CN112666993B - Automatic oiling control system suitable for liquid - Google Patents
Automatic oiling control system suitable for liquid Download PDFInfo
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- CN112666993B CN112666993B CN202011640935.8A CN202011640935A CN112666993B CN 112666993 B CN112666993 B CN 112666993B CN 202011640935 A CN202011640935 A CN 202011640935A CN 112666993 B CN112666993 B CN 112666993B
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- 239000007788 liquid Substances 0.000 title claims abstract description 40
- 239000003921 oil Substances 0.000 claims description 200
- 238000001514 detection method Methods 0.000 claims description 36
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
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- 239000003990 capacitor Substances 0.000 description 2
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Abstract
The invention discloses an automatic oiling control system suitable for liquid, which belongs to the technical field of automatic oiling control and is controlled by dividing an MCU into two paths, wherein the two paths comprise an automatic control mode of a main oil pump and a manual control mode of a standby oil pump and the automatic control mode of the standby oil pump, and the two control modes work in an interlocking state. This automatic oiling control system suitable for liquid is through upgrading traditional secondary circuit into integrated secondary circuit of modularization, can realize standardized production, can improve production efficiency by a wide margin, and the product is more reliable, safer in the course of the work, and furthest has promoted the whole quality of product, simultaneously also very big reduction the fault rate of product, and the whole overall arrangement of product is more normal, more pleasing to the eye, more saves space.
Description
Technical Field
The invention belongs to the technical field of automatic oiling control, and particularly relates to an automatic oiling control system suitable for liquid.
Background
All automatic oiling (liquid) control systems on the market at present simply connect a single relay, a switch, a fuse holder (wire) and a wiring terminal through a cable, and a plurality of problems which are not easy to solve can occur in the actual use process. The main technical disadvantages that occur are:
(1) The fittings are not well connected, the layout is difficult to be regular, the wiring is tedious, and the production efficiency is low;
(2) Once the wiring of the product is finished, if the relay and the corresponding function are required to be added, the relay and the corresponding function are difficult;
(3) The product can not be produced in standardized batch, has poor universality and high production cost, and is not beneficial to establishing industry standards and the like.
Therefore, an automatic oiling control system suitable for liquid is designed, a traditional secondary circuit is updated to a modularized integrated secondary circuit through innovative design, standardized production can be realized, and production efficiency can be greatly improved; the product is more reliable and safer in the working process.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an automatic oiling control system suitable for liquid.
In order to achieve the above purpose, the present invention provides the following technical solutions: the automatic oiling control system suitable for liquid is divided into two paths for control by the MCU, wherein the two paths comprise a control mode of automatic main oil pump and manual main oil pump and a control mode of automatic standby oil pump and manual standby oil pump, and the two control modes work in an interlocking state;
The MCU controls a low-level detection input end IO of the main oil pump, when the low-level oil is in a low-level signal, the system performs buzzer alarm work, outputs an oil adding signal of the main oil pump, starts automatic oil adding, starts to trigger an oil adding signal under the low-level signal, and can be used for indicating that oil is filled up until a liquid level sensor built in the system is closed at a high level and stops triggering under the low-level signal;
when the MCU controls the operation of the main oil pump, the MCU is used for controlling the standby oil pump to be in a standby state, the MCU controls the low-level detection input end IO of the main oil pump, the oil shortage state of the system under a low-level signal is detected, and the MCU unlocks the standby oil pump and is switched to an automatic oiling control mode of the standby oil pump;
when the MCU controls the operation of the backup oil pump, the MCU is used for controlling the main oil pump to be in a standby state, the automatic oiling of the backup oil pump is the same as the oiling of the main oil pump in control mode, the backup oil pump cannot be topped up when the automatic oiling of the backup oil pump is carried out, the oil shortage state of the system under a low-level signal is detected, the MCU is not switched to the control mode of the main oil pump, and the acousto-optic low-level alarm signal is controlled to remind;
When the MCU controls the main oil pump and the backup oil pump to stop automatic operation, a worker can control the main oil pump and the backup oil pump to carry out oiling work in a manual oiling mode.
Further optimizing this technical scheme, automatic oiling control system still includes current transformer, direct current relay, multiposition alternating current contactor, comparator, pilot lamp, multichannel multispeed switch, resistance capacitor, diode, triode to unified control manages above-mentioned equipment by MCU.
According to the technical scheme, the automatic control mode of the main oil pump and the manual control mode of the main oil pump and the automatic control mode of the backup oil pump and the manual control mode of the backup oil pump can trigger the cancellation alarm manually during manual emergency operation, and the cancellation alarm can be restarted when the high-level alarm and the low-level alarm are performed next time.
Further optimizing this technical scheme, the manual function of the automatic, the manual control mode of main oil pump and the automatic, manual control mode of reserve oil pump of main oil pump even is emergent reserve, and the whole all is in the position state of automatic operation of system.
Further optimize this technical scheme, the system is when manual or automatic oil drainage, still does not stop to refuel after the high closure of liquid level sensor is under low level signal, and liquid level sensor high level detects input IO under low level signal, and MCU starts automatic oil drainage function, also can artificially carry out manual oil drainage.
Further optimizing the technical scheme, the main oil pump and the standby oil pump in the two control modes of the system work in an interlocking state when manual oiling is performed.
Compared with the prior art, the invention provides an automatic oiling control system suitable for liquid, which has the following beneficial effects:
1. This automatic oiling control system suitable for liquid is through upgrading traditional secondary circuit into integrated secondary circuit of modularization, can realize standardized production, can improve production efficiency by a wide margin, and the product is more reliable, safer in the course of the work, and furthest has promoted the whole quality of product, simultaneously also very big reduction the fault rate of product, and the whole overall arrangement of product is more normal, more pleasing to the eye, more saves space.
2. This automatic oiling control system suitable for liquid through setting up bee calling organ, can realize reporting to the police and suggestion, and the double-circuit insurance can start reserve under the trouble of oil pump all the way, still can manual emergent start, still is provided with automatic or manual oil draining function under emergency.
Drawings
Fig. 1 is a schematic circuit control diagram of an automatic oiling control system for liquid according to the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
The automatic oiling control system suitable for liquid is divided into two paths for control by the MCU, wherein the two paths comprise a control mode of automatic main oil pump and manual main oil pump and a control mode of automatic standby oil pump and manual standby oil pump, and the two control modes work in an interlocking state;
The MCU controls a low-level detection input end IO of the main oil pump, when the low-level oil is in a low-level signal, the system performs buzzer alarm work, outputs an oil adding signal of the main oil pump, starts automatic oil adding, starts to trigger an oil adding signal under the low-level signal, and can be used for indicating that oil is filled up until a liquid level sensor built in the system is closed at a high level and stops triggering under the low-level signal;
when the MCU controls the operation of the main oil pump, the MCU is used for controlling the standby oil pump to be in a standby state, the MCU controls the low-level detection input end IO of the main oil pump, the oil shortage state of the system under a low-level signal is detected, and the MCU unlocks the standby oil pump and is switched to an automatic oiling control mode of the standby oil pump;
when the MCU controls the operation of the backup oil pump, the MCU is used for controlling the main oil pump to be in a standby state, the automatic oiling of the backup oil pump is the same as the oiling of the main oil pump in control mode, the backup oil pump cannot be topped up when the automatic oiling of the backup oil pump is carried out, the oil shortage state of the system under a low-level signal is detected, the MCU is not switched to the control mode of the main oil pump, and the acousto-optic low-level alarm signal is controlled to remind;
When the MCU controls the main oil pump and the backup oil pump to stop automatic operation, a worker can control the main oil pump and the backup oil pump to carry out oiling work in a manual oiling mode.
Specifically, the automatic oiling control system also comprises a current transformer, a direct current relay, a multi-position alternating current contactor, a comparator, an indicator light, a multi-path multi-gear switch, a resistor capacitor, a diode and a triode, and the MCU is used for uniformly controlling and managing the equipment.
Specifically, the automatic control mode of the main oil pump, the manual control mode of the main oil pump and the automatic control mode of the backup oil pump and the manual control mode of the backup oil pump can manually trigger a cancel alarm during manual emergency operation, and the cancel alarm can be restarted when the high-level alarm and the low-level alarm are performed next time.
Specifically, the manual functions of the automatic control mode of the main oil pump, the manual control mode of the main oil pump and the manual control mode of the backup oil pump are even emergency standby, and the whole system is in an automatic running position state.
Specifically, when the system is used for manually or automatically draining oil, the oiling is not stopped after the high position of the liquid level sensor is closed under the low level signal, the high position of the liquid level sensor detects the input end IO under the low level signal, the MCU starts the automatic oil draining function, and manual oil draining can be performed manually.
Specifically, the main oil pump and the standby oil pump in the two control modes of the system work in an interlocking state during manual oiling.
Embodiment two:
The control method of the automatic oiling control system for liquid in the first embodiment is described with reference to the schematic circuit control diagram of the system shown in fig. 1:
The system power supply presses a power starting switch S6, K6 to start self-locking power supply, the LED alternating current power supply indicates similar lighting, the internal power supply supplies power, the 12V output supplies direct current power, the 12V voltage is reduced by 5V to supply power to the MCU, and the MCU system intelligently detects operation. The normally closed relay K1 and the normally open relay K3 are connected in series, S1 manually or automatically selects and controls the AC contactor KW1 of the main oil pump, and the main oil pump of the user B1 works. The normally closed relay K2 and the normally open relay K4 are connected in series, and the user B2 is used for working the backup oil pump after the S2 manually or automatically selects and controls the AC contactor KW2 of the main oil pump. The normally open relay K5 and the SW3 are combined to form manual or automatic oil drainage. When the working current of the main oil pump is detected, the transformer generates voltage, then the transformer rectifies and filters, a triode Q2 is conducted through a resistor R2 to control a normally closed relay K2 to be disconnected, an alternating current contactor of the backup oil pump is interlocked, and the power supply of the KW2 is disconnected to be used for locking the backup oil pump by the main oil pump. When the working current of the backup oil pump is detected, the transformer generates voltage, then rectifies and filters, a triode Q1 is conducted through a resistor R1 to control a normally closed relay K1 to be disconnected, and an alternating current contactor KW1 of the interlocking main oil pump is powered off and used for locking the main oil pump.
When the oil level of the oil tank reaches a high-level or low-level alarm point, the system gives an alarm and prompts, and the working flow is as follows:
When the oil tank is low in oil (oil shortage), the magnetic stem Huang Guangao is turned on in a closing way, one end of the low-level section KK1 is pulled down to GND, the other end of the low-level section KK1 is pulled down to the input end of the U1B comparator, the "+" input end of the U1B comparator is set to be 2.5V standard, the "+" input end of the U1B comparator is connected to the low-level signal detection input end of the P1.3 end of the MCU through the resistor R27 and the diode D13, the resistor R29 is pulled up to the +5V power supply of the MCU through the port, the low-level section KK1 is turned on in a closing way due to the magnetic stem Huang Guangao of the low-level switch sensor, one end of the low-level section KK1 is pulled down to GND, then the U1B comparator is pulled down to the LS through the diode D11 and the resistors R16 and R15, and the Q7 is controlled to be pulled down to the GND to send a buzzing alarm until the low-level section KK1 of the magnetic stem Huang Guangao is disconnected from the low-level switch sensor. Meanwhile, the low-level signal detection input end of the P1.3 end of the MCU is pulled down, and the manual or automatic selection switches of the main oil pump SW1 and the standby oil pump SW2 are in automatic gear at the moment, so that the system can send out a refueling signal to start automatic refueling until the oil is filled up. The audible and visual alarm is also provided with a low-level indicator lamp to indicate that the low-level signal detection input end at the P1.3 end of the MCU is pulled down, the manual or automatic selection switches of the main oil pump SW1 and the standby oil pump SW2 are in automatic gear at the moment, the P3.5 end of the MCU outputs a low-level signal, the triode Q12 is not conducted through the resistor R25 and does not pull down the control voltage of the triode Q8, and the triode Q8 works because the resistors R21 and R22 provide working voltage to the power supply +12V, so that the LED-low-level indicator lamp is lighted.
When the oil tank is full, the work flow of the automatic oiling control system is as follows:
The high-order section KK2 of the magnetic stem Huang Guangao low-conduction liquid level switch sensor is closed and conducted, one end of the high-order section KK2 is pulled down to GND, one end of the high-order section KK2 is pulled down to the input end of the U1A comparator, the "+" input end of the U1A comparator is set to be 2.5V standard, the "-" input end of the U1A comparator is connected to the high-order signal detection input end of the P1.2 end of the MCU through the resistor R26 and the diode D12, the resistor R30 is pulled up to the +5V power supply of the MCU, and because of the magnetic stem Huang Guangao low-conduction liquid level switch sensor, the high-order section KK2 is closed and conducted, one end of the high-order section KK2 is pulled down to GND, the U1A comparator is pulled down to the GND, and a buzzing alarm is sent until the magnetic stem Huang Guangao low-conduction liquid level switch sensor and the high-order section KK2 falls down to open and releases the alarm. Meanwhile, the high-order signal detection input end of the P1.2 end of the MCU is pulled down, and the manual or automatic selection switches of the NOT main oil pump SW1 and the standby oil pump SW2 are in automatic gear at the moment, so that the system can send out a signal for stopping oiling. The audible and visual alarm is also provided with a high-level indicator lamp to indicate that the low-level signal detection input end at the P1.3 end of the MCU is pulled down, the manual or automatic selection switches of the main oil pump SW1 and the standby oil pump SW2 are in automatic gear at the moment, then the P3.4 end of the MCU outputs a low-level signal, the triode Q10 is not conducted and pulled down through the resistor R24, the control voltage of the triode Q9 is controlled, then the triode Q9 works because the resistors R19 and R20 provide working voltage to the power supply +12V, and the LED-high-level indicator lamp is lighted.
The buzzer can be manually eliminated in the alarm process, and the work flow of the automatic oiling control system is as follows:
The system reasonably uses the controllable silicon, the controllable silicon Q6 is added between the resistors R16 and R15 to pull down the alarm signal, the controllable silicon Q6 is triggered by the reset switch S5 through the reset switch S5 due to the small current of the resistor R16, the IB current of the triode Q7 is pulled down after the controllable silicon Q6 is triggered, the triode is cut off due to the insufficient driving current of the resistor R15, the buzzer alarms until the signals of the diodes D10, D11, D8 and D9 are disconnected, and the normal operation is performed again.
The automatic oiling detection control flow of the automatic oiling control system is as follows:
When the system selects automatic oiling, the selection switches SW1 and SW2 are manually or automatically selected to be in automatic gear, when the oil tank is low in oil (lack of oil), the magnetic stem Huang Guangao is turned on to the low-level switch sensor, the low-level section KK1 is turned on, one end of the magnetic stem is pulled down to GND, the low-level signal detection input end of the MCU system P1.3 is pulled down (the program setting detection low level), the MCU system P3.7 outputs off level, the relay K3 is controlled to be turned on by the conduction triode Q3 through the resistor R3, the alternating-current contactor KW1 is electrified and is closed, the user B1 starts oiling by the main oil pump until the magnetic stem Huang Guangao is turned on to the low-level switch sensor, the high-level section KK2 is turned on, one end of the magnetic stem is pulled down to GND, the high-level signal detection input end of the MCU system P1.3 is pulled down (the program setting detection low level), the MCU system P3.7 stops outputting high level, and the oil pump stops oiling.
When the system selects automatic oiling, the selection switches SW1 and SW2 are manually or automatically selected to be in an automatic gear, when the oil tank is low in oil (lack of oil), the magnetic stem Huang Guangao is turned on by closing the liquid level switch sensor, one end of the low level section KK1 is pulled down to GND, the low level signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), the MCU system P3.7 outputs a separation level, the resistor R3 is used for conducting the triode Q3 to control the relay K3 to be closed, the alternating current contactor KW1 is electrified and is closed, the main oil pump of the user B1 starts oiling, after oiling for 10 minutes (can be set according to the oil tank volume), the low level section KK1 is still closed and turned on, one end of the low level section KK1 is pulled down to GND, the low level signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), at this time, the system considers that the main oil pump circuit is in fault, the standby oil pump is started, the MCU system P1.0 outputs a separation level, the relay K4 is controlled to be closed through the resistor R4, the triode Q4 is turned on, the alternating current contactor Q2 is controlled to control the relay K3 to be closed, the alternating current contactor KW1 is started, the high level signal is pulled down to the high level detection input to the MCU system P2, the high level signal detection input to the MCU system P2 is stopped, the high level signal input to the MCU system is stopped, and the high level is turned off, and the high level signal input to the MCU system is turned off.
The automatic oil drainage is a protection measure designed for excessive oil quantity of an oil tank due to special reasons, and the automatic oil drainage detection control flow of the automatic oil filling control system is as follows:
When the magnetic stem Huang Guangao is turned on to the liquid level switch sensor, the high-level section KK3 is turned on, one end of the high-level section KK3 is pulled down to GND, the high-level signal detection input end of the MCU system P1.4 end is pulled down (the program setting detects low level), the MCU system P1.1 outputs off level, the conduction triode Q5 controls the relay K5 to be turned on through the resistor R5, the user B3 oil drain pump starts oil drain until the magnetic stem Huang Guangao is turned on to the liquid level switch sensor, the high-level section KK3 is turned off, and the oil pump stops oil drain.
The beneficial effects of the invention are as follows:
1. This automatic oiling control system suitable for liquid is through upgrading traditional secondary circuit into integrated secondary circuit of modularization, can realize standardized production, can improve production efficiency by a wide margin, and the product is more reliable, safer in the course of the work, and furthest has promoted the whole quality of product, simultaneously also very big reduction the fault rate of product, and the whole overall arrangement of product is more normal, more pleasing to the eye, more saves space.
2. This automatic oiling control system suitable for liquid through setting up bee calling organ, can realize reporting to the police and suggestion, and the double-circuit insurance can start reserve under the trouble of oil pump all the way, still can manual emergent start, still is provided with automatic or manual oil draining function under emergency.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The related modules involved in the system are all hardware system modules or functional modules in the prior art combining computer software programs or protocols with hardware, and the computer software programs or protocols involved in the functional modules are all known technologies for those skilled in the art and are not improvements of the system; the system is improved in interaction relation or connection relation among the modules, namely, the overall structure of the system is improved, so that the corresponding technical problems to be solved by the system are solved.
It should be noted that, in the above-mentioned embodiments of the search apparatus, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The automatic oiling control system suitable for liquid is divided into two paths for control by an MCU, and is characterized by comprising a control mode of automatic main oil pump (B1) and manual main oil pump (B1) and a control mode of automatic standby oil pump (B2) and manual standby oil pump (B2), wherein the two control modes work in an interlocking state;
The system power supply presses a power supply starting switch (S6), starts self-locking power supply (K6), the alternating current power supply indicator lights are on, the internal power supply supplies power, the 12V output supplies direct current power, the 12V voltage is reduced by 5V to supply power to the MCU, and the MCU system detects operation;
The first normally closed relay (K1) and the first normally open relay (K3) are connected in series, and the alternating current contactor (KW 1) of the main oil pump is manually or automatically selected and controlled, and the main oil pump (B1) works;
The second normally closed relay (K2) and the second normally open relay (K4) are connected in series, and the backup oil pump (B2) works after the backup oil pump alternating current contactor (KW 2) is manually or automatically controlled;
the third normally open relay (K5) and the oil drainage manual switch (SW 3) are combined to form manual or automatic oil drainage;
The method comprises the steps that a first transformer (L1) detects working current of a main oil pump (B1), when the working current of the main oil pump (B1) is detected, the first transformer (L1) generates voltage and then rectifies and filters the voltage, a second triode (Q2) is conducted through a second resistor (R2) to control a second normally-closed relay (K2) to be disconnected, an interlocking backup oil pump alternating-current contactor (KW 2) is interlocked, and the backup oil pump alternating-current contactor (KW 2) is powered off and used for locking the main oil pump (B1) to lock the backup oil pump (B2);
The second transformer (L2) detects the working current of the backup oil pump (B2), when the working current of the backup oil pump (B2) is detected, the second transformer (L2) generates voltage and then rectifies and filters the voltage, the first triode (Q1) is conducted through the first resistor (R1) to control the first normally-closed relay (K1) to be disconnected, the alternating-current contactor (KW 1) of the interlocking main oil pump is powered off, and the alternating-current contactor is used for the backup oil pump (B2) to lock the main oil pump (B1);
The manual functions of the automatic control mode of the main oil pump and the manual control mode of the standby oil pump are even emergency standby, and the whole system is in an automatic running position state;
when the oil level of the oil tank reaches a high-level or low-level alarm point, the system gives an alarm and prompts, and the working flow is as follows:
When the oil tank is low in oil, the magnetic reed pipe high-low conduction liquid level switch sensor is closed and conducted, one end of the magnetic reed pipe low-level switch (KK 1) is pulled down to GND, the other end of the magnetic reed pipe low-level switch is pulled down to the "-" input end of the second comparator (U1B), the "+" input end of the second comparator (U1B) is set to be 2.5V standard, the "-" input end of the second comparator (U1B) is connected with the low-level signal detection input end of the P1.3 end of the MCU through the second seven resistor (R27), the first three diode (D13), the port is pulled up to the +5V power supply of the MCU through the second nine resistor (R29), and the low-level switch (KK 1) is closed and conducted, then the high level of the second comparator (U1B) is pulled down to GND through the first one-to the first six resistor (R16), the fifth resistor (R15) controls the seventh-level transistor (Q7) to pull down the sound-light buzzer switch (LS), and the alarm reed pipe high-level alarm switch (KK 1) is released;
Meanwhile, the low-level signal detection input end of the P1.3 end of the MCU is pulled down, and the main oil pump (B1), the standby oil pump (B2), the main oil pump manual switch (SW 1) and the auxiliary oil pump manual switch (SW 2) are all in automatic gear at the moment, and send out a refueling signal to start automatic refueling until the oil is filled up;
The audible and visual alarm is performed, meanwhile, a low-level indicator lamp indicates that a low-level signal detection input end at the P1.3 end of the MCU is pulled down, the main oil pump (B1), the standby oil pump (B2), the main oil pump manual switch (SW 1) and the auxiliary oil pump manual switch (SW 2) are in automatic gear at the moment, then the MCUP 3.5.5 end outputs a low-level signal, the first diode (Q12) is not conducted and does not pull down the control voltage of the eighth diode (Q8) through a second five resistor (R25), and then the eighth diode (Q8) is provided with a second resistor (R21), the second resistor (R22) provides working voltage to a power supply +12V for working, and the low-level indicator lamp is lightened;
when the oil tank is full, the work flow of the automatic oiling control system is as follows:
A first high-level section switch (KK 2) of the magnetic reed pipe high-low conduction liquid level switch sensor is closed and conducted, one end of the first high-level section switch is pulled down to GND, one end of the first high-level section switch is pulled down to the "-" input end of a first comparator (U1A), the "+" input end of the first comparator (U1A) is set to be 2.5V standard, the "-" input end of the first comparator (U1A) is connected with a high-level signal detection input end of the P1.2 end of the MCU through a second six resistor (R26) and a first diode (D12), the port pulls up a third zero resistor (R30) to a +5V power supply of the MCU, and as the magnetic reed pipe high-low conduction liquid level switch sensor, the first high-level section switch (KK 2) is closed and one end of the first comparator (U1A) is pulled down to GND, the first high-level alarm (LS) is pulled down to the first high-level through the first six resistor (R16), the fifth resistor (R15) controls a seventh transistor (Q7) to pull down an acousto-optic alarm (LS) until the first reed pipe high-level switch sends alarm signal to the high-level alarm level switch to turn off, and the magnetic reed pipe high-level switch is pulled down to turn off; meanwhile, the high-order signal detection input end of the P1.2 end of the MCU is pulled down, and when the main oil pump (B1), the standby oil pump (B2), the main oil pump manual switch (SW 1) and the auxiliary oil pump manual switch (SW 2) are in automatic gear at the moment, a refueling stopping signal is sent;
The audible and visual alarm is performed, meanwhile, a high-level indicator lamp indicates that a low-level signal detection input end at the P1.3 end of the MCU is pulled down, a main oil pump (B1), a standby oil pump (B2), a main oil pump manual switch (SW 1) and a secondary oil pump manual switch (SW 2) are in automatic gears at the moment, then a MCUP 3.4.4 end outputs a low-level signal, a first zero triode (Q10) is not conducted and does not pull down the control voltage of a ninth triode (Q9) through a second four resistor (R24), then the ninth triode (Q9) is connected with the first nine resistor (R19), the second zero resistor (R20) is connected to a power supply +12V to provide working voltage for working, and the high-level alarm lamp is lightened;
the buzzer is eliminated manually in the alarm process, and the work flow of the automatic oiling control system is as follows:
The controllable silicon (Q6) is added between the first sixth resistor (R16) and the first fifth resistor (R15) to pull down the locking alarm signal, the controllable silicon (Q6) pulls down the IB current of the seventh transistor (Q7) after being triggered by the first eighth resistor (R18) through the reset switch (S5) because the resistance value of the first sixth resistor (R16) is small and the current is large, the seventh transistor (Q7) is in cut-off operation because the resistance value of the first fifth resistor (R15) is large, the buzzer alarms until the first zero diode (D10), the first one-to-one diode (D11), the eighth diode (D8) and the ninth diode (D9) are disconnected, and the alarm device operates normally again;
the automatic oiling detection control flow of the automatic oiling control system is as follows:
When the system selects automatic oiling, a main oil pump manual switch (SW 1) and a secondary oil pump manual switch (SW 2) are both in an automatic gear, when the oil tank is low in oil, a magnetic reed pipe high-low conduction liquid level switch sensor is closed and conducted, one end of the magnetic reed pipe high-low conduction liquid level switch sensor is pulled down to GND, a low-level signal detection input end of an MCU system P1.3 end is pulled down, the MCU system P3.7 outputs a high level, a third resistor (R3) is conducted, a third triode (Q3) is conducted to control a first normally open relay (K3) to be closed, a main oil pump (B1) starts oiling until the magnetic reed pipe high-low conduction liquid level switch sensor is closed and conducted, one end of the first high-level switch (KK 2) is pulled down to GND, a high-level signal detection input end of the MCU system P1.3 end is pulled down, the MCU system P3.7 stops outputting a high level, and the main oil pump (B1) stops oiling;
when the system selects automatic oiling, a main oil pump manual switch (SW 1) and a secondary oil pump manual switch (SW 2) are both in an automatic gear, when oil is less in an oil tank, a magnetic reed pipe high-low conduction liquid level switch sensor and a low-level section switch (KK 1) are closed and conducted, one end of the magnetic reed pipe high-low conduction liquid level switch is pulled down to GND, a low-level signal detection input end of a MCU system P1.3 end is pulled down, the MCU system P3.7 outputs a high level, a third triode (Q3) is conducted to control a first normally open relay (K3) to be closed through a third resistor (R3), a main oil pump alternating current contactor (KW 1) is electrified and attracted, a main oil pump (B1) starts oiling, after oiling is carried out for 10 minutes, the low-level switch (KK 1) is still always closed and one end of the magnetic reed pipe is pulled down to GND, at the time, the MCU system P1.3 end of the low-level signal detection input end is pulled down, at the moment, the MCU system P1.0 outputs a high level, the fourth triode (Q3) is conducted to control the high-level signal of the MCU system P4, the high-level switch (KW 2) is pulled down to stop the high-level switch (KW 2), the high-level switch (KK 2) is pulled down to control the high-level switch (K2) to be closed, the high-level switch (KW 2) is pulled down to stop the magnetic reed pipe) from being turned on, and the high-level switch (KK 2) is turned on, and the high-low level is turned on to be turned off to be turned on;
the automatic oil drainage detection control flow of the automatic oil filling control system is as follows:
when the magnetic reed pipe is turned on and turned off, the second high-level section switch (KK 3) is turned on, one end of the second high-level section switch is pulled down to GND, the high-level signal detection input end of the P1.4 end of the MCU system is pulled down, the MCU system P1.1 outputs high level, the fifth triode (Q5) is turned on to control the third normally open relay (K5) to be turned on through the fifth resistor (R5), the oil drain pump (B3) starts to drain oil until the magnetic reed pipe is turned on and turned off, the oil drain pump (B3) stops to drain oil, the system does not stop oiling after the high level of the liquid level sensor is turned on under a low level signal when manual or automatic oil drain is performed, the high level of the liquid level sensor detects the input end IO under the low level signal, the MCU starts an automatic oil drain function, and manual oil drain can be performed manually.
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| CN103267043A (en) * | 2013-06-07 | 2013-08-28 | 宁波创力液压机械制造有限公司 | Integrated automatic alarm device of hydraulic system |
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