CN218777410U - Automatic control device for switching main and auxiliary oil tanks - Google Patents
Automatic control device for switching main and auxiliary oil tanks Download PDFInfo
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- CN218777410U CN218777410U CN202223172901.8U CN202223172901U CN218777410U CN 218777410 U CN218777410 U CN 218777410U CN 202223172901 U CN202223172901 U CN 202223172901U CN 218777410 U CN218777410 U CN 218777410U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a main and auxiliary oil tank switching automatic control device, which comprises a singlechip, wherein the input end of the singlechip is electrically connected with a power circuit, an oil mass detection circuit and a current detection circuit; the output end of the singlechip is electrically connected with an output driving circuit; the device solves the problems that the switching of the main and auxiliary oil tanks in the prior art depends on manual work, the oil quantity CAN not be early-warned, electric shock burning is easily caused due to the current problem during switching, and fault positioning CAN not be carried out; the automatic switching control device is also compatible with a manual control mode, a driver is allowed to manually switch the main and auxiliary oil tanks, and the automatic switching mode and the manual switching mode cannot interfere with each other.
Description
Technical Field
The utility model belongs to the technical field of the vehicle oil tank valve switches, concretely relates to main and auxiliary fuel tank switches automatic control device.
Background
The existing main and auxiliary oil tanks are switched by manually judging the oil quantity of the oil tank through an oil quantity meter by a driver, and when the oil quantity is too low, a change-over switch of the main and auxiliary oil tanks is switched by toggling an oil tank change-over switch to control a change-over valve of the main and auxiliary oil tanks. The existing main and auxiliary oil tanks have the disadvantages that: 1, switching of a main oil tank and an auxiliary oil tank is judged by a driver, and if the oil quantity of the oil tanks is too low and the switching is not carried out in time, an engine is flamed out; 2, the oil meter of the combination meter only displays the oil quantity of the currently used oil tank, and if the oil quantities of the main oil tank and the auxiliary oil tank are too low, warning cannot be simultaneously performed; 3, when the oil tank change-over switch is used for controlling the main and auxiliary oil tank change-over valves, the contact of the oil tank change-over switch is ablated due to the fact that large current is generated when the main and auxiliary oil tank change-over valves are started, and the service life of the oil tank change-over switch is influenced; 4, when the main and auxiliary oil tank conversion valve is in fault, the alarm cannot be prompted, and the fault position is quickly positioned; therefore, it is necessary to design an automatic control device for switching the main and auxiliary fuel tanks to solve the above problems.
Disclosure of Invention
The utility model aims to solve the technical problem that a main and auxiliary oil tank switches automatic control device is provided, the device has solved prior art's main and auxiliary oil tank and has switched the dependence manual work, and can't be to the oil mass early warning, because the electric current problem causes the electric shock easily during switching to burn out and can't carry out fault location's problem, but have and automatically switch main and auxiliary oil tank according to the oil mass, can carry out the oil mass and warn with the trouble moreover to can avoid the characteristics of heavy current damage contact.
In order to realize the technical effect, the utility model discloses a technical scheme be: a main and auxiliary oil tank switching automatic control device comprises a single chip microcomputer, wherein the input end of the single chip microcomputer is electrically connected with a power supply circuit, an oil quantity detection circuit and a current detection circuit; the output end of the singlechip is electrically connected with an output driving circuit; oil mass detection circuit one end and oil mass sensor electric connection, the other end and singlechip input electric connection, the last electric connection of oil mass detection circuit has resistance R3 and filter circuit, and filter circuit includes electric capacity C9 and the zener diode VD4 of establishing ties, and the filter circuit both ends respectively with oil mass detection circuit electric connection.
Further, the single chip microcomputer detects the analog quantity voltage of the oil quantity sensor; the resistance-capacitance filter circuit composed of the R3 and the C9 effectively filters noise waves in input voltage, and the voltage value of the voltage stabilizing diode VD4 clamps the oil mass sensor, so that the single chip microcomputer is prevented from being broken down by external overhigh voltage.
Preferably, one end of the output driving circuit is electrically connected with the output end of the single chip microcomputer, and the other end of the output driving circuit is electrically connected with the main and auxiliary oil tank change-over valve; one end of the output drive circuit is electrically connected with a relay K1 and a relay K2 to form a level conversion circuit; the other end of the output drive circuit is electrically connected with a field effect transistor Q3 for switching on and off the whole drive circuit.
Preferably, the output driving circuit is electrically connected to a reverse blocking circuit composed of a diode D2 and a current sampling circuit composed of a sampling resistor RL1, and an output end of the current sampling circuit is electrically connected to the current detecting circuit.
Preferably, one end of the current detection circuit is electrically connected with the sampling resistor RL1, and the other end of the current detection circuit is electrically connected with the input end of the singlechip; the current detection circuit is electrically connected with a delay filter circuit consisting of a resistor R9 and a capacitor C32, and the rear end of the delay filter circuit is electrically connected with a voltage division circuit consisting of a resistor R26 and a resistor R27.
Preferably, the rear end of the voltage division circuit is electrically connected with a comparator U4 for outputting level inversion.
Further, the single chip microcomputer is triggered to generate level jump interruption, and the single chip microcomputer disconnects Q3 to carry out short-circuit protection on the whole circuit.
Preferably, the single chip microcomputer is electrically connected with the CAN communication circuit; the CAN communication circuit comprises a CAN transceiver U5 and a peripheral circuit.
The utility model provides a pair of main and auxiliary fuel tank switches automatic control device's beneficial effect as follows:
in the device, the main and auxiliary oil tank switching automatic control device CAN automatically switch the main and auxiliary oil tanks according to the oil quantity of the oil tank, detect and protect the oil quantity in real time when the oil quantity is too low or a main and auxiliary oil tank switching valve fails, and report failure information through a CAN to give an alarm; the automatic control device for switching the main oil tank and the auxiliary oil tank is compatible with a manual operation mode, and the two modes cannot interfere with each other.
Drawings
The invention will be further described with reference to the following drawings and examples:
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a circuit diagram of the oil level detection circuit of the present invention;
fig. 3 is a circuit diagram of the output driving circuit of the present invention;
fig. 4 is a circuit diagram of the current detecting circuit of the present invention;
fig. 5 is a circuit diagram of the CAN communication circuit of the present invention;
fig. 6 is a schematic view of the external structure of the device body and the main and auxiliary fuel tanks of the present invention.
Detailed Description
As shown in fig. 1, an automatic control device for switching a main oil tank and an auxiliary oil tank comprises a single chip microcomputer, wherein the input end of the single chip microcomputer is electrically connected with a power supply circuit, an oil quantity detection circuit and a current detection circuit; the output end of the singlechip is electrically connected with an output drive circuit.
As shown in fig. 2, further, one end of the oil amount detection circuit is electrically connected to the oil amount sensor, the other end of the oil amount detection circuit is electrically connected to the input end of the single chip, the oil amount detection circuit is electrically connected to a resistor R3 and a filter circuit, the filter circuit includes a capacitor C9 and a voltage stabilizing diode VD4 which are connected in series, and two ends of the filter circuit are electrically connected to the oil amount detection circuit respectively.
Further, the single chip microcomputer detects the analog quantity voltage of the oil quantity sensor; the resistance-capacitance filter circuit composed of the R3 and the C9 effectively filters noise waves in input voltage, and the voltage value of the oil mass sensor is clamped by the voltage stabilizing diode VD4, so that the single chip microcomputer is prevented from being broken down by external over-high voltage.
As shown in fig. 3, preferably, one end of the output driving circuit is electrically connected to the output end of the single chip, and the other end of the output driving circuit is electrically connected to the main-auxiliary tank switching valve; one end of the output drive circuit is electrically connected with a relay K1 and a relay K2 to form a level switching circuit, and the output voltage is switched between positive and negative to further control the switching of a switching valve; the other end of the output drive circuit is electrically connected with a field effect transistor Q3 for switching on and off the whole drive circuit.
Furthermore, after the electrical appliances K1 and K2 are operated, the Q3 is electrified again, so that the ablation of the contacts caused by the electrified on-off of the relays K1 and K2 can be prevented, the service lives of the relays K1 and K2 are prolonged, and the EMC (electro magnetic compatibility) characteristic of the whole circuit is improved.
Preferably, the output driving circuit is electrically connected with a reverse cut-off circuit formed by a diode D2 and a current sampling circuit formed by a sampling resistor RL1, and the output end of the current sampling circuit is electrically connected with the current detection circuit; the diode D2 is cut off in the reverse direction, so that the influence of voltage on a circuit in an automatic switching mode can be prevented when the main oil tank and the auxiliary oil tank are manually switched; RL1 is a sampling resistor which can collect the current when the switching valve of the main and auxiliary fuel tanks works.
As shown in fig. 4, the current detection circuit is used to detect the working current of the main and sub tank switching valve, determine whether the main and sub tank switching valve works normally, and disconnect the power supply in time for protection when overcurrent and short circuit occur.
Preferably, one end of the current detection circuit is electrically connected with the sampling resistor RL1, and the other end of the current detection circuit is electrically connected with the input end of the singlechip to perform AD conversion processing; the current detection circuit is electrically connected with a delay filter circuit consisting of a resistor R9 and a capacitor C32, so that the response time of short-circuit current can be adjusted, and the rear end of the delay filter circuit is electrically connected with a voltage division circuit consisting of a resistor R26 and a resistor R27, so that the threshold value of short-circuit protection is adjusted; when the short-circuit current reaches a threshold value, the comparator U4 outputs a level to turn over, the single chip microcomputer is triggered to generate level jump interruption, and the single chip microcomputer disconnects Q3 to perform short-circuit protection on the whole circuit.
As shown in fig. 5, preferably, the single chip microcomputer is electrically connected with the CAN communication circuit; the CAN communication circuit comprises a CAN transceiver U5 and a peripheral circuit.
As shown in fig. 6, further, the main-auxiliary fuel tank switching automatic control device body is electrically connected with the main-auxiliary fuel tank switching valve, and the main-auxiliary fuel tank switching valve is electrically connected with the main fuel tank fuel quantity sensor and the auxiliary fuel tank fuel quantity sensor; the main oil tank fuel level sensor and the auxiliary oil tank fuel level sensor are electrically connected with the main and auxiliary oil tank switching automatic control device.
The working principle of the device is as follows:
the automatic switching control device of the main and auxiliary oil tanks judges the oil quantity of the current main and auxiliary oil tanks in real time through an oil quantity sensor, and automatically controls a main and auxiliary oil tank switching valve to switch when the oil quantity of the main oil tank is lower than a threshold value, so that the currently used oil tank is switched to the auxiliary oil tank; when the oil quantity of the auxiliary oil tank is lower than a threshold value, automatically controlling a main and auxiliary oil tank conversion valve to convert, and switching the currently used oil tank to the main oil tank; and when the oil quantity of the main oil tank and the auxiliary oil tank is lower than the threshold value, keeping the currently used oil tank unchanged.
The automatic control device for switching the main and auxiliary oil tanks detects the working current and switching time of the main and auxiliary oil tank switching valve when switching the main and auxiliary oil tank switching valve, and carries out fault diagnosis and protection when the main and auxiliary oil tank switching valve has short circuit, overcurrent and open circuit faults.
The automatic control device for switching the main and auxiliary oil tanks sends the current oil quantity information and the working state information of the main and auxiliary oil tank switching valve to the combination meter or the vehicle-mounted large screen for display in real time through the CAN. When the oil quantity is too low or the main and auxiliary oil tank conversion valve is in failure, alarm information is sent to prompt a driver.
The above embodiments are only preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the embodiments and features in the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the equivalents of the technical features in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (6)
1. The utility model provides a main bellytank switches automatic control device which characterized in that: the oil quantity detection circuit comprises a singlechip, wherein the input end of the singlechip is electrically connected with a power supply circuit, an oil quantity detection circuit and a current detection circuit; the output end of the singlechip is electrically connected with an output driving circuit; oil mass detection circuit one end and oil mass sensor electric connection, the other end and singlechip input electric connection, the last electric connection of oil mass detection circuit has resistance R3 and filter circuit, and filter circuit includes electric capacity C9 and the zener diode VD4 of establishing ties, the filter circuit both ends respectively with oil mass detection circuit electric connection.
2. The automatic control device for switching the main and auxiliary fuel tanks according to claim 1, wherein: one end of the output driving circuit is electrically connected with the output end of the single chip microcomputer, and the other end of the output driving circuit is electrically connected with the main and auxiliary oil tank change-over valve; one end of the output drive circuit is electrically connected with a relay K1 and a relay K2 to form a level conversion circuit; the other end of the output drive circuit is electrically connected with a field effect transistor Q3 for switching on and off the whole drive circuit.
3. The automatic control device for switching the main and auxiliary fuel tanks according to claim 1, wherein: the output driving circuit is electrically connected with a reverse cut-off circuit formed by a diode D2 and a current sampling circuit formed by a sampling resistor RL1, and the output end of the current sampling circuit is electrically connected with the current detection circuit.
4. The automatic control device for switching the main and auxiliary fuel tanks according to claim 1, wherein: one end of the current detection circuit is electrically connected with the sampling resistor RL1, and the other end of the current detection circuit is electrically connected with the input end of the single chip microcomputer; the current detection circuit is electrically connected with a delay filter circuit consisting of a resistor R9 and a capacitor C32, and the rear end of the delay filter circuit is electrically connected with a voltage division circuit consisting of a resistor R26 and a resistor R27.
5. The automatic control device for switching the main and auxiliary fuel tanks as claimed in claim 4, wherein: the rear end of the voltage division circuit is electrically connected with a comparator U4 to output level inversion.
6. The automatic control device for switching the main and auxiliary fuel tanks as claimed in claim 1, wherein: the single chip microcomputer is electrically connected with the CAN communication circuit; the CAN communication circuit comprises a CAN transceiver U5 and peripheral circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223172901.8U CN218777410U (en) | 2022-11-29 | 2022-11-29 | Automatic control device for switching main and auxiliary oil tanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223172901.8U CN218777410U (en) | 2022-11-29 | 2022-11-29 | Automatic control device for switching main and auxiliary oil tanks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218777410U true CN218777410U (en) | 2023-03-31 |
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ID=85711033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223172901.8U Active CN218777410U (en) | 2022-11-29 | 2022-11-29 | Automatic control device for switching main and auxiliary oil tanks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218777410U (en) |
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2022
- 2022-11-29 CN CN202223172901.8U patent/CN218777410U/en active Active
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