JP4627570B1 - Alcohol measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alcohol measuring device capable of causing a measurer in the middle of exhalation to recognize the strength of exhalation.
An alcohol measuring device includes a mouthpiece into which an exhalation of a measurer is blown, an alcohol sensor for measuring an alcohol concentration in the breath blown into the mouthpiece, and a pressure of the breath blown into the mouthpiece. The expiratory pressure sensor 38 for measuring and the speaker 25 for outputting the pressure measured by the expiratory pressure sensor 38 by a change in sound are provided. The speaker 25 enables the alcohol sensor 35 to measure the alcohol concentration. The change in the pressure within the effective range, which is the range of the above, is output by the change of the sound, and the speaker 25 indicates the change in the volume with respect to the exhalation intensity within the effective range and the volume at the predetermined exhalation intensity within the effective range. It is characterized by a change represented by one of a peak shape and a valley shape .
[Selection] Figure 2

Description

  The present invention relates to an alcohol measuring device capable of measuring an alcohol concentration in a breath of a measurer.

  As a conventional alcohol measuring device, a case that is held by the measurer by hand at the time of measurement, a mouthpiece that is provided in the case and in which the exhalation of the measurer is blown, and an alcohol concentration in the breath that is blown into the mouthpiece The alcohol sensor to measure, the wind sensor to measure the wind force that is the strength of the breath blown into the mouthpiece, and the measurement of the alcohol concentration in the breath of the measurer that is provided on the housing has been successfully completed When a significant increase in wind power measured by the wind sensor is observed, the alcohol concentration is measured by the alcohol sensor at the timing when a significant increase in wind power measured by the wind sensor is recognized. The OK lamp is turned on to detect abnormal situations such as no significant increase in wind power measured by the wind sensor. If the alcohol tester for instructing re-measured for measurer by blinking the OK lamp is known (e.g., see Patent Document 1.).

JP 2008-232710 A

  However, since the alcohol tester described in Patent Document 1 has an OK lamp disposed at a position where it cannot be seen by a measurer who is breathing into the mouthpiece, the alcohol concentration measured by the alcohol sensor. It is impossible to make a measurement person in the middle of breathing into the mouthpiece recognize whether or not the breath strength is within the range of the effective breathing measurement.

  Therefore, it is difficult for the measurer to maintain the strength of exhalation within a range in which the measurement of the alcohol concentration by the alcohol sensor is effective. As a result, the measurer may not be able to succeed at one time and may have to try again and again. For example, in the case of an alcohol measuring device that is not familiar to the measurer, such as an alcohol measuring device for police drunk driving control, the measurer must be within the range that enables the alcohol sensor to measure the alcohol concentration. This is even more difficult to maintain.

  Then, an object of this invention is to provide the alcohol measuring device which can make the measurement person in the middle of exhaling breath recognize the strength of the exhalation.

  The alcohol measuring device according to the present invention includes an exhalation inhalation unit into which an exhalation of a measurer is infused, an alcohol sensor for measuring an alcohol concentration in the exhalation inhaled into the exhalation insufflation unit, and the inhalation into the exhalation inhalation unit A breath strength sensor that measures the strength of breath; and a breath strength output unit that outputs the strength measured by the breath strength sensor according to a change in sound. The change in the intensity within the effective range, which is the range of the intensity that enables the measurement of the alcohol concentration by the alcohol sensor, is output by a change in sound.

  With this configuration, the alcohol measuring device according to the present invention outputs a change in the strength of the breath within the effective range by a change in sound, so that the measurer in the middle of breathing recognizes the strength of the breath. Can do.

  Further, the expiration intensity output unit of the alcohol measuring device of the present invention has a peak shape with a change in volume relative to the intensity within the effective range as a peak at a volume at the predetermined intensity within the effective range, and It may be a change represented by one of the valley types.

  With this configuration, the alcohol measuring device according to the present invention can make the measurer easily recognize a predetermined exhalation strength within the effective range based on the sound volume. By adjusting the intensity, the measurer can easily maintain the exhalation intensity within the effective range.

  Further, the expiration intensity output unit of the alcohol measuring device of the present invention has a minimum change in sound frequency with respect to the intensity within the effective range at one end of the effective range and a maximum at the other. The change may gradually increase from one to the other.

  With this configuration, the alcohol measuring device according to the present invention allows the measurer to easily recognize whether the current exhalation intensity is larger or smaller than the predetermined exhalation intensity within the effective range by combining the volume and the sound frequency. Therefore, the measurer can easily adjust the expiratory strength so that the volume reaches the top of the change.

  Moreover, the exhalation strength output unit of the alcohol measuring device of the present invention may mute the sound outside the effective range.

  With this configuration, the alcohol measuring device of the present invention can make the measurer easily recognize whether or not the strength of expiration is within the effective range.

  Further, the expiration intensity output unit of the alcohol measuring device of the present invention silences the sound outside the effective range whose strength is weaker than the effective range, and sounds outside the effective range whose strength is stronger than the effective range. May be output.

  With this configuration, the alcohol measuring device of the present invention outputs without extinguishing the sound when the exhalation strength is outside the effective range stronger than the effective range. It is possible to prevent the device itself from being misunderstood as having failed.

  The alcohol measuring device of the present invention can make the measurer in the middle of breathing recognize the strength of the breath.

It is an external appearance perspective view of the alcohol measuring device which concerns on one embodiment of this invention. It is a block diagram of the alcohol measuring device shown in FIG. It is a figure which shows the relationship between the expiration pressure measured by the expiration pressure sensor shown in FIG. 2, and the amplitude of the output signal of AM modulator into which the basic signal was input. It is a figure which shows the relationship between the expiration pressure measured by the expiration pressure sensor shown in FIG. 2, and the frequency of the output signal of the FM modulator into which the basic signal was input. It is a flowchart of operation | movement of the alcohol measuring device shown in FIG. It is a figure which shows the example of the pressure of the expiration | expired_air which was blown into the mouthpiece shown in FIG. It is a figure which shows the output signal of AM modulator 40, FM modulator 41, and the combiner | synthesizer 42 according to the example shown in FIG. FIG. 4 is a diagram showing an example different from the example shown in FIG. 3 of the relationship between the expiratory pressure measured by the expiratory pressure sensor shown in FIG. 2 and the amplitude of the output signal of the AM modulator to which the basic signal is input. FIG. 8 is a diagram illustrating an example different from the example illustrated in FIG. 7 of the output signals of the AM modulator 40, the FM modulator 41, and the combiner according to the example illustrated in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  First, the configuration of the alcohol measuring device according to the present embodiment will be described.

  FIG. 1 is an external perspective view of an alcohol measuring device 10 according to the present embodiment.

  As shown in FIG. 1, the alcohol measuring device 10 includes a housing 21 held by a measurer 90 with a hand 91 at the time of measurement, and the present invention. The mouthpiece 22 as an exhalation breathing part, a switch 23 for starting the measurement of the alcohol concentration in the exhaled breath blown into the mouthpiece 22, and the alcohol that displays the alcohol concentration in the exhaled breath blown into the mouthpiece 22 A concentration display unit 24 and a speaker 25 as an exhalation strength output unit of the present invention that outputs an exhalation pressure as an exhalation pressure as a strength of exhalation blown into the mouthpiece 22 by a change in sound are provided.

  The housing 21 has a surface 21a on which an unillustrated breath injection port is formed, into which the mouthpiece 22 is inserted, and a surface 21b on which the switch 23, the alcohol concentration display unit 24 and the speaker 25 are provided adjacent to the surface 21a. Is a substantially rectangular parallelepiped.

  The mouthpiece 22 is provided so that it can be inserted into and removed from the exhalation inlet of the housing 21 and can be exchanged for each measurer 90.

  The switch 23 is provided substantially at the center on the surface 21 b of the housing 21.

  The alcohol concentration display unit 24 is a display device such as an LCD (Liquid Crystal Display). The alcohol concentration display unit 24 is provided on the mouthpiece 22 side with respect to the switch 23 on the surface 21 b of the housing 21.

  The speaker 25 is provided on the surface 21 b of the housing 21 on the side opposite to the mouthpiece 22 side with respect to the switch 23.

  FIG. 2 is a block diagram of the alcohol measuring device 10.

  As shown in FIG. 2, the alcohol measuring device 10 includes a CPU (Central Processing Unit) 31 for controlling the alcohol measuring device 10 as a whole, and a ROM that stores programs and various data for operating the CPU 31 in advance. (Read Only Memory) 32, a RAM (Random Access Memory) 33 used as a work area of the CPU 31, a non-volatile memory 34 such as an EEPROM (Electrically Erasable Programmable Read Only Memory), for example, for storing measurement results, and the like. 22, an alcohol sensor 35 that measures the alcohol concentration in the exhaled breath, and an amplifier 36 that amplifies the signal output from the alcohol sensor 35. A suction pump 37 that sucks the exhaled air blown into the mouthpiece 22 to cause the alcohol sensor 35 to measure the alcohol concentration, and an exhalation strength of the present invention that measures the exhaled air pressure as the intensity of the exhaled air blown into the mouthpiece 22 An expiratory pressure sensor 38 serving as a depth sensor, a timepiece 39 for measuring time, an AM modulator 40 that modulates an AM (Amplitude Modulation) basic signal having a constant amplitude and frequency, and an FM (Frequency Modulation) modulation of the basic signal The FM modulator 41, the synthesizer 42 that synthesizes the output signal of the AM modulator 40 and the output signal of the FM modulator 41, the amplifier 43 that amplifies the output signal of the synthesizer 42, the switch 23 described above, and the alcohol concentration A display unit 24 and a speaker 25 are provided.

  When the output signal of the AM modulator 40 and the output signal of the FM modulator 41 are input to the synthesizer 42, the amplitude is the same as the amplitude of the output signal of the AM modulator 40 and the frequency is the output of the FM modulator 41. A signal having the same frequency as the signal is output.

  CPU 31, ROM 32, RAM 33, nonvolatile memory 34, alcohol sensor 35, amplifier 36, suction pump 37, expiratory pressure sensor 38, clock 39, AM modulator 40, FM modulator 41, synthesizer 42, and amplifier 43 are provided in the case 21. Is provided inside.

  FIG. 3 is a diagram illustrating the relationship between the expiratory pressure measured by the expiratory pressure sensor 38 and the amplitude of the output signal of the AM modulator 40 to which the basic signal is input.

  As shown in FIG. 3, the AM modulator 40 changes the amplitude of the output signal with respect to the expiratory pressure within the effective range, with the median value of the minimum expiratory pressure and the maximum expiratory pressure within the effective range as a vertex (maximum value). The change is represented by a mountain shape. Here, the effective range is a range of expiratory pressure that enables measurement of alcohol concentration by the alcohol sensor 35. Both ends of the effective range are a minimum expiratory pressure that is the minimum value of the expiratory pressure that enables the alcohol concentration measurement by the alcohol sensor 35 and a maximum expiratory pressure that is the effective value of the alcohol concentration that is measured by the alcohol sensor 35. The expiratory pressure. The reason why the minimum expiratory pressure and the maximum expiratory pressure are set is that the alcohol concentration cannot be accurately measured by the alcohol sensor 35 unless exhalation at a certain pressure is performed. The minimum expiratory pressure and the maximum expiratory pressure may be, for example, the minimum expiratory pressure and the maximum expiratory pressure specified by the US Department of Transportation for alcohol measuring devices.

  The amplitude of the output signal of the AM modulator 40 is zero when the expiratory pressure measured by the expiratory pressure sensor 38 is smaller than the minimum expiratory pressure or larger than the maximum expiratory pressure. The amplitude of the output signal of the AM modulator 40 is A1 greater than zero when the expiratory pressure measured by the expiratory pressure sensor 38 is the minimum expiratory pressure or the maximum expiratory pressure, and from A1 when the expiratory pressure is the median value. Large A2. Further, the amplitude of the output signal of the AM modulator 40 increases as the expiratory pressure increases when the expiratory pressure measured by the expiratory pressure sensor 38 is within the range from the minimum expiratory pressure to the median value. On the other hand, the amplitude of the output signal of the AM modulator 40 decreases as the expiratory pressure increases when the expiratory pressure measured by the expiratory pressure sensor 38 is within the range from the median value to the maximum expiratory pressure. It should be noted that A1 and A2 only have to be values within which the volume of the sound finally output from the speaker 25 falls within the human audible region.

  FIG. 4 is a diagram showing the relationship between the expiratory pressure measured by the expiratory pressure sensor 38 and the frequency of the output signal of the FM modulator 41 to which the basic signal is input.

  As shown in FIG. 4, the FM modulator 41 minimizes the change in the frequency of the output signal relative to the expiratory pressure within the effective range at the minimum expiratory pressure that is one of the ends of the effective range, and the maximum call that is the other. The maximum is the atmospheric pressure, and the change is gradually increased from the minimum expiratory pressure to the maximum expiratory pressure.

  The frequency of the output signal of the FM modulator 41 is zero when the expiratory pressure measured by the expiratory pressure sensor 38 is smaller than the minimum expiratory pressure. The frequency of the output signal of the FM modulator 41 is 100 Hz when the expiratory pressure measured by the expiratory pressure sensor 38 is the minimum expiratory pressure, and 3 kHz when the expiratory pressure is the median value, which is the maximum expiratory pressure. Sometimes it is 10 kHz. Further, the frequency of the output signal of the FM modulator 41 increases as the expiratory pressure increases when the expiratory pressure measured by the expiratory pressure sensor 38 is within the range from the minimum expiratory pressure to the maximum expiratory pressure. The frequency of the output signal of the FM modulator 41 is 10 kHz when the expiratory pressure measured by the expiratory pressure sensor 38 is greater than the maximum expiratory pressure. Note that these frequencies are merely specific examples and are not limited to these.

  FIG. 5 is a flowchart of the operation of the alcohol measuring device 10.

  When the measurer 90 desires to measure the alcohol concentration in exhaled breath, he presses the switch 23 of the alcohol measuring device 10 and blows the breath into the mouthpiece 22. When the switch 23 is pressed by the measurer 90, the CPU 31 of the alcohol measuring device 10 executes the process shown in FIG.

  As shown in FIG. 5, the CPU 31 starts outputting basic signals to the AM modulator 40 and the FM modulator 41 (S51).

  Next, the CPU 31 resets the accumulated exhalation value stored in the RAM 33 to zero (S52). Here, the cumulative exhalation volume is whether or not the exhalation volume blown by the measurer 90 has reached an expiration volume that enables the alcohol sensor 35 to measure the alcohol concentration (hereinafter referred to as “effective expiration volume”). This is a value for the CPU 31 to determine whether or not. The accumulated exhalation value can be obtained by integrating the flow rate of exhaled air blown by the measurer 90 over time. Since the expiratory flow rate is proportional to the expiratory pressure in the alcohol measuring device 10, it can be obtained from the expiratory pressure.

  Next, the CPU 31 measures the pressure of the exhaled breath blown by the measurer 90 by the expiratory pressure sensor 38 (S53). Here, the CPU 31 controls the processing shown in FIG. 5 to execute S53 at regular intervals based on the time measured by the clock 39. This fixed time is hereinafter referred to as expiratory pressure measurement unit time.

  Next, the CPU 31 determines whether or not the expiratory pressure measured in S53 is within the effective range (S54). The expiratory pressure is within the effective range when it is above the minimum expiratory pressure and below the maximum expiratory pressure. On the other hand, when the expiratory pressure is smaller than the minimum expiratory pressure or larger than the maximum expiratory pressure, it is out of the effective range.

  If the CPU 31 determines in S54 that the expiratory pressure is outside the effective range, the CPU 31 returns to the process of S52 again.

  On the other hand, if the CPU 31 determines in step S54 that the expiratory pressure is within the effective range, the product of the expiratory flow rate corresponding to the expiratory pressure measured in step S53 and the expiratory pressure measurement unit time is stored in the RAM 33. By adding to the accumulated volume value, the expired volume accumulated value stored in the RAM 33 is updated (S55).

  Next, the CPU 31 determines whether or not the accumulated expiratory volume value stored in the RAM 33 has reached the effective expiratory volume (S56). Here, the reason why the effective expiratory volume is set in S56 is that if the alcohol concentration is measured when the volume of air blown into the mouthpiece 22 by the measurer 90 is small, it has just entered the mouth of the measurer 90. This is because a certain volume of air needs to be blown in order to measure the alcohol concentration of exhaled breath, that is, the air that has entered the lungs. As the effective expiration volume, for example, an amount such as 1 L is set.

  If the CPU 31 determines in S56 that the expiratory volume cumulative value has not reached the effective expiratory volume, it executes the process of S53 again.

  On the other hand, if the CPU 31 determines in S56 that the accumulated expiratory volume has reached the effective expiratory volume, the CPU 31 ends the output of the basic signal to the AM modulator 40 and the FM modulator 41 (S57), and drives the suction pump 37. The alcohol sensor 35 is caused to measure the alcohol concentration (S58).

  Next, the CPU 31 displays the alcohol concentration measured in S58 on the alcohol concentration display unit 24 (S59), and ends the processing shown in FIG. Note that the CPU 31 erases the alcohol concentration displayed in S59 as a predetermined time elapses.

  FIG. 6 is a diagram illustrating an example of the pressure of exhaled air blown into the mouthpiece 22 by the measurer 90. FIG. 7 is a diagram illustrating output signals of the AM modulator 40, the FM modulator 41, and the combiner 42 according to the example illustrated in FIG.

  When the measurer 90 presses the switch 23, the CPU 31 executes the process shown in FIG. 5 as described above. Therefore, when the measurer 90 blows into the mouthpiece 22 as shown in FIG. 6, the AM modulator 40, FM The output signals of the modulator 41 and the combiner 42 are as shown in FIG. Here, the sound output by the speaker 25 is the same as the output signal of the synthesizer 42. Therefore, the speaker 25 does not emit sound from time 0 to time t1, gradually increases the volume and sound frequency from time t1 to time t2, and gradually decreases the sound frequency while gradually decreasing volume from time t2 to time t3. The sound frequency is gradually decreased from time t4 to time t5, the sound frequency is gradually decreased from time t4 to time t5, and the sound volume and sound frequency are gradually decreased from time t5 to time t6. No sound is produced from time t6 to time t7, and the volume and sound frequency are gradually increased from time t7.

  As described above, the alcohol measuring device 10 outputs a change in the expiratory pressure within the effective range by a change in sound, so that the measurer 90 in the middle of breathing can recognize the expiratory pressure. .

  Further, the alcohol measuring device 10 changes the change in volume relative to the expiratory pressure within the effective range into a change represented by a mountain shape with the volume at the median value within the effective range as the maximum value. The value can be easily recognized by the measurer 90 based on the volume. Therefore, the alcohol measuring device 10 can easily maintain the expiratory pressure within the effective range by allowing the measurer 90 to adjust the expiratory pressure so that the volume becomes the maximum value.

  Further, the alcohol measuring device 10 has a minimum change in the sound frequency with respect to the expiratory pressure within the effective range, the smallest at the minimum expiratory pressure, the maximum at the maximum expiratory pressure, and gradually from the minimum expiratory pressure to the maximum expiratory pressure. Since the change is increased, the measurer 90 can easily recognize whether the current expiratory pressure is larger or smaller than the median value in the effective range by a combination of the volume and the sound frequency. Therefore, the alcohol measuring device 10 can cause the measurer 90 to easily adjust the expiratory pressure so that the sound volume becomes the maximum value.

  Moreover, since the alcohol measuring device 10 is muted outside the effective range, the measurer 90 can easily recognize whether or not the expiratory pressure is within the effective range.

  Note that the alcohol measuring device 10 may be configured so as to mute the sound outside the effective range where the expiratory pressure is weaker than the effective range and output the sound outside the effective range where the expiratory pressure is stronger than the effective range. For example, when the relationship between the expiratory pressure measured by the expiratory pressure sensor 38 and the amplitude of the output signal of the AM modulator 40 to which the basic signal is input is the relationship shown in FIG. As shown in FIG. 4, the expiratory pressure is lower than the effective range, that is, outside the effective range, that is, from the time 0 to the time t1 and from the time t6 to the time t7. The sound is output from time t3 to time t4. When the alcohol measuring device 10 outputs without extinguishing the sound when the expiratory pressure is outside the effective range that is stronger than the effective range, the alcohol measuring device 10 itself breaks down to the measurer 90 in the middle of breathing. It is possible to prevent being misunderstood as being.

  When the alcohol measuring device 10 is configured to output sound outside the effective range where the expiratory pressure is higher than the effective range, the frequency of the sound output outside the effective range where the expiratory pressure is higher than the effective range is, for example, 15 kHz. In addition, the FM modulator 41 may be set to be different from the frequency of the sound within the effective range. Thereby, the measurer 90 can easily recognize that the expiratory pressure is outside the effective range where the expiratory pressure is stronger than the effective range.

  The alcohol measuring device 10 may output sound even outside the effective range where the expiratory pressure is weaker than the effective range.

  The alcohol measuring device 10 changes the change in volume relative to the expiratory pressure within the effective range into a change represented by a mountain shape with the volume at the median value within the effective range as the apex (maximum value). It may be a change represented by a valley shape with the volume at the median value as the apex (minimum value).

  In the alcohol measuring device 10, the median value is set as the expiratory pressure corresponding to the apex of the change in volume with respect to the expiratory pressure within the effective range. However, the expiratory pressure is not limited to the median value and any expiratory pressure is set. Is possible.

  Further, the alcohol measuring device 10 has a minimum change in the sound frequency with respect to the expiratory pressure within the effective range, the smallest at the minimum expiratory pressure, the maximum at the maximum expiratory pressure, and gradually from the minimum expiratory pressure to the maximum expiratory pressure. Although the change is increased, the change may be the minimum at the maximum expiratory pressure, the maximum at the minimum expiratory pressure, and gradually increasing from the maximum expiratory pressure toward the minimum expiratory pressure.

  In addition, the alcohol measuring device 10 can cause the measurer 90 to easily adjust the expiratory pressure so that the volume reaches the maximum value by combining the volume and the frequency of the sound. It is also possible for the measurer 90 to adjust the expiratory pressure so that becomes the maximum value.

  Further, the alcohol measuring device 10 changes the change in volume relative to the expiratory pressure within the effective range into a change represented by a mountain shape with the volume at the median value within the effective range as the apex (maximum value). The change in the frequency of the sound relative to the expiratory pressure may be a change represented by one of a peak shape and a valley shape with the frequency at the median value in the effective range as the apex. In this case, the alcohol measuring device 10 minimizes the change in volume with respect to the expiratory pressure within the effective range at the minimum expiratory pressure, maximizes at the maximum expiratory pressure, and gradually increases from the minimum expiratory pressure toward the maximum expiratory pressure. It may be a change, or a minimum at the maximum expiratory pressure, a maximum at the minimum expiratory pressure, and a change that gradually increases from the maximum expiratory pressure toward the minimum expiratory pressure.

  Further, the alcohol measuring device 10 can adopt any method as long as it can express the change in the expiratory pressure within the effective range by a method other than the sound changing method described above. For example, the alcohol measuring device 10 may output a change in expiratory pressure within the effective range by a change in timbre.

  In the present embodiment, the expiratory pressure is used as the expiratory strength, but the expiratory flow rate may be used as the expiratory strength. Moreover, a flow rate sensor may be used as the breath strength sensor of the present invention.

  Moreover, in this Embodiment, although the mouthpiece 22 provided with respect to the housing | casing 21 is provided as an expiration | expired_air blowing part of this invention, it is provided in the housing | casing 21 so that insertion / extraction is impossible. There may be provided an exhalation blowing unit that is given by the measurer 90 and the exhalation is blown in, or an exhalation blowing unit that is blown by the exhalation without being given by the measurer 90.

  Moreover, in this Embodiment, although the alcohol measuring device 10 is held by the measurer 90 with the hand 91 at the time of measurement, other forms, such as a stationary type, may be sufficient.

10 Alcohol measuring device 22 Mouthpiece (exhalation blowing part)
25 Speaker (exhalation strength output part)
35 Alcohol sensor 38 Expiratory pressure sensor (expiratory strength sensor)
90 measurer

Claims (4)

An exhalation inhalation unit into which the exhalation of the measurer is infused; an alcohol sensor for measuring the alcohol concentration in the exhalation into the exhalation inhalation unit; A strength sensor, and an expiratory strength output unit that outputs the strength measured by the expiratory strength sensor by a change in sound,
The exhalation strength output unit outputs the change in strength within the effective range, which is the range of the strength that enables measurement of the alcohol concentration by the alcohol sensor, by a change in sound ,
The expiratory strength output unit represents a change in volume with respect to the strength within the effective range, a change represented by one of a peak shape and a valley shape with the volume at the predetermined strength within the effective range as a vertex. An alcohol measuring device characterized by that.   The expiratory strength output unit has a minimum change in sound frequency with respect to the strength within the effective range at one end of the effective range, the maximum at the other, and gradually from one to the other. The alcohol measuring device according to claim 1, wherein the change is an increasing change.   The alcohol measuring device according to claim 1 or 2, wherein the exhalation strength output unit silences sound outside the effective range.   The expiratory strength output unit is configured to mute a sound outside the effective range whose strength is weaker than the effective range and output a sound outside the effective range whose strength is stronger than the effective range. The alcohol measuring device according to claim 1 or 2.

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