CN2840025Y - Light-proof smokemeter - Google Patents
Light-proof smokemeter Download PDFInfo
- Publication number
- CN2840025Y CN2840025Y CN 200520122912 CN200520122912U CN2840025Y CN 2840025 Y CN2840025 Y CN 2840025Y CN 200520122912 CN200520122912 CN 200520122912 CN 200520122912 U CN200520122912 U CN 200520122912U CN 2840025 Y CN2840025 Y CN 2840025Y
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- amplifier
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Abstract
The utility model relates to a light-proof smokemeter, which comprises a measuring unit and a control unit in a separate type structure, wherein the measuring unit is composed of a shell body and a measuring chamber and a measuring circuit arranged in the shell body, and the control unit is composed of a shell body and a controlling circuit arranged in the shell body. Smoke discharged by the automobile enters into the measuring chamber from a smoke discharging inlet. Light generated by a luminous tube is changed into parallel light by a transmitting end lens of a light source, and the parallel light is focused on a photoelectric converter by a receiving end lens through a measuring passage to generate an electric signal which is sent to a CPU of a measuring part for treatment after magnification and A/D conversion, and then the electric signal is sent to a main CPU of a controlling part to be displayed. Signals detected by an oil temperature sensor and a rotating speed sensor are sent to the main CPU of the controlling part to be displayed after magnification and comparison. An auxiliary CPU of the controlling part scans a key state and is communicated with a PC to complete the transmission or the reception with the data and the state of the main CPU of the controlling part. The utility model can display time and store vehicle license plate numbers, has K value overproof prompt and can print measuring results at any time.
Description
Technical field
The utility model belongs to the measurement mechanism field that environmental protection is used, and relates to a kind of opacity smoke meter, is particularly suited for detecting the portable intelligent instrument of visible pollutant in the diesel motor smoke evacuation.
Background technology
Along with the Hyundai Motor industrial expansion, people are after satisfying the requirement of automotive performance and comfort level, also more and more higher to environmental protection requirement, the visible of emission of diesel engine causes very big harm to our living environment, and whether the smoke intensity that therefore will detect visible pollutant in the diesel engine truck exhaust meets national Specification.It is not high that traditional filter type smokemeter exists the smoke intensity measurement sensitivity, can only detect the mean value of exhaust smoke in the sampling time, can not detect moisture excessive flue gas and the deficiency that can not detect blue smoke, white cigarette, mist of oil, so at present opacity smoke meters that adopt more, but this opacity smoke meter is when carrying out surveying work in the open air, and not free demonstration can bring great inconvenience on the instrument; And in use, owing to there is not the setting of license plate number, each vehicle does not have and testing result is set up good corresponding relation, makes very the confusion of seeming when rechecking, can not understand each vehicle detection situation clearly when department of leading body at a higher level inspects; In addition, this instrument detecting be the absorption coefficient of light of diesel emission flue gas, i.e. K value, the time of testing process is very short because operating personnel's error probably is thought underproof vehicle by mistake to be qualified, the accuracy of influence detection.
Summary of the invention
Problem to be solved in the utility model is, overcomes the deficiencies in the prior art, provides a kind of measurement data opacity smoke meter accurate, simple to operate, the demonstration time and the storage cart trade mark, have coefficient of light absorption K value overproof prompts, be specially adapted to open-air the detection, user-friendly.
The utility model solves above technical matters and takes following technical scheme to realize:
According to a kind of opacity smoke meter that the utility model provides, comprise the measuring unit and the control module of split-type structural, measuring unit is made up of measuring chamber that is equipped with in housing and the housing and metering circuit; Control module is made up of the control circuit that is equipped with in housing and the housing, it is characterized in that: described metering circuit is made up of singlechip CPU, A/D converter, one-level amplifier, two-stage amplifier, photoelectric commutator, light emitting diode and power supply; Photoelectric commutator is connected with the input sequence of one-level amplifier, two-stage amplifier, A/D converter and measure portion CPU, and measure portion CPU is through the two-way connection control section of data line host CPU, and light emitting diode links to each other with power supply; Described control circuit is made up of singlechip CPU, A/D converter, amplifier, comparer, LCD, clock chip, sensor, button and printer; The control section host CPU is through data line two-way connection secondary CPU of control section of difference and clock chip, and speed probe is connected with the input sequence of amplifier, comparer and control section host CPU; Oil temperature sensor is connected with the input sequence of amplifier, A/D converter and control section host CPU; The output of control section host CPU connects LCD and printer respectively, and the input of secondary CPU of control section connects button, and secondary CPU of control section is through the two-way connection PC of data line, with the PC serial communication.
It is to take following technical scheme further to realize that the utility model solves its technical matters:
Aforesaid measuring chamber comprises pipe, phacoid, lens, pipe is divided into left and right sides two halves, be the measurement passage in it, well heater and thermostatically-controlled equipment are installed in to be measured on the channel outer wall, leaves a smoke evacuation inlet in the middle of the pipe, and the pipe two ends link to each other with phacoid respectively, and leave exhausr port respectively, lens are contained in respectively in the phacoid, and wherein an end is the light emitted end, and light emitting diode is housed in it; The other end is the light source receiving end, and photoelectric commutator is housed in it; Aerofoil fan is equipped with in the top, air channel that communicates with exhausr port, and is tightly connected by sealing gasket, and at one end exhaust ports leaves the verification mouth;
Have one to insert the tachometric survey jack of speed probe on the housing rear panel of aforesaid control module to amplifier;
Have one to insert the fuel temperature measurement jack of oil temperature sensor on the housing rear panel of aforesaid control module to amplifier;
There is a usefulness signal cable to connect the measurement interface of measure portion CPU on the housing rear panel of aforesaid control module to the control section host CPU;
Have on the housing rear panel of aforementioned control module one with the PC serial communication interface;
On the housing rear panel of aforesaid control module a power input socket is arranged;
The printer paper outlet of one printer is arranged on the housing rear panel of aforesaid control module;
One power input socket is arranged on the housing of aforesaid measuring unit;
There is a usefulness signal cable to connect the measuring-signal interface socket of control section host CPU on the housing of aforesaid measuring unit to measure portion CPU;
Aforesaid clock chip adopts DS12C887.
The utility model compared with prior art has significant advantage and beneficial effect:
Owing to adopt to measure and split-type structural that control module separates, so handled easily and be beneficial to environmental protection.Measuring unit adopts " air curtain " technology, can protect optics to avoid polluting.To the measuring chamber preheating, thermostatically-controlled equipment remains on more than 80 ℃ the temperature of measuring chamber tube wall to the measuring chamber thermostatic control to well heater after start, and the influence of temperature change measuring accuracy is avoided in the prevention condensation.Owing to increased clock chip, can be on liquid crystal display the demonstration time, be specially adapted to open-air the detection, user-friendly, and utilize the storage space of DS12C887 chip, China each province, city, municipal car plate head are stored into, when the check vehicle, just can directly call the input license plate number.By software setting, a standard K value can be set in storage unit, when the K value in measurement surpasses setting value, will point out the K value to exceed standard, more convenient user's operation.But printer changes the paper direct control in addition, takes off roller bearing as long as open printer rear cover, changes new printer paper and gets final product, and need not open cabinet, simple and fast more.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a measuring unit contour structures synoptic diagram of the present utility model;
Fig. 2 is the measuring chamber structural representation of measuring unit of the present utility model;
Fig. 3 is a control module contour structures synoptic diagram of the present utility model;
Fig. 4 is a control module housing rear panel arrangenent diagram of the present utility model;
Fig. 5 is a schematic block circuit diagram of the present utility model;
Fig. 6 is a metering circuit schematic diagram of the present utility model;
Fig. 7 is a control circuit schematic diagram of the present utility model;
Among the figure:
2. the housing rear panel 206. tachometric survey jacks 207. fuel temperature measurement jacks 208. of housing front panel 205. control modules of housing 202. LCD 203. buttons 204. control modules of control module 201. control modules are measured the outlet of interface 209. communication interfaces 210. power input sockets 211. printer papers
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and effect thereof that foundation the utility model is provided, describe in detail as after.
See also Fig. 1～7, a kind of opacity smoke meter, the measuring unit 1 and the control module 2 that comprise split-type structural, support 105 is installed on the measuring unit, measuring unit is made up of the measuring chamber 106 and the metering circuit that are equipped with in housing 120 and the housing, measuring chamber is equipped with a left circular tube 107 that is divided into left and right sides two halves, right circular tube 107 ', be measurement path 10 8 in the pipe, well heater 118 and thermostatically-controlled equipment 119 are contained in to be measured on the channel outer wall 109, well heater can be to the measuring chamber preheating after start, and thermostatically-controlled equipment can remain on more than 80 ℃ the temperature of measuring chamber tube wall to the measuring chamber thermostatic control, the influence of temperature change measuring accuracy is avoided in the prevention condensation.Leave a smoke evacuation inlet 102 in the middle of the pipe, two ends, the pipe left and right sides respectively with left and right sides phacoid 111,111 ' link to each other, and leave respectively left and right sides exhausr port 110,110 ', left and right sides lens 112,112 ' respectively are contained in the phacoid of the left and right sides, wherein an end is a light emitted end 113, light emitting diode is housed in it, and light emitting diode is a green LED, has guaranteed the reliability of the rectilinear propagation and the light absorption of light.The other end is a light source receiving end 114, and photoelectric commutator is housed in it; Aerofoil fan 101 is equipped with in 115 tops, air channel that communicate with left and right sides exhausr port, the air channel is connected by fan sealing gasket sealing 116 with aerofoil fan, guarantees the impermeability of air chamber, and leaves verification mouth 117 at left bank gas port place, can insert the verification sheet, with the accuracy of check and correction instrument.When the exhaust of automobile smoke evacuation enters measuring chamber by the smoke evacuation import; the negative pressure that fan produces also helps entering of flue gas; flue gas enters air chamber; the light that light emitting diode sends becomes directional light through light emitted end lens; measurement passage by measuring chamber; converge on the photoelectric commutator through the receiving end lens again; produce electric signal; finish preliminary measurement; the test flue gas is discharged in the gas outlet under the wind action of aerofoil fan, has so just formed the protection air curtain; promptly adopt " air curtain " technology, with the cleaning of protection optical lens.
Metering circuit is made up of singlechip CPU, A/D converter, one-level amplifier, two-stage amplifier, photoelectric commutator, light emitting diode and power supply; Photoelectric commutator is connected with the input sequence of one-level amplifier, two-stage amplifier, A/D converter and measure portion CPU, and measure portion CPU is through the two-way connection control section of data line host CPU, and light emitting diode links to each other with power supply; One power input socket 103 is arranged on the housing 120 of measuring unit and connect the measuring-signal interface socket 104 of control section host CPU to measure portion CPU with signal cable.
Photoelectric commutator changes into electric signal with the light signal that records, be n-signal, amplify by two amplifier U8 0P2337, and can be by digital regulation resistance U4 X9313 control enlargement factor, after A/D converter U2 carries out the A/D conversion, give measure portion CPU, CPU converts by handling, and calculates K value and N value and sends secondary CPU of control section to together after U7 SP232 level conversion, and host CPU, and show.The brightness of digital regulation resistance U5 X9313 may command light emitting diode.Temperature sensor in the measuring chamber amplifies by U6LMC660 and the A/D of U2 changes, and sends CPU to, sends control section host CPU, the duty of display instrument after treatment again to.
Control circuit is made up of singlechip CPU, A/D converter, amplifier, comparer, LCD, clock chip, sensor, button and printer; The control section host CPU is through data line difference two-way connection measure portion CPU, secondary CPU of control section and clock chip DS12C887, and clock chip shows the time and the storage cart trade mark reliably.Speed probe is connected with the input sequence of amplifier, comparer and control section host CPU; Oil temperature sensor is connected with the input sequence of amplifier, A/D converter and control section host CPU; The output of control section host CPU connects LCD and printer respectively, and the input of secondary CPU of control section connects button, and secondary CPU of control section is through the two-way connection PC of data line, with the PC serial communication.
U1 control section host CPU links to each other with secondary CPU of U2 control section and to carry out communication; Link to each other with U4, oil temperature signal is handled; Link to each other with U12, tach signal is handled; Link to each other with Jdis, carry out liquid crystal display; Link to each other printable measurement result with U5; Link to each other with U3, can show the current time.
Secondary CPU of U2 control section links to each other with U8, handles key value; Link to each other with U5, can finish communication with PC.
Measure portion is passed to secondary CPU of U2 control section with the state of N (light obscuration), K (absorption coefficient of light) value and the instrument of measurement by serial communication, secondary CPU of U2 control section passes to U1 control section host CPU with these values with to the result of button then, calculate and handle, and finish level conversion by U5 and link to each other with PC, finish serial communication, the operation of control instrument.The oil temperature signal that detection obtains is finished A/D by U4 and is transformed, and sends U1 control section host CPU to, handles, and obtains current oil temperature.Detection obtain tach signal, through the filtering of U12, amplify and relatively after, send the counter of U1 control section host CPU to, calculate the rotating speed of engine.Clock chip U3 links to each other with U1 control section host CPU, current time is handled and shows, and provide the RAM of oneself, for the input of license plate number and the setting of K value provide convenience.The Jdis liquid crystal display links to each other with U1 control section host CPU, and the state and the various information of N, K after handling, oil temperature, rotating speed, time, license plate number setting and instrument shown simple and fast, user friendly operation.
Principle of work of the present utility model: light source (light emitting diode) sends optical system for testing, the optical receiver (photoelectric commutator) that is absorbed with of flue gas carries out opto-electronic conversion in measuring passage, generate electric signal, amplifying through secondary and giving measure portion CPU by the A/D conversion and handle, measure portion CPU can pass to the control section host CPU to the state of data that record and instrument and show; External oil temperature sensor and speed probe through amplifying, relatively waiting processing, send the control section host CPU to and carry out data processing, can demonstrate current oil temperature and engine speed; Secondary CPU of control section can scan key-press status, with the control of complete operation personnel to instrument, and under the networking state, is responsible for the communication with PC, and finishes and the data of control section host CPU and the transmission or the reception of state; Built-in printer can be printed measurement result at any time.
In circuit, increased the DS12C887 clock chip, and by software setting can show year, month, day, the time and branch, be very easy to user's use, and the car file leader of national each province, autonomous region and municipality directly under the Central Government stored into, before detecting, can import the license plate number of tested vehicle, like this, instrument just gets up measurement result and tested vehicle storage, easily calling between inquiry and each functional department; Raising rectification at software advances, increased the K value warning function that exceeds standard newly, according to the GB requirement, this instrument detecting be the absorption coefficient of light of diesel emission flue gas, be K, the user can be provided with layout setting one K value in parameter, in testing process, when the K that records surpasses the K value that sets, instrument will point out the K value to exceed standard automatically, instrument is when dispatching from the factory, and the K value is defaulted as state's scale value, can prevent from like this to think the vehicle that exceeds standard by mistake the error of qualified vehicle take place in measurement.
Install instruments according to the following steps before use:
1. support is installed on the measuring unit.
With the sheathed catheter of sampling probe on the smoke evacuation inlet of measuring unit, and tighten screw on the conduit clip, prevent joint portion gas leakage.
3. the measuring-signal interface that connects measuring unit and control module with the measuring-signal cable.
4. respectively the power input socket of measuring unit is connected with the 220V power supply with the control module power input socket with feed cable.
5. connect tachometric survey jack and speed probe with stube cable.
6. connect fuel temperature measurement jack and oil temperature sensor with stube cable.
7. power lead is inserted in the supply socket of control module, and notice whether inspection apparatus ground connection is good, to guarantee the safety of operating personnel and instrument.
Claims (11)
1. opacity smoke meter comprises the measuring unit and the control module of split-type structural, and measuring unit is made up of measuring chamber that is equipped with in housing and the housing and metering circuit; Control module is made up of the control circuit that is equipped with in housing and the housing, it is characterized in that: described metering circuit is made up of singlechip CPU, A/D converter, one-level amplifier, two-stage amplifier, photoelectric commutator, light emitting diode and power supply; Photoelectric commutator is connected with the input sequence of one-level amplifier, two-stage amplifier, A/D converter and measure portion CPU, and measure portion CPU is through the two-way connection control section of data line host CPU, and light emitting diode links to each other with power supply; Described control circuit is made up of singlechip CPU, A/D converter, amplifier, comparer, LCD, clock chip, sensor, button and printer; The control section host CPU is through data line two-way connection secondary CPU of control section of difference and clock chip, and speed probe is connected with the input sequence of amplifier, comparer and control section host CPU; Oil temperature sensor is connected with the input sequence of amplifier, A/D converter and control section host CPU; The output of control section host CPU connects LCD and printer respectively, and the input of secondary CPU of control section connects button, and secondary CPU of control section is through the two-way connection PC of data line, with the PC serial communication.
2. opacity smoke meter according to claim 1, it is characterized in that: described measuring chamber comprises pipe, phacoid, lens, pipe is divided into left and right sides two halves, and for measuring passage, well heater and thermostatically-controlled equipment are installed in to be measured on the channel outer wall in it, leave a smoke evacuation inlet in the middle of the pipe, the pipe two ends link to each other with phacoid respectively, and leave exhausr port respectively, and lens are contained in the phacoid respectively, wherein an end is the light emitted end, and light emitting diode is housed in it; The other end is the light source receiving end, and photoelectric commutator is housed in it; Aerofoil fan is equipped with in the top, air channel that communicates with exhausr port, and is tightly connected by sealing gasket, and at one end exhaust ports leaves the verification mouth.
3. opacity smoke meter according to claim 1 is characterized in that: have one to insert the tachometric survey jack of speed probe to amplifier on the housing rear panel of described control module.
4. opacity smoke meter according to claim 1 is characterized in that: have one to insert the fuel temperature measurement jack of oil temperature sensor to amplifier on the housing rear panel of described control module.
5. opacity smoke meter according to claim 1 is characterized in that: have a usefulness signal cable to connect the measurement interface of measure portion CPU to the control section host CPU on the housing rear panel of described control module.
6. opacity smoke meter according to claim 1 is characterized in that: have on the housing rear panel of described control module one with the PC serial communication interface.
7. opacity smoke meter according to claim 1 is characterized in that: on the housing rear panel of described control module a power input socket is arranged.
8. opacity smoke meter according to claim 1 is characterized in that: the printer paper outlet of a printer is arranged on the housing rear panel of described control module.
9. opacity smoke meter according to claim 1 is characterized in that: a power input socket is arranged on the housing of described measuring unit.
10. opacity smoke meter according to claim 1 is characterized in that: have a usefulness signal cable to connect the measuring-signal interface socket of control section host CPU to measure portion CPU on the housing of described measuring unit.
11. opacity smoke meter according to claim 1 is characterized in that: described clock chip adopts DS12C887.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122912 CN2840025Y (en) | 2005-10-31 | 2005-10-31 | Light-proof smokemeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122912 CN2840025Y (en) | 2005-10-31 | 2005-10-31 | Light-proof smokemeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2840025Y true CN2840025Y (en) | 2006-11-22 |
Family
ID=37428006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520122912 Expired - Fee Related CN2840025Y (en) | 2005-10-31 | 2005-10-31 | Light-proof smokemeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2840025Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458524A (en) * | 2014-12-10 | 2015-03-25 | 浙江浙大鸣泉科技有限公司 | Optical platform of transmission-type smoke meter with protection lens |
-
2005
- 2005-10-31 CN CN 200520122912 patent/CN2840025Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458524A (en) * | 2014-12-10 | 2015-03-25 | 浙江浙大鸣泉科技有限公司 | Optical platform of transmission-type smoke meter with protection lens |
| CN104458524B (en) * | 2014-12-10 | 2023-10-03 | 浙江浙大鸣泉科技有限公司 | Optical platform of transmission type smoke meter with lens protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEI SUOKU Free format text: FORMER OWNER: SHENGWEI SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD., TIANJIN CITY Effective date: 20070914 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070914 Address after: 300132 No. 25, Xiaoxinzhuang Avenue, Hongqiao District, Tianjin Patentee after: Wei Suoku Address before: 300132 No. 25, Xiaoxinzhuang Avenue, Hongqiao District, Tianjin Patentee before: Tianjin Shengwei Development of Science Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENGWEI SCIENCE & TECHNOLOGY DEVELOPMENT CO., LT Free format text: FORMER OWNER: WEI SUOKU Effective date: 20080111 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080111 Address after: No. 25, Xiaoxinzhuang Avenue, Hongqiao District, Tianjin, 300132 Patentee after: Tianjin Shengwei Development of Science Co., Ltd. Address before: No. 25, Xiaoxinzhuang Avenue, Hongqiao District, Tianjin, 300132 Patentee before: Wei Suoku |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20141031 |
|
| EXPY | Termination of patent right or utility model |