JPS6410240B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a notification device that is applied to a device that automatically performs predetermined steps in sequence, such as a fully automatic washing machine, and that emits a notification sound or the like when the device operates abnormally. .

Conventional abnormality notifications in fully automatic washing machines, for example, include continuously lighting a lamp or
This was generally done by sounding a buzzer only once or continuously.

However, when the unbalance of the fabric occurs and it is impossible to correct it with the washing machine's own functions, the user is not necessarily near the washing machine, and if he is away from the washing machine due to going out etc. , it is not possible to sense the notification from the washing machine, and it is not possible to restore the original function of the washing machine to normal. Therefore, it is not easy to use, and when abnormal conditions are continuously notified by sounding a buzzer, it is perceived as an unpleasant sound by people around the user, and it lacks practicality.

The present invention is intended to solve the above-mentioned problem, and to notify the user at regular intervals when an abnormal state occurs.

An example in which the present invention is applied to a fully automatic washing machine will be described below. In the figure, 1 is a cam part that instructs each process of drainage, dewatering, and rinsing; 2
Contact 3 is a contact that closes only when draining water and also serves as the first memory means A. 4 is a contact that closes only when rinsing. 5, 6, and 7 are resistors, and these are used to detect the process progress state. This constitutes means B.

Now, contact 2 is closed and the output of AND gate 8 is
When V _DD (hereinafter referred to as 1), the output of NOR gate 9 becomes ground level (hereinafter referred to as φ),
A light emitting diode 10 connected to V _DD via a resistor 11 is turned on.

Similarly, if contact 3 is closed, AND gate 1
2 becomes 1, and as a result, the NOR gate 13 becomes φ
As a result, the light emitting diode 14 lights up through the resistor 15.

Also, if contact 4 is closed, AND gate 16
The output of becomes 1, and the output of NOR gate 17 becomes φ
As a result, the light emitting diode 18 is connected through the resistor 19.
lights up. Note that the light emitting diodes 10, 14,
18 is a display means C along with resistors 11, 15, and 19.
Configure. And AND gate 8, 12, 1
6 When all outputs become φ, that is, when all the drainage, dewatering, and rinsing processes are completed, the output of the NOR gate 20 becomes 1, the output of the NOR gate 21 becomes φ, and the output of the NOR gate 20 becomes φ. is applied to the transistor 23 via the inverter 20 and the resistor 24, turning it on, and as a result, the voltage of V _DD is applied to the buzzer 22 constituting the notification means D, causing the buzzer 22 to sound continuously.

However, when contact 3 is closed, dehydration tank 2
When the unbalance switch 26, which is the detection means E for detecting the bias of 5, is closed, the resistance 2
7, one input of the AND gate 28, which is the comparison means F, which was input to φ becomes 1,
Furthermore, since the output of contact 3, which is the other input, is also 1, the output of AND gate 28 rises to 1. Therefore, at the rising edge, the output of the DF/F 29, which is the second storage means G that reads data, becomes 1. Therefore, the output of the NOR gate 30 becomes φ,
All outputs of AND gates 8, 12, 16 are φ
It is prohibited. On the other hand, the output of DF/F29 is
It is input to AND gate 31. Further, the output of the DFF 29 is also input to the OR gate 32, and the OR gate 32 becomes 1.

33 is an unstable multivibrator circuit that oscillates when the input is 1, and the output for which the time of 1 is short and the time of φ is long is input to the AND gate 31.
The AND gate 31 receives the output of a 1/n frequency dividing circuit 35 which receives the output of the oscillator 34 . Therefore, when the contact 3 and the unbalanced switch 26 are turned ON, the output of the AND gate 31 is a 1/n frequency-divided signal of the output of the oscillator 34 at a period determined by the unstable multivibrator circuit 33. 9, 13, 17, and 21, the light emitting diodes 10, 14, and 18 are blinked for a certain period of time, and the buzzer 22 is made to sound intermittently. At this time
Since the output of NOR gate 30 is φ, resistor 37
The transistor 38 is turned on via the zener diode 40 connected from VDD via the resistor 39, and the zener voltage is applied to the buzzer 22, so the tone is different from that at the end of the process.

Similarly, if contact 2 is closed and the water level switch 41 remains closed and drainage is not completed forever, the output of contact 3 is input, and the output of timer 44, which operates while the input is 1, is set after a certain period of time. 1, and the output of the AND gate 43 becomes 1 from φ,
Therefore, the output of DF/F45 read at the rising edge becomes φ1, and the NOR gate 30 is set to φ, inhibiting the output of AND gates 8, 12, and 16, and at the same time
The output of DF/F45 is input to gate 47.
The output of the DF/F 45 becomes an input to an OR gate 32 and triggers an astable multivibrator circuit 33, and the output of this circuit 33 is input to an AND gate 47.

46 is a frequency dividing circuit that divides the frequency of the oscillator 34 oscillation signal by 1/m, and its output is sent to an AND gate 47.
is input. Therefore, from AND gate 47,
A 1/m frequency-divided signal of the transmission signal at fixed time intervals is output, and according to the period, the light emitting diodes 10, 1
4, 18 and the buzzer 22 blink and sound intermittently. Note that H is a timer means.

As described above, according to the present invention, since the abnormality notification is continuously performed at regular intervals, even if you go out for a long time, you can notice the abnormality notification when you return home and take immediate action to deal with the abnormality. The user can efficiently handle abnormal situations. In addition, since the alarm is sent intermittently, even if an abnormality occurs while you are out for a long time, it will not be perceived as noise by the people around you, making it extremely effective as an abnormality notification.

[Brief explanation of drawings]

The figure is an electrical circuit diagram of a notification device for a washing machine in an embodiment of the present invention. A...first storage means, B...process progress detection means, C...display means, D...notification means, E...
...Detection means, F...Comparison means, G...Second storage means, H...Timer means.

Claims (1)

[Claims] 1. A control circuit having a process progress state detecting means as an input and a notification means as an output, and within this control circuit, a timer and a first circuit that stores set values for each process state.
storage means, a second storage means for storing an abnormal state, and a comparison means, the output of the process progress state detection means is input, and this input and the setting value of the first storage means are sent to the comparison means. Compare and
When the two do not match, it is stored as an abnormality in the second storage means, the timer is operated by the output thereof, and the notification means is continuously driven at fixed time intervals by the timer output. Washing machine notification device.