CN212180680U - Modularized alcohol detection device - Google Patents
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- CN212180680U CN212180680U CN201821598733.XU CN201821598733U CN212180680U CN 212180680 U CN212180680 U CN 212180680U CN 201821598733 U CN201821598733 U CN 201821598733U CN 212180680 U CN212180680 U CN 212180680U
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Abstract
The utility model discloses a modularized alcohol detection device, which comprises a shell module, a human breath collection device and an alcohol detection module circuit, wherein the human breath collection device is arranged in the shell module and is used for collecting quantitative exhaled gas of a human body; the alcohol detection module is connected with the human breath collection device, and the alcohol detection module circuit is used for detecting alcohol in the gas exhaled by the human body; the alcohol detection module circuit is provided with a communication module, and the communication module is used for transmitting an alcohol detection result to external equipment. The modularized alcohol detection device is high in detection precision, in addition, the modularized alcohol detection device is communicated with the external module through the communication interface, and a detection result is transmitted to the external module, so that the modularized alcohol detection device can be embedded into other electronic equipment to be used and becomes an independent functional module, is small in size and good in universality, and can be applied to detection of alcohol in different alcohol detection equipment.
Description
Technical Field
The utility model relates to an alcohol detects technical field, especially relates to a modularization alcohol detection device.
Background
The alcohol detector is used for detecting whether a human body takes alcohol and the alcohol intake degree. The alcohol tester is mainly applied to the transportation industry, underground mining and the like, and is an alcohol tester which is held by the traffic police at present.
The existing alcohol detector comprises various functional modules including control keys of a display screen and the like, and is large in size, relatively fixed in input and output interfaces and low in universality. In addition, the alcohol detection precision is low.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the present invention is to provide a modular alcohol detection device.
In order to achieve the above object, an embodiment of the present invention provides a modular alcohol detection device, the modular alcohol detection device includes: a housing module;
the human body breath collecting device is arranged in the shell module and is used for collecting quantitative human body breath;
the alcohol detection module circuit is connected with the human breath acquisition device and is used for detecting alcohol in the exhaled gas of the human body;
the alcohol detection module circuit is provided with a communication module, and the communication module is used for transmitting an alcohol detection result to external equipment.
Further, according to an embodiment of the present invention, the communication module includes wired communication or wireless communication; the wired communication comprises UART and/or RS232 protocol communication, and the wireless communication comprises Bluetooth and/or wifi protocol communication.
Further, according to an embodiment of the present invention, an air blowing channel is disposed on the housing module, and the air blowing channel is used for being connected with an air blowing pipe;
the human body expiration collection system comprises: the air bag is provided with an air bag air inlet, the air inlet of the electrochemical alcohol sensor is communicated with the air outlet of the air blowing channel, the air outlet of the electrochemical alcohol sensor is communicated with the air inlet of the air bag, and a piston of the electromagnet is connected with the air bag and used for drawing and discharging the air bag to enable the air bag to be pulled to suck in and discharge the human body to exhale.
Further, according to the utility model discloses an embodiment, the alcohol detection module circuit includes:
the alcohol detection circuit is connected with the electrochemical alcohol sensor electrode and is used for detecting the alcohol concentration of the quantitative human body exhaled gas extracted by the air bag;
and the microprocessor is electrically connected with the alcohol detection circuit and is used for receiving the detection processing output of the alcohol detection circuit and outputting the detection result to external equipment through the communication interface.
Further, according to the utility model discloses an embodiment still includes human breath collection drive circuit, human breath collection drive circuit respectively with microprocessor and electro-magnet, human breath collection drive circuit is used for output atmospheric pressure collection drive signal under microprocessor's the control, it is right the electro-magnet carries out human exhalation gas collection drive.
Further, according to an embodiment of the present invention, the air blowing pressure detection circuit further comprises an air blowing pressure detection circuit, wherein the air blowing pressure detection circuit comprises a pressure sensor and a pressure front-end processing circuit; the pressure sensor is connected with the air blowing channel, the pressure sensor is further connected with the pressure front end, the pressure sensor is used for detecting the pressure change of air blown by a human body, the pressure change is transmitted to the microcontroller after being processed by the pressure front end, and whether air is blown or not and the flow rate of the air blown are judged by the microcontroller.
Further, according to the utility model discloses an embodiment still includes temperature sensor, temperature sensor with microprocessor connects, temperature sensor is used for detecting the temperature to will detect the temperature transmission extremely microprocessor, microprocessor carry out temperature compensation to the data that survey through temperature information.
Further, according to an embodiment of the present invention, the alcohol detection circuit includes:
an electrochemical alcohol sensor;
a front-end signal processing circuit which comprises an integrated operational amplifier U1, a resistor R7, a resistor R3, a resistor R8, a resistor R39 and a resistor R5, one end of the resistor R7 is connected with one output end of the electrochemical alcohol sensor, the other end of the resistor R7 is connected with the negative end of the integrated operational amplifier U1, one end of the resistor R3 is connected with the negative end of the integrated operational amplifier U1, the other end of the resistor R3 is connected with the output end of the integrated operational amplifier U1, one end of the resistor R8 is connected with the other end of the electrochemical alcohol sensor, one end of the resistor R8 is connected with the positive end of the integrated operational amplifier U1, one end of the resistor R39 is connected with the positive end of the integrated operational amplifier U1, the resistor R39 is connected with the reference ground, one of the resistor R5 is connected with the output end of the integrated operational amplifier U1, and the resistor R5 is connected with the signal acquisition end of the microprocessor.
Further, according to the utility model discloses an embodiment, the alcohol detection circuit still includes:
and the signal input end of the analog-to-digital conversion module is connected with the signal output end of the front-end signal processing circuit, the data output end of the analog-to-digital conversion module is connected with the microprocessor, and the analog-to-digital conversion module is used for performing analog-to-digital conversion on the output signal of the front-end signal processing circuit and transmitting the output signal to the microprocessor.
Further, in accordance with an embodiment of the present invention, the electrochemical alcohol sensor is a chemical combustion electrochemical alcohol sensor.
Further, according to an embodiment of the present invention, the pressure front end processing circuit includes:
the first signal processing circuit comprises an integrated operational amplifier U11, a resistor R104, a resistor R105, a resistor R106, a resistor R107 and a resistor R114; one end of the resistor R104 is connected with one output end of the pressure sensor, the other end of the resistor R104 is connected with the negative end of the integrated operational amplifier U11, one end of the resistor R105 is connected with the negative end of the integrated operational amplifier U11, the other end of the resistor R105 is connected with the output end of the integrated operational amplifier U11, one end of the resistor R106 is connected with the other end of the pressure sensor, the other end of the resistor R106 is connected with the positive end of the integrated operational amplifier U11, one end of the resistor R107 is connected with the positive end of the integrated operational amplifier U11, the other end of the resistor R107 is connected with a reference ground, one end of the resistor R114 is connected with the output end of the integrated operational amplifier U11, and the other end of the resistor R114 is a signal output end of the first signal processing circuit;
the second signal processing circuit comprises an integrated operational amplifier U12, a resistor R108, an adjustable resistor V1, a resistor R109, a resistor R112 and a resistor R113; one end of the resistor R108 is connected with a first power supply voltage VDD, the other end of the resistor R108 is connected with a first end and an adjustable end of the adjustable resistor V1, a second end of the adjustable resistor V1 is connected with a reference ground, one end of the resistor R109 is connected with the adjustable end of the adjustable resistor V1, the other end of the resistor R109 is connected with a negative end of the integrated operational amplifier U12, one end of the resistor R112 is connected with a negative end of the integrated operational amplifier U12, the other end of the resistor R112 is connected with an output end of the integrated operational amplifier U12, the integrated operational amplifier U12 is connected with an output end of the first signal processing circuit, one end of the resistor R113 is connected with an output end of the integrated operational amplifier U12, and the other end of the resistor R113 is connected with a voltage collecting end of the microprocessor.
The example of the utility model carries out the gaseous collection of the ration of the people's of being surveyed exhalation through human expiration collection system and carries out the measuring of alcohol concentration to quantitative gas through alcohol detection module circuit for it is high to detect the precision, in addition, communicates with external module through communication module, transmits the testing result to external module, makes modularization alcohol detection device can imbed and use in other electronic equipment, becomes an independent functional module, and the volume is less, and the commonality is better, can use and carry out the measuring of alcohol in the alcohol check out test set of difference.
Drawings
FIG. 1 is a schematic structural diagram of a modular alcohol detection device according to an embodiment of the present invention;
FIG. 2 is an exploded view of the modular alcohol testing device according to the present invention;
FIG. 3 is a block diagram of an alcohol detection module of the modular alcohol detection device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alcohol detection circuit of the modular alcohol detection device according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a blowing pressure detection circuit of the modular alcohol detection device according to the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a human breath collecting and driving circuit of the modular alcohol detection device according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a temperature sensor of the modular alcohol detection device according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a circuit configuration of a microprocessor of the modular alcohol detection device according to the present invention;
FIG. 9 is a schematic diagram of a wired communication module circuit of the modular alcohol detection device according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a wireless communication interface circuit structure of the modular alcohol detection device according to the embodiment of the invention.
Reference numerals:
an alcohol detection module 01;
a housing module 10;
an air blowing channel 101;
a human breath collection device 20;
an air blowing pipe 201;
an electrochemical alcohol sensor gas path 202;
an electrochemical alcohol sensor gas path gas inlet 2021;
an electromagnet 203;
an air bag 204;
an alcohol detection module circuit 30;
a microprocessor 301;
an alcohol detection circuit 302;
a human breath collection drive circuit 303;
an air blowing pressure detection circuit 304;
the pressure sensor 3041;
a temperature sensor 305;
a communication module 306;
a communication interface 307;
an upper computer 40;
the person under test 50.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and 2, the utility model provides a modularization alcohol detection device, include: the alcohol detection device comprises a shell module 10, a human breath collecting device and an alcohol detection module circuit 30, wherein the human breath collecting device is installed in the shell module 10 and is used for collecting quantitative human breath; the housing module 10 is a miniaturized module so that the housing module 10 can be conveniently embedded into other equipment to be used as a functional module. When the modularized alcohol detection device is used, the human body expired air collection device is in contact with an expired air port of a detected person through the air blowing pipe 201 and is used for collecting quantitative human body expired air.
The alcohol detection module is connected with the human breath collection device, and the alcohol detection module circuit 30 is used for detecting alcohol in the gas exhaled by the human body; when the detected person drinks, the expired gas of the detected person contains alcohol gas, and the alcohol detection module is used for detecting the alcohol in the quantitative expired gas. In one embodiment of the present invention, a chemical combustion alcohol sensor may be used to detect alcohol content. The alcohol content information can be converted into corresponding electric quantity information by the alcohol sensor, for example, voltage information or current information matched with the alcohol content. Because the output voltage signal or the current signal is in a proportional relation with the alcohol content, the alcohol detection module outputs the voltage information or the current information according to the alcohol sensor so as to obtain the alcohol content of the quantitative exhaled gas, and the alcohol concentration of the exhaled gas of the detected person can be obtained according to the alcohol content and the proportion of the quantitative exhaled gas.
The alcohol detection module circuit 30 is provided with a communication module 306, and the communication module 306 is used for transmitting an alcohol detection result to an external device. Used in the utility model discloses mainly use as a functional module in the modularization equipment is embedded into other equipment. The alcohol concentration data obtained by the alcohol detection module circuit 30 may be transmitted to other devices for use via the communication module 306. As shown in fig. 1, in the wired communication, the alcohol detection module circuit 30 communicates with the other devices through the communication interface 307 to perform data transmission.
Referring to fig. 9 and 10, the communication module includes wired communication or wireless communication; the wired communication comprises UART and/or RS232 protocol communication, and the wireless communication comprises Bluetooth and/or wifi protocol communication. As shown in fig. 9, during wired communication, the detection result output by the microprocessor is transmitted to other devices through an RS232 protocol conversion chip; as shown in fig. 10, during wireless communication, the detection result output by the microprocessor is transmitted to other devices through the interface connected to the wireless communication module
The example of the utility model carries out the gaseous collection of the ration of the people's of being surveyed exhalation through human expiration collection system and carries out the measuring of alcohol concentration to quantitative gas through alcohol detection module circuit 30 for it is high to detect the precision, in addition, communicates with external module through communication module 307, transmits the testing result to external module, makes modularization alcohol detection device can imbed and use in other electronic equipment, becomes an independent functional module, can use and carry out the measuring of alcohol in the different alcohol check out test set.
Referring to fig. 1 and 2, an air blowing channel is arranged on the housing module 10, and the air blowing channel is used for being connected with an air blowing pipe 201; as shown in fig. 2, the air blowing channel is provided at a position on one side of the housing module 10, and the air blowing channel is a hollow structure and is connected with an air blowing pipe 201 to collect the exhaled air of the person to be tested.
The human body expiration collection system comprises: the air blowing device comprises an electrochemical alcohol sensor air path 202, an air bag 204 and an electromagnet 203, wherein an electrochemical alcohol sensor is arranged in the electrochemical alcohol sensor air path 202, the air bag is provided with an air bag air inlet, the air inlet of the electrochemical alcohol sensor air path 202 is communicated with an air outlet of the air blowing channel 101, an air outlet of the electrochemical alcohol sensor air path is communicated with the air inlet of the air bag 204, and a piston of the electromagnet 203 is connected with the air bag 204 and used for drawing and discharging the human body breath by pulling the air bag 204 through the electromagnet 203. As shown in fig. 2, the electrochemical alcohol sensor gas circuit 202 is disposed on the circuit board of the alcohol detection module circuit 30, and the gas inlet 2021 of the electrochemical alcohol sensor gas circuit 202 is communicated with the gas outlet of the blowing channel 101 through a joint. So as to collect the expired air of the detected person, namely, under the action of the electromagnet 203, the electromagnet 203 pushes and pulls the air bag 204 to extract and discharge the air. The electromagnet 203 is mounted on the circuit board of the alcohol detection module circuit 30. When alcohol detection is carried out, the electromagnet 203 drives the piston to move to push and pull the air bag to extract quantitative gas for detection.
Referring to fig. 3, the alcohol detection module circuit 30 includes: the alcohol detection circuit 302 is connected with the electrochemical alcohol sensor electrode, and the alcohol detection circuit detects the alcohol concentration of the quantitative human body exhaled gas extracted by the air bag 204; the electrochemical alcohol sensor detects and converts the extracted quantitative gas into an electric signal to be output, and the electric signal is processed and output to the microprocessor 301 through the alcohol detection circuit.
The microprocessor 301 is electrically connected to the alcohol detection circuit 302, and the microprocessor 301 is configured to receive the detection processing output of the alcohol detection circuit 302 and output the detection result to an external device through the communication interface 307. The microprocessor 301 performs inspection sampling on the electrical signal output by the alcohol detection circuit 302, and obtains the alcohol concentration according to the sampling result. And outputting the concentration of the alcohol to an external device so that the external device can use data conveniently.
Referring to fig. 3 and 6, the breath collection device further comprises a human breath collection driving circuit 303, the human breath collection driving circuit 303 is respectively connected with the microprocessor 301 and the electromagnet 203, and the human breath collection driving circuit 303 is used for outputting an air pressure collection driving signal under the control of the microprocessor 301 to collect and drive the exhaled air of the electromagnet 203. The human breath collecting and driving circuit 303 outputs an air pressure driving signal under the action of the microprocessor 301, and the air pressure driving signal drives the electromagnet 203. The electromagnet 203 is driven to start pushing the airbag 204 to perform gas extraction and gas discharge. Referring to fig. 6, the human breath collecting and driving circuit 303 includes a power supply integrated circuit U1 and its peripheral circuits, and the power supply integrated circuit U1 is configured to perform voltage conversion on the power supply voltage of the modular alcohol detection apparatus, so as to output the power supply voltage required by the electromagnet 203, so as to drive the electromagnet 203. As shown in fig. 6, the electromagnet 203 is provided at an interface J1, and the electromagnet 203 is subjected to drive control of pumping gas by a MOS transistor Q8. For example, the microprocessor 301 controls the MOS transistor Q8 to be turned on to push the electromagnet 203 to push the airbag 204 to extract gas, or controls the MOS transistor Q8 to be turned off to stop the electromagnet 203 from pushing the airbag 204 to extract gas.
Referring to fig. 3 and 5, the device further includes an air blowing pressure detection circuit, wherein the air blowing pressure detection circuit 304 includes a pressure sensor and a pressure front-end processing circuit; the pressure sensor 3041 is connected to the air blowing channel 101, the pressure sensor 3041 is further connected to the pressure front end, the pressure sensor 3041 is configured to detect a pressure change of air blown by a human body, transmit the pressure change to the microcontroller 301 after the pressure front end is processed, and determine whether air is being blown and a flow rate of the air blown by the microcontroller 301. The electromagnet 203 is controlled to push the air bag 204 to start to extract a certain amount of exhaled gas of the human body. The pressure of the gas exhaled by the human body is converted into an electrical signal by the pressure sensor 3041 and output, the electrical signal is processed by the pressure front-end processing circuit and then output to the microprocessor 301, and the microprocessor 301 determines whether the gas is blowing and the flow rate of the blowing gas by sampling the electrical signal processed by the pressure front-end processing circuit. If the tested person is blowing air and the air flow is large enough, the air can be extracted for detection. At this time, the microcontroller controls the electromagnet 203 to drive the air bag to extract a fixed amount of exhaled gas from the human body.
Referring to fig. 3 and 7, the temperature sensor 305 is further included, the temperature sensor 305 is connected to the microprocessor 301, the temperature sensor 305 is configured to detect a temperature and transmit the detected temperature to the microprocessor 301, and the microprocessor performs temperature compensation on the detected data according to temperature information. The temperature sensor 305 is used for detecting temperature, and transmitting a temperature detection result to the microprocessor 301, the microprocessor 301 adjusts an output result of the alcohol concentration, and performs temperature compensation on the detected data through temperature information, so as to make the result of the alcohol concentration as close as possible to a real value, thereby reducing a detection error.
Referring to fig. 4, the alcohol detection circuit 302 includes: the front-end signal processing circuit comprises an integrated operational amplifier U1, a resistor R7, a resistor R3, a resistor R8, a resistor R39 and a resistor R5, wherein one end of the resistor R7 is connected with an output end of the electrochemical alcohol sensor, the other end of the resistor R7 is connected with a negative end of the integrated operational amplifier U1, one end of the resistor R3 is connected with a negative end of the integrated operational amplifier U1, the other end of the resistor R3 is connected with an output end of the integrated operational amplifier U1, one end of the resistor R8 is connected with the other end of the electrochemical alcohol sensor, one end of the resistor R8 is connected with a positive end of the integrated operational amplifier U1, one end of the resistor R39 is connected with a positive end of the integrated operational amplifier U1, the resistor R39 is connected with a reference ground, one end of the resistor R5 is connected with an output end of the integrated operational amplifier U1, the resistor R5 is connected with the signal acquisition end of the microprocessor 301. The integrated operational amplifier U1, the resistor R7, the resistor R3, the resistor R8, the resistor R39, and the resistor R5 form a proportional operational amplifier circuit, and perform operational processing on the electrical signal output by the electrochemical alcohol sensor, for example, adjust the output level value of the electrochemical alcohol sensor, so as to facilitate the voltage sampling processing performed by the microprocessor 301.
Referring to fig. 2, the alcohol detection circuit 302 further includes: and the signal input end of the analog-to-digital conversion module is connected with the signal output end of the front-end signal processing circuit, the data output end of the analog-to-digital conversion module is connected with the microprocessor 301, and the analog-to-digital conversion module is used for performing analog-to-digital conversion on the output signal of the front-end signal processing circuit and transmitting the output signal to the microprocessor 301. The analog-to-digital conversion module comprises an analog-to-digital converter U8, and the analog-to-digital converter U8 is a high-precision analog-to-digital converter, so that high-precision data sampling is performed on an output level signal of the front-end signal processing circuit, and sampling errors are reduced. And transmits the sampled data to the microprocessor 301.
Further, in an embodiment of the present invention, the electrochemical alcohol sensor is a chemical combustion electrochemical alcohol sensor. The chemical combustion type electrochemical alcohol sensor can be used for enabling the output alcohol detection data to be more accurate.
Referring to fig. 5, the pressure front end processing circuit includes: the circuit comprises a first signal processing circuit and a second signal processing circuit, wherein the first signal processing circuit comprises an integrated operational amplifier U11, a resistor R104, a resistor R105, a resistor R106, a resistor R107 and a resistor R114; one end of the resistor R104 is connected to an output end of the pressure sensor 3041, the other end of the resistor R104 is connected to a negative end of the integrated operational amplifier U11, one end of the resistor R105 is connected to a negative end of the integrated operational amplifier U11, the other end of the resistor R105 is connected to an output end of the integrated operational amplifier U11, one end of the resistor R106 is connected to the other end of the pressure sensor 3041, the other end of the resistor R106 is connected to a positive end of the integrated operational amplifier U11, one end of the resistor R107 is connected to a positive end of the integrated operational amplifier U11, the other end of the resistor R107 is connected to a reference ground, one end of the resistor R114 is connected to an output end of the integrated operational amplifier U11, and the other end of the resistor R114 is a signal output end of the first signal processing circuit; the integrated operational amplifier U11, the resistor R104, the resistor R105, the resistor R106, the resistor R107, and the resistor R114 form a proportional operational amplifier circuit, which performs an operational process on the electrical signal output by the pressure sensor 3041, for example, adjusting the output level value of the pressure sensor 3041, so as to facilitate the second signal processing circuit to perform a one-step process.
The second signal processing circuit comprises an integrated operational amplifier U12, a resistor R108, an adjustable resistor V1, a resistor R109, a resistor R112 and a resistor R113; one end of the resistor R108 is connected with a first power supply voltage VDD, the other end of the resistor R108 is connected with a first end and an adjustable end of the adjustable resistor V1, a second end of the adjustable resistor V1 is connected with a reference ground, one end of the resistor R109 is connected with an adjustable end of the adjustable resistor V1, the other end of the resistor R109 is connected with a negative end of the integrated operational amplifier U12, one end of the resistor R112 is connected with a negative end of the integrated operational amplifier U12, the other end of the resistor R112 is connected with an output end of the integrated operational amplifier U12, the integrated operational amplifier U12 is connected with an output end of the first signal processing circuit, one end of the resistor R113 is connected with an output end of the integrated operational amplifier U12, and the other end of the resistor R113 is connected with a voltage collecting end of the microprocessor 301. The integrated operational amplifier U12, the resistor R108, the adjustable resistor V1, the resistor R109, the resistor R112, and the resistor R113 form an adjustable proportional operational amplifier circuit, which performs operational processing on the electrical signal output by the first signal processing circuit, for example, adjusting the output level value of the pressure sensor 3041, so as to facilitate the processing of the processor in one step. By adjusting the voltage value of the adjustable resistor V1, the output voltage value of the second signal processing circuit can be adjusted to trigger the microprocessor 301 to start controlling the electromagnet 203 to perform air suction detection.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (7)
1. A modular alcohol testing device comprising;
a housing module;
the human body breath collecting device is arranged in the shell module and is used for collecting quantitative human body breath;
the alcohol detection module circuit is connected with the human breath acquisition device and is used for detecting alcohol in the exhaled gas of the human body;
the alcohol detection module circuit is provided with a communication module, and the communication module is used for transmitting an alcohol detection result to external equipment.
2. The modular alcohol testing device of claim 1, wherein the housing module is provided with an air blowing channel, and the air blowing channel is used for being connected with an air blowing pipe;
the human body expiration collection system comprises: the air bag is provided with an air bag air inlet, the air inlet of the electrochemical alcohol sensor is communicated with the air outlet of the air blowing channel, the air outlet of the electrochemical alcohol sensor is communicated with the air inlet of the air bag, and a piston of the electromagnet is connected with the air bag and used for drawing and discharging the air bag to enable the air bag to be pulled to suck in and discharge the human body to exhale.
3. The modular alcohol detection device of claim 2 wherein the alcohol detection module circuitry comprises:
the alcohol detection circuit is connected with an electrode of the electrochemical alcohol sensor and is used for detecting the alcohol concentration of the quantitative human body exhaled gas extracted by the air bag;
and the microprocessor is electrically connected with the alcohol detection circuit and is used for receiving the detection processing output of the alcohol detection circuit and outputting the detection result to external equipment through a communication interface.
4. The modular alcohol testing device according to claim 3, further comprising a human breath collecting driving circuit, wherein the human breath collecting driving circuit is respectively connected to the microprocessor and the electromagnet, and the human breath collecting driving circuit is configured to output a human breath collecting driving signal under the control of the microprocessor to drive the electromagnet to collect the exhaled air.
5. The modular alcohol detection device of claim 3, wherein the alcohol detection circuit comprises:
a front-end signal processing circuit which comprises an integrated operational amplifier U1, a resistor R7, a resistor R3, a resistor R8, a resistor R39 and a resistor R5, one end of the resistor R7 is connected with one output end of the electrochemical alcohol sensor, the other end of the resistor R7 is connected with the negative end of the integrated operational amplifier U1, one end of the resistor R3 is connected with the negative end of the integrated operational amplifier U1, the other end of the resistor R3 is connected with the output end of the integrated operational amplifier U1, one end of the resistor R8 is connected with the other end of the electrochemical alcohol sensor, one end of the resistor R8 is connected with the positive end of the integrated operational amplifier U1, one end of the resistor R39 is connected with the positive end of the integrated operational amplifier U1, the resistor R39 is connected with the reference ground, one of the resistor R5 is connected with the output end of the integrated operational amplifier U1, and the resistor R5 is connected with the signal acquisition end of the microprocessor.
6. The modular alcohol detection device of claim 5, wherein the alcohol detection circuit further comprises:
and the signal input end of the analog-to-digital conversion module is connected with the signal output end of the front-end signal processing circuit, the data output end of the analog-to-digital conversion module is connected with the microprocessor, and the analog-to-digital conversion module is used for performing analog-to-digital conversion on the output signal of the front-end signal processing circuit and transmitting the output signal to the microprocessor.
7. The modular alcohol testing device of claim 5, wherein the electrochemical alcohol sensor is a chemical combustion electrochemical alcohol sensor.
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| CN201821598733.XU CN212180680U (en) | 2018-09-28 | 2018-09-28 | Modularized alcohol detection device |
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| CN201821598733.XU CN212180680U (en) | 2018-09-28 | 2018-09-28 | Modularized alcohol detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235909A (en) * | 2021-12-20 | 2022-03-25 | 汉威科技集团股份有限公司 | Exhaled gas alcohol detector with dynamically adjustable measuring range and implementation method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235909A (en) * | 2021-12-20 | 2022-03-25 | 汉威科技集团股份有限公司 | Exhaled gas alcohol detector with dynamically adjustable measuring range and implementation method |
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