Kart controller

Abstract

The utility model discloses a kart controller, which relates to the technical field of kart, and comprises a main power supply module for supplying power; the inversion adjusting module is used for performing three-phase inversion adjustment and adjusting the rotating speed of the motor module; the standby power supply module is used for standby power supply; the power supply detection module is used for carrying out power failure detection on the main power supply module and controlling the first power supply control module and the second power supply control module to carry out electric energy transmission work during power failure; and the speed detection control module is used for rotating speed detection and signal processing, and is used for setting a low-speed threshold value when the speed of the motor module is higher than the low-speed threshold value, and controlling the power-off work of the first power supply control module. According to the kart controller, the inversion adjusting module controls the rotating speed of the motor module, when the main power supply module is powered down, the standby power supply module is automatically controlled to supply power to the inversion adjusting module, the speed of the motor module is limited within a set low-speed threshold value, and high-speed running of a kart is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of karts, in particular to a kart controller. Background Art

[0002] As young people are increasingly accepting of go-karts, driving a go-kart in a parking lot has become a fashionable and interesting way of entertainment. The current go-kart controller uses MCU control to adjust the speed of the go-kart motor, and in order to avoid power failure during the operation of the go-kart, a backup power supply is used for a short period of time to facilitate the user to drive the go-kart to a safe parking area. However, after the go-kart backup power supply is switched, the speed of the go-kart cannot be automatically limited, resulting in the user continuing to use the go-kart at high speed for a long time, which is likely to reduce the service life of the go-kart in the long run and there are certain safety hazards, so it needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides a kart controller to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A kart controller, comprising: a main power supply module, an inverter regulation module, a motor module, a power supply detection module, a backup power supply module, a first power supply control module, a second power supply control module and a speed detection control module;

[0006] A main power module, used for providing main power;

[0007] An inverter regulation module, connected to the main power module and the first power supply control module, for receiving the electric energy output by the main power module and the electric energy transmitted by the first power supply control module and performing three-phase inverter regulation processing on the input electric energy;

[0008] A motor module, connected to the inverter regulation module, and used to adjust the speed of the permanent magnet synchronous motor according to the electric energy output by the inverter regulation module;

[0009] A backup power supply module, used for providing backup power;

[0010] A power supply detection module, connected to the main power supply module and the backup power supply module, for performing power failure detection on the power output by the main power supply module, for receiving the backup power and outputting a first control signal when the main power supply module fails to power on;

[0011] A first power supply control module, connected to the backup power supply module, the power supply detection module and the speed detection control module, for receiving a first control signal and transmitting the backup power to the inverter regulation module, and for receiving a second control signal output by the speed detection control module and stopping the transmission of power;

[0012] A second power supply control module, connected to the power supply detection module, the backup power supply module and the speed detection control module, for receiving the first control signal and transmitting the backup power to the speed detection control module;

[0013] The speed detection control module is connected to the motor module, and is used to detect the speed of the permanent magnet synchronous motor of the motor module and output a speed signal, to amplify and filter the speed signal, to set a low-speed threshold and output a second control signal when the processed speed signal is greater than the low-speed threshold.

[0014] As a further solution of the utility model: the main power supply module includes a power supply, a first capacitor, a second capacitor and a first diode; the inverter regulation module includes a first inverter; the motor module includes a permanent magnet synchronous motor;

[0015] Preferably, the first end of the power supply is connected to the anode of the first diode and is grounded through the first capacitor, the cathode of the first diode is connected to the first input end of the first inverter and is grounded through the second capacitor, the second end of the power supply and the second input end of the first inverter are both grounded, and the first output end, the second output end and the third output end of the first inverter are respectively connected to the first end, the second end and the third end of the permanent magnet synchronous motor.

[0016] As a further solution of the utility model: the power supply detection module includes a first resistor, a first optical coupler, a second resistor and a third resistor; the backup power supply module includes a backup power supply;

[0017] Preferably, the first end of the first optocoupler is connected to the first end of the power supply through the first resistor, the second end of the first optocoupler is grounded, the third end of the first optocoupler is connected to the backup power supply through the third resistor and the second resistor in sequence, and the fourth end of the first optocoupler is grounded.

[0018] As a further solution of the utility model: the first power supply control module includes a sixth resistor, a second power tube, a second switch tube, a third switch tube and a fourth resistor;

[0019] Preferably, the gate of the second power tube is connected to the collector of the third switch tube and is connected to the source of the second power tube and the backup power supply through a sixth resistor, the emitter of the third switch tube is connected to the emitter of the second switch tube is grounded, the base of the third switch tube is connected to the collector of the second switch tube and is connected to the third end of the first optocoupler through a fourth resistor, the drain of the second power tube is connected to the first input end of the first inverter, and the base of the second switch tube is connected to the speed detection control module.

[0020] As a further solution of the utility model: the second power supply control module includes a fifth resistor, a first power tube and a first switch tube;

[0021] Preferably, the gate of the first power tube is connected to the collector of the first switching tube and is connected to the source of the first power tube and the backup power supply through a fifth resistor, the emitter of the first switching tube is grounded, the drain of the first power tube is connected to the speed detection control module, and the base of the first switching tube is connected to the third end of the first optocoupler.

[0022] As a further solution of the utility model: the speed detection control module includes a speed sensor, a seventh resistor, a third capacitor, a first operational amplifier, an eighth resistor, a ninth resistor, a first potentiometer and a first comparator;

[0023] Preferably, the power supply end of the speed sensor, the power supply end of the first operational amplifier, one end of the ninth resistor and the power supply end of the first comparator are all connected to the drain of the first power tube, the output end of the speed sensor is connected to one end of the third capacitor and the in-phase end of the first operational amplifier through the seventh resistor, the inverting end of the first operational amplifier is connected to the output end of the first operational amplifier and the in-phase end of the first comparator, the inverting end of the first comparator is connected to the slider end of the first potentiometer, one end of the first potentiometer is grounded through the eighth resistor, the other end of the first potentiometer is connected to the other end of the ninth resistor, the output end of the first comparator is connected to the base of the second switching tube, and the other end of the third capacitor and the grounding end of the speed sensor are both grounded.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows: the kart controller of the utility model uses the inverter regulation module to complete the speed control of the motor module, and the power supply detection module detects the power supply status of the main power module, and when the main power module loses power, the first power supply control module automatically controls the backup power supply module to provide power to the inverter regulation module, and at the same time, the second power supply control module controls the speed detection module to detect the speed of the motor module and limit the speed of the motor module to a set low-speed threshold, so that when the kart fails, the kart can continue to be driven to a safe parking area to avoid high-speed operation of the kart and reduce driving risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The present invention provides a schematic block diagram of a kart controller.

[0027] Figure 2 A circuit diagram of a kart controller provided in an example of the utility model.

[0028] Figure 3 This is a connection circuit diagram of a speed detection control module provided by an example of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In one embodiment, see Figure 1 , a kart controller, comprising: a main power supply module 1, an inverter regulation module 2, a motor module 3, a power supply detection module 4, a backup power supply module 5, a first power supply control module 6, a second power supply control module 7 and a speed detection control module 8;

[0031] Specifically, the main power module 1 is used to provide main power;

[0032] The inverter regulation module 2 is connected to the main power module 1 and the first power supply control module 6, and is used to receive the electric energy output by the main power module 1 and the electric energy transmitted by the first power supply control module 6 and perform three-phase inverter regulation processing on the input electric energy;

[0033] The motor module 3 is connected to the inverter regulation module 2 and is used to adjust the speed of the permanent magnet synchronous motor according to the electric energy output by the inverter regulation module 2;

[0034] A backup power supply module 5, used for providing backup power;

[0035] A power supply detection module 4, connected to the main power supply module 1 and the backup power supply module 5, for performing power failure detection on the power output by the main power supply module 1, for receiving the backup power and outputting a first control signal when the main power supply module 1 fails to power on;

[0036] The first power supply control module 6 is connected to the backup power supply module 5, the power supply detection module 4 and the speed detection control module 8, and is used to receive the first control signal and transmit the backup power to the inverter regulation module 2, and is used to receive the second control signal output by the speed detection control module 8 and stop the transmission of power;

[0037] A second power supply control module 7, connected to the power supply detection module 4, the backup power module 5 and the speed detection control module 8, for receiving the first control signal and transmitting the backup power to the speed detection control module 8;

[0038] The speed detection control module 8 is connected to the motor module 3, and is used to detect the rotational speed of the permanent magnet synchronous motor of the motor module 3 and output a speed signal, to amplify and filter the speed signal, to set a low-speed threshold and output a second control signal when the processed speed signal is greater than the low-speed threshold.

[0039] In a specific embodiment, the main power supply module 1 may adopt a main power supply circuit to provide the main DC power; the inverter regulation module 2 may adopt an inverter regulation circuit composed of a three-phase inverter, which is controlled by a related single-chip microcomputer (not shown) to adjust the power input to the motor module 3 and change the speed of the motor module 3; the motor module 3 may adopt a motor circuit composed of a permanent magnet synchronous motor to convert the power into mechanical energy; the power supply detection module 4 may adopt a power supply detection circuit composed of a photoelectric coupler, a resistor, etc. to perform power failure detection on the main power supply module 1; the backup power supply module 5 may adopt a backup power supply circuit composed of a backup power supply to provide backup DC power; The first power supply control module 6 can adopt a first power supply control circuit composed of a triode, a power tube, etc., which is controlled by the power supply detection module 4 and the speed detection control module 8 to control the transmission of electric energy; the above-mentioned second power supply control module 7 can adopt a second power supply control circuit composed of a power tube, a triode, etc., which is controlled by the power supply detection module 4 and controls the transmission of electric energy; the above-mentioned speed detection control module 8 can adopt a speed detection circuit and a speed limit control circuit, the speed detection circuit detects the rotation speed of the motor module 3 and amplifies and filters the detected signal, the speed limit control circuit sets a low speed threshold and controls the power-off work of the first power supply control module 6 when the processed signal is greater than the low speed threshold.

[0040] In another embodiment, see Figure 1 , Figure 2 and Figure 3The main power supply module 1 includes a power supply, a first capacitor C1, a second capacitor C2 and a first diode D1; the inverter regulation module 2 includes a first inverter T1; the motor module 3 includes a permanent magnet synchronous motor;

[0041] Specifically, the first end of the power supply is connected to the anode of the first diode D1 and is grounded through the first capacitor C1, the cathode of the first diode D1 is connected to the first input end of the first inverter T1 and is grounded through the second capacitor C2, the second end of the power supply and the second input end of the first inverter T1 are both grounded, and the first output end, the second output end and the third output end of the first inverter T1 are respectively connected to the first end, the second end and the third end of the permanent magnet synchronous motor.

[0042] In a specific embodiment, the power supply may be a lithium battery to provide DC power; the first inverter T1 may be a three-phase inverter consisting of six groups of IGBTs, controlled by a single-chip microcomputer to achieve speed regulation of the permanent magnet synchronous motor, which will not be elaborated here.

[0043] Further, the power supply detection module 4 includes a first resistor R1, a first optical coupler J1, a second resistor R2 and a third resistor R3; the backup power supply module 5 includes a backup power supply;

[0044] Specifically, the first end of the first optocoupler J1 is connected to the first end of the power supply through the first resistor R1, the second end of the first optocoupler J1 is grounded, the third end of the first optocoupler J1 is connected to the backup power supply through the third resistor R3 and the second resistor R2 in sequence, and the fourth end of the first optocoupler J1 is grounded.

[0045] In a specific embodiment, the first optical coupler J1 can be a PC817 photoelectric coupler; the backup power supply can be a lithium battery, and the power capacity of the backup power supply is smaller than the power capacity of the photoelectric power supply, which will not be elaborated here.

[0046] Further, the first power supply control module 6 includes a sixth resistor R6, a second power tube Q2, a second switch tube VT2, a third switch tube VT3 and a fourth resistor R4;

[0047] Specifically, the gate of the second power tube Q2 is connected to the collector of the third switch tube VT3 and is connected to the source of the second power tube Q2 and the backup power supply through the sixth resistor R6, the emitter of the third switch tube VT3 and the emitter of the second switch tube VT2 are both grounded, the base of the third switch tube VT3 is connected to the collector of the second switch tube VT2 and is connected to the third end of the first optocoupler J1 through the fourth resistor R4, the drain of the second power tube Q2 is connected to the first input end of the first inverter T1, and the base of the second switch tube VT2 is connected to the speed detection control module 8.

[0048] In a specific embodiment, the second switch tube VT2 and the third switch tube VT3 can both be NPN transistors; the second power tube Q2 can be a P-channel field effect tube.

[0049] Furthermore, the second power supply control module 7 includes a fifth resistor R5, a first power tube Q1 and a first switch tube VT1;

[0050] Specifically, the gate of the first power tube Q1 is connected to the collector of the first switch tube VT1 and is connected to the source of the first power tube Q1 and the backup power supply through the fifth resistor R5, the emitter of the first switch tube VT1 is grounded, the drain of the first power tube Q1 is connected to the speed detection control module 8, and the base of the first switch tube VT1 is connected to the third end of the first optocoupler J1.

[0051] In a specific embodiment, the first power tube Q1 may be a P-channel field effect tube; and the first switch tube VT1 may be an NPN transistor.

[0052] Further, the speed detection control module 8 includes a speed sensor, a seventh resistor R7, a third capacitor C3, a first operational amplifier OP1, an eighth resistor R8, a ninth resistor R9, a first potentiometer RP1 and a first comparator A1;

[0053] Specifically, the power supply end of the speed sensor, the power supply end of the first operational amplifier OP1, one end of the ninth resistor R9 and the power supply end of the first comparator A1 are all connected to the drain of the first power tube Q1, the output end of the speed sensor is connected to one end of the third capacitor C3 and the in-phase end of the first operational amplifier OP1 through the seventh resistor R7, the inverting end of the first operational amplifier OP1 is connected to the output end of the first operational amplifier OP1 and the in-phase end of the first comparator A1, the inverting end of the first comparator A1 is connected to the slider end of the first potentiometer RP1, one end of the first potentiometer RP1 is grounded through the eighth resistor R8, the other end of the first potentiometer RP1 is connected to the other end of the ninth resistor R9, the output end of the first comparator A1 is connected to the base of the second switch tube VT2, and the other end of the third capacitor C3 and the grounding end of the speed sensor are both grounded.

[0054] In a specific embodiment, the speed sensor can use a SC12-20K Hall chip, and cooperate with the first operational amplifier OP1, the seventh resistor R7 and the third capacitor C3 to form a speed detection circuit, wherein the first operational amplifier OP1 can use an LM358 operational amplifier, and cooperate with the seventh resistor R7 and the third capacitor C3 to amplify and filter the input signal; the first comparator A1 can use an LM397 comparator, and cooperate with the ninth resistor R9, the first potentiometer RP1 and the eighth resistor R8 to form a speed limit control circuit, wherein the ninth resistor R9, the first potentiometer RP1 and the eighth resistor R8 provide a low speed threshold.

[0055] In a kart controller of the present embodiment, the main power is provided by the power supply, and is transmitted to the first inverter T1 by the first diode D1. The three-phase inversion regulation is performed by the first inverter T1 to provide AC power for the permanent magnet synchronous motor. The speed of the permanent magnet synchronous motor can be adjusted by adjusting the power of the AC power. When the power supply fails, the first optical coupler J1 will be cut off, so that the backup power triggers the first switch tube VT1 to turn on through the second resistor R2 and the third resistor R3, and then controls the third switch tube VT3 to turn on through the fourth resistor R4. At this time, the first power tube Q1 and the second power tube Q2 are turned on, and the speed sensor is turned on. The sensor, the first operational amplifier OP1, the first comparator A1 and the first inverter T1 are powered, the speed sensor detects the speed of the permanent magnet synchronous motor, the first operational amplifier OP1 cooperates with the seventh resistor R7 and the third capacitor C3 to amplify and filter the detected signal, when the processed signal is greater than the low speed threshold set by the ninth resistor R9, the eighth resistor R8 and the first potentiometer RP1, the first comparator A1 will output a high level, control the second switch tube VT2 to turn on, so that the third switch tube VT3 is turned off, the second power tube Q2 is turned off, and the first inverter T1 stops working, thereby realizing the speed limit control of the kart.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A kart controller, characterized in that: The kart controller includes: a main power supply module, an inverter adjustment module, a motor module, a power supply detection module, a backup power supply module, a first power supply control module, a second power supply control module and a speed detection control module; The main power supply module is used to provide main power; The inverter regulation module is connected to the main power module and the first power supply control module, and is used to receive the electric energy output by the main power module and the electric energy transmitted by the first power supply control module and perform three-phase inverter regulation processing on the input electric energy; The motor module is connected to the inverter regulation module and is used to adjust the speed of the permanent magnet synchronous motor according to the electric energy output by the inverter regulation module; The backup power supply module is used to provide backup power; The power supply detection module is connected to the main power supply module and the backup power supply module, and is used to perform power failure detection on the power output by the main power supply module, and is used to receive the backup power and output a first control signal when the main power supply module is powered off; The first power supply control module is connected to the backup power supply module, the power supply detection module and the speed detection control module, and is used to receive the first control signal and transmit the backup power to the inverter regulation module, and is used to receive the second control signal output by the speed detection control module and stop the transmission of power; The second power supply control module is connected to the power supply detection module, the backup power supply module and the speed detection control module, and is used to receive the first control signal and transmit the backup power to the speed detection control module; The speed detection control module is connected to the motor module, and is used to detect the rotational speed of the permanent magnet synchronous motor of the motor module and output a speed signal, to amplify and filter the speed signal, to set a low-speed threshold and output a second control signal when the processed speed signal is greater than the low-speed threshold.

2. A kart controller according to claim 1, characterized in that: The main power supply module includes a power supply, a first capacitor, a second capacitor and a first diode; the inverter regulation module includes a first inverter; the motor module includes a permanent magnet synchronous motor; The first end of the power supply is connected to the anode of the first diode and is grounded through the first capacitor, the cathode of the first diode is connected to the first input end of the first inverter and is grounded through the second capacitor, the second end of the power supply and the second input end of the first inverter are both grounded, and the first output end, the second output end and the third output end of the first inverter are respectively connected to the first end, the second end and the third end of the permanent magnet synchronous motor.

3. A kart controller according to claim 2, characterized in that: The power supply detection module includes a first resistor, a first optical coupler, a second resistor and a third resistor; the backup power supply module includes a backup power supply; The first end of the first optocoupler is connected to the first end of the power supply through the first resistor, the second end of the first optocoupler is grounded, the third end of the first optocoupler is connected to the backup power supply through the third resistor and the second resistor in sequence, and the fourth end of the first optocoupler is grounded.

4. A kart controller according to claim 3, characterized in that: The first power supply control module includes a sixth resistor, a second power tube, a second switch tube, a third switch tube and a fourth resistor; The gate of the second power tube is connected to the collector of the third switch tube and is connected to the source of the second power tube and the backup power supply through the sixth resistor, the emitter of the third switch tube is grounded, the base of the third switch tube is connected to the collector of the second switch tube and is connected to the third end of the first optocoupler through the fourth resistor, the drain of the second power tube is connected to the first input end of the first inverter, and the base of the second switch tube is connected to the speed detection control module.

5. A kart controller according to claim 4, characterized in that: The second power supply control module includes a fifth resistor, a first power tube and a first switch tube; The gate of the first power tube is connected to the collector of the first switch tube and is connected to the source of the first power tube and the backup power supply through the fifth resistor. The emitter of the first switch tube is grounded. The drain of the first power tube is connected to the speed detection control module. The base of the first switch tube is connected to the third end of the first optocoupler.

6. A kart controller according to claim 5, characterized in that: The speed detection control module includes a speed sensor, a seventh resistor, a third capacitor, a first operational amplifier, an eighth resistor, a ninth resistor, a first potentiometer and a first comparator; The power supply end of the speed sensor, the power supply end of the first operational amplifier, one end of the ninth resistor and the power supply end of the first comparator are all connected to the drain of the first power tube, the output end of the speed sensor is connected to one end of the third capacitor and the in-phase end of the first operational amplifier through the seventh resistor, the inverting end of the first operational amplifier is connected to the output end of the first operational amplifier and the in-phase end of the first comparator, the inverting end of the first comparator is connected to the slider end of the first potentiometer, one end of the first potentiometer is grounded through the eighth resistor, the other end of the first potentiometer is connected to the other end of the ninth resistor, the output end of the first comparator is connected to the base of the second switch tube, and the other end of the third capacitor and the grounding end of the speed sensor are both grounded.

Images