Iyi purojekiti inotsanangura kuti mota yeDC inogona kufambiswa sei kumberi kana kudzoka kumashure uchishandisa TV kana DVD kure kudzora.Chinangwa ndechekugadzira yakapusa bi-directional mota mutyairi anoshandisa modulated infrared (IR) 38kHz pulse chitima chechinangwa pasina kushandisa chero microcontroller kana programming.

Mufananidzo wemunyori unoratidzwa mumufananidzo 1.

Denderedzwa uye kushanda

Circuit diagram yepurojekiti inoratidzwa muFig. 2. Yakavakwa yakapoteredza IR receiver module TSOP1738 (IRRX1), decade counter 4017B (IC2), motor driver L293D (IC3), PNP transistor BC557 (T1), maviri BC547 NPN transistors ( T2 uye T3), 5V yakadzora magetsi ekupa (IC1), uye 9V bhatiri.

Bhatiri re9V rakabatana kuburikidza ne diode D1 kune voltage regulator 7805 kugadzira 5V DC inodiwa purojekiti.Capacitor C2 (100µF, 16V) inoshandiswa kuramba ripple.

Pasi pemamiriro akajairwa, pini inoburitsa 3 yeIR module IRRX1 iri pa logic yakakwira, zvinoreva kuti transistor T1 yakabatana nayo yakagurwa-uye saka muunganidzi wayo ari pazasi.Muunganidzi weT1 anotyaira wachi yemakore gumi counter IC2.

Pakunongedza kure kune IR module uye nekudzvanya chero kiyi, module inogamuchira iyo 38kHz IR pulses kubva kure kure control.Aya mapurusi anopinzwa pamuunganidzi weT1 uye akapihwa wachi yekuisa pini 14 yemakore gumi counter IC2.

Iyo inosvika IR pulses inowedzera makore gumi nechiyero chimwe chete (38kHz) asi nekuda kwekuvapo kweRC sefa (R2=150k uye C3=1µF) pawachi yekuisa pini 14 yeIC2, chitima chepulses chinoratidzika sepuruzi imwe chete pa. pakaunda.Saka, pakudzvanya kiyi yega yega, kaunda inoenda mberi nekuverenga kumwe chete.

Kana kiyi yeremote yaburitswa, capacitor C3 inoburitsa kuburikidza neresistor R2 uye mutsara wewachi unova zero.Saka pese mushandisi paanodzvanya nekuburitsa kiyi iri kure, kaunda inogamuchira kamwe chete kupuruzira pawachi yayo yekuisa uye LED1 inopenya kuratidza kuti pulse yagamuchirwa.

Panguva yekushanda panogona kuve neshanu mikana:

Nyaya 1

Kana kiyi yeremote ichidzvanywa, yekutanga kupuruzira inosvika uye iyo O0 inobuda yemakore gumi counter (IC2) inokwira apo mapini O1 kuburikidza neO9 akadzikira, zvinoreva kuti transistors T2 neT3 vari munzvimbo yakachekwa.Vanounganidza ese ari maviri transistors anodhonzwa kunzvimbo yakakwirira ne1-kilo-ohm resistors (R4 neR6), saka ese ari maviri materminal ekuisa IN1 uye IN2 yemutyairi wemota L293D (IC3) anokwira.Panguva ino, mota iri kunze kwenyika.

Nyaya 2

Kana kiyi ikadzvanywa zvakare, iyo yechipiri pulse inosvika paCLK line inowedzera counter neimwe.Ndiko kuti, kana yechipiri pulse yasvika, O1 kubuda kweIC2 kunokwira, nepo zvakasara zvinobuda zvakaderera.Saka, transistor T2 inoitisa uye T3 inotemwa.Zvinoreva kuti voltage pamuunganidzi weT2 inodzikira (IN1 yeIC3) uye voltage pamuunganidzi weT3 inokwira (IN2 yeIC3) uye zvinopinda IN1 neIN2 yemutyairi wemotor IC3 inove 0 uye 1, zvichiteerana.Mumamiriro ezvinhu aya, motokari inotenderera ichienda mberi.

Case 3

Kana kiyi ikadzvanywa zvakare, iyo yechitatu pulse inosvika paCLK line inowedzera counter neimwe zvakare.Saka O2 kubuda kweIC2 kunokwira.Sezvo pasina chinhu chakabatana neO2 pini uye mapini ekubuda O1 uye O3 akadzikira, saka ese ari maviri transistors T2 uye T3 anoenda kune yakachekwa-yemamiriro ezvinhu.

Vanounganidza zviteshi zvema transistors ese anodhonzwa kunzvimbo yakakwirira ne1-kilo-ohm resistors R4 neR6, zvinoreva kuti materminal ekuisa IN1 uye IN2 yeIC3 anokwira.Panguva ino, mota iri zvakare mu off state.

Case 4

Kana kiyi ikadzvanywa zvakare, puruzi yechina ichisvika paCLK line inowedzera counter neimwe kechina.Ikozvino O3 inobuda yeIC2 inokwira kumusoro, nepo zvakasara zvinobuda zvakaderera, saka transistor T3 inoitisa.Zvinoreva kuti voltage pamuunganidzi weT2 inokwira (IN1 yeIC3) uye voltage pamuunganidzi weT3 inodzika (IN2 yeIC3).Saka, zvinopinda IN1 uye IN2 zveIC3 zviri pa1 uye 0 mazinga, zvichiteerana.Mumamiriro ezvinhu aya, mota inotenderera ichidzokera kumashure.

Nyaya yechishanu

Kana kiyi ichidzvanywa kechishanu, kupuruzira kwechishanu kunosvika paCLK mutsara kunowedzera counter neimwe zvakare.Sezvo O4 (pini 10 yeIC2) ine waya kuSetazve pini yekupinda 15 yeIC2, kudzvanya kechishanu kunodzosa iyo gumi counter IC kusimba-on-reset mamiriro ane O0 yakakwira.

Nekudaro, dunhu rinoshanda sebi-directional mota mutyairi anodzorwa neine infrared remote control.

Kuvaka uye kuedza

Dunhu rinogona kuunganidzwa paVeroboard kana PCB iyo chaiyo-saizi marongero inoratidzwa muFig. 3. Mamiriro ezvikamu zvePCB anoratidzwa mumufananidzo 4.

Dhawunirodha PCB uye Chikamu dhizaini maPDF:tinya pano

Mushure mekuunganidza dunhu, batanidza 9V bhatiri kuyambuka BATT.1.Tumira tafura yeChokwadi (Table 1) yekushanda uye tevera matanho anotsanangurwa muNyaya 1 kusvika Nyaya yechishanu pamusoro.

Yakarongedzwa naLisa