CN112459892A - Control system of electronic thermostat - Google Patents
Control system of electronic thermostat Download PDFInfo
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- CN112459892A CN112459892A CN202110122072.3A CN202110122072A CN112459892A CN 112459892 A CN112459892 A CN 112459892A CN 202110122072 A CN202110122072 A CN 202110122072A CN 112459892 A CN112459892 A CN 112459892A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
Abstract
The application discloses control system of electronic thermostat, including the minimum system of singlechip, CAN communication circuit, power supply circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit, CAN communication circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit connect the minimum system of singlechip, power supply circuit connects the minimum system of singlechip, CAN communication circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit. Has the following advantages: the intelligent control and intelligent drive of the electronic thermostat are realized, the electronic thermostat is made into intelligent hardware, the engine ECU CAN control the operation of the thermostat only by sending an opening command to the electronic thermostat through a CAN bus, and the ECU is not required to output control current to the electronic thermostat; the output position feedback function of the electronic thermostat is realized by additionally arranging the position detection sensor on the output driving shaft of the electronic thermostat, so that the functions of position closed-loop control and fault diagnosis are achieved.
Description
Technical Field
The invention relates to an engine control system, in particular to a control system of an intelligent electronic thermostat.
Background
The automobile thermostat automatically regulates the water amount entering the radiator according to the temperature of cooling water, changes the circulation range of the water, so as to regulate the heat dissipation capacity of a cooling system and ensure that an engine works in a proper temperature range. The thermostat must maintain good state of technology or otherwise seriously affect the normal operation of the engine.
The existing electronic thermostat is characterized in that a heating resistance wire is integrated in the thermostat, an engine ECU directly heats the resistance wire, and a chip circuit for driving the resistance wire to heat is integrated in the ECU, so that when the ECU heats the thermostat, a large current flows, the ECU is not favorable for the stability of the ECU, and the large current can bring signal interference. The second problem of the electronic thermostat is that the electronic thermostat is controlled in an open loop mode, the temperature and the stroke of the electronic thermostat are not fed back, and after the resistance wire is heated, the electronic thermostat does not detect and feed back whether a specific command is executed or not.
Disclosure of Invention
In order to solve the problems, the invention provides a control system of an electronic thermostat, which realizes intelligent control and intelligent drive of the electronic thermostat, the electronic thermostat is made into intelligent hardware, an engine ECU only needs to send an opening command to the electronic thermostat through a CAN bus to control the operation of the thermostat, and the ECU is not needed to output control current to the electronic thermostat; the output position feedback function of the electronic thermostat is realized by additionally arranging the position detection sensor on the output driving shaft of the electronic thermostat, so that the functions of position closed-loop control and fault diagnosis are achieved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a control system of electronic thermostat, includes singlechip minimum system, CAN communication circuit, power supply circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit, CAN communication circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit connect singlechip minimum system, power supply circuit connects singlechip minimum system, CAN communication circuit, valve rod position detection circuit, wax package temperature detection circuit and wax package heating circuit.
Further, the minimum system of the single chip microcomputer comprises a chip U1, and the model of the chip U1 is FS32K116LIT0 VFMT.
Furthermore, pins 3 and 21 of the chip U1 are connected to 5V, pins 4 and 20 of the chip U1 are connected to one end of a capacitor C1, pin 4 of the crystal oscillator Y1, pin 2 of the crystal oscillator Y1, one end of a capacitor C6, one end of a capacitor C5, one end of a capacitor C2 and one end of a capacitor C3, and are grounded, pin 6 of the chip U1 is connected to one end of a resistor R2, the other end of the capacitor C1 and pin 3 of the crystal oscillator Y1, and pin 5 of the chip U1 is connected to the other end of the resistor R2, pin 1 of the crystal oscillator Y1 and one end of the capacitor C6; the other end of the capacitor C5 is connected with a pin 4 of a connector P1 and one end of a resistor R1, and the other ends of the resistor R1, the capacitor C2 and the capacitor C3 are connected with VCC; the pin 2 of the connector P1 is connected with the pin 31 of the chip U1, the pin 3 of the connector P1 is connected with the pin 36 of the chip U1, the pin 5 of the connector P1 is grounded, the pin 41 of the chip U1 is connected with one end of a diode D6, the other end of the diode D6 is connected with one end of a resistor R27, and the other end of the resistor R27 is connected with VCC.
Further, the power supply circuit comprises a chip U5, the model of the chip U5 is MAX17501BTEVKIT, the VIN pin of the chip U5 is connected with VCC, the EN/UVLO pin of the chip U5 is connected with one end of a resistor R10 and one end of a resistor R12, the other end of the resistor R10 is connected with VCC, the VCC pin of the chip U5 is connected with one end of a capacitor C21, the SS pin of the chip U5 is connected with one end of a capacitor C22, the other end of the capacitor C22, the other end of the capacitor C21 and the other end of the resistor R12 are grounded, the 10 pin of the chip U5 is connected with one end of an inductor L3, the 5 pin of the chip U637 is connected with one end of a capacitor C17, one end of a capacitor C18, one end of the capacitor C18 and the other end of the inductor L18 and is grounded, and the 1 pin, 0 pin, 9 pin, the.
Furthermore, the power supply circuit further comprises a pad P3, one end of the pad P3 is connected with one end of a diode D2 and connected with VCC in parallel, the other end of the diode D2 is connected with one end of an inductor L1 and one end of a capacitor C14, the other end of the inductor L1 is connected with one end of a capacitor C15 and one end of a capacitor C16 and connected with VCC in parallel, and the other end of a capacitor C14, the other end of the capacitor C15 and the other end of the capacitor C16 are;
the power supply circuit further comprises a bonding pad P5, one end of the bonding pad 5 is connected with one end of an inductor L2 and grounded, the other end of the inductor L2 is grounded, one end of a resistor R6 is connected with VCC, the other end of the resistor R6 is connected with one end of a diode D1, and the other end of the diode D1 is grounded.
Further, wax package heating circuit includes electric heating pipe PT1, and electric heating pipe PT1 one end ground connection, and the electric heating pipe PT1 other end is connected with field effect transistor Q1's source electrode one end, and a field effect transistor Q1's drain electrode termination VCC, field effect transistor Q1's grid one end is connected with resistance R28 one end and resistance R29 one end, and resistance R29 other end ground connection, the resistance R28 other end is connected with chip U1's 8 feet.
Furthermore, the wax package temperature detection circuit comprises an NTC thermistor R31, one end of the NTC thermistor R31 is grounded, the other end of the NTC thermistor R31 is connected with one end of a resistor R30 and a pin 34 of a chip U1, and the other end of the resistor R30 is connected with VCC.
Further, the CAN communication circuit comprises a chip U7, and the model of the chip U7 is TAJ1042 TK/3.
Furthermore, the VDD of the chip U7 is connected to VCC, the GND of the chip U7 is grounded, the TXD pin of the chip U7 is connected to pin 1 of the chip U1, the RXD pin of the chip U7 is connected to pin 2 of the chip U1, pin 5 of the chip U7 is connected to VCC, pin 8 of the chip U7 is grounded, pin 7 of the chip U7 is connected to one end of a pad P6, one end of a resistor R13 and pin 2 of a TVS diode D3, pin 6 of the chip U7 is connected to the other end of the resistor R13, one end of the pad P7 and pin 1 of the TVS diode D3, and the other end of the TVS diode D3 is grounded.
Furthermore, the valve rod position detection circuit comprises a chip U9, the model of the chip U9 is MLX90365, a VDD pin of the chip U9 is connected with one end of a capacitor C32 and one end of a resistor R23, the other end of the resistor R23 is connected with one end of a capacitor C31 and is connected with VCC in parallel, a Test0 pin of the chip U9, a Test2 pin of the chip U9 and a No Used pin of the chip U9 are connected with the other end of the capacitor C32 and the other end of the capacitor C31 and are grounded; the 7 pin of the chip U9 is connected with one end of a capacitor C33, the 8 pin of the chip U9, the 6 pin of the chip U9 and the other end of the capacitor C33 are grounded, the 5 pin of the chip U9 is connected with one end of a resistor R24 and one end of a capacitor C34, the other end of the resistor R24 is connected with one end of a capacitor C35 and the 33 pin of the chip U1, and the other end of the capacitor C34 and the other end of the capacitor C35 are grounded.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the thermostat valve position feedback function is added, the function can detect the actual position of the thermostat valve rod and serve as feedback of closed-loop control, and once the thermostat valve is detected not to be opened to a preset opening degree, the thermostat fault can be judged or the feedback basis for continuously adjusting the thermostat is used;
through the mode of CAN bus communication, make intelligent hardware with the electronic thermostat, integrated heating resistor silk on the electronic thermostat, the drive circuit of heating resistor silk, CAN communication circuit, power conversion circuit, position detection circuit, intelligent control chip, the automatic control of electronic thermostat has been realized, the drive function by oneself, only need accept ECU's order through the CAN bus, resistance wire heating current that just CAN the automatic output response, do not need ECU oneself to integrate these circuits, also need not ECU oneself to send very big control current.
When the engine control unit sends an opening signal to the thermostat, the electronic thermostat can be automatically opened to a preset stroke, and if the electronic thermostat is detected not to be executed according to the preset opening for a long time, the fault of the thermostat can be judged; and after the thermostat is judged to have a fault, the CAN bus sends a fault signal to the engine control unit.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a block diagram of the control system of the present invention;
FIGS. 2-7 are schematic circuit diagrams of the control system of the present invention;
fig. 8 is a schematic structural diagram of the electronic thermostat of the present invention.
Detailed Description
In an embodiment, as shown in fig. 8, an electronic thermostat includes an output driving shaft 1, a heating wax bag 2 is mounted on the output driving shaft 1, a heating resistance wire 3 is mounted in the heating wax bag 2, a magnet 4 is mounted on the output driving shaft 1, and a magnetic field intensity detection chip 5 is mounted on one side of the magnet 4.
As shown in figure 1, the control system of the electronic thermostat comprises a single-chip microcomputer minimum system, a CAN communication circuit, a power supply circuit, a valve rod position detection circuit, a wax packet temperature detection circuit and a wax packet heating circuit, wherein the CAN communication circuit, the valve rod position detection circuit, the wax packet temperature detection circuit and the wax packet heating circuit are connected with the single-chip microcomputer minimum system, and the power supply circuit is connected with the single-chip microcomputer minimum system, the CAN communication circuit, the valve rod position detection circuit, the wax packet temperature detection circuit and the wax packet heating circuit.
As shown in fig. 2, the minimum system of the single chip microcomputer includes a chip U1, a chip U1 is FS32K116LIT0VFMT, pins 3 and 21 of the chip U1 are connected to 5V, pins 4 and 20 of the chip U1 are connected to one end of a capacitor C1, pin 4 of a crystal oscillator Y1, pin 2 of a crystal oscillator Y1, one end of a capacitor C6, one end of a capacitor C5, one end of a capacitor C2 and one end of a capacitor C3, and are grounded, pin 6 of a chip U1 is connected to one end of a resistor R2, the other end of a capacitor C1 and pin 3 of a crystal oscillator Y1, and pin 5 of a chip U1 is connected to the other end of a resistor R2, pin 1 of a crystal oscillator Y1 and one end of a capacitor C6; the other end of the capacitor C5 is connected with a pin 4 of a connector P1 and one end of a resistor R1, and the other ends of the resistor R1, the capacitor C2 and the capacitor C3 are connected with VCC; the pin 2 of the connector P1 is connected with the pin 31 of the chip U1, the pin 3 of the connector P1 is connected with the pin 36 of the chip U1, the pin 5 of the connector P1 is grounded, the pin 41 of the chip U1 is connected with one end of a diode D6, the other end of the diode D6 is connected with one end of a resistor R27, and the other end of the resistor R27 is connected with VCC.
As shown in fig. 3, the power supply circuit includes a chip U5, the model of the chip U5 is MAX17501BTEVKIT, the VIN pin of the chip U5 is connected to VCC, the EN/UVLO pin of the chip U5 is connected to one end of a resistor R10 and one end of a resistor R12, the other end of the resistor R10 is connected to VCC, the VCC pin of the chip U5 is connected to one end of a capacitor C21, the SS pin of the chip U5 is connected to one end of a capacitor C22, the other end of a capacitor C22, the other end of a capacitor C21 and the other end of a resistor R12 are grounded, the 10 pin of the chip U5 is connected to one end of an inductor L3, the 5 pin of the chip U637 is connected to one end of a capacitor C17, one end of a capacitor C18 and the other end of an inductor L18, and is grounded, the 1 pin, 0 pin, 9 pin.
The power supply circuit further comprises a bonding pad P3, one end of the bonding pad P3 is connected with one end of a diode D2 and is connected with VCC in a parallel mode, the other end of the diode D2 is connected with one end of an inductor L1 and one end of a capacitor C14, the other end of the inductor L1 is connected with one end of a capacitor C15 and one end of a capacitor C16 and is connected with VCC in a parallel mode, and the other end of the capacitor C14, the other end of the capacitor C15 and.
The power supply circuit further comprises a bonding pad P5, one end of the bonding pad 5 is connected with one end of an inductor L2 and grounded, the other end of the inductor L2 is grounded, one end of a resistor R6 is connected with VCC, the other end of the resistor R6 is connected with one end of a diode D1, and the other end of the diode D1 is grounded.
As shown in fig. 4, the wax package heating circuit includes an electric heating tube PT1, one end of the electric heating tube PT1 is grounded, the other end of the electric heating tube PT1 is connected with one end of a source electrode of a field effect tube Q1, one end of a drain electrode of the field effect tube Q1 is connected with VCC, one end of a gate electrode of the field effect tube Q1 is connected with one end of a resistor R28 and one end of a resistor R29, the other end of the resistor R29 is grounded, the other end of the resistor R28 is connected with an 8-pin of a chip U1, and the wax package heating circuit is.
As shown in FIG. 5, the wax package temperature detection circuit comprises an NTC thermistor R31, one end of the NTC thermistor R31 is grounded, the other end of the NTC thermistor R31 is connected with one end of a resistor R30 and a pin 34 of a chip U1, and the other end of the resistor R30 is connected with VCC.
As shown in fig. 6, the CAN communication circuit includes a chip U7, the model of the chip U7 is TAJ1042TK/3, VDD of the chip U7 is connected to VCC, GND of the chip U7 is grounded, TXD of the chip U7 is connected to pin 1 of the chip U1, RXD of the chip U7 is connected to pin 2 of the chip U1, pin 5 of the chip U7 is connected to VCC, pin 8 of the chip U7 is grounded, pin 7 of the chip U7 is connected to one end of a pad P6, one end of a resistor R13 and pin 2 of a TVS diode D3, pin 6 of the chip U7 is connected to the other end of a resistor R13, one end of the pad P7 and pin 1 of the TVS diode D3, and the other end of the TVS diode D3 is grounded.
As shown in fig. 7, the valve rod position detection circuit includes a chip U9, the model of the chip U9 is MLX90365, the VDD pin of the chip U9 is connected with one end of a capacitor C32 and one end of a resistor R23, the other end of the resistor R23 is connected with one end of a capacitor C31 and is connected to VCC, the Test0 pin of the chip U9, the Test2 pin of the chip U9 and the No Used pin of the chip U9 are connected with the other end of the capacitor C32 and the other end of the capacitor C31 and are grounded; the 7 feet of the chip U9 are connected with one end of a capacitor C33, the 8 feet of the chip U9, the 6 feet of the chip U9 and the other end of the capacitor C33 are grounded, the 5 feet of the chip U9 are connected with one end of a resistor R24 and one end of a capacitor C34, the other end of the resistor R24 is connected with one end of a capacitor C35 and the 33 feet of the chip U1, the other end of the capacitor C34 and the other end of the capacitor C35 are grounded, and the valve rod position detection circuit is used for controlling the work of the magnetic.
The working principle of the invention is as follows:
1. the ECU sends a control command to the electronic thermostat through the CAN communication circuit, the electronic thermostat control system outputs a PWM signal according to the received command to control the on-off of the MOS tube, so that the heating tube is controlled, the wax packet is heated by the heating tube, the control valve is opened according to the difference of the control command, the duty ratio of the output PWM CAN be adjusted, the temperature of the heating tube is controlled, and the position of the valve is accurately controlled;
2. a wax package temperature detection circuit is arranged in the wax package, the NTC thermistor detects the current wax package temperature, and the temperature is fed back to the ECU through the CAN communication circuit, so that the wax package temperature is prevented from being too high;
3. a position detection sensor is arranged on the valve rod, the current position of the valve rod is detected in real time, and the position is fed back to the ECU through a CAN communication circuit.
The electronic thermostat is made into an intelligent hardware form, is provided with a heating resistance wire driving chip and a CAN communication circuit and a singlechip minimum system, is provided with a power chip, and only needs to be connected with a 24V power supply from an engine storage battery and connected with a CAN communication circuit from an engine CAN bus.
The working mode of the electronic thermostat is that the electronic thermostat communicates with an engine ECU through a CAN communication circuit, the ECU sends a heating command to a chip U1, after the chip U1 calculates the heating command by itself, a response PWM control parameter is output to a field effect transistor Q1, the field effect transistor Q1 executes the command and outputs a corresponding current value, an electric heating tube heats a resistance wire, the heating quantity of the resistance wire CAN be adjusted through a PWM control value of the chip U1, the separation of ECU control signals and driving signals is realized, and the ECU cannot output a larger current value.
The NTC thermistor in the wax package temperature detection circuit detects the current wax package temperature, feeds back the temperature to the ECU through the CAN communication circuit, if the temperature is too high, the ECU sends a heating stop command to the chip U1, the chip U1 sends a command to the field effect transistor Q1, and the field effect transistor Q1 executes a command to stop driving the electric heating tube to heat, so that the wax package temperature is prevented from being too high.
In order to solve the problem that an actuator does not feed back after an electronic thermostat is heated, the output driving rod of the electronic thermostat is additionally provided with the magnet, the position of the magnet is sensed by the magnetic field intensity sensing chip, and the position feedback signal of the output driving rod of the thermostat can be accurately obtained, so that the original open-loop control is changed into closed-loop control, the fault diagnosis function of the electronic thermostat is also realized by judging the position of the output rod, and if the intelligent control chip monitors that the output driving rod of the electronic thermostat does not run to a specified position for a long time, the fault of the electronic thermostat can be preliminarily judged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A control system of an electronic thermostat is characterized in that: the wax bag temperature detection device comprises a single chip microcomputer minimum system, a CAN communication circuit, a power circuit, a valve rod position detection circuit, a wax bag temperature detection circuit and a wax bag heating circuit, wherein the CAN communication circuit, the valve rod position detection circuit, the wax bag temperature detection circuit and the wax bag heating circuit are connected with the single chip microcomputer minimum system, and the power circuit is connected with the single chip microcomputer minimum system, the CAN communication circuit, the valve rod position detection circuit, the wax bag temperature detection circuit and the wax bag heating circuit.
2. A control system for an electronic thermostat according to claim 1 wherein: the minimum system of the single chip microcomputer comprises a chip U1, and the model of the chip U1 is FS32K116LIT0 VFMT.
3. A control system for an electronic thermostat according to claim 2 wherein: pins 3 and 21 of the chip U1 are connected with 5V, pins 4 and 20 of the chip U1 are connected with one end of a capacitor C1, one end of a crystal oscillator Y1, one end of a crystal oscillator Y1, one end of a capacitor C6, one end of a capacitor C5, one end of a capacitor C2 and one end of a capacitor C3, and are grounded, pin 6 of the chip U1 is connected with one end of a resistor R2, the other end of the capacitor C1 and pin 3 of the crystal oscillator Y1, and pin 5 of the chip U1 is connected with the other end of the resistor R2, pin 1 of the crystal oscillator Y1 and one end of the capacitor C6; the other end of the capacitor C5 is connected with a pin 4 of a connector P1 and one end of a resistor R1, and the other ends of the resistor R1, the capacitor C2 and the capacitor C3 are connected with VCC; the pin 2 of the connector P1 is connected with the pin 31 of the chip U1, the pin 3 of the connector P1 is connected with the pin 36 of the chip U1, the pin 5 of the connector P1 is grounded, the pin 41 of the chip U1 is connected with one end of a diode D6, the other end of the diode D6 is connected with one end of a resistor R27, and the other end of the resistor R27 is connected with VCC.
4. A control system for an electronic thermostat according to claim 1 wherein: the power supply circuit comprises a chip U5, the model of the chip U5 is MAX17501BTEVKIT, the VIN pin of the chip U5 is connected with VCC, the EN/UVLO pin of the chip U5 is connected with one end of a resistor R10 and one end of a resistor R12, the other end of the resistor R10 is connected with VCC, the VCC pin of the chip U5 is connected with one end of a capacitor C21, the SS pin of the chip U5 is connected with one end of a capacitor C22, the other end of a capacitor C22, the other end of a capacitor C21 and the other end of a resistor R12 are grounded, the 10 pin of the chip U5 is connected with one end of an inductor L3, the 5 pin of the chip U5 is connected with one end of a capacitor C17, one end of a capacitor C18, one end of the capacitor C18 and the other end of the inductor L18, and is grounded, and the pin 1, pin.
5. A control system for an electronic thermostat according to claim 1 wherein: the power supply circuit further comprises a bonding pad P3, one end of the bonding pad P3 is connected with one end of a diode D2 and is connected with VCC in parallel, the other end of a diode D2 is connected with one end of an inductor L1 and one end of a capacitor C14, the other end of an inductor L1 is connected with one end of a capacitor C15 and one end of a capacitor C16 and is connected with VCC in parallel, and the other end of a capacitor C14, the other end of a capacitor C15 and the other end of;
the power supply circuit further comprises a bonding pad P5, one end of the bonding pad 5 is connected with one end of an inductor L2 and grounded, the other end of the inductor L2 is grounded, one end of a resistor R6 is connected with VCC, the other end of the resistor R6 is connected with one end of a diode D1, and the other end of the diode D1 is grounded.
6. A control system for an electronic thermostat according to claim 1 wherein: the wax package heating circuit comprises an electric heating tube PT1, one end of an electric heating tube PT1 is grounded, the other end of an electric heating tube PT1 is connected with one end of a source electrode of a field-effect tube Q1, one end of a drain electrode of the field-effect tube Q1 is connected with VCC, one end of a grid electrode of the field-effect tube Q1 is connected with one end of a resistor R28 and one end of a resistor R29, the other end of the resistor R29 is grounded, and the other end of the resistor R28 is connected with 8 pins.
7. A control system for an electronic thermostat according to claim 1 wherein: the wax package temperature detection circuit comprises an NTC thermistor R31, one end of the NTC thermistor R31 is grounded, the other end of the NTC thermistor R31 is connected with one end of a resistor R30 and a pin 34 of a chip U1, and the other end of the resistor R30 is connected with a VCC.
8. A control system for an electronic thermostat according to claim 1 wherein: the CAN communication circuit comprises a chip U7, and the model of the chip U7 is TAJ1042 TK/3.
9. A control system for an electronic thermostat according to claim 8 wherein: VDD of the chip U7 is connected with VCC, GND of the chip U7 is grounded, TXD pin of the chip U7 is connected with pin 1 of the chip U1, RXD pin of the chip U7 is connected with pin 2 of the chip U1, pin 5 of the chip U7 is connected with VCC, pin 8 of the chip U7 is grounded, pin 7 of the chip U7 is connected with one end of a pad P6, one end of a resistor R13 and pin 2 of a TVS diode D3, pin 6 of the chip U7 is connected with the other end of a resistor R13, one end of a pad P7 and pin 1 of a TVS diode D3, and the other end of the TVS diode D3 is grounded.
10. A control system for an electronic thermostat according to claim 1 wherein: the valve rod position detection circuit comprises a chip U9, the model of the chip U9 is MLX90365, a VDD pin of the chip U9 is connected with one end of a capacitor C32 and one end of a resistor R23, the other end of the resistor R23 is connected with one end of a capacitor C31 and is connected with VCC in parallel, a Test0 pin of the chip U9, a Test2 pin of the chip U9 and a No Used pin of the chip U9 are connected with the other end of the capacitor C32 and the other end of the capacitor C31 and are grounded; the 7 pin of the chip U9 is connected with one end of a capacitor C33, the 8 pin of the chip U9, the 6 pin of the chip U9 and the other end of the capacitor C33 are grounded, the 5 pin of the chip U9 is connected with one end of a resistor R24 and one end of a capacitor C34, the other end of the resistor R24 is connected with one end of a capacitor C35 and the 33 pin of the chip U1, and the other end of the capacitor C34 and the other end of the capacitor C35 are grounded.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
| CN113064371A (en) * | 2021-03-23 | 2021-07-02 | 博鼎汽车科技(山东)有限公司 | Ship engine heat management system controlled by monitor and implementation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713193A (en) * | 2009-12-04 | 2012-10-03 | 丰田自动车株式会社 | Control device for vehicle |
| CN203081558U (en) * | 2013-01-16 | 2013-07-24 | 广西玉柴机器股份有限公司 | Electronically controlled dual temperature adjusting device structure |
| CN104704277A (en) * | 2012-09-17 | 2015-06-10 | 博格华纳埃斯林根有限公司 | Thermostatic valve for controlling the temperature of the coolant in an internal combustion engine |
| CN204402637U (en) * | 2014-12-31 | 2015-06-17 | 陈旭东 | Electronic thermostat |
| CN205013112U (en) * | 2015-08-26 | 2016-02-03 | 重庆长安汽车股份有限公司 | Electronic temperature regulator of automobile engine |
| CN105308283A (en) * | 2013-01-30 | 2016-02-03 | 菲斯曼热电技术有限公司 | Hydro-actuated thermostats |
| WO2018087746A1 (en) * | 2016-11-13 | 2018-05-17 | M.A.P. Motorad Automotive Parts Ltd | Thermostat assembly with position sensor |
| CN211039895U (en) * | 2019-10-09 | 2020-07-17 | 杭州三花研究院有限公司 | Electric valve |
-
2021
- 2021-01-29 CN CN202110122072.3A patent/CN112459892B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713193A (en) * | 2009-12-04 | 2012-10-03 | 丰田自动车株式会社 | Control device for vehicle |
| CN104704277A (en) * | 2012-09-17 | 2015-06-10 | 博格华纳埃斯林根有限公司 | Thermostatic valve for controlling the temperature of the coolant in an internal combustion engine |
| CN203081558U (en) * | 2013-01-16 | 2013-07-24 | 广西玉柴机器股份有限公司 | Electronically controlled dual temperature adjusting device structure |
| CN105308283A (en) * | 2013-01-30 | 2016-02-03 | 菲斯曼热电技术有限公司 | Hydro-actuated thermostats |
| CN204402637U (en) * | 2014-12-31 | 2015-06-17 | 陈旭东 | Electronic thermostat |
| CN205013112U (en) * | 2015-08-26 | 2016-02-03 | 重庆长安汽车股份有限公司 | Electronic temperature regulator of automobile engine |
| WO2018087746A1 (en) * | 2016-11-13 | 2018-05-17 | M.A.P. Motorad Automotive Parts Ltd | Thermostat assembly with position sensor |
| CN211039895U (en) * | 2019-10-09 | 2020-07-17 | 杭州三花研究院有限公司 | Electric valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113064371A (en) * | 2021-03-23 | 2021-07-02 | 博鼎汽车科技(山东)有限公司 | Ship engine heat management system controlled by monitor and implementation method thereof |
| CN113027591A (en) * | 2021-03-31 | 2021-06-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
| CN113027591B (en) * | 2021-03-31 | 2022-10-25 | 潍柴动力股份有限公司 | Equipment and method for controlling movement of main valve of electronic thermostat |
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