KR-20260067120-A - Gas Detection Apparatus with Power Management Capability

Abstract

The present invention relates to a gas detection device capable of power management. A gas detection device capable of power management according to an embodiment of the present invention comprises: a gas detection unit that detects gas using a laser; a power supply unit that receives external power and supplies power to the gas detection unit; a power management unit connected to the gas detection unit and the power supply unit to turn the operation of the gas detection unit on and off; and a control unit that controls the power management unit to turn on the gas detection unit after a preset time has elapsed when an on signal is input from the power supply unit, and to turn off the gas detection unit after a preset time has elapsed when an off signal is input from the power supply unit.

Inventors

• 윤명섭
• 박영진

Assignees

• 선두전자(주)

Dates

Publication Date

20260512

Application Date

20241105

Claims (5)

1. Gas detection unit that detects gas using a laser; A power supply unit that receives external power and supplies power to the gas detection unit; A power management unit connected to the gas detection unit and the power supply unit to turn the operation of the gas detection unit on and off; and A gas detection device capable of power management, comprising a control unit that controls the power management unit to turn on the gas detection unit after a preset time has elapsed when an on signal is input from the power supply unit, and to turn off the gas detection unit after a preset time has elapsed when an off signal is input from the power supply unit.
2. In paragraph 1, The above power management unit is, A first relay for switching the supply or interruption of the power from the power supply unit to the gas detection unit; and A gas detection device capable of power management, comprising a second relay that switches the operation of the above gas detection unit on/off.
3. In paragraph 2, The above control unit is, A gas detection device capable of power management that turns on the first relay upon the above-mentioned on signal, turns on the second relay for a certain period of time after a preset time and then turns it off, turns on the second relay for a certain period of time after the above-mentioned off signal and then turns off the first relay after a preset time has elapsed.
4. In paragraph 3, The above control unit is, A gas detection device capable of power management that, after a preset time, determines whether the voltage of the gas detection unit and the power supply unit is the same, and outputs a warning signal if they are different.
5. In any one of paragraphs 1 through 4, The above gas detection unit is, A gas detection device capable of power management that receives a first laser, which is output from a laser light source, reflected through a beam splitter, and passed through a standard cell for calibration, and a second laser, which is reflected from a gas detection target area, through a single light receiving sensor.

Description

Gas Detection Apparatus with Power Management Capability The present invention relates to a gas detection device capable of power management, and more specifically, discloses a technology for managing the on/off of the power of a gas detector that detects gas using a laser. Various gases used in industrial settings are critical factors for process quality and safety; leaks can not only be harmful to the human body but also cause explosions and air pollution. To address these issues, remote gas leak detection using laser gas detectors is widely employed. However, laser gas detectors are sensitive to changes in temperature, voltage, and current, which can lead to a decrease in precision during prolonged use. While precision has traditionally been maintained through periodic calibration, this process is complex and time-consuming. Among the prior art, Korean Published Patent No. 10-2024-0102383 relates to a portable gas detection sensor using a laser, comprising a plurality of light sources that irradiate light having a preset wavelength band and a preset frequency to detect a preset component, a light receiving unit that receives the light sources, an optical system that causes the light irradiated from each light source to pass through the detection space and be incident on each light receiving unit, a sensor unit that senses the temperature and pressure within the detection space, and a control unit that analyzes whether a gas component to be detected exists within the detection space based on the amount of light received by each light receiving unit and the sensing value of the sensor unit. However, the above-mentioned conventional technology has limitations in that it cannot prevent circuit damage, etc., when the laser sensor is suddenly turned on and off. FIG. 1 is a configuration diagram of a gas detection device according to an embodiment of the present invention. FIGS. 2 and FIGS. 3 are example diagrams for explaining calibration in the gas detection unit of the gas detection device according to FIG. 1. Figure 4 is a graph of the measured values according to the calibration of the gas detection unit according to Figures 2 and 3. Figure 5 is a detailed configuration diagram of the power management unit of the gas detection device according to Figure 1. Figure 6 is a flowchart of the power management unit's on mode according to Figure 5. Figure 7 is a flowchart of the off mode of the power management unit according to Figure 5. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The terms used are selected considering their functions in the embodiments, and their meanings may vary depending on the intent of the user or operator, or case law. Therefore, the meaning of the terms used in the embodiments described below shall follow the definitions specifically defined in this specification if such definitions exist, and shall be interpreted according to the meaning generally recognized by those skilled in the art if no specific definitions exist. FIG. 1 is a configuration diagram of a gas detection device according to an embodiment of the present invention, FIG. 2 and FIG. 3 are example diagrams for explaining calibration in a gas detection unit of the gas detection device according to FIG. 1, FIG. 4 is a graph of the measured value according to the calibration of the gas detection unit according to FIG. 2 and FIG. 3, FIG. 5 is a detailed configuration diagram of a power management unit of the gas detection device according to FIG. 1, FIG. 6 is a flowchart of the on mode of the power management unit according to FIG. 5, and FIG. 7 is a flowchart of the off mode of the power management unit according to FIG. 5. Referring to FIGS. 1 to 6, a gas detection device (100) capable of power management according to an embodiment of the present invention includes a gas detection unit (110), a power supply unit (120), a power management unit (130), and a control unit (140). The gas detection unit (110) detects gas using a laser. The gas detection unit (110) receives power from the power supply unit (120) described later. In this case, the gas detection unit (110) receives power or cuts off power through the power management unit (130). This is to ensure that the gas detection unit (110) does not react immediately to the power supply unit (120) and the power supply unit (120)'s on or off signal, but rather receives power or cuts off power through the power management unit (130) at the very end. Accordingly, the gas detection unit (110) does not react to sudden power on or off signals, thereby minimizing damage to the gas detection information. Additionally, the state value of the gas detection unit (110) can be indicated as either On or Off. For example, the state can be determined by measuring the voltage of the gas detection unit (110). In this case, the gas detection unit (110) may be determined to be Off between 0 and 1V, and On between 2.7 and 5V,