JP3211962U - Motor component and sensor integrated circuit - Google Patents

Abstract

A sensor integrated circuit and a motor component are provided. The present disclosure provides a sensor integrated circuit including a rectifier (60), a power supply module (40), an output control circuit (30), and a detection circuit (20). The rectifier (60) is configured to convert an external power source to a first DC power source. The power module (40) includes a voltage regulator configured to generate a second DC power supply that is different from the first DC power supply. The detection circuit (20) is supplied with power from the second DC power source, and is configured to detect an input signal and generate a corresponding control signal. The output control circuit (30) controls the sensor integrated circuit in response to at least the control signal, and the first state in which the current flows out from the output port (Pout) and the first state in which the current flows in from the output port (Pout). It is configured to operate in at least one of the two states. [Selection] Figure 1

Description

  The present disclosure relates to the field of electronic circuit technology, and more specifically to sensor integrated circuits.

  Sensor integrated circuits are widely used in modern industrial and electronic products, which can detect information and convert the detected information into electrical signals according to some rules.

  In the prior art, the sensor integrated circuit can usually output only the detection result, and an external circuit is required to process the detection result. The present disclosure is intended to extend the functionality of sensor integrated circuits in the prior art to reduce circuit cost and increase circuit reliability.

In accordance with aspects of the present disclosure, a sensor integrated circuit is provided that includes a housing, a semiconductor substrate disposed within the housing, an output port extending out of the housing, and an input configured to connect to an external power source. A port and an electronic circuit disposed on the semiconductor substrate, the electronic circuit including a rectifier, a power supply module, an output control circuit, and a detection circuit;
The rectifier is configured to convert an external power source to a first DC power source,
The power supply module is configured to generate a second DC power supply different from the first DC power supply,
The detection circuit is configured to detect a signal supplied from the second DC power source and input to the sensor integrated circuit and generate a corresponding control signal.
The output control circuit controls the sensor integrated circuit in response to at least the control signal, and a first state in which a current flows from the output port to the outside of the sensor integrated circuit and a current flows from the outside of the sensor integrated circuit to the output port. It is configured to operate at least one of the second states.

  Preferably, the detection circuit may include a magnetic sensor configured to detect an external magnetic field and output a magnetic field detection signal adapted to the external magnetic field, and the magnetic field detection signal may function as the control signal. it can.

  Preferably, the voltage supplied to the output control circuit can be different from the voltage of the second DC power supply.

  Preferably, the output control circuit can be powered by the first DC power supply, and the average value of the voltage supplied to the output control circuit is higher than the average value of the output voltage of the second DC power supply. can do.

Preferably, the power supply module may further include a voltage stabilizer and a band gap reference voltage source,
The voltage stabilizer can be configured to stabilize the voltage of the first DC power source to a lower voltage that functions as a third DC power source,
The bandgap reference voltage source can be powered by a third DC power source and can be configured to generate a reference voltage lower than the voltage of the third DC power source;
The voltage regulator can be powered by a first DC power source and can be configured to generate a second DC power source based on a reference voltage.

  Preferably, the voltage of the second DC power supply can be lower than the voltage of the third DC power supply.

  Preferably, the output control circuit can include a first switch and a second switch, and the first switch and the output port can be connected in the first current path, and the second switch And the output port can be connected in a second current path having a direction opposite to the direction of the first current path, the first switch and the second switch being selected under the control of the magnetic field detection signal Can be turned on automatically.

  Preferably, the output control circuit includes a first current path through which current flows from the output port to the outside of the sensor integrated circuit, a second current path through which current flows from the output port to the inside of the sensor integrated circuit, and a first current And a switch connected to one of the path and the second current path, the switch being controlled based on the magnetic field detection information output by the detection circuit, the first current path and the second current path Can be selectively turned on.

  Preferably, the other of the first current path and the second current path may not include a switch.

Preferably, the magnetic sensor is
A magnetic sensing element configured to detect the polarity of an external magnetic field and output an electrical signal;
A signal processing unit configured to amplify and de-scramble the electrical signal to generate an analog signal;
An analog-to-digital conversion unit configured to convert an analog electrical signal to a logic high level signal or a logic low level signal;
Can include
The power supply module includes a reference signal generator configured to generate another reference voltage based on the reference voltage output from the bandgap reference voltage source and to supply the other reference voltage to the analog-to-digital conversion unit. Further can be included.

  Preferably, the magnetic sensing element can be powered by a second DC power source.

  Preferably, the external power source can be an AC power source, and the output control circuit controls the sensor integrated circuit based on information on the AC power source and the magnetic field detection signal, and at least current is output from the output port to the sensor integrated circuit. It can be configured to switch between a first state that flows out of the circuit and a second state in which current flows from the outside of the sensor integrated circuit to the output port.

  Preferably, the external power supply can be an AC power supply, the output control circuit controls the sensor integrated circuit, the magnetic field detection signal is the external magnetic field is in the first magnetic polarity, and the AC power supply is the first. In the case of indicating that the electric polarity is in the first state and the second state, the magnetic field detection signal indicates that the external magnetic field is opposite to the first magnetic polarity. When it is in the magnetic polarity and the AC power supply indicates the second electric polarity opposite to the first electric polarity, the operation is performed in the other of the first state and the second state. Can be configured.

  Preferably, the external power source can be an AC power source, and the output control circuit can be configured such that the AC power source is in the positive half cycle and the external magnetic field is in the first magnetic polarity, or the AC power source is in the negative half cycle. When the external magnetic field is in a second magnetic polarity opposite to the first magnetic polarity, the load current is allowed to flow through the output port and the AC power source is in a negative half cycle; When the external magnetic field is in the first magnetic polarity, or when the AC power source is in the positive half cycle and the external magnetic field is in the second magnetic polarity, the load current is prevented from flowing through the output port. Can be configured as follows.

  According to another aspect of the present disclosure, a motor component is provided that includes a motor and a motor drive circuit, the motor drive circuit including the sensor integrated circuit described above.

  Preferably, the motor driving circuit may further include a bidirectional switch connected in series with the motor between both ends of the external AC power source. The output port of the sensor integrated circuit can be connected to the control terminal of the bidirectional switch.

  Preferably, the motor can include a stator and a permanent magnet rotor, and the stator can include a stator core and a single-phase winding wound around the stator core.

  The present disclosure is provided to extend the functionality of existing sensor integrated circuits, thereby reducing the cost of the circuit and increasing the reliability of the circuit.

  In order that technical solutions according to the embodiments of the present disclosure or according to the prior art will become more apparent, the accompanying drawings required to be used for describing the embodiments or the prior art will be briefly described as follows. It will be apparent that the accompanying drawings in the following description merely illustrate some embodiments of the present disclosure. Those skilled in the art can obtain other accompanying drawings without any creative work by these accompanying drawings.

1 is a schematic structural diagram of a sensor integrated circuit according to an embodiment of the present disclosure. 1 is a schematic structural diagram of a power supply module of a sensor integrated circuit according to an embodiment of the present disclosure. 3 is a circuit diagram of an output control circuit of a sensor integrated circuit according to an embodiment of the present disclosure. FIG. 3 is a circuit diagram of an output control circuit of a sensor integrated circuit according to an embodiment of the present disclosure. FIG. 3 is a circuit diagram of an output control circuit of a sensor integrated circuit according to an embodiment of the present disclosure. FIG. 2 is a schematic structural diagram of an output control circuit in a magnetic sensor integrated circuit according to an embodiment of the present disclosure; FIG. 1 is a schematic structural diagram of a detection circuit of a sensor integrated circuit according to an embodiment of the present disclosure. FIG. 4 is a circuit diagram of a rectifier of a sensor integrated circuit according to an embodiment of the present disclosure. 2 is a circuit structure diagram of a motor component according to an embodiment of the present disclosure. FIG. FIG. 3 is a structural diagram of a motor in a motor component according to an embodiment of the present disclosure.

  In order to make the above objects, features, and advantages of the present disclosure clearer and easier to understand, embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

  Referring to FIG. 1, a sensor integrated circuit provided by an embodiment of the present disclosure includes a housing, a semiconductor substrate disposed in the housing, an input port Pin and an output port Pout extending out from the housing, and the semiconductor substrate. And an electronic circuit disposed in the. The input port Pin can be connected to an external power source. The electronic circuit includes a rectifier 60, a power supply module 40, an output control circuit 30, and a detection circuit 20.

  The rectifier 60 is configured to convert an external power source into a first DC power supply.

  The power supply module 40 is configured to generate a second DC power supply different from the first DC power supply. Preferably, the power supply module 40 includes a voltage regulator. The voltage regulator is powered by a first DC power supply and can generate a second DC power supply.

  The detection circuit 20 is supplied with power from the second DC power supply, detects a predetermined signal input to the sensor integrated circuit, and generates a control signal corresponding to the detected signal in response to the detected signal. Configured as follows.

  The output control circuit 30 controls the sensor integrated circuit in response to at least a control signal, and a first state in which current flows from the output port Pout to the outside of the sensor integrated circuit and current flows from the outside of the sensor integrated circuit to the output port. It is configured to operate at least one of the second states flowing through Pout.

  In the present disclosure, the input port Pin can be directly connected to both terminals of the external power supply, or can be connected with an external load connected in series to the input port between both ends of the external power supply. It is not limited in the specification and can be determined according to actual conditions.

  The sensor integrated circuit provided in this embodiment expands the function of the existing sensor integrated circuit, thereby reducing the cost of the entire circuit and increasing the reliability of the circuit.

  Preferably, the detection circuit 20 includes a magnetic sensor. The magnetic sensor is configured to detect an external magnetic field and output a magnetic field detection signal that matches the external magnetic field. The magnetic field detection signal functions as a control signal.

  If the detection circuit 20 includes a magnetic sensor, the sensor integrated circuit according to embodiments of the present disclosure extends the functionality of the existing magnetic sensor, thereby reducing the overall circuit cost and increasing the circuit reliability.

  Preferably, the voltage supplied to the output control circuit 30 is different from the voltage of the second DC power supply.

  Preferably, the output control circuit 30 is powered by a first DC power source as shown in FIG. The detection circuit 20 is supplied with power by a second DC power supply different from the first DC power supply. It should be noted that in embodiments of the present disclosure, the first DC power supply can supply a voltage with variable or constant amplitude. The second DC power supply preferably supplies a voltage with a constant amplitude in order to ensure that a stable power supply signal is supplied to the detection circuit 20 for stable operation.

  Preferably, the average voltage of the first DC power source output by the rectifier 60 is higher than the average voltage of the second DC power source output by the power supply module 40. By supplying power to the detection circuit 20 at a lower voltage, the power consumption of the sensor integrated circuit can be reduced. By supplying power to the output control circuit 30 at a higher voltage, a large load current can be provided from the output port out, and sufficient driving capability of the sensor integrated circuit is guaranteed.

  Obviously, the output control circuit 30 is not necessarily limited to being powered by the first DC power supply, and this can be determined according to actual conditions. FIG. 1 is provided for illustrative purposes only, and any solution for powering the output control circuit 30 falls within the protection scope of the present disclosure.

  In a preferred embodiment as shown in FIG. 2, the power supply module 40 includes a voltage stabilizer 42 and a bandgap reference voltage source 43 in addition to the voltage regulator 41.

  The voltage stabilizer 42 is configured to stabilize the voltage of the first DC power supply to a lower voltage that functions as a third DC power supply.

  The band gap reference voltage source 43 is configured to be supplied with power from a third DC power source and to generate a reference voltage lower than the voltage of the third DC power source.

  The voltage regulator 41 is supplied with power from a first DC power source and is configured to generate a second DC power source based on a reference voltage.

  In a particular example, the voltage of the first DC power source output by the rectifier 60 can be tens of volts. The voltage stabilizer 42 is connected to the first DC power source output from the rectifier 60, stabilizes the voltage of the first DC power source, and functions as a third DC power source. ). The third DC power source output by the voltage stabilizer 42 supplies power to the band gap reference voltage source 43, which generates a reference voltage (eg, 1.25 V) lower than the voltage of the third DC power source. . The voltage regulator 41 generates a second DC power supply (for example, 2.5 V) based on the reference voltage. The voltage of the second DC power supply can be higher than the reference voltage and lower than the voltage of the third DC power supply. The voltage regulator 41 is powered by a higher first direct current power supply, thereby improving the response speed of the integrated circuit as a whole.

  In the preferred embodiment, the output control circuit 30 includes a first switch 31 and a second switch 32. The first switch 31 and the output port Pout are connected in the first current path. The second switch 32 and the output port Pout are connected in a second current path having a direction opposite to the direction of the first current path. The first switch 31 and the second switch 32 are selectively turned on under the control of the magnetic field detection signal. Preferably, the first switch 31 can be embodied as a triode and the second switch 32 can be embodied as a diode or triode, but these are not limited herein and are Can be determined according to

  In a specific embodiment as shown in FIG. 3, the first switch 31 and the second switch 32 are embodied as a pair of complementary semiconductor switches. The first switch 31 is turned on at a lower level, and the second switch 32 is turned on at a higher level. The first switch 31 and the output port Pout are connected in the first current path. The second switch 32 and the output port Pout are connected in the second current path. The control terminals of both the first switch 31 and the second switch 32 are connected to the magnetic sensor. The current input terminal of the first switch 31 is connected to a higher voltage side (for example, DC power supply), and the current output terminal of the first switch 31 is connected to the current input terminal of the second switch 32. The current output terminal of the second switch 32 is connected to a lower voltage side (for example, ground). When the magnetic field detection information output by the magnetic sensor is at a low level, the first switch 31 is turned on and the second switch 32 is turned off. As a result, the load current is increased from the higher voltage side to the first voltage. Flows through the switch 31 and the output port Pout of the sensor integrated circuit. When the magnetic field detection information output by the magnetic sensor is at a high level, the second switch 32 is turned on and the first switch 31 is turned off. As a result, the load current is output from the outside of the sensor integrated circuit. It flows to the port Pout and flows through the second switch 32. In the embodiment as shown in FIG. 3, the first switch 31 is embodied as a positive channel metal oxide semiconductor field effect transistor (P-type MOSFET) and the second switch 32 is a negative channel metal oxide semiconductor field. It is embodied as an effect transistor (N-type MOSFET). The first switch and the second switch in another embodiment are other types of semiconductor switches, such as junction field effect transistors (JFETs) or metal-semiconductor field effect transistors (MESFETs), or other field effect transistors. It can be understood that it can be embodied.

  In another implementation as shown in FIG. 4, the first switch 31 is embodied as a switch transistor that is turned on at a high level, and the second switch 32 is embodied as a unidirectional conductive diode. The control terminal of the first switch 31 and the cathode of the second switch 32 are connected to the detection circuit 20. The current input terminal of the first switch 31 is connected to the output terminal of the rectifier 60. The current output terminal of the first switch 31 and the anode of the second switch 32 are both connected to the output port Pout. The first switch 31 and the output port Pout are connected in the first current path. The output port Pout, the second switch 32, and the magnetic sensor are connected in the second current path. When the magnetic field detection information output by the magnetic sensor is at a high level, the first switch 31 is turned on and the second switch 32 is turned off, so that the load current is transferred from the rectifier 60 to the first switch. 31 and the output port Pout to flow outside the sensor integrated circuit. When the magnetic field detection information output by the magnetic sensor is at a low level, the second switch 32 is turned on and the first switch 31 is turned off. As a result, the load current is output from the outside of the sensor integrated circuit. It flows to the port Pout and flows through the second switch 32. It will be understood that the first switch 31 and the second switch 32 in other embodiments may have other structures, which are not limited herein and can be determined according to actual conditions. can do.

  In another embodiment of the present disclosure, the output control circuit 30 includes a first current path through which current flows from the output port to the outside of the sensor integrated circuit, and a second current through which current flows from the output port to the inside of the sensor integrated circuit. And a switch connected to one of the first current path and the second current path. The switch is controlled based on magnetic field detection information output by the detection circuit, and selectively turns on the first current path and the second current path. Preferably, the other of the first current path and the second current path does not include a switch.

  In a specific implementation as shown in FIG. 5, the unidirectional switch 33 and the output port Pout are connected in the first current path. The current input terminal of the unidirectional switch 33 can be connected to the output terminal of the magnetic sensor. The output terminal of the magnetic sensor can also be connected to the output port Pout through a resistor R1 in a second current path having a direction opposite to the direction of the first current path. When the magnetic field detection signal is at a higher level, the unidirectional switch 33 is turned on, so that the load current flows through the unidirectional switch 33 and the output port Pout to the outside of the sensor integrated circuit. When the magnetic field detection signal is at a lower level, the unidirectional switch 33 is turned off, so that the load current flows from the outside of the sensor integrated circuit to the output port Pout and flows through the resistor R1 and the detection circuit 20. .

  Alternatively, the resistor R1 in the second current path can be replaced by another unidirectional switch connected in anti-parallel to the unidirectional switch 33. In this way, the load current flowing out from the output port and the load current flowing into the output port are further balanced.

  In another specific implementation as shown in FIG. 5A, the output control circuit 30 is connected in series with diodes D1 and D2 connected in series in the reverse direction between the output terminal of the detection circuit 20 and the output port Pout. A resistor R1 connected in parallel to the diodes D1 and D2 and a resistor R2 connected between the power supply Vcc and the common terminal of the diodes D1 and D2 are included. The cathode of the diode D1 is connected to the output terminal of the detection circuit 20. The diode D1 is under the control of magnetic field detection information. When the magnetic field detection information is at a high level, the diode D1 is turned off, so that the load current flows from the output port Pout to the outside of the sensor integrated circuit through the resistor R2 and the diode D2. When the magnetic field detection information is at a low level, the load current flows from the outside of the sensor integrated circuit to the output port Pout and flows through the resistor R1 and the detection circuit 20.

  In the embodiment of the present disclosure as shown in FIG. 6, the detection circuit 20 includes a magnetic sensor. The magnetic sensor is configured to detect the polarity of the external magnetic field and output an electrical signal, and to generate an analog electrical signal by amplifying the electrical signal and descrambling the electrical signal. A signal processing unit 22 and an analog-to-digital conversion unit 23 configured to convert the amplified and descrambled analog electrical signal into a magnetic field detection signal. For applications that only require that the polarity of the external magnetic field be identified, the magnetic field detection signal can be a switched digital signal. Preferably, as shown in FIG. 2, the power supply module 40 generates another reference voltage based on the reference voltage output from the bandgap reference voltage source, and supplies this other reference voltage to the analog-digital conversion unit. And a reference signal generator 44 configured as described above.

  In a preferred embodiment, the external power source is an AC power source, and the output control circuit 30 controls the sensor integrated circuit based on the information on the AC power source and the magnetic field detection signal, so that at least the current is sensor integrated from the output port Pout. It can be configured to switch between a first state that flows to the outside of the circuit and a second state in which current flows from the outside of the sensor integrated circuit to the output port Pout. In the embodiment of the present disclosure, switching of the operation state of the sensor integrated circuit between the first state and the second state is not limited to the case where the state is switched to the other state immediately after the one state. It should be noted that the case of switching to the other state after an interval time elapses after the state of. In preferred applications, there is no output from the output port of the sensor integrated circuit during the interval time for switching between the first state and the second state.

  In a specific implementation, the sensor integrated circuit operates in a first state in which current flows from the output port Pout to the outside of the sensor integrated circuit, and in a second state in which current flows from the outside of the sensor integrated circuit to the output port Pout. Can do. The output control circuit 30 controls the sensor integrated circuit, and if the magnetic field detection signal indicates that the external magnetic field is in the first magnetic polarity and the AC power supply is in the first electric polarity, the first The magnetic field detection signal is in the second magnetic polarity opposite to the first magnetic polarity, and the AC power source is in the first electric polarity. When the second electrical polarity is opposite to that of the first state, the second state is configured to operate in the other state of the first state and the second state.

  More specifically, the output control circuit 30 has an AC power supply in the positive half cycle and the magnetic field detection signal indicates that the external magnetic field is in the first magnetic polarity or the AC power supply is in the negative half cycle. And the magnetic field detection signal indicates that the external magnetic field is in a second magnetic polarity opposite to the first magnetic polarity, the load current can be configured to flow through the output port Pout, and AC When the power source is in the positive half cycle and the magnetic field detection signal indicates that the external magnetic field is in the second magnetic polarity, or the AC power source is in the negative half cycle and the magnetic field detection signal is In the case of indicating a magnetic polarity of 1, the load current can be configured not to flow through the output port Pout. When the AC power source is in the positive half cycle and the external magnetic field is in the first magnetic polarity, or the AC power source is in the negative half cycle and the external magnetic field is in the second magnetic polarity, the output port is The situation of the load current flowing through is that the load current flows through the output port over the entire period of either of the above two cases, and the output port over the partial period of any of the above two cases. Note that it includes both conditions that flow through.

  In certain embodiments of the present disclosure, based on any one of the above embodiments, the rectifier includes a full wave rectifier bridge and a voltage stabilization unit connected in series with the output of the full wave rectifier bridge. The full wave rectifier bridge is configured to convert AC power output by the AC power source into DC power. The voltage stabilization unit is configured to stabilize the DC power output by the full wave rectifier bridge so as to fall within a predetermined range.

  FIG. 7 shows a specific circuit of the rectifier. The voltage stabilization unit includes a zener diode 621 connected between the two output terminals of the full wave rectifier bridge. The full wave rectifier bridge includes a first diode 611 and a second diode 612 connected in series, and a third diode 613 and a fourth diode 614 connected in series. A common terminal of the first diode 611 and the second diode 612 is electrically connected to the first input port VAC +. A common terminal of the third diode 613 and the fourth diode 614 is electrically connected to the second input port VAC−.

  The input terminal of the first diode 611 is electrically connected to the input terminal of the third diode 613 to form the ground output terminal of the full wave rectifier bridge. The output terminal of the second diode 612 is electrically connected to the output terminal of the fourth diode 614 to form the output terminal VDD of the full wave rectifier bridge. The Zener diode 621 is connected between the common terminal of the second diode 612 and the fourth diode 614 and the common terminal of the first diode 611 and the third diode 613. Note that in embodiments of the present disclosure, the power supply terminal of the output control circuit can be electrically connected to the voltage output terminal of the full wave rectifier bridge.

  Magnetic sensor integrated circuits according to embodiments of the present disclosure are described below in connection with specific applications.

  Referring to FIG. 8, an embodiment of the present disclosure further provides a motor component. The motor components include a motor 200 powered by an AC power supply 100, a bidirectional switch 300 connected in series to the motor 200, and a magnetic sensor integrated circuit 400 according to any of the above embodiments. The output port of the magnetic sensor integrated circuit 400 is electrically connected to the control terminal of the bidirectional switch 300. Preferably, the bidirectional switch 300 can be a triode AC semiconductor switch (TRIAC). It can be appreciated that the bidirectional switch can be implemented as other types of suitable switches. For example, the bi-directional switch is arranged to control two silicon controlled rectifiers according to a predetermined rule based on two anti-parallel connected silicon controlled rectifiers and the output signal of the output port of the magnetic sensor integrated circuit. , Each control circuit can be included.

  Preferably, the motor component further includes a voltage drop circuit 500 configured to drop the voltage of the AC power supply 100 to provide the voltage dropped to the magnetic sensor integrated circuit 400. The magnetic sensor integrated circuit 400 is mounted near the rotor of the motor 200 to detect changes in the rotor magnetic field.

  In certain embodiments of the present disclosure, the motor is a synchronous motor. It can be appreciated that the drive circuit according to the present disclosure is applicable not only to synchronous motors, but also to other types of permanent magnet motors such as DC brushless motors. Referring to FIG. 9, the synchronous motor includes a stator and a rotor 11 that can rotate with respect to the stator. The stator includes a stator core 12 and a stator winding 16 wound on the stator core 12. The stator core 12 can be made of a soft magnetic material such as pure iron, cast iron, cast steel, electric steel, or silicon steel. The rotor 11 includes a permanent magnet. The rotor 11 operates at a constant rotational speed of 60 f / p revolutions / minute during the steady state phase when the stator winding 16 is connected in series with the AC power supply, where f is the frequency of the AC power supply. P represents the number of pole pairs of the rotor. In the embodiment, the stator core 12 includes two poles 14 opposite to each other. Each of the poles 14 includes a pole arc 15. The outer surface of the rotor 11 faces the magnetic pole arc 15, and a substantially uniform air gap 13 is formed between the outer surface of the rotor 11 and the magnetic pole arc 15. The “substantially uniform air cap” in the present disclosure is such that a uniform air gap is formed in most of the space between the stator and the rotor, and a non-uniform air gap is formed between the stator and the rotor. It means to be formed in a small part between. Preferably, a concave starting groove 17 can be arranged in the pole pole 15 of the stator pole, and the part of the pole arc 15 other than the starting groove 17 can be concentric with the rotor. With the above-described configuration, a non-uniform magnetic field can be formed, and when the rotor is stationary, the rotor pole axis S1 has an angle inclined with respect to the stator pole center axis S2. Guarantees that the rotor has a starting torque under the action of the integrated circuit each time the motor is energized. Specifically, “rotor pole axis S1” refers to the boundary between two magnetic poles having different polarities, and “center axis S2 of stator pole 14” refers to the center point of the two poles 14 of the stator. The connection line that passes through In an embodiment, each of the stator and rotor includes two magnetic poles. The number of stator poles may not be equal to the number of rotor poles, and in other embodiments, the stator and rotor may have more poles, eg, 4 or 6 poles. Can understand.

  In a preferred embodiment of the present disclosure, the bidirectional switch 300 is embodied as a triode AC semiconductor switch (TRIAC), the rectifier has a circuit as shown in FIG. 7, and the output control circuit is as shown in FIG. A simple circuit. The current input terminal of the first switch 31 of the output control circuit 30 is connected to the voltage output terminal of the full wave rectifier bridge, and the current output terminal of the second switch 32 is connected to the ground output terminal of the full wave rectifier bridge. The When the signal output from the AC power supply 100 is in a positive half cycle and the detection circuit 20 outputs a low level, the first switch 31 of the output control circuit 30 is turned on and the second switch 32 is turned off. As a result, the current is supplied to the AC power supply 100, the motor 200, the first input terminal of the integrated circuit 400, the voltage drop circuit, the output terminal of the second diode 612 of the full-wave rectifier bridge, and the output control circuit 30. The first switch 31 flows in the order listed, and returns from the output port to the AC power supply 100 through the bidirectional switch 300. After TRIAC 300 is turned on, the series branch formed by voltage drop circuit 500 and magnetic sensor integrated circuit 400 is shorted. The magnetic sensor integrated circuit 400 stops outputting when no voltage is supplied. However, since the current flowing through the two anodes of the TRIAC 300 is sufficiently large (higher than the sustain current of the TRIAC 300), the TRIAC 300 is a case where no drive current flows between the control electrode of the TRIAC 300 and the first anode. Even so, it remains on. When the signal output from the AC power supply 100 is in a negative half cycle and the detection circuit 20 outputs a high level, the first switch 31 of the output control circuit 30 is turned off and the second switch 32 is turned on. As a result, the current flows from the AC power source 100 to the output port through the bidirectional switch 300, the second switch 32 of the output control circuit 30, the ground output terminal of the full-wave rectifier bridge, the first diode. 611, flows through the first input terminal of the integrated circuit 400 and the motor 200, and returns to the AC power supply 100. Similarly, after the TRIAC 300 is turned on, the magnetic sensor integrated circuit 400 stops output by being short-circuited, while the TRIAC 300 can continue to be in the on state. When the signal output from the AC power supply 100 is in a positive half cycle and the detection circuit 20 outputs a high level, or the signal output from the AC power supply 100 is in a negative half cycle and the detection circuit 20 is When outputting a low level, neither the first switch 31 nor the second switch 32 of the output control circuit 30 is turned on, and the TRIAC 300 is turned off. Therefore, the output control circuit 30 can control the bidirectional switch 300 to be turned on or off in a predetermined manner based on the change in the polarity of the AC power supply 100 and the magnetic field detection information, thereby the stator. The energization of the winding 16 is controlled so that the variable magnetic field generated by the stator matches the position of the rotor magnetic field and drags the rotor to rotate in a single direction, This allows the rotor to rotate in a certain direction each time the motor is energized.

  In a motor component according to another embodiment of the present disclosure, the motor and the bidirectional switch can be connected in series across the external AC power source. The first series branch formed by the motor and the bidirectional switch is connected in parallel with the second series branch formed by the voltage drop circuit and the magnetic sensor integrated circuit. The output port of the magnetic sensor integrated circuit is connected to the bidirectional switch and controls the bidirectional switch to be turned on or off in a predetermined manner, thereby controlling the energization of the stator winding.

  The motor components provided by the above embodiment are applicable to the apparatus, particularly, but not limited to, pumps, fans, household appliances and vehicles. The household appliance can be, for example, a washing machine, a dishwasher, a kitchen ventilator, and a ventilator.

  The foregoing is merely illustrative of the preferred embodiments of the present disclosure and is not intended to limit the present disclosure in any manner. While preferred embodiments of the disclosure have been disclosed above, they should not be construed as limiting the disclosure. Those skilled in the art will be able to make various changes and modifications to the technical solutions of the present disclosure and equivalently without departing from the scope of the present disclosure in light of the methods and technical contents disclosed herein. You can make things. Accordingly, any changes, modifications, and equivalents made to the above embodiments in accordance with the technical essence of the present disclosure without departing from the content of the present disclosure shall fall within the protection scope of the present disclosure. .

11: Rotor 12: Stator core 14: Pole 15: Magnetic pole arc 16: Stator winding 17: Starting groove 30: Output control circuit 31: First switch 32: Second switch 33: Unidirectional switch 100: AC power supply 200: motor 400: sensor integrated circuit 611: first diode 612: second diode 613: third diode 614: fourth diode 621: Zener diode Pin: input port Pout: output port

Claims (10)

A housing, a semiconductor substrate disposed within the housing, an output port extending outward from the housing, an input port configured to connect to an external power source, and an electronic circuit disposed on the semiconductor substrate; The electronic circuit includes a rectifier, a power supply module, an output control circuit, and a detection circuit, wherein the rectifier is configured to convert the external power supply to a first DC power supply. And
The power supply module is configured to generate a second DC power supply different from the first DC power supply;
The detection circuit is configured to generate a corresponding control signal by detecting a signal supplied from the second DC power source and input to the sensor integrated circuit;
The output control circuit controls the sensor integrated circuit in response to at least the control signal, and a first state in which a current flows from the output port to the outside of the sensor integrated circuit and a current of the sensor integrated circuit Configured to operate at least one of the second states flowing from the outside to the output port;
A sensor integrated circuit.   The detection circuit includes a magnetic sensor configured to detect an external magnetic field and output a magnetic field detection signal suitable for the external magnetic field, and the magnetic field detection signal functions as the control signal. The sensor integrated circuit according to claim 1.   The sensor integrated circuit according to claim 1, wherein a voltage supplied to the output control circuit is different from a voltage of the second DC power supply.   The output control circuit is powered by the first DC power supply, and an average value of a voltage supplied to the output control circuit is higher than an average value of an output voltage of the second DC power supply. The sensor integrated circuit according to any one of claims 1 to 3. The power module further comprises a voltage stabilizer and a band gap reference voltage source,
The voltage stabilizer is configured to stabilize the voltage of the first DC power supply to a lower voltage that functions as a third DC power supply;
The bandgap reference voltage source is configured to be powered by the third DC power source and generate a reference voltage lower than the voltage of the third DC power source;
5. The voltage regulator is configured to be supplied with power from the first DC power source and to generate the second DC power source based on the reference voltage. The sensor integrated circuit according to any one of the above.   The sensor integrated circuit according to claim 5, wherein the voltage of the second DC power supply is lower than the voltage of the third DC power supply.   The at least one input port includes a first input port and a second input port configured to be connected to an external AC power source, and the integrated circuit converts the AC output from the external AC power source to DC. The integrated circuit according to claim 1, further comprising a rectifier circuit configured to convert. The external power source is an AC power source, and the output control circuit is
When the AC power supply is in a positive half cycle and the external magnetic field is in a first magnetic polarity, or the AC power supply is in a negative half cycle and the external magnetic field is the first magnetic polarity When in the opposite second magnetic polarity, allow load current to flow through the output port;
The AC power supply is in a negative half cycle and the external magnetic field is in the first magnetic polarity, or the AC power supply is in a positive half cycle and the external magnetic field is in the second magnetic polarity. 7. The sensor integrated circuit according to claim 2, wherein the sensor integrated circuit is configured to prevent load current from flowing through the output port in some cases.   A motor component comprising a motor and a motor drive circuit, wherein the motor drive circuit includes the sensor integrated circuit according to any one of claims 1 to 8.   The motor drive circuit further includes a bidirectional switch connected in series to the motor between both ends of an external AC power supply, and the output port of the sensor integrated circuit is connected to a control terminal of the bidirectional switch. The motor component according to claim 9, wherein:

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