CN102141564A - Automatic detector for analysis speed of coal gas - Google Patents
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Abstract
本发明提供一种煤体瓦斯解析速度自动检测仪，包括被封装为一体的采集模块、主控模块和外部存储模块；采集模块包括n个检测精度相同但量程不同的气体流量传感器，各气体流量传感器根据量程按从大到小的顺序进行切换，n≥2，且n为自然数；气体流量传感器从煤体采样罐采集瓦斯流量；主控模块预设瓦斯解析速度范围，获取实时瓦斯解析速度、瓦斯累积流量，确定工作气体流量传感器；外部存储模块存储瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量。本发明所述检测仪具有检测精度高、现场适应性强等特点，可广泛应用于煤矿等采集行业。
The invention provides an automatic detector for coal gas analysis speed, which includes an acquisition module packaged as one, a main control module and an external storage module; the acquisition module includes n gas flow sensors with the same detection accuracy but different ranges, each gas flow The sensor switches from large to small according to the range, n≥2, and n is a natural number; the gas flow sensor collects the gas flow from the coal sampling tank; the main control module presets the gas analysis speed range to obtain the real-time gas analysis speed, The gas cumulative flow rate is used to determine the working gas flow sensor; the external storage module stores the gas flow rate, collection time, real-time gas resolution speed and gas cumulative flow rate. The detector of the invention has the characteristics of high detection precision, strong field adaptability, etc., and can be widely used in collection industries such as coal mines.
Description
技术领域technical field
本发明涉及检测技术，特别是涉及一种煤体瓦斯解析速度自动检测仪。The invention relates to detection technology, in particular to an automatic detection instrument for coal gas resolution speed.
背景技术Background technique
在新建矿井的通风设计、煤层瓦斯抽放、评价煤层瓦斯的突出危险性等工作中，煤层解析初速度是估算原始瓦斯含量及瓦斯残存含量的关键参数之一，该参数的准确与否对于煤层瓦斯的突出危险性预测和评定有着重要影响。In the ventilation design of new mines, coal seam gas drainage, and evaluation of coal seam gas outburst hazards, etc., the initial velocity of coal seam analysis is one of the key parameters for estimating the original gas content and residual gas content. The prediction and assessment of the outstanding risk of gas has an important influence.
目前，在测定煤层瓦斯含量方面主要有间接测量法、直接检测法和解析检测法。间接检测法通过对煤层和煤样的分析得到煤质、煤层温度等相关参数，进而间接得出煤层的瓦斯含量。间接检测法的误差比较大。直接检测法利用专用采样器材采集现场煤样并封存，带回实验室后经充分释放检测，得到瓦斯含量。直接检测法存在采样过程繁琐、实验室操作复杂、成功率较低的问题。解析检测法利用普通煤芯管采集煤样后，将煤样装入密封罐进行现场解析，根据解析规律推算煤样的部分瓦斯损失量，最后将煤样带回实验室继续解析，确定煤层的总瓦斯含量。解析检测法主要包括排水集气检测、压差检测以及瓦斯解析速度测试三种类型。排水集气检测和压差检测操作复杂、自动化程度低、检测误差较大。瓦斯解析速度测试采用计算机监控、较先进的传感器采集数据，自动化程度高，且消除了人为因素导致的误差；但其主要用于实验室解析，不能适应现场解析的需要。At present, there are mainly indirect measurement methods, direct detection methods and analytical detection methods in the determination of coal seam gas content. The indirect detection method obtains relevant parameters such as coal quality and coal seam temperature through the analysis of coal seams and coal samples, and then indirectly obtains the gas content of coal seams. The error of indirect detection method is relatively large. The direct detection method uses special sampling equipment to collect on-site coal samples and seal them up. After being brought back to the laboratory, they are fully released and tested to obtain the gas content. The direct detection method has the problems of cumbersome sampling process, complicated laboratory operation and low success rate. The analytical detection method uses common coal core pipes to collect coal samples, then puts the coal samples into sealed tanks for on-site analysis, calculates the partial gas loss of the coal samples according to the analysis rules, and finally takes the coal samples back to the laboratory for further analysis to determine the coal seam. total gas content. Analytical detection methods mainly include three types: drainage and gas collection detection, pressure difference detection and gas desorption speed test. Drainage gas collection detection and differential pressure detection are complex operations, low degree of automation, and relatively large detection errors. The gas analysis speed test adopts computer monitoring and more advanced sensors to collect data, which has a high degree of automation and eliminates errors caused by human factors; however, it is mainly used for laboratory analysis and cannot meet the needs of on-site analysis.
由此可见，在现有技术中，对煤样的瓦斯解析检测均需要在实验室进行，无法适应现场状况；而且，尽管瓦斯解析速度测试自动化程度高，消除了人为因素导致的误差，但由于传感器的应用比较单一，因此解析误差仍然比较大。It can be seen that in the prior art, the gas analysis detection of coal samples needs to be carried out in the laboratory, which cannot adapt to the field conditions; moreover, although the gas analysis speed test has a high degree of automation and eliminates errors caused by human factors, due to The application of the sensor is relatively simple, so the analysis error is still relatively large.
发明内容Contents of the invention
有鉴于此，本发明的主要目的在于提供一种检测精度高、现场适应性强的煤体瓦斯解析速度自动检测仪。In view of this, the main purpose of the present invention is to provide an automatic detector of coal gas resolution speed with high detection accuracy and strong field adaptability.
为了达到上述目的，本发明提出的技术方案为：In order to achieve the above object, the technical scheme proposed by the present invention is:
一种煤体瓦斯解析速度自动检测仪，包括被封装为一体的采集模块、主控模块和外部存储模块；采集模块包括n个检测精度相同但量程不同的气体流量传感器，各气体流量传感器根据量程按从大到小的顺序进行切换；其中，n≥2，且n为自然数；不同量程的气体流量传感器对应不同的与瓦斯解析速度范围，大量程的气体流量传感器对应瓦斯解析速度大的瓦斯解析速度范围；An automatic detector for coal gas analysis speed, including an acquisition module packaged as one, a main control module and an external storage module; the acquisition module includes n gas flow sensors with the same detection accuracy but different ranges, each gas flow sensor Switch in order from large to small; among them, n≥2, and n is a natural number; gas flow sensors with different ranges correspond to different ranges of gas resolution speeds, and gas flow sensors with large ranges correspond to gas resolution with large gas resolution speeds speed range;
气体流量传感器，用于从煤体采样罐采集瓦斯流量，对该流量信号滤波后，将流量信号转换为电信号，再将电信号由模拟量转变为数字量，由主控模块确定的工作气体流量传感器将转换为数字量的瓦斯流量发送至主控模块。The gas flow sensor is used to collect gas flow from the coal sampling tank. After filtering the flow signal, the flow signal is converted into an electrical signal, and then the electrical signal is converted from analog to digital. The working gas determined by the main control module The flow sensor sends the converted digital gas flow to the main control module.
主控模块，用于预设各气体流量传感器对应的瓦斯解析速度范围；根据采集时间和工作气体流量传感器发送的瓦斯流量获取实时瓦斯解析速度、瓦斯累积流量，如果实时瓦斯解析速度下降至工作气体流量传感器的量程对应的瓦斯解析速度范围下限，则切断当前的工作气体流量传感器，并将下一顺序的气体流量传感器切换为工作气体流量传感器；还用于将瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量发送至外部存储模块。The main control module is used to preset the gas analysis speed range corresponding to each gas flow sensor; obtain the real-time gas analysis speed and gas cumulative flow rate according to the collection time and the gas flow rate sent by the working gas flow sensor. The lower limit of the gas analysis speed range corresponding to the range of the flow sensor will cut off the current working gas flow sensor, and switch the gas flow sensor in the next sequence to the working gas flow sensor; Velocity and cumulative gas flow are sent to an external storage module.
外部存储模块，用于存储主控模块发送的瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量。The external storage module is used to store the gas flow, collection time, real-time gas analysis speed and gas accumulation flow sent by the main control module.
综上所述，本发明所述煤体瓦斯解析速度自动检测仪根据瓦斯解析速度，由不同量程的气体流量传感器采集瓦斯流量，因此，本发明所述煤体瓦斯解析速度自动检测仪的检测精度较高；本发明所述煤体瓦斯解析速度自动检测仪被封装为一个整体，符合GB 3836.4-2000《爆炸性气体环境用电器设备》，能直接应用于煤矿现场环境，对煤体瓦斯进行解析，而不需要将煤体样本带回实验室进行解析，因此，本发明适应现场的能力较强。To sum up, the coal gas resolution automatic detector of the present invention uses gas flow sensors with different ranges to collect gas flow according to the gas resolution speed. Therefore, the detection accuracy of the coal gas resolution automatic detector of the present invention is Higher; the coal body gas analysis speed automatic detector of the present invention is packaged as a whole, conforms to GB 3836.4-2000 "Electrical Equipment for Explosive Gas Environments", can be directly applied to the coal mine site environment, and analyzes the coal body gas, It is not necessary to bring the coal body sample back to the laboratory for analysis, therefore, the present invention has a strong ability to adapt to the field.
附图说明Description of drawings
图1为本发明所述瓦斯解析速度自动检测仪的第一种组成结构示意图；Fig. 1 is the first composition structure schematic diagram of the gas resolution speed automatic detector of the present invention;
图2为本发明所述瓦斯解析速度自动检测仪的第二种组成结构示意图；Fig. 2 is a schematic diagram of the second composition structure of the gas resolution automatic detector of the present invention;
图3为本发明所述瓦斯解析速度自动检测仪的第三种组成结构示意图；Fig. 3 is a schematic diagram of the third composition and structure of the gas resolution speed automatic detector of the present invention;
图4为本发明所述瓦斯解析速度自动检测仪的第四种组成结构示意图；Fig. 4 is a schematic diagram of the fourth composition and structure of the gas resolution speed automatic detector of the present invention;
图5为本发明中气体流量传感器的组成结构示意图；Fig. 5 is a schematic diagram of the composition and structure of the gas flow sensor in the present invention;
图6为本发明中主控模块的组成结构示意图。Fig. 6 is a schematic diagram of the composition and structure of the main control module in the present invention.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图及具体实施例对本发明作进一步地详细描述。In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
图1为本发明所述瓦斯解析速度自动检测仪的第一种组成结构示意图。如图1所示，本发明所述煤体瓦斯解析速度自动检测仪包括被封装为一体的采集模块1、主控模块2和外部存储模块3；采集模块1包括n个检测精度相同但量程不同的气体流量传感器11～1n，各气体流量传感器11～1n根据量程按从大到小的顺序进行切换；其中，n≥2，且n为自然数；气体流量传感器11～1n根据量程与瓦斯解析速度范围一一对应，大量程的气体流量传感器对应瓦斯解析速度大的瓦斯解析速度范围。Fig. 1 is a schematic diagram of the first composition and structure of the gas resolution automatic detector of the present invention. As shown in Figure 1, the coal gas analysis speed automatic detector of the present invention includes a packaged acquisition module 1, a main control module 2 and an external storage module 3; the acquisition module 1 includes n units with the same detection accuracy but different ranges gas flow sensors 11-1n, and each gas flow sensor 11-1n is switched in order from large to small according to the measuring range; wherein, n≥2, and n is a natural number; the gas flow sensors 11-1n are switched according to the measuring range and gas resolution speed The ranges are one-to-one correspondence, and the gas flow sensor with a large range corresponds to the gas resolution speed range with a large gas resolution speed.
气体流量传感器11～1n，用于从煤体采样罐采集瓦斯流量，对该流量信号滤波后，将流量信号转换为电信号，再将电信号由模拟量转变为数字量，由主控模块2确定的工作气体流量传感器将转换为数字量的瓦斯流量发送至主控模块2。The gas flow sensors 11-1n are used to collect the gas flow from the coal sampling tank. After filtering the flow signal, the flow signal is converted into an electrical signal, and then the electrical signal is converted from analog to digital. The main control module 2 The determined working gas flow sensor converts the gas flow into a digital quantity and sends it to the main control module 2 .
实际应用中，瓦斯释放特点是先快后慢，直至停止。实践中，瓦斯解析速度一般为300毫升/分钟至1毫升/分钟。由于瓦斯流量的变化范围比较宽，气体流量传感器在其检测上下限附近精度低，故采用多个气体流量传感器分段采集的方式。比如，量程为0～500毫升/分钟的气体流量传感器对应的瓦斯解析速度范围为[300毫升/分钟，150毫升/分钟)，量程为0～200毫升/分钟的气体流量传感器对应的瓦斯解析速度范围为[150毫升/分钟，15毫升/分钟)，量程为0～20毫升/分钟的气体流量传感器对应的解析速度范围为[15毫升/分钟，0毫升/分钟)。系统默认从最高量程开始检测。In practical application, the characteristic of gas release is fast at first, then slow until it stops. In practice, the gas resolution rate is generally 300ml/min to 1ml/min. Since the variation range of the gas flow is relatively wide, the accuracy of the gas flow sensor is low near the upper and lower limits of detection, so the method of segmented collection by multiple gas flow sensors is adopted. For example, the range of gas flow sensor with a range of 0 to 500 ml/min corresponds to a gas resolution rate range of [300 ml/min, 150 ml/min), and the range of a gas flow sensor with a range of 0 to 200 ml/min corresponds to a gas resolution rate of The range is [150ml/min, 15ml/min), and the gas flow sensor with a range of 0-20ml/min corresponds to a resolution range of [15ml/min, 0ml/min). The system starts detection from the highest range by default.
主控模块2，用于预设各气体流量传感器11～1n对应的瓦斯解析速度范围；根据采集时间和工作气体流量传感器发送的瓦斯流量获取实时瓦斯解析速度、瓦斯累积流量，如果实时瓦斯解析速度下降至工作气体流量传感器的量程对应的瓦斯解析速度范围下限，则切断当前的工作气体流量传感器，并将下一顺序的气体流量传感器切换为工作气体流量传感器；还用于将瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量发送至外部存储模块3。The main control module 2 is used to preset the gas analysis speed range corresponding to each gas flow sensor 11~1n; obtain the real-time gas analysis speed and the gas accumulation flow rate according to the collection time and the gas flow rate sent by the working gas flow sensor, if the real-time gas analysis speed Drop to the lower limit of the gas analysis speed range corresponding to the range of the working gas flow sensor, then cut off the current working gas flow sensor, and switch the next sequential gas flow sensor to the working gas flow sensor; it is also used to set the gas flow, collection time , real-time gas analysis speed and gas accumulation flow are sent to the external storage module 3 .
本发明中，主控模块2采用51系列单片机。In the present invention, the main control module 2 adopts a 51 series single-chip microcomputer.
外部存储模块3，用于存储主控模块2发送的瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量。The external storage module 3 is used to store the gas flow, collection time, real-time gas analysis speed and gas accumulation flow sent by the main control module 2.
实际应用中，所述外部存储模块3为SD卡(安全数码卡，Secure Digital Memory Card)。In practical applications, the external storage module 3 is an SD card (Secure Digital Memory Card).
本发明中，外部存储模块3采用了SD接口设计。In the present invention, the external storage module 3 adopts an SD interface design.
总之，为了提高本发明所述煤体瓦斯解析速度自动检测仪的检测精度，采集模块采用不同量程的多个气体流量传感器从煤体采样罐采集瓦斯流量，主控模块根据实时瓦斯解析速度从多个气体流量传感器中确定工作气体流量传感器，进而获取精度较高的瓦斯解析速度。由于煤体解析时间较长，且往往需要多批次检测，因此采用容量较大的外部存储模块存储采集数据和分析数据。主控模块根据采集数据进行煤体解析，并根据解析速度控制气体流量传感器的切换。本发明中，采集模块、主控模块、外部存储模块被封装为一个整体，符合GB 3836.4-2000《爆炸性气体环境用电器设备》，能直接在煤矿现场进行煤体解析，具有较强的现场适应能力，并且具有操作简单的特点。由此可见，本发明所述煤体瓦斯解析速度自动检测仪可排除人为因素的影响，有效减少误差，提高检测结果的可靠性，以利于矿井的通风设计、煤层瓦斯抽放及评价煤层瓦斯的突出危险性等工作的顺利进行。In short, in order to improve the detection accuracy of the coal gas analysis speed automatic detector of the present invention, the acquisition module uses multiple gas flow sensors with different ranges to collect gas flow from the coal sampling tank, and the main control module selects the gas flow rate from multiple gas flow sensors according to the real-time gas analysis speed. Determine the working gas flow sensor among the two gas flow sensors, and then obtain a gas resolution rate with high accuracy. Since coal body analysis takes a long time and often requires multiple batches of detection, an external storage module with a large capacity is used to store the collected data and analyzed data. The main control module analyzes the coal body according to the collected data, and controls the switching of the gas flow sensor according to the analysis speed. In the present invention, the acquisition module, the main control module, and the external storage module are packaged as a whole, conforming to GB 3836.4-2000 "Electrical Equipment for Explosive Gas Environments", and can directly analyze the coal body at the coal mine site, with strong site adaptability ability, and has the characteristics of simple operation. It can be seen that the coal gas analysis speed automatic detector of the present invention can eliminate the influence of human factors, effectively reduce errors, and improve the reliability of detection results, so as to facilitate mine ventilation design, coal seam gas drainage and evaluation of coal seam gas. The smooth progress of work such as highlighting risks.
图2为本发明所述瓦斯解析速度自动检测仪的第二种组成结构示意图。如图2所示，本发明所述煤体瓦斯解析速度自动检测仪除了包括图1所示的组成部分外，还封装有键盘4，用于预设气体流量传感器11～1n的瓦斯解析速度范围，并将瓦斯解析速度范围发送至主控模块2。Fig. 2 is a schematic diagram of the second composition and structure of the gas resolution automatic detector of the present invention. As shown in Figure 2, in addition to the components shown in Figure 1, the coal body gas resolution automatic detector of the present invention is also packaged with a keyboard 4, which is used to preset the gas resolution range of the gas flow sensors 11-1n , and send the gas analysis speed range to the main control module 2.
实际应用中，键盘4采用了4×4矩阵式键盘，其除了可以设置气体流量传感器11～1n的瓦斯解析速度范围等参数外，还可以实现工作模式选择、输入或显示模式控制等功能。In practical application, the keyboard 4 adopts a 4×4 matrix keyboard, which can not only set parameters such as the gas resolution speed range of the gas flow sensors 11-1n, but also realize functions such as working mode selection, input or display mode control, and the like.
图3为本发明所述瓦斯解析速度自动检测仪的第三种组成结构示意图。如图3所示，所述煤体瓦斯解析速度自动检测仪除了包括图2所示的组成部分外，还封装有显示模块5；其中，Fig. 3 is a schematic diagram of the third composition and structure of the gas resolution automatic detector of the present invention. As shown in Figure 3, in addition to the components shown in Figure 2, the automatic detector of coal gas resolution speed is also packaged with a display module 5; wherein,
主控模块2，还用于将采集时间、实时瓦斯解析速度、瓦斯累积流量、当前工作时间发送至显示模块5。The main control module 2 is also used to send the collection time, real-time gas analysis speed, cumulative gas flow, and current working time to the display module 5 .
键盘4，还用于对显示模块5进行显示控制。The keyboard 4 is also used to control the display of the display module 5 .
实际应用中，如果需要在现场回看检测数据，那么，显示模块5可以在键盘4的控制下，将已存储数据显示出来。In practical applications, if it is necessary to review the detection data on site, the display module 5 can display the stored data under the control of the keyboard 4 .
显示模块5，用于显示主控模块2发送的采集时间、实时瓦斯解析速度、瓦斯累积流量、当前工作时间；或者，在键盘4的控制下，从外部存储模块3读取并显示瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量。The display module 5 is used to display the collection time sent by the main control module 2, the real-time gas analysis speed, the cumulative gas flow, and the current working time; or, under the control of the keyboard 4, read and display the gas flow from the external storage module 3, Acquisition time, real-time gas analysis speed and gas accumulation flow.
实际应用中，显示模块5采用了LCD液晶显示方式。为了适应井下光线较暗的不利条件，显示模块5具有LCD背景光可调功能。In practical application, the display module 5 adopts LCD liquid crystal display mode. In order to adapt to the unfavorable conditions of dark light in the well, the display module 5 has an adjustable LCD backlight function.
图4为本发明所述瓦斯解析速度自动检测仪的第四种组成结构示意图。如图4所示，本发明所述煤体瓦斯解析速度自动检测仪除了包括如图3所示的各组成部分外，还封装有上位机通讯接口6，用于连通所述煤体瓦斯解析速度自动检测仪与上位机，并将从外部存储模块3所读取的瓦斯流量、采集时间、实时瓦斯解析速度和瓦斯累积流量转发至上位机。Fig. 4 is a schematic diagram of the fourth composition and structure of the gas resolution automatic detector of the present invention. As shown in Figure 4, in addition to the various components shown in Figure 3, the coal gas analysis speed automatic detector of the present invention is also packaged with a host computer communication interface 6, which is used to communicate with the coal body gas analysis speed Automatically detect the instrument and the upper computer, and forward the gas flow, collection time, real-time gas analysis speed and gas accumulation flow read from the external storage module 3 to the upper computer.
实际应用中，上位机通讯接口6采用USB接口，本发明所述煤体瓦斯解析速度自动检测仪可以通过USB接口与上位机通讯，实现数据交换、程序维护与更新、系统软件调试等功能。In practical application, the upper computer communication interface 6 adopts a USB interface, and the coal gas analysis speed automatic detector of the present invention can communicate with the upper computer through the USB interface to realize functions such as data exchange, program maintenance and update, and system software debugging.
图5为本发明中气体流量传感器的组成结构示意图。如图5所示，气体流量传感器11～1n中的任一气体流量传感器1i，均包括预处理单元1i1、流量/电信号转换单元1i2和A/D转换单元1i3；其中，i＝2，3，...，n；Fig. 5 is a schematic diagram of the composition and structure of the gas flow sensor in the present invention. As shown in Figure 5, any gas flow sensor 1i among the gas flow sensors 11-1n includes a preprocessing unit 1i1, a flow/electrical signal conversion unit 1i2 and an A/D conversion unit 1i3; wherein, i=2,3 ,...,n;
预处理单元1i1，用于对气体流量传感器11～1n采集的表示瓦斯流量的流量信号进行滤波处理，并将处理后的流量信号发送至流量/电信号转换单元1i2。The preprocessing unit 1i1 is used to filter the gas flow signals collected by the gas flow sensors 11-1n, and send the processed flow signals to the flow/electrical signal conversion unit 1i2.
流量/电信号转换单元1i2，用于将预处理单元1i1发送的流量信号转换为电信号后发送至A/D转换单元1i3。The flow/electrical signal conversion unit 1i2 is configured to convert the flow signal sent by the preprocessing unit 1i1 into an electrical signal and send it to the A/D conversion unit 1i3.
A/D转换模块1i3，用于将流量/电信号转换单元1i2发送的电信号由模拟量转换为数字量后，发送至主控模块2。The A/D conversion module 1i3 is used to convert the electrical signal sent by the flow/electrical signal conversion unit 1i2 from analog to digital, and then send it to the main control module 2 .
图6为本发明中主控模块的组成结构示意图。如图6所示，主控模块2包括运算单元21、内部存储单元22和控制单元23；其中，Fig. 6 is a schematic diagram of the composition and structure of the main control module in the present invention. As shown in Figure 6, the main control module 2 includes a computing unit 21, an internal storage unit 22 and a control unit 23; wherein,
运算单元21，用于根据采集时间和工作气体流量传感器发送的瓦斯流量获取实时瓦斯解析速度、瓦斯累积流量，并在控制单元23的控制下，将瓦斯流量、采集时间、瓦斯解析速度、瓦斯累积流量发送至外部存储模块3；从内部存储单元22中读取工作气体流量传感器对应的预设的瓦斯解析速度范围，对实时斯解析速度与读取的瓦斯解析速度范围进行比较，并将比较结果发送至控制单元23。The computing unit 21 is used to obtain the real-time gas analysis speed and gas accumulation flow rate according to the collection time and the gas flow rate sent by the working gas flow sensor, and under the control of the control unit 23, the gas flow rate, collection time, gas analysis speed, and gas accumulation flow rate are calculated. The flow rate is sent to the external storage module 3; the preset gas resolution speed range corresponding to the working gas flow sensor is read from the internal storage unit 22, the real-time gas resolution speed is compared with the read gas resolution speed range, and the comparison result sent to the control unit 23.
内部存储单元22，用于存储预设的各气体流量传感器11～1n的量程对应的瓦斯解析速度范围。The internal storage unit 22 is used to store the gas resolution ranges corresponding to the ranges of the preset gas flow sensors 11-1n.
控制单元23，用于接收运算单元21发送的比较结果，当实时瓦斯解析速度下降至工作气体流量传感器对应的瓦斯解析速度范围下限时，切断当前的工作气体流量传感器，并将下一顺序的气体流量传感器切换为工作气体流量传感器。The control unit 23 is used to receive the comparison result sent by the computing unit 21, and when the real-time gas analysis speed drops to the lower limit of the gas analysis speed range corresponding to the working gas flow sensor, cut off the current working gas flow sensor and send the next sequence of gas The flow sensor is switched to a working gas flow sensor.
实际应用中，为提高本发明采集数据的存储速度和可靠性，主控模块2还可包括64K的数据缓存模块。In practical applications, in order to improve the storage speed and reliability of the collected data in the present invention, the main control module 2 may also include a 64K data cache module.
实际应用中，本发明所述煤体瓦斯解析速度自动检测仪可通过上位机通讯接口连接上位机。上位机可以从外部存储模块读取原始检测数据和分析数据，并对原始检测数据和分析数据进行进一步的分析，监测瓦斯释放趋势等特性；另外，上位机还可对本发明所述煤体瓦斯解析速度自动检测仪进行软件更新、调试和维护。In practical application, the coal gas analysis speed automatic detector of the present invention can be connected to the host computer through the host computer communication interface. The upper computer can read the original detection data and analysis data from the external storage module, and further analyze the original detection data and analysis data, monitor the gas release trend and other characteristics; in addition, the upper computer can also analyze the coal gas in the present invention Automatic speed detector for software update, debugging and maintenance.
实际应用中，本发明所述煤体瓦斯解析速度自动检测仪还封装有直流电源，用于为采集模块、主控模块、键盘、显示模块供电。In practical application, the coal gas analysis speed automatic detector of the present invention is also packaged with a DC power supply for supplying power to the acquisition module, the main control module, the keyboard and the display module.
综上所述，以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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