Full-automatic intelligent start protection integrated controller

Abstract

The invention discloses a full-automatic intelligent starting protection integrated controller which comprises a starter and an original vehicle starting relay, a slow meshing starting relay is connected to the starter, and the positive electrode of the output of the original vehicle starting relay is connected to the positive electrode of the slow meshing starting relay. The negative electrode of the slow meshing starting relay is electrically connected with a starting protection controller, and the starting protection controller comprises a frequency voltage conversion chip, a potentiometer, a divider resistor, a forced starting switch, an operational amplifier, a signal relay, a field effect transistor and a 555 timer. By the adoption of the structure, a rotating speed signal of the generator on an automobile can be received through the frequency voltage conversion chip, the potentiometer controls the starter to stop working in advance when the speed of the generator is lower than the idling speed, and the abrasion of the starter is reduced to the maximum extent. By arranging the eight fault display lamps, a worker can be helped to quickly and accurately find out fault parts.

Description

Technical Field

[0001] The invention relates to the technical field of starter starting protection, and in particular to a full-automatic intelligent starting protection integrated controller. Background Art

[0002] The starter on the car may work for a long time due to various reasons, such as difficulty in starting in winter, or abnormal operation of the starter caused by a short circuit in the body line, or it may burn out due to long-term work. The above situations are commonly known as starting failures caused by various reasons such as following the turn. So far, the starting control strategy of the original car is half manually controlled by the ignition switch, and half is controlled by the on-board computer or generator. The first type of manual control by the ignition switch is to start the vehicle for a long time exceeding 20 seconds or even 30 seconds, which will cause the starter to heat up or even burn out, and as the age of the vehicle increases, the body line will inevitably have short circuits and other faults, which will lead to no response at start or the starter will accidentally follow and burn out without the driver's knowledge.

[0003] The second type is controlled by the body computer or generator computer. Most of these are designed and configured by the vehicle's main engine manufacturer, but this type of control strategy still has major flaws. The first is that the circuit is complex and the failure rate is high. Many times, the vehicle cannot be started because of a problem with an inconspicuous wire or sensor. The driver can only connect the starter directly to the vehicle for normal operation. This method has huge risks. Moreover, even a starter controlled by a computer cannot avoid the fate of burning the starter due to a circuit failure. Although the starter usually works for a short time, the failure rate of the starter remains high. Even if the starter is well maintained, it is inevitable that the starter will not respond to starting or accidentally burn out on the road. And most drivers do not have the awareness of maintaining the starter. In a starter in normal use, when repairing a starter without starting protection, it will be found that various components of the starter, such as bearings, gears, stators and rotors, will have very large wear, which seriously affects the safety and stability of the starter.

[0004] The starting protection device in the prior art has only two control modes, high control or low control, no matter it is a starter controlled by an ignition switch or a starter controlled by a computer. The high control is to connect the shell of the slow-engaging starting relay to the negative pole and control the starter to work by a high-level signal, and the low control is that the slow-engaging starting relay is controlled by two wires, which are controlled by two wires output by the computer, one wire is a normally high-level wire, and the other wire is controlled by a low-level signal output by the computer; however, no matter which control strategy is used, it is inevitable to avoid unexpected operation caused by vehicle body circuit failure, such as the high-control starter circuit accidentally connected to the positive pole, or the low-control starter circuit is damaged and short-circuited, etc. In daily maintenance, it is often encountered that the starter with the starting protection mode cannot avoid accidental burning. It can be seen that the starter controlled by the computer cannot avoid burning.

[0005] Therefore, a fully automatic intelligent startup protection integrated controller has become an urgent problem to be solved by the whole society. Summary of the invention

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is: a fully automatic intelligent start protection integrated controller, including a starter and an original vehicle start relay, the starter is connected to a slow engagement start relay, the positive pole of the original vehicle start relay output is connected to the positive pole of the slow engagement start relay, the negative pole of the slow engagement start relay is electrically connected to a start protection controller, the start protection controller includes a frequency voltage conversion chip, a potentiometer, a voltage divider resistor, a forced start switch, an operational amplifier, a signal relay, a field effect transistor and a 555 timer, the voltage divider resistor is used to be electrically connected to the operational amplifier, the voltage divider resistor is used to be connected to the pin of the start protection controller, the output end of the operational amplifier is used to connect the signal relay, the signal relay is used to be connected to the field effect transistor, the pin of the start protection controller receives a start signal, a signal passes through the voltage divider resistor and enters the operational amplifier, and enters the signal relay after the operational amplifier signal is amplified, and the signal relay controls the slow engagement start relay to work through the field effect transistor;

[0007] Another signal enters the 555 timer, and the capacitor is charged simultaneously through the 555 timer. After being fully charged, the 555 timer outputs a voltage control signal, and relay 1 cuts off the gate input of the field effect tube to achieve delayed protection.

[0008] Furthermore, the output voltage of the 555 timer is connected to a signal relay, and the signal relay is used to connect to a field effect transistor.

[0009] Furthermore, pin No. 1 of the frequency-voltage conversion chip is electrically connected to the w-pole No. 4 lead of the generator, and the frequency-voltage conversion chip is used to convert the frequency signal output by the w-pole No. 4 lead of the generator into a voltage signal.

[0010] Furthermore, the output end of the frequency-to-voltage conversion chip is used to connect to pin No. 3 of the operational amplifier, and pin No. 2 of the operational amplifier is used to connect to a potentiometer.

[0011] Furthermore, a 12095 electromagnetic buzzer is electrically connected to the signal relay.

[0012] Furthermore, the startup protection controller is provided with a first LED indicator light, a second LED indicator light, a third LED indicator light, a fourth LED indicator light, a fifth LED indicator light, a sixth LED indicator light, a seventh LED indicator light and an eighth LED indicator light. The first LED indicator light is used to be connected to the ON position of the ignition switch to display whether the ignition switch is working normally. The second LED indicator light is used to be connected to the start position of the ignition switch to serve as an ignition switch start indication. The third LED indicator light is used to be connected to the start relay to serve as a start relay start indication. The fourth LED indicator light is used to be connected to the output control end of the slow-engagement start relay to serve as a slow-engagement start relay start indication. The fifth LED indicator light is used to be connected to the output end of the magnetic switch to serve as a magnetic switch working indication. The sixth LED indicator light is used to be connected in parallel with the generator speed signal and pin 1 of the frequency-voltage conversion chip to serve as a speed signal indication. The seventh LED indicator light is connected to the output end of the relay K6 to serve as a startup protection indication. The eighth LED indicator light is lit by the forced start switch control switch opening indicator light to serve as a forced start indication.

[0013] The advantages of the invention compared with the prior art are:

[0014] The present invention adopts a combination of multiple structures such as a frequency voltage conversion chip, a potentiometer, a voltage dividing resistor, a forced start switch, an operational amplifier, a signal relay, a field effect tube and a 555 timer, and can receive the speed signal of the generator on the car through the frequency voltage conversion chip, and control the starter through the potentiometer to stop working early when the generator is running below the idle speed, thereby minimizing the wear of the starter and solving the problem of winter starting difficulties in the prior art. Through the above-mentioned structural setting, the higher the generator speed, the higher the output voltage. The driver can adjust the analog voltage to make the analog voltage lower than the voltage converted from the generator speed. After the generator is started, the voltage converted from the generator speed is higher than the analog voltage, so when the generator enters the idle state, the starter will not be controlled to work abnormally for any reason.

[0015] The present invention changes the slow-engagement starting relay in the prior art from high-end control to two-end control, so that the starting negative pole output by the starting protection controller is independent of the generator, and thus the failure rate of the starting protection controller is extremely low during use.

[0016] The present invention can accurately control the working time of the starter by arranging a 555 timer inside the starting protection controller.

[0017] The present invention provides a forced start switch, and when a problem occurs in the vehicle body circuit and the starter does not respond, the forced start switch can be turned on to allow the ignition switch to directly control the starter to work, thereby avoiding losses caused by problems in the start circuit.

[0018] The present invention is provided with 8 fault display lights, which can accurately prompt whether each component in the starting circuit is working normally, thereby solving the problem in the prior art that maintenance personnel cannot quickly and accurately find the corresponding fault. The above-mentioned fault display lights can help personnel quickly and accurately find the faulty components, saving the maintenance time of the personnel and improving the maintenance efficiency of the personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a circuit board of a fully automatic intelligent startup protection integrated controller of the present invention;

[0020] Figure 2 The present invention is a circuit control schematic diagram of a fully automatic intelligent startup protection integrated controller.

[0021] Among them, 1. frequency-voltage conversion chip, 2. potentiometer, 3. forced start switch, 4. operational amplifier, 5. signal relay, 6. field effect tube, 7. 555 timer, 8. first LED indicator, 9. second LED indicator, 10. third LED indicator, 11. fourth LED indicator, 12. fifth LED indicator, 13. sixth LED indicator, 14. seventh LED indicator, 15. eighth LED indicator, 16. timer, 17. 12095 electromagnetic buzzer. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] The present invention is described in detail with reference to the accompanying drawings.

[0024] The present invention provides a fully automatic intelligent start protection integrated controller in specific implementation, including a starter and an original vehicle start relay, the starter is connected to a slow engagement start relay, the positive pole of the original vehicle start relay output is connected to the positive pole of the slow engagement start relay, the negative pole of the slow engagement start relay is electrically connected to a start protection controller, the start protection controller includes a frequency voltage conversion chip 1, a potentiometer 2, a voltage divider resistor, a forced start switch 3, an operational amplifier 4, a signal relay 5, a field effect tube 6 and a 555 timer 7, the voltage divider resistor is used to be electrically connected to the operational amplifier 4, the voltage divider resistor is used to be connected to the pin of the start protection controller, the output end of the operational amplifier 4 is used to connect the signal relay 5, the signal relay 5 is used to be connected to the field effect tube 6, the pin of the start protection controller receives a start signal, a signal enters the operational amplifier 4 through the voltage divider resistor, and enters the signal relay 5 after the signal is amplified by the operational amplifier 4, and the signal relay 5 controls the slow engagement start relay to work through the field effect tube 6;

[0025] Another signal enters the 555 timer 7, and the capacitor is charged simultaneously through the 555 timer 7. After being fully charged, the 555 timer 7 outputs a voltage control signal relay 5 to cut off the gate input of the field effect tube to achieve delayed protection.

[0026] Embodiment 1:

[0027] When the present invention is working, the slow-engagement starting relay in the prior art is changed from high-end control to two-end control. The specific connection is that the positive pole output by the original vehicle starting relay is connected to the positive pole of the slow-engagement starting relay, and the negative pole of the slow-engagement starting relay is electrically connected to the starting protection controller, so that the protection strategies such as the neutral protection of the original vehicle are not cancelled.

[0028] The pin of the start protection controller receives the W-pole speed signal output by the AC generator on the vehicle and converts it into a voltage corresponding to the current speed. The higher the speed, the higher the output voltage. When the pin of the start protection controller receives the start signal, since the vehicle has no speed and there is no voltage on pin 6, pin 7 outputs a high potential of about 12 volts. After being amplified by operational amplifier 4, it passes through signal relay 5 to control field effect transistor 6 to control the slow-engagement start relay to work. The other way enters 555 timer 7 while charging the capacitor. After the capacitor is fully charged, 555 timer 7 outputs a voltage control signal relay 5 to cut off the gate input of field effect transistor 6. This is a delayed protection, and the time is controlled at about 25 seconds.

[0029] Among them, pin 1 of the frequency-voltage conversion chip 1 receives the speed signal of pin 4 of the generator and outputs it to pin 3 of the operational amplifier. Since pin 2 of the operational amplifier is connected to a potentiometer, there is a virtual voltage adjusted by the potentiometer at pin 2 of the operational amplifier. When the voltage received by the frequency-voltage conversion chip 1 exceeds the set value, the voltage output by pin 4 of the generator (entering pin 3 of the operational amplifier) ​​exceeds the virtual voltage of pin 2, the operational amplifier starts to work, and pin 1 outputs a high potential of about 13 volts to pin 6 of the operational amplifier. The voltage of pin 6 of the operational amplifier is higher than the voltage of pin 5 of the operational amplifier. Pin 7 of the operational amplifier outputs a low potential. At this time, the field effect tube stops working, and the high-speed protection can allow the starter to end its work in advance before the engine enters idle speed.

[0030] Forced starting is used in emergency situations to open the forced starting switch 8, and the forced starting output 24V positive pole is directly controlled by the ignition switch. One way is used to directly control the slow-engagement starting relay, and the other way is controlled by the voltage-dividing resistor to output the negative pole of the field effect tube to the slow-engagement starting relay to force the starter to work.

[0031] This embodiment changes the slow-engagement starting relay in the prior art from high-end control to two-end control, so that the starting negative pole output by the starting protection controller is independent of the generator, and therefore the failure rate of the starting protection controller is extremely low during use.

[0032] The three-digit number of the invention is controlled by an STM32 single-chip microcomputer, and a built-in counting program is added once the starter works and a power-off memory is added, so that the driver can be reminded to regularly maintain the starter.

[0033] As a further elaboration of the present invention, the output voltage of the 555 timer is connected to a signal relay, and the signal relay is used to connect a field effect transistor.

[0034] As a further elaboration of the present invention, pin No. 1 of the frequency-voltage conversion chip is electrically connected to the w-pole No. 4 lead of the generator, and the frequency-voltage conversion chip is used to convert the frequency signal output by the w-pole No. 4 lead of the generator into a voltage signal.

[0035] As a further elaboration of the present invention, the output end of the frequency-to-voltage conversion chip is used to connect to pin No. 3 of the operational amplifier, and pin No. 2 of the operational amplifier is used to connect to a potentiometer.

[0036] As a further elaboration of the present invention, a 12095 electromagnetic buzzer 17 is installed on the start protection controller. The present invention uses the structure of the electromagnetic buzzer to timely alarm when the starter works unexpectedly without the ignition switch. Because the noise is relatively large when the generator is running, the driver cannot hear and pay attention to the starter working unexpectedly after the generator is running. When the starter works unexpectedly, the buzzer will sound to remind the driver, so as to remind the driver.

[0037] Embodiment 2:

[0038] The startup protection controller is provided with a first LED indicator light 8, a second LED indicator light 9, a third LED indicator light 1, a fourth LED indicator light 11, a fifth LED indicator light 12, a sixth LED indicator light 13, a seventh LED indicator light 14 and an eighth LED indicator light 15. The first LED indicator light 8 is used to be connected to the ignition switch ON position, as shown in the circuit diagram. Figure 2 As shown at U1-1 in the circuit diagram, it is used to display whether the ignition switch is working properly. The second LED indicator 9 is used to be connected to the start gear of the ignition switch, as shown in R1-2 in the circuit diagram, and is used as an ignition switch start indication. It will not work when the forced switch is not turned on. The third LED indicator 10 is used to be connected to the start relay, as shown in the circuit diagram Figure 2 As shown in R9-1, it is used as a start-up indication of the start relay, the fourth LED indicator 11 is used to be connected to the output control end of the slow-engagement start relay K6 to serve as a start-up indication of the slow-engagement start relay, and the fifth LED indicator 12 is used to be connected to the output end of the magnetic switch, as shown in the circuit diagram Figure 2 As shown in K2-1, it is used for indicating the working of the magnetic switch. The sixth LED indicator light 13 is used to be connected in parallel with the generator speed signal and the pin 1 of the frequency-voltage conversion chip for speed signal indication. The seventh LED indicator light 14 is connected to the output end of the relay K6 for starting protection indication. The eighth LED indicator light 15 is turned on by the forced starting switch control switch for forced starting indication.

[0039] When the present embodiment is working, the first LED indicator 8 can be used to judge whether the ignition switch is working properly, the second LED indicator 9 can be used to judge whether the ignition switch is started normally, the third LED indicator 10 can be used to judge whether the start relay is working properly, the fourth LED indicator 11 can be used to judge whether the slow-engagement start relay is working properly, the fifth LED indicator 12 can be used to judge whether the magnetic switch is working properly, the sixth LED indicator 13 can be used to judge whether the speed signal of the generator is received, the seventh LED indicator 14 can be used to judge whether the start protection is turned on, and the eighth LED indicator 15 can be used to judge whether forced start occurs. When the LED indicator goes out, it means that the component is working abnormally, and when the LED indicator lights up, it means that the component is working normally. The staff can quickly judge where the component is faulty through the above eight groups of indicator lights, which solves the problem that the maintenance technician cannot find the fault quickly and smoothly in the prior art. The above fault indicator lights can help the maintenance technician quickly find the fault point, help to quickly find the cause of the fault, and improve the maintenance efficiency of the maintenance technician.

[0040] As a further elaboration of the present invention, the model of the frequency-to-voltage conversion chip is LM2907N-8.

[0041] As a further elaboration of the present invention, a timer 16 is installed on the start protection controller. The three-digit number in the timer is controlled by a built-in counting program controlled by the stm32 single-chip microcomputer. When the starter works once, a power-off memory is added to remind the driver to regularly maintain the starter.

[0042] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A fully automatic intelligent start protection integrated controller, comprising a starter and an original vehicle start relay, the starter is connected to a slow engagement start relay, the positive electrode of the original vehicle start relay output is connected to the positive electrode of the slow engagement start relay, characterized in that: The negative pole of the slow-engagement start relay is electrically connected to a start protection controller, which includes a frequency-voltage conversion chip, a potentiometer, a voltage-dividing resistor, a forced start switch, an operational amplifier, a signal relay, a field effect transistor, and a 555 timer. The voltage-dividing resistor is used to be electrically connected to the operational amplifier, and the voltage-dividing resistor is used to be connected to the pin of the start protection controller. The output end of the operational amplifier is used to connect the signal relay, and the signal relay is used to be connected to the field effect transistor. The pin of the start protection controller receives a start signal; One signal enters the operational amplifier through the voltage divider resistor, and enters the signal relay after being amplified by the operational amplifier. The signal relay controls the slow engagement start relay to work through the field effect transistor; Another signal enters the 555 timer, and the capacitor is charged simultaneously through the 555 timer. After being fully charged, the 555 timer outputs a voltage control signal, and relay 1 cuts off the gate input of the field effect tube to achieve delayed protection.

2. A fully automatic intelligent startup protection integrated controller according to claim 1, characterized in that: The output voltage of the 555 timer is connected to a signal relay, and the signal relay is used to connect a field effect tube.

3. The fully automatic intelligent startup protection integrated controller according to claim 1 is characterized in that: Pin No. 1 of the frequency-voltage conversion chip is electrically connected to the w-pole No. 4 lead of the generator, and the frequency-voltage conversion chip is used to convert the frequency signal output by the w-pole No. 4 lead of the generator into a voltage signal.

4. The fully automatic intelligent startup protection integrated controller according to claim 1 is characterized in that: The output end of the frequency-to-voltage conversion chip is used to connect to pin No. 3 of the operational amplifier, and pin No. 2 of the operational amplifier is used to connect to the potentiometer.

5. A fully automatic intelligent startup protection integrated controller according to claim 4, characterized in that: A 12095 electromagnetic buzzer is installed on the startup protection controller.

6. A fully automatic intelligent startup protection integrated controller according to claim 4, characterized in that: The startup protection controller is provided with a first LED indicator light, a second LED indicator light, a third LED indicator light, a fourth LED indicator light, a fifth LED indicator light, a sixth LED indicator light, a seventh LED indicator light and an eighth LED indicator light. The first LED indicator light is used to be connected to the ON position of the ignition switch to display whether the ignition switch is working normally. The second LED indicator light is used to be connected to the start position of the ignition switch to serve as an ignition switch startup indication. The third LED indicator light is used to be connected to the start relay to serve as a start relay startup indication. The fourth LED indicator light is used to be connected to the output control end of the slow-engagement start relay to serve as a slow-engagement start relay startup indication. The fifth LED indicator light is used to be connected to the output end of the magnetic switch to serve as a magnetic switch working indication. The sixth LED indicator light is used to be connected in parallel with the generator speed signal and the No. 1 pin of the frequency-voltage conversion chip to serve as a speed signal indication. The seventh LED indicator light is connected to the output end of the relay K6 to serve as a startup protection indication. The eighth LED indicator light is lit by the forced start switch control switch opening indicator light to serve as a forced start indication.

7. The fully automatic intelligent startup protection integrated controller according to claim 1 is characterized by: The model of the frequency-to-voltage conversion chip is LM2907N-8.

8. The fully automatic intelligent startup protection integrated controller according to claim 5 is characterized by: The start protection controller is equipped with a timer, wherein the three-digit number in the timer is controlled by a built-in counting program controlled by the stm32 single chip microcomputer. When the starter works once, a power-off memory is added to remind the driver to regularly maintain the starter.

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