| 摘要 |
FIELD: electric engineering, in particular, automatic remote testing of signal lamps and indicating lamps of vehicles. SUBSTANCE: device has two commutators N+1 light-emitting indicators (where N is number of tested signal lamps), request frequency setter, two OR gates, N current sensors, N voltage sensors, pulse counter, frequency divider, 2N+2 univibrators, three AND gates, NOT gate, XOR gate. indicators are designed as light-emitting diodes which color is controlled. Device provides indication of three states of signal lamp using one point light-emitting diode which color is controlled, due to use its active states: continuous green light (ON, operating), continuous yellow light (OFF, operating), and discontinuous red light (not operating). Design of device also results in possibility to check its own operating order by means of additional N+1 light-emitting indicator. EFFECT: decreased adverse influence of testing device on service life of signal lamps and their power supply circuits, increased functional capabilities and increased reliability. |
