Automatic Water Level Wireless Remote Control System

In industry, agriculture and daily life, water for the processing of beverages and foodstuffs, water for chemical production and domestic water supply, etc. People usually use pumps and tanks to form a pumping system. Earlier, people used manual control systems to control the water level in pumps and tanks. Later people used water level sensors and wired controls to automatically control the water level in pumps and tanks. For example, when the water level in the tank is too low, the pump is automatically activated to pump water to raise the water level; or, when starting the motor pumping water, the water pump is automatically shut down once the water level in the tank reaches the proper level. Now we can use more innovative wireless control technology to achieve wireless automatic control of water levels in pumps and tanks. The wireless control system is usually suitable for pump far away from the water tank occasions.

One of our clients told us his trouble. He wanted to control a reasonable pumping level. But the pump was about 100M away from the water tank. He didn’t want to connect a control line from the water tank to the water pump. He found it inconvenient so that he doesn’t consider the traditional wired control solution. He asked us to provide a solution for the radio frequency wireless control system. So we customized a wireless water level automatic control system, the model is 0020525. The system includes a wireless receiver (model S1PU-AC-ANT3, a transmitter (model CB-2), a dry contact transmitter (model CB-2N-2), and two wired water level sensors. The dry contact transmitter CB-2N-2 has three input lines which used to connect two water level sensors. The Receiver Wireless S1PU-AC-ANT3 can be used at 110V, 120V, 220V, 240V and has a relay output for connection to the pump. The receiver has a waterproof case and an external telescopic antenna that can be installed in outdoors. Two wired water level sensors are normally open/dry contact, and they are installed in the water tank. One is installed at a high water level (with the sensor facing up) and the other one is installed at a low water level (with the sensor facing down). This system uses a water level sensor to detect changes in water level and a water level sensor triggers the transmitter to automatically transmit a wireless signal. The receiver receives the signal and automatically turns the pump on or off. This system uses the water level sensor to detect the water level range. The water level sensor triggers the transmitter to automatically transmit the wireless signal according to the set value, and the receiver decoding signal automatically instructs the water pump to turn on or off.

The working principle of the transmitter (model CB-2N-2):

When the transmitter’s input lines 1 and 3 are connected, it automatically transmits a “NO” wireless signal, which is equivalent to the function of the button “ON” on the transmitter.

When the transmitter’s input lines 2 and 3 are connected, it automatically transmits an “OFF” wireless signal, which is equivalent to the function of the button “OFF” on the transmitter.

The working principle of the receiver (model S1PU-AC220-ANT3):

When the receiver receives a “NO” or “OFF” wireless signal, it can actuate its relay to turn the connected pump on or off.

The working principle of Wire water level sensor:

The water level sensor has two lines, they are normally open. When the sensor is triggered, these two lines will be connected to power.

Diagram:

2

When the float is in this state, the two lines are connected.

3

When the float is in this state, the two lines are disconnected.

The working principle of the water level automatic wireless control system:

When the water level in the water tank is lower than the position of the water level sensor 1, two lines of the water level sensor 1 are connected to trigger the transmitter CB-2N-2 to send the RF wireless signal “ON”. When the receiver S1PU-AC-ANT3 receives this signal, it triggers the relay to turn on the pump, which starts pumping water into the tank.

When the water level in the water tank rises to the position of the water level sensor 2, the two wires of the water level sensor 2 are connected to trigger the transmitter CB-2N-2 to send the RF wireless signal “OFF”. When the receiver S1PU-AC-ANT3 receives this signal, it triggers the relay to turn off the pump.

You can also turn the pump on or off at any time by pressing the two buttons on the transmitter / remote CB-2.

When the pump is far away from the tank, we can use this automatic water level control if it is inconvenient to use a wired control series to control the pump. The sensors are wirelessly connected to the receiver, and RF signals can pass through walls, trees, and other obstacles. We no longer need to connect a wired control cable from the tank to the pump. This type of RF wireless control system consists of a normally open contact transmitter and receiver. The transmitter can be connected to a variety of normally open / normally closed output devices, such as the alarm host, cable detectors, sensors, limit switches, PLC programmable logic controller. The receiver can be connected to a variety of DC / AC equipment, such as alarm speakers, lights, motors, motors, electric doors and so on. This set of normally open contactless wireless remote control device mainly uses a device with normally open / normally closed output to wirelessly control another AC or DC device. It can be used in many applications such as water level control in tanks, automatic remote control of industrial equipment and simultaneous remote control of agricultural equipment.

1

How to remote control and monitor ac pump?

With the increasing progress of science and technology, people require the electronic appliance with more automation and intelligence. Now, intelligent control system is adopting wireless remote control technique instead of traditional wire control technique, which can avoid the problems caused by wiring and adding new devices. In order to make the function of the wireless remote control traditional device isn’t limited by distance and space. It’s a more convenient method to be compare with traditional wire control.

Wired control technology:

Wired control technology is a relatively primitive technology. It adopts the pattern of integrated wiring, used in household, agriculture, industry, equipment erection, such as security systems, lighting control, heating, air conditioning, water control, etc., This technology is connected directly to the device through wire connections to achieve a single control or integrated application control function.

Disadvantages:

  1. It is necessary to install a large number of wires, the installation method is complicated, and the wiring cost is too high.
  2. The control panel of operation is fixed, so it is not convenient to use and can’t be freely controlled in any space.

Wireless control technology:

Radio frequency wireless control technology is a novel technology. People first simply connect controlled devices to wireless receivers by a simple wired connection, then achieve the wireless control function of connected devices through the transmitters or remote control.

Advantage:

  1. Simple installation, no need to install a large number of wires, the cost is greatly reduced.
  2. Portable remote control can be carried out in any reliable range for wireless control and convenient operation.
  3. Wireless control technology can achieve wireless control at a considerable distance, such as 1000M or further.

The wireless control system consists of a transmitter or remote control and a receiver. The transmitter or the remote control is made up of the keys, the coding circuit, the modulation circuit, the signal amplifying circuit and the antenna. Working principle of the Transmitter: The transmitter generates a specific signal when the button is pressed. Then this signal is processed by the modulation circuit, coding circuit and high-frequency amplifier circuit. Eventually it generates a radio wave, and this radio wave is emitted by the antenna. The receiver is made up of receiving antennas, RF receiving modules, decoding circuits, driving circuits and relays, and driving circuits and relays must be connected to the controlled devices. Working principle of the receiver: When the transmitter sends a RF wireless signal, the receiver receives this RF wireless signal through the antenna of the RF module, and then the wireless signal is analyzed and determined by the decoding circuit. Finally, according to the specific information of this RF wireless signal, the connected devices can be operated accordingly by driving circuit and relays. For example, a variety of lighting on / off, the door open / closed, the pump on / off operation, the motor forward and reverse control, air conditioning heating or ventilation system control, linear actuators telescopic control, vehicle equipment Wireless control, automation control of agricultural greenhouses, or other industrial equipment movement control and so on.

As we know, Radio frequency signals are transmitted through the media, generally the media is air. There are mainly three factors affecting the working distance of an RF wireless system. One is the receiver’s sensitivity of receiving wireless signals, and the other is the transmitter’s transmit power. The last one is the obstacles between the transmitter and the receiver. Suppose there are some obstacles in the propagation path, such as walls, high buildings, trees, cars, etc. These obstacles will seriously reduce the wireless transmission distance of radio frequency signals. For this reason, we propose two options to solve the problem.

  1. Replace the high-power remote control, ex. the working distance of normal CWB type waterproof remote control is only 50 meters, but the CP type remote control can reach 500 meters, and CB type remote control can reach further 1000 meters.
  2. Replacing the receiver’s RF antenna, using an external antenna with higher receiving sensitivity, such as external telescopic antenna or external magnetic sucker antenna.

One of our customers purchased a wireless remote control device from Carymart online shop, and successfully erected an AC water pump wireless control system, with a control distance of 1000 meters. The wireless pump remote control system includes a receiver (model:S1PX- AC220-ANT3) and a transmitter (model CB-2). This receiver is the ac power output type, and the maximum working current is 30A, it has the waterproof shell and the external telescopic antenna, which can be installed in the outdoor use. However, in practical application, the client encountered another problem that he cannot confirm the working condition of the AC pump from such a long distance through visual and auditory sense. When he presses the button of the remote and opens the ac pump through the receiver, the pump is working, but he can’t confirm the state of the work. Because he couldn’t see the pump, he worried the wireless signal was disturbed by other factors, so that the water pump could not be opened properly. Based on this situation, we have developed a visual status solution. Install a current sensing switch (model 0025011) on the AC pump, then install an indicator light (model 0040026) at the height position. The customer can confirm the working status of the AC pump by observing this indicator light. Working principle of the Current sensing switch: When it detects the current of the wire passing through its inspection hole, it will close its internal contacts and turn on the status indicator.

Their connection diagram and installation diagram as shown below:

 无线遥控抽水马达文章配图

The specific operation of wireless water pump remote control equipment with status indicator are as follows:

When the customer is within reliable control, he first presses the button A on the remote control CB-2. If the receiver normally receives this wireless signal, it will turn on the water pump. At the same time, the status indicator light installed at the top will also be turned on. So the customer can see the status lights in the distance, and confirm the pump is working properly. When the customer presses the button B on the remote to turn off the pump if the receiver normally receives the wireless signal. At the same time, the state indicator light will be extinguished, and the customer can confirm that the pump is in a state of suspended operation.

Such a wireless remote control device can also be equally applied to agricultural long-distance irrigation, household water storage wireless control, garden watering remote control, long-distance control of industrial equipments, remote control offshore platform or onboard equipments.

Water Pump is Remote Controlled by 2000m RF Receiver and Transmitter

Question from customer:

I am looking for a long range relay to control a water pump. The water pump now is controlled by a float switch (on/off) at the reservoir 800 meters away. I have 120 volts at both locations and a relay to start pump.

Answer:

We recommend the 2000m rf AC receiver (S1PUA-AC220-ANT2) and the long range transmitter CB-2N. The receiver is soldered with external extended antenna, which can make its transmission distance at 2000m/6000ft theoretically. It works between AC 100~240V voltage. The maximum working current is 30amps. There are 315Mhz or 433Mhz at your option. The transmitter is special designed because its triggered method is connection and disconnection of two wires. When two wires are connected, the transmitter is triggered and then transmits an rf signal “ON”. When two wires are disconnected, the transmitter is triggered and then transmits an rf signal “OFF”.

remote-controller_1

The wiring method of your water pump will be talked next.

A, B terminals are normally open; A, C terminals are normally closed. Wire Water pump motor to A terminal and N terminal. Add wire to connect B&L terminals. Supply AC 100~240V power to receiver. Connect two wires of transmitter to relay you mentioned.

circuit

Usage:

When two wires of transmitter are connected, the transmitter is triggered and then transmits rf signal “ON”; When the receiver accepts the signal, it will make water pump work.

When two wires of transmitter are disconnected, the transmitter is triggered and then transmits an rf signal “OFF”. When the receiver accepts the signal, it will stop water pump.

 

Water Pump Motor Automation

When you want to remote control your water pump from a long distance with controller or let your water pump work automatically with the help of water level sensor, we think our item-water pump motor automatic control system will help you. This system includes a long range remote receiver (S1PUA-AC220-ANT2), two transmitters (CB-2/CB-2N-2) and two water level sensors.

It can control AC110~240V water pump motors by manual controller or automation with water level sensor.

1_01_1

We will build this water motor automatic control system.

Here is the wiring of receiver and water motor. Wire motor to A terminal and N terminal. Using a wire to connect B terminal and L terminal. And one wire connect N terminal, another wire connect L terminal.

receiver wiring

Here is the installation of transmitter and water level sensor.

Put the water level sensor 1 downwards to the low water level position; Put the water level sensor 2 upwards to the high water level position.

Two wires of the water level sensor 1 are connected to wire 1 and wire 3 of transmitter CB-2N-2.

Two wires of the water level sensor 2 are connected to wire 2 and wire 3 of transmitter CB-2N-2.

Note: Triggering method of transmitter (CB-2N-2): connection to wire 1 and wire 3, it will send signal “ON”, connection to wire 2 and wire 3, it will send signal “OFF”.

transmitter wiring

Operation:

When water reaches the low water level, two wires of the water level sensor 1 is connected and the transmitter is triggered. The transmitter will send an ‘ON”’ signal to the receiver. The receiver will instruct the water pump motor to pump water into the tank.

When water reaches the high water level, two wires of the water level sensor 2 is connected and the transmitter is triggered. The transmitter will send an “OFF” signal to the receiver. The receiver will instruct the water pump motor to stop pumping water.

12V Latched Mode Remote Control for Float Switch Controlling Water Pump

Question from customer:

When the tank is empty my float switch makes contact and stays in this mode till the tank is full.

What I need is for the transmitter to activate the receiver and hold it in the on position till the float switch interrupts the transmitter and releases the receiver. I need a receiver which is only activated as long as the transmitter sends a signal. Or I need a way to make the transmitter send a signal when the float switch makes contact, then interrupts this signal and sends a second signal when the float switch interrupts contact.

water-tank

Float_switch

Answer:

We recommend the model of normally open latched 2000m remote controller (S1L-DC12-ANT2 & CB-2N). The receiver is with magnetic antenna and only one working mode—latched mode. It is activated the 12V power. The transmitter is designed with novelty. There are two wires extending from transmitter. The triggering method is connection and disconnection of two wires. When two wires are connected, “ON” signal will be sent out. When two wires are connected, “OFF” signal will be sent out.

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Wires on the transmitter should be connected to the contacts of float switch.

transmitter circuit

The normally open contacts B&C of receiver should be connected to the water pump.

receiver circuit

When the tank is empty, the contacts of float switch are closed, the transmitter is triggered and then transmits an rf signal “ON” to activate the receiver. After the receiver receives the signal, contacts B&C are closed; the pump starts to work.

When the tank is full, the contacts of float switch are cut, the transmitter is triggered and then transmits an rf signal “OFF” to deactivate the receiver. After the receiver receives the signal, contacts B&C are cut; the pump stops working.