Novel electric starting control and monitoring device for gasoline and diesel engine

Abstract

The utility model provides a novel electric starting control and monitoring device for gasoline and diesel engines, which comprises a direct-current power supply, a starting controller and a starting relay, and the starting controller comprises a power supply adjusting unit which supplies power to a central processing unit after voltage stabilization and adjustment of the direct-current power supply; the state of the direct-current power supply is monitored, an execution starting signal and a starting indication signal are output to prompt a user to start when the state of the power supply is normal, and a buffer indication signal is output to prompt the user to start the controller to a buffer period after starting. The central processing unit is used for outputting a charging indication signal to prompt a user to charge the direct-current power supply when the power supply state is abnormal or the voltage is low; the power supply state indicating unit is used for lighting an indicating lamp according to the indicating signal output by the central processing unit; and the starting control output unit outputs a starting control signal to the starting relay according to the execution starting signal output by the central processing unit so as to start the diesel engine. The device realizes electric starting by monitoring the state of the power supply, and prevents the power supply from being damaged by over-discharge.

Description

Technical Field

[0001] The utility model relates to the technical field of gasoline and diesel engine starting control devices, in particular to a new type of gasoline and diesel engine electric starting control and monitoring device. Background Art

[0002] A gasoline engine is an engine that uses gasoline as fuel to convert internal energy into kinetic energy. Since gasoline has low viscosity and evaporates quickly, it can be sprayed into the cylinder using a gasoline injection system. After being compressed to a certain temperature and pressure, it is ignited by a spark plug to expand the gas and do work. The characteristics of a gasoline engine are high speed, simple structure, light weight, low cost, stable operation, and easy use and maintenance.

[0003] A diesel engine is an engine that burns diesel to release energy. The advantages of a diesel engine are high torque and good economic performance. The working process of a diesel engine has many similarities with a gasoline engine. Each working cycle also goes through four strokes: intake, compression, power, and exhaust.

[0004] At present, many small gasoline and diesel engines are widely used in the fields of agricultural machinery and general machinery, such as small agricultural machinery, lawn mowers, logging machines, etc. The inventors of this application have found in actual applications that many existing small gasoline and diesel engines are manually started by manual pull-wire reels, which requires high physical fitness of users and is very inconvenient. Utility Model Content

[0005] Aiming at the technical problem that many existing small gasoline and diesel engines are started manually by manual pull-wire reels, which has high requirements on the physical fitness of users and is very inconvenient, the utility model provides a new type of electric starting control and monitoring device for gasoline and diesel engines.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A novel electric start control and monitoring device for a gasoline and diesel engine comprises a DC power supply, a start controller and a start relay. The start controller is arranged inside a housing. The start controller comprises a power adjustment unit, a central processing unit provided with a control button, a power state indication unit and a start control output unit. The power adjustment unit is used to stabilize and adjust the DC power supply to supply power to the central processing unit; the central processing unit is used to monitor the power state of the DC power supply, output a start indication signal to prompt a user to press the control button to start and output an execution start signal when the power state is normal, and output a buffer indication signal after the machine is started to prompt the user that the start controller will not be able to start after entering a buffer period of a predetermined time, and output a charging indication signal to prompt the user to charge the DC power supply when the power state is abnormal or the voltage is low; the power state indication unit is used to light up corresponding start, buffer and charge indicator lights according to the start indication signal, buffer indication signal and charging indication signal output by the central processing unit; the start control output unit is used to output a start control signal to provide the DC power supply to the start relay to attract and start the gasoline and diesel engine normally according to the execution start signal output by the central processing unit.

[0008] Furthermore, the DC power supply is a lithium-ion battery.

[0009] Furthermore, the power supply adjustment unit includes a diode D1, a resistor R3, capacitors C1~C3 and a three-terminal voltage regulator U1, the positive electrode of the diode D1 is connected to the positive electrode of the DC power supply, the negative electrode of the diode D1 is connected to the resistor R3 and one end of the capacitor C1 and the central processing unit, the other end of the resistor R3 is connected to the input end of the three-terminal voltage regulator U1, the output end of the three-terminal voltage regulator U1 is connected to one end of the capacitor C2 and the capacitor C3 and the central processing unit, and the ground end of the three-terminal voltage regulator U1 and the other ends of the capacitors C1, C2 and C3 are all grounded.

[0010] Further, the central processing unit includes a central processing unit JP1, a resistor R4, resistors R6 to R9, capacitors C4 and C5, and a control button S1. The power supply end of the central processing unit JP1 is connected to the power supply adjustment unit, the power supply monitoring end of the central processing unit JP1 is connected to the power supply adjustment unit through the resistor R4 and the resistor R8, one end of the capacitor C4 and the resistor R7 are connected between the resistor R4 and the resistor R8, the operation control end of the central processing unit JP1 is connected to one end of the capacitor C5 and is connected to the power supply adjustment unit through the resistor R6 and the resistor R9, one end of the control button S1 is connected between the resistor R6 and the resistor R9, and the other ends of the control button S1, the capacitor C5, the capacitor C4, and the resistor R7 are all grounded; the start indication end, the buffer indication end, and the charging indication end of the central processing unit JP1 are all connected to the power supply status indication unit, and the execution start end of the central processing unit JP1 is connected to the start control output unit.

[0011] Furthermore, the power status indication unit includes a resistor R5, resistors R11 and R12, and light-emitting diodes LED1 to LED3. One ends of the resistor R5, resistors R11 and R12 are respectively connected to the central processing unit, the other end of the resistor R5 is grounded via the light-emitting diode LED1, the other end of the resistor R11 is grounded via the light-emitting diode LED2, and the other end of the resistor R12 is grounded via the light-emitting diode LED3.

[0012] Further, the startup control output unit includes a resistor R2, a transistor Q2, a resistor R1, a resistor R10, a MOS transistor Q1 and a diode D2, one end of the resistor R2 is connected to the central processing unit, the other end of the resistor R2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R1 and the gate of the MOS transistor Q1, the source of the MOS transistor Q1 and the other end of the resistor R1 are connected to the positive electrode of the DC power supply, the emitter of the transistor Q2 is connected to the negative electrode of the DC power supply and the positive electrode of the diode D2, and the negative electrode of the diode D2 is connected to the drain of the MOS transistor Q1 for outputting a startup control signal.

[0013] Compared with the prior art, the novel electric start control and monitoring device for gasoline and diesel engines provided by the utility model supplies power to the central processing unit through a DC power supply, and the central processing unit monitors the power status of the DC power supply. On the one hand, when the power status is normal, a start indication signal is output to the power status indication unit for start indication. At this time, the start indicator light is on, prompting the user to press the control button to start the machine normally. At the same time, the central processing unit outputs an execution start signal to the start control output unit, and the start control output unit outputs a start control signal accordingly to provide DC power to the start relay to attract so that the gasoline and diesel engines start normally. After the machine is started, the central processing unit The unit also outputs a buffer indication signal to the power status indication unit for buffer indication. At this time, the buffer indicator light is on, prompting the user to start the controller and enter a buffer period of a predetermined time, so that the DC power supply with large current discharge has a voltage recovery process during the buffer period. During this buffer period, the start controller will protect the DC power supply so that the machine cannot be started. After the buffer is completed, the start indicator light can be turned on before it can be started again; on the other hand, when the power status is abnormal or the voltage is low, a charging indication signal is output to the power status indication unit for charging indication. At this time, the charging indicator light is on, prompting the user to charge the DC power supply. It can only be started normally after the charging is completed and the start indicator light is turned on. Therefore, this device solves the problems of inconvenience of existing manual starting and the need for strong physical strength. It is very convenient to use. At the same time, it can monitor the power status of the DC power supply and display the power status through different indicator lights. It will not be able to start when the power supply is abnormal or the voltage is low, and there is a buffer period after starting to ensure that the DC power supply after large current discharge can effectively recover to the normal starting state to avoid excessive discharge and damage to the power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a principle circuit diagram of a DC power supply and a starting controller in the device provided by the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the connection principle of a new type of electric starting control and monitoring device for gasoline and diesel engines provided by the utility model and applied to a small diesel engine.

[0016] Figure 3 It is a structural schematic diagram of a start controller in the device provided by the utility model.

[0017] In the figure, 1. start controller; 11. power adjustment unit; 12. central processing unit; 13. power status indication unit; 14. start control output unit; 2. housing; 3. control button. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Please refer to Figures 1 to 3 As shown, the utility model provides a novel electric start control and monitoring device for gasoline and diesel engines, including a DC power supply, a start controller 1 and a start relay. The start controller 1 is arranged inside a housing 2, and the start controller 1 includes a power adjustment unit 11, a central processing unit 12 provided with a control button 3, a power state indication unit 13 and a start control output unit 14. The power adjustment unit 11 is used to adjust the DC power supply voltage and supply power to the central processing unit 12; the central processing unit 12 is used to monitor the power state of the DC power supply, and when the power state is normal, output a start indication signal to prompt the user to press the control button to start and output an execution start signal. After the machine is started, a buffer indication signal is output to remind the user that the start controller 1 will enter a buffer period of a predetermined time (such as 30 to 60 seconds) and will be unable to start. When the power supply status is abnormal or the voltage is low, a charging indication signal is output to remind the user to charge the DC power supply. The power supply status indication unit 13 is used to light up the corresponding start, buffer and charging indicator lights according to the start indication signal, buffer indication signal and charging indication signal output by the central processing unit 12. The start control output unit 14 is used to output a start control signal according to the execution start signal output by the central processing unit 12 to provide the DC power supply to the start relay to attract and start the gasoline and diesel engines normally.

[0021] As a specific embodiment, since lithium-ion batteries have the advantages of large specific energy, long cycle life, good safety performance, low self-discharge, and rapid charge and discharge, the DC power supply described in this application is preferably implemented using lithium-ion batteries. Of course, the DC power supply is not limited to this, and technicians in this field can also use other DC power supplies to implement it.

[0022] As a specific example, please refer to Figure 1As shown, the power supply adjustment unit 11 includes a diode D1, a resistor R3, capacitors C1~C3 and a three-terminal voltage regulator U1; as a specific implementation, the three-terminal voltage regulator U1 is implemented by using an existing three-terminal voltage regulator of model 78L05, the positive electrode (red line) of the diode D1 is connected to the positive electrode of the DC power supply, the negative electrode of the diode D1 is connected to the resistor R3 and one end of the capacitor C1 and the central processing unit 12, the other end of the resistor R3 is connected to the input end (pin 1) of the three-terminal voltage regulator U1, the output end (pin 3) of the three-terminal voltage regulator U1 is connected to one end of the capacitor C2 and the capacitor C3 and the central processing unit 12, and the ground end (pin 2) of the three-terminal voltage regulator U1 and the other ends of the capacitors C1, C2 and C3 are all grounded.

[0023] As a specific example, please refer to Figure 1 As shown, the central processing unit 12 includes a central processor JP1, a resistor R4, resistors R6 to R9, capacitors C4 and C5, and a control button S1 (corresponding to the start controller structure Figure 3 As a specific implementation, the central processor JP1 is implemented by a chip of existing model PIC12F615, the power supply end of the central processor JP1 is connected to the power supply adjustment unit 11, specifically, the positive power supply end (pin 1) of the central processor JP1 is connected to the output end of the three-terminal regulator U1 in the power supply adjustment unit 11, the negative power supply end (pin 8) of the central processor JP1 is connected to the ground end of the three-terminal regulator U1 in the power supply adjustment unit 11, the power supply monitoring end (pin 2) of the central processor JP1 is connected to the cathode of the diode D1 in the power supply adjustment unit 11 through the resistor R4 and the resistor R8, and the capacitor C4 is connected to one end of the resistor R7. The central processor JP1 is connected between the resistor R4 and the resistor R8, the operation control terminal (pin 3) of the central processor JP1 is connected to one end of the capacitor C5 and is connected to the output end of the three-terminal regulator U1 in the power adjustment unit 11 through the resistor R6 and the resistor R9, one end of the control button S1 is connected between the resistor R6 and the resistor R9, and the other ends of the control button S1, the capacitor C5, the capacitor C4 and the resistor R7 are all grounded; the start indication terminal (pin 6), the buffer indication terminal (pin 4) and the charging indication terminal (pin 7) of the central processor JP1 are all connected to the power state indication unit 13, and the execution start terminal (pin 5) of the central processor JP1 is connected to the start control output unit 14.

[0024] As a specific example, please refer to Figure 1As shown, the power state indicating unit 13 includes a resistor R5, resistors R11 and R12, and light emitting diodes LED1 to LED3. One end of the resistor R5, resistor R11 and R12 are respectively connected to the central processing unit 11. Specifically, one end of the resistor R5 is connected to the charging indicating terminal (pin 7) in the central processing unit 11, one end of the resistor R11 is connected to the start indicating terminal (pin 6) in the central processing unit 11, one end of the resistor R12 is connected to the buffer indicating terminal (pin 4) in the central processing unit 11, and the other end of the resistor R5 is grounded after passing through the light emitting diode LED1, the other end of the resistor R11 is grounded after passing through the light emitting diode LED2, and the other end of the resistor R12 is grounded after passing through the light emitting diode LED3. Of course, those skilled in the art can also integrate the light emitting diodes LED1 to LED3 into one LED lamp to achieve this, and this LED lamp has a three-color light emitting function.

[0025] As a specific example, please refer to Figure 1 As shown, the start control output unit 14 includes a resistor R2, a transistor Q2, a resistor R1, a resistor R10, a MOS transistor Q1 and a diode D2, one end of the resistor R2 is connected to the execution start end (pin 5) in the central processing unit 12, the other end of the resistor R2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R1 and the gate of the MOS transistor Q1, the source of the MOS transistor Q1 and the other end of the resistor R1 are connected to the positive electrode of the DC power supply, the emitter of the transistor Q2 is connected to the negative electrode of the DC power supply and the positive electrode (green line) of the diode D2, the negative electrode of the diode D2 is connected to the drain of the MOS transistor Q1 for outputting a start control signal, and specifically, the start control signal is connected to the start relay through the black / white line of the start controller 1.

[0026] The red line, green line and black / white line in the above specific embodiment together constitute the start controller structure Figure 3 In order to better understand the new electric start control and monitoring device for gasoline and diesel engines provided by the present application, the specific working principle of the device is now described as follows:

[0027] The power monitoring terminal (pin 2) of the central processor JP1 monitors the state of the DC power supply after the current limiting filter of the resistor R8, the resistor R7, the capacitor C4 and the resistor R4, such as the voltage signal. When the DC power supply is detected to be normal, the start indication terminal (pin 6) of the central processor JP1 outputs the start indication signal through the resistor R11 to light up the light-emitting diode LED2 (start indicator), prompting the user to press the control button S1 to start the machine normally. When the user presses the control button S1, the voltage at the output terminal of the three-terminal regulator U1 passes through the resistor R9 and the resistor R6 and enters the operation control terminal (pin 3) of the central processor JP1. After being processed internally by the central processor JP1, the execution start signal is output from the execution start terminal (pin 5) through the resistor R2 to turn on the transistor Q2. The conduction of the transistor Q2 will cause the MOS tube Q1 to be turned on, and the conduction of the MOS tube Q1 will transmit the power supply voltage of the DC power supply to the start relay through the black / white line of the start controller 1, and the start relay is attracted to make The gasoline and diesel engines start normally, which perfectly solves the problem of high physical requirements for users caused by manual starting with a manual pull-wire reel in the prior art; and after the machine is started, the buffer indication terminal (pin 4) of the central processor JP1 also outputs a buffer indication signal through the resistor R12 to light up the light-emitting diode LED3 (buffer indicator light), prompting the user to start the controller 1 to enter a buffer period of a predetermined time, so that the DC power supply with a large current discharge can recover its voltage during the buffer period. During this buffer period, the start controller 1 will protect the DC power supply so that the machine cannot be started. After the buffer is completed, the start indicator light will light up before it can be started again; when the power monitoring terminal (pin 2) of the central processor JP1 detects that the DC power supply state is abnormal or the voltage is too low, the charging indication terminal (pin 7) of the central processor JP1 outputs a charging indication signal through the resistor R5 to light up the light-emitting diode LED1 (charging indicator light), prompting the user to charge the DC power supply, and the machine can only be started normally after the charging is completed and the start indicator light up.

[0028] Compared with the prior art, the novel electric start control and monitoring device for gasoline and diesel engines provided by the utility model supplies power to the central processing unit through a DC power supply, and the central processing unit monitors the power status of the DC power supply. On the one hand, when the power status is normal, a start indication signal is output to the power status indication unit for start indication. At this time, the start indicator light is on, prompting the user to press the control button to start the machine normally. At the same time, the central processing unit outputs an execution start signal to the start control output unit, and the start control output unit outputs a start control signal accordingly to provide DC power to the start relay to attract so that the gasoline and diesel engines start normally. After the machine is started, the central processing unit The unit also outputs a buffer indication signal to the power status indication unit for buffer indication. At this time, the buffer indicator light is on, prompting the user to start the controller and enter a buffer period of a predetermined time, so that the DC power supply with large current discharge has a voltage recovery process during the buffer period. During this buffer period, the start controller will protect the DC power supply so that the machine cannot be started. After the buffer is completed, the start indicator light can be turned on before it can be started again; on the other hand, when the power status is abnormal or the voltage is low, a charging indication signal is output to the power status indication unit for charging indication. At this time, the charging indicator light is on, prompting the user to charge the DC power supply. It can only be started normally after the charging is completed and the start indicator light is turned on. Therefore, this device solves the problems of inconvenience of existing manual starting and the need for strong physical strength. It is very convenient to use. At the same time, it can monitor the power status of the DC power supply and display the power status through different indicator lights. It will not be able to start when the power supply is abnormal or the voltage is low, and there is a buffer period after starting to ensure that the DC power supply after large current discharge can effectively recover to the normal starting state to avoid excessive discharge and damage to the power supply.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A new type of electric starting control and monitoring device for gasoline and diesel engines, characterized in that: The invention comprises a DC power supply, a start controller and a start relay. The start controller is arranged inside a shell. The start controller comprises a power adjustment unit, a central processing unit provided with a control button, a power state indication unit and a start control output unit. The power adjustment unit is used to stabilize and adjust the DC power supply to supply power to the central processing unit; the central processing unit is used to monitor the power state of the DC power supply, output a start indication signal to prompt the user to press the control button to start and output an execution start signal when the power state is normal, and output a buffer indication signal after the machine is started to prompt the user that the start controller will not be able to start after entering a buffer period of a predetermined time, and output a charging indication signal to prompt the user to charge the DC power supply when the power state is abnormal or the voltage is low; the power state indication unit is used to light up the corresponding start, buffer and charging indicator lights according to the start indication signal, buffer indication signal and charging indication signal output by the central processing unit; the start control output unit is used to output a start control signal to provide the DC power supply to the start relay to attract and start the gasoline and diesel engines normally according to the execution start signal output by the central processing unit.

2. The new electric starting control and monitoring device for gasoline and diesel engines according to claim 1 is characterized in that: The DC power source is a lithium-ion battery.

3. The new electric starting control and monitoring device for gasoline and diesel engines according to claim 1 is characterized in that: The power supply adjustment unit includes a diode D1, a resistor R3, capacitors C1~C3 and a three-terminal voltage regulator U1, the positive electrode of the diode D1 is connected to the positive electrode of the DC power supply, the negative electrode of the diode D1 is connected to the resistor R3 and one end of the capacitor C1 and the central processing unit, the other end of the resistor R3 is connected to the input end of the three-terminal voltage regulator U1, the output end of the three-terminal voltage regulator U1 is connected to one end of the capacitor C2 and the capacitor C3 and the central processing unit, and the ground end of the three-terminal voltage regulator U1 and the other ends of the capacitors C1, C2 and C3 are all grounded.

4. The new electric starting control and monitoring device for gasoline and diesel engines according to claim 1 is characterized in that: The central processing unit includes a central processing unit JP1, a resistor R4, resistors R6-R9, capacitors C4 and C5, and a control button S1. The power supply end of the central processing unit JP1 is connected to the power supply adjustment unit, the power supply monitoring end of the central processing unit JP1 is connected to the power supply adjustment unit through the resistor R4 and the resistor R8, one end of the capacitor C4 and the resistor R7 are connected between the resistor R4 and the resistor R8, the operation control end of the central processing unit JP1 is connected to one end of the capacitor C5 and is connected to the power supply adjustment unit through the resistor R6 and the resistor R9, one end of the control button S1 is connected between the resistor R6 and the resistor R9, and the other ends of the control button S1, the capacitor C5, the capacitor C4, and the resistor R7 are all grounded; the start indication end, the buffer indication end, and the charging indication end of the central processing unit JP1 are all connected to the power supply state indication unit, and the execution start end of the central processing unit JP1 is connected to the start control output unit.

5. The new electric starting control and monitoring device for gasoline and diesel engines according to claim 1 is characterized in that: The power status indicating unit includes a resistor R5, resistors R11 and R12, and light-emitting diodes LED1 to LED3. One ends of the resistor R5, resistors R11 and R12 are respectively connected to the central processing unit, the other end of the resistor R5 is grounded via the light-emitting diode LED1, the other end of the resistor R11 is grounded via the light-emitting diode LED2, and the other end of the resistor R12 is grounded via the light-emitting diode LED3.

6. The new electric starting control and monitoring device for gasoline and diesel engines according to claim 1 is characterized in that: The startup control output unit includes a resistor R2, a transistor Q2, a resistor R1, a resistor R10, a MOS transistor Q1 and a diode D2, one end of the resistor R2 is connected to the central processing unit, the other end of the resistor R2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R1 and the gate of the MOS transistor Q1, the source of the MOS transistor Q1 and the other end of the resistor R1 are connected to the positive electrode of the DC power supply, the emitter of the transistor Q2 is connected to the negative electrode of the DC power supply and the positive electrode of the diode D2, and the negative electrode of the diode D2 is connected to the drain of the MOS transistor Q1 for outputting a startup control signal.

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