CN201654569U - Digital display water level automatic control alarm instrument - Google Patents
Digital display water level automatic control alarm instrument Download PDFInfo
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- CN201654569U CN201654569U CN2010200100558U CN201020010055U CN201654569U CN 201654569 U CN201654569 U CN 201654569U CN 2010200100558 U CN2010200100558 U CN 2010200100558U CN 201020010055 U CN201020010055 U CN 201020010055U CN 201654569 U CN201654569 U CN 201654569U
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Abstract
The utility model discloses a digital display water level automatic control alarm instrument, which comprises a sensor and a display instrument, wherein the sensor comprises a shell and a detection circuit board which is arranged in the shell, the detection circuit board is provided with two groups of connection terminals which are a, b and c, d, wherein the a and the b ends are respectively connected with e and f ends of the display instrument through two wires, a c end on the detection circuit board is connected with one end of a sensing test wire L, and the other end of the sensing test wire L is vertically put in water. The d end is connected with one end of a ground probe T, and the other end of the ground probe T is connected with a container for bearing water in common ground. The display instrument comprises a shell and a circuit bard which is arranged in the shell, wherein the circuit board is provided with a pre-amplifier unit, a counting unit, a driving execution unit, a 24 V connection terminal, e and f ends, high level alarm output ends p, q, low level alarm output ends m, n and external water pump control ends x, y and z, and the e and the f ends are connected with two wires of the sensor through transmitting. The digital display water level automatic control alarm instrument has scientific design, excellent practical effect and steady and reliable performance, and has excellent development prospect.
Description
Technical field
The utility model relates to water-level control apparatus, be specifically related to be utilize the instrument electric capacity variation control water level height, simple, a kind of easily digital display water level of adjustment automatic control alarm instrument be installed.
Background technology
As seen the height of water level looks around people's life, therefore, people begin water level is measured and controlled very early, and are at present varied to the methods of level measuring, are roughly laser detection, infrared ray test, pressure detection, capacitance detecting method or the like in principle.Why so various exactly because every kind of method all more or less exists shortcoming and defect the method that detects is, concludes to get up to be roughly:
1, complex structure, installation inconvenience; Usually the structure of the higher measuring appliance of precision is all very complicated to making from principle, and especially installing more needs cautiously, will guarantee absolute level or vertical sometimes.Cost is just high naturally, and maintenance capacity is also big.
2, measuring accuracy differs; The at present on-the-spot floodometer meter accuracy Gao Keda 0.1 that uses or 0.2 grade of detecting on the spot, what precision was low reaches 1 grade or 1.5 grades, differential very big mutually, naturally bring a series of problems because of precision is different, such as instrument selection, daily servicing, cost expenditure etc., additionally bring unnecessary tired brain can for the user.
3, stability, reliability is uneven; Usually precision than the water level detecting utensil at the end in use for a long time, the detection data disunity of uplink and downlink, variation is big, reliability is relatively poor.
Lack at present precision be suitable for on-the-spot use, install again convenient, adjustment is also simple, stable performance, water level detection gauge that cost performance is suitable.
The utility model content
The purpose of this utility model is to exist above-mentioned shortcoming and problem at the current water level detector, and provide that easy for installation, adjustment is simple, stable performance, a kind of digital display water level automatic control alarm instrument that maintenance is little.
The technical scheme that adopts is:
A kind of digital display water level automatic control alarm instrument comprises sensor and Displaying Meter; Described sensor comprises housing and is contained in the interior detection line plate of housing, described detection line plate is provided with a, b and c, d two set of connections terminals, wherein a, b two ends are connected with e, the f two ends of Displaying Meter by two leads (being two-wire system) are corresponding respectively, c end on the detection line plate of sensor is connected with the end of sensing testing line L, the d end is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water; Sensing testing line L is that single core is provided with the insulation sheath lead outward, and the other end of sensing testing line L vertically is placed in the water of carrying water receptacle;
Above-mentioned Displaying Meter, comprise shell and cased circuit board, described circuit board is provided with pre-amplifier unit, counting unit, drives execution element, 24V terminals, transmits e, f two ends and full level alarm output end p, the q that is connected, low alarm output terminal m, n and outer water pump control end x, y, z with sensor two lines; Wherein z is the safety ground end;
Above-mentioned detection line plate is provided with chip U6, and 1 pin of chip U6 is connected with the c end by variable resistor VR101; When being connected with the c end behind 2 pin of chip U6 and the 6 pin short circuits, by capacitor C 103 ground connection, the direct ground connection of 7 pin of chip U6; 4 pin, 10 pin and 14 pin connect diode D101 negative pole simultaneously, the anodal a end that connects of diode D101,5 pin of chip U6 are connected with the base stage of triode Q101 and Q102 with R104 is corresponding through resistance R 101 respectively with 9 pin, the emitter of triode Q101 and Q102 is corresponding with D103 through diode D102 respectively to be connected with the negative pole of diode D101 with a end of two-wire system terminals, and the collector of triode Q101 and Q102 is respectively through resistance R 102 and R106 ground connection; The c end of detection line plate is connected with the upper end of sensing testing line L; The d end of detection line plate is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water;
The pre-amplifier unit of above-mentioned Displaying Meter is made of chip U1, when 2 pin of chip U1 and 6 pin short circuits pass through resistance R 2 ground connection, connect the positive pole of diode D2 and the negative pole of diode D1, the positive pole of diode D1 is connected with the 24V power end by resistance R 1 simultaneously, again by stabilivolt WD1 ground connection, be connected with light emitting diode LD5 is anodal again simultaneously, the negative pole of light emitting diode LD5 is connected with the e end, and f holds ground connection; 3 pin of chip U1 and 11 pin are respectively through capacitor C 5 and C6 ground connection, 7 pin ground connection, the output terminal that 4 pin and 14 pin meet three end automatic voltage regulation power supply chip U7 simultaneously is a positive supply, the input end of three end automatic voltage regulation power supply chip U7 is connected with the 24V power supply, in the time of 8 pin of chip U1 and 12 pin short circuits, be connected with 13 pin of chip U1 by resistance R 4, and through capacitor C 4 ground connection.5 pin of chip U1 and 10 pin short circuits join through 15 pin of capacitor C 9 with drives execution element chip U3 when capacitor C 7 connects 5 pin of counting unit chip U2.
Above-mentioned Displaying Meter counting unit comprises chip U2 and eight sections charactrons, 1,15,14,13,12,3 of chip U2 distinguishes correspondence with 2 pin and is connected with the associated end pin of eight sections charactron U8,4,6,8 pin of chip U2 are ground connection respectively, 16 pin are connected with the output terminal positive supply of three-terminal voltage-stabilizing power supply, and 5 pin and 7 pin are respectively by resistance R 5, R7 ground connection.The drive end pin of above-mentioned eight sections charactrons is connected through the collector of resistance R 8 with triode Q2, and the emitter of triode Q2 connects positive supply through diode D6, and the base stage of triode Q2 is connected through 9 pin of resistance R 10 with the chip U4 of drives execution element;
Above-mentioned drives execution element is made up of chip U3, U4 and U5, and chip U3 is the promotion utmost point of drives execution element, and its output is divided into three the tunnel, and wherein two-way is controlled high and low water-level alarm, the Kai Heguan of another road control water pump;
Above-mentioned control high-low water alarm circuit is made of two groups of members circuit all identical with connection, 11 pin of chip U3 and 3 pin are two groups of output terminal pin, respectively by diode D11, corresponding and the resistance R 21 of D13, it is corresponding respectively when the end of R24 connects by capacitor C 18, resistance R 20 and capacitor C 20, resistance R 23 ground connection, the other end of resistance R 21 and resistance R 24 is corresponding to be connected with 12 pin with 2 pin of chip U5,2 pin and 12 pin are corresponding to respectively capacitor C 19, resistance R 22 and capacitor C 21 and resistance R 25 ground connection, and corresponding respectively and 6 pin, 8 pin short circuits, 3 pin of chip U5,11 pin are respectively by capacitor C 22, C23 ground connection, the direct ground connection of 7 pin, 4 pin, 10 pin, 14 pin connect positive supply; 5 pin of chip U5 and 9 pin are that two groups of output loops are controlled high and low water level respectively, corresponding respectively a end by relay J 2, J3 coil, the other end of relay J 2, J3 coil is connected with m with terminals p respectively, q is connected with positive supply with the n end, 5 pin and 9 pin are respectively by capacitor C 24 and C25 ground connection, simultaneously corresponding parallel resistance R26, light emitting diode LD3 and resistance R 27, light emitting diode LD4 respectively between 5 pin and 9 pin and the positive supply.
Another road output of chip U3, the pi type filter of being made up of by diode D7 connection capacitor C 11, C12, resistance R 14 9 pin is connected with 2 pin of chip U4 respectively; With by 2 pin by diode D8 respectively through capacitor C 13, resistance R 17 ground connection time, be connected with triode Q3 base stage through stabilivolt WD2, the county of emission ground connection of Q3, the collector of Q3 is connected with 6 pin of chip U4 through resistance R 16.
3 pin of chip U4 and 11 pin are respectively through capacitor C 15, C14 ground connection, the direct ground connection of 7 pin, and 4 pin, 14 pin, 10 pin connect positive supply simultaneously; When the output of 5 pin of chip U4 was connected with coil one end of relay J 1, successively by light emitting diode LD2, resistance R 19 ground connection, meanwhile first after light emitting diode LD1, resistance R 18 connect positive supply, and the 5 pin while is through capacitor C 17 ground connection.The coil other end of relay J 1 is connected with terminals y, and terminals x connects positive supply;
The 10 foot meridian capacitor C8 one tunnel of said chip U1 are through diode D5 ground connection, another road is connected with the base stage of resistance R 9 with triode Q1 through diode D4, the grounded emitter of diode Q1, the collector of Q1 connects positive supply through resistance R 11, the collector output of Q1 links to each other with 12 pin with 8 pin of chip U4, and through capacitor C 16 ground connection.
The base resistance R9 of above-mentioned triode Q1 and the tie point of diode D4 are connected and together are connected with 9 pin of chip U4 with negative pole with diode D2 through diode D3 in the time of capacitor C 10 ground connection; The positive pole of diode D2 is connected with 2 pin of chip U2.
Principle of work:
Water in the container form electric capacity by insulation course between sensing testing line L and the water, so the height of water level has just become the size of electric capacity by grounded probe ground connection.This electric capacity converts corresponding square wave to by integrated package U6, sends into power supply by triode Q101 and has finished detection and the output (referring to accompanying drawing 1-3) of sensor to water level.
When sensor was powered, the square-wave signal that D1, R2 send here sensor detected Displaying Meter by R1, LD5.By chip U1 amplification, shaping, and convert of the 9 pin output of digital quantity parameter to from chip U1; Chip U2 counting back promotes eight sections charactrons and shows water level; Chip U3 counting back control chip U4, U5 drive relay J 1, J2, J3 carry out the water level control and the output of reporting to the police.Finished the function of water level digital display, control, warning.In the Displaying Meter owing to increased elements such as C8, D4, D5, C10, transducing signal is lost after, produce the fault alarm effect.The operation of the equipment of giving provides safe guarantee.
Characteristics:
1, insulated conductor sensed water level: utilize the method for the capacitance detecting water level between sensing testing line L and the water, make installation simpler, easy to adjust, the life-span is longer.
2, two-wire system sensing: utilize the supply lines transmission water level signal of sensor, saved lead.
3, fault alarm function: utilize C8, D4, D5, C10 that the water level signal of sensor backspace is detected, if water level signal disappears, 9 pin of U4 will become electronegative potential and report to the police after time-delay, and self-locking.Guarantee the safe operation of equipment.
4, adopt digital show water level, duty, warning etc., clear display is directly perceived.
5, detecting sensor duty: LD5 is that the working sensor state shows light emitting diode, correctly insert sense line after, its state is that earlier bright back is dark, if do not work or bright after secretly be not connecting line reversal connection or open circuit or short circuit between sensor and the Displaying Meter.
The utility model design science, reasonable, original, practical function is excellent, the efficient height is installed simply, easy to maintenance, stable and reliable for performance, has development prospect preferably.
Description of drawings
Fig. 1 is that the utility model is installed connection diagram.
Fig. 2 is the detection line plate circuit theory diagrams of the utility model sensor.
Fig. 3 is the board circuit figure of the utility model Displaying Meter.
Embodiment
Embodiment
A kind of digital display water level automatic control alarm instrument comprises sensor 1 and Displaying Meter 2; Described sensor 1 comprises housing 3 and is contained in detection line plate 4 in the housing 3, described detection line plate 4 is provided with a, b and c, d two set of connections terminals, wherein a, b two ends are connected with e, the f two ends of Displaying Meter 2 by two leads (being two-wire system) are corresponding respectively, c end on the detection line plate 4 of sensor 1 is connected with the end of sensing testing line L, the d end is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water; Sensing testing line L is that single core is provided with the insulation sheath lead outward, and the other end of sensing testing line L vertically is placed in the water of carrying water receptacle;
Above-mentioned Displaying Meter 2, comprise shell 5 and be contained in circuit board 6 in the shell 5, circuit board 6 be provided with pre-amplifier unit, counting unit, drives execution element, 24V terminals, with e, f two ends and full level alarm output end p, the q of 1 liang of line transmission of sensor, low alarm output terminal m, n and outer water pump control end x, y, z; Wherein z is the safety ground end;
Above-mentioned detection line plate 4 is provided with chip U6, and chip U6 adopts the integrated circuit of 556 models, and 1 pin of chip U6 is connected with the c end by variable resistor VR101; When being connected with the c end behind 2 pin of chip U6 and the 6 pin short circuits, by capacitor C 103 ground connection, the direct ground connection of 7 pin of chip U6; 4 pin, 10 pin and 14 pin connect diode D101 negative pole simultaneously, the anodal a end that connects of diode D101,5 pin of chip U6 are connected with the base stage of triode Q101 and Q102 with R104 is corresponding through resistance R 101 respectively with 9 pin, the emitter of triode Q101 and Q102 is corresponding with D103 through diode D102 respectively to be connected with the negative pole of diode D101 with a end of two-wire system terminals, and the collector of triode Q101 and Q102 is respectively through resistance R 102 and R106 ground connection; The c end of detection line plate 4 is connected with the upper end of sensing testing line L; The d end of detection line plate 4 is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water;
The pre-amplifier unit of above-mentioned Displaying Meter 2 is made of chip U1, chip U1 adopts the integrated circuit of 556 models, when 2 pin of chip U1 and 6 pin short circuits pass through resistance R 2 ground connection, connect the positive pole of diode D2 and the negative pole of diode D1, the positive pole of diode D1 is connected with the 24V power end by resistance R 1 simultaneously, again by stabilivolt WD1 ground connection, is connected with light emitting diode LD5 is anodal again simultaneously, the negative pole of light emitting diode LD5 is connected with the e end, and f holds ground connection; 3 pin of chip U1 and 11 pin are respectively through capacitor C 5 and C6 ground connection, 7 pin ground connection, the output terminal that 4 pin and 14 pin meet three end automatic voltage regulation power supply chip U7 simultaneously is a positive supply, the input end of three end automatic voltage regulation power supply chip U7 is connected with the 24V power supply, in the time of 8 pin of chip U1 and 12 pin short circuits, be connected with 13 pin of chip U1 by resistance R 4, and through capacitor C 4 ground connection.5 pin of chip U1 and 10 pin short circuits join through 15 pin of capacitor C 9 with drives execution element chip U3 when capacitor C 7 connects 5 pin of counting unit chip U2.
Above-mentioned Displaying Meter 2 counting units comprise chip U2 and eight sections charactrons, chip U2 adopts the integrated circuit of 40110 models, 1,15,14,13,12,3 of chip U2 distinguishes correspondence with 2 pin and is connected with the associated end pin of eight sections charactron U8,4,6,8 pin of chip U2 are ground connection respectively, 16 pin are connected with the output terminal positive supply of three-terminal voltage-stabilizing power supply, and 5 pin and 7 pin are respectively by resistance R 5, R7 ground connection.The drive end pin of above-mentioned eight sections charactrons is connected through the collector of resistance R 8 with triode Q2, and the emitter of triode Q2 connects positive supply through diode D6, and the base stage of triode Q2 is connected through 9 pin of resistance R 10 with the chip U4 of drives execution element;
Above-mentioned drives execution element is made up of chip U3, U4 and U5, chip U3 adopts the integrated circuit of 4017 models, chip U4 adopts the integrated circuit of 556 models, chip U5 adopts the integrated circuit of 556 models, chip U3 is the promotion utmost point of drives execution element, its output is divided into three the tunnel, and wherein two-way is controlled high and low water-level alarm, the Kai Heguan of another road control water pump;
Above-mentioned control high-low water alarm circuit is made of two groups of members circuit all identical with connection, 11 pin of chip U3 and 3 pin are two groups of output terminal pin, respectively by diode D11, corresponding and the resistance R 21 of D13, it is corresponding respectively when the end of R24 connects by capacitor C 18, resistance R 20 and capacitor C 20, resistance R 23 ground connection, the other end of resistance R 21 and resistance R 24 is corresponding to be connected with 12 pin with 2 pin of chip U5,2 pin and 12 pin are corresponding to respectively capacitor C 19, resistance R 22 and capacitor C 21 and resistance R 25 ground connection, and corresponding respectively and 6 pin, 8 pin short circuits, 3 pin of chip U5,11 pin are respectively by capacitor C 22, C23 ground connection, the direct ground connection of 7 pin, 4 pin, 10 pin, 14 pin connect positive supply; 5 pin of chip U5 and 9 pin are that two groups of output loops are controlled high and low water level respectively, corresponding respectively a end by relay J 2, J3 coil, the other end of relay J 2, J3 coil is connected with m with terminals p respectively, q is connected with positive supply with the n end, 5 pin and 9 pin are respectively by capacitor C 24 and C25 ground connection, simultaneously corresponding parallel resistance R26, light emitting diode LD3 and resistance R 27, light emitting diode LD4 respectively between 5 pin and 9 pin and the positive supply.
Another road output of chip U3, the pi type filter of being made up of by diode D7 connection capacitor C 11, C12, resistance R 14 9 pin is connected with 2 pin of chip U4 respectively; With by 2 pin by diode D8 respectively through capacitor C 13, resistance R 17 ground connection time, be connected with triode Q3 base stage through stabilivolt WD2, the county of emission ground connection of Q3, the collector of Q3 is connected with 6 pin of chip U4 through resistance R 16.
3 pin of chip U4 and 11 pin are respectively through capacitor C 15, C14 ground connection, the direct ground connection of 7 pin, and 4 pin, 14 pin, 10 pin connect positive supply simultaneously; When the output of 5 pin of chip U4 was connected with coil one end of relay J 1, successively by light emitting diode LD2, resistance R 19 ground connection, meanwhile first after light emitting diode LD1, resistance R 18 connect positive supply, and the 5 pin while is through capacitor C 17 ground connection.The coil other end of relay J 1 is connected with terminals y, and terminals x connects positive supply;
The 10 foot meridian capacitor C8 one tunnel of said chip U1 are through diode D5 ground connection, another road is connected with the base stage of resistance R 9 with triode Q1 through diode D4, the grounded emitter of diode Q1, the collector of Q1 connects positive supply through resistance R 11, the collector output of Q1 links to each other with 12 pin with 8 pin of chip U4, and through capacitor C 16 ground connection.
The base resistance R9 of above-mentioned triode Q1 and the tie point of diode D4 are connected with the negative pole of diode D2 and together are connected with 9 pin of chip U4 through diode D3 in the time of capacitor C 10 ground connection; The positive pole of diode D2 is connected with 2 pin of chip U2.
Above-mentioned Displaying Meter 2 is installed on the on-the-spot support or on the panel board of pulpit.
Claims (7)
1. a digital display water level automatic control alarm instrument comprises sensor (1) and Displaying Meter (2); It is characterized in that: described sensor (1) comprises housing (3) and is contained in the interior detection line plate (4) of housing (3), described detection line plate (4) is provided with a, b and c, d two set of connections terminals, wherein a, b two ends are connected with e, the f two ends of Displaying Meter (2) by two leads are corresponding respectively, c end on the detection line plate (4) of sensor (1) is connected with the end of sensing testing line L, the d end is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water; Sensing testing line L is that single core is provided with the insulation sheath lead outward, and the other end of sensing testing line L vertically is placed in the water of carrying water receptacle;
Above-mentioned Displaying Meter (2), comprise shell (5) and be contained in the interior circuit board (6) of shell (5), described circuit board (6) is provided with pre-amplifier unit, counting unit, drives execution element, 24V terminals, transmits e, f two ends and full level alarm output end p, the q that is connected, low alarm output terminal m, n and outer water pump control end x, y, z with sensor (1) two line.
2. a kind of digital display water level automatic control alarm instrument according to claim 1, it is characterized in that: above-mentioned detection line plate (4) is provided with chip U6, and 1 pin of chip U6 is connected with the c end by variable resistor VR101; When being connected with the c end behind 2 pin of chip U6 and the 6 pin short circuits, by capacitor C 103 ground connection, direct ground connection 4 pin of 7 pin of chip U6,10 pin and 14 pin connect diode D101 negative pole simultaneously, the anodal a end that connects of diode D101,5 pin of chip U6 are connected with the base stage of triode Q101 and Q102 with R104 is corresponding through resistance R 101 respectively with 9 pin, the emitter of triode Q101 and Q102 is corresponding with D103 through diode D102 respectively to be connected with the negative pole of diode D101 with a end of two-wire system terminals, and the collector of triode Q101 and Q102 is respectively through resistance R 102 and R106 ground connection; The c end of detection line plate (4) is connected with the upper end of sensing testing line L; The d end of detection line plate (4) is connected with the end of grounded probe T, and the other end of grounded probe T is connected altogether with the container of carrying water.
3. a kind of digital display water level automatic control alarm instrument according to claim 1, it is characterized in that: the pre-amplifier unit of above-mentioned Displaying Meter (2) is made of chip U1, when 2 pin of chip U1 and 6 pin short circuits pass through resistance R 2 ground connection, connect the positive pole of diode D2 and the negative pole of diode D1, the positive pole of diode D1 is connected with the 24V power end by resistance R 1 simultaneously, again by stabilivolt WD1 ground connection, be connected with light emitting diode LD5 is anodal again simultaneously, the negative pole of light emitting diode LD5 is connected with the e end, and f holds ground connection; 3 pin of chip U1 and 11 pin are respectively through capacitor C 5 and C6 ground connection, 7 pin ground connection, the output terminal that 4 pin and 14 pin meet three end automatic voltage regulation power supply chip U7 simultaneously is a positive supply, the input end of three end automatic voltage regulation power supply chip U7 is connected with the 24V power supply, in the time of 8 pin of chip U1 and 12 pin short circuits, be connected with 13 pin of chip U1 by resistance R 4, and through capacitor C 4 ground connection, 5 pin of chip U1 and 10 pin short circuits join through 15 pin of capacitor C 9 with drives execution element chip U3 when capacitor C 7 connects 5 pin of counting unit chip U2.
4. a kind of digital display water level automatic control alarm instrument according to claim 1, it is characterized in that: above-mentioned Displaying Meter (2) counting unit comprises chip U2 and eight sections charactrons, 1 of chip U2,15,14,13,12,3 distinguish correspondence with 2 pin is connected with the associated end pin of eight sections charactron U8,4 of chip U2,6,8 pin are ground connection respectively, 16 pin are connected with the output terminal positive supply of three-terminal voltage-stabilizing power supply, 5 pin and 7 pin are respectively by resistance R 5, R7 ground connection, the drive end pin of above-mentioned eight sections charactrons is connected through the collector of resistance R 8 with triode Q2, the emitter of triode Q2 connects positive supply through diode D6, and the base stage of triode Q2 is connected through 9 pin of resistance R 10 with the chip U4 of drives execution element.
5. a kind of digital display water level automatic control alarm instrument according to claim 1, it is characterized in that: above-mentioned drives execution element is made up of chip U3, U4 and U5, chip U3 output is divided into three the tunnel, and wherein two-way is controlled high and low water-level alarm, the Kai Heguan of another road control water pump; Above-mentioned control high-low water alarm circuit is made of two groups of members circuit all identical with connection, 11 pin of chip U3 and 3 pin are two groups of output terminal pin, respectively by diode D11, corresponding and the resistance R 21 of D13, it is corresponding respectively when the end of R24 connects by capacitor C 18, resistance R 20 and capacitor C 20, resistance R 23 ground connection, the other end of resistance R 21 and resistance R 24 is corresponding to be connected with 12 pin with 2 pin of chip U5,2 pin and 12 pin are corresponding to respectively capacitor C 19, resistance R 22 and capacitor C 21 and resistance R 25 ground connection, and corresponding respectively and 6 pin, 8 pin short circuits, 3 pin of chip U5,11 pin are respectively by capacitor C 22, C23 ground connection, the direct ground connection of 7 pin, 4 pin, 10 pin, 14 pin connect positive supply; 5 pin of chip U5 and 9 pin are that two groups of output loops are controlled high and low water level respectively, corresponding respectively a end by relay J 2, J3 coil, the other end of relay J 2, J3 coil is connected with m with terminals p respectively, q is connected with positive supply with the n end, 5 pin and 9 pin are respectively by capacitor C 24 and C25 ground connection, simultaneously corresponding parallel resistance R26, light emitting diode LD3 and resistance R 27, light emitting diode LD4 respectively between 5 pin and 9 pin and the positive supply;
Another road output of chip U3, the pi type filter of being made up of by diode D7 connection capacitor C 11, C12, resistance R 14 9 pin is connected with 2 pin of chip U4 respectively; With by 2 pin by diode D8 respectively through capacitor C 13, resistance R 17 ground connection time, be connected with triode Q3 base stage through stabilivolt WD2, the county of emission ground connection of Q3, the collector of Q3 is connected with 6 pin of chip U4 through resistance R 16;
3 pin of chip U4 and 11 pin are respectively through capacitor C 15, C14 ground connection, the direct ground connection of 7 pin, and 4 pin, 14 pin, 10 pin connect positive supply simultaneously; When the output of 5 pin of chip U4 was connected with coil one end of relay J 1, successively by light emitting diode LD2, resistance R 19 ground connection, meanwhile first after light emitting diode LD1, resistance R 18 connect positive supply, and the 5 pin while is through capacitor C 17 ground connection; The coil other end of relay J 1 is connected with terminals y, and terminals x connects positive supply.
6. a kind of digital display water level automatic control alarm instrument according to claim 3, it is characterized in that: the 10 foot meridian capacitor C8 one tunnel of said chip U1 are through diode D5 ground connection, another road is connected with the base stage of resistance R 9 with triode Q1 through diode D4, the grounded emitter of diode Q1, the collector of Q1 connects positive supply through resistance R 11, the collector output of Q1 links to each other with 12 pin with 8 pin of chip U4, and through capacitor C 16 ground connection.
7. a kind of digital display water level automatic control alarm instrument according to claim 6, it is characterized in that: the base resistance R9 of above-mentioned triode Q1 and the tie point of diode D4 are connected with the negative pole of diode D2 and together are connected with 9 pin of chip U4 through diode D3 in the time of capacitor C 10 ground connection; The positive pole of diode D2 is connected with 2 pin of chip U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200100558U CN201654569U (en) | 2010-01-06 | 2010-01-06 | Digital display water level automatic control alarm instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200100558U CN201654569U (en) | 2010-01-06 | 2010-01-06 | Digital display water level automatic control alarm instrument |
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| CN201654569U true CN201654569U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010200100558U Expired - Fee Related CN201654569U (en) | 2010-01-06 | 2010-01-06 | Digital display water level automatic control alarm instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117079B (en) * | 2010-01-06 | 2014-02-26 | 李德强 | Automatic digital water level control warner |
| CN105955323A (en) * | 2016-06-15 | 2016-09-21 | 山东华联矿业股份有限公司 | Self-control pump water-level control device |
-
2010
- 2010-01-06 CN CN2010200100558U patent/CN201654569U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117079B (en) * | 2010-01-06 | 2014-02-26 | 李德强 | Automatic digital water level control warner |
| CN105955323A (en) * | 2016-06-15 | 2016-09-21 | 山东华联矿业股份有限公司 | Self-control pump water-level control device |
| CN105955323B (en) * | 2016-06-15 | 2019-03-19 | 山东华联矿业股份有限公司 | Self-controlled pump water-level control apparatus |
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