Medical waste crushing power transmission control circuit

Abstract

The utility model discloses a medical waste crushing power transmission control circuit, which comprises a current detection circuit for detecting the current of a driving motor, and the current detection circuit is electrically connected with a microprocessor; the voltage detection circuit is used for detecting the voltage of the driving motor and is electrically connected with the microprocessor; the temperature detection circuit is used for detecting the temperature of the driving motor and is electrically connected with the microprocessor; the rotating speed detection circuit is used for detecting the rotating speed of the driving motor and is electrically connected with the microprocessor; one end of the motor control circuit is electrically connected with the microprocessor, and the other end of the motor control circuit is electrically connected with a driving motor of the medical waste crushing equipment. According to the scheme, the strength of an object to be crushed is indirectly reflected through the current, the voltage, the temperature and the rotating speed of the driving motor, and according to the reflected strength of the object to be crushed, the microprocessor controls the rotating speed and the torque of the driving motor through the motor control circuit so as to adapt to the strength of the object to be crushed, and the crushing effect and the crushing efficiency are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical waste treatment technical field, concretely relates to a medical waste crushing power transmission control circuit. BACKGROUND

[0002] In the process of medical waste treatment, the waste is crushed by using a crushing device. However, the driving motor of the current medical waste crushing device cannot change the torque and the rotating speed according to the strength of the medical waste when driving the power transmission. When the medical waste with high crushing strength is crushed, the torque is insufficient, which affects the crushing effect. When the medical waste with low crushing strength is crushed, the rotating speed is insufficient, which affects the crushing efficiency. SUMMARY

[0003] The utility model provides a medical waste crushing power transmission control circuit, through the current, voltage, temperature and rotating speed of driving motor are measured, the strength of the material to be crushed is reflected indirectly, according to the strength of the material to be crushed, microprocessor controls the rotating speed and torque of driving motor through motor control circuit, to adapt to the strength of the material to be crushed, guarantee crushing effect and crushing efficiency.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0005] The utility model provides a medical waste crushing power transmission control circuit, which comprises:

[0006] A current detection circuit is arranged to detect the current of the driving motor of the medical waste crushing device, and the current detection circuit is electrically connected to the microprocessor.

[0007] A voltage detection circuit is arranged to detect the voltage of the driving motor of the medical waste crushing device, and the voltage detection circuit is electrically connected to the microprocessor.

[0008] A temperature detection circuit is arranged to detect the temperature of the driving motor of the medical waste crushing device, and the temperature detection circuit is electrically connected to the microprocessor.

[0009] A rotating speed detection circuit is arranged to detect the rotating speed of the driving motor of the medical waste crushing device, and the rotating speed detection circuit is electrically connected to the microprocessor.

[0010] A motor control circuit is arranged, one end of the motor control circuit is electrically connected to the microprocessor, and the other end of the motor control circuit is electrically connected to the driving motor of the medical waste crushing device.

[0011] A motor power supply is arranged, and the motor power supply is electrically connected to the driving motor.

[0012] Optionally, the current detection circuit comprises:

[0013] A current sensor is connected in series in a power supply circuit of the driving motor, an IP+ pin of the current sensor is electrically connected to a positive pole of the motor power supply, an IP- pin of the current sensor is electrically connected to a positive pole pin of the driving motor, a VCC pin of the current sensor is electrically connected to a VCC pin of the microprocessor, a GND pin of the current sensor is grounded, a fourth capacitor is electrically connected between the GND pin and a FILTER pin of the current sensor, a fifth capacitor is electrically connected between the GND pin and the VCC pin of the current sensor, and a VIOUT pin of the current sensor is electrically connected to an ADC0 pin of the microprocessor.

[0014] Optionally, the voltage detection circuit comprises:

[0015] A second resistor, one end of the second resistor is electrically connected to a positive pole of the motor power supply;

[0016] A third resistor, one end of the third resistor is electrically connected to a negative pole of the motor power supply, and the other end of the third resistor is electrically connected to the second resistor;

[0017] A voltage sensor, a +VS pin of the voltage sensor is electrically connected to a VCC pin of the microprocessor, the +VS pin of the voltage sensor is grounded through a sixth capacitor, a -VS pin and a REF pin of the voltage sensor are grounded, a +IN pin of the voltage sensor is electrically connected to a connection point of the second resistor and the third resistor, a -IN pin of the voltage sensor is electrically connected to a negative pole of the motor power supply, an OUT pin of the voltage sensor is electrically connected to an ADC1 pin of the microprocessor, and a +Rg pin and a -Rg pin of the voltage sensor are electrically connected through a fourth resistor.

[0018] Optionally, the temperature detection circuit comprises:

[0019] A temperature sensor, the temperature sensor is arranged on the driving motor to detect a temperature of the driving motor, a VCC pin of the temperature sensor is electrically connected to a VCC pin of the microprocessor, a GND pin of the temperature sensor is grounded, a fifth resistor is electrically connected between the VCC pin and a DQ pin of the temperature sensor, and a DQ pin of the temperature sensor is electrically connected to a PD2 pin of the microprocessor.

[0020] Optionally, the rotation speed detection circuit comprises:

[0021] A rotation speed sensor is arranged on the output shaft of the driving motor to measure the rotation speed of the output shaft of the driving motor, a VCC pin of the rotation speed sensor is electrically connected with the VCC pin of the microprocessor, a GND pin of the rotation speed sensor is grounded, and an OUT pin of the rotation speed sensor is electrically connected with the PD3 pin of the microprocessor.

[0022] Optionally, the motor control circuit comprises:

[0023] A motor driver, a VSS pin of the motor driver is electrically connected with the VCC pin of the microprocessor, a VS pin of the motor driver is electrically connected with the positive pole of the motor power supply, an ENA pin of the motor driver is electrically connected with the PD5 pin of the microprocessor, an IN1 pin of the motor driver is electrically connected with the PD6 pin of the microprocessor, an IN2 pin of the motor driver is electrically connected with the PD7 pin of the microprocessor, an OUT1 pin of the motor driver is electrically connected with the positive pole of the driving motor, and an OUT2 pin of the motor driver is electrically connected with the negative pole of the driving motor.

[0024] Optionally, the medical waste crushing power transmission control circuit further comprises:

[0025] A power supply control circuit, one end of the power supply control circuit is electrically connected with the microprocessor, and the other end of the power supply control circuit is electrically connected with the power supply loop of the motor power supply and the driving motor to control the communication and disconnection of the power supply loop of the motor power supply and the driving motor.

[0026] Optionally, the power supply control circuit comprises:

[0027] A first MOS tube, a gate of the first MOS tube is electrically connected with the PD4 pin of the microprocessor through a sixth resistor, and a drain of the first MOS tube is grounded.

[0028] A seventh resistor, the gate of the first MOS tube is grounded through the seventh resistor.

[0029] A seventh capacitor, the seventh capacitor is electrically connected between the gate and the drain of the first MOS tube.

[0030] A first relay, a first pin of a coil of the first relay is electrically connected with the VCC pin of the microprocessor, a second pin of the coil of the first relay is electrically connected with the source of the first MOS tube, a common end pin of the first relay is electrically connected with the negative pole of the motor power supply, and a normally closed contact pin of the first relay is electrically connected with the negative pole of the driving motor.

[0031] A first diode, a positive electrode of the first diode is electrically connected with the source electrode of the first MOS tube, and a negative electrode of the first diode is electrically connected with a first pin of the coil of the first relay.

[0032] Optionally, the power supply control circuit further comprises:

[0033] An alarm, the alarm is electrically connected with the normally open contact pin of the first relay.

[0034] The above scheme of the utility model has at least the following beneficial effects:

[0035] The above scheme of the utility model measures the current, voltage, temperature and rotating speed of the driving motor, indirectly reflects the strength of the to-be-crushed object, and according to the reflected strength of the to-be-crushed object, the microprocessor controls the rotating speed and torque of the driving motor through the motor control circuit, so as to adapt to the strength of the to-be-crushed object, and ensure the crushing effect and crushing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A module diagram of the medical waste crushing power transmission control circuit is provided in the embodiment of the utility model;

[0037] Figure 2 A circuit diagram of the medical waste crushing power transmission control circuit is provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0038] Exemplary embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0039] As Figures 1-2 shown, the utility model provides a kind of medical waste crushing power transmission control circuit, comprising:

[0040] Current detection circuit 10 for detecting the current of the driving motor M1 of medical waste crushing equipment, and current detection circuit 10 is electrically connected with microprocessor U1;

[0041] Voltage detection circuit 20 for detecting the voltage of the driving motor M1 of medical waste crushing equipment, and voltage detection circuit 20 is electrically connected with microprocessor U1;

[0042] Temperature detection circuit 30 for detecting the temperature of the driving motor M1 of medical waste crushing equipment, and temperature detection circuit 30 is electrically connected with microprocessor U1;

[0043] A rotation speed detection circuit 40 is configured to detect the rotation speed of the driving motor M1 of the medical waste crushing device, and the rotation speed detection circuit 40 is electrically connected to the microprocessor U1;

[0044] A motor control circuit 50 is electrically connected to one end of the microprocessor U1, and the other end of the motor control circuit 50 is electrically connected to the driving motor M1 of the medical waste crushing device;

[0045] A motor power supply V1 is electrically connected to the driving motor M1.

[0046] In this embodiment, when the medical waste crushing device is crushing medical waste, the hardness of the medical waste is different, which will cause the current, voltage, temperature and rotation speed of the driving motor of the medical waste crushing device to change. The current change of the driving motor M1 is detected by the current detection circuit 10, the voltage change of the driving motor M1 is detected by the voltage detection circuit 20, the temperature change of the driving motor M1 is detected by the temperature detection circuit 30, and the rotation speed change of the driving motor M1 is detected by the rotation speed detection circuit 40. The microprocessor U1 controls the rotation speed and torque of the driving motor M1 through the motor control circuit 50 according to the current change, voltage change, temperature change and rotation speed change of the driving motor M1, so as to meet the crushing requirement of the current medical waste, ensure the crushing effect and crushing efficiency. Specifically, when the hardness of the medical waste is large, the load of the driving motor M1 increases, which will cause the current of the driving motor M1 to increase, the voltage to increase, the temperature to increase and the rotation speed to decrease. When the microprocessor U1 receives the above change information, the driving motor M1 is controlled through the motor control circuit 50 to reduce the rotation speed of the driving motor M1 and increase the torque of the driving motor M1, so as to crush the medical waste with large hardness in a state of large torque and low rotation speed, ensure the crushing effect and avoid damage to the medical waste crushing device. When the hardness of the medical waste is small, the load of the driving motor M1 decreases, which will cause the current of the driving motor M1 to decrease, the voltage to decrease, the temperature to decrease and the rotation speed to increase. When the microprocessor U1 receives the above change information, the driving motor M1 is controlled through the motor control circuit 50 to increase the rotation speed of the driving motor M1 and reduce the torque of the driving motor M1, so as to crush the medical waste with small hardness in a state of small torque and high rotation speed, ensure the crushing effect and improve the crushing efficiency. When the medical waste crushing device is stuck, the current and temperature of the driving motor M1 will increase sharply. At this time, the microprocessor U1 controls the driving motor M1 through the motor control circuit 50 to reverse the driving motor M1, so as to release the sticking of the driving motor M1 and avoid damage to the driving motor M1.

[0047] As shown in Figure 2 In an optional embodiment of the utility model, the current detection circuit 10 includes:

[0048] The current sensor U2 is connected in series in the power supply loop of the motor power supply V1 and the driving motor M1, the IP+ pin of the current sensor U2 is electrically connected with the positive pole of the motor power supply V1, the IP- pin of the current sensor U2 is electrically connected with the positive pole pin of the driving motor M1, the VCC pin of the current sensor U2 is electrically connected with the VCC pin of the microprocessor U1, the GND pin of the current sensor U2 is grounded, the fourth capacitor C4 is electrically connected between the GND pin and the FILTER pin of the current sensor U2, the fifth capacitor C5 is electrically connected between the GND pin and the VCC pin of the current sensor U2, and the VIOUT pin of the current sensor U2 is electrically connected with the ADC0 pin of the microprocessor U1.

[0049] In the embodiment, the IP+ pin of the current sensor U2 is electrically connected with the positive pole of the motor power supply V1, the IP- pin of the current sensor U2 is electrically connected with the positive pole pin of the driving motor M1, the current sensor U2 is connected in series in the power supply loop of the motor power supply V1 and the driving motor M1, and the current sensor U2 is used for measuring the current change of the driving motor M1, the VIOUT pin of the current sensor U2 is electrically connected with the ADC0 pin of the microprocessor U1, so that the current change signal of the driving motor M1 measured by the current sensor U2 can be transmitted to the microprocessor U1, and the microprocessor U1 can control the driving motor M1 through the motor control circuit 50 according to the current change.

[0050] As shown in Figure 2 The voltage detection circuit 20 includes;

[0051] The second resistor R2 has one end electrically connected with the positive pole of the motor power supply V1;

[0052] The third resistor R3 has one end electrically connected with the negative pole of the motor power supply V1 and the other end electrically connected with the second resistor R2;

[0053] The voltage sensor U3 has the +VS pin electrically connected with the VCC pin of the microprocessor U1, the +VS pin of the voltage sensor U3 is grounded through the sixth capacitor C6, the -VS pin and the REF pin of the voltage sensor U3 are grounded, the +IN pin of the voltage sensor U3 is electrically connected with the connection point of the second resistor R2 and the third resistor R3, the -IN pin of the voltage sensor U3 is electrically connected with the negative pole of the motor power supply V1, the OUT pin of the voltage sensor U3 is electrically connected with the ADC1 pin of the microprocessor U1, and the fourth resistor R4 is electrically connected between the +Rg pin and the -Rg pin of the voltage sensor U3.

[0054] In the embodiment, one end of the second resistor R2 is electrically connected with the positive pole of the motor power supply V1, one end of the third resistor R3 is electrically connected with the negative pole of the motor power supply V1, the other end of the third resistor R3 is electrically connected with the second resistor R2, and voltage division is performed by using the second resistor R2 and the third resistor R3; the +IN pin of the voltage sensor U3 is electrically connected with the connection point of the second resistor R2 and the third resistor R3, the -IN pin of the voltage sensor U3 is electrically connected with the negative pole of the motor power supply V1, the voltage change of the third resistor R3 is measured by the voltage sensor U3, so that the voltage change of the driving motor M1 is indirectly measured; and the OUT pin of the voltage sensor U3 is electrically connected with the ADC1 pin of the microprocessor U1, so that the voltage change signal measured by the voltage sensor U3 can be transmitted to the microprocessor U1, and the microprocessor U1 can control the driving motor M1 according to the voltage change through the motor control circuit 50.

[0055] As shown in Figure 2 In an optional embodiment of the utility model, the temperature detection circuit 30 includes:

[0056] The temperature sensor U4 is arranged on the driving motor M1 to detect the temperature of the driving motor M1, the VCC pin of the temperature sensor U4 is electrically connected with the VCC pin of the microprocessor U1, the GND pin of the temperature sensor U4 is grounded, the fifth resistor R5 is electrically connected between the VCC pin and the DQ pin of the temperature sensor U4, and the DQ pin of the temperature sensor U4 is electrically connected with the PD2 pin of the microprocessor U1.

[0057] In the embodiment, the temperature change of the driving motor M1 is measured by the temperature sensor U4, the DQ pin of the temperature sensor U4 is electrically connected with the PD2 pin of the microprocessor U1, the temperature change signal measured by the temperature sensor U4 can be transmitted to the microprocessor U1, and the microprocessor U1 can control the driving motor M1 according to the temperature change signal through the motor control circuit 50.

[0058] As shown in Figure 2 In an optional embodiment of the utility model, the rotational speed detection circuit 40 includes:

[0059] The rotational speed sensor U5 is arranged on the output shaft of the driving motor M1 to measure the rotational speed of the output shaft of the driving motor M1, the VCC pin of the rotational speed sensor U5 is electrically connected with the VCC pin of the microprocessor U1, the GND pin of the rotational speed sensor U5 is grounded, and the OUT pin of the rotational speed sensor U5 is electrically connected with the PD3 pin of the microprocessor U1.

[0060] In the embodiment, the speed change of the driving motor M1 is measured by the speed sensor U5, the OUT pin of the speed sensor U5 is electrically connected with the PD3 pin of the microprocessor U1, the speed change signal measured by the speed sensor U5 is transmitted to the microprocessor U1, and the microprocessor U1 controls the driving motor M1 through the motor control circuit 50 according to the speed change signal.

[0061] As shown in Figure 2 the optional embodiment of the utility model, the motor control circuit 50 comprises:

[0062] The motor driver U6, the VSS pin of the motor driver U6 is electrically connected with the VCC pin of the microprocessor U1, the VS pin of the motor driver U6 is electrically connected with the positive pole of the motor power supply V1, the ENA pin of the motor driver U6 is electrically connected with the PD5 pin of the microprocessor U1, the IN1 pin of the motor driver U6 is electrically connected with the PD6 pin of the microprocessor U1, the IN2 pin of the motor driver U6 is electrically connected with the PD7 pin of the microprocessor U1, the OUT1 pin of the motor driver U6 is electrically connected with the positive pole of the driving motor M1, and the OUT2 pin of the motor driver U6 is electrically connected with the negative pole of the driving motor M1.

[0063] In the embodiment, the ENA pin of the motor driver U6 is electrically connected with the PD5 pin of the microprocessor U1, the IN1 pin of the motor driver U6 is electrically connected with the PD6 pin of the microprocessor U1, and the IN2 pin of the motor driver U6 is electrically connected with the PD7 pin of the microprocessor U1, so that the motor driver U6 receives the control signal of the microprocessor U1, the OUT1 pin of the motor driver U6 is electrically connected with the positive pole of the driving motor M1, and the OUT2 pin of the motor driver U6 is electrically connected with the negative pole of the driving motor M1, so that the motor driver U6 controls the speed, torque and forward and reverse rotation of the driving motor M1 according to the control signal sent by the microprocessor U1.

[0064] As shown in Figure 1 the optional embodiment of the utility model, the medical waste crushing power transmission control circuit further comprises:

[0065] The power supply control circuit 60, one end of the power supply control circuit 60 is electrically connected with the microprocessor U1, and the other end of the power supply control circuit 60 is electrically connected with the motor power supply V1 and the power supply loop of the driving motor M1, so as to control the communication and disconnection of the motor power supply V1 and the power supply loop of the driving motor M1.

[0066] In the embodiment, when the current, voltage, temperature and speed of the driving motor M1 exceed the safety range, the microprocessor U1 disconnects the motor power supply V1 and the power supply loop of the driving motor M1 through the power supply control circuit 60, so that the driving motor M1 stops working, and damage of the driving motor M1 is avoided.

[0067] As Figure 2 shown, in an optional embodiment of the utility model, the power supply control circuit 60 includes:

[0068] The first MOS tube Q1, the gate of the first MOS tube Q1 is electrically connected with the PD4 pin of the microprocessor U1 through the sixth resistance R6, and the drain of the first MOS tube Q1 is grounded.

[0069] The seventh resistance R7, the gate of the first MOS tube Q1 is grounded through the seventh resistance R7.

[0070] The seventh capacitor C7, the seventh capacitor C7 is electrically connected between the gate and the drain of the first MOS tube Q1.

[0071] The first relay K2, the first pin of the coil of the first relay K2 is electrically connected with the VCC pin of the microprocessor U1, the second pin of the coil of the first relay K2 is electrically connected with the source of the first MOS tube Q1, the common end pin of the first relay K2 is electrically connected with the negative pole of the motor power supply V1, and the normally closed contact pin of the first relay K2 is electrically connected with the negative pole of the driving motor M1.

[0072] The first diode D1, the anode of the first diode D1 is electrically connected with the source of the first MOS tube Q1, and the cathode of the first diode D1 is electrically connected with the first pin of the coil of the first relay K2.

[0073] In this embodiment, when the driving motor M1 works normally, the current, voltage, temperature and rotating speed of the driving motor M1 are all within the safety range, the microprocessor U1 controls the first MOS tube Q1 to be in the cut-off state, the coil of the first relay K2 is not electrified, the common end pin and the normally closed contact pin of the first relay K2 are in communication, the power supply loop of the motor power supply V1 and the driving motor M1 is in the communication state, and the driving motor M1 normally runs.

[0074] When the current, voltage, temperature and rotating speed of the driving motor M1 exceed the safety range, the microprocessor U1 controls the first MOS tube Q1 to be in the conducting state, the coil of the first relay K2 is electrified, the common end pin and the normally open contact pin of the first relay K2 are in communication, the power supply loop of the motor power supply V1 and the driving motor M1 is disconnected, the driving motor M1 stops working, and the driving motor M1 is prevented from being damaged.

[0075] The sixth resistance R6 is used for current limiting protection, and the seventh resistance R7 and the seventh capacitor C7 are used for filtering, so that the safety of the first MOS tube Q1 is guaranteed.

[0076] When the coil of the first relay K2 is deenergized, a reverse electromotive force is generated, the first diode D1 provides a discharge circuit for the reverse electromotive force, and the reverse electromotive force is prevented from damaging the first MOS tube Q1.

[0077] In the optional embodiment of the utility model, the power supply control circuit 60 further comprises:

[0078] The alarm is electrically connected with the normally open contact pin of the first relay K2.

[0079] In this embodiment, when the current, voltage, temperature and rotating speed of the driving motor M1 exceed the safety range, the microprocessor U1 controls the first MOS tube Q1 to be in the conducting state, the coil of the first relay K2 is electrified, the common end pin of the first relay K2 is communicated with the normally open contact pin, the motor power supply V1 is disconnected with the power supply circuit of the driving motor M1, and the driving motor M1 stops working; at the same time, the alarm and the motor power supply V1 form a loop, the alarm alarms, and reminds the staff to detect in time.

[0080] Medical waste crushing power transmission control process:

[0081] When the driving motor M1 works normally, the current, voltage, temperature and rotating speed of the driving motor M1 are all within the safety range, the microprocessor U1 controls the first MOS tube Q1 to be in the cut-off state, the coil of the first relay K2 is not electrified, the common end pin of the first relay K2 is communicated with the normally closed contact pin, the motor power supply V1 is in the communication state with the power supply circuit of the driving motor M1, and the driving motor M1 normally runs;

[0082] The current change of the driving motor M1 is measured by the current sensor U2, the voltage change of the third resistor R3 is measured by the voltage sensor U3, the temperature change of the driving motor M1 is measured by the temperature sensor U4, and the rotation speed change of the driving motor M1 is measured by the rotation speed sensor U5; the microprocessor U1 controls the rotation speed and the torque of the driving motor M1 through the motor control circuit 50 according to the current change, the voltage change, the temperature change and the rotation speed change of the driving motor M1, so as to meet the crushing requirement of the current medical waste, ensure the crushing effect and the crushing efficiency; specifically, when the hardness of the medical waste is large, the load of the driving motor M1 is increased, which causes the current of the driving motor M1 to be large, the voltage of the driving motor M1 to be large, the temperature of the driving motor M1 to be high and the rotation speed of the driving motor M1 to be low; after the microprocessor U1 receives the above change information, the driving motor M1 is controlled through the motor control circuit 50, so as to reduce the rotation speed of the driving motor M1 and increase the torque of the driving motor M1; the medical waste with large hardness is crushed under the condition of large torque and low rotation speed, the crushing effect is ensured, and the medical waste crushing equipment is prevented from being damaged; when the hardness of the medical waste is small, the load of the driving motor M1 is reduced, which causes the current of the driving motor M1 to be small, the voltage of the driving motor M1 to be small, the temperature of the driving motor M1 to be low and the rotation speed of the driving motor M1 to be increased; after the microprocessor U1 receives the above change information, the driving motor M1 is controlled through the motor control circuit 50, so as to increase the rotation speed of the driving motor M1 and reduce the torque of the driving motor M1; the medical waste with small hardness is crushed under the condition of small torque and high rotation speed, the crushing effect is ensured, and the crushing efficiency is improved;

[0083] When the medical waste crushing equipment is stuck, the current and the temperature of the driving motor M1 are sharply increased; at this time, the microprocessor U1 controls the driving motor M1 through the motor control circuit 50, so that the driving motor M1 is reversed, the sticking of the driving motor M1 is solved, and the driving motor M1 is prevented from being damaged;

[0084] When the current, the voltage, the temperature and the rotation speed of the driving motor M1 exceed the safety range, the microprocessor U1 controls the first MOS tube Q1 to be in the conducting state, the coil of the first relay K2 is electrified, the common end pin of the first relay K2 is in communication with the normally open contact pin, the motor power supply V1 is disconnected from the power supply loop of the driving motor M1, the driving motor M1 stops working, and the driving motor M1 is prevented from being damaged; meanwhile, the alarm and the motor power supply V1 form a loop, the alarm alarms, and the staff is reminded to detect in time;

[0085] The medical waste crushing power transmission control circuit provided by the above embodiment of the utility model indirectly reflects the strength of the to-be-crushed object by measuring the current, the voltage, the temperature and the rotation speed of the driving motor M1, the microprocessor U1 controls the rotation speed and the torque of the driving motor M1 through the motor control circuit 50 according to the reflected strength of the to-be-crushed object, so as to adapt to the strength of the to-be-crushed object, ensure the crushing effect and the crushing efficiency, and ensure the safety of the driving motor M1.

[0086] The above is the preferred embodiment of the present application, it should be noted that, for those skilled in the ordinary technical personnel in this field, without departing from the principles described in the present application, can also be made several improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.

Claims

1. A power transmission control circuit for medical waste crushing, characterized in that: The application relates to a medical waste crushing device, which comprises the following parts: a current detection circuit (10) for detecting the current of a driving motor (M1) of the medical waste crushing device, the current detection circuit (10) being electrically connected with a microprocessor (U1); a voltage detection circuit (20) for detecting the voltage of the driving motor (M1) of the medical waste crushing device, the voltage detection circuit (20) being electrically connected with the microprocessor (U1); a temperature detection circuit (30) for detecting the temperature of the driving motor (M1) of the medical waste crushing device, the temperature detection circuit (30) being electrically connected with the microprocessor (U1); a rotating speed detection circuit (40) for detecting the rotating speed of the driving motor (M1) of the medical waste crushing device, the rotating speed detection circuit (40) being electrically connected with the microprocessor (U1); a motor control circuit (50), one end of the motor control circuit (50) being electrically connected with the microprocessor (U1), and the other end of the motor control circuit (50) being electrically connected with the driving motor (M1) of the medical waste crushing device; a motor power supply (V1), the motor power supply (V1) being electrically connected with the driving motor (M1).

2. The medical waste shredding power transmission control circuit of claim 1, wherein, The current detection circuit (10) comprises: a current sensor (U2), which is connected in series in a power supply loop of the motor power supply (V1) and the driving motor (M1), the IP+ pin of the current sensor (U2) is electrically connected with the positive pole of the motor power supply (V1), the IP- pin of the current sensor (U2) is electrically connected with the positive pole pin of the driving motor (M1), the VCC pin of the current sensor (U2) is electrically connected with the VCC pin of the microprocessor (U1), the GND pin of the current sensor (U2) is grounded, the fourth capacitor (C4) is electrically connected between the GND pin and the FILTER pin of the current sensor (U2), the fifth capacitor (C5) is electrically connected between the GND pin and the VCC pin of the current sensor (U2), and the VIOUT pin of the current sensor (U2) is electrically connected with the ADC0 pin of the microprocessor (U1).

3. The medical waste shredding power transmission control circuit of claim 1, wherein, The voltage detection circuit (20) comprises: a second resistor (R2), one end of the second resistor (R2) being electrically connected with the positive pole of the motor power supply (V1); a third resistor (R3), one end of the third resistor (R3) being electrically connected with the negative pole of the motor power supply (V1), and the other end of the third resistor (R3) being electrically connected with the second resistor (R2); A voltage sensor (U3), the +VS pin of the voltage sensor (U3) is electrically connected with the VCC pin of the microprocessor (U1), the +VS pin of the voltage sensor (U3) is grounded through the sixth capacitor (C6), the -VS pin and the REF pin of the voltage sensor (U3) are grounded, the +IN pin of the voltage sensor (U3) is electrically connected with the connection point of the second resistor (R2) and the third resistor (R3), the -IN pin of the voltage sensor (U3) is electrically connected with the negative electrode of the motor power supply (V1), the OUT pin of the voltage sensor (U3) is electrically connected with the ADC1 pin of the microprocessor (U1), and the fourth resistor (R4) is electrically connected between the +Rg pin and the -Rg pin of the voltage sensor (U3).

4. The medical waste shredding power transmission control circuit of claim 1, wherein, The temperature detection circuit (30) comprises: A temperature sensor (U4) is arranged on the driving motor (M1) to detect the temperature of the driving motor (M1), the VCC pin of the temperature sensor (U4) is electrically connected with the VCC pin of the microprocessor (U1), the GND pin of the temperature sensor (U4) is grounded, and the fifth resistor (R5) is electrically connected between the VCC pin and the DQ pin of the temperature sensor (U4), and the DQ pin of the temperature sensor (U4) is electrically connected with the PD2 pin of the microprocessor (U1).

5. The medical waste shredding power transmission control circuit of claim 1, wherein, The rotation speed detection circuit (40) comprises: A rotation speed sensor (U5) is arranged on the output shaft of the driving motor (M1) to measure the rotation speed of the output shaft of the driving motor (M1), the VCC pin of the rotation speed sensor (U5) is electrically connected with the VCC pin of the microprocessor (U1), the GND pin of the rotation speed sensor (U5) is grounded, and the OUT pin of the rotation speed sensor (U5) is electrically connected with the PD3 pin of the microprocessor (U1).

6. The medical waste shredding power transfer control circuit of claim 1, wherein, The motor control circuit (50) comprises: A motor driver (U6), the VSS pin of the motor driver (U6) is electrically connected with the VCC pin of the microprocessor (U1), the VS pin of the motor driver (U6) is electrically connected with the positive electrode of the motor power supply (V1), the ENA pin of the motor driver (U6) is electrically connected with the PD5 pin of the microprocessor (U1), the IN1 pin of the motor driver (U6) is electrically connected with the PD6 pin of the microprocessor (U1), the IN2 pin of the motor driver (U6) is electrically connected with the PD7 pin of the microprocessor (U1), the OUT1 pin of the motor driver (U6) is electrically connected with the positive electrode of the driving motor (M1), and the OUT2 pin of the motor driver (U6) is electrically connected with the negative electrode of the driving motor (M1).

7. The medical waste shredding power transfer control circuit of claim 1, wherein, Further comprising: A power supply control circuit (60) is electrically connected to the microprocessor (U1) at one end and electrically connected to the motor power supply (V1) and the power supply loop of the driving motor (M1) at the other end to control the communication and disconnection of the motor power supply (V1) and the power supply loop of the driving motor (M1).

8. The medical waste shredding power transfer control circuit of claim 7, wherein, The power supply control circuit (60) comprises: A first MOS tube (Q1), the gate of the first MOS tube (Q1) is electrically connected to the PD4 pin of the microprocessor (U1) through the sixth resistor (R6), and the drain of the first MOS tube (Q1) is grounded. The seventh resistor (R7) is connected to the gate of the first MOS tube (Q1). The seventh capacitor (C7) is electrically connected between the gate and the drain of the first MOS tube (Q1). A first relay (K2), the first pin of the coil of the first relay (K2) is electrically connected to the VCC pin of the microprocessor (U1), the second pin of the coil of the first relay (K2) is electrically connected to the source of the first MOS tube (Q1), the common end pin of the first relay (K2) is electrically connected to the negative electrode of the motor power supply (V1), and the normally open contact pin of the first relay (K2) is electrically connected to the negative electrode of the driving motor (M1). A first diode (D1), the anode of the first diode (D1) is electrically connected to the source of the first MOS tube (Q1), and the cathode of the first diode (D1) is electrically connected to the first pin of the coil of the first relay (K2).

9. The medical waste shredding power transfer control circuit of claim 8, wherein, Further comprising: An alarm, the alarm is electrically connected to the normally open contact pin of the first relay (K2).

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