CN108168771B - Pressure monitoring device of nitrogen-oxygen analyzer - Google Patents
Pressure monitoring device of nitrogen-oxygen analyzer Download PDFInfo
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- CN108168771B CN108168771B CN201810167865.5A CN201810167865A CN108168771B CN 108168771 B CN108168771 B CN 108168771B CN 201810167865 A CN201810167865 A CN 201810167865A CN 108168771 B CN108168771 B CN 108168771B
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- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000012806 monitoring device Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims 9
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a pressure monitoring device of a nitrogen-oxygen analyzer, which comprises the nitrogen-oxygen analyzer with a gas system and an electrical system, and further comprises a first control module, a second control module and a digital-analog input-output module, wherein the input end of the digital-analog input-output module is connected with a pressure sensor for detecting the pressure in the gas system in real time, and the first control module is used for transmitting a normal air pressure signal and a stop working signal to the electrical system through the digital-analog input-output module and the second control module so as to control the nitrogen-oxygen analyzer to work. The invention can effectively improve the measurement accuracy of the oxygen-nitrogen analyzer and reduce the maintenance rate of the oxygen-nitrogen analyzer.
Description
Technical Field
The invention relates to the technical field of nitrogen and oxygen analysis, in particular to a pressure monitoring device of a nitrogen and oxygen analyzer.
Background
In the field of process tests, an oxygen-nitrogen analyzer can decompose a sample by pulse heating under inert atmosphere, namely, the sample is decomposed in a graphite crucible of a high-power pulse furnace by heating to more than 3000 ℃, the pulse furnace is cooled by circulating cooling water, and then the contents of oxygen and nitrogen in various steel, nonferrous metals and novel materials are respectively measured by an infrared detector and a thermal conductivity detector. The instrument has the advantages of high sensitivity, good performance, wide measurement range and the like, but in practical application, the system gas pressure is greatly fluctuated and unstable, the accuracy of measurement data is greatly influenced, and the equipment maintenance rate is high.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a nitrogen-oxygen analyzer pressure monitoring device which can effectively improve the measurement accuracy of an oxygen-nitrogen analyzer and reduce the maintenance rate of the oxygen-nitrogen analyzer.
The technical scheme of the invention is as follows: the pressure monitoring device of the nitrogen-oxygen analyzer comprises a nitrogen-oxygen analyzer with a gas system and an electrical system, and further comprises a first control module, a second control module and a digital-analog input-output module, wherein the input end of the digital-analog input-output module is connected with a pressure sensor for detecting the pressure in the gas system in real time, and the first control module is used for transmitting a normal air pressure signal and a stop working signal to the electrical system through the digital-analog input-output module and the second control module so as to control the nitrogen-oxygen analyzer to work; when the pressure in the gas system is in a preset normal pressure range, the digital-analog input/output module sends a pressure normal signal to the electrical system for enabling the nitrogen-oxygen analyzer to perform detection work; and when the pressure in the gas system is not in the preset normal pressure range, the digital-analog input/output module sends a stop signal to the electrical system for stopping the operation of the nitrogen-oxygen analyzer.
The operation panel is connected with the digital-analog input-output module, the operation panel is provided with an indicator lamp module and a button module, the indicator lamp module comprises a power lamp, a gas pressure lamp, a high gas pressure lamp, a low gas pressure lamp, a gas pressure normal lamp and a stop working lamp, and the button module comprises a power-on button and a power-off button.
Further, the second control module comprises a power supply, a fuse, a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay; the power-on button and the normally open contact of the first relay are connected in parallel to form a self-protection circuit, the power-off button and the main coil of the first relay are connected in series to form a power-on circuit, the normally open contact of the second relay and the air pressure lamp are connected in series to form a first branch, the normally open contact of the third relay and the high air pressure lamp are connected in series to form a second branch, the normally open contact of the fourth relay and the low air pressure lamp are connected in series to form a third branch, the normally open contact of the fifth relay and the normal air pressure lamp are connected in series to form a fourth branch, the normally open contact of the sixth relay and the stop lamp are connected in series to form a fifth branch, and the power-on circuit, the power lamp, the first branch, the second branch, the third branch, the fourth branch and the fifth branch are connected in parallel and then connected with the self-protection circuit in series between two poles of the power supply; and the No. 1 output end, the No. 2 output end, the No. 3 output end, the No. 4 output end and the No. 5 output end of the digital-analog input output module are respectively connected with the power supply negative electrode through the second relay main coil, the third relay main coil, the fourth relay main coil, the fifth relay main coil and the sixth relay main coil.
Furthermore, the No. 0 input end of the digital-analog input-output module is connected with the positive electrode of the power supply through the power-off button and the power-on button.
Further, the first control module is a PLC controller, and the digital-analog input/output module comprises a digital quantity module and an analog quantity module which are connected with the PLC controller.
Further, the power-on button is a normally open switch, and the power-off button is a normally closed switch.
Further, the power supply is a direct current power supply, and the fuse is connected to the input end of the power supply.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
1. the first control module sends a control signal to the electrical system through the digital-analog input-output module and the second control module according to the pressure in the gas system so as to control the nitrogen-oxygen analyzer to perform detection work or stop work, so that the measurement accuracy of the oxygen-nitrogen analyzer can be effectively improved, and the maintenance rate of the oxygen-nitrogen analyzer can be reduced;
2. the setting of the indicator lamp module can display the state of the pressure in the gas system and the working state of the nitrogen-oxygen analyzer in real time, and the fault analysis of the nitrogen-oxygen analyzer and the maintenance of the nitrogen-oxygen analyzer are facilitated according to the display states of the air pressure lamp, the high air pressure lamp and the low air pressure lamp;
3. the first control module adopts a PLC controller, the digital-analog input-output module adopts a digital quantity module and an analog quantity module, and the control precision is high and the stability is good.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram showing the connection between the digital-analog input/output module and the nitrogen-oxygen analyzer in the present invention;
FIG. 3 is a schematic structural view of an operation panel according to the present invention;
FIG. 4 is a circuit diagram of a second control module according to the present invention;
FIG. 5 is a schematic diagram illustrating the connection between the first control module and the digital-to-analog input/output module according to the present invention;
FIG. 6 is a ladder diagram of a first control module according to the present invention.
Wherein: 1-gas system, 2-electrical system, 3-nitrogen oxygen analyzer, 4-first control module, 5-second control module, 6-D/A input/output module, 7-pressure sensor, 8-operation panel, 9-indicator module, 10-button module, 11-self-protection circuit, 12-power-on circuit, 13-first branch, 14-second branch, 15-third branch, 16-fourth branch, 17-fifth branch, 18-digital module, 19-analog module, HL 1-power source lamp, HL 2-air pressure lamp, HL 3-high-pressure lamp, and the LED lamp comprises an HL 4-low-pressure lamp, an HL 5-normal-pressure lamp, an HL 6-stop working lamp, an SB 1-power-on button, an SB 2-power-off button, a DC-power supply, an FU-fuse, a KA 1-first relay, a KA 2-second relay, a KA 3-third relay, a KA 4-fourth relay, a KA 5-fifth relay, a KA 6-sixth relay, a Q0.1-1 output end, a Q0.2-2 output end, a Q0.3-3 output end, a Q0.4-4 output end, a Q0.5-5 output end and an I0.0-0 input end.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 1-6, a pressure monitoring device of a nitrogen-oxygen analyzer comprises a nitrogen-oxygen analyzer 3 with a gas system 1 and an electric system 2, and further comprises a first control module 4, a second control module 5 and a digital-analog input-output module 6, wherein the input end of the digital-analog input-output module 6 is connected with a pressure sensor 7 for detecting the pressure in the gas system 1 in real time, and the first control module 4 is used for transmitting a normal air pressure signal and a stop working signal to the electric system 2 through the digital-analog input-output module 6 and the second control module 5 so as to control the nitrogen-oxygen analyzer 3 to work; when the pressure in the gas system 1 is in a preset normal pressure range, the digital-analog input-output module sends a normal pressure signal to the electric system 2 for enabling the nitrogen-oxygen analyzer 3 to perform detection work so as to ensure that the detection values of the oxygen and nitrogen content are closest to the real content value; when the pressure in the gas system 1 is not in the preset normal pressure range, the digital-analog input output module 6 sends a stop signal to the electrical system 2 for stopping the operation of the nitrogen-oxygen analyzer 3, so that the nitrogen-oxygen analyzer 3 is prevented from being damaged due to abnormal gas pressure, and the first control module 4 sends a control signal to the electrical system 2 through the digital-analog input output module 6 and the second control module 5 according to the pressure in the gas system 1 to control the nitrogen-oxygen analyzer 3 to perform detection operation or stop operation, so that the measurement accuracy of the oxygen-nitrogen analyzer 3 can be effectively improved, and the maintenance rate of the oxygen-nitrogen analyzer 3 can be reduced.
In the embodiment, the device further comprises an operation panel 8 connected with the digital-analog input/output module 6, an indicator light module 9 and a button module 10 are arranged on the operation panel 8, the indicator light module 9 comprises a power lamp HL1, a gas pressure lamp HL2, a high gas pressure lamp HL3, a low gas pressure lamp HL4, a gas pressure normal lamp HL5 and a stop working lamp HL6, and the button module 10 comprises a power-on button SB1 and a power-off button SB2; the second control module 5 comprises a power supply DC, a fuse FU, a first relay KA1, a second relay KA2, a third relay KA3, a fourth relay KA4, a fifth relay KA5 and a sixth relay KA6; the power-on button SB1 and the normally open contact of the first relay KA1 are connected in parallel to form a self-protection circuit 11, the power-off button SB2 and the main coil of the first relay KA1 are connected in series to form a power-on circuit 12, the normally open contact of the second relay KA2 and the air pressure lamp HL2 are connected in series to form a first branch 13, the normally open contact of the third relay KA3 and the high air pressure lamp HL3 are connected in series to form a second branch 14, the normally open contact of the fourth relay KA4 and the low air pressure lamp HL4 are connected in series to form a third branch 15, the normally open contact of the fifth relay KA5 and the air pressure normal lamp HL5 are connected in series to form a fourth branch 16, the normally open contact of the sixth relay KA6 and the stop lamp HL6 are connected in series to form a fifth branch 17, and the power-on circuit 12, the power lamp HL1, the first branch 13, the second branch 14, the third branch 15, the fourth branch 16 and the fifth branch 17 are connected in parallel to the two poles of the self-protection circuit 11 together in series and are connected between the power sources DC; the output end Q0.1, the output end Q0.2, the output end Q0.3, the output end Q0.4 and the output end Q0.5 of the digital-analog input output module 6 are respectively connected with the negative electrode of the power supply DC through the main coil of the second relay KA2, the main coil of the third relay KA3, the main coil of the fourth relay KA4, the main coil of the fifth relay KA5 and the main coil of the sixth relay KA6, the state of the pressure in the gas system 1 and the working state of the nitrogen-oxygen analyzer 3 can be displayed in real time by the setting indicator lamp module 9, and the fault analysis of the nitrogen-oxygen analyzer 3 and the maintenance of the nitrogen-oxygen analyzer 3 can be conveniently carried out according to the display states of the gas pressure lamp HL2, the high-pressure lamp HL3 and the low-pressure lamp HL 4.
The fifth relay KA5 is further used for transmitting an air pressure normal signal to the electrical system 2, and the sixth relay KA6 is further used for transmitting a stop signal to the electrical system 2.
In this embodiment, the input end I0.0 of the digital-analog input/output module 6 is connected to the positive pole of the power supply DC through the power-off button SB2 and the power-on button SB1, and is used for detecting the power-on state of the second control module 5, and if the second control module 5 is not powered on, the nitrogen-oxygen analyzer 3 stops working, so as to play a role in safety protection; the first control module 4 is a PLC controller, the digital-analog input/output module 6 comprises a digital quantity module 18 and an analog quantity module 19,1, which are connected with the PLC controller, wherein the digital quantity module 18, the analog quantity module 19,1 are respectively provided with a number Q0.1, a number 2 output Q0.2, a number 3 output Q0.3, a number 4 output Q0.4, a number 5 output Q0.5 and a number 0 input I0.0, which are respectively positioned on the digital quantity module 18, the two output ends of the pressure sensor 7 are respectively connected with a B+ end and a B-end of the analog quantity module 19, wherein the B+ end and the Rb end of the analog quantity module 19 are in short circuit, preferably, the model of the PLC controller is S7-200, the first control module 4 adopts the PLC controller, and the digital quantity module 18 and the analog quantity module 19 of the digital-analog quantity module 6 are respectively provided with high control precision and good stability.
In this embodiment, the power-on button SB1 is a normally open switch, the power-off button SB2 is a normally closed switch, the power source DC is a direct current power source, preferably, the power source DC is a 24 volt direct current power source, and the fuse FU is connected to the input end of the power source DC, so that the second control module 5 can be effectively prevented from being damaged due to overload.
In fig. 6, I0.0 is the number 0 input terminal of the digital quantity module 18, SM0.0 is the system input point inside the PLC controller, VD1 is the actual pressure value, VD2 is the pressure upper limit value, VD3 is the pressure lower limit value, VD4 is the pressure reference value, VD5 is the pressure highest allowable value, VD6 is the pressure lowest allowable value, T31 is the delay timer, and Q0.1 to Q0.5 are the number 1 to 5 output terminals of the digital quantity module 18.
Line 1: when the power-ON button SB1 is pressed, the I0.0 is ON, the SM0.0 is ON after the PLC controller is powered ON, the No. 1 output end Q0.1 is ON, when the actual pressure value VD1 is larger than the lower pressure limit value VD3 and smaller than the upper pressure limit value VD2, the program flow is conducted, the delay timer T31 is powered ON, and after 10 x 100 ms=1000 ms=1 s, the normally open point inside the T31 is closed.
Line 2: when the actual pressure value VD1 is greater than the reference pressure value VD4, the program flow is conducted, the output end Q0.1 of the number 1 is ON, the second relay KA2 is electrically powered to be powered ON, and the air pressure lamp HL2 is turned ON.
Line 3: when the actual pressure VD1 is greater than the maximum pressure allowable VD5, the program flow is turned ON, the output end Q0.2 is ON, the third relay KA3 is powered ON, and the high-pressure lamp HL3 is turned ON.
Line 4: when the actual pressure VD1 is smaller than the minimum pressure allowable VD6, the program flow is conducted, the output end Q0.3 is ON, the fourth relay KA4 is powered ON, and the low-pressure lamp HL4 is turned ON.
Line 5: when the delay timer T31 is powered ON and kept, the program flow is conducted, the output end Q0.4 of the No. 4 is ON, the fifth relay KA5 is powered ON, the nitrogen-oxygen analyzer 3 detects, and the air pressure normal lamp HL5 is lighted.
Lines 6-7: when the output end Q0.2 (with higher air pressure) or the output end Q0.3 (with lower air pressure) is ON, the program flow is conducted, the output end Q0.5 is ON, the sixth relay KA6 is electrified and closed, the nitrogen-oxygen analyzer 3 stops working and the signal lamp HL6 is lighted.
While only the preferred embodiments of the present invention have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. A nitrogen-oxygen analyzer pressure monitoring device, comprising a nitrogen-oxygen analyzer (3) with a gas system (1) and an electrical system (2), characterized in that: the nitrogen and oxygen analyzer comprises a gas system (1), and is characterized by further comprising a first control module (4), a second control module (5) and a digital-analog input and output module (6), wherein the input end of the digital-analog input and output module (6) is connected with a pressure sensor (7) for detecting the pressure in the gas system (1) in real time, and the first control module (4) is used for transmitting a normal gas pressure signal and a stop working signal to the electrical system (2) through the digital-analog input and output module (6) and the second control module (5) so as to control the nitrogen and oxygen analyzer (3) to work; when the pressure in the gas system (1) is in a preset normal pressure range, the digital-analog input output module (6) sends a normal pressure signal to the electrical system (2) for enabling the nitrogen-oxygen analyzer (3) to perform detection work; when the pressure in the gas system (1) is not in a preset normal pressure range, the digital-analog input output module (6) sends a stop signal to the electrical system (2) for stopping the operation of the nitrogen-oxygen analyzer (3);
the digital-analog power supply system is characterized by further comprising an operation panel (8) connected with the digital-analog input and output module (6), wherein an indication lamp module (9) and a button module (10) are arranged on the operation panel (8), the indication lamp module (9) comprises a power lamp (HL 1), a gas pressure lamp (HL 2), a high-pressure lamp (HL 3), a low-pressure lamp (HL 4), a gas pressure normal lamp (HL 5) and a stop lamp (HL 6), and the button module (10) comprises a power-on button (SB 1) and a power-off button (SB 2);
the second control module (5) comprises a power supply (DC), a Fuse (FU), a first relay (KA 1), a second relay (KA 2), a third relay (KA 3), a fourth relay (KA 4), a fifth relay (KA 5) and a sixth relay (KA 6); the power-on button (SB 1) and the normally open contact of the first relay (KA 1) are connected in parallel to form a self-protection circuit (11), the power-off button (SB 2) and the main coil of the first relay (KA 1) are connected in series to form a power-on circuit (12), the normally open contact of the second relay (KA 2) and the air pressure lamp (HL 2) are connected in series to form a first branch (13), the normally open contact of the third relay (KA 3) and the high air pressure lamp (HL 3) are connected in series to form a second branch (14), the normally open contact of the fourth relay (KA 4) and the low air pressure lamp (HL 4) are connected in series to form a third branch (15), the normally open contact of the fifth relay (KA 5) and the air pressure normal lamp (HL 5) are connected in series to form a fourth branch (16), the normally open contact of the sixth relay (KA 6) and the stop lamp (HL 6) are connected in series to form a fifth branch (17), and the power-on circuit (12), the power source lamp (HL 1), the first self-protection branch (13), the second branch (14), the third branch (15) and the fifth branch (16) are connected in series to form a fifth branch (17) and are connected in parallel to the DC circuit (11); the output end (Q0.1), the output end (Q0.2), the output end (Q0.3), the output end (Q0.4) and the output end (Q0.5) of the digital-analog input output module (6) are respectively connected with the negative electrode of the power supply (DC) through the main coils of the second relay (KA 2), the main coils of the third relay (KA 3), the main coils of the fourth relay (KA 4), the main coils of the fifth relay (KA 5) and the main coils of the sixth relay (KA 6);
and a No. 0 input end (I0.0) of the digital-analog input-output module (6) is connected with the positive electrode of the power supply (DC) through the power-off button (SB 2) and the power-on button (SB 1).
2. The nitrogen oxide analyzer pressure monitoring device of claim 1, wherein: the first control module (4) is a PLC controller, and the digital-analog input/output module (6) comprises a digital quantity module (18) and an analog quantity module (19) which are connected with the PLC controller.
3. The nitrogen oxide analyzer pressure monitoring device of claim 1, wherein: the power-on button (SB 1) is a normally open switch, and the power-off button (SB 2) is a normally closed switch.
4. The nitrogen oxide analyzer pressure monitoring device of claim 1, wherein: the power supply (DC) is a direct current power supply, and the Fuse (FU) is connected to the input end of the power supply (DC).
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1895285A2 (en) * | 2006-08-31 | 2008-03-05 | HONDA MOTOR CO., Ltd. | In-cylinder pressure detection device and method for internal combustion engine |
| CN201417196Y (en) * | 2009-06-10 | 2010-03-03 | 济宁鲁科检测器材有限公司 | Pressure auto-inspection recorder |
| CN201724778U (en) * | 2010-07-20 | 2011-01-26 | 国药集团国瑞药业有限公司 | Compressed air low-pressure automatic alarm system |
| CN102460149A (en) * | 2009-06-11 | 2012-05-16 | 马奎特紧急护理公司 | On-demand gas regulator for gas analyzer calibration |
| CN202420758U (en) * | 2012-02-15 | 2012-09-05 | 重庆大江工业有限责任公司 | On-line air pressure monitoring alarm for air supply pipeline |
| CN203133554U (en) * | 2012-12-24 | 2013-08-14 | 江苏康尔臭氧有限公司 | Closed loop control system of ozone generator |
| CN203377336U (en) * | 2013-06-04 | 2014-01-01 | 深圳市沃特玛电池有限公司 | Air pressure detection alarm circuit |
| CN104238436A (en) * | 2014-09-12 | 2014-12-24 | 芜湖鼎瀚再制造技术有限公司 | Monitoring circuit of touch screen type plasma spraying system |
| CN204515473U (en) * | 2015-04-18 | 2015-07-29 | 上饶师范学院 | A kind of gas pressure monitoring controller |
| CN205538912U (en) * | 2016-04-11 | 2016-08-31 | 国家电网公司 | Equipment mistake blocking device is prevented to gaseous detection of SF6 |
| CN105927511A (en) * | 2016-06-29 | 2016-09-07 | 广西玉柴机器股份有限公司 | Emergency energy system and method for air compressor |
| CN107168141A (en) * | 2017-07-07 | 2017-09-15 | 西安鼎研科技股份有限公司 | A kind of multichannel, the gas analysis instrument of multicomponent synchro measure and method |
| CN207036665U (en) * | 2017-08-01 | 2018-02-23 | 北京怡孚和融科技有限公司 | A kind of gas detecting system |
| CN207036340U (en) * | 2017-06-02 | 2018-02-23 | 北京鑫广进燃气设备研究所 | Acquisition and analysis instrument |
-
2018
- 2018-02-28 CN CN201810167865.5A patent/CN108168771B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1895285A2 (en) * | 2006-08-31 | 2008-03-05 | HONDA MOTOR CO., Ltd. | In-cylinder pressure detection device and method for internal combustion engine |
| CN201417196Y (en) * | 2009-06-10 | 2010-03-03 | 济宁鲁科检测器材有限公司 | Pressure auto-inspection recorder |
| CN102460149A (en) * | 2009-06-11 | 2012-05-16 | 马奎特紧急护理公司 | On-demand gas regulator for gas analyzer calibration |
| CN201724778U (en) * | 2010-07-20 | 2011-01-26 | 国药集团国瑞药业有限公司 | Compressed air low-pressure automatic alarm system |
| CN202420758U (en) * | 2012-02-15 | 2012-09-05 | 重庆大江工业有限责任公司 | On-line air pressure monitoring alarm for air supply pipeline |
| CN203133554U (en) * | 2012-12-24 | 2013-08-14 | 江苏康尔臭氧有限公司 | Closed loop control system of ozone generator |
| CN203377336U (en) * | 2013-06-04 | 2014-01-01 | 深圳市沃特玛电池有限公司 | Air pressure detection alarm circuit |
| CN104238436A (en) * | 2014-09-12 | 2014-12-24 | 芜湖鼎瀚再制造技术有限公司 | Monitoring circuit of touch screen type plasma spraying system |
| CN204515473U (en) * | 2015-04-18 | 2015-07-29 | 上饶师范学院 | A kind of gas pressure monitoring controller |
| CN205538912U (en) * | 2016-04-11 | 2016-08-31 | 国家电网公司 | Equipment mistake blocking device is prevented to gaseous detection of SF6 |
| CN105927511A (en) * | 2016-06-29 | 2016-09-07 | 广西玉柴机器股份有限公司 | Emergency energy system and method for air compressor |
| CN207036340U (en) * | 2017-06-02 | 2018-02-23 | 北京鑫广进燃气设备研究所 | Acquisition and analysis instrument |
| CN107168141A (en) * | 2017-07-07 | 2017-09-15 | 西安鼎研科技股份有限公司 | A kind of multichannel, the gas analysis instrument of multicomponent synchro measure and method |
| CN207036665U (en) * | 2017-08-01 | 2018-02-23 | 北京怡孚和融科技有限公司 | A kind of gas detecting system |
Non-Patent Citations (1)
| Title |
|---|
| 基于STM32F407与PM1158的焦炉煤气氧含量在线分析仪设计;王梦佳 等;电子器件;第39卷(第02期);459-463 * |
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