{
  "$type": "site.standard.document",
  "description": "A cart power supply device includes a power supply resonance circuit, a notification element, a current detection circuit, and a control circuit. The power supply resonance circuit includes a power supply coil that can be electromagnetically coupled to a power reception coil mounted on a shopping…",
  "path": "/patents/1295552",
  "publishedAt": "2021-07-15T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/12",
    "TOSHIBA TEC KABUSHIKI KAISHA"
  ],
  "textContent": "A cart power supply device includes a power supply resonance circuit, a notification element, a current detection circuit, and a control circuit. The power supply resonance circuit includes a power supply coil that can be electromagnetically coupled to a power reception coil mounted on a shopping cart or the like. The current detection circuit detects a current flowing through the power supply resonance circuit. The control circuit supplies an alternating current to the power supply resonance circuit at a first level and operates the notification element in a first mode when the detected current is less than a first threshold. The control circuit supplies the alternating current at a second level when the detected current is greater than the first threshold and operates the notification element in a second mode.",
  "title": "CART POWER SUPPLY DEVICE"
}