CN2641650Y - Portable intelligent air detector - Google Patents
Portable intelligent air detector Download PDFInfo
- Publication number
- CN2641650Y CN2641650Y CN 03270719 CN03270719U CN2641650Y CN 2641650 Y CN2641650 Y CN 2641650Y CN 03270719 CN03270719 CN 03270719 CN 03270719 U CN03270719 U CN 03270719U CN 2641650 Y CN2641650 Y CN 2641650Y
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- sensor
- portable intelligent
- gas detecting
- program memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a portable intelligent gas detector. The detector comprises one or more gas detecting sensor(s), an I/V conversion and enlargement processing circuit connected with each gas detecting sensor, a temperature sensor circuit, a microprocessor with a multi path analog signal input terminal, an external program memory stored with the sensor zero point and the temperature standard curve table data and a liquid crystal display circuit; the gas detecting sensor is connected with the corresponding analog signal input terminal of the microprocessor through the I/V conversion and enlargement processing circuit, and a temperature sensor is connected with the corresponding analog signal input terminal of the microprocessor; the external program memory and the liquid crystal display circuit are connected with the microprocessor, the microprocessor finds the corresponding correction value in the external program memory by utilizing the collected temperature value to automatically record and store the monitoring data in the preset time period. The portable intelligent gas detector has the functions of automatic identifying sensor, data collection, arithmetic processing, digital filtration, dimension conversion, linearity correction, error correction, digital display, limit alarming, long-distance communication, etc.
Description
Technical field
The utility model relates to a kind of gas detecting instrument, particularly relates to a kind ofly detecting that poisonous, harmful gas exists and the gas detecting instrument of danger level.
Background technology
At present, known gas detecting instrument generally adopts mimic channel, and electrochemical sensor is a sensitive element.Change with temperature, time because electrochemical sensor has zero point, clever numerous degree also is subjected to characteristics such as Temperature Influence.So traditional detecting instrument has the instability at zero point, attenuated output signal, thus make shortcomings such as measurement numerical value is inaccurate, measurement result is unreliable.In order to guarantee to use, need the professional to regulate, and because the restriction of technical conditions can only be passed through hardware adjustments.Above characteristics have influenced the application of detecting instrument in the safety and environmental protection field, and along with the development of infotech and management level, people also wish detection information is noted, and are convenient to tracing management.The above-mentioned shortcoming of instrument, domestic also do not have producer and research institution's report to address the above problem.
Summary of the invention
The purpose of this utility model provides a kind of with variation of ambient temperature, automatically the portable intelligent gas detecting instrument at calibration zero point, to overcome traditional detecting instrument, cause inaccurate, the insecure problem of measurement structure of numerical value of measuring because of being subjected to Temperature Influence instability at zero point.
Portable intelligent gas detecting instrument described in the utility model realizes that the key of above-mentioned purpose is: the I/V that this detector comprises one or more gas detection sensor, be connected with described each gas detection sensor changes amplification treatment circuit, temperature sensor circuit, has the microprocessor of multichannel analog signals input end, the external program memory and the liquid crystal display circuit of the typical curve table data of zero point that has described sensor and temperature; Described gas detection sensor is connected with the corresponding input end of analog signal of microprocessor by I/V conversion amplification treatment circuit, and temperature sensor is connected with the corresponding input end of analog signal of described microprocessor; Described external program memory all is connected with microprocessor with liquid crystal display circuit, and the temperature value that the microprocessor utilization is gathered is found out corresponding modified value from external program memory, write down and store the Monitoring Data of setting-up time section automatically.
Aforesaid a kind of portable intelligent gas detecting instrument, described sensor is the three-electrode electro Chemical sensor, different sensors has different address codes.
Aforesaid a kind of portable intelligent gas detecting instrument, described microprocessor adopts the TSS400CFN type.
Aforesaid a kind of portable intelligent gas detecting instrument, described external program memory adopt EEPROM type storer.
Aforesaid a kind of portable intelligent gas detecting instrument, described microprocessor comprises an overload alarm output control terminal.
The utility model is compared with traditional gas detecting instrument, has following advantage and good effect:
1. automatically airborne poisonous, harmful gas is converted to the direct-reading value, writes down and store the Monitoring Data of setting-up time section automatically.
2. adopt programmable logic device (PLD), intelligentized interface circuit, the interface circuit and the parameter of multiple sensors are stored in the logic chip, more during emat sensor, because the center microcontroller of main frame is the normal open electricity condition, with the automatically interface circuit and the parameter of sensors configured, a main frame can be joined multiple sensors.
3. sensor itself can carry microprocessor, when making sensor, technical parameters such as the zero point of this sensor, sensitivity, temperature characterisitic are stored in the microprocessor, and utilize the typical curve of storage, when the initial parameter of sensor changes, microprocessor will automatically be revised, compensate.
4. by combining, adopt Tuch Memory technology, discern tested place automatically, finish inspection function with the recognizer of fixed location.
5. this instrument can be downloaded data remote by wired or wireless mode, the work such as the recovery of generation data, state analysis, instrument calibration and maintenance of finishing the work by PC and management software.
Description of drawings
Fig. 1 is the schematic block circuit diagram of portable intelligent gas detecting instrument described in the utility model;
Fig. 2 is the sensor interface circuitry of portable intelligent gas detecting instrument described in the utility model;
Fig. 3 is the reasonable figure of sensor discharge circuit of portable intelligent gas detecting instrument described in the utility model;
Fig. 4 is the temperature sensor circuit schematic diagram of portable intelligent gas detecting instrument described in the utility model;
Fig. 5 is the microcontroller circuit and the display circuit schematic diagram of portable intelligent gas detecting instrument described in the utility model;
Fig. 6 is the workflow diagram of portable intelligent gas detecting instrument described in the utility model.
Embodiment
The utility model main circuit is partly seen Fig. 1, comprises gas sensor, temperature sensor and interface circuit, microprocessor, memory, multirow liquid crystal display circuit and power circuit.Described sensor and interface circuit are seen Fig. 2, Fig. 3; Used sensor is the three-electrode electro Chemical sensor, and wherein S is a working electrode, and C is to electrode, and R is a contrast electrode.Between the S of sensor and R, keep constant potential, and flow between kinetic current S and the C, the current signal of its output carries out I/V conversion, processing and amplifying through amplifier, and signal AMP1 of output (harmful gas detection signal) or AMP2 (oxygen level detection signal) are sent to single-chip microcomputer TSS400CFN and handle.Wherein different sensors has different ID, and its signal is for single-chip microcomputer TSS400CFN identification, to realize the automatic recognition function of intelligence sensor.
Change with variation of temperature the zero point of temperature sensor, so in circuit, increased the circuit that this parameter of temperature is measured, in advance the zero point of sensor and the typical curve table of temperature are placed in the ROM, so just can overcome the unstable problem at zero point of now general gas detecting instrument.
The core of this instrument is little process chip TSS400 of sensor, and that its external program memory adopts is serial 16K EEP ROM.Described microprocessor has 4 tunnel 12 A/D converters, is convenient to the application of sensor intelligent instrument.Microprocessor has the operating voltage range of broad: from 2.6V to 5.5V, and be little power consumption, thus the working time of lengthening portable apparatus, microprocessor has two independently timers, inner MOS oscillator construction system clock.
This microprocessor programming language is simple.Microprocessor receives 4 tunnel simulating signals: two-way sensor output signal, temperature sensor output signal and battery voltage signal.Above-mentioned signal is handled, being comprised: read signal, table look-up, data are proofreaied and correct, output to display then, trigger acousto-optic utmost point alarm device (when abnormal operating state).
Functions such as the initialization of the zeroing in the instrument, demonstration, time-delay, parameter input, working cell, data processing warning all by the modular construction design, are convenient to function and are expanded.
Use software that the nonlinearity erron of sensor, zero drift error, temperature error etc. are comprehensively revised, both simplified hardware configuration, improved measuring accuracy again.
The software of this instrument can pass through sensor ID, automatic identification sensor, and show the classification of sensor in when start on LCDs realizes that a main frame can match the function of many sensors, when production cost is reduced, also brought certain selectivity and diversity for the user.
Adopt method of interpolation, the curve of the curve of preset temperature and drift, electric current and gas concentration, at present temperature, table look-at at the zero point of correction instrument, has overcome the instrument zero instability effectively, and has influenced the factor of measuring accuracy during start.
When real-time data acquisition,, adopt the arithmetic mean method to carry out digital filtering and handle (to be 1 second) in cycle in order to eliminate the undesired signal in the sensor passage.
Automatically write down and store the Monitoring Data of setting-up time section, the user can check real-time measurement values, short-term exposure level, time weight average gas concentration, peak value gas concentration, cell voltage, the working time of instrument at any time by LCDs.
Claims (5)
1. portable intelligent gas detecting instrument is characterized in that: the external program memory and the liquid crystal display circuit of the typical curve table data of the I/V conversion amplification treatment circuit that this detector comprises one or more gas detection sensor, be connected with described each gas detection sensor, temperature sensor circuit, the microprocessor with multichannel analog signals input end, zero point that has described sensor and temperature; Described gas detection sensor is connected with the corresponding input end of analog signal of microprocessor by I/V conversion amplification treatment circuit, and temperature sensor is connected with the corresponding input end of analog signal of described microprocessor; Described external program memory all is connected with microprocessor with liquid crystal display circuit, and the temperature value that the microprocessor utilization is gathered is found out corresponding modified value from external program memory, write down and store the Monitoring Data of setting-up time section automatically.
2. a kind of portable intelligent gas detecting instrument as claimed in claim 1 is characterized in that: described sensor is the three-electrode electro Chemical sensor, and different sensors has different address codes.
3. a kind of portable intelligent gas detecting instrument as claimed in claim 1 is characterized in that: described microprocessor adopts the TSS400CFN type.
4. a kind of portable intelligent gas detecting instrument as claimed in claim 1 is characterized in that: described external program memory adopts EEPROM type storer.
5. a kind of portable intelligent gas detecting instrument as claimed in claim 1 is characterized in that: described microprocessor comprises an overload alarm output control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270719 CN2641650Y (en) | 2003-08-14 | 2003-08-14 | Portable intelligent air detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03270719 CN2641650Y (en) | 2003-08-14 | 2003-08-14 | Portable intelligent air detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2641650Y true CN2641650Y (en) | 2004-09-15 |
Family
ID=34300399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03270719 Expired - Fee Related CN2641650Y (en) | 2003-08-14 | 2003-08-14 | Portable intelligent air detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2641650Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444208C (en) * | 2006-09-04 | 2008-12-17 | 天津市浦海新技术有限公司 | Alarm with data recording device for detecting combustible gas |
| CN102680518A (en) * | 2012-05-31 | 2012-09-19 | 河南汉威电子股份有限公司 | Compensation type gas sensor and humiture compensation method thereof |
| CN101101298B (en) * | 2006-07-06 | 2012-11-28 | 沃尔克工业电子有限公司 | Method for amending measurement value obtained by aerometry device |
| CN103175656A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Nitrogen dioxide leakage detector |
| CN103529355A (en) * | 2013-10-10 | 2014-01-22 | 江苏上能新特变压器有限公司 | Wireless protection device for high-voltage fuse protector |
| CN111157675A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Detector and detection method |
-
2003
- 2003-08-14 CN CN 03270719 patent/CN2641650Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101298B (en) * | 2006-07-06 | 2012-11-28 | 沃尔克工业电子有限公司 | Method for amending measurement value obtained by aerometry device |
| CN100444208C (en) * | 2006-09-04 | 2008-12-17 | 天津市浦海新技术有限公司 | Alarm with data recording device for detecting combustible gas |
| CN103175656A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Nitrogen dioxide leakage detector |
| CN102680518A (en) * | 2012-05-31 | 2012-09-19 | 河南汉威电子股份有限公司 | Compensation type gas sensor and humiture compensation method thereof |
| CN103529355A (en) * | 2013-10-10 | 2014-01-22 | 江苏上能新特变压器有限公司 | Wireless protection device for high-voltage fuse protector |
| CN111157675A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Detector and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8086407B2 (en) | Method and device for environmental monitoring | |
| CN205374363U (en) | Poisonous gas sensor module of intelligence | |
| CN103293280B (en) | A kind of gas testing device | |
| CN103592348B (en) | Portable quick indoor air quality detector | |
| CN104807968A (en) | Gas sensor and identification and calibration method thereof | |
| CN201984116U (en) | Comprehensive evaluating device of sulfur hexafluoride electrical equipment | |
| CN102778445B (en) | Intelligent analyzer and detection method for standard state dry basis | |
| CN205049510U (en) | Air quality monitoring appearance | |
| CN203324179U (en) | High-sensitivity portable gas detection instrument based on NDIR (Non-Dispersive Infra-Red) principle | |
| CN2641650Y (en) | Portable intelligent air detector | |
| CN105738438A (en) | Instrument and method for fast detecting bicarbonate radical and carbonate radical in water through double-electrode method | |
| CN106969796A (en) | A kind of novel hand-held multi-parameter environment measuring tape deck | |
| CN203310795U (en) | Portable impedance biosensing detector | |
| CN107063347A (en) | A kind of gas sensor, monitoring system and monitoring method | |
| CN202995323U (en) | Control system of multifunctional indoor detector | |
| CN104931567A (en) | Automatic mercury ion concentration detection and control system with power supply optimization function | |
| CN201392333Y (en) | Multifunctional gas analyzer | |
| CN1504747A (en) | Ion concentration detecting instrument and detecting method | |
| CN201345156Y (en) | Toxic gas detecting alarm | |
| CN204422507U (en) | Intelligence wrist-negative ion measuring instrument | |
| Dong et al. | Research on self-calibration carbon monoxide sensor for iron mines | |
| CN201945546U (en) | Portable reinforced concrete corrosion measuring instrument | |
| CN103837658A (en) | Gas detection tester | |
| CN202794032U (en) | Standard state dry basis intelligent analyzer | |
| CN208921650U (en) | A kind of vehicle exhaust nitric oxide discharge detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |