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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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[New Product] We will release a cloud-managed turbidity meter and pH meter on October 1, 2025.

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  • PRODUCT

On October 1, 2025, we will release a cloud-managed turbidity meter and pH meter as a new option for the Disaster Prevention System ZEROSAI and Compass PLUS. Features: - Centralized management of turbidity and pH in the cloud along with weather information - Automatic notifications via electronic bulletin boards and business chat* when standard values are exceeded - Observation data can be output in PDF or CSV format *ZEROSAI can automatically notify through the following business chats: LINE WORKS, direct, WowTalk, Microsoft Teams *For more details, please visit our website or feel free to contact us.

Oct 01, 2025

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This is an actual existing generator.

[Pre-Purchase Campaign] You can view actual existing generators. *Limited to those considering purchasing a generator.

  • NEW
  • EVENT

Thank you very much for visiting our company website and catalog, and for your interest in our diesel engine generators. From customer surveys, the most common feedback we received was: - I want to see the actual generators that have been installed. - I want to see them operating under real load. - I want to hear the opinions of companies that have installed them. - I want to see the generators in operation before making a purchase. After all, it’s understandable to feel worried about purchasing a generator without seeing the actual unit first, right? As the saying goes, "Seeing is believing," so we will be holding this tour. It will take place in that area of the Kanto region, where summer temperatures exceed 40°C. We successfully operated our generators this summer as well, so we are confident in handling the heat (sweat). Additionally, it has been confirmed that our generators equipped with the world-leading "Scania engine" are "fuel-efficient." This will surely help reduce daily operating costs. Please note that while we will provide kind and courteous assistance, the meeting and dispersal will be at the site (transportation costs and other expenses will be borne by the customer), so please understand this in advance. Contact: Kaneko

Oct 01, 2025

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We have opened an online shop for Top Water Systems.

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  • COMPANY

We have launched a website where you can purchase some of our products, consumables, and optional items online. We hope you take advantage of it. We plan to expand the range of products available on this site in the future. Thank you for your support.

Sep 30, 2025

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Buffet counter

[Production Example] Buffet Counter for F Hotel in the Metropolitan Area | Wood Grain | For Hotels, Restaurants, and Banquet Halls

  • NEW
  • PRODUCT

We would like to introduce a case study of the buffet counter created for F Hotel in the metropolitan area. This buffet counter is a mobile multipurpose counter that balances functionality and design. The top is made of luxurious artificial marble, and the exterior features a calm wood grain design that blends seamlessly into any space, enhancing the appeal of the food and products. It is versatile and can be used in various settings such as hotels, restaurants, and party venues.  ■━━━━━━━━□  ┃ Case Study Overview ┃  □━━━━━━━━■ ■Year of Production: 2025 ■Delivery Location: Metropolitan Area ■Materials: Artificial marble       Melamine decorative board       Poly plywood       Swivel 100Φ rubber wheels       With power outlet       Door lock for opening and closing

Sep 30, 2025

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Release of the meeting reservation notification display system InfoLink.

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  • OTHER

We will start providing the conference room reservation guidance display system InfoLink. By integrating with Microsoft Outlook, it will display real-time reservation status, solve various office challenges, and lead to effective resource utilization. 【Features】 - Real-time display and update of reservation status: Operations for reservation, start, extension, and end can be performed directly from the terminal in front of the room. Additionally, there is an automatic cancellation feature that activates after a certain period has passed since the scheduled start time of the meeting, supporting the effective use of conference rooms. - Screen design options to match the office environment: You can choose from three standard designs for the screen. In custom design (*), you can reflect your company logo and brand colors, enhancing the spatial experience. - Display of a list of conference room reservations: In addition to displaying the location and time of meetings scheduled for the day, it is also possible to guide the location of the conference room on a map (*). - Integration with related systems (*): By integrating with related systems, more diverse displays can be achieved. Integration with the private booth reservation guidance display system allows for the display of free-address seating and private booths in a map format. * denotes optional features.

Sep 30, 2025

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  • 既存マニュアルが15言語ナレーション動画に 全15言語に対応 外国人実習生 海外拠点
  • 位置情報で実現するスマートロジスティクス 排出ガスも待機時間も”見える化”で解決
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