DEVICE FOR DETECTING AND SENDING INFORMATION OF AC VOLTAGE PRESENCE ON A CONDUCTOR

• Main Author: Marić, Josip
• Format: Patent
• Language: Croatian; English
• Published: 16.02.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

Uređaj za očitanje i slanje postojanja izmjeničnog napona na vodiču rješava tehnički problemi očitavanja statusa osigurača ili prekidača izmjenične struje (230V 50Hz) bez nazočnosti osobe kao i očitavanje postojanje napona na vodiču bez potrebe za prespajanjem kontaktnog voda osigurača ili prekidača, odnosno bez kontakta vodiča. Sastoji se od mikročipa (8) koji serijski intervalno prikuplja podatke s 8-stupanjskog registra statičkog pomaka (7) na kojega je spojen senzor (5), ili više njih te se ti podaci šalju protokolom zvanim serijsko periferno sučelje na Lora modul (9). Senzor (5) se sastoji od otpornika impendancije (2), invertera u obliku Schmittovog okidača (4) i preklopne diode (3), a detektira postojanje izmjeničnog napona na vodiču na kojeg je kapacitivno spojen na način da prisustvo izmjeničnog napona na vodiču kojeg se promatra. Dobiveni se signal pretvara inverterima u obliku Schmittovog okidača (4) koji mijenjaju svoje stanje, izravnaju napon, nakon čega se dobiven signal na izlazu drugog invertera u obliku Schmittovog okidača (10) dodatno filtrira uz pomoć preklopne diode (3) što omogućuje protok struje između ulaznog napona (11) i nultog napona (12) čime se omogućuje korištenje samo dva vodiča za napajanje i slanje informacije o postojanju izmjeničnog napona na promatranom vodiču.The device for detecting and sending information of AC voltage presence on a conductor solves the technical problem of detecting the status of fuses or switches of alternating current (230V 50Hz) without the presence of a person, as well as reading the existence of voltage on the conductor without the need to connect the contact wire of the fuse or switch, that is, without contacting the conductor. It comprises a microchip (8) that collects data serially at intervals from an 8-level static shift register (7) to which a sensor (5) is connected, or more of them, and these data are sent via a protocol called a serial peripheral interface to the Lora module (9). The sensor (5) comprises an impedance resistor (2), an inverter in the form of a Schmitt trigger (4) and a switching diode (3), and detects the presence of alternating voltage on the conductor to which it is capacitively connected in such a way that the presence of alternating voltage is detected on the conductor observed. The received signal is converted by Schmitt-trigger inverters (4) which change their state, straighten the voltage, after which the obtained signal at the output of another Schmitt trigger inverter (10) is additionally filtered with the help of a switching diode (3), which allows current to flow between input voltage (11) and zero voltage (12), which enables the use of only two conductors for power supply and sending information about the existence of alternating voltage on the observed conductor.