CN102147624A

CN102147624A - Water level controller with two detecting lines

Info

Publication number: CN102147624A
Application number: CN 201110133528
Authority: CN
Inventors: 刘昭利
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-17
Filing date: 2011-05-17
Publication date: 2011-08-10
Anticipated expiration: 2031-05-17
Also published as: CN102147624B

Abstract

The invention relates to a water level controller with two detecting lines. The water level controller consists of a direct current (DC) power supply, an exploring electrode circuit, a Schmidt triggering circuit, a working condition indicating circuit, a relay J and a control circuit. For an originally introduced product, a water tower can automatically control water drawing, and a circuit of the product needs three or more than three water level detecting signal lines. As the water tower or a water tank is further away from a water pump, in order to save line materials and reduce wiring trouble, the water level controller with the two detecting lines only adopts two detecting signal lines to form a water level automatic-control circuit with three detecting electrodes so as to control the operation of the water pump. As the number of the detecting signal lines of the circuit is reduced, the detecting lines are convenient to maintain, thereby improving the stability and the reliability of circuit operation; and compared with the like products, the water level controller has the characteristics of good generality, high reliability and the like and is simple and convenient to install and use.

Description

With two water level controllers of surveying line

Technical field

The invention belongs to the electron controls technology field, is about two water level controllers of surveying line of a kind of usefulness.

Background technology

Water tower is widely used in the little high-rise water storage in city as water storage facility or secondary booster supplies water, be applied to rural households' domestic water or agricultural irrigation water, also be applicable to the automatic control of liquid level or the liquid level warning such as water tower, water tank, tank of industrial and mining enterprises, controlled medium can be clear water or sanitary sewage or conducting solution.Overflowing and empty generation of taking out phenomenon for fear of liquid, is the conservation of power resource also, has many water towers still to adopt manual type to start water pump and draws water, and so often is difficult to reach control promptly and accurately, and time-consuming, effort.The water tower of in the past introducing is controlled the product that draws water automatically, and the detectable signal line of its circuit need use the water-level detecting signal wire more than 3 or 3 mostly.Because the distance of water tower or water tank and water pump is far away, in order to save wire rod and to reduce the difficulty that connects up and maintain easily, the present invention only forms the water level automatic control circuit of 3 exploring electrodes with two detectable signal lines, be used for controlling the automatic operation of water pump.Because of the quantity of the detectable signal line of having simplified circuit, thereby the stability and the reliability of circuit operation have been strengthened.Have easy, the characteristics such as versatility good, reliability height of installing and using with respect to like product.

Below describe two of usefulness of the present invention in detail and survey the correlation technique content that the water level controller of line relates in manufacturing process.

Summary of the invention

Goal of the invention and beneficial effect: the water tower of in the past introducing is controlled the product that draws water automatically, and the water-level detecting signal wire in its circuit need use more than 3 or 3 mostly.Because the distance of water tower or water tank and water pump is far away, for saving wire rod and reducing the trouble that connects up and maintain easily, two of usefulness of the present invention are surveyed the water level controller of line only with the water level automatic control circuit of 3 exploring electrodes of two detectable signal lines formation, are used for controlling the operation of water pump.Because of the quantity of the detectable signal line of having simplified circuit, made things convenient for and surveyed the maintenance of line, thereby strengthened the stability and the reliability of circuit operation, have easy, the characteristics such as versatility good, reliability height of installing and using with respect to like product.

Technical characterictic: with two water level controllers of surveying line, form, it is characterized in that by direct supply DC, exploring electrode circuit, schmidt trigger circuit, duty indicating circuit, relay J and control circuit thereof:

The exploring electrode circuit is made of exploring electrode A, exploring electrode B, exploring electrode C and voltage stabilizing diode DW, its connection features is: the negative pole of exploring electrode A, voltage stabilizing diode DW links to each other with the positive pole of electrochemical capacitor C1, the positive pole of voltage stabilizing diode DW meets exploring electrode B, and exploring electrode C connects the negative pole of electrochemical capacitor C1;

The negative pole of one termination electrochemical capacitor C1 of 2 pin of the time base circuit IC1 in the schmidt trigger circuit and 6 pin and resistance R 1, the other end connection circuit ground GND of 1 pin of time base circuit IC1 and resistance R 1, the positive pole of electrochemical capacitor C1 meets the anodal VCC of direct supply DC, 4 pin of time base circuit IC1 and 8 pin meet the anodal VCC of direct supply DC, 5 pin of time base circuit IC1 connect an end of capacitor C 2, the other end connection circuit ground GND of capacitor C 2;

The connection features of relay J and control circuit thereof is: the end of the 3 pin connecting resistance R2 of time base circuit IC1, the base stage of another termination NPN type triode VT1 of resistance R 2, the collector of NPN type triode VT1 is with succeeding an end of electrical equipment J coil and the positive pole of silicon rectifier diode D1, the negative pole of the other end of relay J coil and silicon rectifier diode D1 meets the anodal VCC of direct supply DC, the emitter connection circuit ground GND of NPN type triode VT1.

Components and parts annexation each other in other partial circuits

The duty indicating circuit: the positive pole of LED connects the base stage of NPN type triode VT1, the negative pole connection circuit ground GND of LED.

The circuit working principle:

Relay J in the accompanying drawing 1 is the working power that is used for controlling water pump, and electrochemical capacitor C1 is in order to eliminate the interference on the detectable signal line, and time base circuit IC1 is connected into schmidt trigger circuit, utilizes its return difference characteristic to reach the purpose that circuit state keeps.

Automatically draw water: when the decline of water table in the water tower is lower than exploring electrode C, exploring electrode C is unsettled, 2 pin of time base circuit IC1 are lower than 1/3VCC, the 3 pin output high level of time base circuit IC1, LED is lighted, the coil of relay J gets and makes the normally opened contact adhesive after electric, connects pump power and begins to draw water, and the water level in the water tower rises gradually;

State keeps: when water level rises to exploring electrode B between exploring electrode C the time, voltage stabilizing diode DW is connected in series into circuit, and a point current potential is controlled in about 1/2VCC in this moment circuit, and Schmitt trigger circuit will keep original duty constant;

Stop pumping: when water level rises to exploring electrode A, because the resistance of water or conducting liquid is less, the current potential that a is ordered in the circuit is higher than 2/3VCC so, the 3 pin output low levels of time base circuit IC1, LED extinguishes, the coil blackout of relay J and normally opened contact is discharged, Pump Failure stops pumping, and such circulation like this can reach automatically the purpose of drawing water, keep water level.

Description of drawings

Accompanying drawing 1 is to the invention provides two embodiment circuit working schematic diagrams of surveying the water level controller of line of a usefulness, two of overstriking lines are the lead-in wire of water-level detecting signal in the circuit theory diagrams, A is the peak level exploring electrode, C is the lowest water level exploring electrode, the negative pole connection circuit ground GND of direct supply DC.

Embodiment

According to shown in the accompanying drawing 1 with two circuit working schematic diagram and description of drawings of surveying the water level controller of lines, and according to the described each several part circuit of foregoing invention content form and circuit in annexation between the components and parts, and the described components and parts technical parameter of embodiment requires to implement to realize the present invention.

The selection of components and parts and technical parameter thereof

IC1 is a time base circuit in the accompanying drawing 1, and model is NE555, and it is 8 pin DIP encapsulation, and the function of each pin is respectively: 1 pin is circuit ground; 2 pin are trigger end; 3 pin output terminals; 4 pin preset ends; 5 pin are control voltage; 6 pin thresholdings (threshold value); 7 pin are discharge end; 8 pin are positive source;

VT1 is a NPN type triode, selects silicon triodes such as 2SC9013 or 3DG12 for use, requires current amplification factor β＞80;

DW is a voltage stabilizing diode, requires voltage stabilizing value 4.5V, power 0.5W; D1 is a silicon rectifier diode, and model is 1N4001; LED is ￠ 5 red light emitting diodes;

Resistance is all selected the 1/4W metalfilmresistor for use, and the resistance of resistance R 1 is 22K Ω, and the resistance of resistance R 2 is 1.2K Ω;

C1, C3 are electrochemical capacitor, and its capacity is respectively 4.7 μ F/16V, 1000 μ F/16V; C2 is a Leaded Ceramic Disc Capacitor, and capacity is 0.01 μ F;

J is the 9V DC relay, and relay J has 5 pins, and wherein: the coil of relay J has 2 pins, and its power output has 3 pins, and 3 pins are respectively: the common of relay J (moving contact), stationary contact are divided into normally opened contact and normally closed contact;

DC is a direct supply, can select the D.C. regulated power supply of 9V for use, requires output current 〉=300mA.

Circuit production and debugging

Exploring electrode is made explanation: A is the peak level exploring electrode, and C is the lowest water level exploring electrode.Water-level detection eletrode A, exploring electrode B, exploring electrode C all directly make of the ￠ 1.5mm single strand of copper wire of peelling off rubber, are fixed on the appropriate location of water tower with insulator.Require exploring electrode A, exploring electrode B and exploring electrode C to lean on more mutually, but exploring electrode can not contact each other.The height of 3 exploring electrodes should suitably be adjusted according to the actual motion effect, when the peak level of adjusting to liquid, lowest water level all reach satisfied till.

Fairly simple because of the circuit structure of the water level controller of surveying lines with two, make and be easier to, it is general that the physical connection of components and parts is correct as long as use the performance of components and parts intact, circuit does not need to debug just can operate as normal.

Claims

1. the water level controllers with two detection lines are made up of direct supply DC, exploring electrode circuit, schmidt trigger circuit, duty indicating circuit, relay J and control circuit thereof, it is characterized in that:

Its connection features of schmidt trigger circuit is: the negative pole of a termination electrochemical capacitor C1 of 2 pin of time base circuit IC1 and 6 pin and resistance R 1, the other end connection circuit ground GND of 1 pin of time base circuit IC1 and resistance R 1, the positive pole of electrochemical capacitor C1 meets the anodal VCC of direct supply DC, 4 pin of time base circuit IC1 and 8 pin meet the anodal VCC of direct supply DC, 5 pin of time base circuit IC1 connect an end of capacitor C 2, the other end connection circuit ground GND of capacitor C 2;

2. two water level controllers of surveying line of usefulness according to claim 1, the connection features of duty indicating circuit is: the positive pole of LED connects the base stage of NPN type triode VT1, the negative pole connection circuit ground GND of LED.