077050A (en) * | 2019-12-31 | 2020-04-28 | 成都潮润科技有限公司 | Intelligent digital display oil mist detector |
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