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Mobile Inspection System with Solar Modules

Mobile Inspection System with Solar Modules


Mobile Inspection System
with Solar Panels for PCR Tests in Off-Grid Areas


OVID-19 outbreak has caused a significant impact on the lives of people and industries all over the world. In addition, demand for testing facilities in order to determine positive/negative has been rapidly increasing. PCR (polymerase chain reaction) test is one of the most popular method for COVID-19 and thousands of tests have been conducted on daily-basis in each country.

To implement the whole process of PCR test, it is essential to install sample collection room, sample storage box in a cold chain and air purification device. Subsequently these facilities must be connected to infrastructure; electricity supply is necessary to operate these apparatuses.

However, developing countries tends to have a difficulty to conduct tests in rural regions, especially non-electrified areas. TSP TAIYO INC. offers a practical solution for this, by providing the test facility mentioned below;

  • Equipped with both solar panels and battery units, enabling use even in off-grid areas of developing countries.
  • Designed with a focus on minimizing infection risk for medical professionals, test subjects, and other patients at medical facilities.
  • Can also be used for specimen collection when there are no medical facilities for testing available.

Fig. 1 Image of mobile inspection system (trailer type)

Fig. 2 Image of mobile inspection system (house type)

Major Features and Advantages

  1. Source of Electricity Powered by Solar Panels
  • The built-in battery units can provide electric power for about ten hours.
  1. Individual Testing Booths for Test Subjects
  • Using booths for testing minimizes the possible range of airborne droplets from test subject sneezes and other causes, preventing the risk of infecting medical professionals or other patients who may be uninfected.
  • Restricting airborne droplets to the testing booth also lowers the risk of infection spreading in the hallway or in other areas of the facility, ensuring that the overall functionality of the facility can be maintained.
  1. Maximizes Number of Tests Performed by Each Doctor
  • As facilities may face a lack of doctors and/or hazmat suits, this system is designed to maximize the number of tests that can be performed by each doctor.
  • With the testing booth system, a single doctor can alternate between multiple booths, performing tests one after another: as many as 100–200 tests per day per location.
  1. Working through Transparent Panels Reduces the Need for Personal Protective Equipment
  • Doctors can perform their testing work through transparent panels, using special panel-mounted pass-through gloves to collect specimens. This leads to reduced infection risk, and reduced need for hazmat suits and other forms of personal protective equipment (PPE).
  1. Improved Efficiency by Disinfecting in Parallel with Testing
  • Dividing the test location into booths makes it possible to improve disinfection efficiency and increase testing booth availability.
  • Using a negative-pressure filter system prevents air or airborne viruses inside the testing booths from escaping, while enabling ventilation.

Technology Data

Possible applications

  1.  PCR tests will be able to be performed on a mobile basis, even in areas where a stable power supply is unavailable, such as low-income urban residential areas, as well as in rural off-grid areas.
  2.  Human resource development with respect to PCR testing skills

Competitive advantage

▪ The testing booths can be kept in storage as stockpiled epidemic prevention supplies.
▪ The tents can be used for purposes other than for the prevention of epidemics.
▪ The solar panel peripheral equipment can be operated using the electricity generated by the photovoltaic modules, allowing for independent in-house operation of the system. In addition, the high-capacity electricity storage system (19.5 kWh) enables operation for several days even without any electricity generation at all. The equipment contains no toxic substances that could escape into the environment when it is disposed of, and the valuable resources can be reused.


As of 2020 September, the mobile PCR inspection system is still under development. The company is expected to conduct operation test when the peripheral electric devices are fully incorporated to the testing booths. 

▪ Each testing booth is a modular box measuring approx. 1 m wide by 1 m deep by 2.1 m tall. They can be used either standalone or as part of a set, depending on the intended use and the condition of the installation location.
▪ The solar panel peripheral equipment will come with a transformer to convert the voltage and frequency of the local grid electricity (240 V, 50 Hz) to the specified values (100 V, 50 Hz), and this will be installed on the floor or the roof of the working area. No parts of the operating equipment are considered harmful to the environment, and they are not considered to be subject to relevant regulations, although there are points to note regarding handling.

Expected specifications;
1) Solar modules on the roof: power supply (2400 W)
2) Battery units: 10 hours duration (at full charge)
3) Negative pressure pump unit: around -2.7 Pa in the inspection room
4) HEPA (High-Efficiency Particulate Air) filter
5) Capacity: two pairs of booths for sample collection and a test subject (one pair of booths to be used during operation and the other to be stand-by)

                                     Fig. 3 Pressure test of the booths @research and development facility

Technical Maturity/ Past record of introduction

As of September 2020, sample collection and storage using prefab-type inspection facility without solar module/battery and other electric devices were conducted in Japan.
Testing booth has been designed and constructed under the supervision of Japan Medical Association, Japan Medical Association Research Institute and Tokyo Medical Association.

Introduction case

  1. Higashimatsushima-shi, Miyagi, Japan (September 2020)
    The unit house-type inspection facility was installed for ambulatory practice to returnees/contacts.

  Fig. 4 The unit house-type inspection facility

  1. Nerima-ku, Metropolitan Tokyo, Japan (Sep 2020)
    The trailer house-type inspection facility was settled under the elevated structure of the railway. It can be an efficient use of land under a girder bridge.

Fig. 5 The trailer house-type inspection facility

Sales result of solar modules
Regarding the solar panel peripheral equipment, our technical partners have introduced solar and battery systems in off-grid areas of the Maldives and other countries for electrification.
(same equipment will be applied for the mobile PCR inspection system)

Information on patent related to this technology


Company Data


1-17-16 Higashiyama, Meguro-ku, Tokyo, 153-0043 Japan

Capital 100 million JPY (as of 31 March 2020)
Contact person

Mr. Takayuki NISHI
Tel: +81-3-3719-3357
Corporate website:

Number of employees

172 (as of 31 March 2020)

Date of company foundation 21 February 1955
The type of business Operations involved with various events
(Planning and construction of venue facilities; merchandise sales; rental of facilities, equipment, and furnishings; etc.)


International operation

Number of employees for international operation 

(The company has no divisions specifically dedicated to overseas operations. Overseas projects are handled by individuals assigned on a case-by-case basis.)

City, Country Name of Company (if applicable)

Modality of business transaction

We expect it should be possible to establish a local corporation to engage in market development, sales, assembly, and installation, as well as the incorporation of locally procurable items into the system, in the event that we can determine that there will be sufficient adoption of registered technologies through demonstration projects, etc.


Schematic illustration of the technology


Contact Person(s)

Mr. Takayuki NISHIE-mail:

*Please mention that you saw UNIDO's website when making the first contact with the company.

Registered Category

  • Human Health Technologies : Public health / Monitoring and diagnostic equipment