JPH04132397A - Wireless remote control hot water feeding device - Google Patents

Abstract

PURPOSE:To prolong the service life of the battery of the power source of a remote controller, and to improve an operation convenience by preliminarily matching the turning-on/off of the power source at the receiving part of the remote controller with the transmission timing of a hot water feeding device main body between the remote controller and the hot water feeding device. CONSTITUTION:The receiving part 9 of a remote controller 1 demodulates a received radio wave, then checks address information or a check code, and transmits monitor information to a display part at the time of the absence of abnormality. A time part 11 is activated according to the transmission starting timing signal of a hot water feeding device main body 4, and generates a timing signal at the interval of a constant time. Then, a power source controlling part 12 turns-on the power source of the receiving part 9 by the timing signal of the timer part 11, and turns-off the power source after judging the absence of a received signal. Therefore, the transmission of a communication packet can be operated without adding a synchronizing code which is longer than the stopping time of the receiving part 9, and the power source of the receiving part 9 can be turned-on as needed. Thus, the power of the remote controller 1 can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wireless remote control water heater that transmits and receives various information between a water heater main body and a remote control controller by wireless communication.

BACKGROUND OF THE INVENTION In recent years, remote-controlled water heaters that transmit and receive various information between the water heater itself and a remote controller have become widespread, and there is a demand for improved usability.

Conventionally, this type of remote control water heater has generally had a configuration as shown in FIG. The configuration will be explained below.

As shown in the figure, the water heater main body 17 and the plurality of remote control controllers 18 are connected to each other via a two-wire power cable, and power to the remote control controllers 18 is supplied from the water heater main body 17. Monitor information from the water heater main body 17 and operation information from the remote control controller 18 are transmitted by the communication section 19 of the water heater main body 17 and the communication section 20 of the remote control controller 18.
Address information was added to the communication packet, and by superimposing the message on the power cable, it was sent and received between the remote control controller 18 and the water heater main body 17.

Problems to be Solved by the Invention In such a conventional remote control water heater, when communication between the remote controller I8 and the water heater body 17 is changed from wired to wireless, power is no longer supplied to the remote controller 18. , each with an individual power supply.

Therefore, when the remote control controller 18 is battery-powered, it is necessary to keep the receiving section, which consumes the most power, energized at all times in asynchronous wireless communication, but since the battery capacity is not large enough, the battery life is shortened. Therefore, there was a problem in that the battery had to be replaced frequently.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to extend the battery life of the power source of a remote control controller and improve usability.

Means for Solving the Problems In order to achieve the above object, the present invention comprises a water heater main body and a plurality of remote controllers that transmit and receive monitor information, operation information, etc. by wireless communication, and the water heater main body is operated for a certain period of time. The remote control controller includes a timing generator that generates a transmission start timing signal at regular intervals, and the remote control controller includes a timer unit that is activated in accordance with the transmission start timing signal of the water heater body and generates a timing signal at fixed time intervals, and a power source for the receiver. The first problem solved is that the power control section turns on the power to the receiving section according to the timing signal from the timer section, and turns off the power when it determines that there is no received signal. It is used as a means.

Further, the remote control controller includes a power control section that turns on and off the power of the receiving section, and the water heater main body is started up in accordance with the power on of the power control section, and a timing generation section that generates a transmission start timing signal at fixed time intervals. A second means for solving the problem is that the power supply control section turns on the power to the reception section at regular time intervals, and turns off the power when it is determined that there is no received signal.

Effect of the present invention By using the first problem solving means described above, it is possible to turn on the power to the receiving section of the remote control controller in synchronization with the transmission start timing signal from the main body of the water heater. Further, according to the second problem solving means, it is possible to generate a transmission start timing signal for the water heater main body in synchronization with power-on of the receiving section of the remote controller. Therefore, when the power supply of the receiving section of the remote control controller is driven intermittently, the preamble signal for synchronization detection, which had to be provided for longer than the stopping time of the receiving section, can be shorter than the stopping time, which improves communication efficiency. This makes it possible to perform intermittent reception operations with long downtimes, which was not possible in the above, and significantly reduces the power consumption of the remote controller.

Example Hereinafter, one embodiment of the present invention will be described based on FIG.

As shown in the figure, the operation section 2 of the remote control controller 1 is operated by the user.When a key operation is performed on the operation section 2, the transmitting section 3 adds address information of the destination and the destination. It generates communication packets containing operation information, converts them into radio waves, and emits them into space from an antenna. The receiving section 5 of the water heater main body 4 is always powered on, and after demodulating the received wireless power, checks the address information and check code, and sends it to the main body control section 6 if there is no abnormality. Main body control section 6
The above monitor information is generated into a communication packet with address information added by the transmitting unit 7 of the water heater main body 4, and transmission is started in synchronization with a transmission start timing signal generated from the timing generating unit 8 at fixed time intervals. . After demodulating the received radio waves, the receiving section 9 of the remote controller 1 checks the address information and check code, and sends monitor information to the display section 10 if there is no abnormality. The timer section 11 is activated in accordance with the transmission start timing signal from the water heater main body 4, and generates a timing signal at regular time intervals.

The power supply control section 12 turns on the power of the receiving section 7 according to the timing signal of the timer section 11, and turns off the power when it determines that there is no received signal. Note that a plurality of remote controllers 1 having the same configuration are used.

The operation of the above configuration will be explained with reference to FIGS. 2(a) to 2(d). When the remote control controller 1 is turned on,
First, a communication packet A requesting a transmission start timing signal as shown in FIG. 2(C) is transmitted. The receiving section 9 receives the second [
Until the transmission start timing information packet B such as ff1(b) is received from the water heater main body 4, electricity is supplied as shown in FIG. 2(d). Upon receiving the transmission start timing information packet B, the timer section 11 starts up for a time TZJ that is slightly shorter than the period T of the communication start timing signal minus the time T1 of the transmission start timing information packet B, and starts the water heater main body. 4 transmission start timing period T,
A timing signal is generated at the same period as the Power control unit 1
'2 turns on the power of the receiving section 9 upon receiving the timing signal from the timer section 11, and turns off the power when determining that there is no signal received by the receiving section 7. Further, a transmission start timing information packet is periodically issued from the water heater main body 4, and the timer section +1 is set again to correct the error of each timer section.

As described above, according to the wireless remote control water heater of the embodiment of the present invention, the receiving section 9 of the remote control controller 1 can be operated in accordance with the transmission timing signal of the water heater main body 4, and therefore the stop time of the receiving section 9 can be reduced. In addition to being able to send communication packets without adding long synchronization codes,
Since the receiver 9 can be powered on only when necessary, the power consumption of the remote controller 1 can be reduced.

Next, another embodiment of the present invention will be described based on FIG. Components having the same configuration as those of the above embodiment are given the same reference numerals and explanations thereof will be omitted.

As shown in the figure, the power supply control section 14 of the remote control controller 13
The receiver 9 is powered on at regular time intervals and turned off when it is determined that there is no received signal. Further, the timing generator 16 of the water heater main body 15 is activated in accordance with the power-on of the power supply controller 14, and sends a transmission start timing signal to the transmitter 7 at regular time intervals.

In the above configuration, the operation will be explained with reference to FIGS. 4(a) to 4(d). When the remote control controller 13 is turned on, first, the timing of the power source of the receiving unit 9 as shown in FIG. Send information packet C. This timing information packet C is transmitted so that the transmission end timing coincides with the power source timing of the receiving section 9 of the remote control controller 13, and at the transmission end timing, the power source of the receiving section 9 is turned on as shown in FIG. 4(a). When it determines that there is no received signal, it turns off the power. Then, the receiver 9 is powered on at intervals of a certain time T. On the other hand, the receiving section 5 of the water heater main body 15 receives the timing information packet C and immediately starts the timer of the timing generating section 16, as shown in FIG. 4 CC).
A transmission start timing signal is generated at the same timing as the power-on timing of the remote control controller 13. In synchronization with this transmission start timing, a communication packet is transmitted from the transmitter 7 of the water heater main body 15 as shown in FIG. 4(a). Note that when there are a plurality of remote control controllers 13, the timing generating section 16 has a plurality of timers so as to issue different transmission start timing signals to each remote control controller.

As described above, according to the wireless remote control water heater of the embodiment of the present invention, the transmission start timing signal of the water heater main body 15 can be generated in accordance with the power-on timing of the receiving section 9 of the remote control controller 13, and the synchronization detection can be performed. The stop time of the receiving section 9 can be extended without attaching a long synchronization code, and the power consumption of the remote controller 13 can be reduced.

Effects of the Invention As is clear from the above embodiments, according to the present invention, there is a problem between the remote control controller and the main body of the water heater. Since the timing is synchronized, even if intermittent operation with a long stop time is set in the receiving section of the remote controller, there is no need to attach a synchronization bit for a long time and send it from the water heater itself, resulting in a power saving ratio of the remote controller. This improves usability and enables efficient transmission.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a wireless remote control water heater according to an embodiment of the present invention, FIGS. 2 (a) to (d) are operational timing diagrams of the wireless remote control water heater, and FIG. 3 is a block diagram of another embodiment of the present invention. Block diagram of the example wireless remote control water heater, No. 41]Caj~(dl is an operation timing diagram of the wireless remote control water heater, and Fig. 5 is a system diagram of the conventional remote control water heater. Remote controller, 4...Water heater body, 8...Timing generator, 9...
・Receiving section, 11... Timer section, 12...
...Power control unit.

Claims (2)

[Claims] (1) The water heater body includes a water heater body that transmits and receives monitor information, operation information, etc. through wireless communication, and a plurality of remote controllers, and the water heater body includes a timing generator that generates a transmission start timing signal at regular time intervals; The remote control controller includes a receiving section that receives a signal from the water heater main body, a timer section that starts in accordance with a transmission start timing signal of the water heater main body and generates a timing signal at fixed time intervals, and a timer section that generates a timing signal at regular time intervals. a power supply control section that turns on and off the power, the power supply control section turning on the power of the receiving section according to a timing signal from the timer section, and turning off the power when determining that there is no received signal. Device. (2) The water heater is composed of a main body of the water heater that transmits and receives monitor information, operation information, etc. by wireless communication, and a plurality of remote controllers, and the remote controller is equipped with a power control section that turns on and off the power of the receiving section, and the water heater The main body includes a timing generation section that starts up when the power supply control section is turned on and generates a transmission start timing signal at regular time intervals, and the power supply control section turns on the power supply of the reception section at regular time intervals and starts reception. A wireless remote control water heater that turns off the power when it determines that there is no signal.