KR100723196B1 - Satellite digital broadcasting receiver with prevention from over temperature - Google Patents

Abstract

The present invention provides a satellite digital broadcasting receiver which senses the temperature of the vehicle and cuts off the power supply of the signal processor when the temperature is not suitable for system operation, and resumes the power supply when the temperature is lower than the temperature. The purpose is.

The present invention provides a signal processor 50 for a vehicle satellite digital broadcast receiver; A temperature detector 200 that is supplied with operating power and detects a temperature of the vehicle; A controller 300 that receives the operating power and controls the power cut off or the power supply according to the detected temperature by the temperature detector 200; And a power switching unit 400 for switching on / off power supplied to the signal processor 50 according to power control of the controller 300.

According to the present invention, it is possible to prevent shortening of life and system damage due to overheating, thereby ensuring an operational reliability.

Vehicle, satellite digital broadcast receiver, over temperature, power switching

Description

SATELLITE DIGITAL BROADCASTING RECEIVER WITH PREVENTION FROM OVER TEMPERATURE

1 is a block diagram of a conventional satellite digital broadcast receiver.

2 is a block diagram of a satellite digital broadcast receiver according to the present invention;

3 is a time chart showing an example of a power supply control according to the present invention;

4 is a time chart showing another example of a power supply control according to the present invention;

5 is a flowchart illustrating a power control process of a satellite digital broadcast receiver according to the present invention;

Explanation of symbols on the main parts of the drawings

50: signal processor 51: low noise amplifier

52: tuner portion 53: BB portion

100: power supply 200: temperature detector

300: controller 400: power switching unit

500: Indicator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite digital broadcasting receiver for a vehicle, and in particular, detects the temperature of the vehicle and cuts off the power supply of the signal processor when the temperature is not suitable for system operation, and when the temperature is lower than the temperature, the power supply is cut off The present invention relates to a satellite digital broadcasting receiver having an overheating prevention function capable of preventing shortening of lifespan and system damage due to overheating, thereby ensuring operational reliability.

Recently, due to the rapid development of communication and broadcasting technologies, mobile digital broadcasting services that can enjoy multimedia services anytime and anywhere are rapidly spreading. Such mobile digital broadcasting is mainly used for mobile phones or vehicles.

1 is a block diagram of a conventional satellite digital broadcast receiver.

The conventional satellite digital broadcasting receiver shown in FIG. 1 includes a power supply unit 10 for supplying operating power, a controller 20 for receiving the operating power, and controlling reception of satellite digital broadcasting, and supplying the operating power. A low noise amplifier 30 for amplifying the satellite broadcast signal from the satellite antenna ANT with low noise and a tuner for receiving the operating power and converting the satellite broadcast signal from the low noise amplifier 30 into a baseband signal. And a BB unit 50 which receives the operation power and processes the base bend signal from the tuner unit 40.

The satellite digital broadcast receiver as described above may be installed outside the vehicle to improve reception sensitivity, or installed inside the vehicle to avoid the influence of external environment such as snow, rain, and wind. In this way, satellite digital broadcasting When the receiver is mounted in a vehicle, the satellite digital broadcast can be received by the vehicle.

However, when such a satellite digital broadcast receiver is mounted on a mobile phone, there is no serious problem in operational reliability since the environmental change such as temperature is not severe. However, when the satellite digital broadcast receiver is mounted on a vehicle, Since the temperature rises excessively, for example, about 150 degrees, a circuit or a device of the system may be fatally damaged by such an overheating, which may adversely affect the lifespan of the satellite digital broadcasting receiver.

The present invention has been proposed to solve the above problems, and an object thereof is to detect a temperature of a vehicle in a vehicle satellite digital broadcasting receiver, and to supply power to a signal processor when an over temperature is not suitable for system operation. By shutting off and resuming the interrupted power supply when the temperature is below the over temperature, it is possible to shorten the lifespan caused by the over temperature and damage the system, thereby providing a satellite digital broadcasting receiver having an over temperature protection function that can ensure operational reliability. It is.

In order to achieve the above object of the present invention, the satellite digital broadcast receiver of the present invention, the signal processor of the vehicle satellite digital broadcast receiver; A temperature detector for detecting a temperature of the vehicle; A controller for controlling the power cut off or the power supply according to the detected temperature by the temperature detector; And a power switching unit for switching on / off power supplied to the signal processor according to power control of the controller.

The receiver may further include an indicator indicating a power down state or a power supply state to the signal processor under the control of the controller.

The receiver further includes a power supply unit for supplying various operating powers required for the signal processor, the temperature detector, and the controller.

The signal processor may include: a low noise amplifier receiving operational power through the power switching unit and amplifying a satellite broadcast signal from a satellite antenna with low noise; A tuner unit which receives operating power through the power switching unit and converts the satellite broadcast signal from the low noise amplifier into a base band signal; And a BB unit receiving operating power through the power switching unit and processing a base bend signal from the tuner unit.

The controller is configured to compare the detection temperature by the temperature detector with a preset first reference temperature and to control the power switching unit to supply power to the signal processor when the detection temperature is lower than the first reference temperature. It is characterized by.

The controller may be configured to cut off the power of the signal processor by controlling the power switching unit when the detection temperature is higher than the first reference temperature by comparing the detection temperature by the temperature detector with a preset first reference temperature. It features.

The controller compares a detection temperature of the temperature detector with a preset first reference temperature, and controls the power switching unit if the detection temperature is higher than the first reference temperature for a preset time. Characterized in that the power is cut off the signal processor.

The controller may compare the detection temperature by the temperature detector with a preset second reference temperature while the power of the signal processor is turned off, and if the detection temperature is lower than the second reference temperature, the power switching unit may be used. The controller is configured to supply power to the signal processor again.

The second reference temperature is set to be equal to or less than the first reference temperature.

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Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

2 is a block diagram of a satellite digital broadcast receiver according to the present invention.

Referring to FIG. 2, the satellite digital broadcasting receiver of the present invention includes a signal processor 50 of a vehicle satellite digital broadcasting receiver, a temperature detector 200 for detecting a temperature of a vehicle, and a detection by the temperature detector 200. Controller 300 for controlling the power cut or power supply according to the temperature, and the power switching unit 400 for switching on / off the power supplied to the signal processor 50 according to the power control of the controller 300 And an indicator 500 for displaying a power cutoff state or a power supply state to the signal processor 50 under the control of the controller 300.

In addition, the satellite digital broadcast receiver of the present invention includes a power supply unit 100 for supplying various operating power required for the signal processor 50, the temperature detector 200, and the controller 300.

Here, the controller 300 for controlling the power supply unit is implemented as a microprocessor, which is more resistant to temperature than the signal processor 50. For example, other ICs included in the signal processor 50 are operable up to approximately 80 degrees Celsius, and the controller 300 is operable up to approximately 125 degrees Celsius.

The signal processor 50 is supplied with operating power through the power switch 400, a low noise amplifier 51 for amplifying the satellite broadcast signal from the satellite antenna (ANT) with low noise, and the power switch ( 400 is supplied with operating power, the tuner unit 52 for converting the satellite broadcast signal from the low noise amplifier 51 into a baseband signal, and receiving the operating power through the power switching unit 400, And a BB unit 53 for processing the base bend signal from the tuner unit 52.

The controller 300 compares the detected temperature by the temperature detector 200 with a preset first reference temperature Tref1 and switches the power when the detected temperature is lower than the first reference temperature Tref1. The control unit 400 may be configured to supply power to the signal processor 50.

The controller 300 compares the detection temperature by the temperature detector 200 with a preset first reference temperature Tref1, and when the detection temperature is higher than the first reference temperature Tref1, the power switching unit. The control unit 400 may be configured to cut off the power of the signal processor 50.

In addition, the controller 300 compares the detection temperature by the temperature detector 200 with a preset first reference temperature Tref1, so that the detection temperature is higher than the first reference temperature Tref1. If the predetermined time period Ts is maintained, the power switching unit 400 may be controlled to cut off the power of the signal processor 50.

The controller 300 compares the detection temperature by the temperature detector 200 with a preset second reference temperature Tref2 in a state where the power of the signal processor 50 is cut off, so that the detection temperature is increased. When the temperature is lower than the second reference temperature Tref2, the power switch 400 may be controlled to supply the power of the signal processor 50 again.

Here, the second reference temperature Tref2 is a determination temperature for resuming the operation of the signal processor 50. The second reference temperature Tref2 is set to be equal to or less than the first reference temperature Tref1 for stable operation of the signal processor 50. It is preferable.

3 is a time chart showing an example of the power control according to the present invention, Figure 4 is a time chart showing another example of the power control according to the present invention.

3 and 4, Tref1 is a first reference temperature preset for overtemperature determination in the controller 300, Td is a detection temperature of the temperature detector 200, and Ts is greater than that in the controller 300. It is the time that overheating lasts to determine a certain overheating condition. In addition, Tref2 is a second reference temperature set in advance to determine a point where the controller 300 falls from the over temperature state to the normal temperature state.

5 is a flowchart illustrating a power control process of the satellite digital broadcast receiver according to the present invention.

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

The satellite digital broadcasting receiver of the present invention detects the temperature of the vehicle while operating in a vehicle and temporarily cuts off the power supplied to the signal processor when the temperature of the vehicle is excessively high (over temperature) which is not suitable for the operation of the receiver. Subsequently, when the temperature of the vehicle becomes lower than the over temperature, power supply to the signal processor is resumed. Accordingly, the satellite digital broadcast receiver mounted on the vehicle may be protected from overheating of the vehicle.

Referring to FIGS. 2 to 4, the operation of the satellite digital broadcast receiver of the present invention will be described first. First, when power is supplied to the satellite digital broadcast receiver of the present invention, the power supply unit 100 performs the signal processor 50 and the temperature. Each operating power required for the detector 200, the controller 300, and the indicator 500 is supplied. Accordingly, the satellite digital broadcasting receiver of the present invention performs the satellite signal reception operation by the operation power source.

In this case, the signal processor 50 included in the satellite digital broadcasting receiver of the present invention processes a signal from the satellite antenna ANT. Specifically, the low noise amplifier 51 of the signal processor 50 receives operating power through the power switching unit 400, amplifies the satellite broadcast signal from the satellite antenna ANT with low noise, and tuner unit. The tuner unit 52 receives the operating power through the power switching unit 400, converts the satellite broadcast signal from the low noise amplifier 51 into a baseband signal, and converts the signal into a baseband signal. 53). In addition, the BB unit 53 receives operating power through the power switching unit 400 and processes the base bend signal from the tuner unit 52.

Here, the power switching unit 400 is turned on when the receiver is powered on, and then performs an on / off operation under the control of the controller 300.

Referring to FIG. 2, while performing the signal processing as described above, the temperature detector 200 of the present invention receives operating power from the power supply unit 100 and detects a temperature of a vehicle to the controller 300. to provide.

At this time, the controller 300 is supplied with operating power from the power supply unit 100, and controls the power cut off or power supply according to the detected temperature by the temperature detector 200, power control by the controller 300 The process will be described with reference to FIGS. 2 to 5.

Referring to FIG. 5, first, the controller 300 illustrated in FIG. 2 detects a temperature of a vehicle through the temperature detector 200 (S310 of FIG. 5).

Next, the controller 300 compares the detection temperature Td by the temperature detector 200 with a preset first reference temperature Tref1, so that the detection temperature Td is equal to the first reference temperature ( If it is lower than Tref1), the switch on (on) is controlled by the power switching unit 400, and accordingly, the power switching unit 400 continues to be switched on to supply operating power to the signal processor 50. Keep feeding. At this time, the controller 300 continuously monitors the temperature of the vehicle through the temperature detector 200 while performing a signal reception process (S320 of FIG. 5).

On the other hand, the controller 300 compares the detection temperature Td by the temperature detector 200 with a preset first reference temperature Tref1, so that the detection temperature Td is equal to the first reference temperature ( If higher than Tref1), the switch-off is controlled to the power switch 400, and accordingly, the power switch 400 cuts off the power of the signal processor 50 (S330 of FIG. 5). Accordingly, the signal processor 50 may not perform the processing of the received signal.

Here, the first reference temperature tref1 is set according to the environment of the vehicle and the temperature tolerance of the satellite digital broadcast receiver. For example, the first reference temperature Tref1 may be set to about 100 degrees, in this case The satellite digital broadcasting receiver of the present invention determines that the temperature is over 100 degrees.

Next, after the power supply of the signal processor 50 is cut off, the controller 300 displays the power off state on the screen by the indicator 500 so that the operation of the signal processor 50 due to overheating of the vehicle is performed. The driver notifies that the driver cannot stop satellite broadcast reception due to the stop (S340 of FIG. 5).

Meanwhile, referring to FIGS. 2 and 3, a detailed operation example of the controller 300 will be described. The controller 300 may include a detection temperature Td by the temperature detector 200 and a first reference set in advance. Comparing the temperature Tref1, if the detected temperature Td is higher than the first reference temperature Tref1 for a preset time Ts, the power is switched by recognizing a more reliable overtemperature state of the vehicle. The power of the signal processor 50 may be cut by controlling the unit 400.

Here, the time Ts prevents on / off switching of the power supply to prevent overheating of the vehicle more reliably when the temperature of the vehicle fluctuates up and down based on the first reference temperature Tref1 for a relatively short time. It is set to the time for detection.

As described above, when the temperature of the vehicle falls below an over temperature in a state where the power of the signal processor 50 is cut off by the power switching unit 400, the controller 300 causes the signal processor 50 to operate. Control process to supply the operating power again.

Subsequently, the controller 300 switches off the power switch 400 to cut off the power of the signal processor 50, and then measures the temperature of the vehicle on which the satellite digital broadcast receiver of the present invention is mounted. Through the continuous detection to monitor the temperature state of the vehicle (S350 of Figure 5).

Next, the controller 300 compares the detected temperature Td detected by the temperature detector 200 with a second reference temperature Tref2 set in advance, so that the detected temperature Td is set in advance. When the temperature is higher than the reference temperature Tref2, the temperature detection process is repeatedly performed (S360 of FIG. 5).

Here, the second reference temperature (Tref2) may be set to be the same as the first reference temperature (Tref1), but in order to enable the receiver to operate at a more stable low temperature, the second reference temperature (Tref2) ) Is preferably set below the first reference temperature Tref1.

Next, referring to FIGS. 2 and 4, the controller 300 switches the power supply when the detection temperature Td detected by the temperature detector 200 is lower than a preset second reference temperature Tref2. By switching on the unit 400, the power of the signal processor 50 is supplied again (S370 of FIG. 5).

That is, the controller 300 compares the detection temperature Td by the temperature detector 200 with the preset second reference temperature Tref2 while the power of the signal processor 50 is cut off. When the detection temperature Td is lower than the second reference temperature Tref2, the power switch 400 is switched on to supply the power of the signal processor 50 again to supply the power to the signal processor 50. To perform signal processing.

At this time, the display 500 notifies the user of the resumption of operation by displaying a power off state on the screen after the power supply step under the control of the controller 300 (S380 of FIG. 5). This process is repeatedly performed until the power of the receiver is completely shut off and the system is terminated (S390 of FIG. 5).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, but is defined by the claims, and the apparatus of the present invention may be substituted, modified, and modified in various ways without departing from the spirit of the present invention. It is apparent to those skilled in the art that modifications are possible.

According to the present invention as described above, in the vehicle satellite digital broadcasting receiver, the temperature of the vehicle is sensed to cut off the power supply of the signal processor in case of over temperature which is not suitable for system operation, and cut off when it is below the over temperature By resuming the previously supplied power supply, it is possible to prevent shortening of lifespan and system damage due to overheating, thereby ensuring operational reliability.

Claims (14)

A signal processor of a vehicle satellite digital broadcasting receiver; A temperature detector for detecting a temperature of the vehicle; A controller for controlling the power cut off or the power supply according to the detected temperature by the temperature detector; And A power switching unit for switching the power supplied to the signal processor on / off in accordance with the power control of the controller Satellite digital broadcast receiver having a temperature protection function. The method of claim 1, wherein the receiver, And an indicator for indicating a power off state or a power supply state to the signal processor under the control of the controller. The method of claim 1, wherein the receiver, And a power supply unit for supplying various operating powers required for the signal processor, the temperature detector, and the controller. The method of claim 1, wherein the signal processor A low noise amplifier receiving operational power through the power switching unit and amplifying the satellite broadcast signal from the satellite antenna with low noise; A tuner unit which receives operating power through the power switching unit and converts the satellite broadcast signal from the low noise amplifier into a base band signal; And A BB unit receiving operating power through the power switching unit and processing a base bend signal from the tuner unit Satellite digital broadcasting receiver having a temperature protection function, comprising a. The method of claim 1, wherein the controller And comparing the detection temperature by the temperature detector with a preset first reference temperature, and when the detection temperature is lower than the first reference temperature, controlling the power switching unit to supply power to the signal processor. Satellite digital broadcast receiver with overtemperature protection. The method of claim 5, wherein the controller Compared with the detection temperature by the temperature detector and the first reference temperature set in advance, if the detection temperature is higher than the first reference temperature, the over temperature, characterized in that to control the power switch to cut off the power of the signal processor Satellite digital broadcast receiver with protection. The method of claim 5, wherein the controller The detection temperature of the signal processor is controlled by comparing the detection temperature by the temperature detector with a preset first reference temperature, and when the detection temperature is higher than the first reference temperature for a preset time. Satellite digital broadcast receiver having a temperature protection function, characterized in that the power is cut off. The method of claim 6 or 7, wherein the controller In a state where the power of the signal processor is turned off, the detection temperature by the temperature detector is compared with a preset second reference temperature. When the detection temperature is lower than the second reference temperature, the power switching unit is controlled to control the signal. Satellite digital broadcast receiver having a temperature protection function, characterized in that the power supply to the processor again. The method of claim 8, wherein the second reference temperature is And a satellite digital broadcasting receiver having an overtemperature protection function set to be equal to or less than the first reference temperature. delete delete delete delete delete

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