Yuav Ua Li Cas Txuas Lub Koob Yees Duab PTZ rau Joystick Siv Serial Control - RS232, RS422, RS485?

Txhawm rau txuas lub koob yees duab PTZ mus rau lub joystick ntawm kev tswj hwm (RS232, RS422, RS485), koj tuaj yeem ua raws li cov kauj ruam no:

1. Txiav txim siab qhov kev sib txuas lus

RS232: Kev sib txuas lus luv luv, feem ntau tsis tshaj 15 meters. Haum rau kev sib txuas ncaj qha ntawm ib qho khoom siv.
RS422: Txhawb kev sib txuas lus ntev dua (kwv yees li 1200 meters) thiab txhawb nqa ntau yam khoom sib txuas (kev sib txuas lus puv-duplex).
RS485: Txhawb kev sib txuas lus ntev (kwv yees li 1200 meters) thiab ntau lub cuab yeej (txog 32 cov khoom siv) sib koom tsheb npav, feem ntau yog siv rau kev sib txuas lus ib nrab-duplex rau kev tswj ntau lub cuab yeej.

2. Txheeb xyuas qhov chaw nres nkoj ntaus ntawv

PTZ lub koob yees duab: Txheeb xyuas qhov chaw sib txuas lus ntawm lub koob yees duab kom paub meej tias nws siv RS232, RS422 lossis RS485 interface, thiab xyuas cov pinout.
Joystick maub los: Txheeb xyuas qhov chaw nres nkoj serial ntawm lub joystick kom ntseeg tau tias kev sib raug zoo nrog qhov chaw nres nkoj ntawm lub koob yees duab.

3. Npaj cov cables thiab converters tsim nyog

Npaj ib tug haum serial kev sib txuas lus cable raws li lub interface hom. Yog hais tias lub interfaces ntawm lub koob yees duab thiab joystick tsis sib xws (piv txwv li, lub koob yees duab yog RS485 thiab lub joystick yog RS232), koj yuav tsum tau siv ib tug RS232 rau RS485 los yog RS422 converter.
Yog tias qhov kev ncua deb ntev, nws raug nquahu kom siv RS422 lossis RS485 interfaces vim tias lawv tsim nyog rau kev sib kis mus ntev.

4. Txuas cov khoom siv

Kev sib txuas RS232: Siv tus qauv RS232 serial cable los txuas ncaj qha rau lub koob yees duab thiab joystick. Yog hais tias nws yog ib qho khoom siv hauv tsev, nco ntsoov txuas RX (tau txais) thiab TX (xa tawm) pins thiab hauv av xaim.
RS422 lossis RS485 kev sib txuas: Cov kev sib txuas no siv cov teeb liab sib txawv, thiab cov kab sib txuas A / B yuav tsum tau txuas kom raug. RS422 yog tag nrho-duplex, yog li muaj cov kab xa tawm thiab tau txais cov kab, thaum RS485 yog ib nrab-duplex, thiab cov kab xa tawm thiab tau txais tau sib koom.
Terminal resistor: Yog tias siv RS422 lossis RS485 thiab qhov kev sib txuas lus ntev ntev, koj yuav tsum tau ntxiv 120 ohm davhlau ya nyob twg resistors ntawm ob qho kawg ntawm lub tsheb npav kom txo cov teeb liab kev xav.

5. Configure kev sib txuas lus tsis

Xyuas kom tseeb tias baud tus nqi, cov ntaub ntawv me ntsis, nres me ntsis, thiab parity me ntsis nqis ntawm PTZ lub koob yees duab thiab joystick zoo ib yam. Feem ntau baud tus nqi yog teem rau 2400, 4800, los yog 9600bps, cov ntaub ntawv me ntsis yog 8 ntsis, qhov nres me ntsis yog 1 ntsis, thiab tsis muaj parity me ntsis.
Cov kev teeb tsa no tuaj yeem hloov kho los ntawm lub joystick lossis lub koob yees duab ntawv qhia zaub mov.

6. Ntsuas qhov kev sib txuas

Tig lub koob yees duab PTZ thiab joystick, thiab sim tswj lub koob yees duab lub lauj kaub, qaij, thiab lwm yam haujlwm los ntawm lub joystick.
Yog tias koj tswj tsis tau nws ib txwm, xyuas seb cov xaim puas yog, seb qhov kev sib txuas lus tsis sib haum, lossis siv qhov chaw nres nkoj debugging cuab yeej los saib xyuas cov teeb liab kis.

7. daws teeb meem ntau

Tswj tsis tau lub koob yees duab: Xyuas seb qhov chaw nres nkoj tsis sib xws thiab seb lub cable txuas puas raug.
Teeb liab cuam tshuam lossis poob: Yog tias siv RS422 lossis RS485, xyuas kom meej tias cov kab ntev yog qhov tsim nyog thiab siv cov khoom siv davhlau ya nyob twg.
Kev tswj ntau lub koob yees duab: Rau RS485, koj tuaj yeem tswj ntau lub koob yees duab tib lub sijhawm los ntawm chaw nyob. Xyuas kom tseeb tias qhov chaw nyob ntawm txhua lub koob yees duab txawv.

8. Programming tswj

Yog tias koj siv lub khoos phis tawj los tswj lub koob yees duab PTZ, koj tuaj yeem tsim nws los ntawm kev sib txuas lus sib txuas (xws li Pelco-D lossis Pelco-P) kom ua tiav kev tswj tsis siv neeg.

Los ntawm cov kauj ruam no, koj tuaj yeem ua tiav txuas lub koob yees duab PTZ thiab joystick thiab siv kev tswj xyuas kom raug tswj lub koob yees duab.

How to Connect a PTZ Camera to a Joystick Using Serial Control - RS232 RS422 RS485USB to RS485 converter USB to RS232 converter USB to RS422 converter USB to TTL converter