add and find by id for cam_dev

xuxiuxi

2019-03-04 845c62691a5b19faf67775f712f294fa0d1789f6

 QiaoJiaSystem/RapidStructureApp/TriggerElement.h

@@ -29,6 +29,8 @@

    bool getTriggerState() const;

    void resetTriggerState();

private:
    bool state;
    bool triggerState;