diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/tcp_json_srv.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/tcp_json_srv.c
index ff5114e..fbb983e 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/tcp_json_srv.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/tcp_json_srv.c
@@ -947,7 +947,11 @@ static int format_sensor_json(char *buf, uint16_t buf_size, const LUP_SensorRepo
         uint32_t misc_val;
 
         switch (cs->misc_type) {
-            case 0: misc_field = "\"passtime_ms5\""; misc_val = cs->misc.passtime_ms5; break;
+            case 0:
+                // car_state=0(无车)→通过时间, car_state=1(有车)→车间距
+                misc_field = cs->car_state ? "\"gap_ms5\"" : "\"passtime_ms5\"";
+                misc_val = cs->misc.passtime_ms5;
+                break;
             case 1: misc_field = "\"cut_amount\"";   misc_val = cs->misc.cut_amount;   break;
             case 2: misc_field = "\"flow_amount\"";  misc_val = cs->misc.flow_amount;  break;
             case 3: misc_field = "\"relay_count\"";  misc_val = cs->misc.relay_count;  break;