CN110333674A - A kind of lubricating system Closed loop Control and embodiment - Google Patents
A kind of lubricating system Closed loop Control and embodiment Download PDFInfo
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- CN110333674A CN110333674A CN201910559589.1A CN201910559589A CN110333674A CN 110333674 A CN110333674 A CN 110333674A CN 201910559589 A CN201910559589 A CN 201910559589A CN 110333674 A CN110333674 A CN 110333674A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses a kind of lubricating system Closed loop Control and embodiments, the Closed loop Control uses disclosed J1939 agreement, using the structure type that can be cut, both oil supply system can be independently accessed as detection device, it can construct two layers again or the closed loop sensor-based system of multilayered structure, if the sensor-based system of typical three-decker includes that control panel, intermediate plate and monitoring board composition, control panel are connected by bus with monitoring board with intermediate plate.For grease after entering system, detecting element detects grease, determines whether lubricant grease normally injects lubricant housings by the comparison to oiling state and non-oiling state, the information that transfer element will test is transmitted to system.
Description
Technical field
The present invention relates to grease circulating technology field, in particular to a kind of lubricating system Closed loop Control and embodiment party
Case.
Background technique
Currently, lubricating system especially centralized lubricating system usually carries out circulation conveying to dispenser unit, pass through distribution
The working condition of device unit judges the oiling state of lubricant housings indirectly, can not end concrete position to oil addition carry out shape
State detection, more lubricating system of counting for lubrication, maintenance personnel can not fast and accurately determine which specific lubricant housings
There are problems.
In view of the above circumstances, how to allow each lubricant housings of lubricating system can accurate feedback filling information, prompt dimension
Shield personnel find trouble location as early as possible and are particularly important, and are those skilled in the art's technical problems urgently to be resolved.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and provide a kind of lubricating system Closed loop Control and reality
Scheme is applied, the technology and embodiment are suitable for lubrication and control that lubricating system is particularly suitable for centralized lubricating system.
For achieving the above object, the present invention adopts the following technical scheme that realization:
A kind of lubricating system Closed loop Control and embodiment, the Closed loop Control use disclosed J1939 agreement,
Using the structure type that can be cut, oil supply system can be not only independently accessed as detection device, but also can have been constructed two layers or more
The closed loop sensor-based system of layer structure, the sensor-based system of such as typical three-decker include control panel, intermediate plate and monitoring board composition, control
Making sheet is connected by bus with monitoring board with intermediate plate.
The oil supply system is controlled by Lubricating pump station, distributor, pipeline, pump station controller, central controller, branch
The composition such as device, lubricating grease displacement sensor, connector and attachment；According to the setting program of pump station controller, Lubricating pump station operation will
Grease pump is seen off；Lubricating grease enters distributor by pipeline, and lubricating grease distribution is completed in distributor；Lubricating grease from point
Orchestration is output and then enter oil distributing pipe road, enters lubricant housings by lubricating grease displacement sensor.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the monitoring board setting
In lubricating grease displacement sensor shell, when lubricating grease passes through sensor, monitoring board detects the movement of lubricating grease, judges to moisten
Consistent lubricant can smoothly enter into lubricant housings, be sent to intermediate plate by the information that CAN bus will test, and intermediate plate is by each sensor
Control panel will send information to by CAN bus after information taken, control panel will pass through CAN after the information taken of each intermediate plate
Bus will send information to pump station controller and show on a display screen, or will send information to host computer by CAN bus
And it shows on a display screen.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: built in the control panel
In in central controller, intermediate plate is built in branch's controller, monitoring board is built in sensor, and control panel and intermediate plate are logical
Bus is crossed to be connected with monitoring board；Control panel provides 12 volts or 24 volts of power supply boards, and indicator light, the finger are equipped on power supply board
Show that lamp is LED light, is sealed in metal shell, is communicated using J1939 agreement, by multiple bus and pump station controller
The display screen of installation is connected, and intermediate plate is the intermediate treatment part for connecting control panel and monitoring board, using based on J1939 agreement
CAN bus structure is completed to upload monitoring end signal.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the lubricating grease displacement
Sensor uses infrared or optical system, real-time detection lubricating grease mobility status, and will test signal and be transferred to internal MCU control
Device processed after controller receives and processes, is sent into bus using interruption or polling mode, according to J1939 agreement, and in display screen
Upper real-time display monitors situation.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: lubricating grease displacement sensor
It is detected using domain Ramam effect, light source issues optical path and sequentially passes through dispersion system, reception system, information processing system；Light
Source uses convex lens using white or red, laser light source, dispersion system, and convex lens radius is according to imaging formula:
U expression thing is away from v indicates image distance, and f indicates focal length in formula；
The laggard row interpolation operation of data is acquired, dispersion data are handled, the equation of use is as follows:
It obtains being worth laggard line frequency transformation FFT or fractional order FFT operation, is transformed into frequency domain, obtains transformed score
Rank domain matrix, here comprising order variation and transformation results, order variation describes the range of signal frequency variation, transformation results
What is obtained is the size of energy, by setting respective threshold value matrix Xp(u0), determination frequency change degree changes feelings according to frequency
Condition judges testing result.Specific method is the Fourier Transform of Fractional Order of signal x (t) is defined as:
Wherein: p=2 α/π is transformation order, and α is rotation angle, Fp[] is the operator notation of transformation, Kp(t, u) is
Transformation kernel:
Fourier Transform of Fractional Order is inversely transformed into:
The definition of Fourier Transform of Fractional Order can be regarded as the decomposition of Chirp base, as transformation order continuously increases from 0
It grows to 1 and shows signal and all features to frequency domain are changed stepwise from time domain；
Initial value X is set with corresponding after the calculated result of frequency change degreep(u0) compare, using two methods, one is sides
Journey is as follows:
p1(x)=Xp(u)-Xp(u0) (4)
p2(x)=Xp(u)/Xp(u0) (5)
p1(x) give variation as a result, p2(x) speed of frequency variation is given；Obtain transformed frequency domain value.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: lubricating grease displacement sensor
Internal MCU controller is STM32 micro-control processor, is connected respectively with power module, Raman probe and the CAN bus of transmission
It connects；The power module DC power supply is STM32 micro-control processor, Raman probe；The light source of the Raman probe is LED
Lamp source front end is convex lens, is provided with resistance R3, R4, R5 and ADC in circuit；The LED light source and photosensitive testing principle
Circuit is, after the LED light is connected with resistance R5, power supply, other end ground connection are accessed in one end；Described；The resistance R3,
One end connects to power supply after R4 series connection, and other end ground connection, one end of ADC is connected in parallel between resistance R3, R4.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the inspection of consistent lubricant displacement sensor
Survey CAN communication circuit, including SN65HVD230DR receiver, 5 plug connector of Header；The SN65HVD230DR receiver
8 ends endpoint 1-4 are shared to connect with CAN reception pin TX1-RX4；5,8 endpoints of the SN65HVD230DR are connected to respectively
Restore fuse and ground connection；6,7 endpoints of the SN65HVD230DR connect the terminal 3,2 of 5 plug connector of Header respectively；Institute
The terminal 1,4,5 for 5 plug connector of Header stated connects 5V direct current, ground connection and I/O device respectively.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the intermediate plate controls CAN
Communicating circuit, including SN65HVD230DR receiver, 4 plug connector of Header and resistance R20, SN65HVD230DR receiver are total
There are 8 ends endpoint 1-4 to receive pin TX1-RXI4 with CAN to connect；5,8 endpoints of the SN65HVD230DR are connected to extensive respectively
Double insurance silk and ground connection；6,7 endpoints of the SN65HVD230DR connect the terminal 3,2 of 4 plug connector of Header respectively；It is described
4 plug connector of Header terminal 1,4 connect respectively 5V direct current, ground connection；The resistor coupled in parallel SN65HVD230DR 6,
In the wiring of 7 endpoints, prevent to be 120 Ω.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: control panel CAN communication electricity
Road, including TJA1050 transceiver, 4 plug connector of Header, capacitor C13, C12, resistance R11, R12, R13, R14, R22, R23,
R24, common mode inductance patch P2, CAN0；The TJA1050 transceiver shares 8 endpoints, and endpoint 1 is connect with CAN TX1, electricity
It is in parallel with endpoint 1 to hinder the one end R24, the other end accesses 5V DC power supply；Endpoint 2 is grounded, and endpoint 3 is connect with 5V DC power supply, is held
Point 4 is grounded after connecting with resistance R22 and R23；CAN RX1 wiring point is reserved between the resistance R22 and R23；It is described
The endpoint 6,7,8 of TJA1050 transceiver connect respectively with one end of resistance R12, R13, R14, endpoint 5 and self-recovery fuse
Connection；The other end of described resistance R12, R13 are connect with common mode inductance patch P2 contact 2,1 respectively, common mode inductance patch P2
3,4 contacts connect respectively with 2,1 terminal of CAN0；Access resistance R11 in parallel between 2,1 terminal of the CAN0；Described
The other end of resistance R14 is grounded；One end ground connection other end of the capacitor C13 is in parallel with resistance R13；The capacitor C12
One end it is in parallel with resistance R12, the other end ground connection.
For grease after entering system, detecting element detects grease, by oiling state and non-oiling state
Comparison determines whether lubricant grease normally injects lubricant housings, and the information that transfer element will test is transmitted to system.
Detailed description of the invention
Fig. 1 is control principle drawing of the invention.
1. 11. oil distributing pipe road of Lubricating pump station 5. pipeline, 10. distributor, 20. consistent lubricant displacement sensor, 21. branch controls
30. 45. central controller of connector 31.CAN bus of device, 50. pump station controller.
Fig. 2 is sensor of the invention control principle drawing.
Fig. 3 is logical relation wire figure of the invention.
Fig. 4 is sensor of the invention logical relation wire figure.
Fig. 5 is sensor of the invention photosensitive detection circuit figure.
Fig. 6 is sensor of the invention CAN communication circuit figure.
Fig. 7 is intermediate plate CAN communication circuit figure of the invention.
Fig. 8 is control panel CAN communication circuit figure of the invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
A kind of lubricating system Closed loop Control and embodiment, the Closed loop Control use disclosed J1939 agreement,
Using the structure type that can be cut, oil supply system can be not only independently accessed as detection device, but also can have been constructed two layers or more
The closed loop sensor-based system of layer structure, the sensor-based system of such as typical three-decker include control panel, intermediate plate and monitoring board composition, control
Making sheet is connected by bus with monitoring board with intermediate plate.
The oil supply system is controlled by Lubricating pump station, distributor, pipeline, pump station controller, central controller, branch
The composition such as device, lubricating grease displacement sensor, connector and attachment；According to the setting program of pump station controller, Lubricating pump station operation will
Grease pump is seen off；Lubricating grease enters distributor by pipeline, and lubricating grease distribution is completed in distributor；Lubricating grease from point
Orchestration is output and then enter oil distributing pipe road, enters lubricant housings by lubricating grease displacement sensor.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the monitoring board setting
In lubricating grease displacement sensor shell, when lubricating grease passes through sensor, monitoring board detects the movement of lubricating grease, judges to moisten
Consistent lubricant can smoothly enter into lubricant housings, be sent to intermediate plate by the information that CAN bus will test, and intermediate plate is by each sensor
Control panel will send information to by CAN bus after information taken, control panel will pass through CAN after the information taken of each intermediate plate
Bus will send information to pump station controller and show on a display screen, or will send information to host computer by CAN bus
And it shows on a display screen.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: built in the control panel
In in central controller, intermediate plate is built in branch's controller, monitoring board is built in sensor, and control panel and intermediate plate are logical
Bus is crossed to be connected with monitoring board；Control panel provides 12 volts or 24 volts of power supply boards, and indicator light, the finger are equipped on power supply board
Show that lamp is LED light, is sealed in metal shell, is communicated using J1939 agreement, by multiple bus and pump station controller
The display screen of installation is connected, and intermediate plate is the intermediate treatment part for connecting control panel and monitoring board, using based on J1939 agreement
CAN bus structure is completed to upload monitoring end signal.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the lubricating grease displacement
Sensor uses infrared or optical system, real-time detection lubricating grease mobility status, and will test signal and be transferred to internal MCU control
Device processed after controller receives and processes, is sent into bus using interruption or polling mode, according to J1939 agreement, and in display screen
Upper real-time display monitors situation.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: lubricating grease displacement sensor
It is detected using domain Ramam effect, light source issues optical path and sequentially passes through dispersion system, reception system, information processing system；Light
Source uses convex lens using white or red, laser light source, dispersion system, and convex lens radius is according to imaging formula:
U expression thing is away from v indicates image distance, and f indicates focal length in formula；
The laggard row interpolation operation of data is acquired, dispersion data are handled, the equation of use is as follows:
It obtains being worth laggard line frequency transformation FFT or fractional order FFT operation, is transformed into frequency domain, obtains transformed score
Rank domain matrix, here comprising order variation and transformation results, order variation describes the range of signal frequency variation, transformation results
What is obtained is the size of energy, by setting respective threshold value matrix Xp(u0), determination frequency change degree changes feelings according to frequency
Condition judges testing result.Specific method is the Fourier Transform of Fractional Order of signal x (t) is defined as:
Wherein: p=2 α/π is transformation order, and α is rotation angle, Fp[] is the operator notation of transformation, Kp(t, u) is
Transformation kernel:
Fourier Transform of Fractional Order is inversely transformed into:
The definition of Fourier Transform of Fractional Order can be regarded as the decomposition of Chirp base, as transformation order continuously increases from 0
It grows to 1 and shows signal and all features to frequency domain are changed stepwise from time domain；
Initial value X is set with corresponding after the calculated result of frequency change degreep(u0) compare, using two methods, one is sides
Journey is as follows:
p1(x)=Xp(u)-Xp(u0) (4)
p2(x)=Xp(u)/Xp(u0) (5)
p1(x) give variation as a result, p2(x) speed of frequency variation is given；Obtain transformed frequency domain value.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: lubricating grease displacement sensor
Internal MCU controller is STM32 micro-control processor, is connected respectively with power module, Raman probe and the CAN bus of transmission
It connects；The power module DC power supply is STM32 micro-control processor, Raman probe；The light source of the Raman probe is LED
Lamp source front end is convex lens, is provided with resistance R3, R4, R5 and ADC in circuit；The LED light source and photosensitive testing principle
Circuit is, after the LED light is connected with resistance R5, power supply, other end ground connection are accessed in one end；Described；The resistance R3,
One end connects to power supply after R4 series connection, and other end ground connection, one end of ADC is connected in parallel between resistance R3, R4.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the inspection of consistent lubricant displacement sensor
Survey CAN communication circuit, including SN65HVD230DR receiver, 5 plug connector of Header；The SN65HVD230DR receiver
8 ends endpoint 1-4 are shared to connect with CAN reception pin TX1-RX4；5,8 endpoints of the SN65HVD230DR are connected to respectively
Restore fuse and ground connection；6,7 endpoints of the SN65HVD230DR connect the terminal 3,2 of 5 plug connector of Header respectively；Institute
The terminal 1,4,5 for 5 plug connector of Header stated connects 5V direct current, ground connection and I/O device respectively.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: the intermediate plate controls CAN
Communicating circuit, including SN65HVD230DR receiver, 4 plug connector of Header and resistance R20, SN65HVD230DR receiver are total
There are 8 ends endpoint 1-4 to receive pin TX1-RXI4 with CAN to connect；5,8 endpoints of the SN65HVD230DR are connected to extensive respectively
Double insurance silk and ground connection；6,7 endpoints of the SN65HVD230DR connect the terminal 3,2 of 4 plug connector of Header respectively；It is described
4 plug connector of Header terminal 1,4 connect respectively 5V direct current, ground connection；The resistor coupled in parallel SN65HVD230DR 6,
In the wiring of 7 endpoints, prevent to be 120 Ω.
A kind of lubricating system Closed loop Control and embodiment above-mentioned, it is characterised in that: control panel CAN communication electricity
Road, including TJA1050 transceiver, 4 plug connector of Header, capacitor C13, C12, resistance R11, R12, R13, R14, R22, R23,
R24, common mode inductance patch P2, CAN0；The TJA1050 transceiver shares 8 endpoints, and endpoint 1 is connect with CAN TX1, electricity
It is in parallel with endpoint 1 to hinder the one end R24, the other end accesses 5V DC power supply；Endpoint 2 is grounded, and endpoint 3 is connect with 5V DC power supply, is held
Point 4 is grounded after connecting with resistance R22 and R23；CAN RX1 wiring point is reserved between the resistance R22 and R23；It is described
The endpoint 6,7,8 of TJA1050 transceiver connect respectively with one end of resistance R12, R13, R14, endpoint 5 and self-recovery fuse
Connection；The other end of described resistance R12, R13 are connect with common mode inductance patch P2 contact 2,1 respectively, common mode inductance patch P2
3,4 contacts connect respectively with 2,1 terminal of CAN0；Access resistance R11 in parallel between 2,1 terminal of the CAN0；Described
The other end of resistance R14 is grounded；One end ground connection other end of the capacitor C13 is in parallel with resistance R13；The capacitor C12
One end it is in parallel with resistance R12, the other end ground connection.
Above-mentioned elaborated to a kind of oil addition condition detecting system of the present invention, specific case used herein
Principle and implementation of the present invention are described, the above embodiments are only used to help understand side of the invention
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
In protection scope.
Claims (8)
1. a kind of lubricating system Closed loop Control and embodiment, which uses disclosed J1939 agreement, adopts
With the structure type that can be cut, oil supply system can be not only independently accessed as detection device, but also can construct two layers or multilayer
The closed loop sensor-based system of structure, it is characterised in that: the sensor-based system of three-decker includes control panel, intermediate plate and monitoring board group
At control panel is connected by bus with monitoring board with intermediate plate；The oil supply system is by Lubricating pump station, distributor, pipeline, pump
The composition such as station control, central controller, branch's controller, lubricating grease displacement sensor, connector and attachment；It is controlled according to pumping plant
The setting program of device, Lubricating pump station operation, grease pump is seen off；Lubricating grease enters distributor by pipeline, and is distributing
Lubricating grease distribution is completed in device；Lubricating grease is output and then enter oil distributing pipe road from distributor, enters by lubricating grease displacement sensor
Lubricant housings.
2. a kind of lubricating system Closed loop Control according to claim 1 and embodiment, it is characterised in that: described
Monitoring board is arranged in lubricating grease displacement sensor shell, and when lubricating grease passes through sensor, monitoring board detects lubricating grease
It is mobile, judge that lubricating grease can smoothly enter into lubricant housings, intermediate plate is sent to by the information that CAN bus will test, intermediate plate will
Control panel will send information to by CAN bus after the information taken of each sensor, control panel is by the information of each intermediate plate
Pump station controller will send information to by CAN bus after collecting and show on a display screen, or pass through CAN bus for information
It is sent to host computer and shows on a display screen.
3. a kind of lubricating system Closed loop Control according to claim 1 and embodiment, it is characterised in that: described
Control panel is built in central controller, and intermediate plate is built in branch's controller, monitoring board is built in sensor, control panel
It is connected by bus with monitoring board with intermediate plate；Control panel provides 12 volts or 24 volts of power supply boards, and finger is equipped on power supply board
Show lamp, the indicator light is LED light, be sealed in metal shell, communicated using J1939 agreement, by multiple bus and
The display screen installed in pump station controller is connected, and intermediate plate is the intermediate treatment part for connecting control panel and monitoring board, using base
In the CAN bus structure of J1939 agreement, complete to upload monitoring end signal.
4. a kind of lubricating system Closed loop Control according to claim 2 and embodiment, it is characterised in that: described
Lubricating grease displacement sensor uses infrared or optical system, real-time detection lubricating grease mobility status, and will test signal transmission
To internal MCU controller, after controller receives and processes, bus is sent into using interruption or polling mode, is assisted according to J1939
View, and real-time display monitors situation on a display screen；Lubricating grease displacement sensor is detected using domain Ramam effect, light source hair
Optical path sequentially passes through dispersion system, reception system, information processing system out；Light source is using white or red, laser light source, color
The system of dissipating uses convex lens, and convex lens radius is according to imaging formula:
U expression thing is away from v indicates image distance, and f indicates focal length in formula；
The laggard row interpolation operation of data is acquired, dispersion data are handled, the equation of use is as follows:
It obtains being worth laggard line frequency transformation FFT or fractional order FFT operation, is transformed into frequency domain, obtains transformed fractional order domain
Matrix, here comprising order variation and transformation results, order variation describes the range of signal frequency variation, and transformation results obtain
Be energy size, pass through setting respective threshold value matrix Xp(u0), determination frequency change degree is sentenced according to frequency situation of change
Disconnected testing result.Specific method is the Fourier Transform of Fractional Order of signal x (t) is defined as:
Wherein: p=2 α/π is transformation order, and α is rotation angle, Fp[] is the operator notation of transformation, Kp(t, u) is transformation
Core:
Fourier Transform of Fractional Order is inversely transformed into:
The definition of Fourier Transform of Fractional Order can be regarded as the decomposition of Chirp base, as transformation order continuously rises to from 0
1 and show signal and all features to frequency domain be changed stepwise from time domain；
Initial value X is set with corresponding after the calculated result of frequency change degreep(u0) compare, using two methods, one is equations such as
Under:
p1(x)=Xp(u)-Xp(u0) (4)
p2(x)=Xp(u)/Xp(u0) (5)
Give variation as a result, p2(x) speed of frequency variation is given；Obtain transformed frequency domain value.
5. a kind of lubricating system Closed loop Control according to claim 1 and embodiment, it is characterised in that: lubricating grease
MCU controller inside displacement sensor is STM32 micro-control processor, respectively with power module, Raman probe and transmission
CAN bus connection；The power module DC power supply is STM32 micro-control processor, Raman probe；The Raman probe
Light source is that LED light source front end is convex lens, is provided with resistance R3, R4, R5 and ADC in circuit；The LED light source with it is photosensitive
Testing principle circuit is, after the LED light is connected with resistance R5, power supply, other end ground connection are accessed in one end；Described；It is described
Resistance R3, R4 series connection after one end connect to power supply, the other end ground connection, one end of ADC is connected in parallel between resistance R3, R4.
6. a kind of lubricating system Closed loop Control according to claim 5 and embodiment, it is characterised in that: consistent lubricant position
Displacement sensor detects CAN communication circuit, including SN65HVD230DR receiver, 5 plug connector of Header；Described
SN65HVD230DR receiver shares 8 ends endpoint 1-4 and connect with CAN reception pin TX1-RX4；The SN65HVD230DR
5,8 endpoints connect self-recovery fuse and ground connection respectively；6,7 endpoints of the SN65HVD230DR meet Header 5 respectively and insert
The terminal 3,2 of fitting；The terminal 1,4,5 of 5 plug connector of Header connects 5V direct current, ground connection and I/O device respectively.
7. a kind of lubricating system Closed loop Control according to claim 1 and embodiment, it is characterised in that: in described
Between plate control CAN communication circuit, including SN65HVD230DR receiver, 4 plug connector of Header and resistance R20,
SN65HVD230DR receiver shares 8 ends endpoint 1-4 and connect with CAN reception pin TX1-RXI4；Described
5,8 endpoints of SN65HVD230DR connect self-recovery fuse and ground connection respectively；6,7 endpoints of the SN65HVD230DR are distinguished
Connect the terminal 3,2 of 4 plug connector of Header；The terminal 1,4 of 4 plug connector of Header connects 5V direct current, ground connection respectively；Institute
The resistor coupled in parallel stated prevents to be 120 Ω in the wiring of 6,7 endpoints of SN65HVD230DR.
8. a kind of lubricating system Closed loop Control according to claim 1 and embodiment, it is characterised in that: control panel
CAN communication circuit, including TJA1050 transceiver, 4 plug connector of Header, capacitor C13, C12, resistance R11, R12, R13, R14,
R22, R23, R24, common mode inductance patch P2, CAN0；The TJA1050 transceiver shares 8 endpoints, endpoint 1 and CAN TX1
Connection, the one end resistance R24 is in parallel with endpoint 1, and the other end accesses 5V DC power supply；Endpoint 2 is grounded, endpoint 3 and 5V DC power supply
Connection, endpoint 4 are grounded after connecting with resistance R22 and R23；CAN RX1 wiring is reserved between the resistance R22 and R23
Point；The endpoint 6,7,8 of the TJA1050 transceiver is connected with one end of resistance R12, R13, R14 respectively, endpoint 5 with from extensive
The connection of double insurance silk；The other end of described resistance R12, R13 are connect with common mode inductance patch P2 contact 2,1 respectively, common mode electricity
3,4 contacts of sense patch P2 are connect with 2,1 terminal of CAN0 respectively；Access resistance in parallel between 2,1 terminal of the CAN0
R11；The other end of the resistance R14 is grounded；One end ground connection other end of the capacitor C13 is in parallel with resistance R13；It is described
Capacitor C12 one end it is in parallel with resistance R12, the other end ground connection.
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