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Broadsens is pleased to announce a new edge-computing wireless Gateway GU300 that control advanced wireless vibration and temperature sensors. GU300 has all the advantages of GU200S including a powerful 4-core 1.5GHz processor, extended range to the sensors, and integrated database. GU300 has the following improvements on the popular edge-computing wireless gateway GU200S:

1. Added two GPIO ports. The GPIO ports can be configured as either inputs or outputs by software. One limitation of GU200S is the lack of GPIO ports that interface with other hardware devices directly. GU300 addresses this issue and allows user to configure the GPIO ports with programming software such as Python, C/C++ or JavaScript.
2. Added RS485 port. With the RS485 port, GU300 can support Modbus RTU sensors and read the sensors result to the gateway. Then the data can be sent out with MQTT protocol. GU200S only supports Modbus TCP function, while GU300 supports both Modbus TCP and Modbus RTU.
3. An additional power supply connector. This power supply connector is used for applications with strong vibration. Power can be provided through the vibration-resistant connector for reliable operations. This additional power supply connector can also be used to power other sensors such as Modbus RTU sensors.
4. Faster internal data transmission bus. The internal data transfer of GU300 is three times faster than GU200S. This creates opportunities for future sensor data speed boost.

The size of GU300 is 12x14x3 cm ( 4.7x5.5x1.2 in). The weight of GU300 is 490g (17 oz).

GU300 also has a higher storage capacity option, that offers up to 128GB storage.

A reset button is also added to the wireless gateway, that allows user to reset the network configuration to factory default in case that there is an IP conflict.

GU300 is available to order in July, 2023 and ready to ship out by the end of July, 2023. Please contact Broadsens for more details and price information.

New advanced trigger mode was added to Broadsens's SVT-A series ultra-low power wireless vibration and temperature sensors. This advanced trigger mode has a large 3,120 bytes pre-trigger buffer, which allows the sensor to capture 520 16-bit pre-trigger samples in all x, y and z axes. The sample rate of the trigger mode is user-adjustable from 400Hz up to 25.6kHz, with adjustable sample points from 2,048 up to 16,384 in three axes. The advanced trigger mode further solidifies Broadsens's position as one of the best wireless vibration sensor providers in the industry.

The trigger mode applies to all Broadsens's SVT-A series wireless vibration sensors SVT200-A, SVT300-A and SVT400-A.

Trigger mode is especially useful to capture critical events, and ignore regular vibrations. Trigger mode is very effective to capture shock events with its generous pre-trigger buffer.

In the application of conveyor system vibration condition monitoring and predictive maintenance, a threshold level of 0.5g is defined for four SVT300-A sensors. When the absolute value of the acceleration level at x, y or z axis of the sensor exceeds 0.5g, then the sensor will mark the vibration event, save up to 520 pre-trigger samples, and continue capturing vibration event until the specified samples are collected. The trigger level can be adjusted from 0.1g to 25.5g. If the motor is not rotating, then the sensor is continuously capturing data in a circular buffer in specified sample rate. In this application, 3.2kHz sample rate is used.

Multiple SVT300-A wireless vibration and temperature sensors in the same group can be set up to capture critical events. In the above conveyor system monitoring, sensors S1, S2, S3 and S4 are waiting for the trigger event. When the motor rotates and the vibration level exceeds 0.5g, then the sensor records 16,384 samples data, and send the data to Broadsens's wireless gateway. The BroadVibra software shows the vibration curve in real time. The vibration curve can also be reviewed and analyzed in the FFT analysis page. The time waveform of sensor S1 (id 12) is shown in the following picture:

Trigger mode can be used together with Broadsens's advanced timer by the BroadVibra software in the gateway. The time allows user to set up continuous DAQ, or periodic DAQ. The timer also allows user to specify which days and what time to start taking data. For example, user can set up the timer to take data from Monday to Saturday, and from 9am to 6pm. Then a periodic DAQ can be added for the sensors in the same group to monitor the trigger event continuously. The DAQ period can be set up at 5 minutes, and the DAQ duration can be set up at 5 minutes. Then the system can monitor trigger event non-stop.

Broadsens’s true real-time wireless vibration and temperature sensor system now supports Modbus TCP now. SVT200-V, SVT300-V and SVT400-V are the only true real-time wireless vibration and temperature sensors with four-year or more battery life in typical usage. The sensors are ideal for manufacturing, civil structures, compressors, train and heavy machinery, mining, food processing, chemical and many other applications that require continuous monitoring. The immediate response of from these real-time wireless vibration and temperature sensors ensure the safe operation of critical machines and structures.

The new Modbus TCP interface allows the vibration and temperature sensors data to be read by machines and PLCs that support Modbus TCP protocol. The sensors come with innovative dynamic sample design, which samples x, y and z axes acceleration continuously, and switches to 6.4kHz sampling rate immediately if the acceleration exceeds 0.1g in any of the axes for more than 330ms. The sensor acquires a fixed number of samples, calculates velocity RMS and acceleration RMS value, and sends the result plus temperature to the wireless gateway. BroadVibra software is installed the gateway and can add the Modbus TCP node per user's request. Once activated, then user can read the vibration and temperature values via Modbus TCP interface.

Each SVT-V series sensor’s data and information include: time stamp, sensor ID, sensor group, MAC address, RSSI, battery level, firmware version, vibration velocity RMS in x, y and z axis, acceleration RMS in x, y and z axis, and temperature measurement. Time stamp includes year, month, date, hour, minute and second, and it occupies 6 registers.

The default Modbus TCP port for Broadsens gateway is 10502. The port can be modified to "502" or any available ports at the gateway. Please contact Broadsens for the Modbus guide on how to change the Modbus port.

Broadsens's ultra-low power wireless vibration and temperature sensors now have IP69K waterproof and dustproof option. The IP69K rating means that a device can withstand intensive cleaning with high-pressure, high-temperature jets. IP69K products are ideal for industries where sanitation is a primary concern, such as food processing and pharmaceutical applications. Broadsens's wireless vibration and temperature sensors have been used for predictive maintenance and condition monitoring in pharmacy and food industry. In the following application, SVT200-A wireless vibration & temperature sensors are used in food processing to monitor the integrity of production line.

In the picture, SVT200-A wireless vibration & temperature sensors are used in food processing industry. The sensors are triple-coated from inside to outside. The circuit board and battery are coated with high temperature and chemical resistant silicone. Then Teflon tape is used to wrap around the internal for further protection. The sensor thread is processed with vibration resistant, waterproof thread lock. Then silicone coating is applied again to the exterior of the sensor. Finally, a transparent aqua-grade tube is used to prevent accidental damage to the waterproof thread. The materials are food-grade safe. The sensors are power washed every day with high pressure jet, so IP69K is a must for this application.

Broadsens's SVT-A and SVT-V sensors can monitor the production line continuously non-stop. Paired with Broadsens's edge-computing wireless gateways, several GBs of production data can be collected in a short time for predictive maintenance purpose. The wireless gateways come with large storge space (64GB in default), which allows for edge-computing and save bandwidth to send data to remote sites.

Ultra-low power wireless temperature SVT200-T measures contact surface temperature. Most wireless temperature sensors in the market can only measure the ambient temperature. Thanks to the innovative design from Broadsens, SVT200-T's temperature sensor IC's heat pad is located at the bottom of the sensor. SVT200-T's bottom is made of heat conductive metal, which transfers the heat to the measuring area of the sensor. To measure the contact surface temperature more accurately, user should put the top of SVT200-T close to the measurement area. The side wall of the metal base has vertical threads. The thread on the temperature sensor area is removed, so that user can identify the top quickly (Figure 1). It is the best to arrange the measurement area close to the sensor location for more accurate contact surface temperature measurement (Figure 2).

Wireless temperature sensor SVT200-T has the best battery efficiency in the industry in terms of measurement frequency. It measures contact surface temperature every 15s, compared to 1 minute to several hours frequency from other sensors. This make SVT200-T one of the best wireless temperature sensors in the industry. SVT200-T is for sale now and can be ordered from Broadsens or its distributors worldwide.