JP2012161173A - Power supply device and electrical apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement monitoring of a load operation state simply and without increasing power consumption.SOLUTION: A power supply device comprises: input voltage monitoring means 4 for monitoring power supply voltage received from a commercial power supply 3, a distributed power supply, or a power storage device; input current monitoring means 5 for monitoring power supply current supplied to mainly a first load device 2; a transformer 6 reducing all or part of the voltage that is higher than a rated voltage or higher than a desired voltage, when the power supply voltage is higher than the desired voltage and the power supply current is in a conduction state; power supply means 8 for supplying a second load device 7 with power from all or part of the voltage reduced by the transformer 6; and communication means 9 for transmitting a state of the first load device 2 to an external apparatus according to a signal from the input current monitoring means 5. Thereby, the desired objective is achieved.

Description

  The present invention is applied to a power supply device that supplies a load device, and generates a voltage source from an excess voltage of a power supply voltage received from a commercial power supply or a distributed power supply, and supplies the power to another load device. The present invention relates to a power supply apparatus that simultaneously contributes to low power consumption and monitors the use state of the load device by both detecting the use state of the load device and transmitting it via communication means.

  Conventionally, this type of power-saving power supply device includes a series transformer, a regenerative inverter, and control means, voltage and current detection means thereof.

  Patent Document 1 includes a series transformer 102 in which a primary winding is arranged between an AC power supply 100 and a load 101, and a regenerative inverter 103 whose output side is connected to a secondary winding of the series transformer 102. Yes, the regenerative inverter 103 takes out the electric power from the series transformer 102 and returns it to the supply side, and at least one of the output voltage and the output current of the regenerative inverter 103 is controlled, so that the secondary winding of the series transformer 102 is provided. The output voltage applied to the line can be continuously varied, and the supply voltage to the load 101 is reduced rather than the power supply voltage of the system such as the AC power supply 100, thereby substantially reducing the power consumption at the load. In addition, as shown in Example 21 of the same document 1, there is also described a configuration in which a plurality of power saving devices are coupled to a centralized monitoring device through communication lines.

  In Patent Document 2, a special human body sensor or the like is installed in a room to detect the presence or absence of human activity and perform predetermined communication.

JP 2002-335630 A JP 2006-48224 A

  However, the example of Patent Document 1 has an effect of suppressing consumption during operation of an electronic device, and constructs a centralized monitoring system that performs cooperation between the same type of devices installed in a plurality of communication functions. Therefore, it is impossible to detect the operation state of the load (for example, use / non-use detection) using the detection means for the power supply voltage and the load current. Even in the communication function, the load state is not transmitted / received to / from an external remote place via, for example, a mobile phone line or an Internet line.

  Further, in the example of Patent Document 2, it is necessary to newly install a human body sensor or the like, which gives a sense of incongruity in the investment of facilities or the landscape. In addition, there is a problem that human activity outside the detection range of the human body sensor is not detected, and there is a possibility that an animal such as a pet may be detected. In addition, in general, when the activity of a single person living alone or the presence / absence of a person is detected, the power consumption in the power system is small, the power supply voltage tends to rise above the reference value, and the power consumption tends to increase. . In addition, the power consumption of this monitoring system itself has a problem that it is impossible to detect the presence or absence of a person with power saving.

  Therefore, the present invention solves the above-described problems, and an object thereof is to realize monitoring of a load operation state simply and without increasing power consumption.

  In order to achieve this object, the power supply device of the present invention includes a commercial power supply, a distributed power supply, an input voltage monitoring means for monitoring a power supply voltage received from a power storage device, and a power supply supplied mainly to the first load device. Input current monitoring means for monitoring current, and when the power supply voltage is higher than the desired voltage and the power supply current is in the energized state, all or part of the voltage higher than the rated voltage or higher than the desired voltage In accordance with a signal from the voltage source generating means to be reduced, power supply means for supplying power to the second load device from all or part of the voltage reduced by the voltage source generating means, and a signal from the input current monitoring means, It is characterized by comprising a communication means for sending the state of the first load device to an external device, thereby achieving the intended purpose.

  According to the present invention, a power supply device that supplies power to a load device, that is, an input voltage monitoring unit that monitors a power supply voltage received from a commercial power supply, a distributed power supply, or a power storage device, and a power supply current supplied to the load device are monitored. Input current monitoring means and a voltage source that reduces all or part of a voltage that is higher than the rated voltage or higher than the desired voltage when the power supply voltage is higher than the desired voltage and the power supply current is energized. A power supply means for supplying power to the second load device from all or part of the voltage reduced by the voltage source generation means, and a commercial power source, a distributed power source, and a power storage device. The voltage portion higher than the desired voltage of the received voltage is reduced by the voltage source generation means, and the load device generates the power to be supplied to the second load device from the reduced voltage. Since it is possible to provide a power supply device that can exhibit a predetermined ability from moving, and at the same time, can also reduce the overall power consumption by supplying power to the second load device, It is possible to reduce the power consumption of the device and detect fluctuations in the current consumption of the load device. For example, the device is operated within a predetermined period such as one day, and the current consumption of the load device is a predetermined threshold value. By detecting that the current exceeds the current, it is determined that the operation has been performed, and the predetermined signal is transmitted. On the other hand, when the consumption current does not exceed the predetermined threshold current within a predetermined period, it is determined that the load device has not been operated, and the predetermined signal is transmitted. Thereby, it is possible to accurately detect the operation state of the device while suppressing the power consumption of the load device such as an electronic device. In addition, the power supply device of the present invention can be mounted between a power outlet and a power plug, for example, so that it can be applied to many load devices such as existing lighting fixtures, air conditioners, toilet seat heaters, etc. without configuring a special system. In contrast, the same effect can be easily obtained later.

Configuration diagram of power supply device 1 according to Embodiment 1 of the present invention Configuration diagram of the power supply means Flow chart of the control unit The flowchart of the control part of Embodiment 2 of this invention Configuration diagram of Embodiment 3 of the present invention Configuration diagram of power supply device 1d according to the fourth embodiment of the present invention Configuration diagram of power supply device 1e according to the fifth embodiment of the present invention Configuration diagram of conventional power supply

  The power supply device according to claim 1 of the present invention is a power supply device that supplies power to a load device, and mainly includes first input voltage monitoring means for monitoring a power supply voltage received from a commercial power supply, a distributed power supply, or a power storage device, and a first power supply device. Input current monitoring means for monitoring the power supply current supplied to the load device, and a voltage higher than the desired voltage or higher than the desired voltage when the power supply voltage is higher than the desired voltage and the power supply current is energized. From the voltage source generating means for reducing all or part of the voltage, the power supply means for supplying power to the second load device from all or part of the voltage reduced by the voltage source generating means, and the input current monitoring means By providing communication means for sending the state of the first load device to the external device in response to the signal, the load device can be driven at a desired voltage and thus can exhibit a predetermined capability. By supplying power to the second load device as well, overall power consumption can be reduced, and by monitoring the input current value of the first load device, operation of the load device can be stopped (use / Use) can be monitored, and the state can be transmitted via the communication means.

  According to a second aspect of the present invention, the power supply current change of the first load device that appears during a predetermined period measured by the time measuring means is detected, and the state change is detected via the communication means. By transmitting a predetermined signal to the external device, for example, it is possible to monitor from the outside that the household electrical appliance corresponding to the load device has been repeatedly used every day.

  The power supply apparatus according to claim 3 is integrated with main means such as input voltage monitoring means, input current monitoring means, voltage source generation means, power supply means and communication means, and is connected to a commercial power source (outlet) and a load. It can be arranged and connected to a power plug of a household electric appliance corresponding to the device, and there is an effect that a simpler and cheaper configuration can be achieved by retrofitting.

  Further, in the power supply device according to claim 4, the input current monitoring means determines that the first load device has been operated by comparing the load current value and the predetermined threshold current value within a predetermined time. By providing the means, the operation status and operation status of the load device can be monitored from a remote location.

  The power supply apparatus according to claim 5, wherein the communication means is included in the second load device, and supplies power when a power supply current is supplied to the first load device. As a result, it is possible to reduce the power consumption by minimizing the power supply to the device.

(Embodiment 1)
Hereinafter, the configuration of the power supply device 1 will be described in the first embodiment with reference to FIG. As shown in FIG. 1, the power supply device 1 includes an input voltage monitoring unit 4 that monitors the power supply voltage received by the load device 2 from the commercial power supply 3, and an input current monitoring unit 5 that monitors the power supply current supplied to the load device 2. When the power supply voltage is higher than the desired voltage and the power supply current is in an energized state, as a voltage source generating means for reducing all or part of the voltage higher than the rated voltage or higher than the desired voltage A transformer 6 and power supply means 8 for supplying power to the second load device 7 from all or part of the voltage reduced by the transformer 6 are provided. The communication unit 9 receives a command from the power supply unit 8 and establishes communication with a predetermined external device. For example, the change in the current value detected by the input current monitoring means 5 is monitored at regular intervals and transmitted by the input current communication means 9. In addition, auxiliary supply means 10 for supplying power to the second load device 7 when the power supply voltage is equal to or lower than a desired voltage is provided.

  Next, the configuration of the power supply means 8 will be described with reference to FIG. As shown in FIG. 2, the power supply means 8 includes a short-circuit relay unit 8a that short-circuits or opens both ends of the secondary winding 6b, a capacitor 8b arranged in parallel with the short-circuit relay unit 8a, and a secondary winding 6b. A reactor 8c having one connected in series, a converter unit 8d having the other connected to the reactor 8c, a secondary winding voltage detecting unit 8e for detecting a voltage across the secondary winding 6b, and a secondary detecting the power supply voltage The control part 8f which controls the short circuit relay part 8a and the converter part 8d from the information of the both-ends voltage of the coil | winding 6b is provided. The converter unit 8d includes switch units 8g to 8j and a smoothing capacitor 8k.

  Next, a flowchart of the control unit 8f will be described with reference to FIG. As illustrated in FIG. 3, the control unit 8 f receives the input current detection value from the input current monitoring unit 5. When the input current detection value exceeds a predetermined current value (for example, 1 A), it is determined that the load device 2 is in an operating state, and the process proceeds to the next step. If the current value is lower than the predetermined current value, the load device 2 determines that it is in a stopped state and exits the process. As a result of exiting this processing, the power supply means 8 is brought into a non-operating state, and as a result, only the power supply from the auxiliary supply means 10 is obtained. In the next step when the current value exceeds the predetermined current value, the effective value of the power supply voltage detected by the input voltage monitoring unit 4 is input, and when the voltage value exceeds a desired voltage value (for example, 100 V), the power consumption is reduced. It is determined that there is room, and processing for moving to the next step is performed. If the voltage is equal to or lower than the predetermined voltage value, it is determined that there is no room for reduction in power consumption, the power supply unit 8 is stopped, and the process is exited. Similarly, by exiting the process in this step, the power supply unit 8 becomes non-operating, so that only the power supply from the auxiliary supply unit 10 results. Next, if the load device 2 is in the operating state, the auxiliary supply means 10 sets the output voltage target value to the voltage that is normally operated (for example, 12 V) as the voltage to be supplied to the second load device 7, and enters the operating state. If not, the output voltage target value (for example, 3 V) corresponding to the standby state is set. By this processing, the output voltage target value is set according to whether the load device 2 is in the standby state or the operating state.

  As described above, the power supply device 1 includes the input voltage monitoring unit 4, the input current monitoring unit 5, the transformer 6, the power supply unit 8, and the auxiliary supply unit 10, and the control provided in the power supply unit 8. The switches 8g to 8j are controlled by the unit 8f, and the voltage part higher than the desired voltage of the received voltage from the power source is lowered by the voltage source generating means, and is supplied to the second load device from the lowered voltage. Since the load device is driven at a desired voltage to generate electric power, the load device can exhibit a predetermined capability, and at the same time, it also supplies power to the second load device, thereby reducing the overall power consumption. be able to.

  Although the load device is described as a single load, the power supply device may be driven as a power source of a plurality of load devices.

  Moreover, although the power source to be input is a commercial power source, a distributed power source such as a solar cell or a storage battery system may be a power source.

  The configuration of the communication means 9 and the line used may be any known system such as a wireless system, a wired system, a public line, or a home line. Specifically, if information is directly transmitted to an external device, it is easy to construct a system using a mobile phone line. If an existing line such as the Internet has already been laid, the same effect can be obtained even by regenerative use.

(Embodiment 2)
Hereinafter, the relationship between communication and input current monitoring will be described with reference to the flowchart of FIG. The description of the same configuration as the first embodiment is omitted. In this embodiment, the timer interrupt function is used for a predetermined time. In the sub-process in the timer interrupt process, load current data is fetched and stored in a predetermined memory, and a FLAG set and a timer restart are performed. Each time the timer counts up, the interrupt process is performed. In the main process, the presence or absence of this FLAG is determined, and the data transmission process from the communication means 9 is performed. The communication means 9 automatically sends data to a preset transmission destination by writing the corresponding data in a predetermined register.

  In the present embodiment, since a so-called microprocessor is used, the processing form is as described above. However, the same effect can be obtained even if the processing is performed by other processing means or other algorithms.

(Embodiment 3)
The configuration of the third embodiment will be described below with reference to FIG.

  In FIG. 5, 11 is an electric apparatus, which corresponds to the first load apparatus in the present application.

  Reference numeral 12 denotes an adapter BOX, which is composed of an input voltage monitoring unit 4, an input current monitoring unit 5, a power supply unit 8, a communication unit 9, and the like, and is a functional circuit including the wireless communication antenna 13 of the communication unit 9. The operation of each component is the same as that of the first and second embodiments, and a detailed description thereof will be omitted. Further, the adapter BOX 12 has a power plug 15 to be inserted into the wall outlet 14 and also has an outlet 12 into which the power plug 16 of the electric power device 11 is inserted.

  That is, by making these connections, the wall outlet voltage is appropriately adjusted when the lighting device 11 is turned on, so that it is possible not only to reduce power consumption more than necessary, but also to input current monitoring means 5. It is possible to remotely detect that the lighting device 11 has been turned on by sending out a change in the current value due to the above via the communication means 9 and the antenna 13, and unnecessary power consumption can be further reduced. Moreover, since the adapter BOX 12 is divided from the electronic device 11, it can be easily reused with other devices.

  In addition, in the present Example, although demonstrated using the electronic apparatus 11, the same effect can be acquired even if it uses for another apparatus.

(Embodiment 4)
Hereinafter, the configuration of the power supply device 1d according to the fourth embodiment will be described with reference to FIG. That is, in this embodiment, the input current monitoring means 5 can set a current threshold value by an external operation switch (not shown), and also sets a predetermined timer period by the operation switch (not shown). Thus, it is determined that the first load device has been operated within a predetermined period.

  In FIG. 6, the threshold current set by the switch and a predetermined period are taken as data, FLAG is cleared and a timer is started. FLAG is set when the threshold current is exceeded while taking in load current data from the input current monitoring means 5. On the other hand, this processing is repeated until the timer is up, but after UP, “abnormal command” and “normal command” are determined and transmitted via the communication means 9 depending on the presence or absence of FLAG. For example, the threshold current is set according to the operating current of the load device, and the timer period is set according to the data sampling cycle.

  As a result, it is possible to detect and monitor the activity of the elderly living alone based on the presence or absence of operation of a specific device. For example, special equipment is selected by selecting a device that must be operated every day, such as an electric pot, an air conditioner, a lighting device, and a toilet seat, as a load device and connecting to a power outlet via the adapter BOX 12 in the third embodiment. Remote monitoring can be realized even if there is no. The current threshold is selected to exceed the normal operation, and the timer period is set according to the device, for example, to send the sampling result once every 24 hours. Can be confirmed.

  In the present embodiment, the case where the adapter BOX 12 is used has been described. However, the same effect can be obtained even if this function is incorporated in a device.

  In apartments, dormitories, etc., it is possible to monitor forgetting of equipment in each room space and to monitor presence / absence of people.

  In the present embodiment, the current value from the input current monitoring means is compared with a preset threshold current, and is sent based on the result, but by sending current value data as needed, It is also possible to easily realize demand control by monitoring remote current monitors or their current consumption as needed.

(Embodiment 5)
Hereinafter, the configuration of the power supply device 1e will be described in the fifth embodiment with reference to FIG. That is, in the present embodiment, the communication means 9 is included in the second load device 7b and supplies power when a power supply current to the load device 2 is supplied.

  In FIG. 7, the power to the communication means 9 is supplied from the secondary winding 6b of the transformer 6 via the converter unit 8d when the power supply current to the load device 2 is supplied.

  As a result, power can be supplied to or cut off from the communication means 9 depending on whether or not the specific device is operated. For example, special equipment is selected by selecting a device that must be operated every day, such as an electric pot, an air conditioner, a lighting device, and a toilet seat, as a load device and connecting to a power outlet via the adapter BOX 12 in the third embodiment. Remote monitoring can be realized even if there is no communication, and remote monitoring communication is started only when a specific device is operated, and it is easy to check the activities of elderly people living alone from a remote location.

  In this embodiment, auxiliary power supply is also included through the auxiliary supply means 10, but if the operating voltage of the load device 2 is low or the power consumption of the communication means 9 is low. The same effect can be obtained even if the auxiliary supply means 10 is not included.

  Moreover, although it is the structure which performs signal transmission when there is operation of a specific apparatus, when there is no signal transmission, an activity, such as an elderly person living alone, can be confirmed by identifying without operation on the receiving side. .

  The power supply device according to the present invention includes an input voltage monitoring unit that monitors a power supply voltage received from a commercial power supply, a distributed power supply, or a power storage device, and when the power supply voltage is higher than a desired voltage, it is higher than a rated voltage, or Voltage source generating means for reducing all or part of a voltage higher than a desired voltage, and power supply means for supplying power to the second load device from all or part of the voltage reduced by the voltage source generating means In order to utilize the surplus portion of the power supply voltage to the load device for the second load device at the same time as the load device can be driven at a desired voltage and can exhibit a predetermined capability. In addition to reducing standby power, the operating power can be reduced, and the operating status of the load device can be detected and sent out properly. Useful it is possible to easily realize.

DESCRIPTION OF SYMBOLS 1 Power supply device 1d Power supply device 1e Power supply device 2 Load device 3 Commercial power supply 4 Input voltage monitoring means 5 Input current monitoring means 6 Transformer 6a Primary winding 6b Secondary winding 7 Second load device 7b Second load device 8 Power supply Means 9 Communication means 10 Auxiliary supply means

Claims (5)

An input voltage monitoring means for supplying power to the first load device, wherein the input voltage monitoring means monitors the power supply voltage received from the commercial power supply, distributed power supply or power storage device;
Input current monitoring means for mainly monitoring the power supply current supplied to the first load device;
Voltage source generation means for reducing all or part of a voltage higher than the rated voltage or higher than the desired voltage when the power supply voltage is higher than the desired voltage and the power supply current is in an energized state;
In a power-saving device comprising power supply means for supplying power to the second load device from all or part of the voltage reduced by the voltage source generation means,
A power supply apparatus comprising a communication means for sending the state of the first load device to an external device in response to a signal from the input current monitoring means.   The input current monitoring means includes a time measuring means, detects a change in power supply current of the first load device during a predetermined period, and transmits a signal of the change in state to a predetermined external device via the communication means. The power supply device according to claim 1.   The input voltage monitoring means, the input current monitoring means, the voltage source generation means, the power supply means and the communication means are integrated, and are arranged between the commercial power source, the distributed power source, the power storage device and the first load device, The power supply apparatus according to claim 1, wherein the power supply apparatus is electrically connected.   3. The power supply according to claim 2, wherein the input current monitoring means determines that the first load device has been operated by comparing a load current value with a predetermined threshold current value within a predetermined time. apparatus.   The power supply apparatus according to claim 1, wherein the communication unit is included in the second load apparatus, and power is supplied when a power supply current is supplied to the first load apparatus.

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