Environmental Sensor Array for Tamper Detection

Product Specifications

Technical details and manufacturing context for Environmental Sensor Array

Definition

The Environmental Sensor Array is a component used within tamper detection circuits. It integrates multiple environmental sensors to continuously monitor physical conditions such as temperature, humidity, vibration, and light exposure. The array provides real-time data to detect unauthorized access, environmental manipulation, or physical interference with protected equipment or enclosures. It is designed for integration into security systems where environmental anomalies may indicate tampering. The array combines outputs from various sensors into a unified data stream, which is processed by the tamper detection circuit's logic unit to establish baselines and detect anomalies. Key parameters include a temperature measurement range of -40 to 85 °C with an accuracy of ±0.5 °C at 25 °C, and a humidity range of 0 to 100 %RH with an accuracy of ±3 %RH at 25 °C. The supply voltage is 3.3 to 5.5 V DC, with reverse polarity protection, and current consumption averages 1.2 to 2.5 mA during active measurement. The interface is I2C with selectable addresses. Response time for 63% of a step change is 8 to 30 seconds. The enclosure is rated IP65 (dust-tight and water-jet protected) per IEC 60529. Operating pressure is 86 to 106 kPa. Weight is 45 to 60 g without cable, and dimensions are 80×50×25 mm (enclosure only). Operating temperature is -20 to 60 °C, and storage temperature is -40 to 85 °C, both non-condensing. Materials include a printed circuit board, silicon sensor chips, and a protective housing. These specifications are reference ranges; verify model-specific values with the manufacturer.

Working Principle

The array integrates outputs from temperature, humidity, vibration, and light sensors into a unified data stream. This data is processed by the tamper detection circuit's logic unit to establish environmental baselines. Anomalies such as sudden temperature changes, unexpected vibrations, or light exposure in sealed compartments indicate potential tampering. The logic unit compares real-time data against baselines and triggers alerts when thresholds are exceeded. The array's response time of 8 to 30 seconds for 63% of a step change defines its sensitivity to rapid environmental shifts. The I2C interface allows address selection for multiple arrays on the same bus. The IP65-rated housing protects sensors from dust and water jets, ensuring reliable operation in harsh environments. The operating pressure range of 86 to 106 kPa ensures functionality at typical atmospheric conditions. The array's power supply range of 3.3 to 5.5 V DC with reverse polarity protection simplifies integration into existing circuits. The current consumption of 1.2 to 2.5 mA during active measurement supports low-power applications. The array's dimensions and weight facilitate mounting in confined spaces. The temperature and humidity accuracies are typical at 25 °C, and actual performance may vary with operating conditions.

Common Materials

Printed Circuit Board (PCB), Silicon sensor chips, Protective housing

Technical Parameters

Parameter	Typical range	Notes & selection driver
Measurement Range (Temperature)	-40–85 °C	Operating range for all sensors
Measurement Range (Humidity)	0–100 %RH	Non-condensing
Accuracy (Temperature)	±0.5 °C	Typical at 25°C
Accuracy (Humidity)	±3 %RH	Typical at 25°C
Supply Voltage	3.3–5.5 V DC	Reverse polarity protected
Current Consumption	1.2–2.5 mA	Average during active measurement
Interface	I2C	Address selectable
Response Time	8–30 s	For 63% of step change
IP Rating	IP65	Dust-tight and water-jet protectedIEC 60529
Operating Pressure	86–106 kPa	Atmospheric pressure range
Weight	45–60 g	Without cable
Dimensions (L×W×H)	80×50×25 mm	Enclosure only
Operating Temperature	-20–60 °C	Non-condensing
Storage Temperature	-40–85 °C	Non-condensing

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Temperature Sensor
Monitors ambient temperature changes that may indicate tampering or environmental manipulation

Material: Silicon
Humidity Sensor
Detects moisture level changes that could signal environmental interference or condensation from tampering

Material: Polymer film
Vibration Sensor
Senses physical movements, impacts, or attempts to open/disassemble protected equipment

Material: Piezoelectric ceramic
Light Sensor
Detects light exposure in sealed compartments where darkness should be maintained

Material: Photodiode silicon
Signal Conditioning Circuit
Processes raw sensor signals into standardized outputs for the tamper detection system

Material: PCB with integrated circuits

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Tamper Detection Circuit

View system integration details

Manufacturers of Environmental Sensor Array

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Frequently Asked Questions

What environmental parameters does the sensor array monitor?

The array monitors temperature, humidity, vibration, and light exposure. These parameters are used to detect anomalies that may indicate tampering, such as sudden temperature changes, unexpected vibrations, or light in sealed compartments.

What is the supply voltage and current consumption?

The supply voltage range is 3.3 to 5.5 V DC, with reverse polarity protection. Average current consumption during active measurement is 1.2 to 2.5 mA. These values are reference ranges; confirm for the specific model.

What is the response time of the sensor array?

The response time for 63% of a step change is 8 to 30 seconds. This indicates how quickly the sensors react to environmental changes, which is important for detecting rapid tampering attempts.

What is the IP rating and what does it mean?

The enclosure is rated IP65 per IEC 60529, meaning it is dust-tight and protected against water jets. This ensures the array can operate in environments where dust or water exposure might occur, but it is not suitable for submersion.

Data Basis

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Preliminary Technical Classification

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pressure:	0 to 1 bar (non-pressurized environments)
other spec:	Humidity Range: 0-100% RH non-condensing, IP67 rating, Power: 3.3-5V DC, 10mA typical
temperature:	-40°C to +85°C

Environmental Sensor Array

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

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Reliability & Engineering Risk Analysis

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