1. The breast pump system comprising a solenoid valve (8), a source (14) power supply, configured to supply electrical energy to the solenoid valve to enable it to move between a first and a second position, a controller (24) configured to detect a change in inductance of the solenoid the valve (8), which indicates that the solenoid valve is moved from the first to the second position irezistor (15, 16) which is connected in series with the solenoid valve (8) and a source (14) supply, wherein the controller (24) is adapted to detect the voltage across the resistor when the resistor is connected to a reference voltage or ground, or to detect the tension in node (19) between the solenoid valve (8) and a resistor (15, 16) when the resistor is connected to zazemleniem.2. breast pump system according to Claim. 1, wherein the controller (24) configured to detect a change in inductance by detecting a deviation from the normal profile of current flowing through the solenoid valve (8) .3. breast pump system of claim. 2, wherein the solenoid valve (8) comprises first and second terminals, the first terminal is connected to a source (14) power, and a second terminal connected to the resistor (15, 16) .4. breast pump system of claim. 3, further comprising an amplifier (22) connected with the resistor, wherein the amplifier is configured to amplify the voltage detected at rezistore.5. breast pump system of claim. 4, further comprising a controller (18) pulse-width modulation adapted to switch the current through a solenoid valve (8) according to the control circuit pulse-width modulation, wherein the amplifier (22) skonfigu1. Система молокоотсоса, содержащая соленоидный клапан (8)источник (14) питания, выполненный с возможностью подавать электрическую энергию соленоидному клапану для предоставления ему возможности перемещаться между первым и вторым положениемконтроллер (24), сконфигурированный, чтобы обнаруживать изменение в индуктивности соленоидного клапана (8), которое указыв
