阅读说明：本技术 酒精检测仪计量检定方法 (Alcohol detector metering verification method ) 是由 施江焕 余善成 孙超平 秦树伟 潘卫江 于 2021-07-07 设计创作，主要内容包括：本发明提供一种酒精检测仪计量检定方法,将待检定的酒精检测仪及酒精检测仪检定装置均与电脑进行通信连接,从而实现数据通信,所述电脑上的管理系统软件因此能够获取酒精检测仪检定装置的吹气口输出的标准酒精气体的浓度值以及待检定的酒精检测仪显示出的读数值。通过将测量数据上传到电脑,可以得出更为精确的标准酒精气体浓度值,从而最终得到更加精确的示值误差。还可避免检定人员人工记录过程繁琐,且容易出错的问题；另一方面,有利于实现检定过程的自动化,且防止人为修改检定结果。(The invention provides a method for metrological verification of an alcohol detector, which is characterized in that an alcohol detector to be verified and an alcohol detector verification device are in communication connection with a computer, so that data communication is realized, and management system software on the computer can obtain a concentration value of standard alcohol gas output by a gas blowing port of the alcohol detector verification device and a reading value displayed by the alcohol detector to be verified. By uploading the measured data to a computer, a more accurate standard alcohol gas concentration value can be obtained, and a more accurate indication error is finally obtained. The problems that the manual recording process of a verification worker is complicated and errors are easy to occur can be solved; on the other hand, the method is beneficial to realizing the automation of the verification process and preventing the verification result from being manually modified.)

1. The alcohol detector metrological verification method is characterized by comprising the following steps of:

step S1, providing an alcohol detector to be calibrated, an alcohol detector calibrating device and a computer, wherein the alcohol detector to be calibrated and the alcohol detector calibrating device are in communication connection with the computer;

the alcohol detector calibrating device comprises an air blowing port and can output standard alcohol gas;

the computer is provided with a management system software which is used for acquiring the concentration value of the standard alcohol gas before blowing, acquiring the reading value displayed on the alcohol detector to be verified after blowing is finished and recording the reading value on the management system software;

step S2, setting the concentration and blowing parameters of standard alcohol gas on the alcohol detector calibrating device;

s3, placing the alcohol detector to be detected at the air blowing port of the alcohol detector detecting device, and acquiring the concentration value of the standard alcohol gas output by the air blowing port before air blowing by the management system software;

step S4, starting the alcohol detector calibrating device to blow air, and displaying the reading of the alcohol detector to be calibrated after the air blowing is finished;

s5, the management system software acquires the reading value displayed by the alcohol detector to be verified;

step S6, the management system software automatically analyzes the absolute error and the relative error of the indication value;

and S7, repeating the steps S2-S6 to measure for a plurality of times, and automatically analyzing by the management system software according to the measurement result to obtain a verification result and automatically generating a verification report of the indicating value error.

2. The alcohol meter certification method according to claim 1, wherein the alcohol meter to be certified is connected to the computer in a wired or wireless manner, and the alcohol meter certification device is connected to the computer in a wired or wireless manner.

3. The alcohol detector metrological verification method of claim 2, characterized in that the wired means comprises a serial data interface, a USB interface, or a network interface, and the wireless means comprises bluetooth, WIFI, infrared, 4G, or 5G.

4. The alcohol detector metrological verification method of claim 1, wherein the standard alcohol gas output from the gas blowing port is derived from a steel cylinder of standard alcohol gas or standard alcohol gas generated by an alcohol generating source device.

5. The alcohol detector metrological verification method of claim 1, wherein in step S2, the air blowing parameters include air blowing time and air blowing flow rate.

6. The alcohol detector metrological verification method of claim 5, wherein the concentration of the standard alcohol gas is 0.1mg/L, 0.4mg/L or 0.6 mg/L; the air blowing time is 6 seconds, and the air blowing flow is 15L/min.

7. The alcohol detector metrological verification method of claim 1, further comprising a step of zeroing the alcohol detector to be tested after step S5.

8. The alcohol detector metrological verification method of claim 1, wherein in step S6, the management system software automatically calculates an indication absolute error and an indication relative error according to equations (a) and (b);

ΔC＝C-C₀ (a)

in the formula: delta C is an absolute error of an indication value, mg/L;

ΔC_ris an indication of relative error;

c is a reading value displayed by the alcohol detector to be detected, mg/L;

C₀the concentration value of the standard alcohol gas output by the air blowing port is mg/L.

9. The alcohol detector metrological verification method of claim 1, wherein in the step S7, the number of times of repeating the steps S2 to S6 is 10.

10. The alcohol detector metrological verification method of claim 1, wherein in step S7, the management system software automatically calculates an average value of the absolute errors of the indication values and an average value of the relative errors of the indication values according to the absolute errors of the indication values and the relative errors of the indication values measured several times, thereby automatically generating a verification report of the indication errors.

11. The alcohol meter certification method according to claim 1, wherein the management system software is capable of controlling the alcohol meter certification device to perform certification on the alcohol meter to be certified according to a preset standard alcohol gas concentration and measurement time sequence according to preset commands.

Technical Field

The invention relates to the technical field of exhaled gas alcohol content detector verification, in particular to a metrological verification method for an alcohol detector.

Background

An alcohol content detector of expired gas, called an alcohol detector for short, is a tool for traffic police law enforcement, belongs to a measuring instrument, and can be used for law enforcement only if the alcohol detector is verified by a measuring department and obtains a verification certificate.

When the metering department performs metering detection on the alcohol detector, the metering detection procedure of the alcohol detector is required (JJG 657-. According to the requirements of the regulation, the standard alcohol gas is needed in the verification process, and is generally derived from the first-grade standard gas contained in a steel bottle or the standard alcohol gas generated by an ethanol generating source device, wherein the indication error (including the indication absolute error and the indication relative error) is measured as follows:

1. setting the standard alcohol gas concentration C on the calibrating device₀For example, 0.600 mg/L;

2. setting blowing parameters such as blowing time, blowing flow and the like on the calibrating device, wherein the blowing flow is 15L/min and the blowing time is 6 seconds;

3. connecting the alcohol detector to an air blowing port of the calibrating device, and starting an air blowing process;

4. if the air blowing is successful, the alcohol detector displays a reading C, such as 0.605mg/L, and the reading is recorded;

5. repeating the above 1-4 processes for measuring again after the alcohol detector returns to zero for 10 times, and averaging

6. Calculating the absolute error Delta C and the relative error Delta C of the indication value of each concentration point according to the formula (1) or the formula (2)_r。

In the formula: delta C is an absolute error of an indication value, mg/L;

ΔC_ris an indication of relative error;

the arithmetic mean value of 10 measurement indications of the alcohol detector is mg/L;

C₀the concentration value of the ethanol standard gas introduced into the alcohol detector is mg/L.

In the process, the calibrating personnel needs to frequently record the reading on the alcohol detector, if the reading is missed, the historical record on the alcohol detector needs to be browsed for additional recording, the recording process is possible to be wrongly recorded, and theoretically, the calibrating personnel also needs to record the standard alcohol gas concentration C on the calibrating device every time the calibrating personnel blows₀Because the concentration C is the same as the first standard gas if the cylinder is filled with the first standard gas₀Will vary with the outlet temperature and atmospheric pressure; or concentration C if the source of the generation is a device₀Will vary with the outlet temperature, atmospheric pressure and process of production. That is, the standard alcohol gas concentration C on the assay device₀Minor variations are possible. Thus, if the calibrating personnel only record the standard alcohol gas concentration C at the very beginning of the calibrating device₀Without being updated at any time, the indication error ac for each measurement may not be accurate. Thus, the examiner needs to record 10 alcohol test readings and 10 standard alcohol gas concentrations. Other verification protocols also stipulateIn the measurement items, for example, in the subsequent detection, in addition to the indication error measurement, the repeatability and the memory residual effect need to be measured, so that the indication error needs to be measured 10 times at three concentrations of 0.1mg/L, 0.4mg/L and 0.6mg/L, the repeatability needs to be measured 10 times at 0.4mg/L, and the memory residual effect needs to be measured 10 times at 0.1mg/L, 1 time at 0.4mg/L and 1 time at 0.1 mg/L. Therefore, if the alcohol is measured according to the above test items according to the office work, a complete metrological verification measurement process requires 52 exhaled breath measurements on the detected alcohol detector on the verification device in total, and during or after the measurement, the verification personnel must copy the measurement results on the alcohol detector onto paper or computer software, and obtain a verification report after statistical analysis according to the concentration of the standard alcohol gas and the measurement results of the alcohol detector set on the verification device, so as to obtain a verification result of passing or failing, therefore, the conventional verification method is complicated in process and prone to errors. In addition, manual transcription is not only easy to make mistakes, but also provides convenience for arbitrarily modifying detection results, at present, electronic management of metrological verification is greatly promoted, and the electronic alcohol detection measurement also requires automation of the detection process to prevent the occurrence of arbitrarily modifying behaviors, so that improvement is needed.

Disclosure of Invention

The invention aims to provide a metrological verification method for an alcohol detector, which obtains more accurate indication error by uploading measurement data to a computer; the problems that the manual recording process of a calibrating personnel is complicated and mistakes are easy to occur can be avoided, the automation of the calibrating process is facilitated, and the calibration result is prevented from being manually modified.

In order to achieve the aim, the invention provides a metrological verification method for an alcohol detector, which comprises the following steps:

step S1, providing an alcohol detector to be calibrated, an alcohol detector calibrating device and a computer, wherein the alcohol detector to be calibrated and the alcohol detector calibrating device are in communication connection with the computer;

the alcohol detector calibrating device comprises an air blowing port and can output standard alcohol gas;

the computer is provided with a management system software which is used for acquiring the concentration value of the standard alcohol gas before blowing, acquiring the reading value displayed on the alcohol detector to be verified after blowing is finished and recording the reading value on the management system software;

step S2, setting the concentration and blowing parameters of standard alcohol gas on the alcohol detector calibrating device;

s3, placing the alcohol detector to be detected at the air blowing port of the alcohol detector detecting device, and acquiring the concentration value of the standard alcohol gas output by the air blowing port before air blowing by the management system software;

step S4, starting the alcohol detector calibrating device to blow air, and displaying the reading of the alcohol detector to be calibrated after the air blowing is finished;

s5, the management system software acquires the reading value displayed by the alcohol detector to be verified;

step S6, the management system software automatically analyzes the absolute error and the relative error of the indication value;

and S7, repeating the steps S2-S6 to measure for a plurality of times, and automatically analyzing by the management system software according to the measurement result to obtain a verification result and automatically generating a verification report of the indicating value error.

The alcohol detector to be detected is in communication connection with a computer in a wired mode or a wireless mode, and the alcohol detector detecting device is in communication connection with the computer in a wired mode or a wireless mode.

The wired mode comprises a serial data interface, a USB interface or a network interface, and the wireless mode comprises Bluetooth, WIFI, infrared, 4G or 5G.

The standard alcohol gas output by the air blowing port is derived from the standard alcohol gas in a steel cylinder or the standard alcohol gas generated by an ethanol generating source device.

In step S2, the blowing parameters include a blowing time and a blowing flow rate.

The concentration of the standard alcohol gas is 0.1mg/L, 0.4mg/L or 0.6 mg/L; the air blowing time is 6 seconds, and the air blowing flow is 15L/min.

A step of zeroing the alcohol tester to be tested is also included after step S5.

In step S6, the management system software automatically calculates an indication absolute error and an indication relative error according to equations (a) and (b);

ΔC＝C-C₀ (a)

in the formula: delta C is an absolute error of an indication value, mg/L;

ΔC_ris an indication of relative error;

c is a reading value displayed by the alcohol detector to be detected, mg/L;

C₀the concentration value of the standard alcohol gas output by the air blowing port is mg/L.

In the step S7, the number of times of repeating the steps S2 to S6 is 10.

In step S7, the management system software automatically calculates an average value of the indication absolute errors and an average value of the indication relative errors according to the indication absolute errors and the indication relative errors measured several times, thereby automatically generating a verification report of the indication errors.

The management system software can control the alcohol detector calibrating device to calibrate the alcohol detector to be calibrated according to the preset standard alcohol gas concentration and measurement frequency sequence according to the preset command.

The invention has the beneficial effects that: the invention provides a metrological verification method for an alcohol detector, which is characterized in that an alcohol detector to be verified and an alcohol detector verification device are in communication connection with a computer, so that data communication is realized, and management system software on the computer can obtain a concentration value of standard alcohol gas output by a gas blowing port of the alcohol detector verification device and a reading value displayed by the alcohol detector to be verified. By uploading the measured data to a computer, a more accurate standard alcohol gas concentration value can be obtained, and a more accurate indication error is finally obtained. The problems that the manual recording process of a verification worker is complicated and errors are easy to occur can be solved; on the other hand, the method is beneficial to realizing the automation of the verification process and preventing the verification result from being manually modified.

Drawings

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.

In the drawings, there is shown in the drawings,

FIG. 1 is a flow chart of the alcohol detector metrological verification method of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to fig. 1, the present invention provides a metrological verification method for an alcohol detector, including the following steps:

step S1, providing an alcohol detector to be detected, an alcohol detector detecting device and a computer; the alcohol detector to be detected and the alcohol detector detecting device are in communication connection with a computer;

the alcohol detector calibrating device comprises an air blowing port and can output standard alcohol gas.

And the computer is provided with a management system software which is used for acquiring the concentration value of the standard alcohol gas before blowing, acquiring the reading value displayed on the alcohol detector to be verified after blowing is finished and recording the reading value on the management system software.

Specifically, the alcohol detector to be detected is in communication connection with a computer in a wired or wireless manner, and the alcohol detector detecting device is in communication connection with the computer in a wired or wireless manner.

The wired mode includes but is not limited to a serial data interface, a USB interface, or a network interface, etc.

The wireless mode includes but is not limited to bluetooth, WIFI, infrared, 4G, or 5G.

The standard alcohol gas output by the air blowing port is derived from the standard alcohol gas in a steel cylinder or the standard alcohol gas generated by an ethanol generating source device. Although this is not a limitation of the present invention, one skilled in the art can select a suitable standard alcohol gas source according to actual needs.

Step S2, setting the concentration and blowing parameters of standard alcohol gas on the alcohol detector calibrating device;

the blowing parameters comprise blowing time and blowing flow.

Optionally, the concentration of the standard alcohol gas is 0.1mg/L, 0.4mg/L or 0.6 mg/L; the air blowing time is 6 seconds, and the air blowing flow is 15L/min.

S3, placing the alcohol detector to be detected at the air blowing port of the alcohol detector detecting device, and acquiring the concentration value of the standard alcohol gas output by the air blowing port before air blowing by the management system software;

step S4, starting the alcohol detector calibrating device to blow air, and displaying the reading of the alcohol detector to be calibrated after the air blowing is finished;

s5, the management system software acquires the reading value displayed by the alcohol detector to be verified;

step S6, the management system software automatically analyzes the absolute error and the relative error of the indication value;

specifically, the management system software automatically calculates the absolute error and the relative error of the indication value according to the formula (a) and the formula (b).

ΔC＝C-C₀ (a)

In the formula: delta C is an absolute error of an indication value, mg/L;

ΔC_ris an indication of relative error;

c is a reading value displayed by the alcohol detector to be detected, mg/L;

C₀is an air blowing openingThe concentration value of the output standard alcohol gas is mg/L.

And S7, repeating the steps S2-S6 to measure for a plurality of times, and automatically analyzing by the management system software according to the measurement result to obtain a verification result and automatically generating a verification report of the indicating value error.

Specifically, the management system software automatically calculates the average value of the indication absolute errors and the average value of the indication relative errors according to the indication absolute errors and the indication relative errors measured for a plurality of times, so as to automatically generate a verification report of the indication errors.

It will be appreciated that in order to ensure that the alcohol meter being tested has an accurate reading, the alcohol meter being tested should be zeroed before repeating the measurement. That is, step S5 is followed by a step of zeroing the alcohol meter to be tested so as not to affect subsequent readings of the alcohol meter to be tested.

In the verification method, the measured data is uploaded to a computer, so that more accurate standard alcohol gas concentration can be obtained, and more accurate indication errors can be finally obtained. The problems that the manual recording process of a verification worker is complicated and errors are easy to occur can be solved; on the other hand, the method is beneficial to realizing the automation of the verification process and preventing the verification result from being manually modified.

In the measurement of the indication error, it is necessary to measure 10 times each of the standard alcohol gas concentrations at 0.1mg/L, 0.4mg/L, or 0.6mg/L according to the requirements of the assay protocol to obtain the indication error. And in addition to the indication error measurement, repeatability and memory retention effects need to be measured. The repeatability is measured only 10 times under the condition that the concentration of the standard alcohol gas is set to be 0.4mg/L, so that the repeatability can be observed together when the indicating value error is measured, namely, when the indicating value error is measured by using the concentration of 0.4mg/L, the measurement reading can also be used as the investigation data of the repeatability measurement, and the management system software can automatically obtain the result of the repeatability measurement after the indicating value error measurement of the concentration of 0.4mg/L is completed.

The memory residual effect needs to be measured under the condition that the concentrations of the standard alcohol gas are set to be 0.1mg/L and 0.4mg/L, although the two concentration values are also used in the indication error, the measurement data of the two concentration values in the indication error measurement item cannot be directly cited, because the memory residual effect has the regulation on the measurement sequence of different concentrations, the measurement of 0.4mg/L cannot be directly carried out 10 times after the indication error measurement is finished for 10 times of 0.1mg/L, but the measurement of 0.4mg/L should be carried out 1 time immediately after the indication error measurement is finished for 10 times of 0.1mg/L, and then the measurement of 0.1mg/L is carried out for 1 time, so that the measurement of the memory residual effect is not finished, then the measurement of 0.4mg/L and the measurement of 0.6 mg/L10 times are carried out again as the indication error measurement results, wherein the 10 times of the indication error measurement of 0.4mg/L can also be used as the repeated investigation data, thus, when the memory residual effect is measured, data can be shared with the measurement with the indication error of 0.1mg/L, but then the measurement of 0.4mg/L and the measurement of 0.1mg/L are required to be carried out respectively, so the total test times are 32 times and are less than the 52 measurement times in the prior art, and the working efficiency is improved. In order to achieve the aim, the management system software of the computer can control the alcohol detector calibrating device to calibrate the alcohol detector to be calibrated according to the preset concentration and measurement time sequence of the standard alcohol gas according to the preset command. That is, the management system software of the computer can perform the measurement according to the measurement sequence, i.e. firstly perform 10 times of the indicating error measurement of 0.1mg/L, then perform 1 time of the indicating error measurement of 0.4mg/L, then perform 1 time of the indicating error measurement of 0.1mg/L, and finally perform 10 times of the indicating error measurement of 0.4mg/L and 10 times of the indicating error measurement of 0.6 mg/L.

In summary, the invention provides a method for metrological verification of an alcohol detector, wherein the alcohol detector to be verified and an alcohol detector verification device are both in communication connection with a computer, so as to realize data communication, and management system software on the computer can obtain a concentration value of standard alcohol gas output by an air blowing port of the alcohol detector verification device and a reading value displayed by the alcohol detector to be verified. By uploading the measured data to a computer, a more accurate standard alcohol gas concentration value can be obtained, and a more accurate indication error is finally obtained. The problems that the manual recording process of a verification worker is complicated and errors are easy to occur can be solved; on the other hand, the method is beneficial to realizing the automation of the verification process and preventing the verification result from being manually modified.

As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.