JP2758350B2 - Microcomputer control equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery-operated microcomputer control device.

[0002]

2. Description of the Related Art Conventionally, a microcomputer and a quartz oscillator (2 MHz) externally attached to the microcomputer have been used.
z), a battery, a battery-operated gas table comprising: an operation switch whose contact is switched to a closed state by a pressing operation of an operation knob; a thermistor for detecting the temperature of the bottom of the cooking vessel; an electromagnetic safety valve and an electromagnetic safety valve driving circuit. (Microcomputer control equipment) is known.

[0003]

In this gas table, when the operation knob is pressed, the supply of operating power to the microcomputer is started, and the peripheral circuits (thermistor circuit, electromagnetic safety valve drive circuit, operation switch peripheral circuit) are operated. Peripheral circuit stabilization standby time (50 mS) until sensor signals, voltages, etc. stabilize, clock stabilization time (130 mS) until clock signals stabilize, software initial setting time for initializing control programs (50 mS), and driving After the elapse of the microcomputer start-up preparation time (310 mS), which is the sum of the electromagnetic safety valve circuit initial check time (80 mS) for checking the operation of the transistor, the microcomputer permits energization of the electromagnetic safety valve and the ignition circuit (FIG. 4 "Conventional product").

[0004] Therefore, if the user immediately releases the hand (less than 310 mS) after pressing the operation knob, the electromagnetic safety valve does not open and the sparker discharges because the microcomputer has not been started. The burner is not ignited (see the two-dot chain line in FIG. 4).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery-operated microcomputer control that can reduce the preparation time for starting the microcomputer without causing significant battery consumption, and that allows the microcomputer to start controlling the actuator early when the operation knob is operated. In providing equipment.

[0006]

In order to solve the above-mentioned problems,
The present invention employs the following configuration. (1) and synchronous microcomputer control programs executed based on the clock signal, and the external is the oscillator in the microcomputer for generating the clock signal which controls the progress of the operation of the microcomputer, the A battery that stores operating power for operating the microcomputer and the actuator, an operation switch that controls the supply of power to the microcomputer and switches the contact from an open state to a closed state by operating an operation knob, and a sensor corresponding to a physical quantity a sensor sends a signal to the microcomputer, the example Bei an actuator that is controlled by the microcomputer, when the supply of work dynamic power is started, the peripheral circuit stabilization wait time, the clock stabilization time, and a soft initialization time microcomputer start preparation time has elapsed, which consists of After the microcomputer
In a microcomputer control device that starts controlling the actuator at a predetermined execution processing speed, the oscillator is
Specific execution speed that is faster than the fixed execution speed
An oscillator having a frequency, and the control program
The execution speed of the program after the elapse of the software
Is set slower than the execution speed during the
You .

[0007] (2) The microcomputer control device, in addition to the above (1), the peripheral circuit stabilization wait time was also used as the clock stabilization time.

[0008]

The oscillator has an execution processing speed higher than a predetermined execution processing speed.
An oscillator with the obtained natural frequency
The control program is executed after the elapse of the software initialization time.
Speed is set lower than the execution speed during the software initialization time.
Have been. Therefore, if the clock stabilization time can be reduced
The execution of the control program during the software initialization time
Processing speed can be increased, and the start-up preparation time is reduced.
In the state after the microcomputer is started, it is consumed.
The increase in current can be kept low.

[Claim 2] By using the peripheral circuit stabilization standby time also as the clock stabilization time, the microcomputer startup preparation time is reduced.

[0010]

【The invention's effect】

[Claim 1] The microcomputer startup preparation time can be shortened, and the operation of the operation knob allows the microcomputer to start the control of the actuator at an early stage. still,
Since the current consumption only increases until the end of the software initial setting time, the life of the battery hardly changes.

According to a second aspect of the present invention, the peripheral circuit stabilization standby time is also used as the clock stabilization time, and further, the microcomputer startup preparation time can be reduced. When the operation knob is operated, the microcomputer controls the actuator. Can be started even earlier.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in the figure, the gas table A includes a microcomputer 1, a crystal oscillator 2, a battery 3, micro switches 41, 42, 43 as operation switches, thermistors 51, 52 as sensors, and actuators. An ignition circuit 6 and electromagnetic safety valve circuits 81, 82, 83 are provided.

711 is an M burner (medium), 712 is an H burner (large), 713 is a grill exhaust port, 714 is a battery storage box, 715 to 717 are dot / fire buttons, 718 to
720 is a heating power control lever, and 721 is an L for indicating a dead battery.
ED and 722 are pottery switches with built-in LEDs 722a, and 723 and 724 are temperature-sensitive cylinders with thermistors 51 and 52 provided therein.

The microcomputer 1 is of a synchronous type that executes a control program based on a clock signal. When the supply of battery power is started by closing the micro switches 41, 42, and 43, the microcomputer 1 has passed the peripheral circuit stabilization standby / clock stabilization time, the software initial setting time, and the electromagnetic safety valve circuit initial check time. Later, microswitches 44 and 4 described later will be described.
A valve opening signal is sent to the SV driving circuits 811, 821, and 831 in response to the input of the closing signal sent by 5 and 46, and an ignition signal is sent to the IG driving circuit 61 of the ignition circuit 6.

The execution speed of the control program of the microcomputer 1 is different during the software initial setting time and after the software initial setting time has elapsed, and is set so as to be slower after the software initial setting time has elapsed. I have.

The crystal oscillator 2 has a natural frequency of 4.19M.
Hz.

The battery 3 is formed by connecting four single-type manganese batteries in series, and is housed in a battery housing box 714. This battery 3 can be used for about one year under normal use.

Point / fire button 715, 716, 717
When the switch is pressed from the fire extinguishing position to a predetermined position, the contacts of the micro switches 41, 42, 43 are switched from the open state to the closed state, and the microcomputer 1,
1, 821, 831 and supply of battery power to the voltage division switching circuits 511, 521, etc. are started.

Also, the dot / fire button 715, 716, 71
When the button 7 is pressed further, the contacts of the normally open microswitches 44, 45 and 46 are closed during the pressing, and a closing signal is sent to the microcomputer 1. Then, the micro switches 44, 45, 46
It is opened by releasing the pressing of 15, 716 and 717. At this time, the micro switches 41, 42, 43
Contacts remain closed. The opening and closing of such a switch is controlled using a heart cam mechanism, for example, as disclosed in Japanese Patent Publication No. 1-59498 by the present applicant.

The thermistors 51 and 52 are
0 and 520 are temperature sensors for detecting the temperature at the bottom of the container, and an output signal is input to the microcomputer 1 via the partial pressure switching circuits 511 and 521.

The ignition circuit 6 has an IG drive circuit 61 for generating a high voltage according to an ignition signal, and ignition electrodes 62, 63, 64, 65 for performing a spark discharge by the high voltage.

The electromagnetic safety valve circuits 81, 82, and 83 include an M burner 711, an H burner 712, and a fire burner 72 on the grill.
5. Electromagnetic safety valves 812, 822, 832 disposed in a gas line for supplying gas to the lower grill burner 726;
SV drive circuits 811, 8 having two power transistors for driving electromagnetic safety valves 812, 822, 832
21 and 831.

The gas table A of the present invention has the following advantages. Peripheral circuits (voltage division switching circuits 511, 521, SV
Until the sensor signals and applied voltages of the drive circuits 811, 821, 831 and the microswitch input circuit 40) are stabilized,
The peripheral circuit stabilization standby time for preventing the microcomputer 1 from outputting a control signal is also used as the clock stabilization time until the clock signal is stabilized, and the natural frequency of the crystal oscillator 2 is set to 4.19 MHz. As a result, the peripheral circuit stabilization standby and clock stabilization time could be reduced to 75 mS.

The software initialization time for initializing the control program is determined by setting the natural frequency of the crystal oscillator 2 to 4.19.
By setting to MHz, the execution speed of the control program could be increased, and it could be set to 15 mS.

For this reason, the microcomputer startup preparation time is reduced by 3
It can be reduced from 10 mS to 170 mS, and after the user presses the point / fire button 715, 716, 717,
Immediately (requires 170 mS or more), release the hand, and as shown by the two-dot chain line in FIG. 4, even if the micro switches 44, 45, and 46 are opened early, the M burner 711 and the H burner 7
12. Grill burner burner 725, grill burner burner 72
6 can be fired.

It should be noted that until the micro switches 41, 42, 43 are closed and the software initial setting time is over (90 ms).
During the period, the current consumption increases compared to the conventional one, but after the soft initial setting time, the current consumption becomes substantially the same as the conventional one, so that the battery life is almost the same as the conventional one.

[Brief description of the drawings]

FIG. 1 is a top view (top) of a gas table according to the present invention,
And a front view (bottom).

FIG. 2 is a structural explanatory view of the gas table.

FIG. 3 is a block diagram of the gas table.

FIG. 4 is an explanatory diagram comparing a microcomputer start preparation time in a conventional gas table with a microcomputer start preparation time in a gas table according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 microcomputer 2 crystal oscillator (oscillator) 3 battery 6 ignition circuit (actuator) 41, 42, 43 microswitch (operation switch) 51, 52 thermistor (sensor) 81, 82, 83 electromagnetic safety valve circuit (actuator) 715 716, 717 points, fire extinguishing button (operation knob) A gas table (microcomputer control equipment)

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toshifumi Kitakami 2-26 Fukuzumi-cho, Nakagawa-ku, Nagoya-shi Inside Rinnai Corporation (72) Inventor Hiroyuki Makita R-71 Kannon-do-cho Kanazawa-shi RBI Control (72) Inventor Norio Miyazaki No. 71 Kannondo-cho, Kanazawa City, R.B. Controls Co., Ltd. (56) References JP-A-3-6607 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) G06F 1/04 F24C 3/12

Claims (2)

(57) [Claims] 1. A external to said microcomputer a control program and synchronous microcomputer that executes on the basis of a clock signal, for generating said clock <br/> click signal which controls the progress of the operation of the microcomputer An oscillator to be operated, a battery storing operating power for operating the microcomputer and the actuator, and an operation for controlling power supply to the microcomputer and for switching a contact from an open state to a closed state by operating an operation knob. a switch, a sensor sends a sensor signal commensurate with the physical quantity in the microcomputer, the example Bei an actuator that is controlled by the microcomputer, when the supply of work dynamic power is started, the peripheral circuit stabilization wait time, the clock stable Time and software initial setting time .
Said microcode after microcomputer startup preparation time has elapsed that
In a microcomputer control device in which a computer starts controlling the actuator at a predetermined execution processing speed, the oscillator controls an execution process faster than the predetermined execution processing speed.
That the oscillator has a natural frequency that can provide
In addition, the control program executes after the elapse of the software initial setting time.
Line processing speed is slower than execution speed during software initialization time
A microcomputer control device characterized by being set . 2. The microcomputer control device according to claim 1, wherein the peripheral circuit stabilization standby time is also used as the clock stabilization time.