KR20130104282A - Method for controlling electronic apparatus, electronic apparatus and camera - Google Patents

Abstract

PURPOSE: A control method of an electronic product, the electronic product, and a camera reduce the failure probability of the electronic product used in cryogenic environment and reduce manufacturing costs. CONSTITUTION: A control method of an electronic product includes a step of measuring the internal temperature of the electronic product when a power supply unit is on (S103); a step of supplying an additional current to a preparatory loader by additionally connecting the preparatory loader to the power supply unit when the measured internal temperature is lower than a set normal temperature (S109); and a step of not supplying the additional current to the preparatory loader by separating the preparatory loader from the power supply unit when the measured internal temperature is over than the set normal temperature after supplying the additional current to the preparatory loader (S113). [Reference numerals] (AA) Start; (BB,CC,FF,GG) No; (DD,EE,HH) Yes; (II) End; (S101) Has a power supply unit been turned on (On) ?; (S103) Measure the temperature within an electronic device; (S107) Stay in a standby mode; (S109) Supply an additional current to a preparatory loader by additionally connecting the preparatory loader to the power supply unit; (S113) Not supply the additional current to the preparatory loader by separating the preparatory loader from the power supply unit; (S115) Initialize; (S117) Control main functions; (S119) Is there an ending signal ?

Description

Method for controlling electronic apparatus, electronic apparatus and camera

The present invention relates to a control method of an electronic product, an electronic product and a camera, and more particularly, to a control method of an electronic product, an electronic product and a camera which can be used in a cryogenic environment.

In the case of electronic products, for example cameras, they can be used in cryogenic environments. If the electronic product is immediately initialized when the user turns on the electronic product in a cryogenic environment, the electronic product may malfunction.

Therefore, in the case of an electronic product used in a cryogenic environment, the heater is operated first, and when the temperature is above room temperature, initialization and main operation are performed.

According to such an electronic product, three heater-temperature sensors are needed to detect the low temperature, room temperature and high temperature of the heater and the heater. Here, the heater-temperature sensor for detecting low temperature is for turning on the heater, and the heater-temperature sensor for detecting low temperature is for turning on the heater, and the heater- for detecting room temperature- The temperature sensor is for performing an initialization mode, and the heater-temperature sensor for sensing a high temperature is for turning off the heater.

Thus, with conventional electronics, a significant number of parts are added for use in cryogenic environments. Accordingly, there is a problem that the probability of failure of the electronic product is increased, it is difficult to miniaturize, and the manufacturing cost is increased.

Korean Unexamined Patent Publication No. 1996-0034720 Applicant: Kia Motors Title of the Invention: Current Control Device and Method for Glow Plugs

Embodiments of the present invention provide a control method, an electronic product, and a camera of an electronic product, which can reduce the probability of failure of an electronic product used in a cryogenic environment, promote miniaturization, and reduce manufacturing costs.

According to a first aspect of the invention, steps (a) to (c) may be included in a method of controlling an electronic product having a power supply.

In step (a), when the power supply is turned on, the internal temperature of the electronic product is measured.

In the step (b), if the measured internal temperature is lower than the set normal temperature, a preloader is additionally connected to the power supply, and an additional current flows to the preload.

In the step (c), if the internal temperature measured after the additional current flows to the preliminary load is greater than or equal to the set normal temperature, the preloader is separated from the power supply, and the additional current is applied to the preload. It will not flow.

According to a second aspect of the present invention, an electronic product including a power supply unit, a main circuit unit, a mechanism unit, motors, a controller, a temperature sensor, a preload, and a load switch can be provided.

The main circuit portion is operated by power from the power supply portion.

The motors provide power for the movement of the mechanism.

The control unit is operated by power from the power supply unit.

The temperature sensor measures the internal temperature of the electronic product.

The load switch is connected between the power supply and the preload.

Herein, when the controller is operated by receiving power from the power supply, when the internal temperature measured by the temperature sensor is lower than the set normal temperature, the load switch is turned on to add additional current to the preliminary load. Let flow.

In addition, if the internal temperature measured by the temperature sensor after the load switch On (On) is above the set normal temperature, the load switch is turned off (off) so that no additional current flows to the preliminary load.

Meanwhile, the load switch includes one terminal, the other terminal, and the control terminal, the preliminary load device includes one terminal and the other terminal, and the one terminal of the load switch is one output power terminal of the power supply unit. The other terminal of the load switch is connected to the one terminal of the preload, the other terminal of the preload is grounded, and a switching control signal from the controller to the control terminal of the load switch. Can be input.

In addition, the preliminary load may be a plurality of resistors connected in parallel with each other between the load switch and the ground terminal.

In addition, the distance between the motors and the power supply may be shorter than the distance between the motors and the main circuit.

In addition, a heat sink and a circulation fan may be further included. Here, the heat sink radiates heat of the power supply unit. The circulation fan is provided for circulating radiant heat from the heat sink.

In addition, when the controller is operated by receiving power from the power supply, when the internal temperature measured by the temperature sensor is lower than the set normal temperature, the circulation fan is turned on after turning on the load switch. You can. In addition, if the internal temperature measured by the temperature sensor after turning on the load switch and the circulation fan is greater than or equal to the set normal temperature, the circulation fan is turned off after turning off the load switch. You can.

According to a third aspect of the present invention, a camera including a power supply unit, a main circuit unit, an optical system, motors, a controller, a temperature sensor, a preload, and a load switch may be provided.

The main circuit portion is operated by power from the power supply portion.

The motors provide power for the movement of the optical system.

The control unit is operated by power from the power supply unit.

The temperature sensor measures the internal temperature of the camera.

The load switch is connected between the power supply and the preload.

Herein, when the controller is operated by receiving power from the power supply, when the internal temperature measured by the temperature sensor is lower than the set normal temperature, the load switch is turned on to add additional current to the preliminary load. Let flow.

In addition, if the internal temperature measured by the temperature sensor after the load switch On (On) is above the set normal temperature, the load switch is turned off (off) so that no additional current flows to the preliminary load.

According to a control method of an electronic product, an electronic product, and a camera according to embodiments of the present invention using heat generation characteristics of the power supply unit, when the internal temperature of the electronic product is lower than a set normal temperature after the power supply unit is turned on, In addition, a preloader is additionally connected to the power supply, so that an additional current flows in the preload.

For example, before the initialization mode is performed in the cryogenic environment, the additional current flowing in the preload causes the maximum current to flow in the range that the power supply can supply.

Accordingly, since the power supply generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Thus, separate heaters and three heater-temperature sensors are unnecessary as in the prior art, and many effects can be obtained accordingly. That is, the probability of failure of the electronic product or the camera can be reduced, miniaturization can be enhanced, and manufacturing costs can be reduced.

In addition, as the preloader is a plurality of resistors connected in parallel with each other, the life of the preload may be extended due to current dispersion.

In addition, as the distance between the motors and the power supply is shorter than the distance between the motors and the main circuit part, the motors having low operating performance at low temperature can be heated more quickly and sufficiently.

In addition, by using the heat sink and the circulation fan, the temperature of the electronic product or the camera may be increased more quickly and uniformly.

1 is a flowchart illustrating a control method of an electronic product according to an embodiment of the present invention.
2 is a view showing the configuration and operation of the electronic product according to the first embodiment of the present invention.
3 is a flowchart illustrating a control operation of a controller of the electronic product of FIG. 2.
FIG. 4 is a diagram for describing an arrangement relationship of main components of FIG. 2.
5 is a view showing the configuration and operation of an electronic product according to a second embodiment of the present invention.
6 is a flowchart illustrating a control operation of a controller of the electronic product of FIG. 5.
7 is a view showing the configuration and operation of the camera of an embodiment of the present invention.

The following description and the annexed drawings are for understanding the operation according to the present invention, and a part that can be easily implemented by those skilled in the art may be omitted.

In addition, the specification and drawings are not provided to limit the invention, the scope of the invention should be defined by the claims. Terms used in the present specification should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention so as to best express the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a control method of an electronic product according to an embodiment of the present invention. A control method of an electronic product according to an embodiment of the present invention will be described with reference to FIG. 1.

If the power supply of the electronic product is On (step S101), the internal temperature Tim of the electronic product is measured (step S103). In addition, the measured internal temperature Tim and the set normal temperature Tset are compared (step S105).

If the internal temperature Tim is above the set normal temperature Tset in step S105, after the initialization mode is performed (step S115), main operation control is performed until an end signal is generated (steps S117 and S119). .

If the internal temperature Tim is lower than the set normal temperature Tset in step S105, the standby mode of the electronic product is performed (step S107), and a preloader is additionally connected to the power supply, so that an additional current is added to the preload. Flows (step S109). Accordingly, since the power supply generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Next, the measured internal temperature Tim and the set steady temperature Tset are compared after the additional current flows to the preload (step S111).

If the internal temperature Tim is greater than or equal to the set normal temperature Tset in step S111, the preloader is disconnected from the power supply so that no additional current flows during the preload (step S113). Further, after the initialization mode is performed (step S115), main operation control is performed until the end signal is generated (steps S117 and S119).

In summary, after the power supply is turned on (step S101), if the internal temperature Tim of the electronic product is lower than the set normal temperature Tset, a preloader is additionally connected to the power supply, and the preload is performed. An additional current flows through it.

For example, before the initialization mode is performed in the cryogenic environment, the additional current flowing in the preload causes the maximum current to flow in the range that the power supply can supply.

Accordingly, since the power supply generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Thus, separate heaters and three heater-temperature sensors are unnecessary as in the prior art, and many effects can be obtained accordingly. That is, the probability of failure of an electronic product can be reduced, miniaturization can be enhanced, and manufacturing costs can be reduced.

2 shows the configuration and operation of the electronic product of the first embodiment of the present invention.

Referring to FIG. 2, the electronic product according to the first embodiment of the present invention may include a power supply 21, a main circuit 22, a mechanism 23, motors M1 and M2, a controller 25, and a temperature sensor 26. ), A preload 27, and a load switch 28.

The power supply unit 21 receives AC power ACin and generates DC power of various voltages.

The main circuit section 22 operates by the power supply DCout from the power supply section 21.

Motors M1 and M2 provide power for movement of mechanism 23.

The control unit 25 is operated by the power supply DCout from the power supply unit 21.

The temperature sensor 26 provides the measured result data to the control unit 25 while measuring the internal temperature of the electronic product.

The load switch 28 is connected between the power supply 21 and the preload 27.

Herein, when the control unit 25 receives power DCout from the power supply unit 21 and operates, if the internal temperature measured by the temperature sensor 26 is lower than the set normal temperature, the control unit 25 turns on the load switch 28. (On) so that an additional current flows in the preliminary load (27).

For example, before the initialization mode is performed in the cryogenic environment, the maximum current flows in the range that the power supply 21 can supply due to the additional current flowing in the preliminary load 27.

Accordingly, since the power supply unit 21 generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Thus, separate heaters and three heater-temperature sensors are unnecessary as in the prior art, and many effects can be obtained accordingly. That is, the probability of failure of an electronic product can be reduced, miniaturization can be enhanced, and manufacturing costs can be reduced.

On the other hand, if the internal temperature measured by the temperature sensor 26 after the load switch 28 is on or above the set normal temperature, the load switch 28 is turned off to add to the preliminary load 27. Prevent current from flowing

More specifically, the load switch 28 includes one terminal 28a, the other terminal 28b, and the control terminal 28c. The preliminary load 27 includes one terminal 27a and the other terminal 27b.

One terminal 28a of the load switch 28 is connected to one output power terminal 21a of the power supply 21. The other terminal 28b of the load switch 28 is connected to one terminal 27a of the preliminary load 27. The other terminal 27b of the preliminary load 27 is grounded. The switching control signal from the control unit 25 is input to the control terminal 28c of the load switch 28.

In the present embodiment, the preliminary load 27 is a plurality of resistors R1 to Rn connected in parallel with each other between the load switch 28 and the ground terminal. Accordingly, the life of the preload 27 can be extended due to current dispersion.

3 illustrates a control operation of the controller 25 of the electronic product of FIG. 2. 2 and 3, a control operation of the controller 25 of the electronic product of FIG. 2 will be described.

If the power supply unit 21 is turned on (step S301), that is, when the power supply DCout from the power supply unit 21 is applied to the control unit 25 and the main circuit unit 22, the control unit 25 is a temperature sensor. The internal temperature measured at 26 is compared with the set normal temperature Tset (step S303).

If the internal temperature Tim is greater than or equal to the set normal temperature Tset in step S303, after performing the initialization mode (step S313), the controller 25 performs main operation control until an end signal is generated ( Steps S315 and S317).

If the internal temperature Tim is lower than the set normal temperature Tset in step S303, the controller 25 performs the standby mode of the electronic product (step S305), and turns on the load switch 28. Additional current flows through the preliminary load 27 (step S307). Accordingly, since the power supply unit 21 generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Next, the control unit 25 compares the internal temperature Tim measured after the additional current flows to the preliminary load 27 with the set normal temperature Tset (step S309).

If the internal temperature Tim is greater than or equal to the set normal temperature Tset in step S309, the control unit 25 turns off the load switch 28 so that no additional current flows in the preliminary load 27 ( Step S311). In addition, after performing the initialization mode (step S313), the controller 25 performs main operation control until an end signal is generated (steps S315 and S317).

FIG. 4 is a diagram for describing an arrangement relationship of main components of FIG. 2.

Referring to FIG. 4, in the present embodiment, the distance d1 between the motors M1 and M2 and the power supply unit 21 is the distance d2 between the motors M1 and M2 and the main circuit unit 22. Shorter than Of course, the distance d1 between the motors M1 and M2 and the power supply 21 is the average of the distances between the motors M1 and M2 and the power supply 21 and the motors M1 and M2. And the distance d2 between the main circuit part 22 may be an average of the distances between each of the motors M1 and M2 and the main circuit part 22.

Accordingly, the motors M1 and M2, which are poor in their performance at low temperatures due to their characteristics, can be heated more quickly and sufficiently.

5 shows the configuration and operation of the electronic product of the second embodiment of the present invention. In FIG. 5, the same reference numerals as used in FIG. 2 indicate objects of the same function. However, some additional matters occur in the control operation of the controller 25.

The difference between the second embodiment of FIG. 5 and the first embodiment of FIG. 2 is that the heat sink 51 and the circulation fan 52 are further included. Here, the heat sink 51 radiates heat from the power supply 21. The circulation fan 52 is provided for circulating radiant heat from the heat sink 51. Thus, some additions occur to the control operation of the controller 25.

6 illustrates a control operation of the controller 25 of the electronic product of FIG. 5. 5 and 6, the control operation of the controller 25 of the electronic product of FIG. 5 will be described.

When the power supply unit 21 is turned on (step S601), that is, when the power supply DCout from the power supply unit 21 is applied to the control unit 25, the main circuit unit 22 and the circulation fan 52, the control unit 25 compares the internal temperature measured by the temperature sensor 26 with the set normal temperature Tset (step S603).

If the internal temperature Tim is greater than or equal to the set normal temperature Tset in step S603, the controller 25 performs main operation control until an end signal is generated after performing the initialization mode (step S617) ( Steps S619 and S621).

If the internal temperature Tim is lower than the set normal temperature Tset in step S603, the controller 25 performs the standby mode of the electronic product (step S605), and turns on the load switch 28. Additional current flows through the preliminary load 27 (step S607). Accordingly, since the power supply unit 21 generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

In addition, the control unit 25 turns on the circulation fan 52 to circulate the radiant heat from the heat sink 51 (step S609). Accordingly, the temperature of the electronic product can be raised more quickly and uniformly.

 Next, the control unit 25 compares the internal temperature Tim measured after the additional current flows to the preliminary load 27 with the set normal temperature Tset (step S611).

If the internal temperature Tim is greater than or equal to the set normal temperature Tset in step S611, the control unit 25 turns off the load switch 28 so that no additional current flows in the preliminary load 27 ( Step S613). The control unit 25 also turns off the circulation fan 52 (step S615).

In addition, after performing the initialization mode (step S617), the controller 25 performs main operation control until an end signal is generated (steps S619 and S621).

7 shows the configuration and operation of a camera, for example, a surveillance camera, of an embodiment of the present invention.

Referring to FIG. 7, a camera according to an embodiment of the present invention includes a power supply unit 71, a main circuit unit (OEC) 720 to 725, an optical system 73, and motors Ma, Mz, Mf, Md, Mp, and Mt. , Control unit 75, temperature sensor 76, preload 77, and load switch 78.

The power supply 71 receives the AC power ACin and generates DC power of various voltages.

The main circuit units OEC 720 to 725 operate by the power supply DCout from the power supply unit 71.

The motors Ma, Mz, Mf, Md, Mp, and Mt provide power for the movement of the optical system 73.

The digital signal processor (DSP) as the control unit 75 operates by the power supply DCout from the power supply unit 71.

The temperature sensor 76 measures the internal temperature of the camera.

The load switch 77 is connected between the power supply 71 and the preload 77.

When the controller 75 receives power DCout from the power supply 71 and operates, when the internal temperature measured by the temperature sensor 76 is lower than the set normal temperature, the controller 75 turns on the load switch 78. To allow additional current to flow through the preload 77.

For example, before the initialization mode is performed in the cryogenic environment, the maximum current flows in the range that the power supply 71 can supply due to the additional current flowing in the preliminary load 77.

Accordingly, since the power supply unit 71 generates a large amount of heat due to its characteristics, the internal temperature of the camera may rise quickly.

Thus, separate heaters and three heater-temperature sensors are unnecessary as in the prior art, and many effects can be obtained accordingly. That is, the probability of failure of the camera to be used in the cryogenic environment is reduced, miniaturization is improved, and manufacturing costs can be reduced.

On the other hand, if the internal temperature measured by the temperature sensor 76 after the load switch 78 is on or above the set normal temperature, the digital signal processor DSP as the controller 75 turns off the load switch 78. (Off) to prevent additional current from flowing to the preliminary load (77).

More specifically, the load switch 78 includes one terminal 78a, the other terminal 78b, and the control terminal 78c.

The preliminary load 77 includes one terminal 77a and the other terminal 77b.

One terminal 78a of the load switch 78 is connected to one output power terminal 71a of the power supply 71. The other terminal 78b of the load switch 78 is connected to one terminal 77a of the preload 77. The other terminal 77b of the preliminary load 77 is grounded. The switching control signal from the control unit 75 is input to the control terminal 78c of the load switch 78.

In the present embodiment, the preliminary load 77 is a plurality of resistors R1 to Rn connected in parallel with each other between the load switch 78 and the ground terminal. Accordingly, the life of the preload 77 may be extended due to current dispersion.

In the present embodiment, the distance (corresponding to d1 in FIG. 4) between the motors Ma, Mz, Mf, Md, Mp, Mt and the power supply unit 71 corresponds to the motors Ma, Mz, Mf, Md, It is shorter than the distance (corresponding to d2 in FIG. 4) between Mp, Mt) and main circuit portion OEC 720 to 725. FIG.

Of course, the distance between the motors Ma, Mz, Mf, Md, Mp, Mt and the power supply 71 (corresponding to d1 in FIG. 4) is equivalent to the motors Ma, Mz, Mf, Md, Mp, Mt. ) And the distance d2 between the motors Ma, Mz, Mf, Md, Mp, and Mt and the main circuits OEC 720 to 725 are the average of the distances between each and the power supply 71. It may be an average of the distances between each of Ma, Mz, Mf, Md, Mp, Mt and the center of main circuitry (OEC) 720-725.

Accordingly, the motors Ma, Mz, Mf, Md, Mp, Mt, which are poor in operating performance due to their characteristics, can be heated more quickly and sufficiently.

In the case of the camera of this embodiment, the motors Ma, Mz, Mf, Md, Mp, and Mt are the aperture motor Ma, the zoom motor Mz, the focus motor Mf, the filter motor Md, and the panning motor. Mp) and tilting motor Mt.

The diaphragm motor Ma drives the diaphragm, the zoom motor Mz drives the zoom lens, and the focus motor Mf drives the focus lens. The filter motor Md drives the optical low pass filter OLPF and the infrared cut filter IRF in the filter part. The panning motor Mp rotates the optical system OPS to the left and right. The tilting motor Mt rotates the optical system OPS up and down.

The main circuits OEC 720 to 725 include a photoelectric converter OEC, a driver 720, a correlation double sampler and analog-to-digital converter 401, a timing circuit 722, and a micro-computer ( 723, a video-signal generator 724, and an interface 725.

A photoelectric conversion unit (OEC) of a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) converts light from the optical system 73 into an electrical analog signal. Here, the digital signal processor DSP as the controller 75 controls the timing circuit 722 to control the operations of the photoelectric converter OEC and the CDS-ADC 721.

The driver 720 drives the motors Ma, Mz, Mf, Md, Mp, and Mt while operating under the control of the micro-computer 723.

The CDS-ADC 721 processes the analog video signal from the photoelectric converter (OEC) to generate a digital video signal. More specifically, the CDS-ADC 721 processes an analog video signal from the photoelectric conversion unit OEC, removes the high frequency noise, adjusts the amplitude, and converts the digital video data. This digital image data is input to a digital signal processor (DSP) as the control unit 75.

The micro-computer 723 controls the operation of the driver 720 while operating under the control of the digital signal processor DSP as the controller 75.

The video-signal generator 724 converts the digital video signal from the digital signal processor DSP as the controller 75 into a video signal Svid1 which is an analog video signal.

The digital signal processor 407 communicates with the host device (13 in FIG. 1) via the interface unit 22, and transmits the video signal Svid1 from the video-signal generator 724 to an external device, for example, a host. Send to the device. In FIG. 7, Svid denotes a video signal transmitted, Sse denotes communication signals with external sensors, and Sco denotes a communication signal with an external device, for example, a host device.

As described above, according to the control method of the electronic product, the electronic product and the camera of the embodiments according to the present invention, if the internal temperature of the electronic product is lower than the set normal temperature after the power supply is turned on, the power supply unit The preloader is additionally connected to it so that additional current flows during the preload.

For example, before the initialization mode is performed in the cryogenic environment, the additional current flowing in the preload causes the maximum current to flow in the range that the power supply can supply.

Accordingly, since the power supply generates a large amount of heat, the internal temperature of the electronic product may rise quickly.

Thus, separate heaters and three heater-temperature sensors are unnecessary as in the prior art, and many effects can be obtained accordingly. That is, the probability of failure of an electronic product or a camera used in a cryogenic environment may be reduced, miniaturization may be enhanced, and manufacturing costs may be reduced.

In addition, the life of the preload can be extended as the preloader is a plurality of resistors connected in parallel with each other.

In addition, as the distance between the motors and the power supply is shorter than the distance between the motors and the main circuit portion, motors that are poor in operating performance at low temperatures can be heated more quickly and sufficiently.

In addition, by using the heat sink and the circulation fan, the temperature of the electronic product or the camera may be increased more quickly and uniformly.

The present invention has been described above with reference to preferred embodiments. It will be understood by those skilled in the art that the present invention may be embodied in various other forms without departing from the spirit or essential characteristics thereof.

Therefore, the above-described embodiments should be considered in a descriptive sense rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and the inventions claimed by the claims and the inventions equivalent to the claimed invention are to be construed as being included in the present invention.

It is possible to use not only electronic products but also various products having a power supply unit.

21: power supply, 22: main circuit,
23: mechanical part, M1, M2: motors,
25: control unit, 26: temperature sensor,
27: spare load, 28: load switch,
51: heat sink, 52: circulation fan,
71: power supply unit, OEC, 720 to 725: main circuit unit,
73: optical system, Ma, Mz, Mf, Md, Mp, Mt: motors,
75: control unit, 76: temperature sensor,
77: preload, 78: load switch.

Claims (8)

In a method for controlling an electronic product having a power supply,
(a) measuring the internal temperature of the electronic product when the power supply unit is turned on;
(b) if the measured internal temperature is lower than the set normal temperature, additionally connect a preloader to the power supply to allow additional current to flow to the preload; And
(c) if the internal temperature measured after the additional current flows to the preload is above the set normal temperature, disconnect the preloader from the power supply to prevent additional current from flowing to the preload. Control method of electronic products, including. Power supply;
A main circuit portion operated by power from the power supply portion;
Mechanism part;
Motors providing power for movement of the mechanism;
A control unit operated by a power source from the power supply unit;
A temperature sensor measuring an internal temperature of the electronic product;
Preload; And
A load switch connected between the power supply and the preload,
In the control unit is operated by receiving power from the power supply,
If the internal temperature measured by the temperature sensor is lower than the set normal temperature, the load switch is turned on to allow an additional current to flow in the preload,
And when the internal temperature measured by the temperature sensor is higher than the set normal temperature after turning on the load switch, turning off the load switch to prevent additional current from flowing to the preliminary load. The method of claim 2,
The load switch includes one terminal, another terminal, and a control terminal;
The preloader includes one terminal and the other terminal,
The one terminal of the load switch is connected to one output power terminal of the power supply unit,
The other terminal of the load switch is connected to the one terminal of the preliminary load,
The other terminal of the preload is grounded,
The electronic product to which the switching control signal from the said control part is input into the control terminal of the said load switch. The method of claim 2, wherein the preloader,
And a plurality of resistors connected in parallel with each other between the load switch and the ground terminal. The method of claim 2,
The electronic product of which the distance between the motors and the power supply is shorter than the distance between the motors and the main circuit part. The method of claim 2,
A heat sink radiating heat of the power supply unit; And
An electronic product further comprising a circulation fan for circulating radiant heat from the heat sink. The method according to claim 6,
In the control unit is operated by receiving power from the power supply,
If the internal temperature measured by the temperature sensor is lower than the set normal temperature, the circulation fan is turned on after the load switch is turned on.
If the internal temperature measured by the temperature sensor after turning on the load switch and the circulation fan is above the set normal temperature, the electronics for turning off the load switch after turning off the load switch (Off) product. Power supply;
A main circuit portion operated by power from the power supply portion;
Optical system;
Motors providing power for movement of the optical system;
A control unit operated by a power source from the power supply unit;
A temperature sensor measuring an internal temperature of the camera;
Preload; And
A load switch connected between the power supply and the preload,
In the control unit is operated by receiving power from the power supply,
If the internal temperature measured by the temperature sensor is lower than the set normal temperature, the load switch is turned on to allow an additional current to flow in the preload,
And turning off the load switch so that no additional current flows to the preliminary load if the internal temperature measured by the temperature sensor after the load switch is on is above the set normal temperature.

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