diff --git a/arch/sim/src/sim/sim_camera.c b/arch/sim/src/sim/sim_camera.c
index 0d83d7a9864..48850eaf30d 100644
--- a/arch/sim/src/sim/sim_camera.c
+++ b/arch/sim/src/sim/sim_camera.c
@@ -26,6 +26,7 @@
 
 #include <errno.h>
 #include <string.h>
+#include <nuttx/wdog.h>
 #include <nuttx/video/imgsensor.h>
 #include <nuttx/video/imgdata.h>
 #include <nuttx/video/video.h>
@@ -37,6 +38,8 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
+#define SIM_CAMERA_PERIOD    MSEC2TICK(CONFIG_SIM_LOOP_INTERVAL)
+
 /****************************************************************************
  * Private Types
  ****************************************************************************/
@@ -51,6 +54,7 @@ typedef struct
   uint8_t  *next_buf;
   struct timeval *next_ts;
   struct host_video_dev_s *vdev;
+  struct wdog_s wdog;
 } sim_camera_priv_t;
 
 /****************************************************************************
@@ -345,22 +349,9 @@ static int sim_camera_data_stop_capture(struct imgdata_s *data)
   return host_video_stop_capture(priv->vdev);
 }
 
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-int sim_camera_initialize(void)
+static void sim_camera_interrupt(wdparm_t arg)
 {
-  sim_camera_priv_t *priv = &g_sim_camera_priv;
-
-  imgsensor_register(&priv->sensor);
-  imgdata_register(&priv->data);
-  return 0;
-}
-
-void sim_camera_loop(void)
-{
-  sim_camera_priv_t *priv = &g_sim_camera_priv;
+  sim_camera_priv_t *priv = (sim_camera_priv_t *)arg;
   struct timespec ts;
   struct timeval tv;
   int ret;
@@ -375,4 +366,21 @@ void sim_camera_loop(void)
           priv->capture_cb(0, ret, &tv, priv->capture_arg);
         }
     }
+
+  wd_start_next(&priv->wdog, SIM_CAMERA_PERIOD, sim_camera_interrupt, arg);
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int sim_camera_initialize(void)
+{
+  sim_camera_priv_t *priv = &g_sim_camera_priv;
+
+  imgsensor_register(&priv->sensor);
+  imgdata_register(&priv->data);
+
+  wd_start(&priv->wdog, 0, sim_camera_interrupt, (wdparm_t)priv);
+  return 0;
 }
diff --git a/arch/sim/src/sim/sim_initialize.c b/arch/sim/src/sim/sim_initialize.c
index eec77393ff8..14919e52abb 100644
--- a/arch/sim/src/sim/sim_initialize.c
+++ b/arch/sim/src/sim/sim_initialize.c
@@ -224,10 +224,6 @@ static int sim_loop_task(int argc, char **argv)
 
       sched_lock();
 
-#ifdef CONFIG_SIM_CAMERA
-      sim_camera_loop();
-#endif
-
 #ifdef CONFIG_SIM_USB_DEV
       sim_usbdev_loop();
 #endif
diff --git a/arch/sim/src/sim/sim_internal.h b/arch/sim/src/sim/sim_internal.h
index 105a6a3a5ba..aabe98bd91c 100644
--- a/arch/sim/src/sim/sim_internal.h
+++ b/arch/sim/src/sim/sim_internal.h
@@ -475,7 +475,6 @@ int sim_spi_uninitialize(struct spi_dev_s *dev);
 
 #ifdef CONFIG_SIM_CAMERA
 int sim_camera_initialize(void);
-void sim_camera_loop(void);
 #endif
 
 #ifdef CONFIG_SIM_VIDEO_DECODER