so i reply my self.
i uncomment the following lines in evok.conf
[SENSOR_1] ; onewire thermometer
bus = 1 ; link to OWBUS_X
address = 28FF449D711604A1
type = DS18B20
interval = 1
so, you can see the intervall is reduce to 1s.
{"interval": 1, "value": 22.55, "circuit": "1", "address": "28FF449D711604A1", "time": 1494087547.135313, "typ": "DS18B20", "lost": false, "dev": "temp"}
cu daniel