Method and system for monitoring building structures
Methods and systems are disclosed for monitoring properties of building structures (e.g., monitoring the strength and humidity of concrete structures) using sensor devices embedded in the building structures. The sensor devices collect sensor data and wirelessly transmit the data to portable computer devices operated by users.
1. A sensor device for monitoring properties of a building material within which the sensor device can be embedded, the sensor device being packaged in a removable light blocking packaging, the sensor device comprising:
a controller;
memory associated with the controller;
one or more sensors connected to the controller for measuring one or more properties of the building material;
an optical sensor connected to the controller for detecting the presence of light;
a power supply for powering components of the sensor device; and
a communication module connected to the controller;
wherein the controller is configured to receive a signal from the optical sensor when light is detected after the sensor device is removed from the light blocking packaging, and to responsively activate the sensor device, and
wherein the controller is configured to receive data on the one or more properties of the building material from the one or more sensors after the sensor device is removed from the light blocking packaging and embedded in the building material, and to wirelessly transmit data on the one or more properties of the building material to an electronic device external to the building material through the communication module.
2. The sensor device of claim 1 , wherein the building material comprises concrete, asphalt, or epoxy.
3. The sensor device of claim 1 , wherein the one or more properties comprise building material temperature, vibration, pH, gas and particle presence, load, acoustic properties, and relative humidity.
4. The sensor device of claim 1 , wherein the electronic device comprises a smartphone or a personal computer.
5. The sensor device of claim 1 , wherein the sensor device communicates with the electronic device using Bluetooth, Bluetooth Low Energy, ANT, IEEE 802.11 and WiFi, RFID, NFC, Thread, LoRa, or ZigBee.
6. The sensor device of claim 1 , further comprising an outer housing containing at least the controller, the memory, the power supply, and the communication module, wherein the sensor device further comprises a cable tie connected to the outer housing attachable to a structure within the building material.
7. The sensor device of claim 1 , further comprising a machine-readable code on an outer housing of the sensor device uniquely identifying the sensor device.
8. The sensor device of claim 1 , wherein the power supply comprises a battery and a power regulator.
9. The sensor device of claim 1 , further comprising an outer housing including a portion permitting light to pass through to the optical sensor within the housing.
10. The sensor device of claim 1 , further comprising an outer housing having an opening covered by a membrane filter, said membrane filter enabling moist vapor to enter the outer housing for sensing by the one or more sensors, while inhibiting or preventing liquid, chemicals, or debris from entering the outer housing.
11. The sensor device of claim 10 , wherein the membrane filter comprises a PTFE membrane.
12. The sensor device of claim 1 , wherein the data transmitted by the sensor device is encrypted, and the electronic device is configured to decrypt the data.
13. The sensor device of claim 1 , wherein to responsively activate the sensor device comprises to responsively place the sensor device in a waiting-for-pour state when the optical sensor detects light when the light blocking packaging is removed, and then to place the sensor device in an encased state when the optical sensor subsequently detects an absence of light when the sensor device is embedded in the building structure.