A Fuzzy Control Type Starter Protector

Abstract

The present invention relates to a fuzzy control type starting protector, comprising a controllable reference voltage stabilizing source D3, a charging capacitor C1, a voltage stabilizing tube D1, a charging resistor R1, a charging resistor R2, a switch circuit and a relay J; the reference end of the controllable reference voltage stabilizing source D3 is electrically connected to the positive electrode of a starting power source POW through the charging resistors R2 and R1 in sequence, and is electrically connected to the negative electrode of the starting power source POW through the charging capacitor C1, the voltage stabilizing tube D1 is connected in parallel with the charging resistor R2, the anode of the controllable reference voltage stabilizing source D3 is electrically connected to the cathode of the starting power source POW, the cathode of the controllable reference voltage stabilizing source D3 is electrically connected to one end of the relay J through the resistor R5, and is electrically connected to the other end of the relay J through the switch circuit, the relay J is electrically connected to the starting power source POW, the switch circuit is controlled by the controllable reference voltage stabilizing source D3, and the switch control of the relay J is realized. The present invention has the technical effects of good starting protection effect, simple circuit structure and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of starter protectors, in particular to a fuzzy control type starter protector. Background Art

[0002] The engine in a traditional vehicle needs to be started by the starter before it can start running autonomously. The starter is a short-time working system. It only takes a few seconds to start the engine normally, and the longest working time is 30 seconds. Otherwise, it will overheat and burn. Therefore, a time limit protector is usually installed on the starter control relay to limit the working time of the starter and extend the life of the starter.

[0003] At present, the failure rate of commercial vehicle starters due to abnormal reasons is relatively high. In order to reduce the failure rate of starters, some commercial vehicles have begun to gradually install various starter protectors on the starters. Some of the existing starter protectors have relatively simple functions and limited protection effects, while some have more functions, but the circuits are complex, the cost is relatively high, and the protection effect is not much improved.

[0004] Existing starter protectors are mainly divided into two categories:

[0005] One type is a single-function time-limited type. For example, the Chinese patent with patent number CN201120433675.7 discloses a time-limited starting protector, whose single starting time is limited to between 20 and 30 seconds. If an ignition starting abnormality occurs, the starting power supply will be forcibly disconnected for a maximum of 30 seconds. Even if the engine has started, it will be reversed for 30 seconds before the power is cut off. Obviously, this reverse drag process is harmful to the starter.

[0006] The other type is multifunctional. For example, Chinese patent number CN201210042539.4 discloses a starter intelligent starting protection system that can determine the engine's operating condition by monitoring the vehicle's power supply voltage. When the engine is successfully ignited, the power supply voltage will slowly rise to the set voltage point, such as 24V, and the starting power supply will be disconnected based on this.

[0007] The second type of multifunctional protector generally uses single-chip microcomputer programming to control the starting process. Its circuit structure is often complex and costly. In addition, there are certain difficulties in setting the voltage point to determine whether the engine ignites successfully. If the voltage is set too high, it is difficult to reach the voltage, resulting in a long working time for the starter and poor anti-reverse drag effect. If the voltage point is set too low, it is easy to cause false protection. For example, sometimes there is an oscillation situation where the engine is not completely started. Although the voltage point is reached in a short time, it is not really started. This will cause premature power failure and false protection. In addition, the voltage of the vehicle battery is low after aging, and the voltage rise recovery time after the engine starts becomes longer, and it may even never reach the set point voltage. Therefore, setting a fixed voltage point to judge whether the ignition is successful to cut off the starting power supply has limited effect. Summary of the invention

[0008] In view of this, the present invention provides a fuzzy control type starter protector to solve the technical problems that the existing starter protector sets a certain voltage point for judgment and protection, has limited protection effect, and has complex circuits and high costs.

[0009] In order to solve the above problems, the present invention provides a fuzzy control type starter protector, including a controllable reference voltage source D3, a charging capacitor C1, a voltage regulator tube D1, a charging resistor R1, a charging resistor R2, a switch circuit and a relay J;

[0010] The reference end of the controllable reference voltage-stabilizing source D3 is electrically connected to the positive electrode of the starting power supply POW through the charging resistor R2 and the charging resistor R1 in turn, and is electrically connected to the negative electrode of the starting power supply POW through the charging capacitor C1. The voltage-stabilizing tube D1 is connected in parallel with the charging resistor R2. The anode of the controllable reference voltage-stabilizing source D3 is electrically connected to the cathode of the starting power supply POW. The cathode of the controllable reference voltage-stabilizing source D3 is electrically connected to one end of the relay J through the resistor R5, and is electrically connected to the other end of the relay J through the switching circuit. The relay J is electrically connected to the starting power supply POW. The switching circuit is controlled by the controllable reference voltage-stabilizing source D3, and realizes the switching control of the relay J.

[0011] Optionally, an ignition switch Key is further included, and the charging resistor R1 is electrically connected to the positive electrode of the starting power supply POW through the ignition switch Key.

[0012] Optionally, one end of the relay J electrically connected to the resistor R5 is electrically connected to the anode of the starting power supply POW.

[0013] Optionally, the switching circuit is implemented using a fully-controlled device, the cathode of the controllable reference voltage regulator D3 is electrically connected to the gate of the fully-controlled device, the anode of the fully-controlled device is electrically connected to the relay J, the cathode of the fully-controlled device is electrically connected to the cathode of the starting power supply POW, and the relay J is electrically connected to the anode of the starting power supply POW.

[0014] Optionally, the switch circuit includes two fully-controlled devices, namely a fully-controlled device Q1 and a fully-controlled device Q2;

[0015] The cathode of the adjustable reference voltage source D3 is electrically connected to the gate of the fully-controlled device Q2 through the voltage regulator tube D5, the anode of the fully-controlled device Q2 is electrically connected to the anode of the starting power supply POW through the resistor R6, the cathode of the fully-controlled device Q2 is electrically connected to the cathode of the starting power supply POW through the voltage regulator tube D6, the resistor R7 is connected in parallel with the voltage regulator tube D6, the cathode of the fully-controlled device Q2 is also electrically connected to the gate of the fully-controlled device Q1, the anode of the fully-controlled device Q1 is electrically connected to the anode of the starting power supply POW through the relay J, and the cathode of the fully-controlled device Q1 is electrically connected to the cathode of the starting power supply POW.

[0016] Optionally, a voltage regulator tube D7 is further included, the anode of the fully-controlled device Q1 is electrically connected to the anode of the voltage regulator tube D7, and the cathode of the voltage regulator tube D7 is electrically connected to the anode of the starting power supply POW.

[0017] Optionally, the fully-controlled device is any one of a gate turn-off thyristor, a power field effect transistor, and an insulated gate bipolar transistor.

[0018] Optionally, the voltage regulator tube D1 is a voltage regulator tube with a voltage regulation value within 18-22V.

[0019] Optionally, the adjustable reference voltage source D3 is an adjustable reference voltage source with a reference voltage of 2.5V.

[0020] Optionally, the model of the controllable reference voltage source D3 is TL431.

[0021] The beneficial effects of the present invention are as follows: the present invention uses the idea of ​​fuzzy control to replace the precise sampling and delay circuit control mode, specifically: the on-off of the controllable reference voltage regulator D3 is controlled by the charging voltage of the charging capacitor C1, and then the power on and off of the relay J is controlled, and the starting control is realized by replacing the control device, which is low in cost. At the same time, the charging speed is adjusted by the state of the voltage regulator tube D1, and the state of the voltage regulator tube D1 is affected by the power supply voltage, so the charging speed of the charging capacitor C1 is also affected by the power supply voltage. When the power supply voltage is low, the charging speed is slow, that is, the delay time is long; when the power supply voltage is high, the charging speed is fast, that is, the delay time is short. The delay time has nothing to do with the absolute value of the power supply voltage, but is related to the overall high and low changes of the power supply voltage. In other words, the power supply voltage is relatively high in the active start stage after the engine is started, and the delay in this stage is short, indicating that the protector has an anti-reverse drag function; the low voltage stage indicates that the engine has not started, and has been in the dead start stage where the starter drags the engine to rotate, and the delay time in this stage is long, which just meets the actual needs of the engine. This circuit design just fits the law of vehicle starting power supply change, so its protection effect is better than setting a fixed delay time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A circuit diagram of an embodiment of a fuzzy control type starter protector provided by the present invention;

[0023] Figure 2 A curve diagram showing the relationship between the time limit and the power supply voltage of an embodiment of the fuzzy control type starter protector provided by the present invention;

[0024] Figure 3 A vehicle starting process curve diagram of an embodiment of the fuzzy control type starting protector provided by the present invention. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] like Figure 1 As shown, this embodiment provides a fuzzy control type starter protector, including a controllable reference voltage source D3, a charging capacitor C1, a voltage regulator tube D1, a charging resistor R1, a charging resistor R2, a switch circuit K100 and a relay J;

[0029] The reference end of the controllable reference voltage-stabilizing source D3 is electrically connected to the positive electrode of the starting power supply POW through the charging resistor R2 and the charging resistor R1 in turn, and is electrically connected to the negative electrode of the starting power supply POW through the charging capacitor C1. The voltage-stabilizing tube D1 is connected in parallel with the charging resistor R2. The anode of the controllable reference voltage-stabilizing source D3 is electrically connected to the cathode of the starting power supply POW. The cathode of the controllable reference voltage-stabilizing source D3 is electrically connected to one end of the relay J through the resistor R5, and is electrically connected to the other end of the relay J through the switching circuit. The relay J is electrically connected to the starting power supply POW. The switching circuit K100 is controlled by the controllable reference voltage-stabilizing source D3, and realizes the switching control of the relay J.

[0030] The present invention proposes a new idea, that is, to replace the precise sampling and delay circuit control mode with the idea of ​​fuzzy control.

[0031] The specific implementation is: a controllable reference voltage regulator D3 is used to replace the control device, such as a single chip microcomputer to realize the switch control of the relay J, and then realize the starting control. The reference electrode of the controllable reference voltage regulator D3 is electrically connected to the charging capacitor C1, and the charging voltage of the charging capacitor C1 is related to the on and off of the controllable reference voltage regulator D3. The starting power supply POW charges the charging capacitor C1 through the charging resistor R1, the charging resistor R2 and the voltage regulator D1. Since the state of the voltage regulator D1 is affected by the power supply voltage, the speed at which the starting power supply POW charges the charging capacitor C1 is also affected by the power supply voltage. Specifically, when the power supply voltage is low, the starting power supply POW charges the charging capacitor C1 through the charging resistor R1, the charging resistor R2 and the voltage regulator D1. The charging speed is limited by the charging resistor R1, the charging resistor R2 and the voltage regulator D1, and the charging speed is slow, that is, the delay time is long; when the power supply voltage is high, the voltage regulator diode is partially broken down, and the resistor R1 is almost in a short-circuited state, so the charging speed is only affected by the charging resistor R2, and the charging speed is fast, that is, the delay time is short. During the vehicle starting process, the power supply voltage changes in real time, and the delay time is adjusted accordingly with the change of the power supply voltage, thereby realizing follow-up control. The delay time has nothing to do with the absolute value of the power supply voltage, but is related to the overall high and low changes of the power supply voltage.

[0032] The specific working process is as follows: when the starting power supply POW is powered on, the voltage at the charging capacitor C1 is 0, that is, the reference terminal voltage of the controllable reference voltage source D3 is 0, so the controllable reference voltage source D3 is in the cut-off state, the starting power supply POW turns on the switch circuit K100, and the relay J is closed;

[0033] When the power supply voltage is high, for example, higher than 20V, the voltage regulator D1 will be in a partial breakdown state. Then the speed at which the starting power supply POW charges the charging capacitor C1 through the charging resistor R1, the charging resistor R2 and the voltage regulator D1 is much faster than when it is lower than 20V. The charging speed mainly depends on the charging resistor R1, and has little to do with the charging resistor R2. The higher the power supply voltage, the faster the charging. When the charging capacitor C1 voltage is charged to the reference voltage of the controllable reference voltage regulator D3, for example, 2.5V, the cathode of the controllable reference voltage regulator D3 will jump from a high potential to a low potential, the switch circuit K100 is disconnected, and the relay J is powered off. This is why the delay time is shorter when the power supply voltage is higher. In other words, the power supply voltage is relatively high during the active starting stage after the engine starts, and the delay in this stage is short, indicating that the protector has an anti-reverse drag function;

[0034] When the power supply voltage is low, for example, below 20V, the circuit for charging the charging capacitor C1 only has charging resistors R1 and R2 in series, and lacks the branch of the voltage regulator D1. The charging speed is much slower and conforms to the exponential law. When the voltage is charged to the reference voltage of the controllable reference voltage regulator D3, for example, 2.5V, the cathode of the controllable reference voltage regulator D3 will jump from high potential to low potential, the switch circuit K100 is disconnected, and the relay J is powered off. This low voltage stage indicates that the engine has not started and has been in the dead start stage where the starter drags the engine to rotate. The delay time in this stage is relatively long, which just meets the actual needs of the engine.

[0035] Based on the description of the above working process, it can be known that the fuzzy control type starting protector provided in this embodiment, the power supply voltage determines the speed of charging the charging capacitor C1. The general trend is that the higher the power supply voltage, the faster the charging speed and the shorter the delay time; the lower the power supply voltage, the slower the charging speed and the longer the delay time. However, the specific delay time is not a constant, because in the actual vehicle starting process, the power supply voltage is constantly changing, but the general trend is: the voltage is low during dead start and the voltage is high during live start. Specifically, dead start refers to the starter rotating with the engine, and live start refers to the process in which the engine has been started but the starter is not powered off and is dragged by the engine. Such a circuit design just fits the law of vehicle starting power supply changes, so its protection effect is better than setting a fixed delay time.

[0036] At the same time, when the ambient temperature is low, the starting current is often larger and the power supply voltage is lower, and the starting time is also longer. Since the power supply voltage is low when the ambient temperature is low, the fuzzy control type starting protector provided in this embodiment just makes the delay time longer, which meets the actual starting requirements.

[0037] In one embodiment, if Figure 1 As shown, an ignition switch Key is also included, and the charging resistor R1 is electrically connected to the positive electrode of the starting power supply POW through the ignition switch Key.

[0038] The ignition switch Key is used to connect or disconnect the starting power POW to realize the starting switch control.

[0039] In one embodiment, if Figure 1 As shown, one end of the relay J electrically connected to the resistor R5 is electrically connected to the anode of the starting power source POW.

[0040] The resistor R5 is used to limit the current to prevent the controllable reference voltage source D3 from having an excessive current.

[0041] In one embodiment, the switch circuit K100 is implemented using a fully controlled device, the cathode of the controllable reference voltage regulator D3 is electrically connected to the gate of the fully controlled device, the anode of the fully controlled device is electrically connected to the relay J, the cathode of the fully controlled device is electrically connected to the cathode of the starting power supply POW, and the relay J is electrically connected to the anode of the starting power supply POW.

[0042] The fully controlled device is also called a self-shutoff device, which can be controlled to be turned on and off by a control signal. Therefore, it is suitable for application in this embodiment to realize the power-on and power-off control of the relay J. The fully controlled device is controlled by the on-off state change of the controllable reference voltage regulator D3, thereby realizing the on-off control between the relay J and the starting power supply POW, and realizing the starting protection.

[0043] In one embodiment, if Figure 1 As shown, the switch circuit K100 includes two fully-controlled devices, namely, a fully-controlled device Q1 and a fully-controlled device Q2;

[0044] The cathode of the adjustable reference voltage source D3 is electrically connected to the gate of the fully-controlled device Q2 through the voltage regulator tube D5, the anode of the fully-controlled device Q2 is electrically connected to the anode of the starting power supply POW through the resistor R6, the cathode of the fully-controlled device Q2 is electrically connected to the cathode of the starting power supply POW through the voltage regulator tube D6, the resistor R7 is connected in parallel with the voltage regulator tube D6, the cathode of the fully-controlled device Q2 is also electrically connected to the gate of the fully-controlled device Q1, the anode of the fully-controlled device Q1 is electrically connected to the anode of the starting power supply POW through the relay J, and the cathode of the fully-controlled device Q1 is electrically connected to the cathode of the starting power supply POW.

[0045] In this embodiment, two fully-controlled devices are provided to form a switch circuit K100 to realize the control of the relay J.

[0046] The specific working principle is: when the starting power supply POW is powered on, the voltage at the charging capacitor C1 is 0, that is, the reference terminal voltage of the controllable reference voltage regulator D3 is 0, so the controllable reference voltage regulator D3 is in the cut-off state, and the starting power supply POW passes through the resistor R5 and the voltage regulator D5 to turn on the fully controlled device Q2, and then the gate of the fully controlled device Q1 is at a high potential and turned on, and the relay J is attracted;

[0047] In this embodiment, the voltage stabilization value of the voltage regulator D1 is set to 20V, and the voltage regulator D1 and the charging resistor R2 are in parallel. When the power supply voltage is higher than 20V, the voltage regulator D1 will be in a partial breakdown state. Then the speed at which the starting power supply POW charges the charging capacitor C1 through the charging resistor R1, the charging resistor R2 and the voltage regulator D1 is much faster than when it is lower than 20V. The charging speed mainly depends on the charging resistor R1, and has little to do with the charging resistor R2. The higher the power supply voltage, the faster the charging. When the charging capacitor C1 voltage exceeds 2.5V, the cathode of the controllable reference voltage regulator D3 will jump from a high potential to a low potential. After the cathode of the voltage regulator D5 becomes a low level, the fully controlled device Q2 turns off, the gate of the fully controlled device Q1 loses power and turns off, and the relay J is powered off; therefore, when the power supply voltage is higher, the delay time is shorter. In other words, the power supply voltage is relatively high during the active starting stage after the engine starts, and the delay in this stage is relatively short, indicating that the protector has an anti-reverse drag function;

[0048] When the power supply voltage is low, such as below 20V, the circuit for charging the charging capacitor C1 only has charging resistors R1 and R2 in series, and lacks the branch of the voltage regulator D1. The charging speed is much slower and conforms to the exponential law. When the voltage is charged to 2.5V, the cathode of the controllable reference voltage regulator D3 will jump from high potential to low potential. After the cathode of the voltage regulator D5 becomes low level, the fully controlled device Q2 turns off, the gate of the fully controlled device Q1 loses power and turns off, and the relay J is powered off. This low voltage stage indicates that the engine has not started, and has been in the dead start stage where the starter drags the engine to rotate. The delay time of this stage is relatively long, which just meets the actual needs of the engine.

[0049] Specifically, Figure 2 The figure shows the relationship curve between the delay time and the power supply voltage of the fuzzy control type starter protector provided in this embodiment. Figure 2 It can be seen from the middle curve that the delay time is negatively correlated with the power supply voltage. Figure 3 The figure shows the actual curve of the starter motor during normal ignition operation. When the ignition lock is closed, the power supply voltage drops from 24V to a little over 10V instantly, the starter motor starts to rotate the engine flywheel, and then the current gradually decreases from the maximum value, while the power supply voltage gradually rises. This is the normal law of the starter motor when starting the engine. Figure 3 It can be seen that when the starter starts the engine, the higher the power supply voltage is, the closer the engine is to ignition success, and the less time is needed to start. Obviously, the negative correlation between the starter delay time and the power supply voltage in this embodiment just matches the actual working condition requirements of the starter, that is, the higher the power supply voltage is, the shorter the delay time is, and the shorter the time the starter is dragged by the engine, and the better the protection effect is. At the same time, since the control strategy does not involve precise parameters, it is all qualitatively controlled by trends, so it is named fuzzy control type.

[0050] In the actual vehicle test, the time-limited protection effect of the fuzzy control type starter protector provided by this embodiment is much better than that of the traditional protector. In the normal starting process, the ignition operation is long, and the ignition can be forced to be disconnected 2 to 3 seconds after the engine starts, while the traditional protector needs more than ten seconds to cut off the power. If the starting power supply is aged and the voltage recovery rises more slowly, the traditional starter is almost impossible to reach the preset voltage point, so it must be delayed to 30 seconds before cutting off the power; while the fuzzy control type starter protector of the present invention will only slightly delay the power off according to the actual power supply voltage.

[0051] In one embodiment, if Figure 1 As shown, it also includes a voltage regulator tube D7, the anode of the fully controlled device Q1 is electrically connected to the anode of the voltage regulator tube D7, and the cathode of the voltage regulator tube D7 is electrically connected to the anode of the starting power supply POW.

[0052] The voltage regulator D7 is used to stabilize the voltage across the relay J.

[0053] In one embodiment, the fully-controlled device is any one of a gate turn-off thyristor, a power field effect transistor, and an insulated gate bipolar transistor.

[0054] In one embodiment, the voltage regulator tube D1 is a voltage regulator tube with a voltage regulation value within 18-22V.

[0055] The voltage regulator D1 used in this embodiment has a voltage regulation value of 20V.

[0056] In one embodiment, the adjustable reference voltage source D3 is an adjustable reference voltage source with a reference voltage of 2.5V.

[0057] In one embodiment, the controllable reference voltage source D3 is of model TL431.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A fuzzy control type starter protector, characterized in that: It includes a controllable reference voltage source D3, a charging capacitor C1, a voltage regulator tube D1, a charging resistor R1, a charging resistor R2, a switch circuit and a relay J; The reference end of the controllable reference voltage-stabilizing source D3 is electrically connected to the positive electrode of the starting power supply POW through the charging resistor R2 and the charging resistor R1 in turn, and is electrically connected to the negative electrode of the starting power supply POW through the charging capacitor C1. The voltage-stabilizing tube D1 is connected in parallel with the charging resistor R2. The anode of the controllable reference voltage-stabilizing source D3 is electrically connected to the cathode of the starting power supply POW. The cathode of the controllable reference voltage-stabilizing source D3 is electrically connected to one end of the relay J through the resistor R5, and is electrically connected to the other end of the relay J through the switching circuit. The relay J is electrically connected to the starting power supply POW. The switching circuit is controlled by the controllable reference voltage-stabilizing source D3, and realizes the switching control of the relay J.

2. The fuzzy control type starter protector according to claim 1, characterized in that: It also includes an ignition switch Key, and the charging resistor R1 is electrically connected to the positive electrode of the starting power supply POW through the ignition switch Key.

3. The fuzzy control type starter protector according to claim 1, characterized in that: One end of the relay J electrically connected to the resistor R5 is electrically connected to the anode of the starting power source POW.

4. The fuzzy control type starter protector according to claim 1, characterized in that: The switching circuit is implemented using a fully controlled device, the cathode of the controllable reference voltage regulator D3 is electrically connected to the gate of the fully controlled device, the anode of the fully controlled device is electrically connected to the relay J, the cathode of the fully controlled device is electrically connected to the cathode of the starting power supply POW, and the relay J is electrically connected to the anode of the starting power supply POW.

5. The fuzzy control type starter protector according to claim 4, characterized in that: The switch circuit includes two fully-controlled devices, namely a fully-controlled device Q1 and a fully-controlled device Q2; The cathode of the controllable reference voltage source D3 is electrically connected to the gate of the fully-controlled device Q2 through the voltage regulator tube D5, the anode of the fully-controlled device Q2 is electrically connected to the anode of the starting power supply POW through the resistor R6, the cathode of the fully-controlled device Q2 is electrically connected to the cathode of the starting power supply POW through the voltage regulator tube D6, the resistor R7 is connected in parallel with the voltage regulator tube D6, the cathode of the fully-controlled device Q2 is also electrically connected to the gate of the fully-controlled device Q1, the anode of the fully-controlled device Q1 is electrically connected to the anode of the starting power supply POW through the relay J, and the cathode of the fully-controlled device Q1 is electrically connected to the cathode of the starting power supply POW.

6. The fuzzy control type starter protector according to claim 5, characterized in that: It also includes a voltage regulator tube D7, the anode of the fully-controlled device Q1 is electrically connected to the anode of the voltage regulator tube D7, and the cathode of the voltage regulator tube D7 is electrically connected to the anode of the starting power supply POW.

7. The fuzzy control type starter protector according to claim 4, characterized in that: The fully controlled device is any one of a gate turn-off thyristor, a power field effect transistor, and an insulated gate bipolar transistor.

8. The fuzzy control type starter protector according to claim 1, characterized in that: The voltage regulator tube D1 is selected to have a voltage regulation value within 18-22V.

9. The fuzzy control type starter protector according to claim 1, characterized in that: The controllable reference voltage source D3 is a controllable reference voltage source with a reference voltage of 2.5V.

10. The fuzzy control type starter protector according to claim 1, characterized in that: The model of the controllable reference voltage source D3 is TL431.

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