SOLENOID VALVE CONTROL METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC H01F7/18 

FIELD: engineering.

SUBSTANCE: invention can be used to control solenoid valves (SV), expand the functionality by increasing the supply voltage of SV and reduce hardware delays. To control the SV, a half-bridge control scheme is used, the features of which affect the properties of the proposed method. When the SV is turned on, a single voltage measurement is carried out at the upper terminal of the electromagnet (EM) winding and the first and second threshold voltage values are set at the upper terminal of the EM winding. If the value of the measured voltage is higher than the first threshold value, the voltage is monitored at the upper output of the EM winding and when the local maximum voltage at the upper output of the EM winding exceeds the second threshold value, the moment of reaching the end position by the EM armature upon release is determined. To implement the proposed method, a functional diagram of the device is proposed, the construction feature of which is that its main part, which provides the processing of current measurement signals in the valve solenoid winding and the formation of control signals, is made using the microcontroller and its internal peripheral modules. A voltage meter is introduced into the device, after processing the signal from the output of which SV control signals are formed. The operability and efficiency of the proposed technical solution have been confirmed experimentally. This solution makes it possible to provide with high reliability the exact value of the time when the SV is on, especially when it is required to minimize it and the delay at the beginning of its opening. In addition, it allows controlling the activation and release of the SV, and also creates the opportunity to measure the duration of its operation and release.

EFFECT: requirements for the applied hardware are reduced without reducing the quality of SV control and monitoring of its condition.

8 cl, 14 dwg, 7 tbl