DE29814738U1 - Touch reader and wireless sensor (sensor) for monitoring gas, smoke, water and temperature data with an evaluation unit working on RFID (radio frequency) - Google Patents

Description

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Technical description :

Non-contact and wireless sensor for monitoring Gas, smoke, water and temperature data. With a RFID (radio frequency) based Evaluation unit

The measurement sensor (Fig. 1) consists of a CPU (Fig. 1/1) which is mounted on a carrier board (Fig. 1/2) and an antenna coil (Fig. 1/5) which is connected to the contact surfaces (Fig. 1/3).

The sensor (Fig. 1/7) is also connected to the contact surfaces (Fig. 1/3) of the carrier board (Fig. 1/2).

Depending on the application, the sensor (Fig. 1/7) can be designed as a gas sensor, smoke sensor, water sensor, or temperature sensor.

If the sensor (Fig.l) is connected to a controller (Fig.2/2) and the antenna

When exposed to the electromagnetic field generated (Fig.3/3), the sensor (Fig.1) draws a voltage from the electromagnetic field (Fig.3/3) of the evaluation unit (Fig.2/3) via the antenna coil (Fig.1/5).

This voltage is used to supply the CPU (Fig. 1/1) and the sensor connected to it (Fig. 1/7) with energy. The CPU (Fig. 1/1) then sends a command to the sensor (Fig. 1/7) to record measurement data.

The values measured by the sensor (Fig. 1/7) are processed by the CPU (Fig. 1/1) and made available to the evaluation unit (Fig. 2/3) for evaluation by amplitude modulating the data to the carrier frequency of the electromagnetic field (Fig. 3/3).

By programming the CPU (Fig. 1/1) of the sensor (Fig. 1), a unique identification number can be assigned to it. If there are several sensors (Fig. 1) in the electromagnetic field generated by the evaluation unit (Fig. 3/3), they can be recognized by the different identification numbers of the sensors (Fig. 1).

The data sent by the various transducers (Fig.l) can be assigned to each transducer (Fig.l) in the evaluation unit (Fig.2/3).

It is now possible to compare the data measured by the sensors (Fig. 1) and transmitted to the evaluation unit (Fig. 2/3) with the standard widths stored in the CPU (Fig. 1/1).

If a deviation is found between the measured values and the standard values, a message is shown on the display (Fig.2/4) of the evaluation unit (Fig.2/3) indicating which measurement sensor (Fig.1) measured the deviating data. In Fig.3, the various measurement sensors (Fig.1) are distributed over the individual floors and the display (Fig.2/4) shows, for example, measurement sensor (Fig.3/2) attic. At the same time, one output (Fig.2/5) or all outputs are switched and the alarm devices connected to them, e.g. sirens, generate an alarm sound.

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List of reference symbols:

Fig.l
Transducer

1 - CPU of the sensor in ASIC * technology

2 - Carrier board of the sensor with contact surfaces

3 - Contact surfaces for connecting the sensor and the antenna coil

4 - Packaging of the entire sensor (PU or epoxy laminate)

5 - Antenna coil of the sensor for energy and data transmission

6 - Connection cable to the sensor

7 - Sensor (different sensors depending on the application)

Evaluation unit for the measuring sensors

1 - Antenna for radiating an electromagnetic field for energy and

Data transfer

2 - Controller for generating the electromagnetic field and CPU

for evaluating the data from the sensor

3 - Evaluation unit in the housing

4 - Display to show the measured data and operating status

the measuring sensor and evaluation unit

5 - Outputs for alarm messages to other systems, or for controlling

of sirens, flashing lights. Depending on the sensor, an assigned output is switched

Example: Monitoring with various sensors in a residential building

1 - Evaluation unit

2 - various sensors

3 - Electromagnetic field generated by the evaluation unit/antenna for

Energy and data transmission

* ASIC = Application Specified Integrated Circuits (integrated electronic component developed for an application)

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Claims (3)

• protection_claims_registration.doc Protection claims: Contactless and wireless sensor for monitoring gas, smoke, water and temperature data. With an evaluation unit that works on RFID (radio frequency) 1. Sensor that provides the necessary energy for measuring values via a
Electromagnetic field and the measured data over the same
Electromagnetic field and therefore does not require its own battery or a
Voltage supply required. 2. The sensor can be equipped with different sensors depending on the application. 3. Clear identification of the measuring sensors by assigning different i
Identification numbers of the measuring sensors.