KR101650730B1 - System for measuring multi-item using chip sensor and smart phone - Google Patents

Abstract

One embodiment of the present invention relates to a smartphone measurement system for multi-item measurement using a chip sensor, and a technical problem to be solved is to combine a salinity or a sugar measurement function with a smartphone, To be able to carry out.
To this end, one embodiment of the present invention includes a biosensor module having a lead terminal at one end of a body, and an electrode part connected to the lead terminal at the other end opposite to the one end, And a mobile communication terminal on which the measurement application is mounted and connected to the lead terminal and receiving the multi-item measurement data of the sample measured by the electrode unit from the biosensor module by executing the measurement application, Disclosed is a smartphone measurement system for multi-item measurement using a sensor.

Description

TECHNICAL FIELD [0001] The present invention relates to a smart phone measuring system for measuring multi-item using a chip sensor,

One embodiment of the present invention relates to a smartphone measurement system for multi-item measurement using a chip sensor.

Salt is the most important food to taste food. Generally, the food is measured by a person who is responsible for the kitchen work as a sensory test.

However, in modern times, both recipe and food habits are becoming diverse, and cooking technology of food is becoming larger, industrialized, or standardized. Thus, what is essential in the process of standardization of cooking technology is to represent the salinity of foods, especially soup, as an objective indicator.

The salinity meter used as a conventional salinity measuring instrument amplifies the ripple current flowing through the salinity sensor and charges the integrated condenser. The current of the integrated condenser is applied to one terminal of the comparator for a predetermined time, Compensated salinity current at the output terminal of the comparator by applying the detection current of the amplified temperature sensor and converting the output of the comparator into a digital value from the A / D converter through the buffer, and displaying the digital value on the LCD module.

However, since the conventional salinity meter is expensive and has a separately provided measuring instrument, it is inconvenient to carry, and there is a problem that it is difficult to measure the salinity easily at a restaurant or a restaurant.

On the other hand, since the electrochemical biosensor has a great marketability and applicability in the field of medical and water quality analysis, continuous research is being carried out worldwide, and active research and commercialization are being conducted in the medical device field in Korea.

The electrochemical biosensor is capable of quantitatively measuring a chemical species to be measured by combining an enzyme reaction characterizing the substrate specificity with an electrochemical reaction of the electrode reaction and detecting an electrical signal generated therefrom by the enzyme reaction have.

The electrochemical biosensor generally comprises an insulating substrate, a conductive layer, a dielectric layer, an enzyme reaction layer, a spacer, a cover, and the like.

Here, the lead terminal of the conductive layer of the biosensor is connected to a measuring device that converts the electrical signal detected by the electrode reaction into a concentration value and enables it to be visually confirmed, And a measurement system using the same. Such a measurement system may be constructed so as to measure the concentration of a desired chemical species by replacing a sensor substance fixed to a working electrode in a conductive layer with an antibody, a chemical molecule or a substance. Major advantages of such a measurement system include ease of use, ease of portability, and accuracy of measurement results.

In addition, the electrochemical biosensor has a limitation in that it can measure only the concentration of a specific component contained in the sample in a single operation.

Patent Registration No. 10-0752415 'Sugariness Measurement System of Fruit or Fruit Drink Using Electrochemical Biosensor' Japanese Patent Application Laid-Open No. 10-2013-0115675 'Biosensor' Patent No. 10-0555840 'Biosensor for detecting ammonia oxidation inhibitor'

One embodiment of the present invention relates to a method for detecting at least one of salinity, sugar content, microbial bacteria, potassium, Escherichia coli, residual chlorine, phosphorus, and nitrogen of a sample, at least one of urine component data, And a multi-item data measurement function including a multi-item data measurement function, and provides a multi-item measurement smartphone measurement system using a chip sensor capable of performing multi-item measurement while the user is carrying it.

In a smartphone measurement system for multi-item measurement using a chip sensor according to an embodiment of the present invention, a lead terminal is provided at one end of a body, and the other end opposite to the one end is connected to the lead terminal, A biosensor module having an electrode unit; And a mobile communication terminal for receiving and displaying multi-item measurement data of the sample measured by the electrode unit from the biosensor module by executing the measurement application after the measurement application is connected to the lead terminal have.

Wherein the mobile communication terminal comprises: a first power supply for supplying power to the biosensor module when electrically connected to the lead terminal; A signal processor for signal processing the multi-item measurement data measured by the biosensor module; A display unit for externally displaying the signal-processed multi-item measurement data; A first memory unit for storing the multi-item measurement data and the measurement application; A second power supply for supplying power to components other than the biosensor module; A power control unit for sensing a state of charge of the second power supply unit and selecting an operation of the first power supply unit or the second power supply unit according to a detection result; And a first control unit mounted with a measurement application and controlling the operation of each component by execution of the measurement application.

The power control unit may operate the first power supply unit when the charging power of the second power supply unit is less than an operation reference voltage of the biosensor module.

The power control unit may maintain the operation of the second power supply unit when the charging power of the second power supply unit is greater than the operation reference voltage of the biosensor module.

The mobile communication terminal may include a terminal unit, and the biosensor module may include a chip-type biosensor connected to the terminal unit through a lead terminal.

The multi-item data may include at least one of salinity, sugar content, microbial count, potassium, E. coli, residual chlorine, phosphorus, and nitrogen of the sample, data of at least one of urine Component data, and needle component data.

Further, in a smartphone measurement system for multi-item measurement using a chip sensor according to another embodiment of the present invention, a communication module is provided at one end of a body, and an electrode unit is provided at the opposite end of the body, A biosensor module; And a measurement application are installed and connected to the communication module through a short-range wireless communication network such as WIFI, Zigbee, Bluetooth, or Near Field Communication (NFC) And a mobile communication terminal for receiving and displaying the multi-item data of the sample measured by the electrode unit.

The smartphone measurement system for multi-item measurement using the chip sensor according to an embodiment of the present invention can easily perform multi-item data measurement with ease of portability, and can reduce manufacturing cost.

According to an embodiment of the present invention, when a user desires to perform multi-item data measurement, a connector terminal of the biosensor module is connected to an input terminal of a portable smartphone, .

1 is a schematic view of a smartphone measurement system for multi-item measurement using a chip sensor according to an embodiment of the present invention.
2 is an exploded perspective view showing the biosensor module of FIG.
3 is a side view showing the side of the biosensor module of FIG.
4 is a perspective view showing the biosensor module of FIG.
FIG. 5 is an equivalent circuit diagram illustrating a peripheral configuration for operation of the biosensor module of FIG. 1 and the biosensor module.
6 is a block diagram schematically showing the configuration of the smartphone of Fig.
7 is a schematic diagram of a smartphone measurement system for multi-item measurement using a chip sensor according to another embodiment of the present invention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which those skilled in the art can readily implement the present invention.

FIG. 1 is a schematic view of a smartphone measurement system for multi-item measurement using a chip sensor according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the biosensor module of FIG. 1, FIG. 4 is a perspective view showing the biosensor module of FIG. 1, FIG. 5 is an equivalent circuit diagram illustrating a peripheral configuration for operation of the biosensor module of FIG. 1 and the biosensor module of FIG. 1, 6 is a block diagram schematically showing the configuration of the smartphone of Fig.

Referring to FIG. 1, a smartphone measurement system for multi-item measurement using a chip sensor according to an embodiment of the present invention includes a biosensor module 100 and a mobile communication terminal 200. The present invention relates to a mobile communication terminal 200, such as a smart phone, that is provided with at least one of salinity, sugar content, microbial bacteria, potassium, E. coli, residual chlorine, phosphorus and nitrogen of urine, urine component data, And a biosensor module 100 having a multi-item data measurement function including at least one of the multi-item data measurement functions.

The biosensor module 100 includes a connector 102 at one end of the body 101 and an electrode unit connected to the connector 102 at the other end opposite to the one end to be contained in or contacted with the sample.

The connector 102 is connected to a terminal portion of the mobile communication terminal 200 and enables data transmission and reception for multi-item measurement with the biosensor module 100 and the mobile communication terminal 200. A communication protocol for interfacing between the connector 102 and the mobile communication terminal 200 may be variously used and a protocol applied to the conventional mobile communication terminal 200 may be used.

The biosensor module 100 is connected to a terminal (not shown) of the mobile communication terminal 200 through a connector 102 to measure multi-item data on the sample.

More specifically, the biosensor module 100 includes an insulating substrate 10, a lead terminal 11, an electrode portion 18, and a lead wire 12.

The insulating substrate 10 is a base substrate formed using a polymeric resin of a nonconductive material. Examples of the polymer resin having the nonconductive material include polyester, polycarbonate, polystylene, polyimide, polyvinyl chloride, polyethylene, polyethylene terephthalate (polyethylene) telephthalate) can be used.

The upper portion of the insulating substrate 10 is provided with three lead terminals 11 which are in contact with a measuring device (not shown) at one end thereof and three lead terminals 11 which are formed by enzymatic reaction of the sugar in the sample in the enzyme reaction layers 301 and 302 An electrode portion 18 composed of electrodes 15, 16 and 17 for detecting an electrical signal and a lead wire 12 connecting the electrodes of the lead terminal 11 and the electrode portion 18 are printed. The lead terminals 11 and the lead wires 12 on the insulating substrate 10 may be formed of platinum Pt, gold Ag or silver mixed with AgCl, The electrode portion 18 can be formed by a conventional method such as screen printing using a conductive carbon paste.

The first working electrode 16 and the second working electrode 17 constituting the electrode unit 18 have the same electrical resistance and area. The first working electrode 16 and the second working electrode 17 are arranged at equal distances from each other around the long axis of the reference electrode 15 of the electrode unit 18. [ This is for detecting the amount of current between the first working electrode 16 and the second working electrode 17 adjacent to the reference electrode 15 under the same electrochemical condition. These electrodes 15, 16 and 17 serve to detect the amount of current generated by the enzyme reaction in the two enzyme reaction layers 301 and 302.

The insulating layer 20 having the exposed areas 21 and 22 having the same area for exposing only a certain portion of the electrode part 18 is formed when the electrode part 18 is formed . The exposed grooves 21 and 22 expose only a certain portion of the same area of the electrode portion 18 so that the oxidation currents due to the enzyme reaction between the enzyme reaction layers 301 and 302 introduced into the electrode portions 18 and the sample It reacts with the same area in the case of occurrence. In addition, depending on the thickness (height) of the exposed grooves 21 and 22 when the enzyme reaction layers 301 and 302 are introduced into the electrode portion 18 in which a certain portion of the same area is exposed by the exposure grooves 21 and 22, The amount of the enzyme reaction layer can be controlled. At this time, microvibration may be generated from the outside, so that the enzyme reaction layers 301 and 302 can be constantly formed in the same area as the exposed grooves 21 and 22. As the insulator used for the insulating layer 20, a nonconductive paste or an insulating paste is preferable, and it can be formed by a conventional method such as screen printing or the like.

An enzyme reaction layer (301, 302) is formed on the upper surface of the electrode exposed by the exposed grooves (21, 22) of the insulating layer (20). The enzyme reaction layers 301 and 302 may include one or more enzymes selected from glucose oxidase or glucose dehydrogenase, fructose dehydrogenase and sucrose phosphorylase However, the present invention does not limit the kind of enzyme, but may include various enzymes suitable for measurement of multi-item data. The enzyme reaction layers (301, 302) further include an electron transfer mediator that mediates electron transfer in addition to the enzyme. Specifically, the enzyme reaction layers 301 and 302 are prepared by mixing a solution of a water-soluble polymer, an enzyme, a stabilizer, an electron transfer agent, and the like in a predetermined ratio in an electrolyte solution, 21, 22), and then dried.

In the enzyme reaction layers 301 and 302 introduced into the electrode unit 18, glucose or fructose produced by the decomposition of pure glucose, pure fructose and sucrose in the sample and their oxidase , The dehydrogenase, the phosphorylated enzyme, and the electric signal generated by the enzyme reaction with the electron transfer mediator, that is, the electric current, are respectively measured, converted into the concentration value, and then the two converted values are summed up, The concentration of sugar, that is, the total sugar content, can be calculated quantitatively. Since the content of the enzyme reaction corresponds to a known technology, a detailed description thereof will be omitted in the present invention.

The electrode portion 18 on the insulating substrate 10 has one reference electrode 15 and a first working electrode 16 and a second working electrode 17 on the same side of one side of the reference electrode 15, May be arranged. In the enzyme reaction layers 301 and 302 on the electrodes 15, 16 and 17 of the electrode unit 18 arranged in this manner, the electrical signals generated by the above-described enzyme reaction and electrode reaction, that is, It is possible to quantitatively calculate individual multi-item data values existing in the sample injected into the respective enzyme reaction layers 301 and 302. [

The enzyme reaction layers 301 and 302 can be used to specifically identify the component data of the saliva, the sugar content, the microbial bacteria, the potassium, the E. coli, the residual chlorine, phosphorus, and nitrogen contained in the sample, Enzymes capable of reacting, and commonly include an electron transfer mediator. Examples of the electron transfer mediator include ferrocene, ferrocene derivatives, quinone, quinone derivatives, and hexaammineruthenium (III) chloride, and potassium ferricyanide potassium ferricyanide, and potassium ferrocyanide may be used.

The enzyme may be independently coated on the two exposed grooves 21 and 22 in which the electrode is exposed by preparing a mixed solution in which the electron transfer mediator, the water-soluble polymer, the stabilizer, etc. are mixed in the electrolytic solution at a predetermined ratio.

The enzymes and the electron transfer mediator of the enzyme reaction layers 301 and 302 react with sugar injected from the sample injection ports 41 and 42. That is, the sugar in the sample is oxidized by an oxidase or dehydrogenase, and the oxidase or dehydrogenase is reduced. At this time, the electron transport mediates oxidizing enzyme or dehydrogenase, and itself is reduced. The reduced electron transfer mediator loses electrons at the surface of the electrode to which a constant voltage is applied and is electrochemically reoxidized. Since the sugar content in the sample is proportional to the amount of current generated during the process of oxidizing the electron acceptor, the amount of current is supplied to the measuring device (not shown) contacting the lead terminal 11 connected to the electrodes 15, 16, ), The concentration of the sugar contained in the sample can be measured quantitatively.

The spacer 40 has two sample injection ports 41 and 42 into which a sample is injected and is formed so as to be vertically above the exposure grooves 21 and 22 in which the enzyme reaction layers 301 and 302 are formed, And the sample to be injected is in contact with the enzyme reaction layers 301 and 302.

The thickness of the spacer 40 should be at least equal to or greater than the thickness of the enzyme reaction layers 301 and 302. This is to facilitate injection of the sample into the enzyme reaction layers 301 and 302 of the sample. That is, it is easy to inject the sample due to the capillary phenomenon into the free space formed when the thickness of the spacer 40 is thicker than the thickness of the enzyme reaction layers 301 and 302.

The spacer 40 may be made of the same material as the insulating substrate 10 and an adhesive for bonding the spacer 40 and the insulating layer 20 may be hydrophobic to prevent the sample from impregnating. It is preferable to use a material.

When the sample is injected into the enzyme reaction layers (301, 302), the air exhaust layer (50) is arranged at regular intervals so as to effectively exhaust the air present in the reaction layer And an air outlet 51 is formed in an upper portion of the inner end of the sample inlet 41 and the sample inlet 42 to form a predetermined space.

That is, the air outlet 51 is formed in a region where the sample and the enzyme reaction layers 301 and 302 can not exist. The angle formed by the air outlet 51 and the spacer 40 is not limited, but is formed in a direction perpendicular to the direction of the sample injection ports 41 and 42.

When the sample starts to be sucked into the sample injection ports 41 and 42 of the spacer 40, the air existing around the enzyme reaction layers 301 and 302 is gradually pushed toward the ends of the sample injection ports 41 and 42 by the pressure Air is discharged to the outside in a direction perpendicular to the direction of the sample injection ports 41 and 42 through the air outlet 51 formed at the ends of the sample injection ports 41 and 42. As a result, The sample suction speed is increased.

The air discharge ports 51 may be formed separately from each other. In this case, the discharged air can be discharged through the air outlet 51 opened in both directions.

In this system, it is preferable that the spacer 40 and the air outlet 51 are formed in different planes. The air discharge layer 50 may be formed on the same plane as the spacer 40. In this case, measurement errors may be caused by contact between the enzyme reaction layers 301 and 302 and the air outlet 51, There is a problem that air discharge may be limited.

However, if the spacer 40 and the air outlet 51 are formed on different planes, as in the case of the air outlet 51 of the present invention, there is less concern that the sample will be caught in the hands when the sensor is removed after measurement, The amount of the sample can be reduced by the size of the enzyme reaction layers 301 and 302 irrespective of the size of the enzyme reaction layer 51. In addition, since the air outlet 51 can be increased regardless of the size of the enzyme reaction layers 301 and 302, efficient air discharge is possible. Accordingly, the movement of air as a gas is much faster than the movement of a liquid sample The air discharge speed is improved.

The air discharge layer 50 may be made of the same material as the insulating substrate 10 and the spacer 40 and may be made of an adhesive for adhering the air discharge layer 50 and the spacer 40, It is preferable to use a hydrophobic material.

The cover 60 is formed on the air discharge layer 50 to prevent foreign matter from flowing into the air discharge port 51. The material of the cover 60 is an insulating substrate 10, a spacer 40, 50). ≪ / RTI >

As the adhesive for bonding the cover 60 and the air discharge layer 50, it is preferable to use a hydrophobic material to prevent the sample from penetrating.

Hereinafter, the configuration and operation of the biosensor module 100 for measuring the sugar content measurement result of the sample in combination with the biosensor device having the above-described structure will be described.

5, the biosensor module 100 in the present system includes operational amplifiers AMP1 and AMP2, switches SW1 to SW3, an A / D converter 70, a microcontroller 80, and a display unit 110. That is, the operational amplifiers AMP1 and AMP2, the switches SW1 to SW3, the A / D converter 70 and the microcontroller 80 are implemented as the printed circuit board 90 of the biosensor module 100, (110) may be implemented on the outer surface of the case of the biosensor module (100).

A DC voltage source is connected to the non-inverting terminal (+) of each of the operational amplifiers AMP1 and AMP2 and one side of the first switch SW1 and the third switch SW3 is connected to the inverting terminal (-). The other side of the switches SW1 and SW3 may be connected to the first working electrode 16 of the biosensor and the lead terminal 11 connected to the second working electrode 17 coupled to a measuring device have. The operational amplifiers AMP1 and AMP2 supply power to the working electrodes 16 and 17 and detect the amount of current flowing through the working electrodes in accordance with the power supply and output the voltage as a voltage value.

The reference electrode 15 of the biosensor coupled to the measurement device (not shown) is grounded via the second switch SW2. The switches SW1 to SW3 are used for interrupting the current path of the circuit as switches to be switched on / off under the control of a microcontroller 80 to be described later.

The A / D converter 70 converts analog voltage values output from the operational amplifiers AMP1 and AMP2 into digital data.

The microcontroller 80 controls the overall operation of the biosensor module 100. For example, the microcontroller 80 controls the switches SW1 to SW3 to supply power to the first and second working electrodes 16 and 17 to check whether or not the electrode of the sample reaches the electrode, and after the incubation time The switches SW1 to SW3 are controlled to supply power to the first and second working electrodes 16 and 17 to read the concentration value corresponding to the detected voltage value to calculate an average value, It is compared with each density value to indicate whether an error has occurred or to display an average value. And a memory in which control program data for this purpose is stored is provided in the microcontroller 80. In addition, a table in which density values corresponding to the voltage values detected from the first and second working electrodes 16 and 17 are mapped is stored in the memory. The memory stores a calculation program for calculating multi-item data (i.e., sugar content, microbial bacteria, E. coli, blood glucose, urine components, needle components, etc.) of a sample.

The display unit 90 displays display data under the control of the microcontroller 80. In addition, the biosensor module 100 includes a user interface unit having a plurality of key buttons (120 of FIG. 7).

The mobile communication terminal 200 includes a measurement application and is connected to the connector 102 of the biosensor module 100. After the measurement application is executed, And displays it. The mobile communication terminal 200 is formed with a terminal portion (not shown) connected to the connector 102 of the biosensor module 100 in a lower border region. The terminal portion may have a number of pins corresponding to the connector 102 for data communication or power supply. For example, the terminal unit may have a number of other pins such as 8-pin, 30-pin, and the like, and the number of the pins may be different according to the manufacturer, so that it can be designed according to the type of the mobile communication terminal 200.

1, a mobile communication terminal 200 having a multi-item data measurement function according to the present invention may be a personal digital cellular (PDC) phone capable of operating an application, (Personal Handyphone System) phone, a CDMA-2000 (1X, 3X) phone, a WCDMA (Wideband CDMA) phone, a dual band / dual mode phone, a GSM PDAs (Personal Digital Assistants), Hand-Held PCs (Hand-Held PCs), and the like, which may include communication functions such as a standard for mobile phone, MBS (Mobile Broadband System) phone, DMB (Digital Multimedia Broadcasting) , A portable terminal such as a notebook computer, a laptop computer, a WiBro terminal, an MP3 player, an MD player, and an International Mobile Telecommunication-2000 (IMT-2000) terminal providing an international roaming service and an extended mobile communication service A handheld-based wireless communication device may be used.

The mobile communication terminal 200 includes a first power supply unit 210, a signal processing unit 220, a display unit 230, a first memory unit 240, a second power supply unit 250, a power control unit 260, And a first controller 270.

When the first power supply unit 210 is electrically connected to the connector 102, the first power supply unit 210 supplies power to the biosensor module 100. In the case of the biosensor module 100, since it requires a power supply voltage for transfer after measuring the multinomial data and is different from the power output specification of the conventional mobile communication terminal 200, the first power supply unit 210 (E.g., a battery) for supplying power to the biosensor module 100, as shown in FIG.

The signal processing unit 220 processes the multi-item measurement data measured by the biosensor module 100). For example, the signal processing unit 220 converts the salinity data measured by the biosensor module 100 into a digital signal or various electrical signals so that the salinity data can be displayed through the display unit 230.

The display unit 230 is a device for externally displaying signal-processed multi-item measurement data, and can use a display module provided in the mobile communication terminal 200. In general, the display unit 230 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, A three-dimensional display (3D display), or the like. In the present embodiment, the multi-item measurement data is generated and displayed as letters, numbers, symbols, and graphs using the display unit 230, and a message about the abnormality of the multi-item measurement data is output through the display unit 230 .

The first memory unit 240 is a device for storing the multi-item measurement data and the measurement application. The first memory unit 240 may store a program for processing and controlling the first control unit 270, and may temporarily store the input or output data. For example. The first memory unit 240 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, an SD or XD memory Or the like), RAM, ROM, or the like.

The second power supply unit 250 may include components other than the biosensor module 100 such as the signal processing unit 220, the display unit 230, the first memory unit 240, the power control unit 260, The control unit 270). The second power supply unit 250 is a device that supplies power in accordance with the conventional specifications in the normal case where the connector 102 of the biosensor module 100 is not coupled to the terminal of the mobile communication terminal 200.

The power control unit 260 is a device that detects the state of charge of the second power supply unit 250 and can select the operation of the first power supply unit 210 or the second power supply unit 250 according to the detection result. That is, the power control unit 260 may operate the first power supply unit 210 when the charging power of the second power supply unit 250 is less than the operation reference voltage of the biosensor module 100. The power control unit 260 may maintain the operation of the second power supply unit 250 when the charging power of the second power supply unit 250 is greater than the operation reference voltage of the biosensor module 100. The power control unit 210 may be designed to receive power from the battery of the second power supply unit 250 when the power of the dedicated battery of the first power supply unit 210 is exhausted.

The first control unit 270 includes a measurement application and executes a measurement application so that each component (i.e., the first power supply unit 210, the signal processing unit 220, the display unit 230, The first power supply unit 240, the second power supply unit 250, and the power supply control unit 260).

For example, the first control unit 270 receives a multi-item measurement value from the electrode unit of the biosensor module 100 and compares the multi-item measurement value with the data of the first memory unit 240. At this time, the first memory unit 240 transmits the data requested by the first controller 270 to the first controller 270. If the user operates the display unit 230 of the mobile communication terminal 200 to select the salt measurement mode, the first controller 270 calculates the salinity measurement value from the display unit 230 ) Output. In addition, when the operation is selected as the sodium measurement mode by the user's operation, the first control unit 270 sends the sodium measurement value to the output of the display unit 230 through calculation. In addition, when the operation is selected as the temperature display mode by the user's operation, the first controller 270 sends the temperature value to the output of the display unit 230. Then, the display unit 230 stores or updates the result sent from the first control unit 270 after the mathematical operation is performed on the first memory unit 240, and displays the result on the screen.

7 is a schematic diagram of a smartphone measurement system for multi-item measurement using a chip sensor according to another embodiment of the present invention.

Referring to FIG. 7, in a smartphone measurement system for multi-item measurement using a chip sensor according to another embodiment of the present invention, a communication module 110 'is provided at one end and an electrode unit The measurement application is installed and connected to the communication module 110 'via the local wireless communication network, and then measured by the electrode unit from the biosensor module 100' by execution of the measurement application And a mobile communication terminal 200 'for receiving and displaying the item data. At this time, any one of WIFI, Zigbee, Bluetooth, and NFC (Near Field Communication) may be used for the short-range wireless communication network, but the present invention is not limited thereto. In addition, the biosensor module 100 'includes a user interface unit having a plurality of key buttons 120.

Meanwhile, the body of the biosensor module 100 or 100 'may be formed of a polypropylene resin composition having excellent impact resistance against external impact or external environment. The polypropylene resin composition comprises a polypropylene random block copolymer composed of 75 to 95% by weight of an ethylene-propylene-alphaolefin random copolymer and 5 to 25% by weight of an ethylene-propylene block copolymer having an ethylene content of 20 to 50% by weight .

The polypropylene random block copolymer is preferably 75 to 95% by weight of the ethylene-propylene-alphaolefin random copolymer and 5 to 25% by weight of the ethylene-propylene block copolymer. The ethylene- When the content of the ethylene-propylene block copolymer is less than 5% by weight, the impact resistance is deteriorated. When the content of the ethylene-propylene block copolymer is more than 25% by weight, the rigidity is deteriorated do.

Wherein the ethylene-propylene-alpha olefin random copolymer comprises 0.5 to 7% by weight of ethylene and 1 to 15% by weight of an alpha-olefin having 4 to 5 carbon atoms and improves mechanical stiffness and heat resistance of the polypropylene resin composition, As shown in Fig. The ethylene content is preferably from 0.5 to 5% by weight, more preferably from 1 to 3% by weight. When the content of ethylene is less than 0.5% by weight, the whitening resistance is deteriorated. When the content is more than 7% by weight, . Further, the alpha olefin means any alpha olefin except ethylene and propylene, and is preferably butene. When the number of carbon atoms is less than 4 or more than 5, the reactivity of the alpha-olefin with the comonomer is low during the production of the random copolymer, making it difficult to produce the copolymer. Further, it may contain 1 to 15% by weight, preferably 1 to 10% by weight, and more preferably 3 to 9% by weight of the above-mentioned alpha olefin. If the amount of the alpha-olefin is less than 1% by weight, the crystallinity becomes higher than necessary and the transparency is lowered. When the amount of the alpha-olefin is more than 15% by weight, the crystallinity and rigidity are lowered and the heat resistance is significantly lowered.

In addition, the ethylene-propylene block copolymer contains 20 to 50% by weight of ethylene and imparts impact resistance to the polypropylene resin composition and enables finely dispersing, thereby imparting both whitening resistance and transparency. The ethylene content may preferably be 20 to 40% by weight, and if it is less than 20% by weight, the impact resistance is deteriorated. If it exceeds 50% by weight, the impact resistance and whitening resistance may be deteriorated.

The present invention is not limited to the above-described embodiment, but may be applied to other types of apparatuses such as a personal computer, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

10: Insulating substrate 11: Lead terminal
12: lead wire 15: reference electrode
16: first working electrode 17: second working electrode
18: electrode part 20: insulating layer
21, 22: Exposed groove 40: Spacer
41, 42: Sample inlet 50: Air outlet layer
51: air outlet 60: cover layer
70: A / D converter 80: Microcontroller
90: printed circuit board 100, 100 ': biosensor module
101: Case 102: Connector
103: terminal groove 110: display window
120: Display unit 200, 200 ': Mobile communication terminal
210: first power supply unit 220:
230: display unit 240: first memory unit
250: second power supply unit 260: power supply control unit
270: first control unit 301, 302: enzyme reaction layer

Claims (7)

A biosensor module 100 having a connector 102 at one end of the body and an electrode 18 connected to the connector 102 at the other end opposite to the one end to be contained in or contacted with the sample; And
Measurement data of the sample measured by the electrode unit 18 from the biosensor module 100 is received and displayed by executing the measurement application after the measurement application is connected to the connector 102 A mobile communication terminal,
The mobile communication terminal (200)
A first power supply unit 210 for supplying power to the biosensor module 100 when electrically connected to the connector 102;
A signal processing unit 220 for signal processing the multi-item measurement data measured by the biosensor module 100;
A display unit 230 for displaying the signal-processed multi-item measurement data externally;
A first memory unit 240 for storing the multi-item measurement data and the measurement application;
Power is supplied to the components other than the biosensor module 100 (that is, the signal processing unit 220, the display unit 230, the first memory unit 240, the power supply control unit 260, and the first control unit 270) A second power supply unit 250 for supplying power according to a preset specification when the connector 102 of the biosensor module 100 is not coupled to the terminal of the mobile communication terminal 200;
A power control unit 260 for sensing a state of charge of the second power supply unit 250 and selecting an operation of the first power supply unit 210 or the second power supply unit 250 according to a detection result; And
And a first control unit (270) that controls the operation of each component by executing the measurement application,
The power control unit 260 operates the first power supply unit 210 when the charging power of the second power supply unit 250 is less than the operation reference voltage of the biosensor module 100, The operation of the second power supply unit 250 is maintained when the charging power of the second power supply unit 250 is greater than the operation reference voltage of the biosensor module 100,
The mobile communication terminal 200 includes a terminal unit,
The biosensor module 100 is connected to the terminal unit through a connector 102,
The biosensor module 100 includes operational amplifiers AMP1 and AMP2 used as a current-to-voltage converter, switches SW1 to SW3, an A / D converter 70, a microcontroller 80, and a display unit 110 Including,
A DC voltage source is connected to the non-inverting terminal (+) of each of the operational amplifiers AMP1 and AMP2. One of the first switch SW1 and the third switch SW3 is connected to the inverting terminal (-),
The other side of the first switch SW1 and the third switch SW3 is connected to the first working electrode 16 of the biosensor and the lead terminal 11 connected to the second working electrode 17 And,
The operational amplifiers AMP1 and AMP2 supply power to the working electrodes 16 and 17 and detect the amount of current flowing through each of the working electrodes in accordance with the power supply and output the voltage as a voltage value,
The reference electrode 15 of the biosensor coupled to the measurement device (not shown) is grounded via the second switch SW2,
The switches SW1 to SW3 are switches used for on / off control of the circuit under the control of the microcontroller 80,
The A / D converter 70 converts the analog voltage value output from the operational amplifiers AMP1 and AMP2 into digital data,
The microcontroller 80 controls the overall operation of the biosensor module 100 and supplies power to the first and second working electrodes 16 and 17 by controlling the switches SW1 to SW3, And controls the switches SW1 to SW3 after the incubation time to supply power to the first and second working electrodes 16 and 17 to read the concentration value corresponding to the detected voltage value, The calculated average value is compared with the respective density values to indicate whether an error has occurred or to display an average value,
The memory is provided with a table in which concentration values corresponding to the voltage values detected from the first and second working electrodes 16 and 17 are mapped and a table in which the multi-item data of the sample (i.e., sugar content, microbial bacteria, A component of the needle, a component of the needle, etc.)
The display unit 110 displays display data under the control of the microcontroller 80,
Wherein the biosensor module (100) comprises a user interface unit having a plurality of key buttons (120).
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