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  3. パル技研
  4. Beam reflection detection method and beam interruption detection method, two detection methods of microwaves.
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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 microwaves.

パル技研 パル技研
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. Additionally, there are 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 radio wave is interrupted by an intrusion, causing the level to drop 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 strong against 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 adopts the FMCW method to detect intrusions based on distance and reflection levels, which reduces 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 in 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 materials 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 supplement the blind spots created 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 tend to generate false alarms. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability ■ Not affected by temperature changes caused by swaying vegetation ■ Can be installed along walls, on top of fences, and in various locations ■ 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! 3D radio wave barriers reliably catch terrorists.

The "BSS20" is an intrusion monitoring sensor that uses 24GHz band radio waves. It detects intruders by blocking a detection area composed of multiple opposing transmitters and receivers. It is robust against 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 through multi-stage installation of up to 4 layers *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 obstructs 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 materials or feel free to contact us.

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Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

Simultaneously measures speed and distance! A safety monitoring sensor that utilizes highly weather-resistant microwaves.

The "BFS01/BFS01-P" is a microwave safety monitoring sensor that utilizes radio waves, making it resilient to weather conditions such as rain, wind, snow, and fog. It can perform reliable measurements with minimal false detection even in harsh outdoor environments. It complies with the technical standards for 24GHz band specific low power radio stations (ARIB STD-T73), and there is no need for a cumbersome radio station license application when using it. Additionally, it can be used both indoors and outdoors within the country. 【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 supported only via Ethernet) * For more details, please refer to the PDF materials 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'

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Microwave Smart Sensor "BSS20"

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Microwave Multi-Span Sensor 'BSS200-P1'

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January to March [3-Month Forecast Announcement] Be cautious of early snowmelt following the cold air moving from the west!

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On December 23rd (Tuesday), the Japan Meteorological Agency announced the three-month forecast for January to March. During this period, there will be times when the extension of the Siberian high pressure is weak to the northeast and strong to the southeast, which may lead to the influence of cold air from the west. As a result, temperatures nationwide are expected to be nearly average from January to February. For more details, please visit our company website.

Jan 07, 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 want 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. Depending on the application and installation location, you can choose between "Non-vision Mount Type/HA-T401" and "Non-vision Built-in Type/HA-T520." 【Recommended for such places!】 ☑ Entrance facing a busy passageway ☑ Presence of counters or signs near the door ☑ Buildings facing narrow passageways ☑ 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 to minimize power consumption, contributing to energy-saving effects ● Equipped with a light touch function, allowing the door to open and close simply 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.

Jan 07, 2026

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Full and Empty Management (Medium to Large Scale)

Parking lot occupancy management vehicle detection sensor | Hotron Co., Ltd.

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Full and empty management refers to the real-time display of parking availability and the management of efficient use of parking spaces. By utilizing Hotron's sensors, drivers can quickly discover available parking spaces, achieving efficient parking lot operations. ■ For large parking lots, the "floor management method" and "block management method," which focus on cost reduction, are recommended. Sensors are installed at regular intervals to count the number of vehicles passing through. This method offers the advantage of easy installation and low costs. 【Target Products】 - Vehicle Count Sensor CCS2 - Ultrasonic Sensor HM-UX2/UW2 ■ For smaller scale operations, the "space management method," which installs sensors in each parking space to display availability with high accuracy, is recommended. By ensuring accurate full and empty displays, it helps prevent unnecessary entry of new vehicles and enables safe parking lot operations. 【Target Products】 - Occupancy Detection Sensor HM-UX2/UW2 - Occupancy/Pass Detection Sensor HM-LC6 - Occupancy Detection Sensor HM-LC7/LC7-FLS - Occupancy/Pass Detection Sensor HM-S6 - Occupancy Detection Sensor HM-S8

Jan 07, 2026

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End of Year and New Year Reading Marathon! Top 10 Most Read Contents of 2025

SBS Marketing Co., Ltd. Year-End and New Year Reading Marathon! Top 10 Most Read Content of 2025.

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Based on practical experience in support companies and business companies, SBS Marketing Co., Ltd. provides consulting services mainly related to marketing, sales promotion, and customer acquisition in the BtoB (business-to-business) sector. On January 3, 2026 (Saturday), they published the page "Top 10 Contents Read Thoroughly in 2025 for a Year-End and New Year Reading Spree!" Here are the Top 10 contents you want to read thoroughly during the year-end and New Year period in 2025! (Page Overview: Excerpts) ■10th: The Rice Theory ■09th: Skills & Techniques Required for BtoB Marketers Internally ■08th: Scapegoat ■07th: Perfectionist ■06th: Necessary HR Evaluation and Management for BtoB Marketing ■05th: Manipulator ■04th: What are the Methods of Customer Acquisition that Cost (as little as possible)? ■03rd: Why Do People Believe in 'Prophecies'!? ■02nd: Black Sheep Effect ■01st: Career Change to a Marketer at a Support Company ▼ For more details, please visit this page. https://sbsmarketing.co.jp/blog/top-10-length-of-stay-in-2025-2026-01/

Jan 06, 2026

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What is the new Staron product, the luxury "Premiere Collection"?

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In recent years, quartz stone has been increasingly used in residential kitchens. The "Karakata" pattern, in particular, has been loved by the world's wealthy for many years, and is said to possess high quality, design appeal, and a high price. However, we have now succeeded in creating artificial marble with the "Karakata" design, marking a groundbreaking event that opens a new genre, which we have named Premiere. We are now in an era where the Karakata design can be enjoyed not only in quartz but also in artificial marble. For more details, please visit the URL below! https://staron.jp/column/staron-premiere-collection/

Jan 06, 2026

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  • 高セキュリティ 機密会議 完全オフライン運用 高セキュリティ議事録AI オンプレミス仕様で安心運用 SecureMemo
  • イプロスAI活用プラン新登場 貴社の“欲しいリード”がより多く手に入る!
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