CN105651741A - Laser gas analyzer - Google Patents
Laser gas analyzer Download PDFInfo
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- CN105651741A CN105651741A CN201510665721.9A CN201510665721A CN105651741A CN 105651741 A CN105651741 A CN 105651741A CN 201510665721 A CN201510665721 A CN 201510665721A CN 105651741 A CN105651741 A CN 105651741A
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Abstract
A laser gas analyzer includes a light emitter which emits a laser light irradiated onto a gas to be measured; a light receiver which receives a laser light which transmitted the gas to be measured; a plurality of optical-axis adjustment mechanisms, one of which is provided in the light emitter and the other one of which is provided in the light receiver; a main display which is provided in one of the light emitter and the light receiver and displays thereon the measured result acquired by receiving the laser light which transmitted the gas to be measured; and a sub-display which is provided in the other one of the light emitter and the light receiver and displays thereon a part of the measured result displayed on the main display.
Description
The cross reference of related application
This application claims in the right of priority of the Japanese patent application No.2014-243132 of submission on December 1st, 2014 and the Japanese patent application No.2015-139847 in submission on July 13rd, 2015, the content of described application is incorporated herein by reference.
Technical field
Embodiments of the invention relate to laser gas analysis device.
Background technology
Laser gas analysis device is so a kind of device, and it is by laser illumination on gas to be measured, and the composition being included in gas to be measured and concentration thereof etc. are measured by the absorption spectrum based on the laser penetrating gas to be measured. This laser gas analysis device is configured to generally include the light emission device launched by the laser for being irradiated on gas to be measured and the optical receiver received by the laser penetrating gas to be measured. This kind of laser gas analysis device is usually installed as and makes light emission device and optical receiver facing with each other, has the smoke pipe being arranged between them simultaneously. By smoke pipe, gas to be measured is guided.
In the optical axis adjustment mechanism light emission device that is arranged on laser gas analysis device and optical receiver, it is the mechanism for optical axis adjustment, and performs the adjustment of the optical axis between light emission device and optical receiver when periodicity or aperiodicity are safeguarded and when installing laser gas analysis device. This is because, when there is deviation between the optical axis and the optical axis of optical receiver of light emission device, the light quantity of the laser received in optical receiver reduces, so that measuring accuracy reduces.
Usually the optical axis adjustment between the light emission device of laser gas analysis device and optical receiver is performed according to following program:
(1) optical axis of light emission device is adjusted so that the transmittance of laser is maximum;
(2) optical axis of optical receiver is adjusted so that the transmittance of laser is maximum; And
(3) optical axis of light emission device is adjusted so that the transmittance of laser is maximum.
JP2010-096631A discloses an example of the laser gas analysis device that can adjust optical axis in wide region.
In the laser gas analysis device of prior art, the composition being included in gas to be measured and concentration thereof etc. are calculated by calculating device; And show calculation result or the measuring result of calculating device. Therefore, workman oneself can perform the optical axis adjustment of the light emission device of said procedure (1) and (3) while the transmittance of the displaying contents of indicating meter or laser is checked by it.But, workman oneself is difficult to perform the optical axis adjustment of the optical receiver of description in above program (2), this is because workman can by the transmittance of visual inspection laser.
Therefore, at present, the workman of optical axis adjustment performing light emission device arranges in pairs or groups work with the workman of the optical axis adjustment performing optical receiver, and when the optical axis performing optical receiver adjusts, while utilizing the displaying contents of communicator (such as transceiver, mobile telephone, PHS or personal hand-held phone system etc.) transmission indicating meter, perform the optical axis adjustment of optical receiver. Like this, owing at least needing the fact of optical axis adjustment that two workmans perform between the light emission device of laser gas analysis device and optical receiver so that current efficiency is very low.
In addition, when the diameter of smoke pipe along the light emission device of laser gas analysis device and optical receiver reaches tens meters, the situation that optical axis exists small deviation all can make the transmittance of laser obviously reduce. In this case, although it is not impossible that the optical axis performing optical receiver while utilizing communicator to transmit display contents by performing the method for optical axis adjustment adjusts, but relative to performing the method for optical axis adjustment while the content of workman's visual inspection indicating meter, task efficiency then substantially reduces.
Summary of the invention
In view of above-mentioned situation, an object of embodiments of the invention is to provide a kind of laser gas analysis device, and it can so that a workman oneself can perform optical axis adjustment effectively.
According to embodiments of the invention, it provides a kind of laser gas analysis device, comprising: light emission device, and the laser being irradiated on gas to be measured is launched by it; Optical receiver, the laser penetrating gas to be measured is received by it; Multiple optical axis adjustment mechanism, one of them is arranged in described light emission device, and wherein another is arranged in described optical receiver; Base display unit, it is arranged in one of described light emission device and described optical receiver, and shows the measuring result penetrating the laser of gas to be measured and obtain by receiving thereon; And sub-display, it is arranged in another in described light emission device and described optical receiver, and a part for measuring result shown on base display unit is shown thereon.
In addition, in laser gas analysis device according to an embodiment of the invention, described base display unit shows the information of the transmittance for the concentration and laser representing gas to be measured at least thereon, and the display of described sub-display is for representing the part of information as measuring result for the transmittance of laser.
In addition, laser gas analysis device also comprises calculating device according to an embodiment of the invention, it is arranged in one of described light emission device and optical receiver, and the light receiving signal utilizing the laser penetrating gas to be measured by receiving and obtaining carrys out computation and measurement result.
In addition, in laser gas analysis device according to an embodiment of the invention, described base display unit and described calculating device are arranged in optical receiver, and described sub-display is arranged in described light emission device.
In addition, laser gas analysis device also comprises the storer storing laser-transmitting than threshold value according to an embodiment of the invention, and wherein said base display unit and described sub-display are when the transmittance of laser is no more than described threshold value and show the part of described measuring result and described measuring result when the transmittance of laser exceedes described threshold value in different modalities.
In addition, laser gas analysis device also comprises output terminal according to an embodiment of the invention, and it exports different signals in outside, different when described signal exceedes described threshold value when the transmittance of laser is no more than described threshold value with the transmittance of laser.
In addition, in laser gas analysis device according to an embodiment of the invention, at least one in described base display unit and sub-display changes described displaying contents at least partially for each computation period of described calculating device.
In addition, in laser gas analysis device according to an embodiment of the invention, it is included in for the luminous element of each computation period luminescence of described calculating device at least one of described light emission device and described optical receiver.
According to embodiments of the invention, it provides a kind of laser gas analysis device, comprising: light emission device, the laser being irradiated on gas to be measured is launched by it, optical receiver, the laser penetrating gas to be measured is received by it, multiple optical axis adjustment mechanism, one of them is arranged in described light emission device, and wherein another is arranged in described optical receiver, base display unit, it is arranged in described optical receiver, and shows the measuring result penetrating the laser of gas to be measured and obtain by receiving thereon, sub-display, it is arranged in described light emission device, and a part for measuring result shown on base display unit is shown thereon, calculating device, it is arranged in described optical receiver, and the light receiving signal utilizing the laser penetrating gas to be measured by receiving and obtaining described measuring result to be performed calculating, and the measuring result calculated comprises the transmittance of laser, and storer, it stores the threshold value of the transmittance of laser, the transmittance of the threshold value stored in storer with the laser utilizing light receiving signal to obtain is compared by wherein said calculating device, determine whether the transmittance of laser exceedes the threshold value stored, and make measuring result be displayed on described base display unit in the first pattern when the transmittance of laser is no more than the threshold value stored, and make measuring result be displayed on described base display unit in a second mode when the transmittance of laser exceedes the threshold value stored, and described first pattern and described two modes are different from each other.
In addition, in laser gas analysis device according to an embodiment of the invention, when the transmittance of laser is no more than the threshold value stored, described calculating device also makes measuring result be displayed on described sub-display in a third mode, and when the transmittance of laser exceedes the threshold value stored, described calculating device makes measuring result be displayed on described sub-display with four-mode, and described 3rd pattern and described four-mode are different from each other.
According to embodiments of the invention, the measuring result that the laser penetrating gas to be measured by receiving is obtained by base display unit shows, it is arranged on one of light emission device and optical receiver, and a part for the measuring result of display on described base display unit is shown by sub-display, it is arranged on another in light emission device and optical receiver, thus a workman can be made effectively to perform optical axis adjustment.
Accompanying drawing explanation
Fig. 1 is the diagram of the illustrative arrangement illustrating laser gas analysis device according to one embodiment of present invention;
Fig. 2 is the skeleton view of the optical axis adjustment mechanism illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention;
Fig. 3 is the diagram of an example of the displaying contents of the base display unit illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention;
Fig. 4 is the diagram of an example of the displaying contents of the sub-display illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention;
Fig. 5 is the block diagram of the electricity configuration illustrating laser gas analysis device according to one embodiment of present invention;
Fig. 6 is the schema of the optical axis adjustment programme illustrating laser gas analysis device 1 according to one embodiment of present invention;
Fig. 7 A and Fig. 7 B is the diagram of the illustrative report of the replacement cycle illustrated in sub-display according to one embodiment of present invention;
Fig. 8 A and Fig. 8 B is the diagram of an illustrative report of the replacement cycle illustrated in base display unit according to one embodiment of present invention;
Fig. 9 is the diagram of another illustrative report of the replacement cycle illustrated in sub-display according to one embodiment of present invention; And
Figure 10 is the diagram of an illustrative report again of the replacement cycle illustrated in base display unit according to one embodiment of present invention.
Embodiment
Describe laser gas analysis device according to one embodiment of present invention with reference to the accompanying drawings. Fig. 1 is the diagram of the illustrative arrangement illustrating laser gas analysis device according to one embodiment of present invention. As shown in Figure 1, laser gas analysis device 1 according to current embodiment comprises light emission device 10 and optical receiver 20, light emission device 10 and optical receiver 20 are installed as and make them facing with each other, treat smoke pipe that measurement gas X carries out guiding or pipeline P arranges between which simultaneously, laser gas analysis device 1 is by laser illumination on the gas X to be measured flowed at pipeline P, and the composition being included in gas X to be measured and concentration thereof etc. are measured by the absorption spectrum based on the laser penetrating gas to be measured.
The fixing flange F 1 of the arm B1 that light emission device 10 is mounted on the sidewall being formed in pipeline P, the laser exposed on the gas X to be measured flowing through pipeline P is launched by it. The laser launched from light emission device 10 is directed to pipeline P through the inside of arm B1. This light emission device 10 comprises light emission device main body 10a and optical axis adjustment mechanism 10b.
Light emission device main body 10a contains the luminous element (not shown) of optical element (not shown), the such as semiconductor laser etc. of such as collimating lens etc., and the laser exposed on the gas X to be measured flowing through pipeline P is launched by it. In addition, the sub-display D2 being described in detail below is arranged in this light emission device main body 10a. Optical axis adjustment mechanism 10b is the mechanism of the optical axis for adjusting light emission device 10.
The fixing flange F 2 of the arm B2 (or being formed as arranging arm on the same line with arm B1) that optical receiver 20 is mounted on the sidewall being formed in pipeline P, to penetrating, the laser at the gas X to be measured of pipeline P flowing receives to determine absorption spectrum optical receiver 20, and the composition being included in gas X to be measured and concentration thereof is measured based on this absorption spectrum. The laser penetrating gas X to be measured is directed to optical receiver 20 through arm B2 inside. This optical receiver 20 comprises optical receiver main body 20a and optical axis adjustment mechanism 20b.
Optical receiver main body 20a contains the light receiving element (not shown) of optical element (not shown), the such as photorectifier etc. of such as positive lens etc., and the laser penetrating gas X to be measured is received and measures the composition being included in gas X to be measured and concentration thereof etc. by it. Optical axis adjustment mechanism 20b is the mechanism of the optical axis for adjusting optical receiver 20.
Fig. 2 is the skeleton view of the optical axis adjustment mechanism illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention.It is arranged on the adjustment mechanism 10b of the optical axis in light emission the device 10 and optical axis adjustment mechanism 20b that is arranged in optical receiver 20 and represents same mechanism, therefore the optical axis adjustment mechanism 10b being arranged in light emission device 10 is described. As shown in Figure 2, optical axis adjustment mechanism 10b comprises installation flange 10c, installs flange 10d and regulator 10e. Installing flange 10c is the flange being mounted in fixing flange F 1 for optical axis adjusts mechanism 10b, and installs flange 10d and adjust the flange on mechanism 10b for light emission device main body 10a is mounted to optical axis. Regulator 10e comprises corrugated tube BL and four adjustment screw rod N.
Corrugated tube BL as flexible cylinder shape pipe is set to: make its periphery covering optical path or the optical path of the laser between installation flange 10c and installation flange 10d. More specifically, corrugated tube BL is mounted to and installs on flange 10c, thus make its one end be centered around the whole periphery of the hole (not shown) being formed at the centre portions installing flange 10c, and its other end is centered around the whole periphery of the hole (not shown) being formed at the centre portions installing flange 10d.
Adjustment screw rod N couples and the screw rod that the optical axis of light emission device 10 adjusted for making installation flange 10c and install flange 10d, and it is circumferentially disposed at equal intervals at the exterior periphery avris of corrugated tube BL. One or more rotation amount in adjustable these four adjustment screw rod N is to adjust arbitrarily to the gradient of light emission device main body 10a or relative to the gradient in the face parallel with fixing flange F 1.
Fig. 3 is the diagram of an example of the displaying contents of the base display unit illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention. The base display unit D1 being arranged in optical receiver 20 is such as liquid-crystal display or LCD, and it shows multiple measuring result (or concentration of gas X to be measured) and the transmittance of laser by being received and obtain by the laser penetrating gas X to be measured.
In the example depicted in fig. 3, by " 10.0% " concentration " O as gas X to be measured2" display, " 94.8% " transmittance " Trans " as described laser is shown, and " 89.71 DEG C " temperature " TempActA " as gas X to be measured is shown. In addition, show " LaserCurrLow " or instruction to be supplied to the electric current etc. of luminous element of semiconductor laser very little as warning " FLT " and show " XXXXXXXX " sequence number " SN " as laser gas analysis device 1. In addition to that, the instruction information of measuring condition or such as useful range can be shown. In addition, relative to the display of described warning, the lamp of separation can be set at the periphery of base display unit D1, and show the generation of warning by turning on lamp.
Fig. 4 is the diagram of an example of the displaying contents of the sub-display illustrated in the laser gas analysis device being arranged on according to one embodiment of present invention. The sub-display D2 being arranged in the light emission device main body 10a of light emission device 10 is such as 7 sections of LED or photodiode, and a part for the measuring result of display on base display unit D1 is shown by it. In the example depicted in fig. 4, the transmittance " 94.8 " of the laser of display on base display unit D1 is shown.
Base display unit D1 needs shown in Fig. 3 show the multiple measuring results by being received and obtain by the laser penetrating gas X to be measured, warning etc., thus use the indicating meter of such as liquid-crystal display etc. On the other hand, sub-display D2 only uses when the optical axis of light emission device 10 adjusts substantially, and it meets the needs of a part (or transmittance of laser shown in the example depicted in fig. 4) for the displaying contents of base display unit D1, thus uses the indicating meter of such as 7 sections of LED indicating meters etc. to reduce costs.
Fig. 5 is the block diagram of the electricity configuration illustrating laser gas analysis device according to one embodiment of present invention. As shown in Figure 5, except above-mentioned sub-display D2, the light emission device 10 of laser gas analysis device 1 comprises luminous module 11, input 12 and controller 13. In addition, the optical receiver 20 of laser gas analysis device 1 comprises Optical Receivers 21, computing controller 22 or calculating device, storer 23, exports 24 and output terminal 25.
Luminous module 11 comprises the luminous element of such as semiconductor laser etc., and it launches the laser L on the gas X to be measured that will be irradiated in pipeline P to flow under the control of controller 13. The wavelength of the laser L launched from luminous module 11 is set according to gas X to be measured. Input 12 is connected to the output 24 being arranged in optical receiver 20 through cable CB, and obtains transmittance signal or the signal for representing the transmittance from the laser L exporting 24 outputs, to export the transmittance inputted signal to controller 13.
Luminous module 11 is controlled by controller 13, so that laser L is irradiated on gas X to be measured to be penetrated. More specifically, based on to the detected result of the detected result of the electric current of flowing in the luminous element being arranged in luminous module 11 or the laser L from luminous module 11 transmitting, controller 13 is controlled luminous module 11 so that the intensity constant of laser L, and performs control to inswept specific wavelength district. In addition, controller 13 performs the drived control of sub-display D2 based on the transmittance signal from input 12, and the transmittance making the laser L indicated by transmittance signal is displayed on sub-display D2.
Optical Receivers 21 comprises the light receiving element of such as photorectifier etc., and the light receiving signal obtained by receiving laser L is received by it, to export the light receiving signal got to computing controller 22. Computing controller 22 utilizes the absorption spectrum of the laser L that the light receiving signal from Optical Receivers 21 determines to have used, and the composition being included in gas X to be measured and concentration thereof, the transmittance of laser L, the temperature etc. of gas X to be measured is measured based on described absorption spectrum. In addition, computing controller 22 performs the drived control of base display unit D1, and multiple measuring result of gas X to be measured or the composition being included in gas X to be measured and concentration thereof, the transmittance of laser L, the temperature etc. of gas X to be measured are displayed on base display unit D1.
In addition, computing controller 22 is to the threshold value stored in storer 23 and utilizes the transmittance of the laser L obtained from the light receiving signal of Optical Receivers 21 to compare, and when the transmittance of laser L is no more than threshold value and when the transmittance of laser L exceedes threshold value so that measuring result is displayed on base display unit D1 according to different mode. Such as, when the transmittance of laser L is no more than threshold value, the whole display space of base display unit D1 is set to normal display, thus make letter be shown as white on a dark background, and when the transmittance of laser L exceedes threshold value, the half (such as, half below) of the display space of base display unit D1 is set to contrary display, thus makes letter be shown as black in white background. This kind of display makes the workman performing the optical axis adjustment of optical receiver 20 can easily grasp the adjustment degree of optical axis.
When the transmittance of laser L is no more than threshold value and when the transmittance of laser L exceedes threshold value, computing controller 22 makes the transmittance of laser L or a part for measuring result also be displayed on sub-display D2 according to different mode.Such as, make when the transmittance of laser L is no more than threshold value measuring result to be displayed in the way of flickering display on sub-display D2, and make when the transmittance of laser L exceedes threshold value measuring result be displayed on sub-display D2 in the way of luminescence display or normal display. Workman for the optical axis adjustment performing light emission device 10 performs this kind of display, easily to grasp the adjustment degree of optical axis.
In addition, when the transmittance of laser L exceedes threshold value and when the transmittance of laser L is no more than threshold value, computing controller 22 makes to export different signals from output terminal 25. Such as, when the transmittance of laser L is no more than threshold value, export the signal of the rather low-frequency rate audio-band from output terminal 25, and when the transmittance of laser L exceedes threshold value, export the signal of the relative high frequency rate audio-band from output terminal 25. This kind can be performed for workman to export, so that described workman grasps the adjustment degree of optical axis by the sense of hearing when such as output terminal 25 is connected to loud speaker.
Storer 23 is the nonvolatile memory such as dodging speed ROM (or read-only storage), EEPROM (or electrically erasable ROM) etc., stored therein the above-mentioned threshold value used when optical axis adjusts. Here, described threshold value can be set to arbitrary value. Such as, when meeting the needs of the determined rough transmittance of threshold value, the value of approximately " 50% " is set, such as, when being necessary to utilize threshold value the adjustment of high precision optical axis to be checked, such as, the value of approximately " 90% " is set. In addition, can be described threshold value and single value is set, or can be threshold value multiple value is set. When arranging multiple value, when exceeding the threshold value of correspondence, it is desirable to change the display of base display unit D1 and sub-display D2, or change the signal exported from output terminal 25 every time.
Output 24 is connected to the input 12 of light emission device 10 through cable CB, and it exports the transmittance signal of the laser L transmittance determined in computing controller 22 for representing. It is emitted to light emission device 10 through cable CB and not affected by noise as this transmittance signal of numerary signal. Output terminal 25 is the terminal such as meeting explosion-proof criteria, and it is set to export in outside or launch the measuring result of computing controller 22. This output terminal 25 also above-mentioned signal for exporting in audio-band.
Here, the reason that the base display unit D1 that can show multiple measuring result is arranged in optical receiver 20 is the impact for reducing noise and raising signal processing efficiency. In other words, base display unit D1 is arranged in the optical receiver 20 being provided with computing controller 22, thus eliminate such as the needs that the signal being superimposed with noise on it is calculated in the prior art, to improve signal processing efficiency, in addition, by guaranteeing that noise is not superimposed upon on light receiving signal to reduce the impact of noise as far as possible.
In addition, the reason being arranged in light emission device 10 by the sub-display D2 transmittance of laser L shown in the part of measuring result or base display unit D1 shown is the optical axis adjustment making workman oneself can effectively perform light emission device 10. The optical axis adjustment of laser gas analysis device 1 is controlled by the adjustment of the optical axis of light emission device 10. In other words, unless performed the optical axis adjustment of light emission device 10 to a certain extent, otherwise the adjustment of the optical axis of optical receiver 20 becomes without meaning. Like this, in order to oneself effectively perform to be adjusted by the optical axis of controlled light emission device 10, sub-display D2 is arranged in optical receiver 10.
Describe the method adjusted by the optical axis of laser gas analysis device 1 in above-mentioned configuration. Fig. 6 is the schema of the optical axis adjustment programme illustrating laser gas analysis device 1 according to one embodiment of present invention. When installing laser gas analysis device 1 or when the periodicity of laser gas analysis device 1 or aperiodicity are safeguarded, perform the optical axis adjustment of laser gas analysis device 1 by a workman.
When task starts, first, workman accesses the installation position of light emission device 10, to perform the transmittance with reference to the laser L of display in sub-display D2 to adjust the task (program S11) of the optical axis of light emission device 10. More specifically, perform the task that adjustment screw rod N (see Fig. 2) to the optical axis adjustment mechanism being arranged in light emission device 10 adjusts, thus make the transmittance of laser L maximum what the displaying contents of the base display unit D1 shown in Fig. 3 or the transmittance of laser L are checked simultaneously.
While performing this task, determine whether the transmittance of laser L reaches maximum (program S12) by workman. If workman determines that the transmittance of laser apparatus L is not maximum, or when the determination result of program S11 is "No", the task of the optical axis 10 of adjustment light emission device continues (program S11).
On the other hand, if workman determines that the transmittance of laser L is maximum, or when the determination result of program S12 is "Yes", workman accesses the installation position of optical receiver 20 and performs the transmittance with reference to the laser L of display on base display unit D1 to adjust the task (program S13) of the optical axis of optical receiver 20. More specifically, perform the adjustment screw rod N task of adjusting to the optical axis adjustment mechanism being arranged in optical receiver 20, thus the transmittance of laser L of simultaneously making checked in the transmittance of the laser L of the displaying contents to the sub-display D2 shown in Fig. 4 is maximum.
While performing this task, determine the transmittance of laser L whether maximum (program S14) by workman. If workman determines that the transmittance of laser L is not maximum, or when the determination result of program S14 is "No", the task of the optical axis 20 of adjustment optical receiver continues (program S13).
On the other hand, if the laser-transmitting that workman determines is than maximum, or when the determination result of program S14 is "Yes", workman accesses the installation position of light emission device 10 again, to perform the transmittance with reference to the laser L of display in sub-display D2 to adjust the task (program S15) of the optical axis of light emission device 10. While performing this task, determine the transmittance of laser L whether maximum (program S16) by workman. If workman determines that the transmittance of laser L is not maximum, or when the determination result of program S16 is "Yes", a series of tasks shown in Fig. 6 complete.
As mentioned above, according to current embodiment, the optical receiver 20 of laser gas analysis device 1 arranges base display unit D1, the measuring result of its display by the laser L penetrating gas X to be measured is received and obtain, and arranging sub-display D2 in the light emission device 10 of laser gas analysis device 1, a part for the measuring result of display on base display unit D1 is shown by it. Therefore, workman can refer to the displaying contents of the sub-display D2 being arranged in light emission device 10, oneself effectively perform the optical axis adjustment of light emission device 10, and with reference to the displaying contents of the base display unit D1 being arranged in optical receiver 20, oneself can effectively perform optical axis adjustment.
Here, in the computing controller 22 of laser gas analysis device 1, in order to improve S/N or signal to noise ratio, perform a kind of process, with in the specified time cycle or the such as about several seconds absorption spectrums to the laser L in tens seconds be averaged, and based on the absorption spectrum after being averaged, the composition being included in gas X to be measured and concentration thereof etc. are measured.Therefore, for each in above-mentioned specified time cycle of computing controller 22 or computation period, the displaying contents of base display unit D1 and sub-display D2 is upgraded. The computation period of computing controller 22 changes according to gas X to be measured and measurement environment, thus the time cycle (or replacement cycle) upgraded by the displaying contents of base display unit D1 and sub-display D2 also changes.
When the measuring result shown on such as base display unit D1 or sub-display D2 or transmittance change, it is seen that dawn has reached the fact of replacement cycle; But, unless measuring result changes, otherwise the fact having reached the replacement cycle can not be known. Such as, performing the intense adjustment of optical axis or performing the optical axis final inspection that whether completes of adjustment while drawing stable transmittance, the situation that the measuring result that base display unit D1 or sub-display D2 shows often does not change often to occur. Therefore, the above-mentioned replacement cycle can be reported to workman.
Fig. 7 A and Fig. 7 B is the diagram of the illustrative report illustrating the replacement cycle in sub-display according to one embodiment of present invention. Fig. 7 A is identical with the sub-display D2 shown in sub-display D2 and the Fig. 4 shown in Fig. 7 B, and it is such as 7 sections of LED indicating meters. In the example shown in Fig. 7 A and Fig. 7 B, it is shown that the transmittance " 92.0 " of laser. In the sub-display D2 of transmittance demonstrating laser, do not use the radix point PT1 on the right. Therefore, based on such as from the signal of computing controller 22, for each replacement cycle alternately perform to make radix point PT open (see Fig. 7 A) display and make radix point PT close (see Fig. 7 B) display or therebetween switching display, this can not increase cost to the workers report replacement cycle.
Fig. 8 A and Fig. 8 B is the diagram of the illustrative report of the replacement cycle illustrated in base display unit according to one embodiment of present invention. Fig. 8 A is identical with the base display unit D1 shown in base display unit D1 and the Fig. 3 shown in Fig. 8 B, and it is such as liquid-crystal display. In the example shown in Fig. 8 A and Fig. 8 B, by " 20.50% " concentration " O as gas X to be measured2" display, and " 98.3% " transmittance " Trans " as laser is shown. In addition, by " 17:52 " as Measuring Time " Measuring " display, and " IP:192.168.1.10 " is shown as the IP address of laser gas analysis device 1. In addition, in the example shown in Fig. 8 A, the 3rd row L3 or a line after the first row L1 and the 2nd row L2 show " 101.33kPa " as the measuring result of pressure " PresAI1 ", the first row L1 shows the concentration " O of gas X to be measured2", the 2nd row L2 shows the transmittance " Trans " of laser, and in the example shown in Fig. 8 B, the 3rd row L3 shows " 25.6 DEG C " as the temperature results " TempAI2 " measured.
In the base display unit D1 that can carry out above-mentioned display, except the transmittance " Trans " of laser, show multiple measuring results etc. Therefore, the Alternation Display of the measuring result except can carrying out the transmittance except laser " Trans " for each replacement cycle or switching display, will be reported to workman and do not increase cost the replacement cycle. Such as, for each replacement cycle, carry out alternately switching between the display (or show measure for representing pressure result " PresAI1 ") and the display (or showing the temperature results " TempAI2 " measured for representing) of the 3rd row L3 shown in Fig. 7 B of the 3rd row L3 shown in Fig. 7 A.Even if the value of the transmittance on the value of the concentration on the first row L1 and the 2nd row L2 does not change, it is possible to carry out this kind of display so that workman knows the replacement cycle according to the change of the display on the 3rd row L3.
Fig. 9 is the diagram of another illustrative report of the replacement cycle illustrated in sub-display according to one embodiment of present invention. In example in fig .9, when luminous element Q1 (such as LED element etc.) is arranged near sub-display D2, perform the operation that switching is luminous, with the closedown of the unlatching and luminous element Q1 that alternately perform luminous element Q1 based on the signal from computing controller 22 for each replacement cycle. In the example depicted in fig. 9, although needing to provide luminous element Q1, but the replacement cycle can be reported to workman and do not significantly improve cost.
Figure 10 is the diagram of another illustrative report of the replacement cycle illustrated in base display unit according to one embodiment of present invention. In the example depicted in fig. 10, the luminous element Q11-Q13 arranged in for base display unit D1 arranges luminous element Q14, perform the operation that switching is luminous, alternately to perform the unlatching of luminous element Q14 and the closedown of luminous element Q14 for each replacement cycle based on the signal from computing controller 22 in the way of identical with the example shown in Fig. 9. Being arranged on the luminous element Q11-Q13 near base display unit D1 is the luminous element (such as LED etc.) being set to indicate the state of laser gas analysis device 1. Such as, luminous element Q11 refers to the orange luminescence element of report (DO) of warning, luminous element Q12 is the red light-emitting component of instruction mistake (FAULT), and luminous element Q13 is the green luminousing element of instruction opening power (POWER). Although needing to be arranged in the example shown in Figure 10 luminous element Q14 according to the mode identical with Fig. 9, but the replacement cycle can being reported to workman and be not significantly increased cost.
Replacement cycle can will be reported to workman according to the method utilizing Fig. 7-Figure 10 to illustrate, so that workman is by checking and accurately execute the task the replacement cycle reported, and not need to be grasped the replacement cycle that corresponding laser gas analysis device 1 changes. Like this, task efficiency and the precision of the adjustment of the optical axis in laser gas analysis device 1 can be improved.
Although described above is display according to one embodiment of present invention, but the invention is not restricted to above-described embodiment, and can change within the scope of the invention freely. Such as, although whether the displaying contents of base display unit D1 and sub-display 2 exceedes in storer 23, according to the transmittance of laser L, the threshold value stored and changes in the above-described embodiments, but how the transmittance of laser L can be changed and analyze, to utilize arrow to demonstrate the direction of optical axis adjustment.
In addition, in the above-described embodiments, describing such example, the displaying contents of reference sub-display D2 performs the optical axis adjustment of the optical axis adjustment of light emission device 10 and the displaying contents execution optical receiver 20 based on base display unit D1 wherein. But, loud speaker can be connected to the output terminal 25 shown in Fig. 5, and can refer to the sound sent from loud speaker to perform the optical axis adjustment of light emission device 10 and optical receiver 20. In addition, the signal for the computation period or replacement cycle representing computing controller 22 can be exported from output terminal 25, and the acoustic notifications replacement cycle by sending from loud speaker.
In addition, in the above-described embodiments, describing a kind of configuration, it makes computing controller 22 and base display unit D1 be arranged in optical receiver 20 and sub-display D2 is arranged in optical receiver 10. But, contrary with it, computing controller 22 and base display unit D1 can be arranged in light emission device 10, and sub-display D2 can be arranged in optical receiver 20. By this kind of configuration, it is necessary to the light receiving signal obtained in the Optical Receivers 21 of optical receiver 20 is passed to light emission device 10, thus cause the demand that prevents noise to be mixed in light receiving signal.
In addition, describing such example in the above-described embodiments, it switches display in the upper execution of base display unit D1 and sub-display D2 (see Fig. 7 and Fig. 8) and performs the switching luminescence of luminous element Q1 and Q14. But, display format and the light-emitting mode of luminous element Q1 and Q14 on base display unit D1 and sub-display D2 are arbitrary. Such as, can performing such display format, it makes only to demonstrate the display of transmittance on base display unit D1 and sub-display D2 instantaneously when arriving the replacement cycle, then again show.
Although it is described above and show the preferred embodiments of the present invention, it should be understood that these are the examples of the present invention, and are not regarded as restriction. Without departing from the scope of the invention, it is possible to make increase, omission, replace and other amendment. Therefore, the present invention should not be regarded as being subject to restriction described above, and the restriction of its scope being only subject to claims.
Claims (10)
1. a laser gas analysis device, comprising:
Light emission device, the laser being irradiated on gas to be measured is launched by it;
Optical receiver, the laser penetrating gas to be measured is received by it;
Multiple optical axis adjustment mechanism, one of them is arranged in described light emission device, and wherein another is arranged in described optical receiver;
Base display unit, it is arranged in one of described light emission device and described optical receiver, and shows the measuring result penetrating the laser of gas to be measured and obtain by receiving thereon; And
Sub-display, it is arranged in another in described light emission device and described optical receiver, and a part for measuring result shown on described base display unit is shown thereon.
2. laser gas analysis device according to claim 1, wherein, described base display unit shows the information of the transmittance for the concentration and laser representing gas to be measured at least thereon, and
The display of described sub-display is for representing the part of information as described measuring result for the transmittance of laser.
3. laser gas analysis device according to claim 1, also comprises:
Calculating device, it is arranged in one of described light emission device and optical receiver, and the light receiving signal utilizing the laser penetrating gas to be measured by receiving and obtaining calculates described measuring result.
4. laser gas analysis device according to claim 3, wherein
Described base display unit and described calculating device are arranged in described optical receiver, and
Described sub-display is arranged in described light emission device.
5. laser gas analysis device according to claim 1, also comprising the storer storing laser-transmitting than threshold value, wherein said base display unit and described sub-display are when the transmittance of laser is no more than described threshold value and show the part of described measuring result and described measuring result when the transmittance of laser exceedes described threshold value in different modalities.
6. laser gas analysis device according to claim 5, also comprises output terminal, and it exports different signals in outside, different when described signal exceedes described threshold value when the transmittance of laser is no more than described threshold value with the transmittance of laser.
7. laser gas analysis device according to claim 3, wherein, at least one in described base display unit and sub-display changes displaying contents at least partially for each computation period of described calculating device.
8. laser gas analysis device according to claim 3, wherein, is included in for the luminous element of each computation period luminescence of described calculating device at least one of described light emission device and optical receiver.
9. a laser gas analysis device, comprising:
Light emission device, the laser being irradiated on gas to be measured is launched by it;
Optical receiver, the laser penetrating gas to be measured is received by it;
Multiple optical axis adjustment mechanism, one of them is arranged in described light emission device, and wherein another is arranged in described optical receiver;
Base display unit, it is arranged in described optical receiver, and shows the measuring result penetrating the laser of gas to be measured and obtain by receiving thereon;
Sub-display, it is arranged in described light emission device, and a part for measuring result shown on described base display unit is shown thereon;
Calculating device, it is arranged in described optical receiver, and the light receiving signal utilizing the laser penetrating gas to be measured by receiving and obtaining described measuring result to be performed calculating, and the measuring result calculated comprises the transmittance of laser; And
Storer, it stores the threshold value of the transmittance of laser, wherein
The transmittance of the threshold value stored in described storer with the laser utilizing light receiving signal to obtain is compared by described calculating device, determine whether the transmittance of laser exceedes the threshold value stored, and when the transmittance of laser is no more than the threshold value stored, measuring result is made to be displayed on described base display unit in the first pattern, and when the transmittance of laser exceedes the threshold value stored, measuring result is displayed on described base display unit in a second mode, and described first pattern and described two modes are different from each other.
10. laser gas analysis device according to claim 9, wherein
When the transmittance of laser is no more than the threshold value stored, described calculating device also makes measuring result be displayed on described sub-display in a third mode, and when the transmittance of laser exceedes the threshold value stored, described calculating device makes measuring result be displayed on described sub-display with four-mode, and
Described 3rd pattern and described four-mode are different from each other.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
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| JP2014-243132 | 2014-12-01 | ||
| JP2014243132 | 2014-12-01 | ||
| JP2015-139847 | 2015-07-13 | ||
| JP2015139847A JP6142900B2 (en) | 2014-12-01 | 2015-07-13 | Laser gas analyzer |
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| Publication Number | Publication Date |
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| CN105651741A true CN105651741A (en) | 2016-06-08 |
| CN105651741B CN105651741B (en) | 2018-10-26 |
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| CN201510665721.9A Active CN105651741B (en) | 2014-12-01 | 2015-10-15 | Laser gas analysis device |
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| JP (1) | JP6142900B2 (en) |
| CN (1) | CN105651741B (en) |
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| CN106053310A (en) * | 2016-08-11 | 2016-10-26 | 北京大方科技有限责任公司 | Dust detection apparatus with foldable calibration mechanism |
| CN110346325A (en) * | 2018-04-06 | 2019-10-18 | 横河电机株式会社 | Gas analyzing apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105651741B (en) | 2018-10-26 |
| JP2016109662A (en) | 2016-06-20 |
| JP6142900B2 (en) | 2017-06-07 |
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