$ cat file
* About to connect() to 192.168.111.23 port 8080 (#0)
* Trying 192.168.111.23... connected
* Connected to 192.168.111.23 (192.168.111.23) port 8080 (#0)
> GET /sensor/52f5c63cc4221fbbedcb499908a0a823?version=1.0&interval=minute&unit=watt&callback=realtime HTTP/1.1
> User-Agent: curl/7.19.7 (i486-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: 192.168.111.23:8080
> Accept: */*
>
< HTTP/1.1 200 OK
< Connection: close
< Transfer-Encoding: chunked
< Content-Type: application/json
<
realtime([[1390215660,1110],[1390215661,1113],[1390215662,1109],[1390215663,1113],[1390215664,1114],[1390215665,1120],[1390215666,1120],[1390215667,1118],[1390215668,1121],[1390215669,1120],[1390215670,1117],[1390215671,1122],[1390215672,1114],[1390215673,1105],[1390215674,1111],[1390215675,1106],[1390215676,1111],[1390215677,1118],[1390215678,1117],[1390215679,1116],[1390215680,1108],[1390215681,1106],[1390215682,1112],[1390215683,1106],[1390215684,1114],[1390215685,1112],[1390215686,1109],[1390215687,1106],[1390215688,1109],[1390215689,1111],[1390215690,1105],[1390215691,1114],[1390215692,1111],[1390215693,1108],[1390215694,1113],[1390215695,1106],[1390215696,1102],[1390215697,1117],[1390215698,1107],[1390215699,1104],[1390215700,1108],[1390215701,1109],[1390215702,1111],[1390215703,1112],[1390215704,1110],[1390215705,1105],[1390215706,1109],[1390215707,1109],[1390215708,1107],[1390215709,1114],[1390215710,1110],[1390215711,1107],[1390215712,1110],[1390215713,1121],[1390215714,1111],[1390215715,1107],[13902* Closing connection #0
15716,1113],[1390215717,1111],[1390215718,1104],[1390215719,1111]]);

$ awk '/^realtime\(/,/\)/{gsub(/[\[\]\(\);]|[[:alpha:]]/,x);for(i=1;i<=NF;i+=2)print $i,$(i+1)}' FS=, file

$ awk '/^realtime\(/,/\)/{gsub(/[\[\]\(\);]|[[:alpha:]]/,x);for(i=1;i<=NF;i+=2)if(!A[$i+0]++)print $i,$(i+1)}' FS=,  file

1390215660 1110
1390215661 1113
1390215662 1109
1390215663 1113
1390215664 1114
1390215665 1120
1390215666 1120
1390215667 1118
1390215668 1121
1390215669 1120
1390215670 1117
....
....