CN203083524U - High-sensitivity strip deviation detection device based on array infrared technology - Google Patents
High-sensitivity strip deviation detection device based on array infrared technology Download PDFInfo
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- CN203083524U CN203083524U CN 201220476070 CN201220476070U CN203083524U CN 203083524 U CN203083524 U CN 203083524U CN 201220476070 CN201220476070 CN 201220476070 CN 201220476070 U CN201220476070 U CN 201220476070U CN 203083524 U CN203083524 U CN 203083524U
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Abstract
The utility model relates to a high-sensitivity strip deviation detection device based on an array infrared technology. The high-sensitivity strip deviation detection device based on the array infrared technology comprises an infrared emitting device, an infrared receiving device and an auxiliary calibrating device, wherein the infrared emitting device and the infrared receiving device are respectively fixed at the two ends of the edges of a transmitted strip, the fixing positions of the infrared emitting device and the infrared receiving device correspond to each other, and the auxiliary calibrating device is located at the two sides of the infrared emitting device and the infrared receiving device. In the high-sensitivity strip deviation detection device, an infrared calibrating device is introduced, so that the installation process is simple and easy, the calibration is simple, convenient and visual, and the workload and working strength of installation and calibration are reduced substantially; a differential array thought is introduced, so that the measurement resolution, the response speed and sensitivity of a system can be improved substantially with a lower cost. A pulse driving unit based on a composite frequency is designed in the infrared emitting device, and an automatic gain control unit (AGC) is introduced in the infrared receiving device, so that the robustness, reliability, stability, precision, sensitivity and anti-interference capability of the high-sensitivity strip deviation detection device based on the array infrared technology are improved substantially, and a zero drift is realized.
Description
Technical field
The utility model belongs to detecting sensor technology in the automation field, is a kind of metallic foil that is applicable to, cold-strip steel, the high sensitivity band offset detecting device based on the array infrared technique in all kinds of band production lines such as paper tape.
Background technology
Along with the continuous expansion of continuous development, especially manufacturing industry and real estate industry's scale of national economy, the demand of China's steel presents ascendant trend always.Traditional Iron and Steel Production processing line running speed is slow, and efficient is low and failure rate is high, thereby the robotization of Iron and Steel Production processing line and scale just improve constantly.
In all kinds of band production lines such as the galvanized wire in existing cold-strip steel unit, tinned wire, pickling line, because unit has long, the characteristics such as quantity is many, running speed height of length, and the out-of-flatness of band self, make band be easy to occur the phenomenon that laterally swings sideslip and vertically pitch and rise and fall and jump in process of production.
Sideslip not only can influence the machining precision and the quality of band, causes band can't roll up together, also can make strip edge collide flanging, even damages whole coiled strip.And because production line has higher linear velocity, more serious sideslip accident also can cause band to bump with unit equipment in process of production, and causes serious consequences such as device damage, broken belt, stopping production.Control this problem for solving the band sideslip, domestic and international many units are all studied, and on all kinds of band production lines, have developed the midline position control system, and its employed transmission deviation detection method mainly contains following several types:
1) bias detecting method of forming based on high frequency fluorescent tube and light-receiving device, these class methods are based on the high frequency fluorescent tube, price is relatively cheap, but because the pollution of high frequency fluorescent tube is big, the life-span is low, failure rate is high, the production parking accident that causes because of lamp source fault, especially for galvanized wire, tinned wire, its loss is very big.On the other hand, since use is visible daylight, will be subjected to the influence of ambient light.No matter be daytime or evening,, make that its sensitivity is lower as long as have a branch of sunlight or light all can badly influence the control effect of band skew.In addition, because these class methods use the high frequency fluorescent tube as the lamp source, and fluorescent tube can discharge a large amount of mercury after damaging, its processing means complexity, and cost is very high, and the environmental pollution risk is very big.It is reported that a common fluorescent tube contains mercury up to 23 milligrams, can pollute the air of about 8000 tons of water and 2400 cubic metres; Fluorescent lamp tube uses lead glass usually, and the massicot in the lead glass can slowly be separated out by displacement under various physical environments.Therefore, even fluorescent tube is adopted the mode of landfill or burning, these pollutants finally all can destroy existent environment of people with various forms, and serious harm is to human health.
2) based on the bias detecting method of Hall magnetic induction technology, these class methods are based on Hall magnetic induction technology, avoided the life-span of last scheme low effectively, affected by environment big, shortcomings such as sensitivity is low, but since Hall magnetic induction technology itself to have measurement range little, energy consumption is big, expensive shortcoming, therefore cause in actual use based on the detecting sensor of these class methods, it is short not only to have range, energy consumption is big, shortcoming such as cost an arm and a leg, but also can be because its measurement range is little, cause in vertical direction, spacing between detecting sensor and the band is too small, bump easily, and then make the core devices of sensor unit occur damaging, need frequent checking and changing, this has not only improved its operating cost, has equally also influenced its widespread use in band skew control.
3) based on the bias detecting method of laser technology, these class methods are based on laser technology, has workplace apart from bigger, advantages such as sensitivity is higher, and energy consumption is lower, environmental pollution is little, but this class methods scope of application is very narrow, thickness requirement to band to be detected is very high, need be strict controlled between the 2-4 millimeter, otherwise can't operate as normal, this makes this method can't be applied to the manufacturing procedure of a lot of light sheets.In addition, these class methods also have that range is lacked, cost an arm and a leg, less stable, and shortcomings such as installation and maintenance difficulty can't satisfy the requirement of band offset detection, therefore also are not widely used.
For addressing these problems, the patent No. is ZL200610124524.7, denomination of invention discloses a kind of based on ultrared band transmission deviation detecting sensor for the patent of invention of " band transmission deviation detecting sensor ", it is big that this sensor efficiently solves the existing pollution of above-mentioned two class sensors, life-span is low, affected by environment big, energy consumption is big, shortcoming such as cost an arm and a leg, but it has the installation calibrating difficulty, precision is lower, stability is not high, drift phenomenon is serious, sensitivity is subjected to shortcomings such as the distance affects between transmitter and the receiver is bigger, has influenced its effect in band skew control equally.
At the existing in prior technology problem, the utility model proposes a kind of new type of high sensitivity band bias detecting method and device thereof based on the array infrared technique.It has installs simply, calibrate easy, highly sensitive, strong interference immunity, reliable and stable, zero shift, energy consumption is extremely low, cheap, failure rate is low, pollution-free, advantages such as range and workplace distance are big, and be not affected by environment have solved the existing in prior technology problem preferably.
Summary of the invention
The purpose of this utility model provide a kind of have install simple, calibrate easy, highly sensitive, strong interference immunity, reliable and stable, zero shift, energy consumption is extremely low, cheap, failure rate is low, pollution-free, range and workplace are apart from big, high sensitivity band offset detecting device based on the array infrared technique not affected by environment is to overcome the deficiencies in the prior art.
For achieving the above object, the technical scheme that adopts of the present utility model is:
Trip offset detecting means, based on array infrared technology, high sensitivity , comprises an infrared transmitting device, infrared receiver, and auxiliary calibration device, wherein the infrared emission devices and infrared? Receiving means are fixed to the edge of the transmission strip ends, infrared emission unit, and a fixed position of the infrared receiver correspond to each other, the auxiliary calibration device is located on the infrared transmitting device and the sides of the infrared receiving device, means for calibrating the infrared transmitter and infrared receiver installation location is correct or not,
Infrared launcher: comprise power supply unit, the pulse generation unit, the variable-frequency pulse driver element, infrared emission unit and optical processing unit, be characterized in, produce the low frequency carrier signal signal of a 500-800Hz and the high-frequency pulse signal of a 20-60KHz by the pulse generation unit, and by the variable-frequency pulse driver element, high-frequency pulse signal is carried out Combined Processing in the low frequency carrier signal signal, thereby obtain a kind of frequency conversion composite pulse signal with variable frequency of high anti-interference and high reliability ability, and this pulse signal is transported to infrared emission unit, handle by the optical processing unit, launch after the infrared signal that is produced become parallel infrared pulse light signal, wherein, infrared emission unit is to be connected by series-parallel system by plural at least infrared transmitting tube to constitute;
Infrared receiving device: comprise power supply unit, the array infrared receiver, output unit is amplified in automatic gain control unit AGC and signal shaping, be characterized in, the array infrared receiver is pressed differential mode by a plurality of infrared receiving tubes, constitute with array format, be responsible for receiving the parallel infrared pulse light signal of launching by infrared launcher, automatic gain control unit AGC then is responsible for carrying out gain control by the received infrared pulse signal of infrared receiver, make that the distance between infrared receiving device and infrared launcher is far away, when signal is more weak, can carry out gain compensation automatically to signal, improve the sensitivity of system; And the close together between infrared receiving device and infrared launcher when signal is strong, can gains automatically to signal and subdue, and avoids signal to cause distortion by force because of amplifying, and has improved the sensitivity of system.Signal shaping is amplified output unit and then the signal of being handled by automatic gain control unit AGC is carried out shaping and amplification, and received pulse signal is exported by the requirement of midline position control system after treatment;
Assisted calibration device: comprise calibrating signal transmitter module and calibrating signal receiver module, wherein, the calibrating signal transmitter module comprises power supply unit, calibrating signal generation unit and calibrating signal transmitter unit, the calibrating signal receiver module then comprises the calibrating signal receiving element and shows output unit, described assisted calibration device lays respectively at the both sides of infrared launcher and infrared receiving device, whether the installation site that is used to calibrate infrared launcher and infrared receiving device is correct, the calibrating signal generation unit is responsible for producing a special pulse signal, and the calibrating signal transmitter unit is made of by the series-parallel system connection one or more signal power valves, be responsible for the transmitting calibration pulse signal, the calibrating signal receiving element then is made of the parallel connection of one or more signal receiving tube, after system powers on, the automatic transmitting calibration pulse signal of calibrating signal transmitter unit, after the calibrating signal receiving element receives the calibration pulse signal, drive the demonstration output unit and constantly export the successful information of calibration, otherwise, if the calibrating signal receiving element does not receive the calibration pulse signal, show that then output unit constantly exports the information of calibration failure;
The surface of described infrared receiving device and assisted calibration device calibrating signal receiver module all has a plurality of and the corresponding hole of receiving tube number, all receiving tubes place in the hole respectively, and this makes the utility model described band transmission deviation detection method and device thereof can not be subjected to the influence of ambient light.Secondly,, make that installation process is simple, calibration is easy to be directly perceived, significantly reduced the workload and the working strength of installation calibrating because the utility model has been introduced infrared calibrating installation.In addition, the utility model adopts digital technology, has introduced the thought of difference array, makes and can improve Measurement Resolution, response speed and the sensitivity of system greatly with lower cost.On the other hand, the utility model has designed the pulse driver unit based on combination frequency in infrared launcher, in infrared receiving device, introduced automatic gain control unit AGC, this has improved robustness of the present utility model, reliability, stability, precision, sensitivity and antijamming capability greatly, realized zero shift, the sensitivity of system's output and the advantages such as range-independence between precision and infrared launcher and the infrared receiving device.
Because the utility model all adopts electronic devices and components to constitute, so the utility model also has that cost is low, energy consumption is little, simple in structure, advantages such as volume is little, in light weight, easy to use, energy-conserving and environment-protective, has solved the existing in prior technology problem preferably.
The utility model not only is used in the belt transmission midline position control system of band production line, also is equally applicable in the detection control system of transmission location skew of belt transmission systems such as plastic foil production, belt conveyor of cloth, the plastic molding and processing plant of paper tape, the weaving mill in paper mill.
Description of drawings:
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the mode that the installs and fixes synoptic diagram of the utility model embodiment.
Fig. 3 is the infrared launcher optical processing cellular construction figure of the utility model embodiment.
Fig. 4 is the circuit theory diagrams of the signal emission module of the infrared launcher of the utility model embodiment and assisted calibration device.
Fig. 5 is the circuit theory diagrams of the infrared receiving device of the utility model embodiment.
Fig. 6 is the array infrared receiver physical arrangement figure in the utility model embodiment infrared receiving device.
Fig. 7 is the infrared calibration receiver module of the assisted calibration device principle schematic of the utility model embodiment.
Embodiment:
Below in conjunction with drawings and Examples the utility model is described in further detail, but this embodiment should not be construed as restriction of the present utility model.
As shown in Figure 1, the utility model comprises infrared launcher, infrared receiving device and three ingredients of assisted calibration device.As shown in Figure 2, the assisted calibration device of the utility model embodiment comprises infrared calibrating signal transmitter module 7 and infrared calibrating signal receiver module 8 two parts, wherein, the infrared calibrating signal transmitter module 7 and the infrared launcher 3 of assisted calibration device are on the same mechanical water plane, and the infrared calibrating signal receiver module 8 of assisted calibration device also is on the same physical unit surface level with infrared receiving device 2.Mutual relationship between them and fixed form are as shown in Figure 2.
As shown in Figure 2, infrared receiving device 2 and infrared launcher 3 are separately fixed at the two ends up and down at motion band 1 edge in the transmission.Wherein, infrared receiving device 2 and infrared launcher 3 shells are rectangular parallelepiped, and a relative side respectively has window, and protective glass 6 is installed on the window.Infrared receiving tube array and signal processing circuit board 4 are installed in the infrared receiving device 2.Infrared emission circuit 5 is installed in the infrared launcher 3.Solid arrow among Fig. 2 is the parallel infrared light of infrared launcher 3 to infrared receiving device 2 projections.Empty arrow among Fig. 2 is the assisted calibration signal of infrared calibrating signal transmitter module 7 to infrared calibrating signal receiver module 8 emissions.What the dotted line among Fig. 2 was represented is the infrared detection signal that passive movement band 1 covers.
As shown in Figure 3, the infrared signal that infrared emission unit produced that the infrared launcher optical processing unit of the utility model embodiment will be formed via 12 infraluminescence pipes is by the parallel infrared pulse light signal of convex lens refraction formation.Groove among Fig. 3 is made by the strip plastics 11 of not saturating infrared light, the surface has 12 holes, efficient beam scope as aperture diaphragm control infraluminescence pipe has reduced the interference between the infrared transmitting tube on the one hand, has avoided the influence of reflected light to source of parallel light on the other hand.Convex lens 10 adopt the lens of track and field racetrack, by the optimization to structure, satisfied the needs of the directional light of long distance on the one hand, have overcome the influence of the directional light blind area that the typical circular lens cause on the other hand, and have had the easy-to-install characteristics.In the infrared launcher course of work, 12 infrared-emitting diodes 9 by the aperture diaphragm constraint of groove, send the infrared beam of certain width scope as pointolite, through the refraction of concavees lens 10, form the strip directional light.
In order to reduce cost, shared identical circuit, the utility model embodiment are with the signal emission module design of infrared launcher and assisted calibration device together.The infrared launcher after compound and the signal emission module circuit theory diagrams of assisted calibration device have been showed among Fig. 4.As shown in Figure 4, this circuit has comprised four parts such as power supply unit, pulse generation unit, variable-frequency pulse driver element and infrared emission unit.Wherein, infrared emission unit is made of the infrared transmitting tube LED1-LED3 parallel connection of same 3 series connection of infrared transmitting tube RD1-RD12 of 12 series connection.The effect of RD1-RD12 provides the infrared signal as detection signal, and LED1-LED3 is on three summits in the outside of a relative side plane rectangle with infrared receiving device, and its effect provides the infrared signal as the assisted calibration signal.The pulse generation unit is made of 2 NE555 chips and a small amount of peripheral circuit, produces the low frequency carrier signal signal of a 500-800Hz and the high-frequency pulse signal of a 20-60KHz.The output terminal of pulse generation unit links to each other with the variable-frequency pulse driver element, by the variable-frequency pulse driver element, high-frequency pulse signal is carried out compound and processing and amplifying in the low frequency carrier signal signal, thereby obtain a kind of frequency conversion composite pulse signal, realize modulation the infrared emission circuit with variable frequency of high anti-interference and high reliability ability.The collector of variable-frequency pulse driver element links to each other with the negative terminal of infrared emission unit radiating circuit, drives infrared emission unit and produces infrared signal.
As shown in Figure 5, the infrared receiving device of the utility model embodiment is made of power supply unit, array infrared receiver, automatic gain control unit AGC, signal shaping amplification output unit.Wherein, the array infrared receiver is to be arranged with the matrix form of 8 row, 32 row by 256 infrared receiving tubes to form, and is responsible for receiving the parallel infrared pulse light signal of being launched by infrared launcher, and its physical arrangement as shown in Figure 6.As shown in Figure 6, in the array infrared receiver of the utility model embodiment, each infrared receiving tube is again equidistantly to arrange along the positive dirction dislocation in the same row, on line direction, the sensitivity centre spacing of each infrared receiving tube is 0.125cm, and on column direction, the sensitivity centre spacing of each infrared receiving tube is 3.0cm, thereby has formed a kind of special difference spread pattern.In addition, the infrared receiving device surface also has a plurality of and the corresponding hole of infrared receiving tube number, and all receiving tubes place in the hole respectively, make the utility model embodiment can not be subjected to the influence of ambient light.
As shown in Figure 5, the output terminal of each infrared receiving tube all is connected with automatic gain control unit AGC, its function is to carrying out gain control by the received infrared pulse signal of infrared receiver, make that the distance between infrared receiving device and infrared launcher is far away, when signal is more weak, can carry out gain compensation automatically to signal, improve the sensitivity of system; And the close together between infrared receiving device and infrared launcher, when signal is strong, can gain automatically to signal and subdue, avoid signal to cause distortion by force because of amplifying, improve sensitivity, robustness, reliability and the antijamming capability of system, made the sensitivity of system output and the range-independence between precision and infrared launcher and the infrared receiving device.
As shown in Figure 5, signal shaping is amplified output unit and is made of single-chip microprocessor MCU, analog-digital chip DAC with peripheral accessory circuit, it adopts the concurrent working pattern, mode by row/row, conducting whether duty to the infrared receiving tube in the array infrared receiver is carried out line by line/column scan, and scanning result carried out calculation process, result with computing, that is the side-play amount of band, send into analog-digital chip DAC, export corresponding analog control signal by the requirement of midline position control system.
By the photoelectric characteristic of infrared receiving tube as can be known, in embodiment of the present utility model, because the utility model only to the conducting whether duty of infrared receiving tube scans, and adopt digital form to handle, therefore, it has that response speed is fast, highly sensitive, precision is high, Measurement Resolution is high, the linearity is good, the characteristics of zero shift.
As shown in Figure 7, the infrared calibrating signal receiver module of assisted calibration device is made of power supply unit, infrared calibrating signal receiving element, automatic gain control unit AGC, signal shaping amplification output unit and align mode display unit.Wherein, infrared calibrating signal receiving element is made up of three infrared receiving tube VD1-VD3, is used to receive the assisted calibration signal of being launched by the infrared calibrating signal transmitter module of assisted calibration device.The surface of the infrared calibrating signal receiver module of assisted calibration device have 3 with the infrared calibrating signal transmitter module of assisted calibration device in corresponding hole, infrared transmitting tube position, infrared receiving tube VD1-VD3 is respectively placed in the hole, its objective is the influence of isolated environment light.VD1-VD3 all is connected with automatic gain control unit AGC, amplify output unit via the signal shaping that operational amplifier constitutes, the assisted calibration signal of being handled by automatic gain control unit AGC is carried out shaping amplify, the result is outputed to the align mode display unit that is made of light emitting diode show output.In actual the use, when the mechanical water plane at infrared emitter place with and the mechanical water plane at infrared receiving device place between when being in the position that is parallel to each other, all light emitting diodes in the align mode display unit all can be lighted, and represent to calibrate successfully.
Because the photoelectric characteristic of infrared receiving tube when unglazed the photograph, has only very little reverse drain saturation current in the circuit, be equivalent to cut-off state this moment; When rayed, oppositely drain saturation current increases greatly, forms photocurrent, is equivalent to conducting state.In other words, when infrared rayed arrived receiving tube, infrared receiving tube was equivalent to the switch of a conducting, and when it does not receive infrared light, is equivalent to the switch of a disconnection.Receive the pipe conducting of infrared light photograph, be equivalent to switch and be pressed; The pipe that does not receive the infrared light photograph does not have conducting, is equivalent to switch and is not pressed.When skew took place the band steel on the transmission line, the part that is offset out transport tape can hide from radiating circuit shone the infrared light that gets off, and the corresponding infrared receiving tube in below will be in infrared shadow region, and pipe changes closed condition into by opening.When side-play amount changed, infrared shadow region also can change thereupon, and the receiving tube that is covered also corresponding variation can take place.Therefore, can obtain side-play amount, handle and export the analog quantity of a reaction side-play amount by the state that detects the receiving tube array with steel.Because what scanning detected is the open and-shut mode of receiving tube, so this device has fast, the highly sensitive characteristics of response speed again.
After the utility model installs two infrared receiving devices and infrared launcher in use, at first calibrate by calibrating installation, constantly adjust position and angle between infrared receiving device and the emitter, make the pilot lamp in the calibrating installation light, this moment, the two plane, place promptly was in the position that is parallel to each other.
After output terminal of the present utility model connected control device, control device just can be finished and control effectively after the skew incident taking place in the band transmission course.
Clearly, the utility model is not limited to the foregoing description, but can change under the situation that does not break away from invention scope and thought and revise, so this embodiment should not be construed as restriction of the present utility model.
The content that this instructions is not described in detail belongs to and well known to a person skilled in the art prior art.
Claims (8)
1. high sensitivity band offset detecting device based on the array infrared technique, comprise infrared launcher, infrared receiving device and assisted calibration device, wherein infrared launcher and infrared receiving device are separately fixed at the two ends, band edge in the transmission, the fixed position of infrared launcher and infrared receiving device is corresponding mutually, and the assisted calibration device then is positioned at the both sides of infrared launcher and infrared receiving device.
2. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 1 is characterized in that: described
Infrared launcher comprises power supply unit, pulse generation unit, variable-frequency pulse driver element, infrared emission unit and optical processing unit, the output of pulse generation unit is connected with infrared emission unit, infrared emission unit output is handled by the optical processing unit, wherein, infrared emission unit is to be connected by series-parallel system by plural at least infrared transmitting tube to constitute;
Infrared receiving device comprises power supply unit, array infrared receiver, automatic gain control unit AGC and signal shaping amplification output unit, described infrared receiving device array infrared receiver is pressed differential mode by a plurality of infrared receiving tubes, constitute with array format, described array infrared receiver amplifies output unit by automatic gain control unit AGC with signal shaping and is connected;
The assisted calibration device comprises calibrating signal transmitter module and calibrating signal receiver module, wherein, the calibrating signal transmitter module comprises power supply unit, calibrating signal generation unit and calibrating signal transmitter unit, the calibrating signal receiver module then comprises the calibrating signal receiving element and shows output unit, described assisted calibration device lays respectively at the both sides of infrared launcher and infrared receiving device, the calibrating signal transmitter unit is made of by the series-parallel system connection one or more signal power valves, and the calibrating signal receiving element then is made of the parallel connection of one or more signal receiving tube;
3. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 1 or 2, it is characterized in that: the surface of described infrared receiving device and assisted calibration device calibrating signal receiver module all has a plurality of and the corresponding hole of receiving tube number, and all receiving tubes place in the hole respectively.
4. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 2; it is characterized in that: described infrared receiving device and infrared launcher shell are rectangular parallelepiped; a relative side respectively has window; protective glass is installed on the window; infrared receiving tube array and signal processing circuit board are installed in the infrared receiving device, the infrared emission circuit is installed in the infrared launcher.
5. as claim 2 or 4 described high sensitivity band offset detecting devices based on the array infrared technique, it is characterized in that: the infrared launcher optical processing unit in the described infrared launcher is made up of 12 infraluminescence pipes, be provided with convex lens on each infraluminescence pipe, 12 infraluminescence pipes are arranged in the groove of described rectangular parallelepiped, described groove is made by the strip plastics of not saturating infrared light, and the surface has 12 holes.
6. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 2, it is characterized in that: the signal emission module of described infrared launcher and assisted calibration device is set together, described signal emission module comprises power supply unit, the pulse generation unit, four parts of variable-frequency pulse driver element and infrared emission unit, wherein, infrared emission unit is made of the infrared transmitting tube LED1-LED3 parallel connection of same 3 series connection of infrared transmitting tube RD1-RD12 of 12 series connection, infrared transmitting tube LED1-LED3 is on three summits in the outside of a relative side plane rectangle with infrared receiving device, described pulse generation unit is made of 2 NE555 chips and a small amount of peripheral circuit, the output terminal of described pulse generation unit links to each other with the variable-frequency pulse driver element, and the collector of described variable-frequency pulse driver element links to each other with the negative terminal of infrared emission unit radiating circuit.
7. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 2, it is characterized in that: described array infrared receiver is to be arranged with the matrix form of 8 row, 32 row by 256 infrared receiving tubes to form, wherein, each infrared receiving tube is equidistantly to arrange along the positive dirction dislocation in the same row, on line direction, the sensitivity centre spacing of each infrared receiving tube is 0.125cm, on column direction, the sensitivity centre spacing of each infrared receiving tube is 3.0cm, the infrared receiving device surface also has a plurality of and the corresponding hole of infrared receiving tube number, and all receiving tubes place in the hole respectively.
8. the high sensitivity band offset detecting device based on the array infrared technique as claimed in claim 2, it is characterized in that: infrared receiver is made up of three infrared receiving tube VD1-VD3 in the infrared calibration receiver module of described assisted calibration device, the surface of the infrared calibration receiver module of assisted calibration device have 3 with the infrared calibration transmitter module of assisted calibration device in corresponding hole, infrared transmitting tube position, infrared receiving tube VD1-VD3 is respectively placed in the hole, infrared receiving tube VD1-VD3 all is connected with automatic gain control unit AGC, and automatic gain control unit AGC amplifies output unit with the signal shaping that operational amplifier constitutes and is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220476070 CN203083524U (en) | 2012-09-17 | 2012-09-17 | High-sensitivity strip deviation detection device based on array infrared technology |
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| CN 201220476070 CN203083524U (en) | 2012-09-17 | 2012-09-17 | High-sensitivity strip deviation detection device based on array infrared technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878926A (en) * | 2012-09-17 | 2013-01-16 | 武汉理工大学 | High-sensitivity strip drift detection device based on array infrared technology |
| CN108107479A (en) * | 2017-12-07 | 2018-06-01 | 华东交通大学 | Firm cargo state monitoring device is rolled up in a kind of railway transportation |
| CN109570665A (en) * | 2018-12-28 | 2019-04-05 | 太仓新思成模具钢有限公司 | A kind of high-precision detection device and its detection method for mould steel |
-
2012
- 2012-09-17 CN CN 201220476070 patent/CN203083524U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878926A (en) * | 2012-09-17 | 2013-01-16 | 武汉理工大学 | High-sensitivity strip drift detection device based on array infrared technology |
| CN102878926B (en) * | 2012-09-17 | 2015-05-06 | 武汉理工大学 | High-sensitivity strip drift detection device based on array infrared technology |
| CN108107479A (en) * | 2017-12-07 | 2018-06-01 | 华东交通大学 | Firm cargo state monitoring device is rolled up in a kind of railway transportation |
| CN109570665A (en) * | 2018-12-28 | 2019-04-05 | 太仓新思成模具钢有限公司 | A kind of high-precision detection device and its detection method for mould steel |
| CN109570665B (en) * | 2018-12-28 | 2023-12-22 | 太仓成和信精密科技有限公司 | High-precision detection device for die steel and detection method thereof |
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