JP2009065335A - Device control device, device control system, and device control device - Google Patents

Abstract

To provide a device control device that can control a cooling target device, cut off power supply to the device control device when the power is turned off, and reduce power consumption.
In a device control device, a power supply unit receives power supply from a power supply control device. The CPU unit 33 that is a device control unit causes the projector 3 that is a cooling target device to perform cooling when a power-off operation is performed on the operation unit 37. The first power supply control device control unit 41 instructs the power supply control device 5 to stop supplying power when it is determined that the cooling is finished. The second power control device control unit 43 instructs the power control device 5 to start supplying power when a power-on operation is performed on the operation unit 37. Two control units enable both power supply to the device control device during the cooling period and activation of the device control device after power-off while stopping power supply to the device control device when the power is off .
[Selection] Figure 1

Description

  The present invention relates to a device control apparatus that controls a cooling target device that requires cooling when the power is turned off.

  Conventionally, a device control system including a device to be controlled and a device control device that controls the device is used in various fields. And in the background of the demand for power saving in consideration of environmental problems and the like, power saving is also required in the device control system.

  In order to reduce power consumption, it is effective to suppress power consumption when not in use. For example, in the device control system disclosed in Patent Document 1, the power on / off of peripheral devices is automatically controlled according to the power state of the host device, thereby reducing power consumption.

  By the way, among the devices to be controlled, there are devices that require cooling when the power is turned off. Such a device is hereinafter referred to as a cooling target device. In the case of the control system for the device to be cooled, the power is automatically turned off after the cooling is completed. A typical projector to be cooled includes a video projector. Therefore, in the following description, a video projector is taken up as an example of a cooling target device.

  FIG. 6 shows a configuration example of a conventional device control system. The device control system 101 includes a video projector 103 (hereinafter referred to as a projector 103), a power control device 105 that supplies power to the projector 103, and a device control device 107 that controls the video projector 103 and the power control device 105. The device control apparatus 107 is an AV controller, for example, and outputs video input from the AV device or the like to the video projector 103.

  In the configuration of FIG. 6, AC power is always supplied from the power source 109 to the projector 103 via the power control device 105. When the device control device 107 is an AV controller, the AC power may be supplied from the power supply device 105 to other AV devices. Further, AC power is directly supplied from the constant power source 109 to the device control device 107.

  The device control device 107 has a function of controlling power on / off of the projector 103 and also has a function of controlling power supply on / off by the power control device 105. Using these functions, the device control apparatus 107 performs power-off control in consideration of cooling as follows.

When the device control apparatus 107 is turned off and enters a standby state, the apparatus control apparatus 107 instructs the projector 103 to turn off the power. In the projector 103, a cooling operation is performed, and then the power is turned off. The device control device 107 waits only for the cooling period (fixed time), and then controls the power supply control device 105 to turn off the power supply. Thereby, the power supply of the projector 103 and the power supply control apparatus 105 can be turned off.
JP-A-7-5962

  However, in the conventional control device for the cooling target device, even if the power of the cooling target device can be turned off, the power supply to the device control device itself cannot be cut off, and wasteful power is consumed. was there. In the example of FIG. 6, even when the power of the projector 103 and the power supply device 105 is turned off, AC power is constantly supplied from the power source 109 to the device control device 107, and the device control device 107 is in the standby state. Therefore, useless power is consumed.

  In order to suppress the wasteful power consumption, it is effective to cut off the power supply to the device control device. However, when the control target is a cooling target device such as a projector, the following two functions need to be ensured as a precondition for power shutdown. First, as the device control apparatus needs to perform a control operation to turn off the power supply control apparatus after cooling, it must continue to receive power supply during the cooling period. Secondly, the device control device must be able to restart and start supplying power to the device control device itself when a power-on operation is performed in a power-off state.

  However, the conventional device control apparatus has only the function of the first point. In other words, the conventional device control apparatus does not have a configuration capable of shutting off the power supply while ensuring the power supply capability during the cooling period and the startup capability after the power is shut off. Therefore, as in the configuration of FIG. 6, the device control apparatus must be always connected directly to the power source and the power supply to the device control apparatus must be continued.

  In order to meet the above requirements, a manual AC power on / off control device may be added to the system of FIG. If this manual device is turned off after cooling and turned on at the time of startup, the above requirement is satisfied. However, adding an AC power on / off control device is disadvantageous in terms of simplification of the system, and it is troublesome for the user to bother operating the AC power on / off control device.

  The present invention has been made to solve the conventional problems, and its purpose is to control equipment to be cooled and to cut off the power supply to the equipment control device when the power is off with a simple configuration. An object of the present invention is to provide a device control apparatus that can reduce power consumption.

  The device control apparatus of the present invention is connected to a cooling target device that requires cooling when the power is turned off, and is connected to a power control device that supplies power to the cooling target device, and the cooling target device and the power source A device control device that controls the control device, the power supply unit being connectable to the power supply control device so as to receive power supply from the power supply control device, the operation unit receiving a power-on operation and a power-off operation, and the operation When the power-off operation is performed on the unit, the device to be cooled is caused to perform cooling, and the device control unit that determines the end of the cooling, and the power control when it is determined that the cooling has ended A first power control device controller that instructs the device to stop supplying power, and when a power-on operation is performed on the operation unit And a second power supply control unit control section for instructing the start of supply of power to the power supply controller.

  With this configuration, the power supply unit of the device control apparatus is connected to the power supply control apparatus so as to receive power supply from the power supply control apparatus. In response to the power-off operation, the device control unit causes the cooling target device to perform cooling. Then, when it is determined that the cooling is finished, when the first power supply control device controller instructs the power supply control device to stop supplying power, the power supply to the device control device itself is stopped. Thereafter, when a power-on operation is performed on the operation unit, when the second power control device control unit instructs the power control device to start supplying power, power supply to the device control device itself is also started. With such a configuration, the power supply to the device control device can be stopped when the power is turned off while both the power supply during the cooling period and the activation of the device control device after the power supply is cut off. As a result, the power consumption is reduced as compared with the case where the device control apparatus is put on standby in a standby state where power is supplied. Further, it is not necessary to add a manual power on / off control device separately. Therefore, the power consumption can be reduced by cutting off the power supply to the device control device when the power is off with a simple configuration.

  In the device control apparatus of the present invention, the second power control device control unit generates a power supply start instruction signal by mechanically operating in response to a power-on operation to the operation unit. With this configuration, the second power control device control unit has a mechanical configuration, so even when power supply to the device control device is stopped, an instruction to start power supply is issued in response to a power-on operation. It can output to the power supply control device. Therefore, power supply to the device control apparatus itself can be started from the power-off state, and activation after power-off can be performed.

  Further, in the device control apparatus of the present invention, the first power supply control device control unit is electrically operated in accordance with control from the device control unit after the cooling target device has been cooled. A supply stop instruction signal is generated. With this configuration, the first power supply control device control unit has an electrical configuration controlled by the device control unit. Therefore, it is possible to suitably realize a control in which the power supply control device is not automatically stopped but is automatically stopped after the cooling of the cooling target device.

  Further, in the device control apparatus of the present invention, the device control unit communicates with the cooling target device to make an inquiry about the end of cooling, and determines that the cooling has ended when the cooling target device is notified of the end of cooling. To do. With this configuration, power supply is cut off after the completion of cooling is confirmed. Accordingly, it is possible to prevent the power supply from the power control device to the cooling target device from being stopped before the cooling is completed, and it is also possible to prevent the power supply from continuing for a while after the cooling is completed, and thus it is possible to suitably reduce the power consumption. .

  The device control device of the present invention further includes an external device control signal output unit that outputs a power supply start instruction and a supply stop instruction signal to the power supply control device, and the device control unit performs the electrical processing by the electrical process. The first power control device controller has an electrical switch that is switched to a cooling end side by the processor, and the second power control device controller has an operation switch. A mechanical switch that mechanically switches between an on-operation side and an off-operation side in response to a power-on operation and a power-off operation to the unit, and the external device control signal output unit has the mechanical switch on the off-operation side. When the electrical switch is switched to the cooling end side, a first control signal corresponding to a power supply stop instruction is output, and the mechanical switch When switched on the operating side, and outputs a second control signal corresponding to a power supply start instruction. With this configuration, the device control device of the present invention including the first power supply control device control unit and the second power supply control device control unit can be realized by a simple configuration including the electrical switch and the mechanical switch, and cooling is performed. The power supply to the device control device can be stopped when the power is turned off while reducing both the power supply to the device control device during the period and the activation of the device control device after the power is turned off. Can do.

  In the device control device of the present invention, the power control device is built in the device control device. With this configuration, the configuration of the device control system including the device control device can be simplified and made compact.

  Another aspect of the present invention is a device control system, which includes a cooling target device that requires cooling when the power is turned off, a power supply control device that supplies power to the cooling target device, and the cooling A device control device for controlling the target device and the power supply control device, the device control device including a power supply unit connectable to the power supply control device so as to receive power supply from the power supply control device; An operation unit that accepts a power-off operation, a device control unit that determines whether the cooling target device performs cooling when a power-off operation is performed on the operation unit, and the cooling is completed. A first power control device controller that instructs the power control device to stop supplying power when it is determined that the power control device has been operated; When the power-on operation is performed for, and a second power supply control unit control section for instructing the start of supply of power to the power supply controller. This configuration also provides the advantages of the present invention described above.

  Another aspect of the present invention is a device control method, and the device control method is connected to a cooling target device that requires cooling when the power is turned off and supplies power to the cooling target device. Is a device control method by a device control device for controlling the cooling target device and the power supply control device, wherein the device control device is connected to the power supply control device so as to receive power supply from the power supply control device. When a power-on operation and a power-off operation for the operation unit are accepted, and when the power-off operation is performed on the operation unit, the cooling target device is cooled, and when it is determined that the cooling is finished The power control device is instructed to stop power supply, and the power control is performed when a power-on operation is performed on the operation unit. To indicate the start of the supply of power to the location. This configuration also provides the advantages of the present invention described above.

  As described above, the present invention provides both simple power supply to the device control device during the cooling period and activation of the device control device after the power is cut off. It is possible to provide a device control apparatus having an effect that power supply to the control apparatus can be stopped and power consumption can be reduced.

  Hereinafter, an apparatus control apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a device control system including a device control apparatus according to an embodiment of the present invention. In FIG. 1, the device control system 1 includes a video projector 3 (hereinafter, projector 3), a power supply control device 5, and a device control device 7.

  The projector 3 includes a control transmission / reception unit 11, a CPU unit 13, a cooling unit 15, and a power supply unit 17. The control transmission / reception unit 11 communicates control-related information with the device control device 7. The CPU unit 13 is configured to control the entire projector 3. The CPU unit 13 receives an instruction from the device control device 7 via the control transmission / reception unit 11 and operates according to the instruction from the device control device 7. The cooling unit 15 is a device for cooling the projector 3 and is configured by, for example, a fan. The cooling unit 15 is also controlled by the CPU unit 13.

  The projector 3 is an example of a cooling target device. In the present invention, the cooling target device is not limited to the projector 3. The cooling target device may be another type of device that requires cooling when the power is off.

  The power supply control device 5 includes an AC supply unit 21 and an AC supply control unit 23. The power control device 5 is connected to a constant power source 9 and receives supply of AC power from the constant power source 9. Then, the AC supply unit 21 of the power supply control device 5 supplies AC power to the device connected to the power supply control device 5. In the present embodiment, as illustrated, not only the projector 3 but also the device control device 7 is connected to the power supply control device 5. Therefore, the equipment control device 7 also receives AC power from the power supply control device 5.

  The AC supply control unit 23 is configured to control the AC supply unit 21 to start and stop power supply.

  As a specific configuration, the constant power source 9 corresponds to a so-called power outlet. The power supply control device 5 is a device that can connect a power cord of a connected device in the same manner as a power outlet. A plurality of devices can be connected to the power supply control device 5. The AC supply control unit 23 is connected to the control input terminal, and controls the AC supply unit 21 according to a control signal to the control input terminal. In the present embodiment, since the device control device 7 controls the power supply control device 5, a control signal is sent from the device control device 7.

  Next, the configuration of the device control device 7 will be described. The device control device 7 includes a power supply unit 31, a CPU unit 33, and a control transmission / reception unit 35.

  The power supply unit 31 supplies the power supplied from the power control device 5 to the entire device control device 7. In the device control system 1 of the present embodiment, the power supply unit 31 is connected to the power supply control device 5. Specifically, the power supply unit 31 is connected to the power cord of the device control device 7, and the plug of the power cord is inserted into the insertion port of the power control device 5.

  The CPU unit 33 controls the entire device control apparatus 7. The CPU unit 33 corresponds to the device control unit of the present invention and controls the projector 3. The control signal is sent to the projector 3 via the control transmission / reception unit 35. The control transmission / reception unit 35 is, for example, an RS232C communication unit. The CPU unit 33 causes the projector 3 to perform cooling by communication control using the control transmission / reception unit 35 and determines the end of cooling.

  In addition, the device control device 7 includes an operation unit 37 and a main body activation control unit 39. The operation unit 37 is configured to be operated by a user and may include a switch, a button, a dial, and the like. A power-on operation and a power-off operation are also performed on the operation unit.

  The main body activation control unit 39 is configured to perform activation control according to a power-on operation to the operation unit 37. Specifically, the main body activation control unit 39 is a mechanical switch, and is provided to transmit a power-on operation (activation operation) to the operation unit 37 to the CPU unit 33.

  Furthermore, the device control device 7 includes a first power control device control unit 41 and a second power control device control unit 43 in order to control the power control device 5.

  The first power supply control device control unit 41 is configured to control the power supply control device 5 by being controlled by the CPU unit 33 which is a device control unit. When the power-off operation is performed on the operation unit 37, the CPU unit 33 causes the cooling target device to perform cooling and determines the end of cooling. When it is determined that the cooling has ended, the first power supply control device control unit 41 instructs the power supply control device 5 to stop supplying power.

  On the other hand, the second power supply control device control unit 43 is configured to control the power supply control device 5 in accordance with an operation on the operation unit 37. When a power-on operation is performed on the operation unit 37, the second power control device control unit 43 instructs the power control device 5 to start supplying power.

  In the above, the 1st power supply control device control part 41 has the electric composition controlled by CPU part 33 which is an apparatus control part. This electrical configuration is, for example, a transistor as will be described later. With this control, it is not necessary to stop power supply instantaneously in response to an operation on the operation unit 37, and power supply stop control can be performed after a certain time. Therefore, it is possible to suitably realize the control of stopping the power supply after waiting for the cooling to end.

  On the other hand, the second power supply control device control unit 43 has a mechanical configuration that operates mechanically in response to an operation on the operation unit 37. This mechanical configuration is, for example, a switch that mechanically opens and closes a contact in response to a button operation on the operation unit 37. This control is passive control and does not require a power source. Therefore, the second power supply control device control unit 43 can output a power supply start instruction signal to the power supply control device 5 even in a state where no AC power is supplied to the device control device 7. The electrical configuration of the second power control device control unit 43 is, for example, a switch that opens and closes mechanically in response to a button operation on the operation unit 37.

  The configuration of the device control device 7 has been described above with reference to FIG. The device control apparatus 7 according to the present embodiment is an AV controller having a projector control function, for example. The AV controller may be connected to an AV device, a line connection device, a microphone, and the like in addition to the video projector 3. The AV controller may also be connected to a video display device other than the projector, such as a display device. The AV controller outputs video input from an AV device or the like from a projector and other video display devices. By providing such an AV controller with the power control configuration of the present embodiment, the AV controller can function as the device control apparatus 7.

  Next, FIGS. 2 and 3 show suitable examples of circuit configurations corresponding to the above-described configuration related to power supply control. Also, FIG. 2 shows a sequence when the power is turned off, and FIG. 3 shows a sequence when the power is turned on.

  2 and 3, the control CPU 51 corresponds to the CPU unit 33 in FIG. 1, the transistor 53 corresponds to the first power supply control device control unit 41, and the energization switch 55 corresponds to the second power supply control device control unit 43. .

  The transistor 53 has a base connected to the control CPU 51, a collector connected to the external device control terminal 57, and an emitter grounded. The transistor 53 functions as a switch and is turned on / off under the control of the control CPU 51.

  The energization switch 55 opens and closes according to a power on / off operation with respect to the operation unit 37. One end of the energization switch 55 is grounded, and the other end is connected to the control CPU 53 and the external device control terminal 57. More specifically, the line from the energizing switch 55 and the line from the transistor 53 merge as shown in the figure, and then connected to the external device control terminal 57. Thereby, both the energization switch 55 and the transistor 53 are connected to the external device connection terminal 57.

  The external device control terminal 57 is connected to the power supply control device 5. When the Hi signal is output from the external device control terminal 57, the power supply control device 5 stops the power supply. When the Lo signal is output, power supply is started. That is, the Hi signal corresponds to a power supply stop instruction, and the Lo signal corresponds to a power supply start instruction.

  Further, the RS232C connection unit 59 constitutes the control transmission / reception unit 35. The control CPU 51 communicates control-related information with the projector 3 via the RS232C connection unit 59.

  Next, referring to FIG. 2, a power-off sequence according to the above configuration will be described. (1) First, the energization switch 55 is opened by turning off the power to the operation unit, and the potential at the same portion becomes Hi. At this time, the transistor 53 is on, the external device control terminal 57 is grounded via the transistor 53, and the output signal of the external device control terminal 57 is Lo. Therefore, the power supply control device 5 is not yet stopped at this point. (2) When the energization switch 55 becomes Hi, the control CPU 51 sends a cooling start (power off) command to the projector 3 via the RS232C. (3) The projector 3 starts cooling. (4) The control CPU 51 periodically sends a cooling end inquiry to the projector 3. (5) When the cooling is finished, a cooling completion notification is received by the control CPU 51. (6) The control CPU 51 turns off the transistor 53. As a result, the collector potential of the transistor 53 is switched from Lo to Hi. (7) Since the transistor 53 is Hi and the energization switch 55 is Hi, the output signal of the external device control terminal 57 is also Hi. The Hi signal is output to the power supply control device 5, and in the power supply control device 5, the AC supply control unit 23 controls the AC supply unit 21 to stop the power supply.

  Next, a power-on sequence will be described with reference to FIG. (1) The energization switch 55 is closed by turning off the power to the operation unit, and the potential at the same part becomes Lo. (2) When the energization switch 55 becomes Lo, the output signal of the external device control terminal 57 becomes Lo. The Lo signal is output to the power supply control device 5, and in the power supply control device 5, the AC supply control unit 23 controls the AC supply unit 21 to start power supply.

  Next, the operation of the device control apparatus 7 according to the present embodiment will be described with reference to FIG. 4 and FIG.

  FIG. 4 shows the operation when the power is off. When a power-off operation is performed on the operation unit 37, the device control apparatus 7 shifts to an off mode (S1). When the power-off operation is performed, the second power control device control unit 43 that is a mechanical configuration enters the off control state, but the first power control device control unit 41 remains in the on control state (Note that The off control state of the second power supply controller control unit 43 corresponds to the open state of the energization switch 55 in FIG. 2, and the on control state of the first power supply controller control unit 41 corresponds to the on state of the transistor 53 in FIG. ). Therefore, the power supply control device 5 is not yet turned off at this stage, and the supply of AC power from the power supply control device 5 does not stop at this stage.

  When the CPU 33 shifts to the off mode, it sends a cooling start instruction to the projector 3 (S3). The cooling start instruction is sent to the projector 3 via the control transmission / reception unit 35. In the projector 3, a cooling start instruction is sent from the control transmission / reception unit 11 to the CPU unit 13, and the CPU unit 13 starts cooling.

  After sending the cooling instruction, the CPU 33 periodically sends an inquiry to the projector 3 as to whether or not the cooling is finished. When the cooling is completed, the projector 3 sends a cooling completion response to the device control device 7. The cooling completion reply is sent to the CPU unit 33 via the control transmission / reception unit 11 and the control transmission / reception unit 35. When receiving the cooling completion reply from the projector 3, the CPU 33 determines that the cooling has been completed (S5).

  When it is determined that the cooling is finished, the CPU unit 33 controls the first power supply control device control unit 41 to instruct the power supply stop. In response to this instruction, the first power supply controller control unit 41 sends a power supply stop instruction signal (AC supply stop instruction) to the power supply controller 5 (S7). In response to the power supply stop instruction, the power supply control device 5 stops the supply of AC power. At this time, the AC supply control unit 23 of the power supply control device 5 controls the AC supply unit 21 to stop the power supply. Thereby, the supply of AC power to the device control device 7 and the projector 3 is stopped (S9).

  FIG. 5 shows the operation when the power is turned on. When a power-on operation is performed on the operation unit 37, the device control apparatus 7 shifts to an on mode (S11). At this time, since a power-on operation has been performed on the operation unit 37, the second power control device control unit 43 performs on control of the power control device 5 (S13). Here, the second power supply control device control unit 43 sends a power supply start instruction signal (AC supply start command) to the power supply control device 5. In response to this power supply start instruction, the power supply control device 5 starts supplying AC power (S15). In the power supply control device 5, the AC supply control unit 23 controls the AC supply unit 21 to start power supply. As a result, the power supply control device 5 starts supplying power to the projector 3 and the device control device 7. Upon receiving the AC power supply, the projector 3 and the device control device 7 are activated (S17).

  As described above, in the present embodiment, the device control device 7 receives power supply from the power supply control device 5. Further, in order to control the power supply control device 5, two control units such as a first power supply control device control unit 41 and a second power supply control device control unit 43 are provided.

  Here, in the present embodiment, it is assumed that the second power supply control device controller 43 is provided. The second power supply control device control unit 43 is configured to perform passive control with a mechanical configuration, and cannot control the power supply control device 5 by determining the state of the projector 3. On the other hand, if only the first power supply control device control unit 41 is provided, it becomes impossible to restart after the power supply to the device control device 7 is stopped.

  Therefore, the device control device 7 according to the present embodiment includes both the first power control device control unit 41 and the second power control device control unit 43 as a configuration for controlling the power control device 5. The first power supply control device control unit 41 functions together with the CPU unit 33 to realize CPU control for the power supply control device 5 and stops the power supply to the power supply control device 5 after cooling, thereby supplying power to the device control device 7 self-confidence. Supply is also cut off. As described above, the second power supply control device control unit 43 performs a mechanical operation according to the operation on the operation unit 37, and realizes the activation of the device control device 7 from the power cut-off state by passive control that does not require a power supply. . The two controls such as the system control (CPU control) of the first power control device control unit 41 and the system control (passive control, energization switch (power switch) control) of the second power control device control unit 43 are logical. To the power supply control device 5 due to the OR relationship. Thereby, the power supply to the device control device 7 can be stopped when the power is turned off while both the AC power supply to the device control device during the cooling period and the activation of the device control device after the AC power supply is cut off are established. .

  Further, as described above, in the present embodiment, the device control device 7 communicates with the projector 3 and confirms the completion of cooling, and then shuts off the AC power supply. Therefore, the AC power supply is not stopped before the projector 3 is cooled, and the AC power supply is not continued for a while after the cooling is completed.

  However, the above inquiry may not be performed within the scope of the present invention. For example, the CPU unit 33 may measure the time from the start of cooling using a timer. Then, when a predetermined cooling period has elapsed, the CPU unit 33 may cause the first power supply control device control unit 41 to output a power supply stop instruction signal. Although this configuration is disadvantageous in terms of the accuracy of determining the cooling completion timing, the processing can be simplified.

  In the example of the above embodiment, the device control device 7 and the power supply control device 5 are separate. However, the power supply control device 5 may be built in the device control device 7 within the scope of the present invention, whereby the device control device 7 and the power supply control device 5 may be integrated. Also in this case, various configurations of the device control device 7 and the power supply control device 5 described above are provided, and the above-described power-on and power-off control is suitably performed.

  The device control apparatus 7 according to the embodiment of the present invention has been described above. According to the present embodiment, the power supply unit 31 of the device control device 7 is connected to the power supply control device 5 so as to receive power supply from the power supply control device 5. In response to the power-off operation, the device control unit causes the cooling target device to perform cooling (in the above example, the device control unit and the cooling target device are the CPU unit 33 and the projector 3, respectively). When the end of cooling is determined, when the first power supply control device control unit 41 instructs the power supply control device 5 to stop supplying power, the power supply to the device control device 7 itself stops. Thereafter, when a power-on operation is performed on the operation unit 37, if the second power supply control device control unit 43 instructs the power supply control device 5 to start supplying power, the power supply to the device control device 7 itself is also performed. Be started. With such a configuration, the power supply to the device control device 7 can be stopped when the power is turned off while both the power supply during the cooling period and the start-up of the device control device 7 after the power supply is cut off. As a result, the power consumption is reduced as compared with the case where the device control apparatus 7 is put on standby in a standby state where power is supplied. Further, it is not necessary to add a manual power on / off control device separately. Therefore, the power consumption can be reduced by cutting off the power supply to the device control device 7 when the power is off with a simple configuration.

  In the present embodiment, the second power supply controller control unit 43 has a mechanical configuration that generates a power supply start instruction signal by mechanically operating in response to a power-on operation to the operation unit 37. Have. This mechanical configuration is, for example, the energization switch 55 of FIG. With this configuration, since the second power control device control unit 43 has a mechanical configuration, even when the power supply to the device control device 7 is stopped, the supply of power is started in response to the power-on operation. An instruction can be output to the power supply control device 5. Therefore, the power supply to the device control device 7 itself can be started from the power-off state, and the activation after the power-off is possible.

  Further, in the present embodiment, the first power supply control device control unit 41 operates electrically in accordance with control from the device control unit (CPU unit 33) after the cooling target device (projector 3) is cooled. By doing so, it has an electrical configuration for generating a power supply stop instruction signal. This electrical configuration is, for example, the transistor 53 of FIG. With this configuration, the first power supply controller control unit 41 has an electrical configuration controlled by the device control unit. Therefore, it is possible to suitably realize the control in which the power supply control device 5 is not automatically stopped but instantaneously stopped after the cooling of the cooling target device.

  Further, in the present embodiment, both the electrical configuration of the first power supply control device control unit 41 and the mechanical configuration of the second power supply control device control unit 43 are provided. The former performs power supply stop control after cooling off, and the latter performs power supply start control for starting from the power-off state. Therefore, it is possible to suitably realize a device control apparatus that can cut off the power supply when the power is turned off while realizing both of these controls.

  Further, in the present embodiment, the device control unit (CPU unit 33) communicates with the cooling target device (projector 3) to make an inquiry about the end of cooling. Judge that it is finished. With this configuration, power supply is cut off after the completion of cooling is confirmed. Accordingly, it is possible to prevent the power supply from the power supply control device 5 to the cooling target device from being stopped before the cooling is completed, and it is also possible to prevent the power supply from continuing for a while after the cooling is completed. it can.

  Further, in the present embodiment, as shown in the examples of FIGS. 2 and 3, the device control device 7 outputs the power supply start instruction and supply stop instruction signals to the power supply control apparatus 5. A device control signal output unit is provided, the device control unit includes a processor that controls the cooling target device by electrical processing, and the first power supply control device control unit 41 is electrically switched to the cooling end side by the processor. The second power supply control device control unit 43 has a mechanical switch that mechanically switches to an on operation side and an off operation side in response to a power-on operation and a power-off operation to the operation unit. When the mechanical switch is switched to the OFF operation side and the electrical switch is switched to the cooling end side, the control signal output unit outputs the first control signal corresponding to the power supply stop instruction. Outputs, mechanical switch when switched on the operating side, and outputs a second control signal corresponding to a power supply start instruction. Here, the external device control signal output unit, the processor, the electrical switch, and the mechanical switch correspond to the external device control terminal 57, the control CPU 51, the transistor 53, and the energization switch 55 shown in FIGS. In addition, the electrical switch is connected to the external device control signal output unit, and the mechanical switch is connected to the processor and the external device control signal output unit. The cooling end side of the electrical switch corresponds to the off side of the transistor 53. The on-operation side and the off-operation side of the mechanical switch correspond to “close” and “open” of the energization switch 55, respectively. Further, the first control signal (power supply stop) and the second control signal (power supply start) are signals of different potentials in the circuits of FIGS. 2 and 3, respectively, a Hi signal and a Lo signal. According to said structure, the apparatus control apparatus 7 provided with the 1st power supply control apparatus control part and the 2nd power supply control apparatus control part is realizable by simple structure provided with the electrical switch and the mechanical switch, and a cooling period The power supply to the device control device 7 can be stopped when the power is turned off while both the power supply to the device control device 7 in the middle and the activation of the device control device 7 after the power cut off are realized, thereby reducing power consumption. can do.

  In the present embodiment, the power supply control device 5 may be incorporated in the device control device 7. With this configuration, the configuration of the device control system 1 including the device control device 7 can be simplified and made compact.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that those skilled in the art can modify the above-described embodiments within the scope of the present invention.

  As described above, the device control apparatus according to the present invention has an effect that the power supply to the device control apparatus can be stopped and the power consumption can be reduced when the power is turned off with a simple configuration. It is useful as a device control device.

The block diagram of the equipment control system containing the equipment control apparatus in embodiment of this invention The figure which shows the circuit structure for the power supply control in embodiment of this invention with the sequence of power-off The figure which shows the circuit structure for the power supply control in embodiment of this invention with the sequence of power-on The flowchart which shows the operation | movement at the time of power-off of the apparatus control apparatus in embodiment of this invention The flowchart which shows the operation | movement at the time of power-on of the apparatus control apparatus in embodiment of this invention Block diagram of a device control system including a conventional device control device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Device control system 3 Projector 5 Power supply control device 7 Device control device 21 AC supply part 23 AC supply control part 31 Power supply part 33 CPU part 35 Control transmission / reception part 37 Operation part 39 Main body starting control part 41 1st power supply control apparatus control part 43 Second power control device control unit 51 Control CPU
53 Transistor 55 Power switch 57 External device control terminal

Claims (8)

A device control device that is connected to a cooling target device that requires cooling when the power is turned off, and that is connected to a power control device that supplies power to the cooling target device, and controls the cooling target device and the power control device Because
A power supply unit connectable to the power supply control device so as to receive power supply from the power supply control device;
An operation unit for receiving a power-on operation and a power-off operation;
When a power-off operation is performed on the operation unit, the cooling target device performs cooling, and a device control unit that determines the end of cooling,
A first power supply control device controller that instructs the power supply control device to stop supplying power when it is determined that cooling has ended;
A second power control device control unit that instructs the power control device to start supplying power when a power-on operation is performed on the operation unit;
A device control apparatus comprising:   2. The device according to claim 1, wherein the second power control device control unit generates a power supply start instruction signal by mechanically operating in response to a power-on operation to the operation unit. Control device.   The first power supply control device controller generates a power supply stop instruction signal by operating electrically according to the control from the device controller after the cooling target device is cooled. The apparatus control apparatus according to claim 1 or 2, characterized in that   The device control unit communicates with the cooling target device to make an inquiry about the end of cooling, and determines that the cooling has ended when the cooling target device is notified of the end of cooling. 4. The device control apparatus according to any one of 3. An external device control signal output unit that outputs a power supply start instruction and a supply stop instruction signal to the power supply control device;
The device control unit has a processor that controls the cooling target device by electrical processing,
The first power supply controller control unit has an electrical switch that is switched to a cooling end side by the processor,
The second power control device control unit has a mechanical switch that mechanically switches to an on operation side and an off operation side in response to a power on operation and a power off operation to the operation unit,
The external device control signal output unit outputs a first control signal corresponding to a power supply stop instruction when the mechanical switch is switched to an off operation side and the electrical switch is switched to a cooling end side, and the mechanical switch 5. The device control apparatus according to claim 1, wherein when the switch is switched to the ON operation side, a second control signal corresponding to a power supply start instruction is output.   6. The device control apparatus according to claim 1, wherein the power supply control device is built in the device control apparatus. Device control comprising: a cooling target device that requires cooling when the power is turned off; a power control device that supplies power to the cooling target device; and a device control device that controls the cooling target device and the power control device In the system,
The device control device
A power supply unit connectable to the power supply control device so as to receive power supply from the power supply control device;
An operation unit for receiving a power-on operation and a power-off operation;
When a power-off operation is performed on the operation unit, the cooling target device performs cooling, and a device control unit that determines the end of cooling,
A first power supply control device controller that instructs the power supply control device to stop supplying power when it is determined that cooling has ended;
A second power control device control unit that instructs the power control device to start supplying power when a power-on operation is performed on the operation unit;
A device control system comprising: A device control device that is connected to a cooling target device that requires cooling when the power is turned off, and that is connected to a power control device that supplies power to the cooling target device, and controls the cooling target device and the power control device A device control method according to
Connecting the device control device to the power control device to receive power supply from the power control device;
Accepts power-on and power-off operations on the operation unit,
When a power-off operation is performed on the operation unit, the cooling target device is allowed to perform cooling,
When it is determined that the cooling has ended, the power supply control device is instructed to stop supplying power,
A device control method characterized by instructing the power supply control device to start supplying power when a power-on operation is performed on the operation unit.

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