JPWO2013014766A1 - Electronic control unit - Google Patents

Abstract

A power generation section having a composite coil in which a first coil and a second coil that generate an alternating voltage in response to a change in the direction of magnetic flux accompanying the rotation of the permanent magnet are connected in series; A first power supply unit for smoothing a result of full-wave rectification after wave rectification; rectification according to an AC voltage generated in the first coil, and rectification according to an AC voltage generated in the second coil A second power supply unit that smoothes a voltage at a connection point between the first coil and the second coil, and an arithmetic processing unit that operates using the power supplied from the first power supply unit as operating power. An electronic control unit comprising: a functional operation unit that operates using the power supplied from the second power supply unit as operating power under the control of the arithmetic processing unit.

Description

  The present invention relates to an electronic control device, and more particularly, to an electronic control device including a power generation unit that generates an alternating voltage according to a change in the direction of magnetic flux accompanying rotation of a permanent magnet.

  Conventionally, toys such as a vehicle toy provided with a power generation unit are known. In such a toy, for example, by rotating a permanent magnet using a driving force such as hand-pushing, an induced electromotive force is generated in a coil disposed in the vicinity of the permanent magnet and used as operating power for a light emitting element or the like. It has become.

  As a technique related to the power generation unit provided in such a toy, a technique for reducing the size and improving the power generation efficiency has been proposed (see Patent Document 1: hereinafter referred to as a conventional example). In the conventional technique, two coils are arranged in the vicinity of the permanent magnet so as to sandwich the permanent magnet, and these coils are connected in series in order to improve the power generation efficiency. Then, the operating power is directly supplied to the light emitting diode as the light emitting element from both ends of the coil in which the two coils are connected in series.

JP 2011-50725 A

  In the technology of the conventional example described above, the AC voltage generated by the power generation unit is directly used as the operating power of the light emitting diode. For this reason, when trying to expand the conventional technology to supply power to components other than light-emitting diodes, it is limited to components that can operate with AC voltage operating power, and DC voltage operating power is required. Multi-functionalization such as addition of a voice output function under the control of an arithmetic processing unit including a microprocessor cannot be realized.

  Therefore, it is conceivable to convert the AC voltage generated by the power generation unit into a DC voltage in order to be able to supply operating power of DC voltage. In this case, when there are parts other than the arithmetic processing unit that operate upon receiving the supply of the operating power of the DC voltage, there is a situation of power loss for the arithmetic processing unit due to an increase in power consumption of the parts other than the arithmetic processing unit. It is necessary to avoid it. In addition, since the electric power is generated by rotating the permanent magnet in the power generation unit by a driving force such as a manual push with a large fluctuation, a situation of power loss for the arithmetic processing unit due to instability of power supply capability is avoided There is also a need.

  It is considered that these situations can generally be avoided by providing a backup auxiliary power source such as a storage battery. However, if an auxiliary power supply for backup is provided, there is a concern that the apparatus configuration becomes complicated and the apparatus becomes large. For this reason, a configuration suitable for a small toy that can avoid the situation of power loss for the arithmetic processing unit with a configuration that does not include an auxiliary power source for backup while assuming a simple power generation unit included in the small toy. Technology is awaited.

  The present invention has been made in view of the above circumstances, and does not include an auxiliary power source for backup, but has a configuration including only a simple power generation unit as a power source, and power loss for an installed arithmetic processing unit An object of the present invention is to provide an electronic control device that can avoid such a situation.

  An electronic control device according to the present invention includes a power generation unit having a composite coil in which a first coil and a second coil that generate an alternating voltage in response to a change in the direction of magnetic flux accompanying rotation of a permanent magnet are connected in series; A first power supply unit that smoothes a result of full-wave rectification after full-wave rectification according to the generated AC voltage; rectification according to the AC voltage generated in the first coil; and generated in the second coil A second power supply unit that smoothes a voltage at a connection point between the first coil and the second coil while performing rectification according to an AC voltage to be operated; operates electric power supplied from the first power supply unit An electronic processing unit that operates as electric power; and a functional operation unit that operates using electric power supplied from the second power supply unit as operating power under the control of the arithmetic processing unit. Control device

  In the electronic control device of the present invention, the first power supply unit includes four rectifying elements constituting the first bridge circuit for full wave rectification; and smoothes the result of full wave rectification by the first bridge circuit. Two rectifying elements out of the four rectifying elements, wherein the second power supply unit configures a second bridge circuit together with the first coil and the second coil. And a second capacitive element that smoothes a result of full-wave rectification by the second bridge circuit.

  The electronic control device of the present invention further includes a voltage monitoring unit that monitors the output voltage of the first power supply unit and reports to the arithmetic processing unit whether the operation execution state or the operation stop state should be reported. Can be provided.

  Here, the content of the report to the arithmetic processing unit is changed so that the voltage monitoring unit has a hysteresis characteristic with respect to a change in the output voltage of the first power supply unit under the control of the arithmetic processing unit. You can make it.

  In the electronic control device of the present invention, the functional operation unit can be a sound output unit having a speaker.

  Here, the arithmetic processing unit detects a rotation speed of the permanent magnet based on a voltage change at one terminal of the composite coil, and performs sound output control corresponding to the detected rotation speed. Can be done against.

  The electronic control device of the present invention may further include a light emitting element that receives supply of operating power from one of the output terminals of the composite coil and whose blinking is controlled by the arithmetic processing unit.

  Here, the arithmetic processing unit detects a rotation speed of the permanent magnet based on a voltage change at one terminal of the composite coil, and performs flashing control corresponding to the detected rotation speed on the light emitting element. Can be done.

  According to the electronic control device of the present invention, the AC voltage generated by the combined coil in which the first coil and the second coil of the power generation unit are connected in series is smoothed after full-wave rectification, and the arithmetic processing unit is used as the operating power. Supplied to. On the other hand, the voltage at the connection point between the first coil and the second coil is smoothed while the rectification according to the AC voltage generated in the first coil and the rectification according to the AC voltage generated in the second coil are performed. And supplied to a functional operation unit other than the arithmetic processing unit. For this reason, since only one of the first coil and the second coil is used at each time point for supplying power to the functional operation unit, avoid the situation of power loss for the arithmetic processing unit. Can do.

  Therefore, according to the electronic control device of the present invention, the configuration includes only a simple power generation unit as a power source without including an auxiliary power source for backup, and for the arithmetic processing unit accompanying an increase in power consumption in the functional operation unit. The situation of power loss can be avoided.

  In the electronic control device according to the present invention, the first power supply unit smoothes the result of the full wave rectification by the four rectifying elements constituting the first bridge circuit for full wave rectification and the first bridge circuit. And a second power supply unit configured to include two of the four rectifier elements, a first coil and a second coil for full-wave rectification. When configured to include a second capacitive element that smoothes the result of full-wave rectification by the two-bridge circuit, the output impedance of the power supply for the functional operation unit is reduced from the output impedance of the power supply for the arithmetic processing unit Can be made. Therefore, efficient power supply can be performed when the functional operation unit is a low impedance load such as a speaker.

  Further, in the electronic control device of the present invention, when the voltage monitoring unit is further provided, the arithmetic processing is performed when the rotation speed of the permanent magnet in the power generation unit is decreased or the power supply capability is decreased when the rotation is stopped. By stopping the operation of the unit (transition to the standby state), the current consumption amount of the arithmetic processing unit is so small that it can be covered by the residual charge of the first capacitor element for smoothing in the first power supply unit It becomes. For this reason, it is possible to avoid a situation in which the rotation speed of the permanent magnet in the power generation unit is reduced or the power is lost to the arithmetic processing unit when the rotation is stopped.

  Here, the voltage monitoring unit has a hysteresis characteristic with respect to a change in the output voltage of the first power supply unit due to a driving force with a large variation such as hand pressing under the control of the arithmetic processing unit. If the report content for the arithmetic processing unit is changed, the operation execution state and the operation stop state of the arithmetic processing unit can be appropriately switched.

  In the electronic control device of the present invention, the functional operation unit is set as a sound output, and the arithmetic processing unit detects the rotation speed of the permanent magnet and performs sound output control corresponding to the detected rotation speed on the sound output unit. In this case, the sound output pattern can be changed according to the rotational speed of the permanent magnet.

  In the electronic control device according to the present invention, when the operation power is supplied from one of the output terminals of the composite coil and the light emitting element whose blinking is controlled by the arithmetic processing unit is further provided, the light emitting element is arranged in various patterns. Can be flashed. In addition, the load on the power generation unit due to light emission of the light emitting element can be minimized, and the possibility of power loss for the arithmetic processing unit and the sound output unit can be reduced.

  Here, when the arithmetic processing unit detects the rotation speed of the permanent magnet and performs the blinking control of the light emitting element corresponding to the detected rotation speed, the light emitting element according to the level of the rotation speed of the permanent magnet. The flashing pattern can be changed.

It is a block diagram for demonstrating the structure of the electronic controller which concerns on one Embodiment of this invention. It is the figure which extracted the element in connection with supply of the operating electric power to an arithmetic processing part. It is the figure which extracted the element in connection with supply of the operating electric power to a sound output part. It is the figure which extracted the element in connection with the detection of the rotational speed of the permanent magnet by the arithmetic processing part. It is the figure which extracted the element in connection with blinking of a light emitting diode. It is the figure which extracted the element in connection with the state transition of an arithmetic processing part.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, the same elements are denoted by the same reference numerals, and redundant description is omitted.

[Constitution]
FIG. 1 is a block diagram showing the configuration of an electronic control device 10 according to an embodiment. The electronic control device 10 will be described below on the assumption that it is mounted on a vehicle toy. In the following description, the term “connection” means an electrically conductive connection.

  As shown in FIG. 1, the electronic control device 10 includes a power generation unit 20 and a power supply unit 30 as first and second power supply units. In addition, the electronic control device 10 includes an arithmetic processing unit 40, a sound output unit 50, and a voltage monitoring unit 60. Further, the electronic control device 10 includes light emitting diodes LED1 and LED2 as light emitting elements, and a resistance element R1.

  The power generation unit 20 includes a permanent magnet PMG, a coil L1 as a first coil, and a coil L2 as a second coll. Here, the terminal b of the coil L1 and the terminal c of the coil L2 are connected. In the present embodiment, the coil L1 and the coil L2 are coils having the same specifications.

  The permanent magnet PMG is configured to rotate in conjunction with the wheel when the wheel of the toy vehicle on which the electronic control device 10 is mounted is manually pushed. As the permanent magnet PMG rotates, the direction of the magnetic flux generated by the permanent magnet PMG changes. As a result of the change in the direction of the magnetic flux causing electromotive force in the coils L1 and L2, an AC voltage (hereinafter also referred to as “first AC voltage”) is generated between the terminal a and the terminal b of the coil L1. At the same time, an AC voltage (hereinafter also referred to as “second AC voltage”) is generated between the terminal c and the terminal d of the coil L2. As a result, an AC voltage (hereinafter also referred to as “third AC voltage”) is generated between the terminal a of the coil L1 and the terminal d of the coil L2, which are both terminals of the combined coil of the coil L1 and the coil L2. .

  Note that, as described above, in the present embodiment, the coil L1 and the coil L2 are coils of the same specification, so the amplitude of the first AC voltage and the amplitude of the second AC voltage are the same. The amplitude of the third AC voltage is twice the amplitude of the first AC voltage or the second AC voltage.

  The power supply unit 30 includes four diodes D1 to D4 and two electrolytic capacitors C1 and C2. Here, the cathode terminal of the diode D1 and the cathode terminal of the diode D2 are connected. The anode terminal of the diode D1 and the cathode terminal of the diode D3 are connected to each other and to the terminal d of the coil L2.

  The anode terminal of the diode D2 and the cathode terminal of the diode D4 are connected to each other and to the terminal a of the coil L1. Further, the anode terminal of the diode D3 and the anode terminal of the diode D4 are at the ground level.

  The positive terminal of the electrolytic capacitor C1 is connected to the cathode terminal of the diode D1 and the cathode terminal of the diode D2, and is also connected to the power supply terminal CVDD of the arithmetic processing unit 40. The negative terminal of the electrolytic capacitor C1 is at the ground level.

  The + side terminal of the electrolytic capacitor C2 is connected to the terminal b of the coil L1 and the terminal c of the coil L2, and is also connected to the power supply terminal AVDD of the sound output unit 50. The negative terminal of the electrolytic capacitor C2 is at the ground level.

  The arithmetic processing unit 40 includes a microprocessor, a ROM (Read Only Memory), a RAM (Random Access Memory), and peripheral circuits, and controls the operation of the electronic control device 10 by executing a program. The arithmetic processing unit 40 includes input port terminals IP1 and IP2, output port terminals OP1 to OP3, and an audio signal output terminal ASO in addition to the power supply terminal CVDD described above.

  Arithmetic processing unit 40 receives a half-wave rectified signal of an AC voltage generated at terminal a of coil L1 at input port terminal IP1. The input port terminal IP1 receives the half-wave rectified signal via the resistance element R1. Furthermore, the arithmetic processing unit 40 receives the voltage monitoring result sent from the voltage monitoring unit 60 at the input port terminal IP2.

  The arithmetic processing unit 40 outputs a first blinking signal from the output port terminal OP1, and outputs a second blinking signal from the output port terminal OP2. The arithmetic processing unit 40 outputs a switch control signal from the output port terminal OP3 terminal. Further, the arithmetic processing unit 40 outputs an audio signal from the audio signal output terminal ASO.

  The sound output unit 50 includes a speaker SP. The sound output unit 50 has an audio signal input terminal ASI connected to the audio signal output terminal ASO of the arithmetic processing unit 40 in addition to the power supply terminal AVDD described above. And the sound output part 50 outputs the audio | voice corresponding to the audio | voice signal received by the audio | voice signal input terminal ASI from speaker SP.

  The voltage monitoring unit 60 includes a PNP transistor TR, a switch element SW, three resistance elements R2 to R4, and a Zener diode DZ. Here, the resistance values of the resistance elements R2 to R4 and the breakdown voltage of the Zener diode DZ are selected in advance according to a design specification that is determined to report a hysteresis characteristic that will be described later. Note that the resistance value of the resistance element R2 is sufficiently higher than the resistance value of the resistance element R3.

  The switch element SW is configured by, for example, a mechanical switch element or an FET (Field Effect Transistor) element. The switch element SW receives a switch control signal sent from the arithmetic processing unit 40 via the output port terminal OP3. When “ON” is designated by the switch control signal, the terminal e and the terminal f connected to the power supply terminal CVDD terminal of the arithmetic processing unit 40 become conductive. On the other hand, when “OFF” is designated by the switch control signal, the terminal e and the terminal f are in a non-conductive state.

  The resistance element R2 has one terminal connected to the power supply terminal CVDD terminal of the arithmetic processing unit 40 and the other terminal connected to the base terminal of the transistor TR. The resistor element R3 has one terminal connected to the terminal e of the switch element SW and the other terminal connected to the base terminal of the transistor TR. The resistance element R4 has one terminal connected to the collector terminal of the transistor TR and the input port terminal IP2 of the arithmetic processing unit 40, and the other terminal set to the ground level.

  The emitter terminal of the transistor TR is connected to the power supply terminal CVDD terminal of the arithmetic processing unit 40. The Zener diode DZ has a cathode terminal connected to the base terminal of the transistor TR and an anode terminal set to the ground level.

  The light emitting diode LED1 has an anode terminal connected to the terminal d of the coil L2 and the cathode terminal of the diode D3, and a cathode terminal connected to the output port terminal OP1 of the arithmetic processing unit 40. The light emitting diode LED2 has an anode terminal connected to the terminal a of the coil L1 and a cathode terminal of the diode D4, and a cathode terminal connected to the output port terminal OP2 of the arithmetic processing unit 40. The resistance element R1 has one terminal connected to the terminal a of the coil L1 and the cathode terminal of the diode D4, and the other terminal connected to the input port terminal IP1 of the arithmetic processing unit 40.

[Operation]
Next, the operation of the electronic control device 10 configured as described above will be described.

<Power supply to the arithmetic processing unit 40>
FIG. 2 shows elements of the electronic control device 10 related to power supply to the arithmetic processing unit 40. As shown in FIG. 2, the first bridge circuit for full-wave rectifying the AC voltage generated in the combined coil of the coil L1 and the coil L2 is configured by the diodes D1 to D4 connected as described above. . For this reason, as a result of the vehicle toy being pushed by hand, the AC voltage generated in the composite coil due to the rotation of the permanent magnet PMG interlocking with the wheels is full-wave rectified by the first bridge circuit. Then, the result of full-wave rectification by the first bridge circuit is smoothed by the electrolytic capacitor C1, and is supplied to the power supply terminal CVDD of the arithmetic processing unit 40 as operating power.

<Power supply to the sound output unit 50>
FIG. 3 shows elements of the electronic control device 10 related to power supply to the sound output unit 50. As shown in FIG. 3, the coil L1, the coil L2, the diode D3, and the diode D4 connected as described above constitute a second bridge circuit. In this case, as a result of the vehicle toy being pushed by hand, the AC voltage generated in the coil L1 due to the rotation of the permanent magnet PMG interlocked with the wheel is half-wave rectified, and the AC voltage generated in the coil L2 is half-wave rectified. Is done.

  As a result, the current flows through the coil L1 and the coil L2 in half cycles in a complementary manner. Therefore, full-wave rectification is executed by the second bridge circuit. The result of full-wave rectification by the second bridge circuit is smoothed by the electrolytic capacitor C2, and supplied to the power supply terminal AVDD of the sound output unit 50 as operating power.

  In the power supply to the sound output unit 50, the output impedance of the power source for the sound output unit 50 is half of the output impedance of the power source for the arithmetic processing unit 40 described above, and rectification in the power source for the sound output unit 50 is performed. The loss is also half of the rectification loss in the power supply for the arithmetic processing unit 40. As for the output impedance, the output impedance of the power source for the sound output unit 50 is determined by one impedance of the coil L1 and the coil L2, whereas the output impedance of the power source for the arithmetic processing unit 40 is the coil L1. Is determined by the sum of the impedance of the coil L2 and the impedance of the coil L2. Further, with respect to the rectification loss, the power supply for the sound output unit 50 is the rectification loss for one stage of the diode, whereas the power supply for the arithmetic processing unit 40 is the rectification loss for two stages of the diode. Because.

  For this reason, when driving the speaker SP in the sound output unit 50 that requires a certain amount of current, it is possible to supply power that is more suitable for driving the speaker SP than when the power source for the arithmetic processing unit 40 is shared. Further, when power is supplied to the sound output unit 50, power is supplied via only one of the coil L1 and coil L2 every half cycle, so that the supply current to the speaker SP is output in order to output a loud sound. Even when the amount increases, it is possible to avoid the situation of power loss for the arithmetic processing unit 40 described above.

<Detection of rotational speed of permanent magnet PMG>
FIG. 4 shows elements of the electronic control unit 10 related to detection of the rotational speed of the permanent magnet PMG by the arithmetic processing unit 40. As shown in FIG. 4, when the permanent magnet PMG rotates, an alternating voltage with a period corresponding to the rotation speed is generated in the composite coil. Then, the result of half-wave rectification of the voltage generated at the terminal a of the composite coil is sent to the input port terminal IP1 of the arithmetic processing unit 40 via the resistance element R1. The arithmetic processing unit 40 that has received the result of the half-wave rectification detects the rotational speed of the permanent magnet PMG, for example, based on the time change of the result of the half-wave rectification.

<Flashing of light emitting diodes LED1 and LED2>
FIG. 5 shows elements of the electronic control device 10 related to blinking of the light emitting diodes LED1 and LED2. As shown in FIG. 5, when an alternating voltage is generated in the composite coil, the result of half-wave rectification of the generated voltage at the terminal d is supplied to the anode terminal of the light emitting diode LED1, and the generated voltage at the terminal a is The result of the half wave rectification is supplied to the anode terminal of the light emitting diode LED2.

  On the other hand, when the rotational speed of the permanent magnet PMG is detected as described above, the arithmetic processing unit 40 determines the blinking pattern of the light-emitting diodes LED1 and LED2 based on the rotational speed. Then, the arithmetic processing unit 40 generates a first flashing signal corresponding to the determined flashing pattern of the light emitting diode LED1, and outputs the generated first flashing signal to the cathode of the light emitting diode LED1 via the output port terminal OP1. Send to terminal. In addition, the arithmetic processing unit 40 generates a second flashing signal corresponding to the determined flashing pattern of the light emitting diode LED2, and the generated second flashing signal is output to the cathode of the light emitting diode LED2 via the output port terminal OP2. Send to terminal. As a result, the light emitting diodes LED1 and LED2 blink in a blinking pattern corresponding to the rotation speed of the permanent magnet PMG.

  When the light emitting diode LED1 or the light emitting diode LED2 is turned on, the arithmetic processing unit 40 sets the level of the first blinking signal or the second blinking signal to “L” and turns off the light emitting diode LED1 or the light emitting diode LED2. In this case, the level of the first flashing signal or the second flashing signal is set to “H”.

<Audio output>
When the rotation speed of the permanent magnet PMG is detected as described above, the arithmetic processing unit 40 determines the pattern of the output sound from the sound output unit 50 based on the rotation speed. Then, the arithmetic processing unit 40 generates an audio signal corresponding to the determined output audio pattern, and sends the generated audio signal to the sound output unit 50 via the audio signal output terminal ASO.

  The sound output unit 50 receives the audio signal sent from the arithmetic processing unit 40 via the audio signal input terminal ASI. And the sound output part 50 outputs the audio | voice corresponding to the said audio | voice signal from the speaker SP (refer FIG. 1).

<State Transition of Arithmetic Processing Unit 40>
FIG. 6 shows elements related to the state transition of the arithmetic processing unit 40. As shown in FIG. 6, the arithmetic processing unit 40 is in switch operation indicating whether it is in an operation execution state or in an operation stop state (standby state) in which power consumption is dramatically reduced compared to the operation execution state. The signal is sent to the switch element SW of the voltage monitoring unit 60 via the output port terminal OP3. Here, in the operation execution state, the arithmetic processing unit 40 designates “OFF” by the switch control signal. On the other hand, when the operation is stopped, the arithmetic processing unit 40 maintains “ON” designation by the switch control signal. Under such control of the switch element SW by the arithmetic processing unit 40, the voltage monitoring unit 60 determines the operating power voltage (hereinafter referred to as “power supply voltage”) supplied to the power supply terminal CVDD of the arithmetic processing unit 40. Monitor.

  When the arithmetic processing unit 40 is in the operation execution state and the switch element SW is in the open state in accordance with the “OFF” designation by the switch control signal, the Zener diode DZ is shallowly biased only by the resistance element R2 having a high resistance value. . For this reason, the ON state of the transistor TR is maintained even when the power supply voltage is relatively low. For this reason, even if the power supply voltage becomes relatively low, the voltage level at the input port terminal IP2 of the arithmetic processing unit 40 connected to the collector terminal of the transistor TR is maintained at the “H” level.

  When the power supply voltage value further decreases and the arithmetic processing unit 40 approaches a first predetermined voltage value that is considered to be inoperable, the transistor TR changes to the OFF state. As a result, the voltage level at the input port terminal IP2 of the arithmetic processing unit 40 changes to the “L” level.

  When detecting that the voltage level at the input port terminal IP2 has changed from the “H” level to the “L” level, the arithmetic processing unit 40 first designates “ON” by the switch control signal. Subsequently, the arithmetic processing unit 40 transitions from the operation execution state to the operation stop state.

  When “ON” designation is received by the switch control signal, the switch element SW becomes conductive, and the power supply voltage is supplied to one terminal of the resistor element R3. As a result, the Zener diode DZ is also biased by the resistance element R3 having a resistance value lower than the resistance value of the resistance element R2, so that the bias of the Zener diode DZ is deepened. For this reason, even when the switch element SW becomes conductive, the transistor TR is maintained in the OFF state, and the voltage level at the input port terminal IP2 of the arithmetic processing unit 40 is maintained at the “L” level.

  Thereafter, even if the power supply voltage value rises and recovers to the first predetermined voltage value, the bias of the Zener diode DZ is deeper than the operation execution state of the arithmetic processing unit 40, so that the transistor TR And the voltage level at the input port terminal IP2 of the arithmetic processing unit 40 is maintained at the “L” level. Further, when the power supply voltage value rises and the transistor TR reaches the second predetermined voltage at which the transistor TR is turned on even when the bias of the Zener diode DZ is in the deep bias state, the transistor TR changes to the on state. As a result, the voltage level at the input port terminal IP2 of the arithmetic processing unit 40 changes to the “H” level.

  When detecting that the voltage level at the input port terminal IP2 has changed from the “L” level to the “H” level, the arithmetic processing unit 40 executes a startup process for returning to the operation execution state. In this activation process, the arithmetic processing unit 40 designates “OFF” by the switch control signal. Then, when the activation process is completed, the arithmetic processing unit 40 enters a normal operation execution state.

  When “OFF” designation is received by the switch control signal, the switch element SW is opened. As a result, the Zener diode DZ returns to the shallow bias state by only the resistance element R2 having a high resistance value, and prepares for the next power supply voltage drop.

That is, the voltage monitoring unit 60 constantly monitors the power supply voltage for the arithmetic processing unit 40 and has a hysteresis characteristic with respect to a change in the power supply voltage under the control of the arithmetic processing unit 40. The operation execution state or the operation stop state is reported. Here, as in the present embodiment, when the operating power is supplied by rotating the permanent magnet PMG of the power generation unit 20 with the driving force with a large fluctuation, the hysteresis characteristics reported by the voltage monitoring unit 60 are as follows: This is a mode for realizing (a) and (b).
(A) In the transition from the operation stop state to the operation execution state, when power is supplied to the arithmetic processing unit 40, the power generation unit 20 and the power supply unit 30 are accompanied by a rapid increase in the operating current of the arithmetic processing unit 40. In order to prevent a start-up failure due to a voltage drop caused by the impedance of the power supply, the voltage is determined to be “supplied that power is supplied to the arithmetic processing unit 40 in the operation execution state with a sufficient voltage for the operation”. The report which should shift to the operation execution state is performed.
(B) When shifting from the operation execution state to the operation stop state, the transition from the operation execution state to the operation stop state is performed in order to widen the voltage range in which the arithmetic processing unit 40 is in the operation execution state with respect to fluctuations in driving force. Reports that it should shift to the operation stop state when it becomes “near the minimum operating voltage of the arithmetic processing unit 40”.
For this reason, it is possible to effectively prevent a start-up failure associated with a load variation for the power generation unit 20 in the start-up process, and reasonably secure a period of the operation execution state of the arithmetic processing unit 40.

  Even in the operation stop state, the arithmetic processing unit 40 maintains the “ON” designation by the switch control signal and detects the change of the voltage level from the “L” level to the “H” level at the input port terminal IP2. The operating power for such operation is secured by the electric charge accumulated in the electrolytic capacitor C1.

  Further, when the power supply voltage value rises and exceeds the sum of the breakdown voltage value of the Zener diode DZ and the base-emitter voltage of the transistor TR, the current becomes the emitter terminal of the transistor TR, the base terminal of the transistor TR, and It flows to the ground level through the Zener diode DZ sequentially. As a result, an increase in the power supply voltage value is suppressed. For this reason, even if the rotational speed of the permanent magnet PMG becomes very high, destruction of the arithmetic processing unit 40 due to overvoltage is prevented.

  As described above, in this embodiment, the AC voltage generated by the combined coil in which the coil L1 and the coil L2 included in the power generation unit 20 are connected in series is smoothed after full-wave rectification, and is calculated as operating power. 40. On the other hand, the voltage at the connection point between the coil L1 and the coil L2 is smoothed while the rectification according to the AC voltage generated in the coil L1 and the rectification according to the AC voltage generated in the coil L2 are performed, and the sound output Supplied to the unit 50. For this reason, in order to supply power to the sound output unit 50, only one of the coil L1 and the coil L2 is used at each time point, so that a situation of power loss for the arithmetic processing unit 40 is avoided. Can do.

  Therefore, according to the present embodiment, an arithmetic process associated with an increase in power consumption in the sound output unit 50 due to a large volume output with a simple configuration including only the power generation unit 20 as a power source without providing a backup auxiliary power source. The situation of power supply loss for the unit 40 can be avoided.

  In the present embodiment, the result of full-wave rectification by the first bridge circuit for full-wave rectification composed of the diodes D1 to D4 is smoothed by the electrolytic capacitor C1, and supplied to the arithmetic processing unit 40 as operating power. Further, full-wave rectification by the second bridge circuit composed of the coils L1 and L2 and the diodes D3 and D4 is smoothed by the electrolytic capacitor C2 and supplied to the sound output unit 50 as operating power. For this reason, the output impedance and rectification loss of the power source for the sound output unit 50 can be half of the output impedance and rectification loss of the power source for the arithmetic processing unit 40. For this reason, an efficient electric power supply can be performed with respect to the sound output part 50 provided with the speaker of a low impedance load.

  Further, in the present embodiment, the voltage monitoring unit 60 monitors the power supply voltage value of the arithmetic processing unit 40 and reports to the arithmetic processing unit 40 whether it should be in an operation execution state or an operation stop state. For this reason, when the power supply voltage is lowered, the arithmetic processing unit 40 can appropriately stop the operation (shift to the standby state) before it becomes inoperable. For this reason, by stopping the operation of the arithmetic processing unit 40 when the rotation speed of the permanent magnet PMG in the power generation unit 20 is reduced or the power supply capacity is reduced when the rotation is stopped, the current consumption of the arithmetic processing unit 40 is reduced by electrolysis. The amount is so small that it can be covered by the residual charge of the capacitor C1. For this reason, the situation of the power supply loss for the arithmetic processing part 40 accompanying the fall of the power supply capability of the power generation part 20 can be avoided.

  In the present embodiment, the voltage monitoring unit 60 changes the report content to the arithmetic processing unit 40 so as to have a hysteresis characteristic with respect to the change in the power supply voltage under the control of the arithmetic processing unit 40. Here, the hysteresis characteristic effectively prevents a start-up failure due to a load change in the start-up process of the arithmetic processing unit 40 even if there is a change in the power supply voltage due to the use of a driving force with a large hand-change. At the same time, the operation execution state period of the arithmetic processing unit 40 can be reasonably secured. For this reason, the operation processing unit 40 can be appropriately switched between the operation execution state and the operation stop state.

  In the present embodiment, the arithmetic processing unit 40 detects the rotation speed of the permanent magnet PMG and performs sound output control corresponding to the detected rotation speed on the sound output unit 50. For this reason, the sound output pattern can be changed according to the rotational speed of the permanent magnet.

  Further, in the present embodiment, the light emitting diodes LED1 and LED2 are supplied with operating power from one of the output terminals of the composite coil, and blinking is controlled by the arithmetic processing unit 40. For this reason, the light emitting elements can be blinked in various patterns. Moreover, while being able to minimize the load of the electric power generation part 20 accompanying light emission of light emitting diode LED1, LED2, the possibility of the power supply loss for the arithmetic processing part 40 and the sound output part 50 can be reduced.

  In the present embodiment, the arithmetic processing unit 40 detects the rotation speed of the permanent magnet PMG, and performs blinking control of the light emitting diodes LED1 and LED2 corresponding to the detected rotation speed. For this reason, the flashing pattern of the light emitting diodes LED1 and LED2 can be changed according to the rotational speed of the permanent magnet PMG.

[Modification of Embodiment]
The present invention is not limited to the above-described embodiment, and various modifications are possible.

  For example, in the above-described embodiment, the function operation unit is the sound output unit, but may perform other functions.

  In the above embodiment, the sound output unit including the switch element and the speaker is arranged separately from the arithmetic processing unit. On the other hand, it is good also as a 1-chip structure so that at least one of parts other than a speaker in a switch element and a sound output part may be included in an arithmetic processing part.

  In the above embodiment, the detection result of the rotation speed of the permanent magnet is used for determining the output sound pattern and the blinking pattern of the light emitting diode. On the other hand, based on the detection result of the rotational speed of the permanent magnet, the arithmetic processing unit makes a transition between the operation execution state and the operation stop state, and omits the voltage monitoring unit in the above embodiment. Can do. In addition, when the rotation speed of the permanent magnet is increased, an external circuit that appropriately cuts off the charge supply to the electrolytic capacitor that smoothes the power supply voltage under the control of the arithmetic processing unit is prepared. You may make it prevent destruction of a process part.

  In the above embodiment, the present invention is applied to an electronic control device mounted on a toy vehicle. However, the present invention can also be applied to an electronic control device mounted on a toy other than a vehicle toy. The present invention can also be applied to an electronic control device mounted on a device other than the above.

  As described above, the present invention can be applied to an electronic control device including a power generation unit that generates an AC voltage according to a change in the direction of magnetic flux accompanying rotation of a permanent magnet.

DESCRIPTION OF SYMBOLS 10 ... Electronic controller 20 ... Power generation part 30 ... Electric power supply part (1st and 2nd electric power supply part)
DESCRIPTION OF SYMBOLS 40 ... Operation processing part 50 ... Sound output part 60 ... Voltage monitoring part PMG ... Permanent magnet L1 ... Coil (1st coil)
L2 ... Coil (second coil)
D1, D2 ... Diode (rectifier element (part of the first power supply unit))
D3, D4... Diode (rectifier (a part of the first and second power supply units))
C1 ... Electrolytic capacitor (first capacitor element (part of the first power supply unit))
C2 ... Electrolytic capacitor (second capacitance element (part of the second power supply unit))
LED1, LED2 ... Light emitting diode (light emitting element)
R1... Resistance element R2 to R4... Resistance element (part of the voltage monitoring unit)
SW: Switch element (part of voltage monitor)
TR ... Transistor (part of voltage monitor)
DZ ... Zener diode (part of voltage monitoring unit)

Claims (8)

A power generation unit having a composite coil in which a first coil and a second coil that generate an alternating voltage in response to a change in the direction of magnetic flux accompanying rotation of a permanent magnet are connected in series;
A first power supply unit that smoothes a result of full-wave rectification after full-wave rectification according to an alternating voltage generated in the composite coil;
Smoothing the voltage at the connection point between the first coil and the second coil while performing rectification according to the AC voltage generated in the first coil and rectification according to the AC voltage generated in the second coil A second power supply unit
An arithmetic processing unit that operates using the power supplied from the first power supply unit as operating power;
A function operating unit that operates using the power supplied from the second power supply unit as operating power under the control of the arithmetic processing unit;
An electronic control device comprising: The first power supply unit
Four rectifying elements constituting the first bridge circuit for full-wave rectification;
A first capacitive element that smoothes a result of full-wave rectification by the first bridge circuit,
The second power supply unit
Two rectifying elements of the four rectifying elements that constitute a second bridge circuit together with the first coil and the second coil;
A second capacitive element that smoothes a result of full-wave rectification by the second bridge circuit,
The electronic control device according to claim 1.   A voltage monitoring unit that monitors an output voltage of the first power supply unit and reports to the arithmetic processing unit whether the operation execution state should be set or the operation stop state should be further provided. Item 3. The electronic control device according to Item 1 or 2.   The voltage monitoring unit changes a report content to the arithmetic processing unit so as to have a hysteresis characteristic with respect to a change in the output voltage of the first power supply unit under the control of the arithmetic processing unit. The electronic control device according to claim 3.   The electronic control device according to claim 1, wherein the functional operation unit is a sound output unit including a speaker.   The arithmetic processing unit detects a rotational speed of the permanent magnet based on a voltage change at one terminal of the composite coil, and performs sound output control corresponding to the detected rotational speed on the sound output unit. The electronic control device according to claim 5, wherein the electronic control device is performed.   7. The light emitting device according to claim 1, further comprising a light emitting element that receives operation power from any one of the output terminals of the synthetic coil and whose blinking is controlled by the arithmetic processing unit. The electronic control device described.   The arithmetic processing unit detects a rotation speed of the permanent magnet based on a voltage change at one terminal of the composite coil, and performs blinking control corresponding to the detected rotation speed on the light emitting element. The electronic control device according to claim 7.

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