KR100690638B1 - Module sensing gas for mobile phone - Google Patents

Abstract

A gas sensor module of a mobile terminal is provided to measure accurate alcohol concentration, to minimize space restriction on installation of internal components of a mobile terminal and to enhance the utility of space. A terminal case includes a formation hole through which external air passes. A hermetically closed case(1322) is installed within the terminal case and has gas passing holes(1322a) connected with the formation hole. A gas sensor(1321) is provided within the hermetically closed case(1322), senses a particular component of a gas introduced through the gas passing holes(1322a), and outputs a corresponding electrical signal. An FPCB(Flexible Printed Circuit Board) is installed to be electrically connected with the gas sensor(1321) within the terminal case in order to transfer the electrical signal outputted from the gas sensor(1321) to a main PCB.

Description

Gas sensor module for mobile terminal {MODULE SENSING GAS FOR MOBILE PHONE}

1 is a perspective view showing the configuration of a portable terminal equipped with a gas sensor module according to an embodiment of the present invention.

2 is a perspective view showing the configuration of the gas sensor module of FIG.

3 is a plan view of the gas sensor module of FIG.

4 to 6 illustrate a configuration in which the gas sensor module of FIG. 1 is installed inside a portable terminal.

  Figure 4 is a partial perspective view showing a state seen from the upper side.

  Figure 5 is a partial perspective view showing a state seen from the top.

  6 is a partial perspective view showing a side view.

Explanation of symbols on the main parts of the drawings

100: terminal body 110: terminal case

111: contact wall 112: stepped wall

120: main PC 130: gas sensor module

131: flexible PC 132: gas sensor unit

1321: gas sensor 1322: sealed case

1323, 141: mesh layer 133: variable resistor

140: forming hole 150: input unit

200: folder portion 210: display portion

220: speaker

The present invention relates to a gas sensor module of a mobile terminal, and more particularly, it recognizes an alcohol component contained in an exhaled gas injected by a user, and displays a blood alcohol concentration on the mobile terminal. In addition, the gas generated from the internal components of the portable terminal is sealed off to enable accurate alcohol measurement, and the gas sensor module of the portable terminal can minimize space constraints for installing internal components of the portable terminal and increase space utilization. It is about.

In general, a mobile terminal is a wireless mobile communication device that can be used indoors or outdoors by the user as well as on the go. The functions previously limited to transmitting and receiving voices perform various functions such as playing games, listening to MP3s, watching the Internet, and watching TV. Is developing into a device.

In recent years, studies have been continuously conducted to add convenience to the mobile terminal by adding various additional functions such as financial-related functions and drinking measurement functions by using the advantages of the portable terminal that the user always carries.

In particular, the so-called drinking measurement phone that can measure the drinking by using a mobile terminal is popular, which measures not only the function of inducing the user to drink alcohol by measuring the blood alcohol concentration value of the user, It has been well received by consumers by functioning to inform health status such as liver detoxification ability of users.

However, the alcohol measurement phone according to the prior art as described above by generating a signal by the gas sensor installed inside the portable terminal recognizes not only alcohol components contained in the user's breath, but also various gases generated from the internal components of the portable terminal There was a problem of producing incorrect drinking results. That is, since various electric components and the like are installed on the circuit board by welding or soldering, the gas of flux components such as chloride, fluoride, and resin is generated, and the gas is recognized by the gas sensor. There was a problem that the sensor malfunctions.

In addition, since there are many space constraints for installing the gas sensor, there is a problem that the space utilization for installing the internal components of the portable terminal is low.

In addition, there is a problem that a defect occurs or malfunctions in the gas sensor due to dust or foreign matter introduced from the outside.

The present invention has been made to solve the above-described problems, the user can easily use by displaying the alcohol concentration in the mobile terminal by recognizing the alcohol component contained in the exhaled (呼氣) injected by the user In addition, the gas is generated from the internal parts of the mobile terminal by being sealed off, so that accurate alcohol measurement is possible, and the space sensor for installing the internal parts of the mobile terminal can be minimized and the space utilization can be improved. For the purpose.

In order to achieve the object as described above, the present invention and the terminal case is formed through the forming hole through which the outside air entering and leaving; An airtight case installed in the terminal case and having a gas inlet communicating with the hole; A gas sensor provided inside the sealed case and configured to detect a specific component from the gas introduced through the forming hole and the gas entrance and exit and output an electrical signal; A flexible PC installed in the terminal case to be electrically connected to the gas sensor so as to transfer an electrical signal output from the gas sensor to the main PC, and the sealed case cooperates with the flexible PC The gas sensor module of the portable terminal is sealed so that the gas sensor is sealed from the outside except the entrance, and the sealed case is installed in close contact with the inner wall of the terminal case so that the gas entrance is sealed with the inside of the terminal case. To provide.

This is for the gas sensor unit to be sealed off from the gas other than the gas component included in the user's breath, so that accurate gas recognition can be performed.

As such, the main PCB and the gas sensor fixedly installed inside the terminal case are configured to be electrically connected by the flexible PCB so that the flexible PCB is properly bent and deformed so that the gas sensor is disposed, and thus the inside of the mobile terminal. It can increase the space utilization for component installation.

In addition, by installing a mesh layer formed in the form of a mesh in at least one of the forming hole or the gas entrance and exit, it is preferable to prevent foreign substances or dust from flowing outside the user's breath.

Hereinafter, a gas sensor module of a mobile terminal according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

However, in describing the present invention, description of already known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a perspective view showing the configuration of a mobile terminal equipped with a gas sensor module according to an embodiment of the present invention, Figure 2 is a perspective view showing the configuration of the gas sensor module of Figure 1, Figure 3 is 4 to 6 is a plan view of the gas sensor module, the configuration of the gas sensor module of Figure 1 is installed inside the portable terminal, Figure 4 is a partial perspective view showing a view from the upper side, Figure 5 Partial perspective view showing the state seen from the top, Figure 6 is a partial perspective view showing the state seen from the side.

1 to 6, the portable terminal 1 equipped with the gas sensor module according to the exemplary embodiment of the present invention is rotatable on the terminal body 100 and the upper end of the terminal body 100. Composed of the folder unit 200 combined.

The terminal body 100 includes a terminal case 110 forming an enclosure of the terminal body 100 and a control circuit fixedly installed inside the terminal body 100 to electrically control the portable terminal 1 (not shown). The main PCB 120 (shown in FIG. 4), the gas sensor module 130 installed in the main PCB 120, and the formed hole 140 formed through one side of the terminal body 100. Is formed on the front of the terminal body 100 is composed of an input unit 150 for entering a number or moving the menu.

The folder unit 200 is formed on the front surface of the folder unit 200 to display the information transmitted by the main PCB 120 and the speaker 220 provided on the upper portion of the folder unit 200. It consists of.

Here, the main PC 120 is fixedly installed in the terminal body 100 and electrically controls the functions of the general portable terminal 1 such as a telephone function, an internet function, and a TV viewing function of the portable terminal 1. The control circuit is built in. In addition to the above functions, the portable terminal 1 according to the present invention calculates an electric signal recognized by a gas sensor as described below, and transmits the digital information to the display unit 210 to display blood alcohol concentration information on the display unit 210. There is a built-in control circuit programmed to control it.

The gas sensor module 130 is electrically connected to the main PCB 120 and is in close contact with a flexible PCB 131 made of a flexible material and a flexible PCB 131 so as to be properly bent or deformed. It is composed of a gas sensor unit 132 is installed. The gas sensor unit 132 includes a gas sensor 1321 that recognizes gas, and a sealed case 1322 that seals and surrounds the gas sensor 1321 to seal the gas sensor 1321.

In addition, the variable PC 131 is provided with a variable resistor 133. Here, the variable resistor 133 is installed to convert the current generated from the gas sensor 1321 to an appropriate magnitude to be input to the flexible PC ratio 131 or the main PC ratio 120, to achieve the object of the present invention. It is not a necessary component in order to be used commonly in the implementation of the electrical circuit.

In this case, the flexible PCB 131 includes an output terminal part 131a electrically connected to the main PCB 120, a sensor installation part 131b provided with the gas sensor part 132, and an output terminal part 131a. And a connection part 131c connecting the sensor installation part 131b to each other. The flexible PC 131 is preferably made of a material that can be bent or deformed appropriately to secure a space for installing the components inside the portable terminal 1. Recently, the portable terminal 1 has a merit of securing a space for installation of other components by using the flexible PCB 131 because a large number of parts are installed in order to mount various functions as much as possible.

In addition, the flexible PC ratio 131 is preferably made of a material having a predetermined elastic force. This is, as will be described later, when the flexible PCB 131 is installed bent by 180 degrees or more, the gas sensor unit 132 installed on the flexible PCB 131 using an elastic force of the flexible PCB 131 material ( In particular, the sealed case 1322 may be in close contact with the inner wall 110a of the terminal case 110 to prevent other gases or foreign substances from entering. In addition, even when the flexible PCB 131 is bent or deformed into an appropriate shape as needed in the production of a mobile terminal, there is an advantage in that the structural coupling force can be increased by using the elastic force of the flexible PCB 131. Because.

The gas sensor 1321 is installed in close contact with one surface of the flexible PCB 131, and the gas sensor 1321 includes a thin film layer made of tin oxide (SnO ₂ ). The gas sensor 1321 is electrically connected to the flexible PCB 131, and when the gas sensor 1321 recognizes an alcohol component, the gas sensor 1321 transmits an electric signal to the flexible PCB 131.

The sealed case 1322 is installed to be in close contact with the flexible PCB 131 so as to be sealed, and surrounds the gas sensor 1321 so that the gas sensor 1321 is accommodated therein. In addition, a gas inlet 1322a is formed at an upper portion of the sealed case 1322 so that the gas introduced into the formation hole 140 is guided to the gas sensor 1321. The gas entrance 1322a may be formed in one or more holes, or may have a slit shape. Therefore, since the gas sensor 1321 is sealed by the flexible PCB 131 and the side is sealed by the sealed case 1322, only the gas entrance 1322a formed on the upper part of the sealed case 1322 is provided. It may be in contact with the incoming gas. That is, other gases generated by the internal components of the portable terminal 1 (eg, flux gas such as chloride, fluoride, resin, etc.) are blocked by the sealed case 1322 and the flexible PCB 131 to allow the gas. It cannot be contacted with the sensor 1321.

In this case, a mesh layer 1323 is formed on the upper portion of the gas inlet 1322a to prevent the inflow of bulky dust particles or foreign substances from the outside through the gas inlet 1322a formed at the upper portion of the sealed case 1322. It is preferable to install.

4 to 6 illustrate a state in which the gas sensor module 130 is installed, the gas sensor module according to an embodiment of the present invention is located at the edge of the main PC 120 fixedly installed in the terminal body 100. The installation space 121 is formed so that the 130 may be installed.

The sealed case 1322 containing the gas sensor 1321 has an inner wall 110a of the terminal case 110 so that the gas inlet 1322a formed thereon communicates with the forming hole 140 formed in the terminal body 100. Close to) Therefore, the gas flowing into the sealed case 1322 may be in contact with the gas sensor 1321 only through the forming hole 140 and the gas inlet 1322a.

In addition, the sealed case 1322 has a rear surface of the flexible PCB 131 so as to prevent other gases or foreign substances from entering by opening between the sealed case 1322 and the inner wall 110a of the terminal case 110. Tightly fixed by a close contact wall 111 provided on the other surface of the face on which the sealed case 1322 is installed.

In addition, since the variable resistor 133 installed on the side of the sealed case 1322 is generally lower than the height of the sealed case 1322, the variable resistor 133 is a terminal so as to accurately match the structure and increase mass productivity. It is preferable to be fixed by the stepped wall 112 inserted between the inner wall 110a and the variable resistor 133.

The connection portion 131c of the flexible PC 131 is bent approximately 180 degrees, as shown in detail in FIG. 6 to minimize the installation space of the gas sensor module 130 according to an embodiment of the present invention. Since the flexible PCB 131 of the present invention is made of a flexible material, the flexible PCB 131 may be bent or deformed in various directions or methods as needed when producing a portable terminal. The output terminal portion 131a of the flexible PCB 131 contacts the main PCB 120 to input an electric signal generated from the gas sensor 1321 to the main PCB 120.

On the other hand, the forming hole 140 may be made of a rectangular shape (shown in FIG. 1), a circular shape, an elliptical shape or the like, or may be formed in a slit shape. Preferably, the mesh layer 141 may be provided inside the forming hole 140 to prevent the inflow of bulky dust particles or foreign matter from the outside through the forming hole 140. In addition, the forming hole 140 is formed on one side of the terminal main body 100 in one embodiment of the present invention, but may be formed at any position of the entire portable terminal 1.

Referring to the operation principle of the gas sensor module of the mobile terminal 1 according to an embodiment of the present invention configured as described above are as follows.

When the user intends to measure drinking using the mobile terminal 1, after pressing the button of the input unit 150 to switch the use mode of the mobile terminal 1 displayed on the display unit 210 to the drinking measurement mode, Blowing breath (expiration) through the forming hole 140 formed through the side of the terminal main body 100.

Then, the user's breath introduced through the forming hole 140 is introduced into the sealed case 1322 through the gas inlet 1322a of the sealed case 1322, and the user introduced into the sealed case 1322. The exhalation of is in contact with the gas sensor 1321.

Numerous free electrons flow in the thin film of the gas sensor 1321 made of tin oxide, and when oxygen (O ₂ ) gas contacts the thin film, the free electrons are adsorbed on the surface of the oxygen gas, so that the thin film is made of tin oxide. The conductivity drops. However, when the alcohol, the reducing gas contained in the user's breath, comes into contact with the thin film, the alcohol reacts with oxygen to oxidize itself and release free electrons.

Therefore, the electrical conductivity of the thin film is instantaneously increased, and the electrical signal due to the increased electrical conductivity is reduced to a current having an appropriate magnitude through the variable resistor 133, through the output terminal portion 131a of the flexible PC 131. Is transmitted to the main PCB 120.

The main PC 120 calculates the received electrical signal, converts the digital signal into digital information, and transmits the converted electrical signal to the display unit 210. The information indicating that the gas sensor 1321 recognizes an alcohol component is displayed on the display unit 210.

The information displayed on the display unit 210 is appropriately programmed through the micro interface of the main PC 120 to be displayed in the form of numbers, images, alarm sounds or alarm lights.

In this case, since the mesh layers 141 and 1323 in the form of a net are installed at the formation hole 140 of the terminal body 100 or the gas entrance 1322a of the sealed case 1322, other gases or foreign substances except for the user's breath. The dust, or the needles emitted from the mouth of the user may be blocked from contacting the gas sensor 1321. Therefore, since the gas sensor 1321 can recognize only the alcohol component contained in the user's exhalation, the degree of drinking measurement of the gas sensor 1321 becomes very accurate, and there is no fear of malfunction in other gases.

On the other hand, the gas sensor module of the portable terminal 1 according to an embodiment of the present invention by bending the flexible PC ratio 131 approximately 180 degrees, thereby minimizing the installation space of the gas sensor module 130, Accordingly, the installation space of the internal parts of the portable terminal 1 is secured to the maximum.

In addition, an adhesion wall 111 is provided on the rear surface of the flexible PC 131 to prevent a gap between the sealed case 1322 and the inner wall 110a of the terminal case 110, and the inner wall of the terminal case 110 is provided. By providing the stepped wall 112 between the 110a and the variable resistor 133, it is possible to prevent other gas generated from the components inside the portable terminal 1 from contacting the gas sensor 1321.

While the exemplary embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to the specific embodiments as described above, and may be appropriately changed within the scope described in the claims.

As described above, the present invention recognizes the alcohol component contained in the exhaled air injected by the user to display the blood alcohol concentration on the portable terminal, which can be easily used by the user, and also occurs in the internal parts of the portable terminal. The present invention provides a gas sensor module of a mobile terminal capable of precisely measuring alcohol and minimizing spatial constraints for installing internal components of the mobile terminal and increasing space utilization.

Claims (6)

A terminal case having a through hole formed therein for entering and leaving the outside air; An airtight case installed in the terminal case and having a gas inlet communicating with the hole; A gas sensor provided inside the sealed case and configured to detect a specific component from the gas introduced through the forming hole and the gas entrance and exit and output an electrical signal; And a flexible PC installed in the terminal case to be electrically connected to the gas sensor so as to transfer the electrical signal outputted from the gas sensor to the main PC. The sealed case cooperates with the flexible PC to seal the gas sensor from the outside except for the gas entrance, and the sealed case is in close contact with the inner wall of the terminal case so that the gas entrance is sealed with the inside of the terminal case. Gas sensor module of a portable terminal, characterized in that the installation. delete delete The method of claim 1, The gas sensor module of the portable terminal, characterized by further comprising a mesh installed in at least one of the forming hole or the gas entrance. The method of claim 4, wherein The flexible PC is An output terminal part electrically connected to the main PCB; A sensor installation unit in which the gas sensor unit is installed; A connection part connecting the output terminal part and the sensor installation part; Gas sensor module of a mobile terminal, characterized in that it comprises a. The method according to any one of claims 1 and 4 and 5, The closed case is a gas sensor module of a mobile terminal, characterized in that the close contact with the inner wall of the terminal case by the elastic force of the flexible PC.

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