1. An inhalable dust concentration detection device, the device comprising: the device comprises a dust filtering device, a dust concentration detection device, a human body breathing characteristic simulation device, a sensor and a control center; the sensor comprises a differential pressure sensor, a flow sensor and a human body respiratory frequency monitoring device;

the dust filtering device, the dust concentration detection device and the human body breathing characteristic simulation device are sequentially connected through a pipeline;

the pressure difference sensor is arranged at the input end and the output end of the dust filtering device and is used for collecting the pressure difference at the two ends of the dust filtering device;

the flow sensor is arranged on a pipeline connecting the dust concentration detection device and the human body respiration characteristic simulation device and is used for collecting the gas flow in the pipeline;

the human body respiratory frequency monitoring device is used for monitoring human body respiratory frequency information;

the control center is respectively connected with the pressure difference sensor, the flow sensor and the human body respiratory frequency monitoring device, integrates the human body respiratory frequency information, the gas flow in the pipeline and the pressure difference at two ends of the dust filtering device, and adjusts the motion state of the human body respiratory characteristic simulation device, so that the gas flow speed of the pipeline is approximate to the respiratory gas quantity of a worker.

2. The inhalable dust concentration detection device according to claim 1, wherein the dust filtering device is a filter membrane clamp provided with a mask.

3. The inhalable dust concentration detection device according to claim 1, wherein the dust concentration detection device detects the concentration of dust particles in the pipeline by using a light scattering method, and specifically comprises: the device comprises a scattering ball, a laser, a light trap, a photodiode and a dust concentration detection circuit;

the laser and the optical trap are arranged at two ends of the diameter of the scattering ball and are in a straight line; the photodiode is arranged on the spherical surface and is connected with the dust concentration detection circuit, so that the concentration of dust particles is detected.

4. The inhalable dust concentration detection device according to claim 1, wherein the human respiratory rate monitoring device comprises a human respiratory rate monitor and a human respiratory rate receiver; the human body respiratory frequency monitor is arranged on a human body and is transmitted to the human body respiratory frequency receiver in a wireless transmission mode.

5. The inhalable dust concentration detection device according to claim 1, wherein the human respiration characteristic simulation device employs an adjustable fan.

Background

A large amount of dust is generated in coal mining operation places, the particle sizes of the dust are different, however, the dust harmful to human bodies is respiratory dust below 10 mu m, occupational pneumoconiosis is easy to occur when the dust is contacted with the respiratory dust for a long time, workers are forced to make individual protection and wear masks, the dust contacted with the workers is the dust concentration after the masks are filtered, and therefore the dust contacted with the workers is not dust floating outside (the dust concentration is different).

Because the occupational health requirement of the coal mine is more and more strict, the requirement for detecting the dust concentration is more and more strict, all dust concentrations, namely dust of various particle sizes floating in the air, are tested by the dust concentration sensor at present, because every worker in the coal mine is provided with a mask, the dust in a human body suction inlet and a nasal cavity can not be represented.

Therefore, there is a need for a device capable of detecting the concentration of dust on human body after individual protection.

Disclosure of Invention

In view of the above, the present invention provides an inhalable dust concentration detection apparatus and method, which are used for simulating and detecting the dust concentration absorbed by a human body after individual protection, so as to test the amount of dust inhaled after individual protection of the human body and provide data support for the occupational health of workers.

In order to achieve the purpose, the invention provides the following technical scheme:

an inhalable dust concentration detection device comprising: the device comprises a dust filtering device, a dust concentration detection device, a human body breathing characteristic simulation device, a sensor and a control center; the sensor comprises a differential pressure sensor, a flow sensor and a human body respiratory frequency monitoring device;

the dust filtering device, the dust concentration detection device and the human body breathing characteristic simulation device are sequentially connected through a pipeline;

the pressure difference sensor is arranged at the input end and the output end of the dust filtering device and is used for collecting the pressure difference at the two ends of the dust filtering device;

the flow sensor is arranged on a pipeline connecting the dust concentration detection device and the human body respiration characteristic simulation device and is used for collecting the gas flow in the pipeline;

the human body respiratory frequency monitoring device is used for monitoring human body respiratory frequency information;

the control center is respectively connected with the pressure difference sensor, the flow sensor and the human body respiratory frequency monitoring device, integrates the human body respiratory frequency information, the gas flow in the pipeline and the pressure difference at two ends of the dust filtering device, and adjusts the motion state of the human body respiratory characteristic simulation device, so that the gas flow speed of the pipeline is approximate to the respiratory gas quantity of a worker.

Preferably, the dust filtering device can adopt a filter membrane clamp provided with a mask.

Preferably, the dust concentration detection device detects the concentration of dust particles in the pipeline by using a light scattering method, and specifically comprises: the device comprises a scattering ball, a laser, a light trap, a photodiode and a dust concentration detection circuit;

the laser and the optical trap are arranged at two ends of the diameter of the scattering ball and are in a straight line; the photodiode is arranged on the spherical surface and is connected with the dust concentration detection circuit, so that the concentration of dust particles is detected.

Preferably, the human body respiratory frequency monitoring device comprises a human body respiratory frequency monitor and a human body respiratory frequency receiver; the human body respiratory frequency monitor is arranged on a human body and is transmitted to the human body respiratory frequency receiver in a wireless transmission mode.

Preferably, the human respiration characteristic simulation device adopts an adjustable fan.

The invention has the beneficial effects that: the device can simulate and detect the dust concentration absorbed by the human body after individual protection, test the dust amount absorbed after the individual protection of the human body, and provide data support for the occupational health of workers.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of an inhalable dust concentration detection device according to the invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Referring to fig. 1, the present embodiment provides an inhalable dust concentration detection apparatus, including: the device comprises a dust filtering device, a dust concentration detection device, a human body breathing characteristic simulation device, a sensor and a control center; the sensor comprises a differential pressure sensor, a flow sensor and a human body respiratory frequency monitoring device;

the dust filtering device, the dust concentration detection device and the human body respiration characteristic simulation device are sequentially connected through a pipeline; the differential pressure sensor is arranged at the input end and the output end of the dust filtering device and is used for collecting the differential pressure at the two ends of the dust filtering device; the flow sensor is arranged on a pipeline which is connected with the dust concentration detection device and the human body respiration characteristic simulation device and is used for collecting the gas flow in the pipeline; the human body respiratory frequency monitoring device is used for monitoring the human body respiratory frequency information; the control center is respectively connected with the pressure difference sensor, the flow sensor and the human body respiratory frequency monitoring device, integrates the human body respiratory frequency information, the gas flow in the pipeline and the pressure difference at two ends of the dust filtering device, and adjusts the motion state of the human body respiratory characteristic simulation device, so that the gas flow speed of the pipeline is approximate to the respiratory gas quantity of workers.

In this implementation, dust concentration detection device adopts the dust particulate matter concentration in the light scattering method detection pipeline, specifically includes: the device comprises a scattering ball, a laser, a light trap, a photodiode and a dust concentration detection circuit. The laser and the optical trap are arranged at two ends of the diameter of the scattering ball and are in a straight line; the photodiode sets up on the sphere, with dust concentration detection circuit connection to detect out dust particulate matter concentration.

In this embodiment, the human respiratory rate monitor device includes a human respiratory rate monitor and a human respiratory rate receiver. The human body respiratory frequency monitor is arranged on a human body and is transmitted to the human body respiratory frequency receiver in a wireless transmission mode.

In this embodiment, the dust filtering device is a filter membrane clamp with a mask.

In this implementation, the human respiration characteristic simulation device adopts an adjustable fan.

The specific detection method of the inhalable dust concentration detection device designed in the embodiment is as follows: the human body respiratory frequency monitor is arranged on a worker, is transmitted to a human body respiratory frequency receiver in a wireless transmission mode, then transmits the respiratory state of each worker to the control center, and the control center collects the human body respiratory frequency information, the pressure difference at two ends of the filter membrane clamp and the gas flow in the pipeline, adjusts the motion state of the fan and enables the gas flow speed of the pipeline to be approximate to the respiratory gas amount of the worker. The concentration of the particles in the pipeline is detected by a light scattering method, so that the dust concentration which can be contacted with a human body can be monitored in real time.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.