World?s longest sea-crossing bridge opens operations in emerging ?Chinese Silicon Valley? region

• Landmark infrastructure project equipped with video cameras, intrusion alarms, public address and voice evacuation systems
• Bosch installs almost 8,000 speakers, over 260 amplifiers, and more than 2,000 high-definition video cameras across the vital infrastructure
• Customized solutions accommodate regional differences in technology and language between Zhuhai, Hong Kong, and Macao

The Hong Kong-Zhuhai-Macao Bridge relies on customized security solutions from Bosch to ensure safe operations. The world?s largest sea-crossing bridge was opened by Chinese officials late October 2018.

Spanning 55 kilometres in length, the Hong Kong-Zhuhai-Macao Bridge directly connects Hong Kong to Macao and then to the Chinese city of Zhuhai for the first time. At a total cost of USD 20 billion, it is a major boost for China?s Greater Bay Area, an emerging industrial and technological hotbed that is home to 68 million people and a showcase project for Bosch Building Technologies.

The large-scale project was built over the course of eight years using 400,000 tons of steel and includes underwater tunnels and two artificial islands that serve as customs ports. Ensuring the security of these two islands, where drivers need to present special permits to use the new bridge and pass customs checkpoints, was a priority from the start.

Securing vital infrastructure

With a proven track record of equipping critical infrastructures such as airports, hotels, commercial buildings and underground metros, Bosch Building Technologies won the contract to provide the artificial islands with video surveillance, intrusion alarms, as well as public address and voice evacuation systems.

On the island between Zhuhai and Macao, the Bosch partner Shanghai SAGA Electronic Technology Co., Ltd. installed more than 5,700 Bosch loudspeakers and over 260 amplifiers which are all managed via the PRAESIDEO Digital Public Address and Emergency Sound system.

Fulfilling a key customer request, the installation incorporates 15 different models of ceiling, wall mount, and line array speakers to blend in with the facility?s modern interior. Furthermore, Bosch was able to match Macao?s local standards by custom-ordering solutions with British power cord, programmed with graphic interfaces in traditional Chinese lettering.

On the island outside of Hong Kong, which is home to a customs clearance port, Bosch partner Pro-United Co., Ltd. installed 2,200 public address speakers of various models, including outdoor speakers for the travel inspection building.

Experts also adjusted 200 vari-directional array loudspeakers to balance sound variations from different building materials.

?The Bosch technical team and partners used professional software to simulate the sound pressure level of a specific area and comprehensively simulate the entire project to ensure that the selected products can meet the requirements of different areas in the actual application,? said Lin Lizhi, Bosch Building Technologies.

A landmark project

Bosch also covered the island with more than 2,000 HD cameras including the FLEXIDOME, DINION, and AUTODOME series. Monitored from a security control center on the Hong Kong-side of the island, these cameras support 24/7 surveillance of the customs clearance port, travel inspection building, Immigration Department and Hong Kong Customs Office.

The PRAESIDEO systems on both islands enable security staff to broadcast live voice announcements via security call points, while multiple sets of intrusion alarm systems protect personnel and property.

?We added the supporting intelligent call station PRAESIDEO, which is usually used for airport projects, in order to ensure that the staff can directly perform voice broadcasts throughout the call station during operation, thus making the security management more convenient,? said Wang Yiping, Deputy General Manager of Shanghai SAGA Electronic Technology Co., Ltd.

The high-profile infrastructure project highlights the flexibility and broad customization options offered by Bosch Building Technologies as a one-stop solutions provider.

Now that it is fully operational, the Hong Kong-Zhuhai-Macao Bridge is already considered a key asset in the Greater Bay Area, also known as ?China?s Silicon Valley?. The bridge reduces the travel time between Zhuhai and Hong Kong from four hours to a mere 30 minutes.

It also creates a new gateway for travellers between vital transportation hubs such as Shenzhen and Hong Kong airports with while the integrated Bosch security solutions ensuring a safe passage.