CN201237595Y

CN201237595Y - Exhalation diabetes detection apparatus

Info

Publication number: CN201237595Y
Application number: CNU2008200384711U
Authority: CN
Inventors: 袁源; 谢震环
Original assignee: Xuzhou Medical College
Current assignee: Xuzhou Medical College
Priority date: 2008-06-23
Filing date: 2008-06-23
Publication date: 2009-05-13
Anticipated expiration: 2018-06-23

Abstract

The utility model relates to a diabetes breath detection device, which consists of a carbon monoxide detection circuit, an electric field reaction unit and a singlechip circuit; within the electric field reaction unit, a carbon monoxide sensor connected with the carbon monoxide detection circuit is arranged; the output end of the carbon monoxide detection circuit is connected with the input end of the singlechip. Through detecting content of acetone in the breath of a diabetes patient, symptom of the diabetes patient can be diagnosed, thus avoiding errors caused by manual operation; the structure is simple; the operation is convenient, fast and effective; extensive practicability is possessed.

Description

Expiration diabetes pick-up unit

Technical field

The utility model relates to a kind of medical pick-up unit, the expiration diabetes pick-up unit that especially a kind of diabetes patient of being applicable to diagnoses.

Background technology

Diagnosis of diabetes can be finished by the content of acetone that detects in patient's expiration, the method that detects acetone at present mainly is a chemical analysis method, testing process is by manually finishing, this method labor intensive, and may be because artificial incorrect operation make testing result inaccurate.

The utility model content

The purpose of this utility model is according to the deficiency in the prior art, provides a kind of simple in structure, easy to operate, and speed is fast, effective expiration diabetes fast testing apparatus.

For achieving the above object, the technical solution of the utility model: the device that detects content of acetone is made of Carbon Monoxide Detection circuit, electric field reaction unit and single chip circuit.

Described Carbon Monoxide Detection circuit is made of three electrode sensors (M), operational amplifier (IC1, IC2), resistance (R1, R2, R3, R4, R5, R6) and electric capacity (C1, C2, C3).Three electrodes of three electrode sensors are respectively counter electrode (B), reference electrode (R) and working electrode (W).The counter electrode B of three electrode sensor M connects the output terminal of capacitor C 1, C2 and operational amplifier IC2; The reference electrode R of three electrode sensor M connects resistance R 1, and the other end of R1 connects capacitor C 1 and resistance R 2, and the other end of R2 connects the reverse input end of capacitor C 2 and operational amplifier IC2; The working electrode W of three electrode sensor M connects resistance R 5, and the other end of R5 connects the reverse input end of resistance R 4, capacitor C 3 and operational amplifier IC1, and the other end of R4 and C3 all is connected the output terminal of IC1; The positive input of operational amplifier IC1 connects resistance R 6, and the other end of R6 connects the negative pole of power supply; The positive input of operational amplifier IC2 connects resistance R 3, and the other end of R3 connects the positive pole of power supply; The output terminal OUT of whole Carbon Monoxide Detection circuit connects the input end of single chip circuit.: described electric field reaction unit is made of coil, coating of titanium dioxide, high frequency voltage source and container.Coil is wrapped on the container, and two of coil terminates at the two poles of the earth of high frequency voltage source, and coating of titanium dioxide is coated in the inwall of container.

Beneficial effect: the measurement of the content of acetone during the utility model is exhaled by human body realizes that diabetes detect.The acetone steam scribbles the closed container of titanium deoxide catalyst by inwall, its active increasing under the effect of constant temperature high-frequency electric field, reaction generates carbon monoxide, utilize the photochemistry carbon monoxide transducer to detect again, after measuring carbon monoxide content information is sent to single-chip microcomputer, after single-chip microcomputer is handled detection information, draw content of acetone in the human body expiration, and analysis result is presented on the charactron.Acetone during the utility model can be exhaled by human body detects, and realizes diagnosis of diabetes, can exempt the error that manually-operated causes, it is simple in structure, and is easy to operate, effectively, has practicality widely fast.

Description of drawings

Fig. 1 is the system architecture diagram of expiration diabetes pick-up unit of the present utility model;

Fig. 2 is an electric field reaction unit structural representation of the present utility model;

Fig. 3 is a Carbon Monoxide Detection circuit diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

Shown in Figure 1, the Carbon Monoxide Detection circuit output end is connected with the input end of single-chip microcomputer, and purpose is detected carbon monoxide content information is sent in the single-chip microcomputer; Single-chip microcomputer carries out the A/D conversion to it after receiving carbon monoxide content information, calculate the content of acetone in the former expiration again; The output terminal of single-chip microcomputer is connected with the input end of charactron chip for driving, and purpose is control signal and data are sent to the charactron chip for driving; The output terminal of charactron chip for driving is connected with the Duan Xuanduan of 4 LED charactrons, is used for exporting data parallel to 4 LED charactrons; The output terminal of single-chip microcomputer also is connected with the position choosing end of 4 LED charactrons, and purpose is to select information to export 4 LED charactrons to the position.The model of single-chip microcomputer is ATMEG8, and charactron chip for driving model is 74LS595, and 4 LED charactron models are LG5641AH.

Figure 2 shows that the schematic diagram of electric field reaction unit: container L outer wall is wound with coil X; The two ends of coil X connect the two poles of the earth of high frequency voltage source G, will produce the constant temperature high-frequency electric field after the energising in container L, and the constant temperature high-frequency electric field can make the active increase of the acetone in the expiration, thereby decomposites carbon monoxide; The inwall of container L scribbles T, plays catalytic action, and the process that makes acetone be decomposed into carbon monoxide is quickened; Sensor M is installed in the inside of container L, is used to detect the concentration information of carbon monoxide, and sensor M becomes low current signal with the carbonomonoxide concentration information translation, and this low current signal is sent to the Carbon Monoxide Detection circuit by lead.

Shown in Figure 3, the Carbon Monoxide Detection circuit is made of 1 three electrode sensor M, 2 operational amplifier IC1, IC2,6 resistance R 1, R2, R3, R4, R5, R6 and capacitor C 1, C2, C3; The counter electrode B of three electrode sensor M connects the output terminal of capacitor C 1, C2 and operational amplifier IC2; The reference electrode R of three electrode sensor M connects resistance R 1, and the other end of R1 connects capacitor C 1 and resistance R 2, and the other end of R2 connects the reverse input end of capacitor C 2 and operational amplifier IC2; The working electrode W of three electrode sensor M connects resistance R 5, and the other end of R5 connects the reverse input end of resistance R 4, capacitor C 3 and operational amplifier IC1, and the other end of R4 and C3 all is connected the output terminal of IC1; The positive input of operational amplifier IC1 connects resistance R 6, and the other end of R6 connects the negative pole of power supply; The positive input of operational amplifier IC2 connects resistance R 3, and the other end of R3 connects the positive pole of power supply; The output terminal OUT of whole Carbon Monoxide Detection circuit connects the input end of single chip circuit.

The effect of working electrode W is to produce corresponding weak current after sensor M detects the concentration information of carbon monoxide, and this electric current is sent to the reverse input end of operational amplifier IC1 by resistance R 5, exports the input end of single-chip microcomputer after IC1 amplifies to; Resistance R 6 be connected on operational amplifier IC1 just as between input end and the power cathode, be connected between the reverse input end and output terminal of operational amplifier IC1 after resistance R 4 and capacitor C 3 parallel connections, the enlargement factor that the resistance value of adjusting R4 and R6 can be regulated the IC1 circuit, C3 is used to reduce high frequency noise; Counter electrode B is connected on the output terminal of operational amplifier IC2, and B receives the voltage of IC2 output, and this voltage is the operating voltage of sensor M; Reference electrode R is connected to the reverse input end of operational amplifier IC2 by resistance R 1, R2, and reference electrode R provides a constant voltage for working electrode W, thereby guarantees the output signal bias free of sensor M; Regulating the resistance value of resistance R 1, R2, R3 can the adjustment electrode B and the magnitude of voltage at reference electrode R two places, and capacitor C 1, C2 are used to reduce high frequency noise.

Claims

1, a kind of expiration diabetes pick-up unit, it is characterized in that: it is made of Carbon Monoxide Detection circuit, electric field reaction unit and single chip circuit, be provided with the carbon monoxide transducer that links to each other with the Carbon Monoxide Detection circuit in the electric field reaction unit, the output terminal of Carbon Monoxide Detection circuit is connected with the input end of single-chip microcomputer.

2, expiration diabetes pick-up unit according to claim 1, it is characterized in that: described electric field reaction unit is made of coil (X), high frequency voltage source (G) and container (L), coil twines (X) on container (L), two of coil (X) terminates at the two poles of the earth of high frequency voltage source (G), apply titanium dioxide layer (T) on the inwall of container (L), the inside of container (L) is provided with sensor (M).

3, expiration diabetes pick-up unit according to claim 1 is characterized in that: described Carbon Monoxide Detection circuit is made of three electrode sensors (M), operational amplifier IC1, IC2, resistance R 1, R2, R3, R4, R5, R6 and capacitor C 1, C2, C3; The counter electrode (B) of three electrode sensors (M) connects the output terminal of capacitor C 1, C2 and operational amplifier IC2; The reference electrode R of three electrode sensors (M) connects resistance R 1, and the other end of R1 connects capacitor C 1 and resistance R 2, and the other end of R2 connects the reverse input end of capacitor C 2 and operational amplifier IC2; The working electrode of three electrode sensor M (W) connects resistance R 5, and the other end of R5 connects the reverse input end of resistance R 4, capacitor C 3 and operational amplifier IC1, and the other end of R4 and C3 is connected the output terminal of IC1; The positive input of operational amplifier IC1 connects resistance R 6, and the other end of R6 connects the negative pole of power supply; The positive input of operational amplifier IC2 connects resistance R 3, and the other end of R3 connects the positive pole of power supply.