JPH0293802A - Remote controller - Google Patents

Abstract

PURPOSE:To eliminate a voltage comparator, etc., and to attain fine remote control with the simple constitution of a circuit by providing a resistance value reading means to operate a resistance value, which is switched by a remote control switch, and controlling an equipment according to this resistance value. CONSTITUTION:A control circuit is composed of a microcomputer 21 and a capacitor 22 and a reference resistor 24, which is connected to this capacitor, are provided. The resistance value reading means is provided to operate and output the resistance values of input resistors 28-30 from the resistance value of the reference resistor 24, the charging time of the capacitor 22 through the reference resistor 24 and the charging time of the capacitor through the input resistors 28-33. Then, the input resistance value from a remote control switch 2 is read by the resistance value reading means. Thus, it is not necessary to monitor a voltage change by the voltage comparator and precise control can be executed by the simple circuit constitution. Then, the control can be executed even by a pulse signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a device for remotely controlling the air volume of an electric fan, ventilation fan, etc.

[Prior Art] FIG. 10 is a circuit diagram in which a conventional remote control device disclosed in, for example, Japanese Unexamined Patent Publication No. 61-294194 is used to adjust the air volume of an electric fan.

In the figure, (1) is a control circuit, (2) is a remote control switch,
(2a) is the common contact of switch (2), (2b) is 1
(2c) is a "strong" contact, (2d) is a "1 weak" contact, (2e) is an "off" contact, and (3) is a fan electric motor. It is wound so as to obtain "weak" rotation, and has connection wires (4A) to (4D). (5) is a plug inserted into the commercial power supply, (7A)
(7B) are the first and second connection wires that connect the switch (2) and the main body (1), and the second connection wire (7B) and the "strong"
A first resistor R1 between the contacts (2b) and a first resistor R2 between the "middle" contacts (2C).

Similarly, a first resistor R3 is connected between the "weak" contacts (2d). Moreover, the "off" contact (2e) is directly connected to the second connection line (7B). R4 is the first connection line (7
The second resistor, R5, and C1 are connected between one end of A) and the DC positive power supply terminal (described later) ■, and C1 is a resistor and capacitor, R, that absorbs the surge voltage that enters from the first connection line (7A).
6 to RIO form a reference voltage generation circuit.

Each resistor is connected in series to the positive power supply terminal ■ and determines the reference voltage, and Q is the positive power supply terminal ■ and the output relay (
This is a blocking element inserted between 12) and (14), and a transistor is used in the figure. R11 is the positive power supply terminal■
and a resistor connected between the base of transistor Q, (8)
- (11) is a voltage comparator that compares the reference voltage and the voltage (comparison voltage) at one end of the first connection line (7A), (12) -
(14) are output relays that are energized when the outputs of voltage comparators (9) to (11) become "L,"respectively; (12a) to
(14a) are the contacts of the output relays (12) to (14), respectively, and the connection wires (4A) to (4c) are the contacts of the output relays (12) to (14), respectively.
It is connected to the plug (5) via 2a) to (14a). (15) is a DC power supply circuit.

Next, the operation of this device will be explained.

The DC power supply circuit (15) converts the commercial power supply into DC low voltage and generates a constant voltage Vd at the DC positive power supply terminal V. Further, since a positive voltage is applied to the base of the transistor Q via the resistor R11, the transistor Q is conductive.

First, setting of reference voltages of voltage comparators (8) to (11) will be explained.

This reference voltage is determined to have the following value.

Voltage comparator (8) reference voltage V, = 4/5 V
d Reference voltage Vs of voltage comparator (9) = 315vd Reference voltage V□ of voltage comparator (10). =215vd Reference voltage of voltage comparator (11) Vit=115vd Therefore, resistors R6 to RIO all have the same resistance value.

Further, the resistors R1 to R3 are set to the following values.

R1=7/3R4 R2=R4 R3=3/7R4 However, the resistor R4 is connected to the first and second connection wires (7A) (7
(B) shall be a value sufficiently larger than the sum of the resistance values R
4>RΩ).

When the resistance value is determined as described above, the comparison voltage generated at one end of the first connection line (7A) depending on the state of the switch (2) is as follows.

"Off"...0 "Weak"...3/10vd "Medium"...5/10Vd 1 High"...7/1OVd Therefore, 1 Weak '', the reference voltage of the voltage comparator (1o) is ■. and the reference voltage of the voltage comparator (11) ■□, and in the case of ``r'', the reference voltage of the voltage comparator (9) ■9 and the reference voltage of the voltage comparator (1o) V□. In the case of "a little more than 1", the voltage is between the reference voltage v8 of the voltage comparator (8) and the reference voltage (2)9 of the voltage comparator (9), and can be made less susceptible to noise and the like.

Now, when the switch (2) is set to "off", the voltage of the first connection line (7A) is zero, and the outputs of the voltage comparators (9) to (11) are all "H". Become. Therefore, the output relays (12) to (14) are all deenergized and the contact (14a) is open, so the electric motor (3) does not operate. Next, when switch (2) is set to "weak", the comparator pressure of the first connection line (7A) becomes 3/10Vd,
Only the output of the voltage comparator (11) becomes "L". Now, the output relay (14) is energized, the contact (14a) is switched, the lead wire (4c) is energized through the contact (14a) and the contact (13a), and the motor (3) is operated in "weak" mode. .

Similarly, when the switch (2) is in the "medium" position, the outputs of the voltage comparators (11) and (10) become rLJ, the output relays (14) and (13) are energized, and the leader wire (4B )
is energized and operates in "medium" mode. Switch (2) is set to “strong”
In this case, the outputs of the voltage comparators (11) to (9) become rlJ, and the output relays (12) to (14) are all energized and operate at 1 or more.

If the first or second connection wire (7A) (7B) is disconnected, the comparison voltage of the first connection wire (7A) is V
d, and the output of the voltage comparator (8) becomes r L J.

Now, the base voltage of transistor Q becomes rLJ, so transistor Q becomes non-conductive and the output relay (12
) to (14) are all deenergized, and the electric motor (3) is stopped.

[Problems to be Solved by the Invention] In the conventional remote control device as described above, the DC voltage for control was compared using voltage comparators (9) to (11) and converted into a drive signal. When trying to perform precise control, the number of voltage comparators (9) to (11) increases accordingly.
Furthermore, there is a problem that circuit design becomes difficult due to variations in element performance.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a remote control device that allows precise control with a simple circuit configuration.

Another object of the present invention is to provide a remote control device that can perform control using pulse signals in addition to the above object.

Another object of the present invention is to provide a remote control device that can collectively control a large number of devices at the same time in addition to the above object.

Another object of the present invention is to provide a remote control device that can simplify the program in addition to the second object.

Another object of the present invention is to provide a remote control device that can prevent a voltage drop in a commercial power source while a large number of devices are waiting for activation, in addition to the above object.

[Means for Solving Problem a] A remote control device according to the present invention includes a control circuit provided with a resistance value reading means for calculating a resistance value to be switched by a remote control switch, and controls equipment according to this resistance value. It was designed to do so.

Further, in the above remote control device according to another aspect of the present invention, the input signal is monitored for a predetermined period of time, and when the state of the input signal changes, the input pulse signal is received and the device is controlled. It is equipped with an input means.

Further, in a remote control device according to another aspect of the present invention, a plurality of control circuits are provided with the above-mentioned input means and an output means for emitting an output signal corresponding to an input signal, and the output means of each control circuit and the next stage are provided. The input means of the first control circuit are connected to the input means of the first control circuit, and a remote control switch is connected to the input means of the first control circuit.

Moreover, in the remote control device according to another aspect of the present invention, one of the H and L levels of the pulse signal is set to a constant time and the other is set to a variable time.

Further, a remote control device according to another aspect of the present invention is provided with a delay timer that transmits the input signal to the output means after a predetermined period of time after receiving the input signal.

[Function] In this invention, since the input resistance value from the remote control switch is read by the resistance value reading means,
Monitoring voltage changes using a voltage comparator becomes unnecessary.

Further, in another aspect of the present invention, when the state of the input signal changes, the input pulse signal is received, so that the device can also be controlled by the pulse signal.

In another aspect of the present invention, the control circuit is provided with an input means for receiving the resistance value reading input and the pulse signal, and an output means for emitting an output signal corresponding to the input signal. The control circuit is operated by the resistance change of the remote RB control switch, and the other control circuits are operated by the output signal from the output means.

Further, in another invention of the present invention, the pulse signal H
Since one of the and L levels is set to a constant time and the other is set to a variable time, the constants and variables of the resistance value calculation formula can be processed in correspondence with the constant time and variable time of the pulse signal.

Further, in another aspect of the present invention, since the transmission of the input signal is delayed by a delay timer, a plurality of devices are not activated at the same time.

[Embodiment] Fig. 1 and Fig. 2 are diagrams showing an embodiment of the present invention, Fig. 1 is a circuit diagram, and Fig. 2 is a flowchart showing a resistance value reading operation, and the same parts as the conventional device. are indicated by the same symbol.

In Fig. 1, (21) is a microcomputer (hereinafter referred to as microcomputer), P□. , P, are input/output ports,
It is configured to be switchable between two states: rHJ output low impedance and input high impedance, and P□2 to P□6 are output ports, and configured to be switchable between rLJ output low impedance and input high impedance. (22) is a capacitor with a capacity of C, (23) is a discharge resistor with a resistance value of Rs,
(24) is a reference resistance of resistance value Ro.

(25) (26) are resistors with resistance values R11 and R12, respectively, (27A) <2711) is a changeover switch, (2
7a) is a common contact.

(27b) is a "strong" contact, (27c) is a "medium" contact, (
27d) is the "r-weak" contact, and (27e) is the "off" contact. These changeover switches (27A) and (27B) switch the input resistors (28) to (33) with resistance values R13 to R18. Six patterns are set.

(A) R13 (B) R14 (T) R15 (1) Parallel resistance of R13 and R16 (E) Parallel resistance of R14 and R17 (power) Parallel resistance of R15 and R18 Next, we will explain the operation of this example. Value reading means (40)
This will be explained with reference to the flowchart of FIG. Note that this flowchart is stored in the memory (not shown) of the microcomputer (21), and is published in Japanese Patent Application Laid-Open No. 62-19
This is shown in Japanese Patent No. 2669.

First, in step (41), port P of the microcomputer (21)
Yo. The output of is set to rHJ, and ports P12 and P1 are set to high impedance. The reason why the output of port P0° is set to rHJ is to enable charging and discharging of the capacitor (22). Next, in step (42) register X is set to 12 (P
1□). In step (43), the output of port P is set to rHJ, and the charge in the capacitor (22) is discharged via the discharge resistor (23). At this time, step (4
Step 4) waits for the time required for discharging.

Next, in step (45), the boat P is specified as an input, and in step (46), the output of output port P 2 specified in register X is set to rLJ, and the reference resistor connected to port P The capacitor (22) is charged via (24), and in step (47) it is determined whether the input port P1 is rLJ, and in step (48) it is the time required until input port P11 detects rLJ. measure. Capacitor (
22) is completed and the input port P□1 detects rLJ, the charging time to measured in step (49) is stored in the memory of the microcomputer (21). Step (50
) makes the output port P12 high impedance.

In step (51), 1 is added to register X to make it 13. In step (52), it is determined whether the charging time meter side is completely finished. If not, the process returns to step (43), and the next initial discharge operation is performed in steps (43) and (44), and then in step (45). ~ (51) for the next measured resistance,
In other words, the above (a) to (of the remote control switch (2))
Which of the six patterns of resistance values of the control circuit (1
) Measure the charging time of the capacitor (22) via the series resistance value (Rx+R12) with the resistor (26).

The charging time at this time is assumed to be t□. When these operations are completed, the process proceeds from step (52) to step (53), where the resistance value R of the reference resistor (24) stored in the memory is determined.
6. At the time of measurement charging, the input resistance value (Rx+R12) is calculated from Bto-tt using the following equation.

Rx×R12=(Ro+R12)×t□/lIl...
■By the above operation, the input resistance value (Rx+R12) corresponding to the switching of the remote control switch (2) is read, and the output relays (12) to (14) are energized according to that value, and the fan's wind speed is controlled. .

3 and 4 are diagrams showing other embodiments of the present invention, and FIG. 3 is a flowchart 1 and 4 showing a signal input operation.
The figure is a pulse signal diagram, and FIG. 1 is also referred to in this embodiment.

This embodiment is shown in FIG.
) is connected to a device (not shown) that emits a pulse signal as shown in FIG.

Next, the operation of this embodiment will be explained with reference to the flowchart of FIG. 3 which constitutes the input means (60).

In step (61), the boats P1° and P□1 are set to high impedance, and the outputs of the boats P1□, P, and 3 are set to rLJ.

Boat P engineer. The reason why the capacitor (22) is made to have a high impedance is to prevent unnecessary charging and discharging of the capacitor (22).

This makes it possible to receive signals through the connection lines (7A) and (7B). At this time, if the pulse signals (71) to (76) shown in FIG. 4 are input so that the connection line (7A) is output to the positive side with respect to the connection line (7B),
Boat P, you should get a change signal of r HJ r I, J.

Now, in step (62), a timer is started to wait for a received signal for a predetermined period of time. Next, in step (63), wait for boat P to become r HJ, and in step (6
In step 4), the input of r l-I J is continued until the timer overflows. In step (63) the input is r HJ
When this happens, it is determined that a signal has been input from the outside, and reception of the signal is started in step (65). Step (64
) when it is determined that the timer has overflowed.

In step (6G), reading of the above-mentioned resistance value is started.

The pulse signals (71) to (76) are as shown in FIG.
The time of "g" is tl, the time of rLJ is t4, and the time t is for each of the pulse signals (71) to (76).
3 is constant, and time is made to vary.

By doing this, the constant R6+R]2 in the above formula 0 becomes 1, 1. By replacing L3 with t□,
As shown in equation (2), a pulse width ratio of 1'' can be recognized, and the device (3) can be controlled accordingly.

T=lxt, /l,... ■ Microcontrollers with 16 bits or more are equipped with division instructions, so programming is easy; however, with microcontrollers of 8 bits or less, there are no addition/subtraction instructions, so programming is difficult. It becomes complicated and requires long steps. Therefore, the above 0
By converting arithmetic instructions related to expressions and (2) expressions into subroutines and replacing constants and variables immediately before using each of the 0 expressions and (2) expressions, a common program can be used, and the steps of the program can be reduced.

When this pulse drive function is added, the control circuit (1
) can be input using two types of signals: a signal based on a resistance value and a signal based on a pulse, and driving from each remote control switch is possible.

5 and 6 show another embodiment of the present invention, in which the above-mentioned two control signal inputs, namely pulse signals (71) to
(76) and resistance value reading input to control a plurality of devices. FIG. 5 is an overall configuration diagram, and FIG. 6 is a block diagram of the control circuit.

In this embodiment, as shown in FIG. 5, five devices (3A) are used.
The control circuits (IA) to (IE) are connected to ~(3E), respectively, the signal input terminal A of the control circuit (IA) and the remote control switch (2) are connected by the connection wire (7), and the signal output terminal B is connected to the signal input terminal 5 of the control circuit (IB) by a connection line (7). Control circuit (3B) ~ (3E
) are connected in the same way.

In FIG. 6, (79) is an input means connected to the signal input terminal A and receives resistance value reading input, (8o) is a central control means operated by the output of the input means (79), (81)
is a driving means for driving the device (3A) by the output of the central control means (80), and (82) is a pulse signal (71) connected to the central control means (8o) and corresponding to the signal inputted from the input means (79). ) to (76) to signal output terminal B, and pulse signals (71) to (76) are input to all signal input terminals A of control circuits (IB) to (IE). That is, in the control circuit (IA), the central control means (80) determines the control state based on the input from the remote control switch (2), that is, the resistance value, and the drive means (80) determines the control state.
1) to control the device (3A). Then, a pulse signal (71) corresponding to the signal inputted by the input means (79) is generated.
) to (76) are output from the output means (82). The control circuit (IB) receives the pulse signal (
71) to (7G), the device (3B) is controlled and operates in the same way as the device (3A). Similarly, the control circuits (1c) to (IIE) receive pulse signals (71) to (7G).
The devices (3A) to (3E) are all driven by the same operation.

FIG. 7 is a block diagram of main parts showing another embodiment of FIG. 6,
The output of the central control means (80) is delayed and the output means (80)
2) is provided with a delay timer (83) for transmission.

As shown in Figures 5 and 6, multiple devices (3A) to (3
E) at the same time, a large amount of power is consumed after the power is turned on, which may cause the voltage of the commercial power supply to drop and affect other equipment. However, in this embodiment, the delay timer (83
), the output is sequentially transmitted to the next stage and below, and the device (3B)
~(3E) are activated sequentially.

Therefore, it is useful for preventing voltage drops in commercial power supplies.

FIG. 8 is a circuit diagram showing another embodiment of the output means (82) shown in FIG. The contacts of the changeover switches (27A) (27B) in the switch (2) are replaced with photocouplers (84) to (89), respectively, and the resistors (90) to (90) with resistance values R19 to R24 are used.
95) is the input resistor (28) in the remote control switch (2)
) to (33).

When such an output means (82) is used, the control circuit (I
In A), the same resistance value as the resistance value formed in the remote control switch (2) can be formed by switching the photocouplers (84) to (89). Therefore, the control circuit (
IB) to (IE) can be controlled by a resistance reading means similar to the control circuit (LA).

FIG. 9 is also a circuit diagram showing another embodiment of the output means (82), which is constituted by a photoresistor (96). Since the resistance value can be changed depending on the magnitude of the current applied to the photoresistor (96), the same operation as the output means (83) in FIG. 7 can be performed.

[Effects of the Invention] As explained above, in this invention, a resistance value reading means for calculating the resistance value switched by a remote control switch is provided, and equipment is controlled according to this resistance value, so that voltage comparators, etc. is no longer necessary, and a simple circuit configuration enables precise remote control.

In another aspect of the present invention, the input signal is monitored for a predetermined period of time, and when the state of the input signal changes, the input pulse signal is received and the device is controlled. This has the effect of allowing equipment to be controlled by both pulse signal input.

Further, in another invention of the present invention, the control circuit is provided with input means for receiving a resistance value reading input and a pulse signal input, and an output means for emitting an output signal corresponding to the input signal, and the output means of each control circuit. Since the input means of the next stage control circuit are connected to each other, and the remote control switch is connected to the input means of the first control circuit, the first control device is operated by the resistance change of the remote control switch, and other than that, the first control device is operated by the resistance change of the remote control switch. The control circuit is operated by an output signal from the output means, and has the advantage of being able to simultaneously control a large number of devices.

In addition, in another invention of the present invention, one of the H and L levels of the pulse signal is set for a fixed time and the other is set for a variable time, so that a common program can be used for both the case using the resistance value reading signal and the case using the pulse signal. It has the effect of reducing program steps.

Furthermore, in another invention of the present invention, since the input signal is transmitted to the output means after a predetermined period of time after receiving the input signal, multiple devices are not activated at the same time, and other devices are not activated due to a voltage drop in the commercial power source. This has the effect of preventing effects on equipment.

[Brief explanation of the drawing]

1 and 2 are diagrams showing one embodiment of a remote control device according to the present invention, in which FIG. 1 is a circuit diagram, FIG. 2 is a flow chart showing a resistance value reading operation, and FIGS. 3 and 4 are diagrams showing an embodiment of a remote control device according to the present invention. FIG. 3 is a flowchart showing a signal input operation, FIG. 4 is a pulse signal diagram, and FIGS. 5 and 6 are also diagrams showing other embodiments of the invention. , FIG. 5 is an overall configuration diagram, FIG. 6 is a block diagram of the control circuit, FIG. 7 is a main part block diagram showing another embodiment of FIG. 6, and FIGS. 8 and 9 are the same as that of FIG. A circuit diagram showing another embodiment of the output means,
FIG. 10 is a circuit diagram showing a conventional remote control device. In the figure, (1) (IA) to (IE) are control circuits, (2)
is a remote control switch, (3) (3^) ~ (3E) is a device, (7) (7A) (78) is a connection line, (12) ~
(14) is the output relay, (21) is the microcontroller, (22)
is a capacitor, (24) is a reference resistor, (28) to (33
) is a resistance, (40) is a resistance value reading means, (60) is an input means, (71) to (76) are pulse signals, (79)
is an input means, (82) is an output means, and (83) is a delay timer. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (5)

[Claims] (1) A remote control switch that sequentially switches multiple input resistors, a control circuit that is connected to this switch via a connection line and outputs an output according to the resistance value of the input resistor, and a control circuit that outputs an output according to the resistance value of the input resistor, and controls according to the output of this control circuit. The control circuit is configured with a microcomputer, and a capacitor and a reference resistor connected to the capacitor are provided,
Resistance value reading means for calculating and outputting the resistance value of the input resistor from the resistance value of the reference resistor, the charging time of the capacitor via the reference resistor, and the charging time of the capacitor via the input resistor. A remote control device comprising: (2) The input signal input through the connection line is monitored for a predetermined period of time by suppressing charging and discharging of the capacitor, and when a change in the state of this input signal is detected, the pulse signal input through the connection line is 2. The remote control device according to claim 1, wherein the control circuit includes input means for receiving and controlling the device. (3) Arrange multiple control circuits, and these control circuits,
An output means is provided for emitting an output signal for controlling the equipment in response to an input signal received by the input means, and each of the control circuits connects the output means to the next control circuit, and a first
3. The remote control device according to claim 2, wherein a remote control switch is connected to the input means of the control circuit. (4) Claim 3, which is provided with a delay timer that transmits the input signal to the output means after a predetermined period of time after receiving the input signal.
Remote control device as described in section. (5) The remote control device according to claim 3, wherein the pulse signal is composed of an H level and an L level, one of which is set for a fixed time and the other is set for a variable time.