CN202471175U - Coal pile sensor - Google Patents
Coal pile sensor Download PDFInfo
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- CN202471175U CN202471175U CN 201220066838 CN201220066838U CN202471175U CN 202471175 U CN202471175 U CN 202471175U CN 201220066838 CN201220066838 CN 201220066838 CN 201220066838 U CN201220066838 U CN 201220066838U CN 202471175 U CN202471175 U CN 202471175U
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Abstract
The utility model provides a coal pile sensor of a centralized control protection system of a coal mine belt conveyor. The coal pile sensor comprises an enclosure hanging ring, a connecting rod, a cross tail fin and a circuit device, wherein the hanging ring is located at the central position of the upper end plate of an enclosure; the cross tail fin is fixedly connected to the lower end plate of the enclosure through the connecting rod; and a circuit board of the circuit device is horizontally mounted at the lower end in a shell. The circuit board is provided with a power circuit, an angle detection circuit, a main control circuit and an output drive circuit, wherein the power circuit provides 12V and 3.3V DC (direct current) voltage for other circuits on the circuit board to work; the angle detection circuit converts an inclination angle signal of the coal pile sensor into a voltage signal and outputs the voltage signal to the main control circuit; and the main control circuit processes the input voltage signal and outputs an alarm voltage signal generating the coal pile phenomenon through the output drive circuit. The coal pile sensor provided by the utility model has the advantages of simple structure, high precision, no need of maintenance, high reliability and diverse output modes.
Description
Technical field
The utility model relates to the sensor that a kind of industrial and mineral equipment is used, and is specifically related to the sensor that prevents to cause because of the coal piling fault equipment breakdown in a kind of mine belt conveyor centralized control protection system.
Background technology
Belt conveyor is widely used in places such as the underworkings, grass transportation system, ore dressing plant of bargh; Carrying in the coal process with belt conveyor; The coal piling fault takes place easily, also is that coal height on the belt conveyor is greater than the situation of normal coal position.This moment, coal will flood the conveyor head very soon if can not in time find and stop, badly damaged equipment, even jeopardize personal security.Therefore, on belt conveyor, will adopt the control protection system, and the coal piling sensor of this control protection system is very important first link.The coal piling sensor should be able in time feed back to the control protection system with the phenomenon that coal piling takes place.Existing coal piling sensor can roughly be divided into three kinds: first kind of coal piling sensor that is based on travel switch; But because coal mine environment is complicated; Be subject to external environment influence such as coal dust moisture and usually can not promptly and accurately report to the police, its durability, sensitivity, reliability are not very good.Second kind of coal piling sensor that is based on mercury cut-off or kerosene switch, its defective are the measurements that can't realize 360 degree omnidirectional high-accuracies, and himself poor anti jamming capability.The third is based on the coal piling sensor of electric pole type principle, and its weak point is the coal that needs the periodic cleaning electrode tip holder too much, especially should coal dust and water be wiped clean behind the water spray, needs the frequency of maintenance high, safeguards loaded down with trivial details.
The utility model content
The purpose of the utility model is: to the defective or the deficiency of prior art, provide a kind of and can realize that 360 degree omnidirectional high-accuracies are measured, antijamming capability is strong, need not loaded down with trivial details maintenance, output mode coal piling sensor various and simple in structure.
The technical scheme that realizes the utility model purpose is: the coal piling sensor of the utility model comprises housing, end cap, O-ring seal, securing member, outlet mouth, suspension ring, connecting link, cruciform tail and circuit arrangement.Circuit arrangement comprises circuit board and is arranged on the components and parts on the circuit board; O-ring seal is arranged between end cap and the housing, and end cap and housing constitute shell through O-ring seal and removable airtight being fixed together of securing member; Suspension ring are arranged on the upper head plate of shell from upper fixed, and suspension ring are positioned at the central part of the upper head plate of shell; The outlet mouth is arranged on the shell; Connecting link directly is fixedly connected from the below or is fixedly connected on the bottom plate of shell through web joint; Cruciform tail is fixedly connected on the lower end of connecting link; Circuit board places in the housing; Its design feature is:
Components and parts on the above-mentioned circuit board that is arranged on circuit arrangement constitute power circuit, angular detection circuit, governor circuit, level alerting signal output driving circuit and alarm relay signal output driving circuit;
Power circuit is provided with dc supply input, first dc power output end and second dc power output end; The dc supply input of described power circuit is drawn through the outlet mouth through electric wire, is electrically connected with external direct current power supply during use;
The angular detection circuit is provided with first power end, second source end and detectable voltage signals output terminal; And the core devices of angular detection circuit is three axis accelerometer integrated chip U5; This three axis accelerometer integrated chip U5 is horizontally disposed with, and is connected electrically on the circuit board; The setting of the second source end of angular detection circuit is electrically connected with second dc power output end of described power circuit; First power end of angular detection circuit is electrically connected with first dc power output end of power circuit;
Governor circuit is provided with power end, voltage signal input end and control signal voltage output end; The power end of governor circuit is electrically connected with first dc power output end of power circuit; The voltage signal input end of governor circuit is electrically connected with the detectable voltage signals output terminal of angular detection circuit;
Level alerting signal output driving circuit is provided with power end, control end and alarm voltage output terminal; The power end of level alerting signal output driving circuit is electrically connected with first dc power output end of power circuit; The control end of level alerting signal output driving circuit is electrically connected with the control signal voltage output end of governor circuit; The output terminal of level alerting signal output driving circuit is drawn through the outlet mouth through electric wire, is electrically connected with a corresponding input end of external warning circuit during use;
Alarm relay signal output driving circuit is provided with power end, control end and alarm signal output ends, and the power end of alarm relay signal output driving circuit is electrically connected with first dc power output end of power circuit; The control end of alarm relay signal output driving circuit is electrically connected with the control signal voltage output end of governor circuit; The alarm signal output ends of alarm relay signal output driving circuit is drawn through the outlet mouth through electric wire, is electrically connected with a corresponding input end of external warning circuit during use.
Further scheme is: above-mentioned governor circuit comprises reference voltage circuit, comparator circuit, first order control signal output circuit and second level control signal output circuit;
Reference voltage circuit is provided with power end and reference voltage output end; The power end of governor circuit also is the power end of reference voltage circuit;
Comparator circuit is provided with power end, quilt than voltage input end, comparative voltage input end and voltage signal output end; The power end of governor circuit also is the power end of comparator circuit; The quilt of comparator circuit is the voltage signal input end of governor circuit than voltage input end; The comparative voltage input end of comparator circuit is electrically connected with the reference voltage output end of reference voltage circuit;
First order control signal output circuit is provided with power end, control end and control voltage signal output end; The power end of governor circuit also is the power end of first order control signal output circuit; The control end of first order control signal output circuit is electrically connected with the voltage signal output end of comparator circuit;
Second level control signal output circuit is provided with power end, control end and control voltage signal output end; The power end of governor circuit also is the power end of second level control signal output circuit; The control end of second level control signal output circuit is electrically connected with the control voltage signal output end of first order control signal output circuit; The control voltage signal output end of second level control signal output circuit is the control signal voltage output end of governor circuit.
Further scheme also has: aforesaid angular detection circuit also comprises operational amplifier U3, capacitor C 8, capacitor C 9, resistance R 12 and resistance R 13; Operational amplifier U3 has power end, earth terminal, in-phase input end, inverting input and output terminal; Three axis accelerometer integrated chip U5 has power end, Z channel output end, Y channel output end and X passage output terminal; The power end of three axis accelerometer integrated chip U5 is the second source end of described angular detection circuit; Y channel output end and the X passage output terminal of three axis accelerometer integrated chip U5 are unsettled; The Z channel output end of three axis accelerometer integrated chip U5 is a voltage signal output end, the in-phase input end conllinear of an end of this output terminal and capacitor C 8, an end of capacitor C 9 and operational amplifier U3, and the other end of capacitor C 8 and capacitor C 9 is ground connection respectively; The power end of operational amplifier U3 is first power end of angular detection circuit; The earth terminal ground connection of operational amplifier U3; One end conllinear of one end of the inverting input of operational amplifier U3 and resistance R 12 and resistance R 13; The other end ground connection of resistance R 13, the other end of resistance R 12 is electrically connected with the output terminal of operational amplifier U3, and the output terminal of operational amplifier U3 is the detectable voltage signals output terminal of angular detection circuit.
Further scheme also has: aforesaid power circuit is made up of the first interface J1, resettable fuse F1, diode D1, inductance L 1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, the first power supply chip U1 and second source chip U2; The first power supply chip U1 and second source chip U2 all have input end, output and ground; The first interface J1 is the external power supply input interface, has 2 terminals; The end of resettable fuse F1 also is that No. 2 terminals are electrically connected with the positive pole of the first interface J1; The other end of resettable fuse F1 is connected with the positive electrical of diode D1; The negative pole of diode D1 is electrically connected with an end of capacitor C 1; The common junction of diode D1 and capacitor C 1 is electrically connected with an end of inductance L 1; The other end ground connection of capacitor C 1; The other end of inductance L 1 is electrically connected with an end of capacitor C 2, and the common junction of inductance L 1 and capacitor C 2 is electrically connected with the input end of the first power supply chip U1; The other end ground connection of capacitor C 2; The earth terminal ground connection of the first power supply chip U1; The output terminal of the first power supply chip U1 is electrically connected with the input end of second source chip U2; The common junction of the first power supply chip U1 and second source chip U2 is electrically connected with an end of capacitor C 3; The other end ground connection of capacitor C 3; The earth terminal ground connection of second source chip U2; The output terminal of second source chip U2 is electrically connected with an end of capacitor C 4; The other end ground connection of capacitor C 4;
The described first interface J1 is the dc supply input of power circuit; The output terminal of the first power supply chip U1 and first dc power output end that is power circuit; The output terminal of second source chip U2 is second dc power output end of power circuit.
Further scheme also has: the reference voltage circuit of aforesaid governor circuit comprises the adjustable shunting reference source of three ends V3, adjustable resistance RP1, resistance R 9, resistance R 1, capacitor C 5; The plus earth of three ends are adjustable shunting reference source V3, the reference utmost point of three ends are adjustable shunting reference source V3 is electrically connected the other end ground connection of resistance R 9 with the common junction of an end of the end of adjustable resistance RP1 and resistance R 9; The other end of adjustable resistance RP1, three ends the are adjustable negative electrode of shunting reference source V3 and an end conllinear of resistance R 1, the common junction of this conllinear is the reference voltage output end of reference voltage circuit; One end ground connection of capacitor C 5; The other end of the other end of resistance R 1 and capacitor C 5 is electrically connected and forms a public point, and this public point is the power input of reference voltage circuit;
The comparator circuit of aforementioned governor circuit comprises two voltage comparator U4, capacitor C 6, resistance R 2, resistance R 6 and resistance R 7; Two voltage comparator U4 have power end, earth terminal, first in-phase input end, first inverting input, first output terminal, second in-phase input end, second inverting input, second output terminal; Second inverting input of two voltage comparator U4 is electrically connected with an end of resistance R 6 and forms a common junction, and this common junction is the comparative voltage input end of comparator circuit; The first in-phase input end conllinear of one end of the other end of resistance R 6, resistance R 7 and two voltage comparator U4; Second in-phase input end, the 5 pin conllinear of one end of the other end of resistance R 7, resistance R 2, first output terminal of two voltage comparator U4 and two voltage comparator U4; The other end of resistance R 2 is electrically connected with the power end of two voltage comparator U4 and forms a common junction, and this common junction is the power end of comparator circuit; First inverting input of two voltage comparator U4 is electrically connected with an end of capacitor C 6 and forms a common junction, and this common junction is the quilt of comparator circuit than voltage input end; The other end ground connection of capacitor C 6; The earth terminal ground connection of two voltage comparator U4; Second output terminal of two voltage comparator U4 is the voltage signal output end of comparator circuit;
The first order control signal output circuit of aforesaid governor circuit comprises triode V1, resistance R 3, resistance R 4, resistance R 10, resistance R 11 and capacitor C 7; One end conllinear of one end of resistance R 3, an end of resistance R 10 and capacitor C 7, the common junction of this conllinear is the control end of first order control signal output circuit; The other end of resistance R 3 is electrically connected with an end of resistance R 4 and forms a common junction, and this common junction is the power end of first order control signal output circuit; The other end ground connection of capacitor C 7; The other end of resistance R 10 is electrically connected with the base stage of triode V1; One end of the other end of resistance R 4, resistance R 11 and the collector conllinear of triode V1; The emitter grounding of triode V1; The other end of resistance R 11 is the control voltage signal output end of first order control signal output circuit;
The second level control signal output circuit of aforesaid governor circuit comprises triode V2 and resistance R 5; The base stage of triode V2 is the control end of second level control signal output circuit; The emitter grounding of triode V2; The collector of triode V2 is electrically connected with an end of resistance R 5; The other end of resistance R 5 is the power end of second level control signal output circuit; The common junction of the collector of triode V2 and resistance R 5 is the control voltage signal output end of second level control signal output circuit.
Further scheme is: aforesaid level alerting signal output driving circuit comprises triode V5, triode V6, diode D4, diode D5, resistance R 16, resistance R 17, resistance R 18, resistance R 19 and the 3rd interface J3; The 3rd interface J3 is a signal output interface, has 2 terminals; One end of resistance R 16 is the control end of level alerting signal output driving circuit; The other end of resistance R 16 is electrically connected with the base stage of triode V5; The emitter grounding of triode V5; One end conllinear of one end of the collector of triode V5, resistance R 17 and resistance R 18; The other end of resistance R 18 is electrically connected with the base stage of triode V6; The emitter grounding of triode V6; The negative pole of one end of resistance R 19, the positive pole of diode D4, diode D5, first terminals of output interface J3 and the collector conllinear of triode V6; The negative pole conllinear of the other end of the other end of resistance R 17, resistance R 19 and diode D4, the common junction of this conllinear is the power end of level alerting signal output driving circuit; The plus earth of diode D5; The second terminals ground connection of the 3rd interface J3; The 3rd interface J3 is the alarm voltage output terminal of level alerting signal output driving circuit.
Further scheme is: aforesaid alarm relay signal output driving circuit comprises triode V4, relay K 1, diode D3, light emitting diode D2, resistance R 14, resistance R 15 and the second output interface J2; The second interface J2 is a signal output interface, has 3 terminals; One end of resistance R 14 is electrically connected with an end of resistance R 15 and forms a common junction, and this common junction is the control end of alarm relay signal output driving circuit; The other end of resistance R 15 is connected with the positive electrical of light emitting diode D2; The minus earth of light emitting diode D2; The other end of resistance R 14 is electrically connected with the base stage of triode V4; The emitter grounding of triode V4; One end conllinear of the coil of the positive pole of the collector of triode V4, diode D3 and relay K 1; The negative pole of diode D3 is electrically connected with the other end of the coil of relay K 1 and forms a common junction, and this common junction is the power end of alarm relay signal output driving circuit; The normally opened contact of relay K 1 is electrically connected with the 3rd terminals of the second interface J2, and the normally closed contact of relay K 1 is electrically connected with second leg of the second interface J2, and the moving contact of relay K 1 is electrically connected with first terminals of the second interface J2; The second interface J2 is the alarm signal output ends of alarm relay signal output driving circuit.
Further scheme is: the magnitude of voltage of first dc power output end institute out-put supply of aforesaid power circuit is DC12V, and the magnitude of voltage of second dc power output end institute out-put supply is DC3.3V.
Further scheme is: the resistance value of resistance value and the respective settings resistance R 6 of the reference voltage circuit of aforesaid governor circuit through regulating described adjustable resistance RP1 offers the magnitude of voltage of comparator circuit with the change reference voltage circuit, sends alarm control signal and be implemented under the different deflection angles.
The utlity model has positive effect: the coal piling sensor construction of (1) the utility model is simple, and precision is high, and is non-maintaining in the use, practices thrift cost.(2) the utility model utilizes three axis accelerometer, and is very convenient through the critical inclination angle degree value of warning need be set by the user, and in the use, the reliability of warning is high.(3) in the embodiment of the utility model, adopted scheme based on the mining coal piling sensor of ADXL335 accelerometer.This sensor utilizes 3 dimension measurement of angle functions of accelerometer, has really accomplished 360 ° of omnidirectional high-accuracies measurements, has avoided loaded down with trivial details maintenance; Multiple interference protection measure; Reduced the misoperation that on-the-spot interference causes, can in time stop the running of belt conveyor, prevented that the continuation of fault from enlarging.(4) the utility model also provides two kinds of different alerting signal output standards, adapts to most of centralized control system demand.
Description of drawings
Fig. 1 is a kind of structural representation of the coal piling sensor of the utility model;
Fig. 2 is that the B of Fig. 1 is to view;
Fig. 3 is the schematic perspective view of cruciform tail among Fig. 1;
Fig. 4 is the electric theory diagram of the circuit arrangement of the utility model;
Fig. 5 is the electrical schematic diagram of the power circuit among Fig. 4;
Fig. 6 is the electrical schematic diagram of the angular detection circuit among Fig. 4;
Fig. 7 is the synoptic diagram of corresponding relation at output voltage and angle of inclination of 8 pin of the three axis accelerometer U5 among Fig. 6;
Fig. 8 is the electrical schematic diagram of the governor circuit among Fig. 4;
Fig. 9 is the electrical schematic diagram of the level alerting signal output driving circuit among Fig. 4;
Figure 10 is the electrical schematic diagram of Fig. 4 repeat circuit alerting signal output driving circuit.
Reference numeral title in the above-mentioned accompanying drawing is following:
Level alerting signal output driving circuit 94,
Alarm relay signal output driving circuit 95.
Embodiment
(embodiment 1)
See Fig. 1 to Fig. 3, the coal piling sensor of present embodiment comprises housing 1, end cap 2, O-ring seal 3, securing member 4, outlet mouth 5, suspension ring 6, connecting link 7, cruciform tail 8 and circuit arrangement 9.
If the throughput direction of coal is according to being undertaken by the mode behind the forward direction; The backend machine head of a then last belt conveyor is positioned at the top of the FEP head of a back belt conveyor; The coal piling sensor is suspended in by its suspension ring 6 on the support body of backend machine head of last belt conveyor; If the conveying belt of conveyor notes avoiding conveying belt for turn round the conveying belt of circulating work at drive head unit when then hanging, and be positioned at the left of conveying belt or right-hand.Because cruciform tail 8 is positioned at the bottom of coal piling sensor, make the coal piling sensor center of gravity on the lower side, strike causes the misoperation of coal piling sensor with coal cinder thereby can reduce wind.Owing between loam cake 2 and the housing 1 O-ring seal 3 is set; 1 of loam cake 2 and housing are fastenedly connected with fastening bolt 4; Thereby dust and water protection effectively, the power supply input electric wire of circuit arrangement 9 and the electric wire of output signal are introduced and are drawn through outlet mouth 5, and use rubber belt sealing.
See Fig. 4, the components and parts that are arranged on the circuit board 90 of circuit arrangement 9 constitute power circuit 91, angular detection circuit 92, governor circuit 93, level alerting signal output driving circuit 94 and alarm relay signal output driving circuit 95.
Above-mentioned power circuit 91 is provided with dc supply input, first dc power output end and second dc power output end; The magnitude of voltage of first dc power output end institute out-put supply is DC12V, and the magnitude of voltage of second dc power output end institute out-put supply is DC3.3V.The dc supply input of described power circuit 91 is drawn through the outlet mouth 5 of electric wire on loam cake 2, and is electrically connected with external direct current power supply when using.
Above-mentioned angular detection circuit 92 is provided with first power end, second source end and detectable voltage signals output terminal, and the core devices of angular detection circuit 92 is three axis accelerometer integrated chip U5.This three axis accelerometer integrated chip U5 is horizontally disposed with, and is connected electrically on the circuit board 90.The power end of three axis accelerometer integrated chip U5 is the second source end of angular detection circuit 92, and this second source end is electrically connected with second dc power output end of power circuit 91; First power end of angular detection circuit 92 is electrically connected with first dc power output end of power circuit 91.
Above-mentioned governor circuit 93 is provided with power end, voltage signal input end and control signal voltage output end.The power end of governor circuit 93 is electrically connected with first dc power output end of power circuit 91; The voltage signal input end of governor circuit 93 is electrically connected with the detectable voltage signals output terminal of angular detection circuit 92.
Above-mentioned level alerting signal output driving circuit 94 is provided with power end, control end and alarm voltage output terminal.The power end of level alerting signal output driving circuit 94 is electrically connected with first dc power output end of power circuit 91; The control end of level alerting signal output driving circuit 94 is electrically connected with the control signal voltage output end of governor circuit 93; The output terminal of level alerting signal output driving circuit 94 is drawn through the outlet mouth 5 of electric wire on loam cake 2, is electrically connected with a corresponding input end of external warning circuit during use.
Above-mentioned alarm relay signal output driving circuit 95 is provided with power end, control end and alarm signal output ends.The power end of alarm relay signal output driving circuit 95 is electrically connected with first dc power output end of power circuit 91; The control end of alarm relay signal output driving circuit 95 is electrically connected with the control signal voltage output end of governor circuit 93; The alarm signal output ends of alarm relay signal output driving circuit 95 is drawn through the outlet mouth 5 of electric wire on loam cake 2, is electrically connected with a corresponding input end of external warning circuit during use.
Above-mentioned reference voltage circuit 93-1 is provided with power end and reference voltage output end.The power end of governor circuit 93 also is the power end of reference voltage circuit 93-1.
Above-mentioned comparator circuit 93-2 is provided with power end, quilt than voltage input end, comparative voltage input end and voltage signal output end.The power end of governor circuit 93 also is the power end of comparator circuit 93-2; The quilt of comparator circuit 93-2 is the voltage signal input end of governor circuit 93 than voltage input end; The comparative voltage input end of comparator circuit 93-2 is electrically connected with the reference voltage output end of described reference voltage circuit 93-1.
Above-mentioned first order control signal output circuit 93-3 is provided with power end, control end and control voltage signal output end.The power end of governor circuit 93 also is the power end of first order control signal output circuit 93-3; The control end of first order control signal output circuit 93-3 is electrically connected with the voltage signal output end of comparator circuit 93-2.
Above-mentioned second level control signal output circuit 93-4 is provided with power end, control end and control voltage signal output end.The power end of governor circuit 93 also is the power end of second level control signal output circuit 93-4; The control end of second level control signal output circuit 93-4 is electrically connected with the control voltage signal output end of first order control signal output circuit 93-3; The control voltage signal output end of second level control signal output circuit 93-4 is the control signal voltage output end of described governor circuit 93.
If the coal piling phenomenon takes place in the FEP head position of the belt conveyor of one-level in the back; Coal is piled up and is acquired a certain degree; Contact with the empennage 8 of the coal piling sensor of the backend machine head position below that is positioned at the previous stage belt conveyor; At this moment, cruciform tail 8 run-off the straights, thus cause the skew of coal piling sensor occurrence positions.Be arranged on the also run-off the straight thereupon of three axis accelerometer U5 of the angular detection circuit 92 on the circuit board 90; And export the correspondent voltage signal thereupon; This voltage signal outputs to governor circuit 93 after amplifying, the voltage signal of 93 pairs of inputs of governor circuit is handled, if this voltage signal does not reach the threshold value that sets; Then still keep normal output state; If this voltage signal reaches preset threshold, then governor circuit 93 output states change, and drive alarm equipment alarm and outputting drive voltage thereby control corresponding output driving circuit.When the angle that three axis accelerometer U5 is tilted equaled threshold value, this angle of inclination was then as critical value.
See Fig. 5, power circuit 91 is made up of the first interface J1, resettable fuse F1, diode D1, inductance L 1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, the first power supply chip U1 and second source chip U2.
The first power supply chip U1 and second source chip U2 are circuit of three-terminal voltage-stabilizing integrated, are equipped with input end, output and ground.In the present embodiment, the preferred model of the first power supply chip U1 is the three terminal integrated voltage stabilizer of LM7812, and 1 pin of LM7812 is an input end, and 2 pin are earth terminal, and 3 pin are output terminal.The preferred model of second source chip U2 is the three end integrated low-voltage difference voltage stabilizers of SPX1117, and 1 pin of SPX1117 is that earth terminal, 2 pin are output terminal, and 3 pin are input end.
The first interface J1 is the external power supply input interface, has 2 terminals; The first interface J1 is the dc supply input of power circuit 91.The end of resettable fuse F1 also is that No. 2 terminals are electrically connected with the positive pole of the first interface J1; The other end of resettable fuse F1 is connected with the positive electrical of diode D1; The negative pole of diode D1 is electrically connected with an end of capacitor C 1; The common junction of diode D1 and capacitor C 1 is electrically connected with an end of inductance L 1; The other end ground connection of capacitor C 1; The other end of inductance L 1 is electrically connected with an end of capacitor C 2, and the common junction of inductance L 1 and capacitor C 2 is electrically connected with the input end of the first power supply chip U1; The other end ground connection of capacitor C 2; The earth terminal 2 pin ground connection of the first power supply chip U1; One end conllinear of output terminal 3 pin of the first power supply chip U1, input end 3 pin of second source chip U2 and capacitor C 3 and form a common junction, this common junction is first dc power output end of power circuit 91; The other end ground connection of capacitor C 3; The earth terminal 1 pin ground connection of second source chip U2; Output terminal 2 pin of second source chip U2 are electrically connected with an end of capacitor C 4 and form a common junction, and this common junction is second dc power output end of power circuit 91; The other end ground connection of capacitor C 4.
See Fig. 6, angular detection circuit 92 is made up of three axis accelerometer integrated chip U5, operational amplifier U3, capacitor C 8, capacitor C 9, resistance R 12 and resistance R 13.
Three axis accelerometer integrated chip U5 has ST (self check) end, COM (general) end, Z
OUT(output of Z passage) end, Y
OUT(output of Y passage) end, X
OUT(X passage output) end and V
S(power supply) end.In the present embodiment; The preferred model of three axis accelerometer integrated chip U5 is the three axis accelerometer integrated circuit of ADXL335; This integrated circuit has 16 leg, and 2 pin wherein, 5 pin, 8 pin, 10 pin, 12 pin and 15 pin are corresponding with above-mentioned self check end, general end, Z channel output end, Y channel output end, X passage output terminal and power end respectively.
In the present embodiment, power end 15 pin of ADXL335 are the second source end of angular detection circuit 92, and 14 pin are electrically connected with 15 pin.The voltage signal of the relevant inclination of Z channel output end 8 pin output of ADXL335, the relation of three axis accelerometer integrated chip U5 angle of inclination and output voltage is as shown in Figure 7.The general end 5 pin ground connection of ADXL335, and 3 pin, 6 pin and 7 pin ground connection.Self check end 2 pin of ADXL335, Y channel output end 10 pin, X passage output terminal 12 pin are all unsettled, and 1 pin, 4 pin, 9 pin, 11 pin, 13 pin and 16 pin are also all unsettled.
Operational amplifier U3 has power end, earth terminal, in-phase input end, inverting input and output terminal.In the present embodiment; The preferred model of operational amplifier U3 is the two computing amplification circuits of the low-power consumption of LM258; This integrated circuit has 8 leg, and 8 pin wherein, 4 pin, 3 pin, 2 pin and 1 pin are corresponding with above-mentioned power end, earth terminal, in-phase input end, inverting input and output terminal respectively; 5 pin of LM258,6 pin and 7 pin are respectively second in-phase input end, second inverting input and second output terminal, and are all unsettled in the present embodiment.
One end of Z channel output end 8 pin of three axis accelerometer integrated chip U5 and an end of capacitor C 8, capacitor C 9 and the in-phase input end 3 pin conllinear of operational amplifier U3; The other end of capacitor C 8 and capacitor C 9 is ground connection respectively; Power end 8 pin of operational amplifier U3 are first power end of angular detection circuit 92; The earth terminal 4 pin ground connection of operational amplifier U3; One end conllinear of inverting input 2 pin of operational amplifier U3 and an end of resistance R 12 and resistance R 13; The other end ground connection of resistance R 13; The other end of resistance R 12 is electrically connected with output terminal 1 pin of operational amplifier U3; Output terminal 1 pin of operational amplifier U3 is the detectable voltage signals output terminal of angular detection circuit 92, during use by this output terminal output voltage signal JDXH.
See Fig. 8, the reference voltage circuit 93-1 of governor circuit 93 is made up of the adjustable shunting reference source of three ends V3, adjustable resistance RP1, resistance R 9, resistance R 1 and capacitor C 5.
Three ends are adjustable, and shunting reference source V3 is a kind of parallel voltage-stabilizing integrated circuit, is also referred to as adjustable accurate shunt regulator, has anode, negative electrode and with reference to the utmost point, can equivalence be a voltage stabilizing diode.In the present embodiment, three ends are adjustable, and the preferred model of shunting reference source V3 is the integrated circuit of TL431C.
Adjustable resistance RP1 connects with resistance R 9 and forms bleeder circuit.The plus earth of three ends are adjustable shunting reference source V3 is electrically connected with reference to the common junction of the utmost point with adjustable resistance RP1 and resistance R 9; The other end ground connection of resistance R 9; The other end of adjustable resistance RP1, three ends the are adjustable negative electrode of shunting reference source V3 and an end conllinear of first resistance R 1, the common junction of this conllinear is the reference voltage output end of reference voltage circuit 93-1; One end ground connection of capacitor C 5; The other end of the other end of resistance R 1 and capacitor C 5 is electrically connected and forms a public point, and this common junction is the power end of reference voltage circuit 93-1.
The comparator circuit 93-2 of governor circuit 93 is made up of two voltage comparator U4, capacitor C 6, resistance R 2, resistance R 6 and resistance R 7.
Two voltage comparator U4 have power end, earth terminal, first in-phase input end, first inverting input, first output terminal, second in-phase input end, second inverting input, second output terminal.In the present embodiment, the preferred model of two voltage comparator U4 is two voltage comparator integrated circuit of LM393.This integrated circuit has 8 leg, and 1 to 8 pin wherein is corresponding successively with above-mentioned first output terminal, first inverting input, first in-phase input end, earth terminal, second in-phase input end, second inverting input, second output terminal and power end.
Second inverting input, 6 pin of two voltage comparator U4 are electrically connected with an end of resistance R 6 and form a common junction, and this common junction is the comparative voltage input end of comparator circuit 93-2; First in-phase input end, the 3 pin conllinear of one end of the other end of resistance R 6, resistance R 7 and two voltage comparator U4; Second in-phase input end, the 5 pin conllinear of first output terminal, 1 pin of one end of the other end of resistance R 7, resistance R 2, two voltage comparator U4 and two voltage comparator U4; The other end of resistance R 2 is electrically connected with power end 8 pin of two voltage comparator U4 and forms a common junction, and this common junction is the power end of comparator circuit 93-2; First inverting input, 2 pin of two voltage comparator U4 are electrically connected with an end of the 6th capacitor C 6 and form a common junction, and this common junction is the quilt of comparator circuit 93-2 than voltage input end; The other end ground connection of capacitor C 6; The earth terminal 4 pin ground connection of two voltage comparator U4; Second output terminal, 7 pin of two voltage comparator U4 are the voltage signal output end of comparator circuit 93-2.
The first order control signal output circuit 93-3 of governor circuit 93 is made up of triode V1, resistance R 3, resistance R 4, resistance R 10, resistance R 11 and capacitor C 7.
One end conllinear of one end of resistance R 3, an end of resistance R 10 and capacitor C 7, the common junction of this conllinear is the control end of first order control signal output circuit 93-3; The other end of resistance R 3 is electrically connected with an end of resistance R 4 and forms a common junction, and this common junction is the power end of first order control signal output circuit 93-3; The other end ground connection of capacitor C 7; The other end of resistance R 10 is electrically connected with the base stage of triode V1; One end of the other end of resistance R 4, resistance R 11 and the collector conllinear of triode V1; The emitter grounding of triode V1; The other end of resistance R 11 is the control voltage signal output end of first order control signal output circuit 93-3.
The second level control signal output circuit 93-4 of governor circuit 93 is made up of triode V2 and resistance R 5.The base stage of triode V2 is the control end of second level control signal output circuit 93-4; The emitter grounding of triode V2; The collector of triode V2 is electrically connected with an end of resistance R 5; The other end of resistance R 5 is the power end of second level control signal output circuit 93-4; The common junction of the collector of triode V2 and resistance R 5 is the control voltage signal output end of second level control signal output circuit 93-4, controls voltage signal BJXH by this output terminal output during use.
See Fig. 9, level alerting signal output driving circuit 94 is made up of triode V5, triode V6, diode D4, diode D5, resistance R 16, resistance R 17, resistance R 18, resistance R 19 and the 3rd interface J3.
The 3rd interface J3 is a signal output interface, has 2 terminals; One end of resistance R 16 is the control end of level alerting signal output driving circuit 94; The other end of resistance R 16 is electrically connected with the base stage of triode V5; The emitter grounding of triode V5; One end conllinear of one end of the collector of triode V5, resistance R 17 and resistance R 18; The other end of resistance R 18 is electrically connected with the base stage of triode V6; The emitter grounding of triode V6; The negative pole of one end of resistance R 19, the positive pole of diode D4, diode D5, first terminals of output interface J3 and the collector conllinear of triode V6; The negative pole conllinear of the other end of the other end of resistance R 17, resistance R 19 and diode D4, the common junction of this conllinear are the power end of level alerting signal output driving circuit 94; The plus earth of diode D5; The second terminals ground connection of the 3rd interface J3; The 3rd interface J3 is the alarm voltage output terminal of level alerting signal output driving circuit 94.
In practical application; If the user is arranged on alerting signal form that the warning system in the long-range Control Room need insert when being the voltage alarm signal; Then from two terminals outgoing cables of the 3rd interface J3 of above-mentioned level alerting signal output driving circuit 94, be electrically connected with the corresponding port of signal input end of warning system in being arranged on Control Room by this cable again and get final product.
See Figure 10, alarm relay signal output driving circuit 95 is made up of triode V4, relay K 1, diode D3, light emitting diode D2, resistance R 14, resistance R 15 and the second interface J2.The second interface J2 is a signal output interface, has 3 terminals; One end of resistance R 14 is electrically connected with an end of resistance R 15 and forms a common junction, and this common junction is the control end of alarm relay signal output driving circuit 95; The other end of resistance R 15 is connected with the positive electrical of light emitting diode D2; The minus earth of light emitting diode D2; The other end of resistance R 14 is electrically connected with the base stage of triode V4; The emitter grounding of triode V4; One end conllinear of the coil of the positive pole of the collector of triode V4, diode D3 and relay K 1; The negative pole of diode D3 is electrically connected with the other end of the coil of relay K 1 and forms a common junction, and this common junction is the power end of alarm relay signal output driving circuit 95; The normally opened contact of relay K 1 is electrically connected with the 3rd terminals of the second interface J2, and the normally closed contact of relay K 1 is electrically connected with second leg of the second interface J2, and the moving contact of relay K 1 is electrically connected with first terminals of the second interface J2; The second interface J2 is the alarm signal output ends of alarm relay signal output driving circuit 95.
In the practical application; If the user is arranged on the form of the alerting signal that the warning system in the long-range Control Room need insert when being the switching regulator alerting signal; Then from 3 terminals outgoing cables of the second interface J2 of above-mentioned alarm relay signal output driving circuit 95, be electrically connected with the corresponding port of signal input end of warning system in being arranged on Control Room by this cable again and get final product.
The part components and parts are selected as follows in the present embodiment:
3296 potentiometers that adjustable resistance RP1 is preferred 10 kilo-ohms,
The first interface J1, the preferred model of the second interface J2 are the socket of 2EDG-5.08-2P,
The preferred model of the 3rd interface J3 is the socket of 2EDG-5.08-3P,
The preferred LM393 of two voltage comparator U4 models,
The preferred SCF020-1206 of resettable fuse F1 model,
The preferred 946H-1C-12D of relay K 1 model.
In the angle signal testing circuit 92 of circuit arrangement 9, the ADXL335 three axis accelerometer is a small size, slim, low-power consumption, complete three axis accelerometer, and the voltage output through signal condition is provided.It can measure the static weight acceleration of tilt detection in using, and motion, impacts or dynamic acceleration that vibration causes, also has the static angular measurement function at the Z axle.The output of Z channel output end 8 pin and the angle of inclination corresponding voltage signal of ADXL335 three axis accelerometer.Under the state of being horizontally disposed with; The Z channel output end no-voltage signal output (also being that magnitude of voltage is 0V) of ADXL335 three axis accelerometer; When the run-off the straight of ADXL335 three axis accelerometer; The magnitude of voltage of the voltage signal of then being exported reduces along with the increase at angle of inclination, and the size of its voltage output and the relation at angle of inclination are as shown in Figure 7.The setting of capacitor C 8 and capacitor C 9 is mainly the bandwidth that the Z channel output end is selected this accelerometer in the circuit, and the bandwidth range of Z axle is 0.5Hz to 550Hz.In order to reduce the influence to signal of acceleration that extraneous mechanical shaking produces, so reduce its bandwidth as far as possible, present embodiment adopts 10Hz.
The coal piling sensor of the utility model sends the angle of inclination of alerting signal can be according to the setting of user's actual needs.In the present embodiment, set if the coal piling sensor perturbations more than 45 ° and 45 ° the time, is then sent alerting signal.Concrete grammar is: through regulating the variable resistor RP1 among the reference voltage circuit 93-1 in the governor circuit 93; Making the adjustable shunting reference source of three ends V3 output voltage is 4.80V, also is that the reference voltage of the reference voltage output end output of reference voltage circuit 93-1 is 4.80V.The resistance value (as shown in table 1) of the resistance R 2 of comparator circuit 93-2 through calculate setting governor circuit 93, R6, R7; Making that the voltage of first in-phase input end, 3 pin of two voltage comparator U4 of comparator circuit 93-2 is 4.75V when output terminal 1 pin output low level, is 4.87V when output terminal 1 pin output high level.
The Zout of the ADXL335 three axis accelerometer integrated chip U5 of the angular detection circuit 92 of circuit arrangement 9 holds the angle of inclination voltage signal of 8 pin output; Amplifying circuit (like Fig. 6) through being made up of LM258, resistance R 12 and resistance R 13 amplifies 2.5 times, and the voltage signal that amplifies back output is JDXH.When coal piling sensor vertical was provided with, circuit board 90 was in horizontality, and its angle of inclination is 0 °, and integrated chip U5 also is in horizontality.At this moment; The JDXH magnitude of voltage of two voltage comparator U4 first inverting input 2 pin of the comparator circuit 93-2 of input governor circuit 93 is about 4.92V; Greater than the magnitude of voltage of first in-phase input end, 3 pin of two voltage comparator U4, make first output terminal, the 1 pin output low level (about 0V) of two voltage comparator U4.Because second in-phase input end, the 5 pin magnitudes of voltage (1 pin and 5 pin are idiostatic) of two voltage comparator U4 are less than the reference voltage value 4.80V of second inverting input, the 6 pin access of two voltage comparator U4; Thereby second output terminal, the 7 pin output low levels of two voltage comparator U4; And make triode V1 end; Triode V2 conducting, the control signal BJXH of governor circuit 93 outputs is a low level.The 3rd interface J3 in this moment level alerting signal output driving circuit 94 is output low level also, does not send alerting signal.Adhesive does not take place in the relay K 1 of alarm relay signal output driving circuit 95, and just alarm switch K1 is in off-state.When the coal piling sensor perturbations angle of the utility model during less than 45 °, circuit is the above-mentioned duty of not reporting to the police.
When the coal piling sensor perturbations of the utility model is more than 45 ° and 45 °; With 45 ° is critical value; The magnitude of voltage JDXH of angular detection circuit 92 outputs drops to when being about 4.74V; Also promptly the JDXH magnitude of voltage of two voltage comparator U4 first inverting input 2 pin of input makes first output terminal, 1 pin of two voltage comparator U4 export high level (about 11V) less than the magnitude of voltage 4.75V of two voltage comparator U4 first in-phase input end 3 pin.Because second in-phase input end, the 5 pin magnitudes of voltage (1 pin and 5 pin are idiostatic) of two voltage comparator U4 are greater than the reference voltage value 4.80V of second inverting input, the 6 pin access of two voltage comparator U4; Thereby second output terminal, 7 pin of two voltage comparator U4 output high level; And make triode V1 conducting; Triode V2 ends, and the control signal BJXH of governor circuit 93 outputs is a high level.At this moment, the 3rd interface J3 of level alerting signal output driving circuit 94 also exports high level, sends alerting signal; The triode V4 conducting of alarm relay signal output driving circuit 95, it is electric to make that the coil of relay K 1 gets, and adhesive takes place in relay K 1, and just alarm switch K1 is in attracting state, sends alerting signal through the second interface J2, and pilot lamp D2 is bright simultaneously.When coal piling sensor perturbations angle during greater than 45 °, circuit is above-mentioned warning duty.
First output terminal, 1 pin of two voltage comparator U4 is output as high level during warning; The voltage of first in-phase input end, 3 pin of couple voltage comparator U4 becomes 4.87V at this moment, thereby the coal piling sensor must return to the angle of inclination less than below 15 °, first output terminal, the 1 pin ability output low level of couple voltage comparator U4 when also the JDXH voltage of first inverting input, 2 pin of promptly two voltage comparator U4 input is greater than 4.87V; Thereby make the voltage control signal BJXH of governor circuit 93 outputs become low level; Alarm release, in other words, after the generation of reporting to the police; After must handling the coal piling phenomenon, alerting signal just can be removed.
(embodiment 2)
Other parts of present embodiment are identical with embodiment 1, and difference is: the angle of inclination critical value that the coal piling sensor of present embodiment can will take place to report to the police according to user's needs is by 45 ° among the embodiment 1 change in the present embodiment 30 °.For this reason, in the present embodiment resistance value of resistance R 6 changed and be made as 810 ohm.Through regulating variable resistor RP1; Making the output voltage of the adjustable shunting reference source of three ends V3 is 4.85 V, and the voltage of first in-phase input end, 3 pin of two voltage comparator U4 is 4.83V when first output terminal, 1 pin output low level, when first output terminal, 1 pin output high level, is 4.87V.When inclination reaches 30 ° and when above, the voltage of angular detection circuit 92 output JDXH is about 4.825V (tilting 30 °) or voltage is worth less than this, accordings to be similar to embodiment 1 said principle of work, and the coal piling sensor of present embodiment promptly sends alerting signal.
Can find out that from above two embodiment the coal piling sensor of the utility model can be achieved through the resistance value of adjusting variable resistor RP1 and the resistance value of respective settings resistance R 6 according to the user to sending the alerting signal desired tilt angle.
More than each embodiment be explanation to the embodiment of the utility model; But not to the restriction of the utility model; The technician in relevant technologies field is under the situation of spirit that does not break away from the utility model and scope; Can also make various conversion and variation and obtain the corresponding technical scheme that is equal to, so all technical schemes that are equal to all should be included into the scope of patent protection of the utility model.
Claims (9)
1. a coal piling sensor comprises housing (1), end cap (2), O-ring seal (3), securing member (4), outlet mouth (5), suspension ring (6), connecting link (7), cruciform tail (8) and circuit arrangement (9); Circuit arrangement (9) comprises circuit board (90) and is arranged on the components and parts on the circuit board (90); O-ring seal (3) is arranged between end cap (2) and the housing (1), and end cap (2) constitutes shell with housing (1) through described O-ring seal (3) and removable airtight being fixed together of securing member (4); Described suspension ring (6) are arranged on the upper head plate of shell from upper fixed, and suspension ring (6) are positioned at the central part of the upper head plate of shell; Outlet mouth (5) is arranged on the shell; Described connecting link (7) directly is fixedly connected from the below or is fixedly connected on the bottom plate of shell through web joint; Cruciform tail (8) is fixedly connected on the lower end of connecting link (7); Circuit board (90) places in the housing (1); It is characterized in that:
Components and parts on the described circuit board (90) that is arranged on circuit arrangement (9) constitute power circuit (91), angular detection circuit (92), governor circuit (93), level alerting signal output driving circuit (94) and alarm relay signal output driving circuit (95);
Described power circuit (91) is provided with dc supply input, first dc power output end and second dc power output end; The dc supply input of described power circuit (91) is drawn through outlet mouth (5) through electric wire, is electrically connected with external direct current power supply during use;
Described angular detection circuit (92) is provided with first power end, second source end and detectable voltage signals output terminal; And the core devices of angular detection circuit (92) is three axis accelerometer integrated chip (U5); This three axis accelerometer integrated chip (U5) is horizontally disposed with, and is connected electrically on the circuit board (90); The second source end of angular detection circuit (92) is electrically connected with second dc power output end of described power circuit (91); First power end of angular detection circuit (92) is electrically connected with first dc power output end of power circuit (91);
Described governor circuit (93) is provided with power end, voltage signal input end and control signal voltage output end; The power end of governor circuit (93) is electrically connected with first dc power output end of described power circuit (91); The voltage signal input end of governor circuit (93) is electrically connected with the detectable voltage signals output terminal of described angular detection circuit (92);
Described level alerting signal output driving circuit (94) is provided with power end, control end and alarm voltage output terminal; The power end of level alerting signal output driving circuit (94) is electrically connected with first dc power output end of described power circuit (91); The control end of level alerting signal output driving circuit (94) is electrically connected with the control signal voltage output end of described governor circuit (93); The output terminal of level alerting signal output driving circuit (94) is drawn through outlet mouth (5) through electric wire, is electrically connected with a corresponding input end of external warning circuit during use;
Described alarm relay signal output driving circuit (95) is provided with power end, control end and alarm signal output ends; The power end of alarm relay signal output driving circuit (95) is electrically connected with first dc power output end of described power circuit (91); The control end of alarm relay signal output driving circuit (95) is electrically connected with the control signal voltage output end of described governor circuit (93); The alarm signal output ends of alarm relay signal output driving circuit (95) is drawn through outlet mouth (5) through electric wire, is electrically connected with a corresponding input end of external warning circuit during use.
2. coal piling sensor according to claim 1 is characterized in that: described governor circuit (93) comprises reference voltage circuit (93-1), comparator circuit (93-2), first order control signal output circuit (93-3) and second level control signal output circuit (93-4);
Described reference voltage circuit (93-1) is provided with power end and reference voltage output end; The power end of described governor circuit (93) also is the power end of reference voltage circuit (93-1);
Described comparator circuit (93-2) is provided with power end, quilt than voltage input end, comparative voltage input end and voltage signal output end; The power end of described governor circuit (93) also is the power end of comparator circuit (93-2); The quilt of comparator circuit (93-2) is the voltage signal input end of governor circuit (93) than voltage input end; The comparative voltage input end of comparator circuit (93-2) is electrically connected with the reference voltage output end of described reference voltage circuit (93-1);
Described first order control signal output circuit (93-3) is provided with power end, control end and control voltage signal output end; The power end of said governor circuit (93) also is the power end of first order control signal output circuit (93-3); The control end of first order control signal output circuit (93-3) is electrically connected with the voltage signal output end of comparator circuit (93-2);
Described second level control signal output circuit (93-4) is provided with power end, control end and control voltage signal output end; The power end of described governor circuit (93) also is the power end of second level control signal output circuit (93-4); The control end of second level control signal output circuit (93-4) is electrically connected with the control voltage signal output end of first order control signal output circuit (93-3); The control voltage signal output end of second level control signal output circuit (93-4) is the control signal voltage output end of described governor circuit (93).
3. coal piling sensor according to claim 1 is characterized in that: described angular detection circuit (92) also comprises operational amplifier (U3), electric capacity (C8), electric capacity (C9), resistance (R12) and resistance (R13); Operational amplifier (U3) has power end, earth terminal, in-phase input end, inverting input and output terminal; Three axis accelerometer integrated chip (U5) has power end, Z channel output end, Y channel output end and X passage output terminal;
The power end of three axis accelerometer integrated chip (U5) is the second source end of described angular detection circuit (92); The Y channel output end and the X passage output terminal of three axis accelerometer integrated chip (U5) are unsettled; The Z channel output end of three axis accelerometer integrated chip (U5) is a voltage signal output end; The in-phase input end conllinear of one end of one end of this output terminal and electric capacity (C8), electric capacity (C9) and operational amplifier (U3), the other end of electric capacity (C8) and electric capacity (C9) is ground connection respectively; The power end of operational amplifier (U3) is first power end of angular detection circuit (92); The earth terminal ground connection of operational amplifier (U3); One end conllinear of one end of the inverting input of operational amplifier (U3) and resistance (R12) and resistance (R13); The other end ground connection of resistance (R13), the other end of resistance (R12) is electrically connected with the output terminal of operational amplifier (U3), and the output terminal of operational amplifier (U3) is the detectable voltage signals output terminal of angular detection circuit (92).
4. according to the described coal piling sensor of one of claim 1 to 3, it is characterized in that: described power circuit (91) is made up of first interface (J1), resettable fuse (F1), diode (D1), inductance (L1), electric capacity (C1), electric capacity (C2), electric capacity (C3), electric capacity (C4), first power supply chip (U1) and second source chip (U2); First power supply chip (U1) and second source chip (U2) all have input end, output and ground; First interface (J1) is the external power supply input interface, has 2 terminals; One end of resettable fuse (F1) also is that No. 2 terminals are electrically connected with the positive pole of first interface (J1); The other end of resettable fuse (F1) is connected with the positive electrical of diode (D1); The negative pole of diode (D1) is electrically connected with an end of electric capacity (C1); The common junction of diode (D1) and electric capacity (C1) is electrically connected with an end of inductance (L1); The other end ground connection of electric capacity (C1); The other end of inductance (L1) is electrically connected with an end of electric capacity (C2), and the common junction of inductance (L1) and electric capacity (C2) is electrically connected with the input end of first power supply chip (U1); The other end ground connection of electric capacity (C2); The earth terminal ground connection of first power supply chip (U1); The output terminal of first power supply chip (U1) is electrically connected with the input end of second source chip (U2); The common junction of first power supply chip (U1) and second source chip (U2) is electrically connected with an end of electric capacity (C3); The other end ground connection of electric capacity (C3); The earth terminal ground connection of second source chip (U2); The output terminal of second source chip (U2) is electrically connected with an end of electric capacity (C4); The other end ground connection of electric capacity (C4);
Described first interface (J1) is the dc supply input of power circuit (91); The output terminal of first power supply chip (U1) and first dc power output end that is power circuit (91); The output terminal of second source chip (U2) is second dc power output end of power circuit (91).
5. coal piling sensor according to claim 2 is characterized in that: the reference voltage circuit (93-1) of described governor circuit (93) comprises the adjustable shunting reference sources of three ends (V3), adjustable resistance (RP1), resistance (R9), resistance (R1), electric capacity (C5); The plus earth of shunting reference source that three ends are adjustable (V3), the common junction of an end of the reference utmost point of shunting reference source that three ends are adjustable (V3) and adjustable resistance (RP1) and an end of resistance (R9) is electrically connected the other end ground connection of resistance (R9); The other end of adjustable resistance (RP1), three ends the are adjustable negative electrode of shunting reference source (V3) and an end conllinear of resistance (R1), the common junction of this conllinear is the reference voltage output end of reference voltage circuit (93-1); One end ground connection of electric capacity (C5); The other end of the other end of resistance (R1) and electric capacity (C5) is electrically connected and forms a public point, and this public point is the power input of reference voltage circuit (93-1);
The comparator circuit (93-2) of said governor circuit (93) comprises two voltage comparators (U4), electric capacity (C6), resistance (R2), resistance (R6) and resistance (R7); Two voltage comparators (U4) have power end, earth terminal, first in-phase input end, first inverting input, first output terminal, second in-phase input end, second inverting input, second output terminal; Second inverting input of two voltage comparators (U4) is electrically connected with an end of resistance (R6) and forms a common junction, and this common junction is the comparative voltage input end of comparator circuit (93-2); The first in-phase input end conllinear of one end of the other end of resistance (R6), resistance (R7) and two voltage comparators (U4); The second in-phase input end conllinear of first output terminal of one end of the other end of resistance (R7), resistance (R2), two voltage comparator (U4) and two voltage comparators (U4); The other end of resistance (R2) is electrically connected with the power end of two voltage comparators (U4) and forms a common junction, and this common junction is the power end of comparator circuit (93-2); First inverting input of two voltage comparators (U4) is electrically connected with an end of electric capacity (C6) and forms a common junction, and this common junction is the quilt of comparator circuit (93-2) than voltage input end; The other end ground connection of electric capacity (C6); The earth terminal ground connection of two voltage comparators (U4); Second output terminal of two voltage comparators (U4) is the voltage signal output end of comparator circuit (93-2);
The first order control signal output circuit (93-3) of described governor circuit (93) comprises triode (V1), resistance (R3), resistance (R4), resistance (R10), resistance (R11) and electric capacity (C7); One end conllinear of one end of one end of resistance (R3), resistance (R10) and electric capacity (C7), the common junction of this conllinear is the control end of first order control signal output circuit (93-3); The other end of resistance (R3) is electrically connected with an end of resistance (R4) and forms a common junction, and this common junction is the power end of first order control signal output circuit (93-3); The other end ground connection of electric capacity (C7); The other end of resistance (R10) is electrically connected with the base stage of triode (V1); The collector conllinear of one end of the other end of resistance (R4), resistance (R11) and triode (V1); The emitter grounding of triode (V1); The other end of resistance (R11) is the control voltage signal output end of first order control signal output circuit (93-3);
Second level control signal output circuit (93-4) of described governor circuit (93) comprises triode (V2) and resistance (R5); The base stage of triode (V2) is the control end of second level control signal output circuit (93-4); The emitter grounding of triode (V2); The collector of triode (V2) is electrically connected with an end of resistance (R5); The other end of resistance (R5) is the power end of second level control signal output circuit (93-4); The common junction of the collector of triode (V2) and resistance (R5) is the control voltage signal output end of second level control signal output circuit (93-4).
6. according to the described coal piling sensor of one of claim 1 to 3, it is characterized in that: described level alerting signal output driving circuit (94) comprises triode (V5), triode (V6), diode (D4), diode (D5), resistance (R16), resistance (R17), resistance (R18), resistance (R19) and the 3rd interface (J3); The 3rd interface (J3) is a signal output interface, has 2 terminals; One end of resistance (R16) is the control end of level alerting signal output driving circuit (94); The other end of resistance (R16) is electrically connected with the base stage of triode (V5); The emitter grounding of triode (V5); One end conllinear of one end of the collector of triode (V5), resistance (R17) and resistance (R18); The other end of resistance (R18) is electrically connected with the base stage of triode (V6); The emitter grounding of triode (V6); The collector conllinear of first terminals of the negative pole of the positive pole of one end of resistance (R19), diode (D4), diode (D5), output interface (J3) and triode (V6); The negative pole conllinear of the other end of the other end of resistance (R17), resistance (R19) and diode (D4), the common junction of this conllinear are the power end of level alerting signal output driving circuit (94); The plus earth of diode (D5); The second terminals ground connection of the 3rd interface (J3); The 3rd interface (J3) is the alarm voltage output terminal of level alerting signal output driving circuit (94).
7. according to the described coal piling sensor of one of claim 1 to 3, it is characterized in that: described alarm relay signal output driving circuit (95) comprises triode (V4), relay (K1), diode (D3), light emitting diode (D2), resistance (R14), resistance (R15) and second output interface (J2); Second interface (J2) is a signal output interface, has 3 terminals; One end of resistance (R14) is electrically connected with an end of resistance (R15) and forms a common junction, and this common junction is the control end of alarm relay signal output driving circuit (95); The other end of resistance (R15) is connected with the positive electrical of light emitting diode (D2); The minus earth of light emitting diode (D2); The other end of resistance (R14) is electrically connected with the base stage of triode (V4); The emitter grounding of triode (V4); One end conllinear of the coil of the positive pole of the collector of triode (V4), diode (D3) and relay (K1); The negative pole of diode (D3) is electrically connected with the other end of the coil of relay (K1) and forms a common junction, and this common junction is the power end of alarm relay signal output driving circuit (95); The normally opened contact of relay (K1) is electrically connected with the 3rd terminals of second interface (J2); The normally closed contact of relay (K1) is electrically connected with second leg of second interface (J2), and the moving contact of relay (K1) is electrically connected with first terminals of second interface (J2); Second interface (J2) is the alarm signal output ends of alarm relay signal output driving circuit (95).
8. coal piling sensor according to claim 1 is characterized in that: the magnitude of voltage of first dc power output end institute out-put supply of described power circuit (91) is DC12V, and the magnitude of voltage of second dc power output end institute out-put supply is DC3.3V.
9. coal piling sensor according to claim 5; It is characterized in that: the resistance value of resistance value and the respective settings resistance (R6) of the reference voltage circuit (93-1) of described governor circuit (93) through regulating described adjustable resistance (RP1) offers the magnitude of voltage of comparator circuit (93-2) with change reference voltage circuit (93-1), sends alarm control signal and be implemented under the different deflection angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220066838 CN202471175U (en) | 2012-02-28 | 2012-02-28 | Coal pile sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220066838 CN202471175U (en) | 2012-02-28 | 2012-02-28 | Coal pile sensor |
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| CN202471175U true CN202471175U (en) | 2012-10-03 |
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| CN 201220066838 Expired - Fee Related CN202471175U (en) | 2012-02-28 | 2012-02-28 | Coal pile sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607666A (en) * | 2012-02-28 | 2012-07-25 | 天地（常州）自动化股份有限公司 | Heap coal sensor |
| CN104443542A (en) * | 2014-04-01 | 2015-03-25 | 淮南矿业(集团)有限责任公司 | Coal piling protective device |
| CN107894262A (en) * | 2017-10-13 | 2018-04-10 | 潍柴动力股份有限公司 | Liquid level emasuring device and method, engine |
| CN108390355A (en) * | 2018-03-12 | 2018-08-10 | 中煤科工集团西安研究院有限公司 | Wave detector pushing device automatic protection circuit in a kind of explosion-proof type coal mine hole |
-
2012
- 2012-02-28 CN CN 201220066838 patent/CN202471175U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607666A (en) * | 2012-02-28 | 2012-07-25 | 天地（常州）自动化股份有限公司 | Heap coal sensor |
| CN102607666B (en) * | 2012-02-28 | 2013-10-23 | 天地（常州）自动化股份有限公司 | Heap coal sensor |
| CN104443542A (en) * | 2014-04-01 | 2015-03-25 | 淮南矿业(集团)有限责任公司 | Coal piling protective device |
| CN104443542B (en) * | 2014-04-01 | 2016-09-07 | 淮南矿业(集团)有限责任公司 | Coal piling protecting device |
| CN107894262A (en) * | 2017-10-13 | 2018-04-10 | 潍柴动力股份有限公司 | Liquid level emasuring device and method, engine |
| CN108390355A (en) * | 2018-03-12 | 2018-08-10 | 中煤科工集团西安研究院有限公司 | Wave detector pushing device automatic protection circuit in a kind of explosion-proof type coal mine hole |
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