JPH0722427B2 - Failure display device for remotely controllable equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a failure display device in a remotely controllable device, and is applied to remote control of a domestic boiler, a water heater, and the like.

(B) Conventional Technology As described in Japanese Patent Laid-Open No. 59-104894, the conventional remote control has one remote control unit and is provided with a plurality of remote control units. No fault was displayed when the remote control unit failed.

(C) Problems to be Solved by the Invention In view of the above points, the present invention provides a plurality of remote control units, and an indicator provided in the main remote control unit when any one of the remote control units fails. The purpose is also to clearly display that effect so that the failure can be quickly resolved.

(D) Means for Solving the Problems In the present invention, a main control unit for controlling a device and a main remote unit that is connected in parallel with the main control unit via a signal transmission common line to remotely control the device. The main remote control unit is composed of a control unit and a plurality of remote control units, and the main remote control unit always has a first display for digitally displaying temperature and the like, and a plurality of second display units for displaying a setting state as a pattern at all times. Means for transmitting and receiving a signal between the main control unit and a plurality of remote control units via the common line; and an error of the remote control unit when a signal is given to the remote control unit and a response to the signal is not obtained. The failure detecting means for detecting, and when the failure is detected by the detecting means, the first display unit is controlled so as to display the fact, and the remote control section in which the abnormality is detected has a one-to-one correspondence. A failure display means for operating the second indicator. It is a configuration.

(E) Action When the remote control unit (4B) is addressed and a signal responding to it is not received within a predetermined time, the remote control unit (4B) is output to that effect to the control circuit (26A). hand,
The hot water temperature indicator (20) displays "E3" indicating that the remote control unit (4B) is abnormal, instead of the hot water temperature, and the "shower, etc." display unit (22) that constantly displays the temperature setting state as a picture Is displayed and the abnormality of the remote control section (4B) can be clearly identified without using a dedicated display.

(F) Embodiment One embodiment of the present invention will be described below with reference to the drawings. (1) is a main body of the water heater, (2) is a main control unit that controls the main body of the water heater (1), and a main remote control unit (4A) to the main control unit (2) via a signal transmission common line (3). ) And remote controller (4B) (4C)
Are connected in parallel. (5) is a heat source control unit, which directly controls a heat source such as a burner of the main body (1), and is a fuel supply pump, a solenoid valve, a proportional valve, and a drive unit thereof. (6)
Is for controlling the heat source control unit (5), and a microcomputer (hereinafter referred to as a microcomputer) is involved in this. Reference numeral (7) is a hot water temperature detecting unit for detecting the hot water temperature of the main body (1), which includes a thermistor (8), a dividing resistor (9), a reference voltage (10), an operational amplifier (11) and a proportional gain adjusting resistor (12). ) Etc.

Reference numeral (13) is a transmission / reception interface unit for transmitting / receiving data to / from the main remote control unit (4A), which is usually a microcomputer. The main remote control unit (4A) is attached to, for example, the wall surface of the kitchen, the remote control unit (4B) is attached to a predetermined wall surface of the bathroom, and (4C) is attached to a predetermined wall surface of the bathroom on the second floor, and the common line ( 3) is buried in the wall. The main remote control unit (4A) and the remote control units (4B) (4C) are provided with switches such as an operation switch (14), a hot water temperature switching switch (15), and a hot water temperature fine adjustment switch (16). Monitors such as a two-digit digital water temperature indicator (first indicator) (20) consisting of a lamp (17), a priority lamp (18), a combustion lamp (19) and a 7-segment LED element, Display part (21) (22) (23) (24) as the second display that displays the effect of "lubrication", "shears etc.", "slightly hot", "hot" etc.
And so on.

(25A) is a main remote control section (4A) that transmits and receives to and from the transmission / reception interface section (13) of the main control section (2) and the transmission / reception interface sections (25B) (25C) of the remote control sections (4B) (4C). It is a transmission / reception interface unit of. (26A) is a control circuit for transmitting and receiving operation inputs of switches such as the operation switch (14) and the like to a transmitting / receiving interface section (25A).
It sends to each remote control part (4B) (4C) and the main control part (2) via the, or receives the detection output from the hot water temperature detection part (7) of the main control part (2), and the hot water temperature display part ( 20), or the control of displaying on a monitor in response to the output from the operation of the switches, specifically, a microcomputer or the like.

Although the number of remote control units is two in this embodiment, the number of remote control units is not limited to this, and various variations can be considered.

The operation will be described below with the above configuration. First, when the operation switch (14) of the main remote control unit (4A) is pressed and closed, the control circuit (26A) receives the output and turns on the operation lamp (17), and also the transmission / reception interface unit (25A) of its own. The signal is output to the transmission / reception interface unit (13) of the main control unit (2) and the transmission / reception interface unit (25B) (25C) of the remote control units (4B) (4C) via the communication unit. Then, the microcomputer (6) controls the heat source controller (5) to start combustion by the burner of the water heater main body (1). Next, press the hot water temperature switch (15) to close it,
The control circuit (26A) turns on the display part (21) indicating "lubrication", and the set temperature becomes 39 ° C. Further, when the hot water temperature changeover switch (15) is closed by pressing, the display part (22) indicating "shower etc." lights up and is set to 42 ° C, and the right side display is sequentially displayed every time the changeover switch (15) is pressed. The section will light up. Then, after the display part (24) indicating “hot” having the set temperature of 76 ° C., the display is returned to the original state and the display part (21) indicating “lubrication” is turned on. When the temperature is set in this way, the set temperature output is input to the microcomputer (6) via the control circuit (26A) and the transmission / reception interface section (25A) (13), while the water heater body (1) The detection output of the hot water temperature detection unit (7) is also input to the microcomputer (6), and the microcomputer (6) compares both outputs and controls the heat source control unit (5) based on the comparison output. The combustion of the water heater main body (1) is controlled by. The detection output of the hot water temperature detection unit (7) is sent to the control circuit (26A) via the transmission / reception interface unit (13) (25A), and the hot water temperature indicator (20) displays the hot water temperature. It is a thing.

Next, the transmission method by the time division (polling / selecting method) of each data between the main control unit (2), the main remote control unit (4A) and the remote control units (4B) and (4C) performed in this way is described below. Describe.

First, as shown in FIG. 3, the main remote control unit (4A) sends a message to the main control unit (2) and the remote control units (4B) and (4C) "Please send from the main control unit (2)." The main control unit (2) is addressed by outputting a specific code, and the main control unit (2) is addressed.
The main remote control unit (4A) receives a signal in response to this. Next, the remote control unit (4B) is addressed by outputting a specific code to the main control unit (2) and remote control units (4B) and (4C) to the effect that "Please send from the remote control unit (4B)." Then
The main remote control unit (4A) receives a signal in response to this from the remote control unit (4B). Next is the remote control unit (4C) as well.
Address and receives a signal in response to this from the control unit (4C). In this way, the main remote control unit (4A) receives data such as the combustion state and the detected hot water temperature from the main control unit (2) and sends the data to the remote control units (4B) (4C). Each lamp (17) (18) (19) and each display (21) (22) (2
3) While controlling the (24) and the display (20), the main control section (receives the operation state of the operation switch (14) and the set water temperature data from the remote control sections (4B) and (4C). It will be sent to 2). Of course, the data operated and set in the main remote control unit (4A) also includes data that is operated and set in the main control unit (2)
B) (4C).

Next, based on the flow chart shown in FIG. 4, a case where the main control unit (2) and the remote control units (4B) and (4C) have failed will be described. First, from the main remote control unit (4A) to the main control unit (2)
When a signal from the main control section (2) responding to this is not received within a predetermined time, the fact is output to the control circuit (26A), and the hot water temperature indicator (20)
Replaces the hot water temperature, the main control unit (2) displays "E2" indicating that it is abnormal, and the display unit (21) indicating that "lubricate" is turned on, causing the user to malfunction the main control unit (2). You can inform that you did. Next, the remote control unit (4B) is addressed, and if there is an abnormality, "E" indicating that the remote control unit (4B) is abnormal is displayed.
“3” is displayed and the “Shower etc.” display section (22) is turned on. If the remote control unit (4C) fails, "E4" is also displayed and "Slightly hot" display unit (2
3) is turned on.

In this way, by displaying an error code instead of the hot water temperature on the hot water temperature indicator (20), it is possible to notify that there is a failure at a specific location, and at the same time, the respective display parts (21) (22) (23)
When (24) is also turned on, its original meaning is displayed, and in addition to that, a given meaning is displayed to indicate a failure.

(G) Effect of the Invention As described above, according to the present invention, when any one of the plurality of remote control units is abnormal, the main remote control unit is always digitally displayed without providing a dedicated display unit. By using the first display and a plurality of second displays that constantly display the setting state, it is possible to clearly identify the abnormality of the remote control and which remote control has the abnormality. Therefore, it is easy for the user to understand the abnormality, and the repair can be performed quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing the system of the present invention, and FIG.
FIG. 4 is an external view of the main remote controller, FIG. 3 is a diagram for explaining data transmission by time division, and FIG. 4 is a diagram showing a flow chart. (1) …… Main body of water heater, (2) …… Main control unit, (3)…
… Signal transmission common line, (4A) …… Main remote control unit, (4B)
(4C) …… Remote control unit, (13) (25A) (25B) (25C)
...... Transmit / receive interface section, (20) …… Hot water temperature indicator (first indicator), (21) (22) (23) (24) …… Display section (second indicator), (26A) ( 26B) (26C) …… Control circuit.

Claims (1)

[Claims] 1. A main control unit for controlling a device, a main remote control unit and a plurality of remote control units which are connected in parallel to the main control unit via a signal transmission common line and remotely control the device. In the main remote control unit, a first display unit that constantly digitally displays the temperature and the like, a plurality of second display units that normally display a pattern of the setting state, the main control unit and a plurality of remote control units are provided. Means for transmitting and receiving a signal via the common line between them, failure detecting means for giving a signal to the remote control section and detecting an abnormality of the remote control section when no response to the signal is obtained, and the detecting means. When a failure is detected by the, the failure display means for controlling to display the fact on the first display, and for operating the second display corresponding to the remote control section where the abnormality is detected in a one-to-one manner. Remotely controllable, characterized by having Vessel of the failure display device.