KR19980076437A - Outside temperature display of car - Google Patents

Abstract

The present invention relates to an outdoor temperature display device of a vehicle, and in particular, a temperature sensor (1) installed behind a bumper or a radiator grille of an automobile to detect the outdoor temperature as an electrical signal; An A / D converter (2) for converting the outside air temperature output from the temperature sensor (1) into an analog signal into a digital signal; The external air temperature continuously input through the A / D converter 2 is continuously input to the display driving unit 6 and the previous temperature storage unit 5, and at the same time, it detects whether the outdoor air temperature rapidly rises within a predetermined time period. A microcomputer 3 for outputting the previous temperature to the display driver 6 when it is determined that the outdoor temperature is rapidly increased within the time; A ROM 4 which stores various programs necessary for controlling the system; A previous temperature storage unit (5) which stores the previous outside temperature under the control of the microcomputer (3) and outputs it when the microcomputer requests it; If the temperature of the outside air is rapidly increased in a short time due to the vehicle's stop by the display driving unit 6 which displays the temperature output from the microcomputer 3 numerically on the display 7, the temperature before the sudden rise Is displayed on the liquid crystal display, so that the driver can obtain the actual outside temperature and approximate temperature information even when the vehicle is stopped.

Description

Outside temperature display of car

The present invention relates to an outdoor air temperature display device of a vehicle, and more particularly, when the outdoor air temperature detected by the temperature sensor rapidly increases within a short time when the vehicle is stopped, the temperature before the sudden rise is displayed on the liquid crystal display. It is invented so that the driver can obtain the actual outside temperature and the approximate temperature information by marking on.

Some conventional cars are equipped with a temperature indicator (i.e., liquid crystal display) on the car heater control panel or the instrument panel so that the driver can recognize the outside temperature, and the temperature sensor for detecting the outside temperature is located behind the bumper of the car. It is a configuration installed behind the radiator grille.

However, in the above configuration, since the temperature sensor for detecting the temperature of the outside air is installed behind the bumper or the radiator grille of the vehicle, the temperature in the engine room does not affect the temperature sensor when the vehicle is traveling, so the external temperature is accurately detected. However, when stopping, the air circulation in the engine room is not made at all, so the temperature rises rapidly as shown in FIG. 3 (A) and the temperature detected by the temperature sensor has a higher temperature value than the actual outside temperature. In addition, the temperature shown in the temperature is higher than the actual outside temperature there was a problem that the reliability is lowered.

1 is a block diagram of an apparatus of the present invention.

2 is a flowchart for explaining an operating state of the apparatus of the present invention.

Figure 3 (A) is a temperature graph displayed on the display by a conventional outdoor temperature display device.

(B) is a temperature graph displayed on a display by the apparatus of the present invention.

Explanation of symbols for main parts in the drawings

1: Temperature sensor 2: A / D converter

3: micom 4: ROM

5: previous temperature storage unit 6: display driving unit

7; display

The above object of the present invention, the temperature sensor is installed behind the bumper or the radiator grille of the vehicle and detects the outside temperature as an electrical signal; An A / D converter for converting the outside air temperature output from the temperature sensor as an analog signal into a digital signal; If the outside temperature is continuously inputted through the A / D converter and output to the display driving unit and the previous temperature storage unit, the controller detects whether the outside temperature is rapidly increased within a predetermined time, and if the outside temperature is rapidly increased within a relatively short time. A microcomputer for outputting a previous temperature to the display driver; A ROM for storing various programs necessary for controlling the system; A previous temperature storage unit for storing the previous outside temperature under the control of the microcomputer and outputting the microcomputer upon request of the microcomputer; This can be achieved by configuring the display driver to display the temperature output from the microcomputer numerically on the display.

Therefore, when the car stops, the heat of the engine room is transmitted to the temperature sensor, and if it is recognized that the temperature of the outside air is rapidly increased in a short time, the temperature before the sudden increase is displayed on the liquid crystal display, so the temperature information of the actual outside temperature and the approximate value is The driver can get it.

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

1 shows a block diagram of an apparatus of the present invention, and FIG. 2 shows a flowchart for explaining an operation state of the apparatus of the present invention.

According to this, a temperature sensor (1) is installed behind the bumper or the radiator grille of the vehicle and detects the outside temperature as an electrical signal; An A / D converter (2) for converting the outside air temperature output from the temperature sensor (1) into an analog signal into a digital signal; The external air temperature continuously input through the A / D converter 2 is continuously input to the display driving unit 6 and the previous temperature storage unit 5, and at the same time, it detects whether the outdoor air temperature rapidly rises within a predetermined time period. A microcomputer 3 for outputting the previous temperature to the display driver 6 when it is determined that the outdoor temperature is rapidly increased within the time; A ROM 4 which stores various programs necessary for controlling the system; A previous temperature storage unit (5) which stores the previous outside temperature under the control of the microcomputer (3) and outputs it when the microcomputer requests it; It is characterized in that it consists of a display drive unit 6 for displaying the temperature output from the microcomputer (3) on the display (7).

The operation state of the apparatus of the present invention having such a configuration will be described below with reference to FIGS. 2 and 3A (B).

First, the temperature sensor 1 installed behind the bumper or the radiator grille of the vehicle continuously detects the outside temperature as an analog signal and outputs the analog signal to the A / D converter 2 when the vehicle is driven and stopped. ) Converts the analog outside temperature detection signal into a digital signal and outputs it to the microcomputer 3.

Therefore, the microcomputer 3 receives the support of the system control program stored in the ROM 4, recognizes the outside temperature, and outputs the result to the display driver 6 and the previous temperature storage 5. The current outside air temperature is displayed on the liquid crystal display 7 provided on the instrument panel, and the outside air temperature is stored in the previous temperature storage section 5.

Therefore, the driver can easily recognize the current temperature of the outside air by looking at the number appearing on the liquid crystal display 7 and use it as information necessary for controlling various electronic devices of the vehicle.

On the other hand, the microcomputer 3 outputs the outside temperature to the display driver 6 and the previous temperature storage unit 5, and simultaneously detects whether the outside temperature is rapidly increased within a predetermined time. If does not rise rapidly, the vehicle is recognized as driving and the above operation is repeated. If the detected temperature rises rapidly (about 10 ° C) within a short time (t3 position in Fig. 3B), the vehicle is stopped. The temperature before the sudden rise stored in the previous temperature storage unit 5 is recognized as being present and is displayed on the display 7 via the display drive unit 6.

Therefore, even if the vehicle is in a stopped state, the display 7 displays an approximate value of the actual outside temperature, so that the driver continues to use it as information necessary for controlling the various electrical appliances of the vehicle (parts that need to be driven in winter). It can be.

On the other hand, the microcomputer 3 determines that the outside temperature is rapidly rising within a short time, and displays the previous outside temperature on the display 7 for the first time. Likewise, as time (t1, t2, t3) flows, the delay action increases by about 0.3 ° C.

As described above, according to the present invention, when the vehicle is stopped, the heat of the engine room is transmitted to the temperature sensor so that the temperature before the sudden increase is displayed on the liquid crystal display if it is determined that the temperature of the outside air is rapidly increased in a short time. Thus, the driver can obtain the actual outside temperature and approximate temperature information even when the vehicle is stopped.

It is an object of the present invention to provide an outdoor temperature display device for a vehicle which can give a confidence to a driver by accurately detecting and displaying the outdoor temperature regardless of the heat of the engine room even when the vehicle is stopped.

Claims (1)

A temperature sensor 1 installed behind the bumper or the radiator grille of the vehicle and detecting the outside temperature as an electrical signal; An A / D converter (2) for converting the outside air temperature output from the temperature sensor (1) into an analog signal into a digital signal; The external air temperature continuously input through the A / D converter 2 is continuously input to the display driving unit 6 and the previous temperature storage unit 5, and at the same time, it detects whether the outdoor air temperature rapidly rises within a predetermined time period. A microcomputer 3 for outputting the previous temperature to the display driver 6 when it is determined that the outdoor temperature is rapidly increased within the time; A ROM 4 which stores various programs necessary for controlling the system; A previous temperature storage unit (5) which stores the previous outside temperature under the control of the microcomputer (3) and outputs it when the microcomputer requests it; The outside air temperature display device of a vehicle, characterized in that consisting of a display drive unit (6) for displaying the temperature output from the microcomputer (3) on the display (7).