KR100665921B1 - Mobile Station Having Function For Detecting Concentration Of Gas - Google Patents

Abstract

The present invention relates to a communication terminal having a gas concentration detection function, the gas sensor for generating a detection signal corresponding to the resistance value of the detection film according to the concentration of the incoming gas and converting the detection signal into a state value corresponding to the measurement mode type Transmitting and receiving data through a communication unit and a communication network, transmitting the measurement mode type information to the gas sensor unit in a gas measurement mode, receiving the state value corresponding to the measurement mode type from the gas sensor unit, and receiving the received state. A terminal main body unit displaying a value, wherein the gas sensor unit generates a detection signal corresponding to the resistance value of the sensing film according to the concentration of the inlet gas, a standard resistance value for calibration of the gas sensor and the measurement mode Store the state value database of the inlet gas corresponding to the detection signal by type And a microcomputer for converting the detection signal detected by the gas sensor into a state value of the inflow gas with reference to the memory and the state value database.

Drinking, measuring, terminals, communication, mobile phones, gas.

Description

Mobile terminal having a function of detecting gas concentration {Mobile Station Having Function For Detecting Concentration Of Gas}

1 is a block diagram showing the configuration of a communication terminal having a gas concentration detection function according to the present invention.

2 is a block diagram showing a detailed configuration of a communication terminal having a gas concentration detection function according to the first embodiment of the present invention.

3 is a block diagram showing an internal configuration of a gas measurement module unit.

4 is a block diagram showing an internal configuration of a memory.

5 is a block diagram showing an internal configuration of a gas sensor.

6 is a block diagram showing a detailed configuration of a communication terminal having a gas concentration detection function according to the second embodiment of the present invention.

<Description of Major Reference Symbols>

10: terminal body portion, 11: input portion,

12: display unit, 13: communication unit,

14, the control unit, 15: gas measurement module unit,

16: power supply unit, 17: state value calculation unit,

20: gas sensor unit, 21: memory,

23: microcomputer, 25: gas sensor.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal having a gas concentration detection function, and more particularly, to a communication terminal in which a gas sensor module is built in a communication terminal to measure various gas concentrations such as drinking, air pollution, and bad breath.

As the damage to life and property caused by drunk driving increases day by day, the crackdown on alcohol is gradually strengthening. As a result, the driver determines the amount of alcohol he or she can determine whether or not driving is possible. Such a judgment may be inaccurate, and a misjudgment often results in suspension or cancellation of a license or a large accident.

Since a general portable breathalyzer is expensive, it is a burden for a driver to purchase a portable breathalyzer.

Therefore, the idea of adding a drinking measurement function to the communication terminal possessed by the majority of the driver has emerged, and a communication terminal having such a drinking measurement function is disclosed in Korean Patent Application No. 10-2000-0039656.

The present invention is to allow the conventional communication terminal to display the result measured by the alcohol measurement sensor as a percentage compared to the data stored in the internal memory of the communication terminal in the mobile station modem.

However, the present invention has a problem that the mobile station modem should include a function for calculating the alcohol concentration when the communication terminal body is manufactured, and the data for calculating the alcohol concentration must be stored in the internal memory in advance. Therefore, a communication terminal body manufacturer requires an additional process different from that of a normal communication terminal body production, resulting in low productivity, thereby avoiding the production of the communication terminal body according to the present invention.

 In addition, the present invention is not only provided with a drinking measurement function, but also a method using a gas sensor, for example, air pollution measurement, bad breath (or bad breath) measurement, etc. are not disclosed at all.

The present invention has been made to solve the problems of the communication terminal with a conventional breath measurement function as described above, an object of the present invention is to integrate the terminal with the terminal body through the connector in a single module form as a gas sensor unit built-in terminal It is to provide a communication terminal having a gas concentration detection function that can produce productivity and process convenience by separately producing the main body and the gas sensor unit after assembly.

Another object of the present invention is that the gas sensor unit is provided separately from the terminal body in the form of a single module, the gas sensor unit is supplied with power from the terminal body only during the measurement operation and the power supply is cut off when the measurement operation is completed to reduce power consumption It is to provide a communication terminal having a gas concentration detection function.

Another object of the present invention is to provide a communication terminal having a multi-purpose gas concentration detection function that enables measurement of various gas concentrations such as air pollution, bad breath, etc. in addition to the conventional drinking amount measurement.

According to an aspect of the present invention for achieving the above object, a gas for generating a detection signal corresponding to the resistance value of the detection film according to the concentration of the inlet gas and converting the detection signal into a state value corresponding to the measurement mode type Transmitting and receiving data through a sensor unit and a communication network, transmitting the measurement mode type information to the gas sensor unit in a gas measuring mode, receiving the state value corresponding to the measuring mode type from the gas sensor unit, and receiving the received A main body unit displaying a state value, wherein the gas sensor unit generates a detection signal corresponding to a resistance value of the sensing film according to the concentration of the inflow gas, a standard resistance value for calibration of the gas sensor, and the measurement Storing a state value database of the inlet gas corresponding to the detection signal for each mode type And a microcomputer for converting a detection signal detected by the gas sensor into a state value of the inflow gas with reference to a memory and the state value database.

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Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram showing the configuration of a communication terminal having a gas concentration detection function according to the present invention.

The gas sensor unit 20 is manufactured as a single module and is electrically connected to the terminal body unit 10 through a connector (not shown). The gas sensor unit 20 generates a detection signal corresponding to the resistance value of the sensing film (not shown) according to the concentration of the inlet gas, and converts the detection signal into a state value corresponding to the measurement mode type to thereby the terminal body unit 10. To send). In the present embodiment, the measurement mode type includes a drinking measurement mode for calculating the blood alcohol concentration of the inflow gas, an air pollution measurement mode for calculating the contamination level of the inflow gas, a bad breath measurement mode for measuring the breathability of the inflow gas, and the like. It may include.

In addition to transmitting and receiving data for a communication function of a conventional communication terminal, the terminal body unit 10 measures the measurement mode type information (drinking, air pollution, and bad breath degree) with the gas sensor unit 20 in the gas measurement mode according to the present invention. Any one), receives a state value corresponding to the measurement mode type from the gas sensor unit, and displays the received state value.

2 is a block diagram showing a detailed configuration of a communication terminal having a gas concentration detection function according to the first embodiment of the present invention.

First, the terminal body 10 includes an input unit 11, a display unit 12, a communication unit 13, a control unit 14, a gas measurement module unit 15, and a power supply unit 16.

Here, since the communication unit 13 and the power supply unit 16 are the same as those in the conventional communication terminal, description thereof is omitted.

The input unit 11 is an interface means for receiving a command from a user, and includes various input means such as a keypad, a touch screen, a mouse, and a stylus. The input unit 11 receives a gas measurement command and a measurement mode type selection command from a user.

The gas measurement module unit 15 is a kind of program storing a gas measurement module for each measurement mode type, and stores a gas measurement program for allowing a user to perform gas measurement. That is, when the user selects the gas measurement menu in the communication terminal screen menu-more specifically, the alcohol measurement, air pollution measurement, and bad breath measurement-the gas measurement program (module) stored in the gas measurement module unit 15 is executed and measured. The operation and the measurement result are displayed on the display unit 12.

The controller 14 drives the gas measurement module unit 15 to execute the gas measurement program, and when the gas measurement and the measurement mode type selection are input through the input unit 11, the controller 14 transmits the gas measurement module unit 15 to the gas sensor unit 20. The sensor unit 20 receives a state value of the exhalation gas corresponding to the measurement mode type.

The display unit 12 displays the state value of the exhaled gas received from the control unit 14.

The gas sensor unit 20 includes a memory 21, a microcomputer 23, and a gas sensor 25.

The gas sensor 25 generates a detection signal corresponding to the resistance value of the sensing film according to the concentration of the inlet gas.

The memory 21 stores a standard resistance value for calibration of the gas sensor 25 and a state value database of the inlet gas corresponding to the detection signal for each measurement mode type. The memory 21 is preferably a nonvolatile memory in which recorded data is not erased. In particular, the EEPROM is suitable.

The microcomputer 23 converts the detection signal detected by the gas sensor 25 into a state value of the inflow gas with reference to the state value database and transmits the state to the control unit 14 of the terminal body unit 10.

3 is a block diagram showing the internal configuration of the gas measurement module unit 15.

As shown in FIG. 3, the gas measurement module unit 15 measures an air pollution level storing a program for an air pollution level measurement mode and a breath measurement module 15-1 storing a program for a alcohol measurement mode. Module 15-3 and a breath freshness measuring module 15-5 storing a program for the bad breath measuring mode.

That is, the gas measurement module unit 15 is a kind of program that provides a graphic user interface for the user to guide the process and display the measurement result during gas measurement.

4 is a block diagram showing an internal configuration of a memory.

As shown in FIG. 4, the memory 21 includes an alcohol concentration database 21-1, an air pollution database 21-3, a bad breath database 21-5, and a standard resistance value database 21-7. Include.

The alcohol concentration database 21-1 stores the resistance values of the sensing membrane and the alcohol concentration values corresponding to the resistance values in the drinking measurement mode as the state values of the inflow gas. In general, as the amount of alcohol contained in the inlet gas decreases the resistance value of the detection film, the relationship between the alcohol concentration and the resistance of the detection film is measured and databased. In the present embodiment, the absolute value measuring method for directly calculating the alcohol concentration from the resistance value of the sensing film is used, but it is also possible to use the relative value measuring method as in the bad breath measurement described later.

The air pollution degree database 21-3 stores the resistance value of the sensing film and the corresponding air pollution degree value as the state value of the inflow gas in the air pollution measurement mode. The gas sensor 25 reacts not only with alcohol but also with other volatile organic compounds, tobacco smoke and the like, and thus can be used to measure air pollution using this property. The air pollution value may be expressed in ppm or the like when measuring the concentration of tobacco smoke or a specific organic compound, or, more simply, several steps (for example, 1 (clean state) to 10 (extreme pollution state) It is also possible to mark with). It is possible to use the relative value measuring method which air pollution degree also mentions later.

The bad breath degree database 21-5 stores the relative ratio between the initial resistance value and the measured resistance value in the bad breath degree measurement mode as the bad breath degree value. The gas sensor 25 also reacts to bad breath coming out of the mouth. However, since the amount of gas from the bad breath is very small, the result may be somewhat inaccurate when the absolute value is analyzed, such as alcohol measurement or air pollution measurement. Therefore, a relative value calculation method is used. That is, when the initial stabilization of the gas sensor 25 is finished, the sensor film resistance value (initial resistance value) is stored at that time, and when the user blows on, the resistance value at that time is compared with the initial resistance value, and the degree of bad breath as the degree of change thereof. Judge. Naturally, the absolute value measuring method may be taken in the bad breath measurement.

The standard resistance value database 21-7 stores standard resistance values for calibration of the gas sensor 25. The gas sensor unit producer of the present invention puts the gas sensor unit 20 into a chamber, and makes the inside thereof at a standard gas concentration, and stores the sensing film resistance in the state as a standard resistance value in the memory 21. Since the sensor calibration is performed by the gas sensor unit producer, the terminal body unit 10 manufacturer only needs to connect the gas sensor unit 20 to the terminal body unit 10 with a connector.

5 is a block diagram showing the internal configuration of the gas sensor 25.

As shown in FIG. 5, the gas sensor 25 includes a semiconductor gas sensor 25-1 and a heater 25-3.

The semiconductor gas sensor 25-1 has the characteristic that the resistance of the sensing film decreases when the gas concentration increases. Therefore, when the gas concentration increases, the resistance of the sensing film decreases, thereby causing a voltage drop across the sensing film, and the semiconductor gas sensor 25-1 outputs a sensing signal corresponding to the voltage drop.

Since the semiconductor gas sensor 25-1 operates normally at a temperature of approximately 300 to 400 ° C., a heater 25-3 is required to maintain a high temperature. The heater 25-3 is a semiconductor gas sensor 25-. In order for the sensing film of 1) to operate normally, the sensing film is heated for a predetermined time (initial preheating time).

Since the resistance value of the sensing film is different for each of the semiconductor gas sensors 25-1, calibration is necessary for each sensor.

6 is a block diagram showing a detailed configuration of a communication terminal having a gas concentration detection function according to a second embodiment of the present invention.

The second embodiment differs from the first embodiment in that the microcomputer 23 is not provided in the gas sensor unit 20, and the terminal body unit 10 includes the state value calculating unit 17.

That is, in the second embodiment, when the gas sensor 25 of the gas sensor unit 20 changes the resistance value according to the concentration of the inflow gas and generates a corresponding detection signal, the state value of the terminal body unit 17 is generated. The calculation unit 17 converts the detection signal detected by the gas sensor 15 into the state value of the inflow gas with reference to the state value database of the memory 21.

In other words, the second embodiment includes only the configuration for the inlet gas detection and data comparison in the gas sensor unit 25, and the actual arithmetic processing is performed in the terminal body unit 10.

Hereinafter, the operation of the communication terminal having the gas concentration detecting function according to the first embodiment will be described for each measurement mode.

Breathalyzer mode

When the user presses the menu button of the mobile phone and selects the gas measurement menu from the menu displayed on the screen, and then selects the alcohol measurement menu, the power supply unit 16 of the terminal main body 10 applies power to the gas sensor unit 20. The power applied is usually about 1 to 5V DC.

When the power is applied, the gas sensor unit 20 finishes initial stabilization (about 60 seconds or less) and displays a phrase on the screen.

When the user blows on the gas, the gas sensor unit 20 calculates the alcohol concentration and transmits the calculated value to the terminal body unit 10.

When the terminal body unit 10 receives the alcohol concentration value, the gas sensor unit 20 is turned off and the measurement result is displayed on the screen for a predetermined time.

If the user wants to remeasure, select the item from the menu and perform the remeasurement.

Air Pollution Measurement Mode

When the user presses the menu button of the mobile phone and selects a gas measurement menu from the menus displayed on the screen, and then selects an air pollution measurement menu, the power supply unit 16 of the terminal body unit 10 supplies power to the gas sensor unit 20 Wait for stabilization time.

When gas is introduced from the outside, the gas sensor unit 20 measures the resistance of the sensing film and calculates an air pollution level corresponding thereto.

When the terminal main body 10 receives the air pollution value, the gas sensor 20 is turned off and the measurement result is displayed on the screen for a predetermined time.

If the user wants to remeasure, select the item from the menu and perform the remeasurement.

Bad breath measurement mode

When the user presses the menu button of the mobile phone, selects the gas measurement menu among the menus displayed on the screen, and then selects the bad breath measurement menu, the power is supplied to the gas sensor unit 20 from the power supply unit 16 of the main body of the terminal 10. Wait for the initial stabilization time.

When the user blows the gas, the gas sensor unit 20 measures the initial resistance value and the detection film resistance value at the time of measurement, calculates the ratio of the two measured values, and calculates the degree of bad breath (odor) from there.

When the terminal main body 10 receives the bad breath degree value, the gas sensor 20 is turned off and the measurement result is displayed on the screen for a predetermined time.

If the user wants to remeasure, select the item from the menu and perform the remeasurement.

According to the present invention as described above, the gas sensor unit as a built-in terminal to be combined with the terminal body through a connector in a single module form to produce a terminal body and the gas sensor unit separately after assembly can bring productivity and process convenience A communication terminal having a gas concentration detection function can be provided.

In addition, since the gas sensor unit is provided separately from the terminal body in a single module form, the gas sensor unit receives power from the terminal body only during the measurement operation, and when the measurement operation is completed, the power supply is cut off to reduce power consumption. It is possible to provide a communication terminal having a.

In addition, it is possible to provide a communication terminal having a multi-purpose gas concentration detection function that enables measurement of various gas concentrations such as air pollution and bad breath in addition to the conventional drinking amount measurement.                     

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as fall within the spirit of the invention.

Claims (10)

A gas sensor unit generating a detection signal corresponding to the resistance value of the detection film according to the concentration of the inlet gas and converting the detection signal into a state value corresponding to the measurement mode type; And Transmitting and receiving data through a communication network, transmitting the measurement mode type information to the gas sensor unit in a gas measurement mode, receiving the state value corresponding to the measurement mode type from the gas sensor unit, and receiving the received state value. Including a terminal body to display, The gas sensor unit A gas sensor for generating a detection signal corresponding to the resistance value of the sensing film according to the concentration of the inlet gas, a standard resistance value for calibration of the gas sensor, and a state value database of the inlet gas corresponding to the detection signal for each measurement mode type. And a microcomputer for converting a detection signal detected by the gas sensor into a state value of the inflow gas with reference to a memory storing the state and the state value database. The method of claim 1, The measurement mode type is A drinking measurement mode for calculating a blood alcohol concentration of the inlet gas; An air pollution measurement mode for calculating the pollution degree of the inlet gas; And And a bad breath degree measuring mode for measuring bad breath of the inlet gas. delete The method of claim 2, The terminal body portion Communication unit for transmitting and receiving data; An input unit receiving a gas measurement command and a measurement mode type selection input; A gas measurement module unit storing the gas measurement module for each measurement mode type; The gas measuring module unit is driven to execute a gas measuring program, and when a gas measuring and measuring mode type selection is input through the input unit, it is transmitted to the gas sensor unit, and an exhalation gas corresponding to the measuring mode type from the gas sensor unit. A control unit to receive a state value of the; And And a display unit for displaying a state value of the exhaled gas received by the control unit. delete delete delete delete The method of claim 1, The memory is An alcohol concentration database storing the resistance value of the detection membrane and the corresponding alcohol concentration value in the alcohol measurement mode; An air pollution database which stores the resistance value of the sensing film and the corresponding air pollution value in the air pollution measurement mode; A bad breathing degree database storing a relative ratio between the initial resistance value and the measured resistance value in a bad breathing degree measurement mode; And And a standard resistance value database for calibrating the gas sensor. The method of claim 4, wherein The gas measurement module unit A drinking measurement module storing a program for the drinking measurement mode; An air pollution measurement module storing a program for the air pollution measurement mode; And And a breath freshness measuring module for storing a program for the bad breath measuring mode.

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