KR20130059683A

KR20130059683A - Deffoging system of construction machinery

Info

Publication number: KR20130059683A
Application number: KR1020110125780A
Authority: KR
Inventors: 정운용; 하자용; 윤태현
Original assignee: 현대중공업 주식회사
Priority date: 2011-11-29
Filing date: 2011-11-29
Publication date: 2013-06-07

Abstract

PURPOSE: A defogging system for construction equipment is provided to increase stability and work efficiency by always securing a clear view while a user operates the construction equipment. CONSTITUTION: A defogging system for construction equipment comprises an auto-defogging sensor(130), an internal temperature sensor(150), and a control part(170). The auto-defogging sensor is installed on a windshield of a cab of the construction equipment to detect the surface temperature of the windshield and the internal humidity of the cab. The internal temperature sensor is installed inside the cab to detect the internal temperature of the cab. The control part is connected to the auto-defogging sensor and the internal temperature sensor. When the difference between the surface temperature and a dew point is less than a threshold value, the control part operates an air conditioner(190) to defog the windshield. [Reference numerals] (130) Auto-defogging sensor; (150) Internal temperature sensor; (170) Control part; (190) Air conditioner

Description

Defogging system of construction equipment {DEFFOGING SYSTEM OF CONSTRUCTION MACHINERY}

The present invention relates to a defogging system of construction equipment, and more particularly, by automatically operating the air conditioner before the occurrence of the fog on the front glass of the construction equipment to prevent the fog, so that the user is always running and operating the construction equipment It relates to a defogging system of construction equipment that can secure visibility and increase the stability and efficiency of work.

Modern construction heavy equipment has been developed with a variety of equipment according to the purpose of use, and the safety of the worker and the surrounding environment is emerging as an important matter depending on the use environment. In particular, safety accidents are frequently caused by environmental influences. When working in indoor / outdoor temperature difference and rainfall environment, there was a situation that the accident and work efficiency decreased due to the limitation of the working field due to the internal / external fog of the glass surface of CAB due to the temperature difference between indoor and outdoor.

On the other hand, the anti-fog system in the construction equipment currently in production, after the operator stops the current operation to remove the mist generated in the front surface of the CAB glass surface, the operation must be resumed. Otherwise, a situation may occur in which the work is continued in a narrow field of view, which may reduce work efficiency or cause an accident due to a narrow field of view.

Utility Model Publication No. 2019880009749

The present invention has been made to solve the above problems, an object of the present invention is to automatically operate the air conditioner before the occurrence of the fog on the front glass of the construction equipment to prevent the fog, so that the user during the operation and operation of the construction equipment It is to provide a defogging system of construction equipment that can always secure visibility to increase the stability and efficiency of work.

Defogging system of construction equipment according to the present invention for solving the above problems is installed on the glass surface of the CAB of the construction equipment, the auto defogging sensor for detecting the surface temperature of the glass surface and the humidity inside the CAB; An internal temperature sensor installed inside the CAB to sense an internal temperature of the CAB; And the dew point temperature of the glass surface is calculated based on the detected surface temperature, humidity, and internal temperature, and then the difference between the surface temperature and the dew point temperature is critical. If less than the value, characterized in that it comprises a control unit for operating the air conditioner to remove the fog inside the glass surface.

In this case, the temperature defogging sensor is preferably wrapped with a protective cover so as to exclude the influence of the temperature inside the CAB.

In addition, the air conditioner is set to the initial temperature, and the control unit may be operated to return to the initial temperature after the air conditioner to remove the mist inside the glass surface.

According to the present invention, by automatically operating the air conditioner before the occurrence of steaming on the front glass of construction equipment to prevent steaming, the user can always secure the field of view during the operation and operation of construction equipment to increase the stability and work efficiency have.

1 is a perspective view of a CAB installed a defogging system of construction equipment according to an embodiment of the present invention.
Figure 2 is a block diagram showing a defogging system of construction equipment according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the defogging system of construction equipment according to a preferred embodiment. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

In addition, the size of each component in the drawings may be exaggerated for the sake of explanation and does not mean a size actually applied.

1 is a perspective view of a CAB installed a defogging system of construction equipment according to an embodiment of the present invention. 1, an auto defogging sensor 130 and an internal temperature sensor 150 are installed in a CAB 110 in which a defogging system of construction equipment according to an exemplary embodiment of the present invention is installed. More specifically, the CAB 110 is a space in the construction equipment, the driver is configured to ride on and drive the construction equipment. An auto defogging sensor 130 is attached to the inner surface of the front glass of this CAB 110.

The auto defogging sensor 130 is preferably installed at the corner of the front glass so as not to obstruct the driver's field of view as shown. Since the auto defogging sensor 130 is attached to the inner surface of the glass surface, the auto defogging sensor 130 may sense the temperature outside the CAB 110 and the humidity inside the CAB 110. In addition, the auto defogging sensor 130 should not be obstructed by measuring the surface temperature of the glass surface by the internal temperature of the CAB 110. Accordingly, the auto defogging sensor 130 is preferably covered with a heat shield such as an insulating material, except for the surface attached to the glass surface, the contact surface inside the CAB 110. However, a constant opening space for detecting internal humidity should be secured. In addition, the internal temperature sensor 150 is installed inside the CAB 110. In addition, the auto defogging sensor 130 further has the function of a humidity sensor that senses the internal humidity of the CAB 110. The humidity sensor is a generic term for a sensor used to detect humidity by using various phenomena (physical and chemical phenomena) related to moisture in the air. Humidity sensors use variations in electrical resistance and capacitance caused by absorption into porous ceramics or polymer membranes, or changes in the resonant frequency of the vibrator due to changes in the weight of absorbing materials placed on the vibrator. Developed. Specific humidity sensors include wet and dry hygrometer, hair hygrometer, lithium chloride humidity sensor, electrolytic humidity sensor (P2O5 humidity sensor), polymer membrane humidity sensor, quartz vibration type humidity sensor, aluminum oxide humidity sensor, ceramic humidity sensor, thermistor humidity sensor, microwave humidity sensor. , Dew condensation sensor and dew point sensor. An IC humidity sensor that integrates a humidity sensor element and a signal processing electronic circuit has also been developed. As such, the auto defogging sensor 110 simultaneously performs two functions, a temperature sensor and a humidity sensor.

Internal temperature sensor 150 may be installed in a suitable portion inside CAB 110 to measure the internal temperature of CAB 110. The internal temperature sensor 150 generally means INCAR SENSOR (internal temperature sensor). INCAR SENSOR is a sensor that senses the vehicle's internal temperature and provides the detected contents to A / CON CONTROL UNIT and is used for A / CON control.

Meanwhile, although not shown in the drawing, a control unit connected to the auto defogging sensor 130 and the internal temperature sensor 150 to operate the air conditioner is installed in the CAB 110. However, the control unit may be installed in the construction equipment outside the CAB 110 according to the design convenience. The control unit operates the air conditioner (not shown) to prevent the fog installed on the glass surface. Details thereof will be described with reference to FIG. 2.

Figure 2 is a block diagram showing a defogging system of construction equipment according to an embodiment of the present invention. 2, the defogging system of construction equipment according to an exemplary embodiment of the present invention includes a temperature defogging sensor 130, an internal temperature sensor 150, a controller 170, and an air conditioner 190. . Temperature defogging sensor 130 senses the temperature of the glass surface of CAB 110 and the internal humidity of CAB 110. Here, the temperature of the glass surface may be interpreted as the temperature outside the CAB 110. It is essential to measure the external temperature of the CAB 110 because the steam generated on the glass surface depends on the difference between the external temperature and the internal temperature of the CAB 110 and the internal humidity. The data on the surface temperature and the internal humidity of the glass surface detected by the temperature defogging sensor 130 are transmitted to the controller 170 through a wired harness, but are not necessarily limited thereto. Any wired or wireless data transmission technology can be applied as needed. In addition, the internal temperature sensor 150 senses the internal temperature of the CAB 110. Similarly, the detected data on the internal temperature may be transmitted to the controller 170 through a wire harness, or a wired or wireless data transmission technique according to the prior art may be appropriately transmitted as necessary.

The controller 170 receives data on the surface temperature (ie, external temperature), internal humidity, and internal temperature of the glass surface measured from the auto defogging sensor 130 and the internal temperature sensor 150 to calculate the dew point. The controller 170 calculates the dew point of the glass surface according to the temperature difference and the internal humidity according to the difference between the internal temperature and the external temperature. In addition, the controller 170 operates the air conditioner 190 to prevent the fog when the surface temperature of the glass surface measured by the auto defogging sensor 130 reaches the calculated dew point temperature. In this case, the controller 170 may adjust the conditions for operating the air conditioner 190. For example, the controller 170 may prevent the fog in advance by operating when the surface temperature of the glass surface reaches a predetermined temperature difference from the dew point. In addition, when the driver has an initial temperature set in the air conditioner 190, the controller 170 may control the air conditioner 190 to return to the initial temperature after the fog is removed. Accordingly, by preventing the airfog by automatically operating the air conditioner before the occurrence of the fog on the front glass of the construction equipment, the user can always secure the field of view during the operation and operation of the construction equipment to increase the stability and efficiency of work.

In the detailed description of the present invention as described above, specific embodiments have been described. However, various modifications are possible within the scope of the present invention. The technical spirit of the present invention should not be limited to the above-described embodiments of the present invention, but should be determined by the claims and equivalents thereof.

110: CAB
130: auto defogging sensor
150: internal temperature sensor
170:
190: air conditioning

Claims

An auto defogging sensor installed on a glass surface of a CAB of construction equipment and detecting a surface temperature of the glass surface and a humidity inside the CAB;
An internal temperature sensor installed inside the CAB to sense an internal temperature of the CAB; And
The dew point temperature of the glass surface is calculated based on the detected surface temperature, humidity, and internal temperature, and then the difference between the surface temperature and the dew point temperature is a threshold value. In the following case, the defogging system of construction equipment comprising a control unit for operating the air conditioner to remove the defogging inside the glass surface.

The method of claim 1,
The temperature defogging sensor is a defogging system of construction equipment, characterized in that the protective cover is wrapped so as to exclude the influence of the temperature inside the CAB.

The method of claim 2,
The air conditioner is set to the initial temperature, the control unit is the airfoil removal system of the construction equipment, characterized in that to operate to return to the initial temperature after removing the mist inside the glass surface.