Automated Environmental Control Systems In Composting And Mushroom Growing

AKS Controller for Industrial Mushroom Growing

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AKS is a mushroom growing controller designed for automatic environmental control in a growing room of all mushroom types: button mushroom (Agaricus), oyster mushroom (Pleurotus), shiitake mushroom (Lentinula edodes), etc. AKS controller is used for large-scale mushroom growing farms with a high level of climate automatization. It measures air, water and compost temperatures, air relative humidity, CO2 concentration. The climate is controlled with outside air, circulation, chilling, heating, drying and humidification. The individual control algorithms are realized for each of seven growing subphases. The algorithms can operate in both manual and automatic modes. Additional subphases, like steaming, disinfection and etc. can be activated by pulling external switches on the AKS panel board.

AKS controls the entire process, from the moment of loading with new compost till the time of emptying.

The controller can be connected to PC via RS485 communication interface. TechnologSoft Mushroom Edition Software enables to control environmental parameters and react all alarm situations from your PC. The remote control of AKS is also possible through Internet and TeamViewer Software.

 

Functions

  • Air temperature measurement in a growing room and in several points of airduct
  • Compost temperature measurement in four and more points
  • Calculation of average compost temperature by four and more temperature probes
  • Calculation of compost and air temperature change rate
  • Control of CO2 concentration in the air
  • Automatic control of air humidification and dehumidification in a growing room
  • Automatic control of air cooling and heating in a growing room
  • Automatic maintenance of set compost and air temperature speed
  • Control of set parameters in manual or automatic mode
  • Program setting parameters, modes, control ranges of actuators and duration for each of seven phases
  • Setting the priority control for each of seven growing phases
  • Cooling and drying with usage of Outside Air Humidity & Temperature Transmitter (option)
  • Automatic or manual switch from one phase to another using climatic parameters set by a technologist
  • Diagnostics of probes and actuators
  • Alarm signaling of sensor failure and parameter deviation
  • Data transfer to PC via RS485 communication interface
  • Saving the settings and control parameters in nonvolatile memory
  • Remote PC control of the whole production process

Basic Specifications

Temperature Range 0 to 100°С
Temperature Accuracy 0.1°C
Relative Humidity (RH) Range 40 to 100% RH
RH Accuracy max 2% RH
Supply Voltage 220 VAC±10%
Power Consumption max 18 W
Panel Board Dimensions (HxWxD) 500х420х130 mm

 

Controller's Design

AKS controller consists of the master controller on the DIN rail mounted inside of the plastic panel board and operator panel with TFT display on the front panel. 

It also includes two 24VDC power supply units for actuators, 12 VDC power supply unit for RH probe fan, surge protector, key switch lock and external switches for setting operating modes and alarm lamps. The controller has a significant reserve of inputs and outputs. It is also possible to commutate other nonstandard input and output types.

AKS Controller can be supplied with TechnologSoft software for PC remote control. It all allows to choose individual configuration for customized applications and customer wishes.

Environmental Сontrol in a Growing Room

1...4 - Compost temperature probes
5 - Room air temperature probe
6 - Inlet air temperature probe
7 - After cold coil air temperature probe

8 - Mixed air temperature probe
9 - Outside air temperature probe
10 - Air humidity sensor (capacitive)
11 - Aspiration psychrometer (wet & dry)

12 - CO2 transmitter (oyster) or suction tube for CO2 panel board (button)
13 - Hot water valve
14 - Cold water valve

15 - Outside air damper
16 - Circulation air damper

17 - Inlet fan VFD
18 - Inlet fan

19 - Exhaust fan
20 - Overpressure damper

21 - Humidifier valve
22 - Humidifier

23 - Droplet eliminator for air drying
24 - AKS Controller
25 - Outside air humidity & temperature probe
26 - Hot water temperature probe in boiler

27 - Cold water temperature probe in chiller
28 - Exhaust fan VFD
29 - Pressure controller

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