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  1. Home
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  3. PAL Inc.
  4. Beam reflection detection method and beam interruption detection method, two detection methods of microwave.
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  • Jul 03, 2020
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Jul 03, 2020

Beam reflection detection method and beam interruption detection method, two detection methods of microwave.

PAL Inc. PAL Inc.
At Pal Giken, we are developing various sensors that use "microwaves," and this time we will explain how they detect intrusions. ◆◆ Two Detection Methods ◆◆ Our microwave sensors support two detection methods. 1) Beam Reflection Detection Method A single sensor is installed, and the transmitted wave output from it defines the detection area. The detection range depends on the antenna angle of the sensor, but the sensor alone covers a wide distance. When a target intercepts the transmitted wave from the sensor, it is received as a reflected wave and detected as an "intrusion." 2) Beam Interruption Method This method configures the detection area by positioning the sensor and reflector opposite each other. The transmitted wave output from the sensor hits the reflector and is received as a reflected wave. There are also products that configure the detection area using a transmitter and receiver. In this case, the transmitted wave output from the transmitter is received by the receiver. In both cases, the levels that serve as the basis for transmission and reception are monitored, and if the wave is interrupted due to an intrusion, causing the level to fall below a threshold, it is detected as an "intrusion."
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Microwave Intrusion Detection Sensor 'BSS01/BSM02'

Easy to adjust and add sensors! A microwave intrusion detection sensor that is robust in natural environments and capable of distance measurement.

The "BSS01/BSM02" is a microwave intrusion detection sensor that is highly resilient to natural environments and capable of distance measurement. Unlike conventional Doppler and infrared interruption methods, it employs FMCW technology to detect intrusions based on distance and reflection levels, thereby reducing false alarms compared to traditional methods. It complies with the technical standards certification (ARIB STD-T73) for 24GHz band specific low-power radio stations, eliminating the need for cumbersome radio station license applications during use. Additionally, it can be used both indoors and outdoors within the country. 【Features】 ■ Strong against natural environments ■ Capable of long-distance monitoring ■ Covers a wide detection area ■ Capable of detecting intrusion locations ■ Easy installation adjustments and sensor expansions ■ Reduces false alarms *For more details, please refer to the PDF document or feel free to contact us.

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Microwave Proximity Sensor 'BSS300/BSS301'

Separating the surrounding environment and detection area with distance information to reduce false alarms! A short-range intrusion detection sensor that can measure distance.

The "BSS300/BSS301" is a sensor that detects intruders using radio waves in the 24GHz band. In pole monitoring, it is possible to complement the blind spots that occur at the feet of various intrusion detection sensors from above towards the ground. Microwaves are less affected by rain, snow, fog, backlighting, and other conditions, allowing for more stable monitoring even in environments where infrared sensors, image sensors, electric field sensors, and laser sensors often generate false alarms. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, with high reliability ■ Not affected by temperature changes caused by swaying vegetation ■ Can be installed along walls, on top of fences, etc., without restrictions on location ■ Not influenced by surrounding reflections *For more details, please refer to the PDF document or feel free to contact us.

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Microwave Smart Sensor "BSS20"

Counter-terrorism measures for important infrastructure such as power plants and airports! The 3D radio wave wall reliably captures terrorists.

The "BSS20" is an intrusion detection sensor that uses radio waves in the 24GHz band. It detects intruders by blocking a detection area composed of multiple opposing transmitters and receivers. It is highly resistant to outdoor natural environments, easy to adjust during installation, and can be utilized as a counter-terrorism measure for critical infrastructure such as power plants and airports. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability ■ No need for precise optical axis alignment like infrared sensors ■ Can be installed along walls, on top of fences, and in various locations ■ Forms a 3D radio wave barrier with up to 4 levels of multi-layer installation *For more details, please refer to the PDF materials or feel free to contact us.

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Microwave Multi-Span Sensor 'BSS200-P1'

Security measures for factories and equipment! Catering to various needs from easy installation to permanent setups.

The "BSS200-P1" is a sensor that detects intruders using 24GHz band radio waves. When an intruder interrupts the detection area, which is composed of a pair of transmitters and receivers, an alarm is triggered. There is no need for precise optical axis alignment like with infrared sensors, making installation adjustments easy during setup. It caters to various needs, from security measures in factories and facilities to simple installations and permanent setups. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability ■ No need for precise optical axis alignment like with infrared sensors ■ Can be installed in various locations, such as along walls or on top of fences ■ Achieves easy installation through miniaturization of the sensor and simplification of the interface *For more details, please refer to the PDF document or feel free to contact us.

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Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

Simultaneous measurement of speed and distance! A safety monitoring sensor utilizing highly weather-resistant microwaves.

The "BFS01/BFS01-P" is a microwave safety monitoring sensor that utilizes radio waves, making it resistant to weather conditions such as rain, wind, snow, and fog. It can perform reliable measurements with minimal false detections even in harsh outdoor environments. It complies with the technical standards for 24GHz specific low-power radio stations (ARIB STD-T73), and there is no need for a cumbersome radio station license application when in use. Additionally, it can be used both indoors and outdoors in Japan. 【Features】 ■ Capable of measuring speed and distance simultaneously ■ Dustproof and waterproof with an IP67 rating, allowing for direct outdoor installation ■ Compatible with system requirements through contact output and Ethernet  (* Speed and distance information is only available via Ethernet) * For more details, please refer to the PDF document or feel free to contact us.

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PAL Inc.
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Fukuda's leak test, leak inspection, leak detection, leak test, integrity test.

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Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Mar 24, 2026

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Non-contact light beam touch sensor "HA-T Series"

【Catalog now available!】Energy-saving automatic door sensors "HA-T401/HA-T520"

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The "HA-T Series" is an energy-saving automatic door sensor that opens only for those who wish to enter, whether on a busy street or in a narrow passageway. The automatic door opens simply by bringing your hand close, addressing hygiene concerns even in facilities used by a large number of people. You can choose between "Non-vision Mount Type/HA-T401" and "Non-vision Built-in Type/HA-T520" depending on the application and installation location. 【Recommended for such places!】 ☑ Entrance facing a busy corridor ☑ Presence of counters or signs near the door ☑ Buildings facing narrow passages ☑ Buildings that prioritize aesthetics ☑ Hospitals and facilities that consider hygiene ☑ Large facilities with many doors 【Features】 ● Adaptable to various door types with four detection spot settings ● Reduces unnecessary opening and closing, contributing to energy-saving by minimizing wasteful power consumption ● Equipped with a light touch function, allowing the door to open and close just by waving your hand, ensuring hygiene ● Can also be used as a wide detection range non-vision infrared sensor ◎ For more details, please download the materials or contact us.

Mar 24, 2026

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■■ Air leak tester for EV (electric vehicle) battery cases | FLZ-0630 series ■■ Reduces noise. Measurement is performed using a newly developed smoothing function and linear fitting correction function.

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This is an air leak tester for battery cases of electric vehicles (EVs). The battery case has the characteristic of being "large with a significant internal volume, and its structure may deform due to internal pressure." As a result, air leak testing generates "noise caused by its large size and capacity" and "noise caused by expansion or deformation due to internal pressurization." To mitigate this noise, this device features a newly developed smoothing function and a linear fitting correction function used in combination during measurement. Additionally, to achieve low-pressure control that is difficult to manage and to expand flow for large volumes, we provide a bypass box (CBU-600) equipped with an electro-pneumatic regulator for precise pressure control and a pressurization valve with a large effective diameter to supply high flow rates. Measurement methods: Work-Work comparison, Work-Master comparison, Fixed Master comparison Measurement pressure range: 10 kPa, 20 kPa, 50 kPa (depending on specifications) Gauge pressure sensor accuracy: ±2% F.S. Differential pressure sensor accuracy: ±0.5% F.S. Group settings: 0 to 31 groups Power supply voltage / Power consumption: AC100 to 240 V / 100 VA

Mar 24, 2026

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Hotron's vehicle detection sensors contribute to efficient parking management, from coin parking to large-scale parking lots.

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Hotron's vehicle detection sensors allow you to search for products that meet your needs in three categories: "Purpose of Use," "Location of Use," and "Product List." The sensors detect the passage of vehicles, alerting you with rotating lights or switching the display of parking availability. They manage vehicle presence, full parking, and exit warnings in parking lots, contributing to safe driving and smooth operational management within the parking area. They are used in various settings, from coin-operated parking to large-scale parking lots.

Mar 24, 2026

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【Casting Prototype Metal Cracking】We repair cracks in metal products without applying heat.

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The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed without causing any thermal impact on the base material. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

Mar 24, 2026

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