This video summarizes an experiment that showed a 39% decrease in crime and arrests with improved street lighting.
This is part of the Reducing Violence Across the United States 2021 panel series from the Niskanen Center, which highlights the best research on how to reduce violent crime with the goal of informing policy and practice to make our communities safer.
CIOs in municipal organizations may benefit from understanding the evolution of street and area
lighting technologies and standards.
This Guide may help CIOs and their teams collaborate on Smart City
initiatives with their organizational peers in Public Works and Engineering departments.
A qualitative and quantitative analysis of how using effective lighting design and advanced lighting solutions to reduce the energy costs and GHG footprint of lighting by a total of 25.5%
A growing body of scientific research suggests that light pollution can have lasting adverse effects on human health, and wildlife health, habitat, and migration.
CIOs in municipal organizations may benefit from understanding the evolution of street and area
lighting technologies and standards.
This Guide may help CIOs and their teams collaborate on Smart City
initiatives with their organizational peers in Public Works and Engineering departments.
A qualitative and quantitative analysis of how using effective lighting design and advanced lighting solutions to reduce the energy costs and GHG footprint of lighting by a total of 25.5%
A growing body of scientific research suggests that light pollution can have lasting adverse effects on human health, and wildlife health, habitat, and migration.
Feeling safe in public transport is essential for mobility, and fear of crime can be a larger problem for the individual than crime itself.
Among the most important characteristics affecting passengers’ safety are lighting, surveillance, other persons’ behaviour, time of day, and one’s own gender.
Creating safe spaces for railway and public transit facilitates increased use, which has follow-on socio-economic benefits for cities.
This 2016 paper by Adam Sedziwy and Leszek Kotulski is an essential for street lighting designers and engineers. The authors propose methodologies that drive savings by LED retrofit projects, advanced (aka Smart) lighting control and design, and operational & management cost savings available from advanced networked lighting systems.
We find evidence that communities that were assigned more lighting ex- perienced sizable reductions in crime. After accounting for potential spatial spillovers, we find that the provision of street lights led, at a minimum, to a 36 percent reduction in nighttime outdoor index crimes.
Tondo Smart Lighting also creates an open standards-based Smart City network for connecting sensors and other wireless and wired devices to Tondo's Cloud-IQ management platform.
This can reduce sensor and device deployment costs by 80% or more versus proprietary networks or individual cellular connections, with a 2.7x or greater benefit versus your LED retrofit project, and 3.5x over Smart Lighting alone.
Read more about the Business Case for Smart Lighting on this link.
Normally open(NO) and Normally closed (NC) are terms used to define the states that switches, sensors or relay contacts are under when they are not activated.
A NO contact or a normally open contact is the one that remains open until a certain condition is satisfied such as a button being pressed or some other manner of activation such as those based on temperature, pressure, etc.
A NC contact or normally closed contact is the exact opposite of NO contact by function. It remains closed until a certain condition is satisfied.
Lighting control cabinets typically control a group of street lights or advertising signage from a "control cabinet". These controls have historically provided on-off functionality based on the time of day using an "astronomical clock"-based switch or daylight photosensor. Lights are controlled in groups with no individual control over a specific light.
Although new controllers such as Tondo's Edge-IQ controller have replaced the cabinet-based approach with new technologies that include advanced dimming, remote cloud-control, and support for functionality including sensors and switches, there are many outdoor lights and signs that do not support on-lamp control. Tondo's Cabinet-IQ controller provides new advanced IoT technology support for existing cabinet-controlled lighting.
CAT-M/LTE-M and NB-IoT are similar but have differences that may make one suitable over another, or simply selected based on the support for one or the other that is available in your area.
NB-IoT uses a narrow bandwidth of 200 kHz, where CAT-M uses 1.4 MHz. The maximum data rate for NB-IoT is ~ 250 kb per second, with CAT-M1 reaching ~ 1 Mbps. CAT-M is marginally less energy efficient than NB-IoT. Although NB-IoT has a lower speed, both NB-IoT and CAT-M are suitable for sensor communications since sensors typically do not require much bandwidth.
Both NB-IoT and CAT-M1 are supported under the 5G technology specifications and therefore are ideal for selecting as a standard for sensor communications.
CAT-M wireless (aka LTE-M) is a low-power wide area network (LPWAN) cellular data transmission standard that operates over the data and physical layer. CAT-M was designed for IoT projects, with an average upload speed between 200 kbps and 400 kbps.
Eddystone is an open-source Bluetooth advertising protocol originally designed by Google. It can be used by mobile device applications to deliver improved proximity-based experiences that include applications such as Google Maps.
These packets can be discovered with any Bluetooth LE APIs such as Core Bluetooth on iOS, or android.bluetooth.le on Android. You can also use them with Google’s Nearby Messages API, which can be integrated into an iOS or Android app, and receive “messages” in those apps when a person enters or exits a range of beacons.
You can read more about it on github.com/google/eddystone.
Source: Polaris Market Research 2022
Source: US Department of Energy 2015 U.S. Lighting Market Characterization, issued November 2018
Tondo's 2022 estimate was calculated for each lighting category by applying market growth factors for each lighting category between 2015 and 2021 based on U.S. Census data to the DOE dataset.
The original Excel data set can be downloaded here.
A RESTful API is an architectural style for an application program interface (API) that uses HTTP requests to access and use data.
The API spells out the proper way for a developer to write a program requesting services from an operating system or other application.
You can read more from the source of this definition at TechTarget here.
A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks.
IP stands for "ingress protection". For IP67, this means:
"6" describes protection of solid particles: No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow.
"7" describes the protection from water: Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion). Test duration: 30 minutes.
Modbus is a data communications protocol originally published in 1979. Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting and communicating with industrial electronic devices.
Read more about MODBUS here.
RS-485, also known as TIA-485(-A) or EIA-485, is a serial communications standard.
Electrical signalling is balanced, and multipoint systems are supported. Digital communications networks implementing the standard can be used effectively over long distances and in electrically noisy environments.
4G devices will work on 4G LTE networks and the earlier cellular technologies, including 3G, EGPRS, and 2G.
Smart city sensors require very little bandwidth, and 3G EGPRS and 4G LTE can easily support the required data rates.
5G networks are relatively new, and most 5G deployments use a combination of 4G and 5G networks.
DALI-2 refers to the latest version of the DALI protocol. While DALI version 1 only included control gear, DALI-2 includes control devices such as application controllers and input devices (e.g. sensors), as well as bus power supplies.
Read more at the DALI Alliance website: Compare DALI v1 vs DALI v2
Zhaga Book 18 describes a smart interface between outdoor luminaires and sensing/ communication nodes.
Zhaga Book 18 allows any certified node to operate with any certified luminaire. Certified luminaires and sensing / communication modules are available from multiple suppliers, establishing an ecosystem of compatible products.
The NEMA ANSI C137.4-2021 builds on the NEMA C137.41 7-pin connector standard and the DALI communication protocol. It has additional characteristics and features that align very closely with the D4i family of specifications from the DALI Alliance.
D4i and ANSI C137.4-2021 specify the digital communication between luminaires and devices including sensors and network lighting controllers. The expanded ANSI C137.4-2021 now includes energy reporting data and diagnostics and maintenance data.
The NEMA ANSI C137.10 standard specifies roadway and area lighting equipment connector compatibility. The 3-pin standard does not provide for dimming control, but provides for on/off operation. The later standard C137.41 adds dimming control (5- and 7-pin connectors) and sensor control (7-pin connectors). The newer C137.4-2021 standard provides enhanced functionality and compatibility with the DALI D4i lighting and sensor control standard.
The NEMA ANSI C137.41 standard specifies covers roadway and area lighting equipment connection interoperability. The 7-pin receptacle provides for dimming control and sensor communications.
The NEMA ANSI C137.41 5-pin connector variant adds support for dimming control, but does not include sensor communications support which is supported by the 7-pin connector.
DALI, or Digital Addressable Lighting Interface, is a dedicated protocol for digital lighting control that enables the easy installation of robust, scalable and flexible lighting networks.
Wiring is relatively simple; DALI power and data is carried by the same pair of wires, without the need for a separate bus cable.
Read more at the DALI Alliance website: Introduction to DALI
The TALQ Consortium has established a globally accepted standard for management software interfaces to configure, command, control and monitor heterogeneous outdoor device networks (ODN) including smart street lighting.
This way interoperability between Central Management Software (CMS) and Outdoor Device Networks (ODN, so called ‘gateways’) for smart city applications from different vendors is enabled, such that a single CMS can control different ODNs in different parts of a city or region.
Read more at the TALQ website
D4i is the DALI standard for intelligent, IoT-ready luminaires.
By taking care of control and power requirements, D4i makes it much easier to mount sensors and communication devices on luminaires. In addition, intelligent D4i LED drivers inside the luminaire have the capability to store and report a wide range of luminaire, energy and diagnostics data in a standardized format.
Highly reliable hardware, firmware, and software components that perform specific, critical security functions. Because roots of trust are inherently trusted, they must be secure by design. Roots of trust provide a firm foundation from which to build security and trust.
Read more at the National Institute of Standards and Technology: Roots of Trust
The 0.1, 0.2, and 0.5 accuracy class electricity meters established within ANSI C12.20-2015 are accurate to within +/-0.1%, +/-0.2%, and +/-0.5% of true value at a full load.
Read more at the ANSI Blog: ANSI C12.20-2015 – Electricity Meters – 0.1, 0.2, and 0.5 Accuracy Classes.
Source: US Department of Energy 2015 U.S. Lighting Market Characterization, issued November 2018
The full Excel data set that accompanies this report can be downloaded here.
Tondo's controllers utilize a chipset containing the ARM Cryptocell 300 cryptographic accelerator chip with hardware-protected vault and Root of Trust security. Read more about the ARM 300 family here: ARM Cryptocell 300 Family Overview
The world would collectively achieve 10,546 TWh of energy savings by 2030 [with energy efficient lighting], a sum comparable to over 40% of the world electricity generation in 2011. Saving this amount of energy would prevent the emissions of 5,400 Mt CO2, a figure equivalent
to over 15% of the global emissions in 2011.
0 Comments