1. Doppler ultrasound device (100) to limit the exposure of the fetus by ultrasound, the device comprising: a block (103) estimates for the assessment of satisfactory acoustic coupling between the ultrasound transducer and the subject wearing the fetus, by using a sufficient amount of gel between the surface of the abdomen of the subject and the transducer an accumulating unit (105) for accumulating time period during which the ultrasound is emitted in the subject, based on the assessment, a first comparator (107) for comparing the accumulated n Heat-time with a reference time period, a detection unit (109) for detecting movement of the fetus from the reflected ultrasonic radiation, a counting unit (111) for counting the number of detected fetal movements a second comparator (113) for comparing the number counted fetal movements with a reference number unit ( 115) for making decision on the at least one solution based on at least one of the output result of the first comparator and the output result of the second comparator, wherein the control unit (115) decision decides with respect to at least one of the further operation of the device, the estimated state of health of the fetus and the actions recommended to a subject based on the comparison ipolzovatelsky interface (117) for communicating information to the subject on the basis of at least one resheniya.2. The apparatus according to claim. 1, the apparatus is adapted to operate when wearing on subekta.3 stomach. The apparatus of claim. 1, wherein the counting unit (111) for counting fetal movements exceeding a predetermined threshold value at least odnog1. Доплеровское ультразвуковое устройство (100) для ограничения облучения плода ультразвуком, при этом устройство содержит:блок (103) оценки для оценки удовлетворительного акустического контакта между ультразвуковым преобразователем и субъектом, носящим плод, путем использования достаточного количества геля между поверхностью живота субъекта и преобразователемна