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精通无线监控技术的朋友请进。。。。

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安防幼儿园学生

Rank: 1

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2
发表于 2007-2-5 06:13:22 | 显示全部楼层

re:可以用微波,还可以是WIFI

可以用微波,还可以是WIFI
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安防偶像

夜视设备 www.nvoe.com

Rank: 7Rank: 7Rank: 7

积分
2221
发表于 2007-2-5 07:22:32 | 显示全部楼层

re:1. 要看他的预算2。 让甲方把所有...

1. 要看他的预算
w; p" z9 N& z+ h. K, d2 y9 f* a' \2。 让甲方把所有的要求提出来再设计方案。
" D, t/ l2 p* ~( Y" U 3。 不能让甲方随心所欲的改方案。
! H( q8 k0 G2 c6 L4。 我们可以提供2.5M 的realtime数字图像,他有那么多的钱吗?
/ m( u2 F7 a' |" O& F- \; }3 C一定要有自己的完整方案,甲方很会赖皮的。我们去年吃亏大了去了。
1 o5 R; @% y3 Y7 v. o
夜视设备,特种设备
www.nvoe.com
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安防小学生

Rank: 2

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92
 楼主| 发表于 2007-2-6 21:57:35 | 显示全部楼层

re:我现在用的这种是29个波段的,我用的发射...

我现在用的这种是29个波段的,我用的发射机只能用其中的四个波段,13.15.17.19
4 T R0 l" o) `1 | a如果设备数量再多的话感觉做起来比较麻烦。
2 Y/ ~4 W: ~, I8 L8 M# B1 `6 ]另外还有个问题就是设备的室外放置问题,大部分接收设备不具备防水功能,而且只带一个大约10CM的天线,室外安装的话对防水造成了很大的困难。
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安防精英

Rank: 4

积分
521
发表于 2007-2-8 18:54:33 | 显示全部楼层

re:有经验的 上来说两句,我也想学学

有经验的 上来说两句,我也想学学
9 A0 y: `9 ]( l0 E
天津做工程,有什么经验大家交流,说不定你还有好的收获!!!lyanlong@126.com
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安防小学生

Rank: 2

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76
发表于 2007-2-8 21:18:59 | 显示全部楼层

re:只做过银行的远距离无线网络,监控无线产品...

只做过银行的远距离无线网络,监控无线产品没怎么接触过,关注中啊
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安防幼儿园学生

Rank: 1

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6
发表于 2007-2-10 01:31:38 | 显示全部楼层

re:5G 无线数字音视频传输模块介绍:...

5G 无线数字音视频传输模块介绍:
4 `7 R0 j8 ]5 M2 v7 @8 l
' u. H. P1 b M) V 1. Key Features
- X* M6 l& z: K6 w* {4 c: } h5 { 1) Complete transceiver design of wireless communication at 5 GHz.
$ ?! h: l# _. S: ~3 T 2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
7 u! e, i `6 t5 tdifferent country spectrum requirements.
2 O& k1 `" _ r: U5 L3) Dynamic frequency selection to resist interferences.
1 o2 s: w7 q& i3 Q. \ z- a4) Close-loop power control to minimize power consumption and be a friendly neighbor to
0 L3 K( j' q6 X7 j; s3 v- Cother WLAN networks at 5 GHz.
# }$ x) ?7 E. A' _8 Z0 z 5) Secure networking to assure privacy and content rights protection.
0 I6 m( M! \: Y4 ~$ Y, h0 k 6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4,
, I1 h" ?9 ^" r' ~, `% F+ _* g! v H.264 and VC-1 (WM-9).
7 D9 A! L- {9 q! o9 Z$ W! p 7) Supports point-to-point video connection with full QoS and point-to-multipoint video
2 J- w& E/ r, t4 ?& J ~broadcasting.
8 ?% ^" H6 l' O8 h/ J) ~3 q 8) Configurable expansion I/O connector enabling easy integration with existing host
9 P9 ]5 Q, V% B B systems.
$ C Z# d9 ?$ o* d% ^$ Y: F5 m# t- o9) HCI interface to the host CPU to enable flexible application development at the host level.
+ s+ ]9 d- s: M" a 10) Transmission of IR control signals to the video source devices from the TV location.
; c2 B( `# C3 a1 {+ B8 [' S2. System Diagram
0 e9 K5 v2 H( V" T, N6 dWAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
' R! w: T0 p+ k( W& A; S/ l) q! X transport stream (TS) communication. The WAV3000 is a complete wireless transceiver module
" T/ O( G9 D3 s! n that can be integrated as video sender and video receiver according to the host platform. When
% a' j! y' I5 Gused as video sender, WAV3000 can be embedded in a video source device (DVD, VCR, PVR,
! a r7 U$ x X+ o8 R# |# S' s STB, or PC); and when used as video receiver, WAV3000 can be embedded in a video display
3 g- r- }, h) W" U: Ddevice (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete,
+ X( D N, v0 N$ eglueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
4 h: M, Q3 a B, P1 [5 ?" f! D+ r QoS.
- {2 h4 p; F* v3 ^$ [# w The WAV3000 includes a configurable expansion connector (CEC). All I/O signals can be
7 v c) t6 m6 v1 a5 ?7 u: e! v routed and configured through the CEC enabling easy integration with existing host systems.
4 w# z& [0 u: m ^Figure 1 gives a functional block diagram of the WAV3000 and associated personality
5 r2 P9 D! M6 L! [, \0 u3 q module (PM). The personality module intends to simulate the host product platform in which the
( }7 |8 k7 ]0 w: J: GWAV3000 will be integrated. The PM supports demo and evaluation of the WAV3000 with a
! s0 Q- `/ R+ I4 D1 D, Zvariety of video sources (analog and digital) for different applications. It also provides
, D& H3 }) j" m4 Y* l# I9 v# h% scapabilities for test and debugging of the core module.
0 |. J; o7 r% ^6 c, f' }3 Functional Specifications
The WAV3000 supports standard MPEG Transport Stream input and output in either
& E1 Y' E" e4 S' ZParallel or Serial mode.
The Tx unit transmits the compressed MPEG TS signal to the Rx unit over the air, using the
- B" R+ a/ R+ |; hWiViTM wireless networking technology at 5 GHz.
Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
p- F' ^9 l: ^ g: h& g2 ndifferent country spectrum requirements.
The system support data rates from 6 Mbps to 60 Mbps.
The system supports video bit rates from 3 Mbps to 45 Mbps.
Proprietary radio resource control with dynamic frequency selection (DFS) and close-loop
: ~. M6 ` g6 ?, Ipower control (CLPC).
Overall video propagation delay of less than 30 ms.
Receive sensitivity is –86 dBm for video rate of 6 Mbps, and –78 dBm for video rate of 20
7 o! N+ h: Y' I5 I9 ]4 o! I9 a1 P iMbps.
; Y g+ s; e7 k8 f: S7 K 4 System Security
% r& C+ T* P* [# Q, }' D8 K2 j The communication is authenticated and the media stream is encrypted to assure for
{6 c. R* C& m. S$ z% C" p: Dprotection of copyrighted material. Flexible pairing procedure between each Tx Unit and Rx Unit
" e& k$ n7 x8 }0 Y* }* w5 C$ zensures private communications between each pair of units. This also allow for coexistence of
# L+ S) r! v) c. l1 o; }multiple pairs of simultaneous operations without cross talk.
. ~) Q Y$ l" B b) Y 此主题相关图片
( V1 j. O0 F: @& p2 W9 ^) U
- p a; B* ~! S0 f* O {+ }% N <
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安防中学生

Rank: 2

积分
115
QQ
发表于 2007-2-13 17:39:07 | 显示全部楼层

re:楼上的能给翻译成中文吗?

楼上的能给翻译成中文吗?
QQ:455032008   
E-mail:455032008@163.com    ccgoodliu@gmail.com      http://goodluck168.b2b.youboy.com/
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安防中学生

Rank: 2

积分
138
QQ
发表于 2007-2-13 17:40:00 | 显示全部楼层

re:使用无线IP的是可以做的,用802.11...

使用无线IP的是可以做的,用802.11A,或802.11B,等,那些是可以实现的啊
. G; u$ c9 V/ c4 U 可以联系我啊QQ358537237
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安防大学生

Rank: 3Rank: 3

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263
QQ
发表于 2007-2-20 17:31:40 | 显示全部楼层

re:学习中

学习中
本人现在还是安防的小小虾,请各位大哥多多帮忙呀.学习学习在学习.
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安防幼儿园学生

Rank: 1

积分
24
QQ
发表于 2007-2-22 04:33:59 | 显示全部楼层

re:我也不清楚来学习

我也不清楚来学习
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