JPS60187126A - Long time timer - Google Patents

Abstract

PURPOSE:To recognize surely the time of replacement of components of the timer by constituting the long time timer with a counter whose storage content is relinquished through the disconnection of power and plural current fuses blown at each specified count of the counter. CONSTITUTION:An oscillated output generated by a ceramic oscillator 4 and capacitors 2, 3 is converted into a prescribed reference clock at the inside of the counter 1, and a reference clock is counted additively only with a load operating signal from a terminal IN(L) and reaches a prescribed value, then the level of a terminal OUT(1) reaches an H level at first, a transistor 17 is turned on so as to blow a fuse 15, a light emitting diode 7 is lighted and it is informed to the counter. Then the fuses are blown sequentially, the light emitting diode is lighted so as to inform the actual operating time of the device. Even if the counter is reset at the disconnection of power, the blown fuse remains as it is and not reset, then the long time timer output with high reliability is obtained.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a method for calculating the time difference when equipment is in operation and knowing when to replace parts used in the equipment. It concerns time timers.

2. Description of the Related Art Conventional Structures and Problems There are some home appliances, equipment, etc. whose components must be replaced or cleaned depending on the usage time. Also, for some products, the warranty period is specified as the number of hours of actual operation, and it is extremely important for these products to know the total number of hours that the product is actually operating. However, the additional time that is a problem with this simple Yosho is generally quite long, and it is not uncommon for it to extend to several thousand hours or more. Traditionally, such long-time timers have a long time, and because it is necessary to know the elapsed time with a certain degree of accuracy, timers that use chemical changes caused by electricity (for example, electrolysis, etc.) are generally used. It was used. Long-term timers like Matato require PiZ tff action during power outages, and for this reason, timers that utilize chemical changes caused by electricity are generally used. However, such timers that utilize chemical changes caused by electricity also have many drawbacks.

One of them is price. Demand for long-term timers is limited compared to general timers, so there is hope for cost reduction due to the cleaning effect. Furthermore, chemical timers are expensive as they contain chemicals such as electrolytes. Currently, timers are more expensive than general timers due to the combination of factors such as difficulty in assembly and difficulty in assembling them.

The second drawback is that it is difficult to freely change the elapsed time/stiffness and 1J. If parts are replaced for some reason before the long-term timer times out, it is necessary to speed up the timer and bring it back to the initial value. j. There is a limit to increasing the advance speed, and it is virtually impossible to increase the speed by -5.

Furthermore, when using a timer that has timed up again, this is not possible with many of these types of timers. Moreover, even if it is not possible, chemical history remains and problems such as gradual changes in tights-up time occur, and in fact, regeneration is not performed much at present. The third problem is the processing of timers that are up. Since timers utilize chemical changes, their constituent materials often contain extremely harmful substances, such as mercury. In other words, a timer that is no longer needed (strictly speaking, a timer element) cannot be simply thrown away; in principle, it is necessary to recover it in some form. Despite the fact that long-term timers that utilize chemical changes have many drawbacks, they are still in general use today simply because there is no other good method.

However, recently some general home appliances have appeared that have parts that cannot be replaced or cleaned at certain intervals, such as a dust removal filter (hereinafter simply referred to as a filter). Air conditioners, air purifiers, heaters, etc. require air to be blown, so in the process of sucking in air from the outside and then blowing it out, dirt and dust in the air gradually settles inside the equipment. If left unattended, the original functionality of the device will be affected. A filter is installed at the air intake 1-1 to prevent this.
Its role is to remove dirt and dust from the air in advance.

However, if this is used continuously, it will quickly become clogged, which will impede the original function of the device.Generally, some method is required to add up the usage time of the device and notify when it is time to replace the filter. Come next to me. By the way, in recent years, timers using microcombinations, etc. have become common in home appliances, and these timers are advanced by programs, so as long as the power supply is secured, It has the great advantage of being able to be configured with a long-time timer.

For this reason, recently some long-term timers that use this are used in things that are somewhat similar to equipment, such as air conditioners and appliances. However, as is well known, when a timer consisting of a microcombi, etc. is used, unless special memory or power failure compensation is taken into consideration, the timer's addition results disappear when the power is turned off. In other words, in devices such as air conditioners that are used in a fixed position and rarely unplugged, the memory contents of the timer will be maintained for a long time even if the device itself is apparently powered off. It's easy to do.

1 ~ IJ, such a simple long time timer, is not applied to small devices that are often unplugged from the outlet.
In most cases, the long timer is a device + iii.
At present, the color of the h filter is compared with the color of ρ, and the lifespan is determined based on its dirt placement.

OBJECTS OF THE INVENTION The present invention obviates these conventional drawbacks,
Instead of using a long-time timer that utilizes electrical chemical change, which has been commonly used in the past, this is an inexpensive timer that consists of a microcomputer, etc., whose memory contents disappear when the power is turned off. There is a long-term timer that uses a simple method to memorize the elapsed time w3 even if the power is turned off and is not turned on.

Structure of the Invention The long-time timer of the present invention includes: 1. The long-time timer of the present invention is composed of a microcomputer or the like whose memory contents disappear when the power is turned off, and a relatively short reference time is used in the process of time up to time-up. The cylindrical fuses, etc., which can be easily replaced as the time passes, are blown out in order.Even if the power is turned off, it is possible to judge based on the history of the passage of the minimum reference time after the power is restored. .

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a circuit diagram of an example of a long time timer of the present invention. 1 is a counter such as a microcomputer; 2.
3 is a capacitor, 4 is a ceramic resonator, 5 is a lead wire from the output port of counter 1, 6 (/: 1, output port)
1. Interface for expansion, 7° 8 (d: light emitting diode, 9, 10 what: diode, 11. 12, 13.
14 is a resistor, 15.16 is a cylindrical current fuse according to the present invention, 17.18 is an NPNI-run shifter, 19.2
0 is resistance.

Next, the basic operation of this circuit will be explained. The counter 1 performs clock oscillation using a ceramic oscillator 4 and a capacitor 2.3, and the reference time d generated internally is completely dependent on the frequency of this clock oscillation.

Therefore, the reference time created inside counter 1 (d is created with extremely high precision and added? This is a terminal for the purpose of informing the counter 1 whether it is actually moving or not. For example, if it is moving, it will be at H level, and if it is not moving, it will be at L level. (For simplicity, the generation part of this signal is omitted.) The counter 1 adds the reference time only during the time when the terminal 1N (L) is at the H level and sequentially stores it. However, with this !F size, when the power is turned off, the memory contents are completely erased.

After switching, the time addition standard becomes 1 (which returns to the beginning).

By the way, it is assumed here that the time-up time of the long-time tie-7 is 1000 hours, and that this time is divided into 10 equal parts, and the fuses 16 and 16 are blown out every 100 hours.

In other words, the counter 1 adds the time that the terminal 1N (Q) is at the H level according to the reference time, and every time the value reaches 100 hours, it is connected to the 1 loaf wire 6. An output signal is sent out from the output boat that is connected to the fuse to be fused.
This item is used to expand the number of output ports of the computer, and is not necessary if there is enough space for the microphone and the output port of the computer. By the way, in this example, the first step is to create interface 6.
0UT (1) is selected and becomes H level. By the way, to add a little explanation about the display circuit before OUT (1) becomes H level, the light emitting diode 7 is connected in series with the resistor 11 between the power supplies ■ and ○, but both ends of the light emitting diode is short-circuited by the fuse 15 and diode 9, so the light emitting diode 7 is off. In this state, interface 60 output capo-1.0U
When T(1) becomes H level, N P
A current is sent to the Nl-run shifter 17,
NPNI-run shifter 1γ is turned on. But NPN
Since the load on the I-run shifter 17 is only the fuse 15, the collector current becomes extremely high and the fuse 16 melts in an instant. As the fuse 16 blows out, the light emitting diode 7 lights up, and the collector potential of the NPNI run shifter 17 changes from H level to L level by the resistor 13. 1
[Reportedly.

In other words, once a fuse has blown, the counter 1 can easily determine which fuse has blown out even if the power is once turned off, as long as the power is restored, based on the input from the terminals 1N(1) to 1N(1o). Then, each time the addition of 100 hours is completed, an output for blowing the next fuse is sent out through the interface 6. The following operation explanation is the same as the previous explanation, so it will be omitted. 1.To go ζte 1°, it is completely 100
Compared to counting only inside counter 1 towards time 0, the degree to which the addition result disappears due to a power outage is extremely small, making it possible to use a highly reliable long-term timer. This figure shows an example of a filter display panel having a circuit such as 20th panel surface, 21st panel surface.
is a light emitting diode array, and every 100 hours v
The light-emitting diodes 1-1 are lit in order starting from the cF side, and after 1,000 hours, which is the life of the filter, all the light-emitting diodes 1-1 are lit to notify the filter.

Effects of the Invention As described above, according to the present invention, it is possible to provide a highly reliable long-time timer that divides a long period of time into relatively short periods of time, and divides the elapsed time into relatively short periods of time by blowing fuses. Furthermore, since the storage method is to fuse and blow out a cylindrical fuse that can be easily replaced, there are advantages in that it is easy to reproduce and parts can be obtained at extremely low cost.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram in which only the main parts of a long-time timer are extracted in one embodiment of the present invention, and Figure 2 is a display board when the circuit example in Figure 1 is applied to a specific filter checker display. It is a front view showing an example. 1 ・Counter, 15 Current Hi. -zu.

Claims (1)

[Claims] A replaceable current fuse such as a cylindrical heater that melts every time a counter of a microcomputer (such as a microcomputer) whose memory contents are erased by turning off the power supply counts a predetermined number of hours. A long time timer with