The OzScore® System
- Affordability - a minimum basic system costing around A$15000 ex GST plus installation and transportation costs
- Simplicity in setup and configuration. A high level of electronics or computer knowledge is not required to install or operate Ozscore
- Rugged construction - extensive use of industrial grade electronics, enclosures, and external connectors
- No moving parts - Ozscore uses a colour touch screen on the mound and no keyboard or rotating hard drive
- A variety of power supply options. All Ozscore units can be powered by DC voltages from 9V to 36V unregulated.
- Low power consumption.
- Intelligent Mound Display Units catering for distributed processing of target data management functions
- Wireless communications between system components (mound/targets, mound controller/display units).
- Muzzle Blast detection
- Multiple shooters per physical target
- Active target fault and performance feedback to shooters. Shooters are not automatically penalised for "lost" shots.
- Crossfire detection
- Optional Sighter management
- Portability. All major system modules can be simply plugged in and switched on.
- Lightweight targets (35Kg for the PH-1818)
At Canberra on Saturday 3rd September 2011 a total of 526 shots were fired by 24 shooters on to two OzScore Electronic Targets from four firing points. We believe that this is a World First.
As far as we know, never before has it been possible to shoot from four firing points randomly at one target with the shot results being presented to the shooter who fired the shot.
All the virtual target images were available for viewing on a standard laptop browser using Wifi (wireless LAN) in near real time (within 2 secs of a result determination). In 98% of cases, shooters are advised of the shot result within 1/5th of a second of impact time (often less than 1/10th second).
The range was 600M onto an ICFRA aiming mark. It was a Spoon shoot so the shots counted. About 200 were fired in a 2 FP to 1 TGT configuration with no apparent shot collisions at the target or misses attributable to a system fault. The remainder were shot from the 4 FPs to only one target - we deliberately took the 2nd target out of service simply to conduct this test. I'm not sure how many collisions occured possibly one. There was one "lost" shot due to a communications problem. We are not aware of any "bogeys" - normally a shooter will complain bitterly when a fault occurs. But maybe the shooters were being nice that day!
We had a number of misses. All were accounted for due to non-zeroed rifles and were actually missing the target. But it had me on edge until this was confirmed. In fact, the target system adhered to the policy of giving the shooter some benefit of doubt by designating what was effectively a miss as a null (unscored) shot due to target fault (when it was in fact a bullet sailing over the top thus triggering the top but not bottom microphones).
There were two apparent cross fires detected. I think this was erroneous as only one target was being shot at. But the shot was measured and the result manually attributed to the shooter.
Given the complexity of this system - the only one apparently in the world that employs muzzle blast detection - that requires rather sophisticated software to manage all that is going on in real time, overall I consider the day to have been a great success. I think everyone had a lot of fun - shooting did not cease until 4.45pm and I can't remember when we shot for over 3 hours without a break at Canberra.
There are a few issues to resolve - all minor - and no show stoppers as yet.
Four shooters firing concurrently and at random at Target B7 at Canberra, 3rd September 2011
Nearly four years in the making, the first incarnation of the Ozscore Electronic Target System is nearing completion. Ozscore is an acoustic target system designed specifically for long range shooting environments (300 yards to 1200 yards).
It is intended that OzScore be released in November 2011, shortly after staff commitments to the National Championships and World Long Range Championships at Belmont (Brisbane) are completed.
Furthermore, the regulatory approvals for emissions (C-tick) of one of the electronic components should be available by then allowing the system to move into production.
Ozscore has been designed by shooters for shooters with particular attention being given to the needs of shooters on the mound, and affordability by the typical small Club in Australia. These needs include a rugged system that can withstand potentially harsh environmental conditions over a prolonged period of time. In Australia, shooting activities can be conducted in temperatures ranging from zero to more than 40 degrees Celcius. Furthermore, the equipment can be exposed to dust and grit, rain, sleet, and rough treatment.
As a result of these potential operating conditions, Ozscore comprises of a mix of imported and locally designed and manufactured industrial grade electronics and associated hardware. Most of the system is housed in powder coated metal enclosures that are not only durable, but portable as well. The remaining system components are housed in quality (IP65+) plastic enclosures that can also withstand the elements.
It has always been a primary design objective that Ozscore be affordable to regular shooters, while maintaining the various standards required for longevity of operation. All of the engineering decisions have been made with these factors in mind. Ozscore is not fancy, but functional. While the needs of shooters have been considered first and foremost, so have the needs of spectators. As a result, the system has been designed to meet spectator needs both on the mound, and elsewhere. But without happy shooters there is little need for spectators!
Additional key features of Ozscore are:
Ozscore is the only electronic target system in the world employing a Muzzle Blast Detection (MBDS) system that allows for a tight coupling between the targets and the mound computer systems. Essentially, the MBDS by way of a two-way radio link notifies a target that a shot has been fired at it, when it was fired, and from where. This allows for:
- the implementation of a multiple shooter per physical target system
- the detection of crossfires
- automatic miss detection (failures to reach target)
- measurement of approximate times of flight (generally ± 50mSecs)
As a result, Ozscore has capabilities not able to be provided by any other long range electronic target system currently on the market in Australia.
A key component of any target system is of course the targets themselves. In fact, without effective targets, the entire system is compromised.
Considerable effort has gone into the design of the targets used by the Ozscore system. One issue addressed was their weight: the Ozscore PH-1818 target (1800x1800mm) weighs only 35Kg which makes it the lightest electronic target frame available. The Ozscore PH-1818 and PH-2418 targets are registered designs with IP Australia and may not be copied.