JP5690547B2 - Remote control device - Google Patents

Description

  The present invention relates to a wired remote control device.

  As a wired remote control device attached to electrical equipment such as air conditioners and water heaters, it operates with the direct current voltage sent from the equipment body via the transmission line, and the minute voltage fluctuation superimposed on the direct current voltage Is known as a transmission signal from the device main body (for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2009-100409

  In the wired remote control device described above, the DC voltage on the transmission line between the device main body and the current consumption increases or decreases due to the blinking display driving of the display pattern in the liquid crystal display unit or the blinking display driving of the light emitting diode for displaying the operation state. The fluctuation may occur, and the fluctuation may adversely affect the acquisition of the transmission signal from the device main body.

  An object of the present invention is to provide a highly reliable remote control device and electrical equipment that do not give unnecessary fluctuations to the DC voltage on the transmission line and that can accurately capture the transmission signal from the equipment body. It is to be.

The remote control device according to the embodiment of the present invention takes in a minute voltage fluctuation superimposed on the DC voltage as a transmission signal from the device main body while operating with the DC voltage sent from the device main body via a transmission line. The first and second display means, and the control means for limiting the increase / decrease width of the current consumption associated with the blinking display to less than a predetermined value when the first display means blinks and the second display means blinks. And comprising. The control means repeats lighting and extinguishing of the first display means at a cycle T1 during the blinking display of the first display means and the blinking display of the second display means, and the second display means performs the first display in the cycle T1. Each blinking display is controlled so as to repeat the start of lighting in accordance with the start of lighting of the display means and the start of turning off in accordance with the completion of turning off of the first display means in the cycle T1.

The figure which shows the whole structure of the air conditioner in connection with each embodiment. The figure which shows the liquid crystal display part of each embodiment, and the light emitting diode for a driving | running state display. The figure which shows the control circuit of 1st thru | or 3rd embodiment. The figure which shows the control of 1st Embodiment, and the change of DC voltage. The figure which shows the change of DC voltage when there is no control of 1st Embodiment as a reference. The figure which shows the control of 2nd Embodiment, and the change of a DC voltage. The figure which shows the control of 3rd Embodiment, and the change of DC voltage. The figure which shows the control circuit of 4th Embodiment. The figure which shows the control of 4th Embodiment, and the change of DC voltage. The figure which shows the control of 5th Embodiment, and the change of a DC voltage. The figure which shows the control of 6th Embodiment, and the change of a DC voltage.

[1] Hereinafter, a first embodiment will be described with reference to the drawings.
As shown in FIG. 1, a pair of transmission lines 2 are led out from a main body 1 of an electronic device such as an air conditioner, and a plurality of wired remote control devices 10 are connected to the transmission lines 2. These remote control devices 10 operate with the DC voltage Va transmitted from the main body 1 through the transmission line 2, and take in a minute voltage fluctuation superimposed on the DC voltage Va as a transmission signal from the main body. It has a function of executing an information transmission function to the main body 1 by opening and closing between the transmission lines 2 at a predetermined interrupt timing. One of the plurality of remote controls 10 is set as a master unit and the rest is set as a slave unit by an operation of a worker at the time of installation.

  Further, as shown in FIG. 2, each remote control device 10 has a liquid crystal display unit 11 that displays a set operation mode, a set room temperature, a set air volume, etc. as characters or images as a first display means, A light emitting diode (LED) 12 for operating state display that is turned on when the operation is turned on and turned off when the operation is turned off is provided as the second display means, and an operation unit 13 for setting the operation mode, the room temperature, the air volume, and the like is provided. Have. The liquid crystal display unit 11 is also provided with an abnormality display pattern 11a for notifying the occurrence of an abnormality in the main body 1 with characters and codes. When an actual abnormality occurs, the abnormality display pattern 11a blinks and the light emitting diode 12 blinks as shown in the figure.

A control circuit of the remote control device 10 is shown in FIG.
An input / output circuit 21 is connected between the transmission lines 2. The input / output circuit 21 includes terminals P1 and P2 connected to the transmission line 2, terminals N1 and N2 connected to a transmission / reception unit 22 described later, and a diode bridge connected between these terminals. However, regardless of whether the terminals P1 and P2 are connected in a positive or negative state, the terminal N1 always outputs a DC voltage Va from which the terminal N1 is positive and the terminal N2 is negative.

  A stabilized power supply circuit 23 is connected to the terminals N 1 and N 2 of the input / output circuit 21 via the transmission / reception unit 22. The transmission / reception unit 22 supplies a direct current voltage Va input from the input / output circuit 21 to the stabilized power supply circuit 23 as it is, and a minute voltage fluctuation superimposed on the direct current voltage Va input from the input / output circuit 21. Means for extracting and supplying to the MCU 30 to be described later, and means for transmitting information supplied from the MCU 30 to the main body 1 by opening and closing between the transmission lines 2.

  The stabilized power supply circuit 23 converts the DC voltage supplied from the input / output circuit 21 into a stable DC voltage Vd having a level suitable for the operation of the remote control device 10 and outputs it.

  On the other hand, the liquid crystal drive circuit 31, the operation unit 13, the room temperature sensor 32, and the base of the NPN transistor 25 are connected to the MCU 30 which is a control unit of the remote control device 10. The positive terminal of the light emitting diode 12 is connected to the positive terminal N1 of the input / output circuit 21 via the resistor 24, and the negative terminal of the light emitting diode 12 is grounded between the collector and emitter of the transistor 25. The

  The liquid crystal drive circuit 31 displays information supplied from the MCU 30 on the liquid crystal display unit 11. The room temperature sensor 32 detects the room temperature of the place where the remote control device 10 is placed and inputs the detected temperature to the MCU 30.

Then, the MCU 30 has the following means (1) to (5) as main functions.
(1) A means for generating a control clock signal when the operation starts.

  (2) Means for capturing a minute voltage fluctuation extracted by the transmission / reception unit 22 as a transmission signal from the main body 1.

  (3) Monitoring the above acquisition, and when information is acquired, executes processing based on the acquisition information, and also detects temperature information detected by the indoor temperature sensor 32 and an operation unit at a predetermined interrupt timing based on the count of the clock signal. Main processing means for transmitting setting information by operation 13 to the main body 1 via the transmission / reception unit 22.

  (4) Display control means for displaying the abnormal display pattern 11a of the liquid crystal display unit 11 in a blinking manner and displaying the light emitting diode 12 in a blinking manner when the captured transmission signal indicates some abnormality.

  (5) Control means for keeping the increase / decrease in current consumption associated with the blinking display below a predetermined level when the display control means blinks the abnormal display pattern 11a and the light emitting diode 12 blinks. Specifically, when the flashing display of the liquid crystal display unit 11 and the flashing display of the light emitting diode 12 are performed, the abnormal display pattern 11a of the liquid crystal display unit 11 is repeatedly turned on and off at the cycle T1, and the light emitting diode 12 displays the abnormal display at the cycle T1. Each blinking display is controlled so as to repeat the start of lighting in accordance with the start of lighting of the pattern 11a and the start of turning off in accordance with the completion of turning off the abnormal display pattern 11a in the cycle T1.

  Next, the control of the MCU 30 at the time of abnormality display and the change in the DC voltage Va accompanying the control will be described with reference to FIG. In addition, although the change of the DC voltage Va is shown in steps, it is actually a smooth change.

  The blinking display of the abnormal display pattern 11a on the liquid crystal display unit 11 is a process of turning on the access to the liquid crystal drive circuit 31 to turn on the abnormal display pattern 11a and the access to the liquid crystal drive circuit 31 to turn off the abnormal display pattern 11a. It is a repetition of the process to turn on. Thus, the abnormal display pattern 11a is repeatedly turned on and off at the cycle T1.

  The blinking display of the light emitting diode 12 is a repetition of a process of turning on the transistor 25 to turn on the light emitting diode 12 and a process of turning off the transistor 25 to turn off the light emitting diode 12. In this way, the light emitting diode 12 starts lighting in accordance with the lighting start of the abnormal display pattern 11a in the cycle T1 (access on to the liquid crystal driving circuit 31 at the time of lighting) and completes extinguishing of the abnormal display pattern 11a in the cycle T1 (when the light is turned off). The turning-off start corresponding to the access off to the liquid crystal driving circuit 31 is repeated. This repetition period T2 is the same period as the period T1.

  The normal main process is turned off when the access to the liquid crystal drive circuit 31 for turning on / off the abnormal display pattern 11a is turned on, and the main process is turned on when the access to the liquid crystal drive circuit 31 is turned off.

  When the access to the liquid crystal drive circuit 31 is turned on, a current is consumed, but the consumed current is smaller than the amount of current that becomes unnecessary when the main process is turned off. At this time, the difference between the current consumed when the access is turned on and the current unnecessary when the main process is turned off is not much different from the current consumed when the light emitting diode 12 is turned on.

  Therefore, even if the light emitting diode 12 starts to light in accordance with the start of lighting of the abnormal display pattern 11a, the increase / decrease in current consumption at that time is sufficiently less than a predetermined value, and unnecessary fluctuations in the DC voltage Va on the transmission line 2 occur. Don't give.

  The light emitting diode 12 maintains the lighting state after the access on to the liquid crystal driving circuit 31 for lighting the abnormal display pattern 11a is finished. At this time, the main process is turned on, so that the current consumption increases. The increase is less than a predetermined amount. At this time, the DC voltage Va on the transmission line 2 decreases by ΔV1, but the decrease is smaller than the threshold for extracting the transmission signal and does not affect the extraction of the transmission signal.

  When the access to the liquid crystal driving circuit 31 for turning off the abnormal display pattern 11a is turned on in the cycle T1, the light emitting diode 12 is kept in the lighting state. The increase / decrease is well below the predetermined level. Therefore, the DC voltage Va on the transmission line 2 is not unnecessarily changed.

  When the light emitting diode 12 is turned off in accordance with the access-off of the liquid crystal drive circuit 31 when the abnormal display pattern 11a is turned off, the current consumption is only the main process, and the current consumption changes in a decreasing direction. Falls below a predetermined value, and the decrease ΔV1 of the DC voltage Va in the transmission line 2 is eliminated.

  As described above, even if the blinking display of the abnormal display pattern 11a and the blinking display of the light emitting diode 12 are performed, the DC voltage Va on the transmission line 2 is not changed unnecessarily, and therefore the transmission signal from the main body 1 is not transmitted. Can be captured accurately.

  Note that FIG. 5 shows an example in which the increase or decrease in current consumption due to the blinking display does not fall below a predetermined value. That is, the light emitting diode 12 repeats the lighting start in accordance with the completion of lighting of the abnormal display pattern 11a in the cycle T1 and the lighting start in accordance with the completion of turning off of the abnormal display pattern 11a in the cycle T1.

  In this case, the current is consumed by turning on the access to the liquid crystal drive circuit 31 when the abnormal display pattern 11a is turned on, but the consumed current is smaller than the current that becomes unnecessary when the main processing is turned off. small. At this time, since the light emitting diode 12 is in the extinguished state, the current consumption decreases, but the decrease is less than a predetermined amount. Accompanying this decrease, the direct-current voltage Va on the transmission line 2 increases by ΔV1, but the increase ΔV1 is smaller than the threshold value for extracting the transmission signal and does not affect the extraction of the transmission signal.

  However, when the light emitting diode 12 is turned on in accordance with the completion of lighting of the abnormality display pattern 11a, the current consumption of the main process is added to the lighted portion, so that the current consumption changes in an increasing direction. At this time, the decrease of the DC voltage Va becomes ΔV2, which is twice as large as ΔV1, and the fluctuation is large, and the decrease ΔV2 is larger than the threshold value for extracting the transmission signal. Since this decrease ΔV2 is mistakenly taken as a transmission signal, extraction of the transmission signal is affected.

  In the case of the first embodiment, such a problem does not occur.

[2] Second embodiment
In the second embodiment, among the main functions of the MCU 30, the means (5) differs as follows.
(5) Control means for keeping the increase / decrease in the current consumption associated with the blinking display below a predetermined value when the blinking display of the abnormality display pattern 11a and the blinking display of the light emitting diode 12 are performed. Specifically, when the flashing display of the liquid crystal display unit 11 and the flashing display of the light emitting diode 12 are performed, the abnormal display pattern 11a of the liquid crystal display unit 11 is repeatedly turned on and off at the cycle T1, and the light emitting diode 12 displays the abnormal display at the cycle T1. The start of lighting and the start of turning off while the access to the liquid crystal driving circuit 31 of the pattern 11a is turned off are repeated.

  Other configurations are the same as those of the first embodiment. Therefore, the description is omitted.

  That is, as shown in FIG. 6, when the abnormal display pattern 11a is lit, current is consumed by accessing the liquid crystal drive circuit 31, and the consumed current is obtained by turning off the main process. Small compared to unnecessary current. At this time, since the light emitting diode 12 is in the extinguished state, the current consumption decreases, but the decrease is less than a predetermined amount. Along with this decrease, ΔV1 increases in the DC voltage Va on the transmission line 2, but the increase ΔV1 is smaller than the threshold value for extracting the transmission signal and does not affect the extraction of the transmission signal.

  Since the light emitting diode 12 is in the off state when the access to the liquid crystal driving circuit 31 is turned off when the subsequent abnormal display pattern 11a is turned on, the current is consumed only in the main processing, and the current consumption changes in an increasing direction and the DC voltage is increased. Although Va decreases, the decrease is ΔV1 which is smaller than the threshold for extracting the transmission signal, and does not affect the extraction of the transmission signal.

  When the light emitting diode 12 is turned on while the access to the liquid crystal driving circuit 31 of the abnormal display pattern 11a is turned off, the current consumption changes in the increasing direction and the DC voltage Va decreases, but the decrease is due to the extraction of the transmission signal. ΔV1 which is smaller than the threshold value for the transmission signal, and does not affect the extraction of the transmission signal.

  The light emitting diode 12 is turned off while the access to the liquid crystal drive circuit 31 is turned off after completion of turning off of the subsequent abnormal display pattern 11a, the current consumption changes in a decreasing direction, and the DC voltage Va increases. ΔV1 which is smaller than the threshold value for extracting the transmission signal, and does not affect the extraction of the transmission signal.

  As described above, even if the blinking display of the abnormality display pattern 11a and the blinking display of the light emitting diode 12 are performed, the DC voltage Va on the transmission line 2 is not changed unnecessarily, and thus the transmission signal from the main body 1 is accurately obtained. Can be included.

[3] Third embodiment
This third embodiment is a modification of the second embodiment, and the light emitting diode 12 lighting and extinguishing period T2 is not the same as the period T1, but merely different as shown in FIG. .

  Other configurations, operations, and effects are the same as those of the second embodiment.

[4] Fourth embodiment
As shown in FIG. 8, one end of a current consumption resistor 41 is connected to the positive output terminal of the stabilized power supply circuit 23, and the other end of the resistor 41 is grounded via the collector and emitter of an NPN transistor 42. Is done. The base of the transistor 42 is connected to the MCU 30. The resistor 41 and the transistor 42 constitute current consumption means for forcibly consuming current.

With the adoption of the current consumption means, the means (5) among the main functions of the MCU 30 differs as follows.
(5) Control means for keeping the increase / decrease in the current consumption associated with the blinking display below a predetermined value when the blinking display of the abnormality display pattern 11a and the blinking display of the light emitting diode 12 are performed. Specifically, when the flashing display of the liquid crystal display unit 11 and the flashing display of the light emitting diode 12 are performed, the abnormal display pattern 11a of the liquid crystal display unit 11 is repeatedly turned on and off at the cycle T1, and the light emitting diode 12 displays the abnormal display at the cycle T1. Each blinking display is controlled so as to repeat the start of lighting in accordance with the completion of lighting of the pattern 11a and the start of turning off in accordance with the completion of turning off of the abnormal display pattern 11a in the cycle T1, and the above-mentioned at the start of turning on / off of the abnormal display pattern 11a. The transistor 42 is turned on to turn on the function of the current consumption means.

  Other configurations are the same as those of the first embodiment. Therefore, the description is omitted.

  That is, as shown in FIG. 9, the light emitting diode 12 repeats the start of lighting in accordance with the completion of lighting of the abnormal display pattern 11a in the cycle T1, and the start of turning off in accordance with the completion of turning off of the abnormal display pattern 11a in the cycle T1.

  In this case, the current is consumed by turning on the access to the liquid crystal drive circuit 31 when the abnormal display pattern 11a is turned on, but the consumed current is smaller than the current that becomes unnecessary when the main processing is turned off. small. At this time, since the light emitting diode 12 is turned off, the current consumption changes in a decreasing direction. However, the transistor 42 is turned on and a current flows through the resistor 41 so that the decrease is eliminated. This forcible current consumption does not give unnecessary fluctuation to the DC voltage Va on the transmission line 2.

  When the light emitting diode 12 is turned on in accordance with the completion of lighting of the subsequent abnormality display pattern 11a, the current consumption of the main process is added to the lighted portion, so that the current consumption changes in an increasing direction. Along with this, the DC voltage Va decreases, but the decrease is ΔV which is smaller than the threshold for extracting the transmission signal, and does not affect the extraction of the transmission signal.

[5] Fifth embodiment
In the fifth embodiment, among the main functions of the MCU 30, the means (5) differs as follows.
(5) Control means for making the timing of the blinking display different from the timing of the blinking display in another remote control device when the blinking display of the abnormality display pattern 11a and the blinking display of the light emitting diode 12 are performed.

  Other configurations are the same as those in any of the first to fourth embodiments.

  The operation will be described with reference to FIG. In FIG. 10, only the light emitting diode 12 is turned on and off, and the abnormality display pattern 11 a is not turned on and off. The timing control of the blinking display of the light emitting diode 12 and the blinking display of the abnormality display pattern 11a is the same as in any of the first to fourth embodiments.

  Among the plurality of remote control devices 10 connected to the main body 1, in the remote control device 10 set as the parent device, the light emitting diode 12 is turned on at a predetermined timing based on the clock signal generated at the start of the operation. Then, the control for repeating the turn-off with the cycle Tx is started.

  In the remote control device 10 set as the remaining slave unit, the light emitting diode 12 is turned on and off at a timing delayed by a predetermined time from the start of the control of the master unit based on the clock signal generated when the operation starts. Control that is repeated at the cycle Ty is started. The period Ty is the same as the period Tx.

  When there are a plurality of slave units, the timing of starting control is gradually shifted between the slave units.

  According to such a configuration, it is possible to avoid a situation in which fluctuations in the DC voltage Va accompanying the flashing display of each remote control device 10 overlap each other and become large. Thereby, in each remote control apparatus 10, the transmission signal from the main body 1 can be taken in correctly.

[6] Sixth embodiment
The sixth embodiment is a modification of the fifth embodiment, and as shown in FIG. 11, the period Ty of the slave unit is different from the period Tx of the master unit.
Other configurations, operations, and effects are the same as those of the fifth embodiment.

[7] In the above embodiment, the air conditioner has been described as an example of the electric device. However, as long as it has a plurality of display units capable of blinking display, the same applies to other electric devices such as a water heater. It can be implemented. The display means is not limited to the liquid crystal display unit 11 and the light emitting diode 12 for displaying the operation state.

  In addition, each said embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, rewrites, and changes can be made without departing from the scope of the invention. In these embodiments and modifications, the scope of the invention is included in the gist, and is included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner main body, 2 ... Transmission line, 10 ... Remote control apparatus, 11 ... Liquid crystal display part, 12 ... Light emitting diode for operation state display, 13 ... Operation part, 21 ... Input / output circuit, 22 ... Transmission / reception part, DESCRIPTION OF SYMBOLS 23 ... Stabilized power supply circuit, 25 ... NPN type transistor, 30 ... MCU (control part), 31 ... Liquid crystal drive circuit, 32 ... Indoor temperature sensor, 41 ... Resistance for current consumption, 42 ... NPN type transistor

Claims (5)

In a remote control device that takes in a minute voltage fluctuation superimposed on the DC voltage as a transmission signal from the main body while operating with a DC voltage sent from the main body of the electrical equipment via the transmission line,
First display means and second display means;
Control means for keeping the increase / decrease in current consumption associated with the blinking display below a predetermined level when the blinking display of the first display means and the blinking display of the second display means;
Equipped with a,
The control means repeats lighting and extinguishing of the first display means at a cycle T1 during the blinking display of the first display means and the blinking display of the second display means, and the second display means displays the first display at the cycle T1. A remote control device characterized by controlling each blinking display so as to repeat the lighting start in accordance with the start of lighting of the means and the start of turning off in accordance with the completion of turning off of the first display means in the cycle T1 . In a remote control device that takes in a minute voltage fluctuation superimposed on the DC voltage as a transmission signal from the main body while operating with a DC voltage sent from the main body of the electrical equipment via the transmission line,
First display means and second display means;
Control means for keeping the increase / decrease in current consumption associated with the blinking display below a predetermined level when the blinking display of the first display means and the blinking display of the second display means;
With
The control means repeats lighting and extinguishing of the first display means at a cycle T1 during the blinking display of the first display means and the blinking display of the second display means, and the second display means displays the first display at the cycle T1. to repeat the off start after turning off the completion of the first display unit in the lighting start and period T1 after the lighting completion means, features and be Brighter remote control device to control the respective blinking.   The control means includes current consuming means for consuming current, and when the blinking display of the first display means and the blinking display of the second display means, the first display means is repeatedly turned on and off at a cycle T1, The display means controls each blinking display so as to repeat the start of lighting in accordance with the completion of lighting of the first display means in the cycle T1 and the start of turning off in accordance with the completion of turning off of the first display means in the period T1. 2. The remote control device according to claim 1, wherein the function of the current consumption means is turned on when the display means is turned on / off. The first display means a liquid crystal display unit, the second display means is a remote control device according to any one of claims 1 to claim 3, characterized in that a light emitting diode for displaying the operation state. A plurality of remote control devices according to any one of claims 1 to 4 , wherein the remote control devices are electric devices having display means and a control unit.
Each said control part makes the timing of the blinking display differ from the timing of the blinking display in another remote control apparatus in the case of the blinking display of a display means.

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