PARALLAX INC 28041 LaserPING Rangefinder Module
Iyo LaserPING 2m Rangefinder inopa nzira iri nyore yekuyera chinhambwe. Iyi iri pedyo-infrared, nguva-ye-ndege (TOF) sensor yakanakira kutora zviyero pakati pezvinofamba kana zvakamira zvinhu. Pini imwe chete yeI/O inoshandiswa kune ese ari maviri kubvunza iyo LaserPING sensor kune yayo ichangoburwa nhambwe kuyerwa, uye kuverenga mhinduro. Iyo LaserPING 2m Rangefinder inogona kushandiswa neinenge chero microcontroller, ichishandisa yayo PWM modhi kana sarudzo serial mode. Yakagadzirirwa kuva dunhu- uye kodhi-inopindirana nePING))) Ultrasonic Distance Sensor, ichiita kuti zvikumbiro zvigadziriswe apo mamiriro akasiyana ezvakatipoteredza anoda kutariswa. Zviyero zvinogona kutorwa kuburikidza ne acrylic hwindo kuchengetedza sensor.
Iyo sensor yakavakirwa-mukati-co-processor inovimbisa iwo akakodzera logic mazinga. Yayo yeI / O yekubatanidza inoshanda pane imwechete voltage inopihwa kuVIN pini, kuti ienderane ne3.3V uye 5V microcontrollers.
Features
- Isiri-yekusangana nhambwe kuyerwa ine 2 -200 cm renji
- Factory pre-calibrated kuti inyatsoita ne 1 mm resolution
- Ziso-rakachengeteka risingaoneki pedyo-infrared (IR) kuvhenekera uchishandisa kirasi 1 laser emitter
- Reverse kudzivirira polarity kana VIN neGND zvakachinjaniswa netsaona
- Onboard microprocessor inobata yakaoma sensor code
- Inoenderana ne3.3V uye 5V microcontrollers
- Breadboard-inoshamwaridzika 3-pini SIP fomu-chinhu chine gomba rekukwira
Mazano ekushandisa
- Zvidzidzo zvefizikiki
- Security systems
- Interactive animated exhibits
- Robotics navigation uye kupaka mubatsiri masisitimu
- Interactive maapplication akadai sekuona ruoko uye 1D gesture kuzivikanwa
- Kuonekwa kwevhoriyamu kana kureba mumasystem control system
Zvinotaurwa Nezvakakosha
- Laser: 850 nm VCSEL (Vertical Cavity Surface Emitting Laser)
- Range: 2-200 cm
- Resolution: 1 mm
- Yakajairika refresh rate: 15 Hz PWM maitiro, 22 Hz serial mode
- Simba rinodiwa: +3.3V DC kusvika +5 VDC; 25 mA
- Kushanda tembiricha: +14 kusvika +140 °F (-10 kusvika +60 °C)
- Laser kuchengetedzwa kweziso: pedyo-infrared Kirasi 1 laser chigadzirwa
- Munda wekuvhenekera: 23° madhigirii
- Munda we view: 55° madhigirii
- Fomu factor: 3-pini musoro wechirume une 0.1 ″ nzvimbo
- Pcb kukura: 22 x 16 mm
Kutanga
Batanidza mapini eLaserPING sensor kune simba, pasi, uye yako microcontroller's I/O pini sezvakaratidzwa mumufananidzo. Ziva kuti dhayagiramu inoratidza kumashure kwe sensor; nongedzera divi rechikamu chakananga kune chako chinangwa. Iyo LaserPING sensor inotsigirwa neBlocklyProp zvidhinha, Propeller C maraibhurari, uye example kodhi yeBASIC Stamp uye Arduino Uno. Iyo yedunhu- uye kodhi-inoenderana nezvikumbiro zvePING))) Ultrasonic Distance Sensor (#28015). Tarisa kudhawunirodha uye tutorial link pane iyo sensor's chigadzirwa peji; tsvaga "28041" pawww.parallax.com.
Kukurukurirana Protocol
Iyo sensor inoburitsa infrared (IR) laser pulse iyo inofamba nemumhepo, inoratidzira kubva pazvinhu uye yobva yabvondokera kumashure kune sensor. Iyo LaserPING module inoyera kuti inguva yakareba sei iyo inoratidzwa laser pulse inotora kudzoka kune sensor, uye inoshandura iyi nguva kuyerwa kuita mamirimita, ine 1 mm resolution. Yako microcontroller inobvunza iyo LaserPING module yeyekupedzisira kuyerwa (iyo inozorodzwa anenge makumi mana ega ega) uye yobva yagashira kukosha kudzoserwa pane imwechete I/O pini, ingave inoshanduka-yakafara pulse muPWM modhi, kana se ASCII mavara mune serial. mode.
PWM Mode
PWM default mode yakagadzirirwa kuve kodhi-inoenderana nePING))) Ultrasonic Distance Sensor (#28015) kodhi. Inogona kutaurirana ne3.3 V kana 5 V TTL kana CMOS microcontrollers. PWM Mode inoshandisa bidirectional TTL pulse interface pane imwechete I/O pini (SIG). Iyo SIG pini ichave isina basa yakaderera, uye ese ari maviri ekuisa pulse uye echo pulse ichave yakanaka kumusoro, paVIN vol.tage.
| Pulse width | Condition |
| 115 kusvika 290 µs | Yakaderedzwa kuyerwa kwechokwadi |
| 290 µs kusvika 12 ms | Chiyero chepamusoro chekururama |
| 13 ms | Kuyera kusiriko — chinangwa chiri pedyo zvakanyanya kana kuresa |
| 14 ms | Yemukati sensor kukanganisa |
| 15 ms | Yemukati sensor timeout |
Iyo pulse wide inoenzana nedaro, uye hainyanyi kushanduka ne ambient tembiricha, kumanikidza, kana humidity.
Kushandura hupamhi hwekupuruzira kubva panguva, mu μs, kusvika mm, shandisa equation inotevera: Distance (mm) = Pulse Width (ms) × 171.5 Kushandura hupamhi hwekupuruzira kubva panguva, mu μs, kuita inches, shandisa inotevera equation: Distance (inches) = Pulse Width (ms) × 6.752
Serial Data Mode
Serial data mode inoshanda pa9600 baud ine bidirectional TTL interface pane imwechete I/O pini (SIG), uye inokwanisa kutaura ne3.3 V kana 5 V TTL kana CMOS microcontrollers. Iyo SIG pini ichave isina basa yakakwira mune iyi modhi, paVIN voltage. Kuti uchinje kubva pane yakasarudzika PWM modhi kuenda kune serial modhi, tyaira iyo SIG pini yakaderera, wozotumira matatu akakwira zana µs pulses ane 100 µs, kana kureba, akadzika maburi pakati. Izvi zvinogona kuitwa nekutumira capital 'I' character.
Zano: Kuti ishandiswe ne microcontrollers isingatsigire bidirectional serial, iyo LaserPING module inogona kugadzirwa kuti imuke-mumu serial mode. Mune ino kesi, chete serial-rx yekupinda inodiwa pane yako microcontroller! Tarisa kune chikamu "Kugonesa Serial paKutanga-up" pazasi.
MuSerial mode, LaserPING inogara ichitumira data nyowani yekuyera muASCII fomati. Hukoshi huchave mumamirimita, uye huchiteverwa nengoro yekudzosa hunhu (decimal 13). Kukosha kutsva kunozofambiswa pese apo sensor inowana kuverenga kwakakodzera, kazhinji kamwechete pamakumi mana neshanu ms.
| Serial Value | Condition |
| 50 kusvika 2000 | Chiyero chepamusoro chekururama mumamirimita |
| 1 kusvika 49 |
Yakaderedzwa kuyerwa kwechokwadi mumamirimita |
| 2001 kusvika 2046 | |
| 2047 | Reflection yakaonekwa kupfuura 2046 millimeters |
|
0 kana 2222 |
Kuyera kusiriko
(Hapana kuratidza; tarisisa padyo, kure, kana kusviba zvakanyanya) |
| 9998 | Yemukati sensor kukanganisa |
| 9999 | Yemukati sensor timeout |
Kumisa serial modhi uye kudzokera kune yakasarudzika PWM modhi:
- Isa pini yeSIG yakaderera, uye bata yakadzika kwe100 ms
- Sunungura pini yeSIG (kazhinji isa pini yako yeI/O iyo yakabatana neSIG kudzokera kune yakakwira-impedance yekuisa maitiro)
- LaserPING ichave ikozvino muPWM modhi
Kugonesa Serial paKutanga-up
Iwo maviri SMT pads akaiswa DBG uye SCK anogona kupfupikiswa pamwe chete kuti achinje default data modhi, ichigonesa serial modhi pakutanga-up. Iyo LaserPING module inotarisa mamiriro eDBG/SCK pini pakusimba-kumusoro.
- DBG uye SCK yakavhurika = Default kuPWM modhi (factory default mode)
- DBG uye SCK zvakapfupikiswa pamwechete = Default kune Serial Data Mode
Kupfupisa mapini maviri, 0402 resistor <4 k-ohm, zero ohm link, kana solder blob inogona kutengeswa pamapads. Ona SMT Test Pad Tsananguro pazasi kuti uwane ruzivo pane aya mapadhi. Mune serial mode paunotanga, sensor inotora anenge zana ms kutanga, mushure mezvo iyo LaserPING inozotanga kutumira serial ASCII kukosha pa100 baud kuSIG pini. Dhata ichasvika mune inoenderera CR (decimal 9600) yakamiswa ASCII serial stream, nekuverenga kutsva kwega kwega kunosvika anenge makumi mana neshanu ega ega. Iyi 13 ms kupindirana ichasiyana zvishoma, sekuenderana nenhambwe yakayerwa, nguva inodiwa kuti sensor ione, kuverenga uye kugadzirisa iyo data ichasiyanawo zvishoma.
Maximum Rang Distance uye Kururama Kwemavara
Tafura iri pazasi inoratidza kurongeka kwakaringana kwechishandiso, iine data rakawanikwa nemudziyo unoshanda patembiricha yekamuri uye pasina girazi rekuvhara pachishandiso. Mudziyo unogona kushanda kunze kwezvikamu izvi pamwe nekuderedzwa kwechokwadi.
| Target Reflectance Kuvhara Munda Wakazara we View (FoV) | Range Akarurama | ||
| 50 kusvika 100 mm | 100 kusvika 1500 mm | 1500 kusvika 2000 mm | |
| White Target (90%) | +/- 15% | +/- 7% | +/- 7% |
| Grey Target (18%) | +/- 15% | +/- 7% | +/- 10% |
Munda we View (FoV) uye Munda weIllumination (FoI)
Iyo emitter uye inogamuchira zvinhu zve laser sensor inoumba chimiro chekoni. Iyo emitter munda wekuvhenekera (FoI) i23 °, uye inogamuchira ndima yekuona (FoV) i55 °. Iyo LaserPING sensor inongonzwa zvinhu mukati meFoI, asi inogona kunge yakadzikisa kunzwisiswa kana zvinhu zvinopenya zviri mukati meFoV. Kuverenga kunogonawo kunge kusina kurongeka kana magirazi enzvimbo mukati meFoI achiparadzira mwenje kune zvimwe zvinhu mukati meFoI kana FoV.
Pakuyera marefu marefu sensor inofanira kunge iri kure zvakakwana kubva kune chero akapoteredzwa pasi, madziro kana matenga kuti ave nechokwadi chekuti haave chinangwa chisina chinangwa, mukati meFoI. Pa 200 cm kubva paLaserPING module, iyo FoI ndeye 81.4 cm dhayamita disk. Kukwidziridzwa pamusoro penzvimbo kunogona kukanganisa maitiro ekuona, sezvo mamwe maficha achiratidzira kwete kutsauka:
Pin Tsanangudzo
| Pin | Type | Function |
| GND | Ground | Common Ground (0 V kupa) |
| VIN | Simba | Iyo module ichashanda pakati pe3.3V kusvika 5V DC. The VIN voltage zvakare inoisa iyo logic-yepamusoro level voltage yeSIG pini. |
| SIG | I/O* | PWM kana Serial data kupinza / kubuda |
* Kana iri muPWM modhi, pini yeSIG inoshanda seyakavhurika muunganidzi yekupinda, ine 55 k-ohm yekudhonza-pasi resistor, kunze kwekupindura pulses, iyo inofambiswa kuVIN. Kana iri mu serial modhi, pini yeSIG inoshanda senge push-pull inobuda.
Kupera-mushandisi kuwana kweye test pads, kunze kwekuchinja iyo default mode pakutanga kubva kuPWM kuenda kuSerial, haitsigirwe.
| Pad | Type | Function |
| DBG | Vhura muunganidzi | Coprocessor programming pini (PC1) |
| SCK | Vhura muunganidzi | Coprocessor programming pini (PB5) |
| SCL | Vhura muunganidzi | Laser sensor I2C wachi ine 3.9K kudhonza-kukwira ku3V |
| RESET | Vhura muunganidzi | Coprocessor programming pini (PC6) |
| SDA | Vhura muunganidzi | Laser sensor I2C serial data ine 3.9K kudhonza-kusvika ku3V |
| MOSI | Vhura muunganidzi | Coprocessor programming pini (PB3) |
| INTD | Push Dhonza (inoshanda yakaderera) | Laser sensor Data Yakagadzirira Kuvhiringidza
Kazhinji logic yakakwirira, pini iyi inotyaira yakaderera kana kukosha kutsva kuripo, uye inodzokera kumusoro kana kukosha kwaverengwa. |
| MISO | Vhura muunganidzi | Coprocessor programming pini (PB4) |
Fukidza Girazi Sarudzo Yekutungamira
Iyo LaserPING module ine gomba rekukwira rakamisikidzwa kuti rirerudze kukwana yesarudzo yekuvhara girazi. Izvi zvinogona kushandiswa kuchengetedza sensor mune mamwe maapplication, kana kuyedza nekukanganisa kwezvinhu zvakasiyana zvinoshanda semafirita pane infrared laser mwenje. Kuti uwane kuita kwakanyanya, iyo inotevera mitemo inofanirwa kutariswa kune yekuvhara girazi:
- Material: PMMA, Acrylic
- Spectral transmittance: T< 5% ye λ< 770 nm, T> 90% ye λ > 820 nm
- Mhepo gap: 100 μm
- Ukobvu: <1mm (iyo yakaonda, iri nani)
- Dimensions: yakakura kupfuura 6 x 8 mm
PCB Dimensions
Revision History
Shanduro 1.0: yekutanga kuburitswa. Yakatorwa kubva Arrow.com.
Zvinyorwa / Zvishandiso
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PARALLAX INC 28041 LaserPING Rangefinder Module [pdf] Bhuku reMushandisi 28041, LaserPING Rangefinder Module, 28041 LaserPING Rangefinder Module, Rangefinder Module, Module |
