JPS58200313A - Automatic load controller - Google Patents

Abstract

PURPOSE:To set the operation condition of a load in a nondetection state optionally when a body is detected by setting the firing phase angles of the thyristors of a phase control circuit respectively when a body detection signal and a body nondetection signal are obtained from a body detecting circuit. CONSTITUTION:The controller is constituted of a phase control circuit 3 connected in parallel to the serial circuit of an AC power source 1 and a load 2, and the body detecting circuit 4 which detects an body. Ignition phase setting circuits 5a and 5b provided to the phase control circuit 3 include the thyristors T whose firing phase angles are specified respectively when the body detection signal VD is obtained from the body detecting circuit 4 and when not (namely, when the body nondetection signal V'D is obtained). Consequently, the operation conditions of the load 2 when the body X is detected and not detected are set optionally to improve versatility.

Description

[Detailed Description of the Invention] The present invention relates to an automatic load control device that controls a load using the output of an object detection circuit such as a Super Wave Zwitch, and its purpose is to It is an object of the present invention to provide a highly versatile load milling motion control device that allows the operating state of a load to be set arbitrarily when no object is detected.

゛Conventionally, the problem with this type of automatic load control device is that the load is activated when an object detection signal is obtained from an object detection circuit such as an ultrasonic switch that detects an object, and when the object detection circuit is not detected. The load was not activated. In other words, when the load □ is a lighting load, the lighting load is turned on at 100% when an object is detected, and the lighting needle □ is turned off when no object is detected. In the example, the load is oscillated,
You can set the operating state as you like by simply controlling it. 4 Yua, u*si Depending on the situation, there were cases where it was futsuya. The present invention has been developed in view of the above points.゛ □Examples will be explained below using figures. Figures 1 to 3 show ==kawamei-example, and (3) is AC type source + t) and ★load (2).
A phase control circuit connected in parallel with two series circuit lines (A'l The firing phase angle of the bidirectional triac (hereinafter abbreviated as TRIAC) (r) is based on the object detection circuit non-detection signal (tail) output from the object detection circuit (4). It is now set. Here, the object detection circuit (4) is a transducer (
4a) and a signal processing circuit (4b), the ultrasonic waves Q)) emitted from the transducer (4a) are reflected by the object flash @) and are transmitted to the transducer (4a) K within a predetermined time. The signal processing circuit (4b) determines whether or not it has been received, and outputs an object detection signal (VD) and an object non-detection signal (V, . . . ). FIG. 2 is a block circuit diagram showing the schematic configuration of the phase control circuit (3), where (Dl) is a diode, (D
B) is a diode bridge, (5a) (5b) is a firing phase setting circuit that sets the firing phase angle of the triac σ),
(6) is a constant voltage circuit, and (Ql) (C2) is a switch shift transistor. Figure 3 shows a specific circuit example, in which the ignition phase setting circuits (5a) (sb) are
C1), Silicosunilateral switch (hereinafter abbreviated as SUS) (S), Pulse trasis (PT), Resistor (R
1) - (R2) and ignition phase setting volume (VR
x) (Vna), and the object detection signal (V
When D ) is obtained and when it is not obtained (that is, when the object non-detection signal (V, ) is obtained), the tria ν σ) is fired at each volume (VRI) (VB2), respectively. The phase angle is now set. Further, the constant voltage circuit (6) is formed of resistors (R3) (R4), diodes (DB), co-decisors (C2) (C3), Zener diodes (ZD), and transistors (C3), and A constant voltage (+Vc) is supplied to the signal processing circuit (4b) of the detection circuit (4).

The operation of the embodiment will be described below. Now, Figure 4 is a time chart showing the voltage waveforms at each point A-G.
If the object detection signal (VD) is obtained from time 1 to time 12, the object non-detection signal (V6) is at H level from time to to time 11 and after time 2, and the object detection signal (Vo) is at LL. /H, the transistor (C2) is turned on and the transistor (Ql) is turned off. Therefore, the voltage across the resistor (C1) is the combined resistance of the resistor (R2) and the regulator (VB2).
If so, it will be charged with the time constant CIRL, and the cosiden sensor (C1
) reaches the breakover voltage VBO of s
LJ S (S) is discharged through the primary winding of the pulse trasis (PT) and is induced in the secondary winding of the pulse trasis (FT) to the triac σ). conducts. In this case, the ignition phase angle of the trial (v) can be set to an arbitrary predetermined value αL using the volume control (VD2). On the other hand, from time point 11 to time point 12, the object detection signal (VD) is at H level and the object non-detection signal (V4) is at L level, so transistor (Ql) turns on and transistor (C2) turns off. Therefore, if the combined resistance of the resistor (R1) and the volume (VRl) is R, then the cosidecisor (C1) is the time constant CI
If charging is not performed at RH, the firing phase angle of the triac σ) can be set to an arbitrary predetermined value α using the volume (VRI).
Can be set to HK. Here, since the firing phase angles αL and αH can be set arbitrarily within the range of θ to 180°, the operating state of load (2) when an object is detected and when no object is detected depends on the type of load (2) or This means that the line load (2) can be set optimally according to the situation at the site where it is installed. In the example, the lighting load 1so* is turned on when an object is detected, and the lighting load (2) is set so that 20% of the lighting is turned on when no object is detected.
is a night light placed in the entrance or hallway. Also,
If the load (2) is a security buzzer, the load (2) is not operated when no object is detected, and the operating state (volume) of the load (2) is set to a volume (VRI) when an object is detected.
) may be set arbitrarily.

As described above, the present invention is composed of a phase control circuit connected in parallel to a series circuit of an AC power source and a load, and an object detection circuit for detecting an object, and an object detection signal is obtained from the object detection circuit. The device is equipped with a firing phase control circuit that sets the firing phase angle of the thyristor of the phase control circuit to a predetermined value when the firing phase angle is set to a predetermined value when the firing phase angle is set to a predetermined value when the firing phase angle is set to a predetermined value. Since the state can be set arbitrarily, the operating state of the load can be optimally set according to the type of load or the situation at the site, which has the advantage of providing a highly versatile automatic load control circuit. be.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is a circuit diagram of the main parts of the same as above, and Fig. 3 is a specific circuit diagram of the main parts of the same as above (
(The fourth figure is an explanatory diagram of the same operation as above. (l is an AC power supply, (2) is a load, (3) is a phase control circuit, (4) is an object detection circuit, (5a) and (5b) are It is an ignition phase setting circuit. Agent: Patent Attorney Ishi 1) Chief 7+17- Procedural amendment (spontaneous) 1. Indication of case: Special Application No. 81847 of 1981 2, Name of invention: Load automatic control device 3 , Relationship with the case of the person making the amendment Special liver applicant Address 1048 Bold Kadoma, Kadoma City, Osaka Name (583) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4 Agent postal code 530 Address Kita Ward, Osaka City 1-12-17 Umeda (5th floor, Umeda Building) Name (6176) Patent Attorney Doshi 1) Chief 7 Telephone Osaka (06) 345-7777 (Representative) 5. Date of amendment order Vol. 6. Inventions increased by amendment There is no number 8, the content of the amendment is corrected as shown in the attached sheet. Application number: Japanese Patent Application No. 57-81847 1, "or J k r and" is corrected in lines 2 to 8 of page 8 of the non-conforming specification. Mating. 2. Same as above, page 4, lines 1o to 111, "From t8...song/case," will be deleted in purple. 3. Same as above, page 5, lines 18 to 144 “0 to 1800
" will be corrected to rmin ~ 1800 (however, min incline 450) J. Agent Patent Attorney Ishi 1) Choshichi (11

Claims (1)

[Claims] fil A phase control circuit connected in parallel to a series circuit of an AC power source and a load.The left side is composed of an object detection circuit that detects an object.When an object detection circuit is obtained from the object detection circuit and when it is not obtained. , an automatic load control device comprising firing phase setting ports for setting the firing phase angles of the thyristors of the phase control circuit to predetermined values.
・