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Published: 02.04.2019

CVD-112 Security sensor


Security detector CVD-112 (hereinafter referred to as the detector) is designed to create an alarm line on metal mesh-wire fencing in order to detect intruders impacting on it, when trying to overcome.

Scope of Security Detector CVD-112 delivery:  

  • Security detector processing unit – 1 pc.;
  • CVD-930 unit –1 pc.;
  • Connecting cable – 1 pc.
  • Cable sensing element set for detectors CVD-111, CVD-112* (hereinafter referred to as CSE set) – 1 set.

* – Type (set/half-set) is defined by purchase order.

The detector’s operating principle is triboelectric (conversion of the mechanical fencing vibrations that occurs, when the intruder overcomes it, into electrical signals). The detector has separate channels for connecting HF and LF triboelectric cables providing for issuing the alarm signal, when vibration or partial destruction of the fence is detected. 

Structurally, the detector is a security detector processing unit, which cable sensitive elements are connected to (from CSE set or half-set). The security detector processing unit power supply and radio communication is provided by CVD-930 unit. 

CVD -930 unit is made in a metal body equipped with storage batteries, solar module for maintaining battery charge, radio modem with antenna and charger.

Four sections of a special cable are used in the detector as a CSE to convert mechanical vibrations of the mesh-wire fence into electrical signals based on the contact electrification effect (triboelectric effect). Each CSE is an extended cylindrical capacitor, between two plates of which electric charge generates, when it vibrates or deforms.

When the intruder overcomes the fencing system by climbing over or cutting it, CSE generates electrical signals entering the security detector processing unit, where signals are processed according to a specific algorithm and trip command is transmitted via CVD-930 unit to the data collection and processing system.

BRDM unit is intended for reception of alarms from the detector. 

The detector feature is the intelligent adaptive signal processing algorithm to reduce the number of false alarms, including when environmental conditions change.

Detector CVD-112 provides for self-monitoring and performance diagnostics.

The detector is configured in the configurator using CVD-4920 tuning cord (it is not included in the delivery set and is purchased at an additional cost).   

For mounting the cable sensing element to the mesh-wire fencing, there are additional sets of mounting parts KMCh-SP and KMCh-SK. Number of plates in KMCh-SP sets of mounting parts – 1,000 pcs., in KMCh-SK – 2,000 pcs.

Scope of Application

Security detector CVD-112 can serve as an independent level of security, and can be used as part of integrated facility security systems together with detecting means of other operating principles.  

Security detector CVD-112 is used as "Radio Border" perimeter security system developed by Stilsoft.  

Parameter Value
Protection section length, m, when using
- CSE set
- CSE half-set

2 lines up to 250m
1 line up to 250m (or 2 lines with total length of 250m)
Detection probability 0.95
Alarm message
- Transmission frequency, MHz
- Radiated power, not more, mW

Maximum transmission range of alarm message under direct visibility conditions, m 1,000
Guaranteed transmission range of alarm message under direct visibility conditions, at least, m 1,000
The number of detectors in the area of the alarm receiver operation, max., pcs. 63
Readiness time after power-on, s 60
Restoring time after alarming, s 10
Alarm duration, s from 1 to 60
DC power voltage, V 12 ± 10%
SB total capacity, Ah 7
Current consumption, max., mA 45
Operation mode Continuous
Version IP65
Informational contents 15
Operating temperature range, °С from -40 to +50
Overall dimensions, mm
- of security detector processing
- unit CVD-930 without bracket and antenna

Weight, max., kg
- of security detector processing
- unit CVD-930 without bracket

Number of lines, pcs.
- CSE set
- CSE half-set

4 x 250m
2 x 250 m
Length of tuning cord CVD-4920, max., m 6