KR200350150Y1 - Timing control circuit for sequencial camera - Google Patents

Abstract

The automatic timing control circuit of the sequential photographing camera according to the present invention alternately repeatedly outputs 'H' and 'L' control signals every predetermined time through the time setting unit 10 and the timer IC 20, and the switching unit 30. By controlling the CCD1 switch 31 and the CCD2 switch 32 of), and having two CCDs in one camera case, one direction can be photographed in multiple directions with one DSP, thereby exhibiting high efficiency at low cost. By adding the detection sensors 41 and 42 and the microcomputer 40 generating the interrupt signal, the disadvantage of the sequential photographing method can be eliminated.

In addition, one camera can be installed even when shooting in various directions, thereby limiting the installation location and the complexity of cable connection, and the CCD installed inside the camera uses a mixture of black and white and color. There is an effect that can represent both the advantages of and the advantages of the color CCD.

Description

TIMING CONTROL CIRCUIT FOR SEQUENCIAL CAMERA}

The present invention relates to a camera for surveillance, and to an automatic timing control circuit of a sequential shooting camera that is equipped with two CCDs in one surveillance camera, by switching the CCDs sequentially to shoot in both directions in real time. In particular, when a predetermined signal is transmitted from the detection sensor by providing a separate detection sensor for each monitoring direction, the microcomputer generates an interrupt signal, so that the direction in which the object is detected can be intensively photographed. It relates to an automatic timing control circuit.

In general, security surveillance cameras (closed circuit television cameras) photograph certain places or objects that are far away and send them to the closed circuit television so that abnormalities of the photographed places or objects can be checked on the closed circuit television without going to the field. As a photographing device, a variety of uses have been diversified in buildings, parking lots, apartment complexes, and the like, as well as general surveillance cameras for improving the efficiency of management and expenses, as well as automobile safety devices.

On the other hand, the corridor or the corner of the building there are a number of directions that want to monitor, the conventional surveillance camera is equipped with a separate surveillance camera for each direction to monitor the monitoring work is excessive installation cost And there was a problem that the selection of the installation location in a limited place is difficult.

The present invention was devised to solve the above problems, and in a camera equipped with two CCDs, a separate automatic timing control circuit operates the individual CCDs sequentially at a time designated by the user to sequentially operate the two directions. It is possible to take a picture, and has a separate sensor for each monitoring direction. When a predetermined signal is transmitted from the detection sensor, the automatic recording of a sequential camera that generates an interrupt signal so as to intensively photograph the direction in which the object is detected through the microcomputer. The purpose is to provide a timing adjustment circuit.

1 is a block diagram schematically showing the configuration of a sequential camera type according to the present invention;

2 is a circuit diagram schematically showing a timing controller for adjusting time as an embodiment of the present invention;

3 is a graph showing that a constant time delay is formed by a capacitor and a resistance value in a timing IC according to the present invention;

Figure 4a, b is an operating state diagram schematically showing how the progressive camera according to the present invention operates.

<Brief description of symbols for the main parts of the drawings>

7: automatic timing control circuit

10: time setting section 11: jumper switch

12: Jumper 13: Resistance

14: resistance

20: Timer IC 21: Condenser

30: switching unit 31: CCD1 switch

32: CCD2 switch

40: micom 41: detection sensor 1

42: detection sensor 2

100: sequential camera

Hereinafter, the present invention will be described in detail by the accompanying drawings.

1 is a block diagram schematically showing the configuration of a sequential camera according to the present invention, Figure 2 is a circuit diagram schematically showing a timing adjusting unit for adjusting the time as an embodiment of the present invention, Figure 3 is the present invention Fig. 4A and B are graphs showing the operation of the sequential camera type according to the present invention.

The sequential camera 100 according to the present invention is provided with two CCDs (2, 4) in which the cameras (1, 3) are integrally included in one case, as shown in FIG. 2, 4 are controlled by one DSP (5) is output to the outside through the video out (6), the automatic timing control circuit (7) to sequentially time-control the two CCD (2, 4) switching The technical features of the ship.

In addition, when a predetermined detection signal is transmitted from the detection sensors 41 and 42 installed in each monitoring direction, the microcomputer generates an interrupt signal, and performs the microcomputer control on the switching unit to intensively monitor and photograph the corresponding direction.

Figure 2 shows an embodiment of the automatic timing control circuit according to the present invention will be described below the operation of the specific circuit.

The automatic timing control circuit 7 according to the present invention integrates a jumper switch 11 having a plurality of jumpers 12 and a resistor unit 13 in which a plurality of resistors 14 having different resistance values are connected in parallel. And including, and the time setting unit 10 for manually changing the resistance value according to the user's selection;

A timer IC 20 repeatedly outputting 'HIGH' or 'LOW' every predetermined time according to the resistance value selected by the time setting unit 10;

A switching unit 30 in which a plurality of transistors are connected in series or in parallel and integrally including a CCD1 switch 31 and a CCD2 switch 32 operating on and off according to a control signal of a timer IC 20;

It is provided separately for each monitoring direction and switches according to a plurality of detection sensors 41 and 42 for detecting a movement or heat of an object and generating a predetermined electric signal, and a detection signal transmitted from the detection sensors 41 and 42. The microcomputer 40 generates an interrupt signal for controlling the CCD1 switch 31 and the CCD2 switch 32 of the unit 30.

The time setting unit 10 is to change the resistance value according to the user's selection, in the present invention, as an embodiment of the jumper switch 11 is provided with four jumpers 12, four different resistance values The resistor portion 13 in which the resistors R1 to R4 having the parallel connection are used.

The jumper switch 11 is operated on and off by moving the jumper 12 to the left or the right, and when the user switches one of four jumpers to on and the other to off, the jumper switched to the on ( 12 is connected in series to the circuit, and the series connected resistor R4 determines the time delay of the timer IC 30.

The timer IC 20 alternately repeatedly outputs 'H' and 'L' control signals with a constant time delay according to the capacitance of the capacitor 21 and the resistance value of the time setting unit 10. As an example, the KA555 model, a single timer IC, is used, and the time delay determined by the capacitor capacity and the resistance value is based on the graph of FIG. 3.

That is, since the time delay of the timer IC 20 increases and decreases linearly according to the capacitor capacity and the resistance value, the time delay is specified according to the resistance value at the constant capacitor capacity. Therefore, in the present invention, the time delay can be arbitrarily adjusted by changing the resistance of the time setting unit 10.

On the other hand, since the time setting unit 10 serves to adjust the resistance value connected to the timer IC 30, in the present invention instead of the jumper switch 11 and the resistor unit 13 as another embodiment of the present invention. It can also be configured as a variable resistor (not shown) that the user can arbitrarily adjust the resistance value.

The switching unit 30 is configured by connecting a transistor, which is a general switching element, in series or in parallel. In the present design, the CCD1 switch 31 displays opposite output signals to each other according to a control signal transmitted from the timer IC 20. An even number of transistors are connected in series, and the CCD2 switch 32 has an odd number of transistors connected in series, and the CCD1 switch 31 and the CCD2 switch 32 are configured in parallel with each other.

Therefore, when the 'L' signal is input from the timer IC 20, the CCD1 switch 31 operates as 'L', the CCD2 switch 32 operates as 'H', and the 'H' signal from the timer IC 20. Is input, the CCD1 switch 31 is operated at 'H' and the CCD2 switch 32 is operated at 'L'.

First, the 'L' signal output from the timer IC 30 is transmitted to the base of the transistor Q1 to generate a 'H' signal to the collector of Q1, and the 'H' signal is transmitted to the base of the transistor Q2. The 'L' signal is transmitted to the CCD1 switch 31 connected to the collector of Q2 by the H 'signal, and is turned off.

The timer IC 30 'L' signal is transmitted to the base of the transistor Q3 to generate the 'H' signal to the collector of Q3, and the 'H' signal is transmitted to the base of the transistor Q4 to give the 'L' signal to the collector of Q4. Is generated, the 'H' signal is transferred to the CCD2 switch 32 connected to the collector of Q5 by the 'L' signal, and is turned on.

In addition, when the timer IC 30 outputs the control signal of 'H', the reverse operation is performed, and the 'H' signal is transmitted to the CCD1 switch 31 to be turned ON, and the CCD2 switch 32 'L' signal is transmitted to turn OFF.

On the other hand, since the sequential camera type photographs several directions sequentially, detailed shooting of the direction may be insufficient when an outsider invades through a specific direction.

Therefore, in the present invention, in order to prevent this, detection sensors 41 and 42 are provided for each monitoring direction, and when a predetermined detection signal is transmitted from the detection sensors 41 and 42, an interrupt signal is generated by generating an interrupt signal. It includes a microcomputer 40 forcibly switching only the CCD switch to 'on'.

That is, in the microcomputer 40, when the detection signal is transmitted from the detection sensor 1 41, the CCD1 switch 31 of the switching unit 30 is kept on, and the CCD2 switch 32 is kept off. Only one direction is continuously photographed through the CCD1 switch 31, and on the contrary, when a detection signal is transmitted from the sensing sensor 2 42, the CCD2 switch 32 of the switching unit 30 is 'on' and the CCD1 switch ( 31) keeps the 'off' to continuously shoot only one direction through the CCD2 switch 32 to enable more detailed surveillance shooting.

The detection sensor is preferably an infrared sensor for detecting the heat of the human body, a PIR sensor for detecting the movement of the animal, and other general electrical sensors for detecting the movement may be used.

The automatic timing control circuit of the sequential photographing camera according to the present invention can be monitored by photographing several directions sequentially even if only one is installed at the top of the corner when simultaneously monitoring two directions as shown in FIG. 4A. As shown in FIG. 4B, even in the case of simultaneously monitoring four directions, applications may be possible by a simple circuit parallel connection.

Since the circuit diagram shown in FIG. 2 is an embodiment of the present invention, any configuration for automatically switching the two CCD switches 31 and 32 as described above using another switching element other than the transistor is in the scope of the present invention. Belongs to.

The automatic timing control circuit of the sequential photographing camera according to the present invention alternately repeatedly outputs 'H' and 'L' control signals every predetermined time through the time setting unit 10 and the timer IC 20, and the switching unit 30. By controlling the CCD1 switch 31 and the CCD2 switch 32 of), and having two CCDs in one camera case, one DSP can photograph different directions sequentially with one DSP, thereby exhibiting high efficiency at low cost. By adding the detection sensors 41 and 42 and the microcomputer 40 generating the interrupt signal, the disadvantage of the sequential shooting method can be eliminated.

In addition, one camera can be installed even when shooting in various directions, thereby limiting the installation location and the complexity of cable connection, and the CCD installed inside the camera uses a mixture of black and white and color. There is an effect that can represent both the advantages of and the advantages of the color CCD.

Claims (3)

In the security surveillance camera, A jumper switch having a plurality of jumpers and a resistor unit in which a plurality of resistors having different resistance values are connected in parallel, and a time setting unit for manually changing a resistance value according to a user's selection; A timer IC for repeatedly outputting 'H' and 'L' control signals with a constant time delay depending on the capacitor capacity and the resistance of the time setting unit; A switching unit in which a plurality of transistors are connected in series or in parallel and integrally including a CCD1 switch and a CCD2 switch which operate on and off according to a control signal of a timer IC; Separately provided for each monitoring direction, a plurality of detection sensors for generating a predetermined electrical signal by detecting the movement or heat of the object, and interrupts for controlling the CCD1 switch and CCD2 switch of the switching unit according to the detection signal transmitted from the detection sensor Automatic timing control circuit of a sequential camera type, characterized in that composed of a microcomputer for generating a signal. The method of claim 1, The time setting unit is an automatic timing control circuit of a sequential photographing camera, characterized in that the jumper switch and a resistor instead of a variable resistor that the user can arbitrarily adjust the resistance value. The method of claim 1, The CCD1 switch and the CCD2 switch of the switching unit are configured in parallel with each other, the CCD1 switch has an even number of transistors connected in series, and the CCD2 switch has an odd number of transistors connected in series, and according to the control signal of the timer IC, the CCD1 switch and the CCD2 switch. Auto timing control circuit of a sequential photographing camera, characterized in that the output signals are opposite to each other.