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  1. Home
  2. Industrial Electrical Equipment
  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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Related catalog(5)

Microwave Proximity Sensor BSS300/BSS301

Microwave Proximity Sensor BSS300/BSS301

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Microwave Intrusion Detection Sensor 'BSS01/BSM02'

Microwave Intrusion Detection Sensor 'BSS01/BSM02'

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Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

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Microwave Smart Sensor "BSS20"

Microwave Smart Sensor "BSS20"

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Microwave Multi-Span Sensor 'BSS200-P1'

Microwave Multi-Span Sensor 'BSS200-P1'

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PAL Inc.
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Slim 4 (Four) 48 W Jacket Tubes

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We would like to introduce 'Slim 4' handled by FCR & Bio Co., Ltd. This product is a jacket tube with a rack lid lock and anti-rotation function (compatible capacity 4.1ml). It is autoclavable and suitable for DMSO and vapor phase of liquid nitrogen. Additionally, it features a screw cap that does not use O-rings, packing, or gaskets. 【Features】 ■ Polypropylene ■ Autoclavable ■ DMSO compatible ■ Suitable for vapor phase of liquid nitrogen *For more details, please download the PDF or feel free to contact us.

Nov 07, 2025

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【Metal Crack Repair】We repair cracks in metal products without applying heat.

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The "Mechanical Stitch 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, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out 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.

Nov 07, 2025

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[Cast Iron Crack] We will 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, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is kept to a minimum. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

Nov 06, 2025

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[Cast Iron Crack Repair] We repair cracks in metal products without applying heat.

  • NEW
  • COMPANY

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, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out 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.

Nov 06, 2025

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Please take a look at the technical document for the leak test, the "Technical Manual"!

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Fukuda Co., Ltd., which develops, manufactures, and sells leak testing equipment to inspect airtightness and sealing performance, provides a technical document that clearly explains the methods and theories of airtight testing, titled "Technical Manual." We are offering it as a PDF file. Please take this opportunity to download and view it!

Nov 06, 2025

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  • XP Power XP Power CCR200/300/420/550シリーズ電源ー信頼性の高い電源
  • スマートファクトリーJAPAN 2025出展 会期12/3(水)~5(金) 会場 東京ビッグサイト 南ホールF-22
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