CN204055388U - A kind of big-and-middle-sized transport vehicle overload prewarning controller - Google Patents
A kind of big-and-middle-sized transport vehicle overload prewarning controller Download PDFInfo
- Publication number
- CN204055388U CN204055388U CN201420428190.2U CN201420428190U CN204055388U CN 204055388 U CN204055388 U CN 204055388U CN 201420428190 U CN201420428190 U CN 201420428190U CN 204055388 U CN204055388 U CN 204055388U
- Authority
- CN
- China
- Prior art keywords
- resistance
- level
- ground connection
- sensor
- capacitance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005303 weighing Methods 0.000 claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims description 22
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 15
- 238000010304 firing Methods 0.000 claims description 3
- 206010039203 Road traffic accident Diseases 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a kind of big-and-middle-sized transport vehicle overload prewarning controller, belongs to Vehicle Security field.The utility model comprises column weighting sensor, metering circuit, deviation and gain circuitry, A/D converter, LED digital display equipment, one-chip computer module, Vehicular accumulator cell, control relay circuit, power amplifier, loud speaker; Pillar gas sensor of weighing is connected with metering circuit, metering circuit is connected with deviation and gain circuitry, deviation is connected with A/D converter with gain circuitry, LED digital display equipment, control relay circuit, power amplifier are connected with one-chip computer module respectively, and power amplifier and loud speaker link together.Whether the utility model structure is simple, with low cost, can detect vehicle overload according to column weighting sensor, if overload, sounds a buzzer, and utilizes the igniter device of Control vehicle, vehicle cannot be started, reduce the generation of traffic accident.
Description
Technical field
The utility model relates to a kind of big-and-middle-sized transport vehicle overload prewarning controller, belongs to Vehicle Security field.
Background technology
Along with the development of economic society, freight traffic volume is also along with advancing by leaps and bounds, one of transportation mode that road transport is current or main, a lot of practitioner is because ordering about of interests emits life risk overload transportation goods willingly with pernicious market competition, therefore cause recurring a lot of illegal overrun and overload vehicle crush bridge, the safety misadventure such as cause casualties, and causes showing great attention to of various circles of society.It is singly transport administration problem that overload is mended, but the social concern that complicated, must from ruling by law, management and technically prevention comprehensively, fundamentally could effect a radical cure overloading.
Summary of the invention
The technical problems to be solved in the utility model is: the utility model provides a kind of big-and-middle-sized transport vehicle overload prewarning controller, and with solving, existing weighing apparatus price is higher, installation is complicated, dynamic error is comparatively large and the problem of limiting overload of vehicle method deficiency.
Technical solutions of the utility model are: a kind of big-and-middle-sized transport vehicle overload prewarning controller, comprises column weighting sensor 1, metering circuit 2, deviation and gain circuitry 3, A/D converter 4, LED digital display equipment 5, one-chip computer module 6, Vehicular accumulator cell 7, control relay circuit 8, power amplifier 9, loud speaker 10, described A/D converter 4, one-chip computer module 6, LED digital display equipment 5, loud speaker 10 is all positioned at vehicular drive indoor, column weighting sensor 1 is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor 1 of weighing is connected with metering circuit 2, metering circuit 2 is connected with deviation and gain circuitry 3, deviation is connected with A/D converter 4 with gain circuitry 3, LED digital display equipment 5, control relay circuit 8, power amplifier 9 is connected with one-chip computer module 6 respectively, power amplifier 9 and loud speaker 10 link together, Vehicular accumulator cell 7 is weighed with pillar gas sensor 1 respectively, one-chip computer module 6, A/D converter 4 is connected with control relay circuit 8.
Described column weighting sensor 1 comprises pressure head 11, capacitance weighing sensor 12, tight loop 13, dust boot 14, ground connection copper cash 15, carrying pressure head 16, block 17, check screw 18, top fixing plate 19, bottom fixed board 20; Described pressure head 11 is connected with top fixing plate 19, capacitance weighing sensor 12 is connected to below pressure head 11, carrying pressure head 16 is positioned at the below of capacitance weighing sensor 12, tight loop 13 will to be positioned at below capacitance weighing sensor 12 and the dust boot 14 be connected on carrying pressure head 16 is fixed on capacitance-type sensor 12, carrying pressure head 16 is fixed on bottom fixed board 20 by the block 17 on carrying pressure head 16 both sides by check screw 18, and ground connection copper cash 15 is connected with bottom fixed board 20 with top fixing plate 19.
Described capacitance weighing sensor 12 comprises sensor outer housing 21, outer sleeve 22, interior axle 23, stage clip 24, lower forcing screw 25, upper forcing screw 26, bottom loading plates 27, top movable plate 28, master collet 29, chute 30, ABS plastic plate 31, sight shield 32, capacitor plate 33, described outer sleeve 22 is separately fixed at the both sides of bottom loading plates 27, interior axle 23 is placed in outer sleeve 22, the part of interior axle 23 outside sensor outer housing 21 pass through on forcing screw 26 fix, chute 30 is had inside outer sleeve 22, stage clip 24 forcing screw 25 under interior axle 23 bottom is also used is fixed, master collet 29 is fixed on the chute 30 that there is the same height with outer sleeve 22 its both sides in the middle part of bottom loading plates 27, top movable plate 28 is connected with axle in both sides 23, by sequentially fixing ABS plastic 31 from top to bottom below top movable plate 28, sight shield 32 and capacitor plate 33 are also placed on master collet 29 top, ABS plastic 31 is fixed by order from bottom to up above bottom loading plates 27, sight shield 32 and capacitor plate 33 are also placed on bottom master collet 29.
Described metering circuit 2 comprises op amp Op1, op amp Op2, op amp Op3, cond C1, cond C2, stray capacitance Cs1, stray capacitance Cs2, unknown testing capacitance Cx, COMS switch S 1, COMS switch S 2, COMS switch S 3, COMS switch S 4, feedback resistance Rf_1, feedback resistance Rf_2, resistance R1, resistance R2, resistance R3, resistance R4;
Described op amp Op1 mouth is connected with resistance R2 one end, "-" level of op amp Op1 is connected with COMS switch S 3, "+" level ground connection, cond C1 one end its other end that is connected with "-" level of op amp Op1 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_1 one end is connected to op amp Op1 is connected with the mouth of op amp Op1, described op amp Op2 mouth is connected with resistance R1 one end, "-" level of op amp Op2 is connected with COMS switch S 4, "+" level ground connection, cond C2 one end its other end that is connected with "-" level of op amp Op2 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_2 one end is connected to op amp Op2 is connected with the mouth of op amp Op2, "-" level of described op amp Op3 is connected with one end of resistance R2, "+" level is connected with one end of resistance R1, described resistance R3 one end is connected on the connection lead of op amp Op3 and resistance R1, other end ground connection, described resistance R4 one end is connected to "-" level of op amp Op3, the other end is connected to the mouth of Op3, described unknown testing capacitance Cx one end is connected to the middle part of the connection lead of COMS switch S 1 and COMS switch S 2, the other end is connected to the middle part of the connection lead of COMS switch S 3 and COMS switch S 4, one end of described stray capacitance Cs1 and stray capacitance Cs2 is connected to the both sides of Cx, the other end is ground connection all, described COMS switch S 1 is connected with COMS switch S 2, another termination power of COMS switch S 1, COMS switch S 2 other end ground connection.
Described deviation and gain circuitry 3 comprise swept resistance R5, variable resistance R7, resistance R6, resistance R8, op amp Op4; Described swept resistance R5 mono-termination power, other end ground connection, resistance R6 is connected with resistance R8, the resistance R6 other end is connected with the sliding end of swept resistance R5, the other end of resistance R8 is connected with op amp Op4 mouth, variable resistance R7 one end is connected with the mouth of op amp Op3 in metering circuit 2, the other end is connected to "-" level of op amp Op4, "+" level ground connection of op amp Op4, op amp Op4 is connected with the middle part of resistance R8 line with resistance R6 with the middle part of R7 line.
Described control relay circuit 8 comprises NPN type triode T1, NPN type triode T3, PNP type triode T2, pull-up resistor R9, pull-up resistor R10, pull-up resistor R11, JRX13F type direct current normally closed relay K1, ignition lock S5, firing unit, pull-up resistor R9 one end is connected with the P2.5 mouth on one-chip computer module 6, the other end is connected with NPN type triode T1 base stage, the emitting stage ground connection of NPN type triode T1, NPN type triode T1 collecting electrode is connected with rated voltage Vdc, pull-up resistor R10 one end is connected with NPN type triode T1 collecting electrode, the other end is connected with the base stage of PNP type triode T2, the emitter of PNP type triode T2 is connected with rated voltage Vdc, PNP type triode T2 collecting electrode is connected with pull-up resistor R11, pull-up resistor R11 other end ground connection, the base stage of NPN type triode T3 is connected with the line between R11 with PNP type triode T2 collecting electrode, the grounded emitter of NPN type triode T3, NPN type triode T3 collecting electrode is connected with JRX13F type direct current normally closed relay K1, the other end of JRX13F type direct current normally closed relay K1 is connected with rated voltage Vdc, JRX13F type direct current normally closed relay K1 controls igniting switch S 5.
Utility model works principle is:
As shown in Figure 1: column weighting sensor 1 is installed on vehicle, when vehicle is in loaded situation, distance between capacitance weighing sensor 12 liang of capacitor plates can change, the capacitance of capacitance weighing sensor 12 also changes thereupon, metering circuit 2 is utilized to carry out the capacitance of Detection capacitance formula LOAD CELLS 12, and the output voltage of metering circuit 2 is delivered in deviation and gain circuitry 3, deviation and gain circuitry 3 can calibrate zero-bit and the gain of adjusting circuit, the voltage exported is fed in one-chip computer module 6 after A/D converter 4, the LED digital display equipment 5 be attached thereto shows current weight, this display module have employed routine techniques module.If exceed specified weight range, the square wave of 0.2 second 1kHz will be exported by one-chip computer module 6, then export the low level of 0.2 second, audio-signal-driven loud speaker 10, as alerting signal, in power amplifier 9, employ the routine techniques module that audio frequency amplifies integrated chip LM386.Meanwhile, one-chip computer module 6, by relay 8, cuts off the high tension loop of vehicle, automotive engine cannot be started.
As shown in Figure 2,3: column weighting sensor 1 is arranged on vehicle by pressure head 11, block 17, carrying pressure head 16, and is furnished with dust boot and ground connection copper cash 15, enter capacitance weighing sensor 12 inside to prevent dust and by ground connection copper cash 15, electrostatic derived.The core of weighting apparatus is capacitance weighing sensor 12, is a kind of pole span variability sensor.Capacitance weighing sensor 12 is made up of upper and lower two pieces of pole plates, capacitor plate 33 and sight shield 32 is all sealed with in pole plate, and between pole plate and top movable plate and bottom loading plates, adding the ABS plastic plate 31 of impact resistance, resistance to effect of heat, low temperature resistance, chemical proofing and excellent electrical properties, screen layer connects the ground wire of sight shield 32 and metering circuit 2 respectively.Axle 23 in compressing declines thus causes capacitor plate 33 spacing to change by car load change, thus changes car load into capacitance, utilizes metering circuit 2 to change voltage into and exports, can be obtained the Responding load value of vehicle by measuring voltage.
As shown in Figure 4, metering circuit 2 is made up of COMS switch, unknown testing capacitance Cx, op amp etc., export the vdc V3 be directly proportional to Cx, cond Cs1 and Cs2 is used for absorbing stray capacitance, the stray capacitance of upper end or by going out the insignificant voltage source of impedance, or ground connection, can't affect the detection of electric capacity; The stray capacitance of lower end connects the ground terminal of op amp Op1 or op amp Op2, and the electric potential difference at its two ends always zero, affects testing result hardly.Cond C1 and cond C2 is used for absorbing peak pulse.When measuring Cx, with square-wave signal control COMS switch S 1-S4 respectively, when S1 closes, charging pulse charges to Cx, and S4 closes simultaneously, and charging current flows to op amp Op2, and op amp Op2 can convert voltage V2 to charging current.When S2 closes, Cx discharges, and S3 closes simultaneously, and charging current flows to op amp Op1, and op amp Op1 can convert voltage V1 to charging current, V1 and V2 equal and opposite in direction, symbol is contrary.These two voltages are added by op amp Op3, can obtain output voltage V3.
As shown in Figure 5, the output voltage V3 of metering circuit 2 is sent to deviation and gain circuitry 3, and by regulating R5, always the signal of measurement circuit 2 adds a deviation, is used for calibrating zero-bit, also can changes the gain that R7 carrys out adjusting circuit, thus output voltage V4.
As shown in Figure 6, select direct current normally closed relay K1 to the lock-in circuit repeat circuit of automobile, when vehicle load is no more than predetermined weight, one-chip computer module P2.5 mouth is in high level state, and the base stage of transistor T1 is low level, T1 not conducting; And T2 base stage high level, conducting.Same T3 conducting, direct current normally closed relay K1, its normally closed interlock is connected in the high tension loop of vehicle.When opening dynamic switch (i.e. ignition lock), because one-chip computer module P2.5 mouth is in high level, so direct current normally closed relay K1 is failure to actuate, normal vehicle operation is not affected.When vehicle load exceedes predetermined weight, one-chip computer module send low level to P2.5 mouth, the base stage high level of transistor T1, T1 conducting; And T2 base stage low level, not conducting.Same T3 not conducting, direct current normally closed relay K1 action, its normally closed interlock disconnects, and cut off the high tension loop of vehicle, chaufeur cannot start automotive engine.When vehicle load returns under predetermined weight, one-chip computer module 6 send high level to P2.5 mouth again, direct current normally closed relay K1 action, and its normally closed interlock closes, and vehicle recovers again normal startup, thus effectively limit the overload behavior of vehicle.
The beneficial effects of the utility model are: this control setup structure is simple, with low cost, vehicle can be detected according to column weighting sensor whether to overload, if overload, sounds a buzzer, and utilize the igniter device of Control vehicle, vehicle cannot be started, reduce the generation of traffic accident.
Accompanying drawing explanation
Fig. 1 is anatomical connectivity block diagram of the present utility model;
Fig. 2 is column weighting sensor structural representation of the present utility model;
Fig. 3 is capacitance weighing sensor constructional drawing of the present utility model;
Fig. 4 is metering circuit schematic diagram of the present utility model;
Fig. 5 is deviation of the present utility model and gain circuitry schematic diagram;
Fig. 6 is control relay circuit schematic diagram of the present utility model.
Each label in Fig. 1-3: 1 is column weighting sensor, 2 is metering circuit, 3 is deviation and gain circuitry, 4 is A/D converter, 5 is LED digital display equipment, 6 is one-chip computer module, 7 is Vehicular accumulator cell, 8 is control relay circuit, 9 is power amplifier, 10 is loud speaker, 11 is pressure head, 12 is capacitance weighing sensor, 13 is tight loop, 14 is dust boot, 15 is ground connection copper cash, 16 is carrying pressure head, 17 is block, 18 is check screw, 19 is top fixing plate, 20 is bottom fixed board, 21 is sensor outer housing, 22 is outer sleeve, 23 is interior axle, 24 is stage clip, 25 is lower forcing screw, 26 is upper forcing screw, 27 is bottom loading plates, 28 is top movable plate, 29 is master collet, 30 is chute, 31 is ABS plastic plate, 32 is sight shield, 33 is capacitor plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: as shown in figures 1 to 6, a kind of big-and-middle-sized transport vehicle overload prewarning controller, comprises column weighting sensor 1, metering circuit 2, deviation and gain circuitry 3, A/D converter 4, LED digital display equipment 5, one-chip computer module 6, Vehicular accumulator cell 7, control relay circuit 8, power amplifier 9, loud speaker 10, described A/D converter 4, one-chip computer module 6, LED digital display equipment 5, loud speaker 10 is all positioned at vehicular drive indoor, column weighting sensor 1 is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor 1 of weighing is connected with metering circuit 2, metering circuit 2 is connected with deviation and gain circuitry 3, deviation is connected with A/D converter 4 with gain circuitry 3, LED digital display equipment 5, control relay circuit 8, power amplifier 9 is connected with one-chip computer module 6 respectively, power amplifier 9 and loud speaker 10 link together, Vehicular accumulator cell 7 is weighed with pillar gas sensor 1 respectively, one-chip computer module 6, A/D converter 4 is connected with control relay circuit 8,
Described column weighting sensor 1 comprises pressure head 11, capacitance weighing sensor 12, tight loop 13, dust boot 14, ground connection copper cash 15, carrying pressure head 16, block 17, check screw 18, top fixing plate 19, bottom fixed board 20; Described pressure head 11 is connected with top fixing plate 19, capacitance weighing sensor 12 is connected to below pressure head 11, carrying pressure head 16 is positioned at the below of capacitance weighing sensor 12, tight loop 13 will to be positioned at below capacitance weighing sensor 12 and the dust boot 14 be connected on carrying pressure head 16 is fixed on capacitance-type sensor 12, carrying pressure head 16 is fixed on bottom fixed board 20 by the block 17 on carrying pressure head 16 both sides by check screw 18, and ground connection copper cash 15 is connected with bottom fixed board 20 with top fixing plate 19;
Described capacitance weighing sensor 12 comprises sensor outer housing 21, outer sleeve 22, interior axle 23, stage clip 24, lower forcing screw 25, upper forcing screw 26, bottom loading plates 27, top movable plate 28, master collet 29, chute 30, ABS plastic plate 31, sight shield 32, capacitor plate 33, described outer sleeve 22 is separately fixed at the both sides of bottom loading plates 27, interior axle 23 is placed in outer sleeve 22, the part of interior axle 23 outside sensor outer housing 21 pass through on forcing screw 26 fix, chute 30 is had inside outer sleeve 22, stage clip 24 forcing screw 25 under interior axle 23 bottom is also used is fixed, master collet 29 is fixed on the chute 30 that there is the same height with outer sleeve 22 its both sides in the middle part of bottom loading plates 27, top movable plate 28 is connected with axle in both sides 23, by sequentially fixing ABS plastic 31 from top to bottom below top movable plate 28, sight shield 32 and capacitor plate 33 are also placed on master collet 29 top, ABS plastic 31 is fixed by order from bottom to up above bottom loading plates 27, sight shield 32 and capacitor plate 33 are also placed on bottom master collet 29.
Embodiment 2: as shown in figures 1 to 6, a kind of big-and-middle-sized transport vehicle overload prewarning controller, comprises column weighting sensor 1, metering circuit 2, deviation and gain circuitry 3, A/D converter 4, LED digital display equipment 5, one-chip computer module 6, Vehicular accumulator cell 7, control relay circuit 8, power amplifier 9, loud speaker 10, described A/D converter 4, one-chip computer module 6, LED digital display equipment 5, loud speaker 10 is all positioned at vehicular drive indoor, column weighting sensor 1 is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor 1 of weighing is connected with metering circuit 2, metering circuit 2 is connected with deviation and gain circuitry 3, deviation is connected with A/D converter 4 with gain circuitry 3, LED digital display equipment 5, control relay circuit 8, power amplifier 9 is connected with one-chip computer module 6 respectively, power amplifier 9 and loud speaker 10 link together, Vehicular accumulator cell 7 is weighed with pillar gas sensor 1 respectively, one-chip computer module 6, A/D converter 4 is connected with control relay circuit 8,
Described column weighting sensor 1 comprises pressure head 11, capacitance weighing sensor 12, tight loop 13, dust boot 14, ground connection copper cash 15, carrying pressure head 16, block 17, check screw 18, top fixing plate 19, bottom fixed board 20; Described pressure head 11 is connected with top fixing plate 19, capacitance weighing sensor 12 is connected to below pressure head 11, carrying pressure head 16 is positioned at the below of capacitance weighing sensor 12, tight loop 13 will to be positioned at below capacitance weighing sensor 12 and the dust boot 14 be connected on carrying pressure head 16 is fixed on capacitance-type sensor 12, carrying pressure head 16 is fixed on bottom fixed board 20 by the block 17 on carrying pressure head 16 both sides by check screw 18, and ground connection copper cash 15 is connected with bottom fixed board 20 with top fixing plate 19;
Described capacitance weighing sensor 12 comprises sensor outer housing 21, outer sleeve 22, interior axle 23, stage clip 24, lower forcing screw 25, upper forcing screw 26, bottom loading plates 27, top movable plate 28, master collet 29, chute 30, ABS plastic plate 31, sight shield 32, capacitor plate 33, described outer sleeve 22 is separately fixed at the both sides of bottom loading plates 27, interior axle 23 is placed in outer sleeve 22, the part of interior axle 23 outside sensor outer housing 21 pass through on forcing screw 26 fix, chute 30 is had inside outer sleeve 22, stage clip 24 forcing screw 25 under interior axle 23 bottom is also used is fixed, master collet 29 is fixed on the chute 30 that there is the same height with outer sleeve 22 its both sides in the middle part of bottom loading plates 27, top movable plate 28 is connected with axle in both sides 23, by sequentially fixing ABS plastic 31 from top to bottom below top movable plate 28, sight shield 32 and capacitor plate 33 are also placed on master collet 29 top, ABS plastic 31 is fixed by order from bottom to up above bottom loading plates 27, sight shield 32 and capacitor plate 33 are also placed on bottom master collet 29.
Described metering circuit 2 comprises op amp Op1, op amp Op2, op amp Op3, cond C1, cond C2, stray capacitance Cs1, stray capacitance Cs2, unknown testing capacitance Cx, COMS switch S 1, COMS switch S 2, COMS switch S 3, COMS switch S 4, feedback resistance Rf_1, feedback resistance Rf_2, resistance R1, resistance R2, resistance R3, resistance R4;
Described op amp Op1 mouth is connected with resistance R2 one end, "-" level of op amp Op1 is connected with COMS switch S 3, "+" level ground connection, cond C1 one end its other end that is connected with "-" level of op amp Op1 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_1 one end is connected to op amp Op1 is connected with the mouth of op amp Op1, described op amp Op2 mouth is connected with resistance R1 one end, "-" level of op amp Op2 is connected with COMS switch S 4, "+" level ground connection, cond C2 one end its other end that is connected with "-" level of op amp Op2 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_2 one end is connected to op amp Op2 is connected with the mouth of op amp Op2, "-" level of described op amp Op3 is connected with one end of resistance R2, "+" level is connected with one end of resistance R1, described resistance R3 one end is connected on the connection lead of op amp Op3 and resistance R1, other end ground connection, described resistance R4 one end is connected to "-" level of op amp Op3, the other end is connected to the mouth of Op3, described unknown testing capacitance Cx one end is connected to the middle part of the connection lead of COMS switch S 1 and COMS switch S 2, the other end is connected to the middle part of the connection lead of COMS switch S 3 and COMS switch S 4, one end of described stray capacitance Cs1 and stray capacitance Cs2 is connected to the both sides of Cx, the other end is ground connection all, described COMS switch S 1 is connected with COMS switch S 2, another termination power of COMS switch S 1, COMS switch S 2 other end ground connection.
Embodiment 3: as shown in figures 1 to 6, a kind of big-and-middle-sized transport vehicle overload prewarning controller, comprises column weighting sensor 1, metering circuit 2, deviation and gain circuitry 3, A/D converter 4, LED digital display equipment 5, one-chip computer module 6, Vehicular accumulator cell 7, control relay circuit 8, power amplifier 9, loud speaker 10, described A/D converter 4, one-chip computer module 6, LED digital display equipment 5, loud speaker 10 is all positioned at vehicular drive indoor, column weighting sensor 1 is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor 1 of weighing is connected with metering circuit 2, metering circuit 2 is connected with deviation and gain circuitry 3, deviation is connected with A/D converter 4 with gain circuitry 3, LED digital display equipment 5, control relay circuit 8, power amplifier 9 is connected with one-chip computer module 6 respectively, power amplifier 9 and loud speaker 10 link together, Vehicular accumulator cell 7 is weighed with pillar gas sensor 1 respectively, one-chip computer module 6, A/D converter 4 is connected with control relay circuit 8,
Described column weighting sensor 1 comprises pressure head 11, capacitance weighing sensor 12, tight loop 13, dust boot 14, ground connection copper cash 15, carrying pressure head 16, block 17, check screw 18, top fixing plate 19, bottom fixed board 20; Described pressure head 11 is connected with top fixing plate 19, capacitance weighing sensor 12 is connected to below pressure head 11, carrying pressure head 16 is positioned at the below of capacitance weighing sensor 12, tight loop 13 will to be positioned at below capacitance weighing sensor 12 and the dust boot 14 be connected on carrying pressure head 16 is fixed on capacitance-type sensor 12, carrying pressure head 16 is fixed on bottom fixed board 20 by the block 17 on carrying pressure head 16 both sides by check screw 18, and ground connection copper cash 15 is connected with bottom fixed board 20 with top fixing plate 19;
Described capacitance weighing sensor 12 comprises sensor outer housing 21, outer sleeve 22, interior axle 23, stage clip 24, lower forcing screw 25, upper forcing screw 26, bottom loading plates 27, top movable plate 28, master collet 29, chute 30, ABS plastic plate 31, sight shield 32, capacitor plate 33, described outer sleeve 22 is separately fixed at the both sides of bottom loading plates 27, interior axle 23 is placed in outer sleeve 22, the part of interior axle 23 outside sensor outer housing 21 pass through on forcing screw 26 fix, chute 30 is had inside outer sleeve 22, stage clip 24 forcing screw 25 under interior axle 23 bottom is also used is fixed, master collet 29 is fixed on the chute 30 that there is the same height with outer sleeve 22 its both sides in the middle part of bottom loading plates 27, top movable plate 28 is connected with axle in both sides 23, by sequentially fixing ABS plastic 31 from top to bottom below top movable plate 28, sight shield 32 and capacitor plate 33 are also placed on master collet 29 top, ABS plastic 31 is fixed by order from bottom to up above bottom loading plates 27, sight shield 32 and capacitor plate 33 are also placed on bottom master collet 29.
Described metering circuit 2 comprises op amp Op1, op amp Op2, op amp Op3, cond C1, cond C2, stray capacitance Cs1, stray capacitance Cs2, unknown testing capacitance Cx, COMS switch S 1, COMS switch S 2, COMS switch S 3, COMS switch S 4, feedback resistance Rf_1, feedback resistance Rf_2, resistance R1, resistance R2, resistance R3, resistance R4;
Described op amp Op1 mouth is connected with resistance R2 one end, "-" level of op amp Op1 is connected with COMS switch S 3, "+" level ground connection, cond C1 one end its other end that is connected with "-" level of op amp Op1 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_1 one end is connected to op amp Op1 is connected with the mouth of op amp Op1, described op amp Op2 mouth is connected with resistance R1 one end, "-" level of op amp Op2 is connected with COMS switch S 4, "+" level ground connection, cond C2 one end its other end that is connected with "-" level of op amp Op2 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_2 one end is connected to op amp Op2 is connected with the mouth of op amp Op2, "-" level of described op amp Op3 is connected with one end of resistance R2, "+" level is connected with one end of resistance R1, described resistance R3 one end is connected on the connection lead of op amp Op3 and resistance R1, other end ground connection, described resistance R4 one end is connected to "-" level of op amp Op3, the other end is connected to the mouth of Op3, described unknown testing capacitance Cx one end is connected to the middle part of the connection lead of COMS switch S 1 and COMS switch S 2, the other end is connected to the middle part of the connection lead of COMS switch S 3 and COMS switch S 4, one end of described stray capacitance Cs1 and stray capacitance Cs2 is connected to the both sides of Cx, the other end is ground connection all, described COMS switch S 1 is connected with COMS switch S 2, another termination power of COMS switch S 1, COMS switch S 2 other end ground connection.
Described deviation and gain circuitry 3 comprise swept resistance R5, variable resistance R7, resistance R6, resistance R8, op amp Op4; Described swept resistance R5 mono-termination power, other end ground connection, resistance R6 is connected with resistance R8, the resistance R6 other end is connected with the sliding end of swept resistance R5, the other end of resistance R8 is connected with op amp Op4 mouth, variable resistance R7 one end is connected with the mouth of op amp Op3 in metering circuit 2, the other end is connected to "-" level of op amp Op4, "+" level ground connection of op amp Op4, op amp Op4 is connected with the middle part of resistance R8 line with resistance R6 with the middle part of R7 line.
Embodiment 4: as shown in figures 1 to 6, a kind of big-and-middle-sized transport vehicle overload prewarning controller, comprises column weighting sensor 1, metering circuit 2, deviation and gain circuitry 3, A/D converter 4, LED digital display equipment 5, one-chip computer module 6, Vehicular accumulator cell 7, control relay circuit 8, power amplifier 9, loud speaker 10, described A/D converter 4, one-chip computer module 6, LED digital display equipment 5, loud speaker 10 is all positioned at vehicular drive indoor, column weighting sensor 1 is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor 1 of weighing is connected with metering circuit 2, metering circuit 2 is connected with deviation and gain circuitry 3, deviation is connected with A/D converter 4 with gain circuitry 3, LED digital display equipment 5, control relay circuit 8, power amplifier 9 is connected with one-chip computer module 6 respectively, power amplifier 9 and loud speaker 10 link together, Vehicular accumulator cell 7 is weighed with pillar gas sensor 1 respectively, one-chip computer module 6, A/D converter 4 is connected with control relay circuit 8,
Described column weighting sensor 1 comprises pressure head 11, capacitance weighing sensor 12, tight loop 13, dust boot 14, ground connection copper cash 15, carrying pressure head 16, block 17, check screw 18, top fixing plate 19, bottom fixed board 20; Described pressure head 11 is connected with top fixing plate 19, capacitance weighing sensor 12 is connected to below pressure head 11, carrying pressure head 16 is positioned at the below of capacitance weighing sensor 12, tight loop 13 will to be positioned at below capacitance weighing sensor 12 and the dust boot 14 be connected on carrying pressure head 16 is fixed on capacitance-type sensor 12, carrying pressure head 16 is fixed on bottom fixed board 20 by the block 17 on carrying pressure head 16 both sides by check screw 18, and ground connection copper cash 15 is connected with bottom fixed board 20 with top fixing plate 19;
Described capacitance weighing sensor 12 comprises sensor outer housing 21, outer sleeve 22, interior axle 23, stage clip 24, lower forcing screw 25, upper forcing screw 26, bottom loading plates 27, top movable plate 28, master collet 29, chute 30, ABS plastic plate 31, sight shield 32, capacitor plate 33, described outer sleeve 22 is separately fixed at the both sides of bottom loading plates 27, interior axle 23 is placed in outer sleeve 22, the part of interior axle 23 outside sensor outer housing 21 pass through on forcing screw 26 fix, chute 30 is had inside outer sleeve 22, stage clip 24 forcing screw 25 under interior axle 23 bottom is also used is fixed, master collet 29 is fixed on the chute 30 that there is the same height with outer sleeve 22 its both sides in the middle part of bottom loading plates 27, top movable plate 28 is connected with axle in both sides 23, by sequentially fixing ABS plastic 31 from top to bottom below top movable plate 28, sight shield 32 and capacitor plate 33 are also placed on master collet 29 top, ABS plastic 31 is fixed by order from bottom to up above bottom loading plates 27, sight shield 32 and capacitor plate 33 are also placed on bottom master collet 29.
Described metering circuit 2 comprises op amp Op1, op amp Op2, op amp Op3, cond C1, cond C2, stray capacitance Cs1, stray capacitance Cs2, unknown testing capacitance Cx, COMS switch S 1, COMS switch S 2, COMS switch S 3, COMS switch S 4, feedback resistance Rf_1, feedback resistance Rf_2, resistance R1, resistance R2, resistance R3, resistance R4;
Described op amp Op1 mouth is connected with resistance R2 one end, "-" level of op amp Op1 is connected with COMS switch S 3, "+" level ground connection, cond C1 one end its other end that is connected with "-" level of op amp Op1 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_1 one end is connected to op amp Op1 is connected with the mouth of op amp Op1, described op amp Op2 mouth is connected with resistance R1 one end, "-" level of op amp Op2 is connected with COMS switch S 4, "+" level ground connection, cond C2 one end its other end that is connected with "-" level of op amp Op2 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_2 one end is connected to op amp Op2 is connected with the mouth of op amp Op2, "-" level of described op amp Op3 is connected with one end of resistance R2, "+" level is connected with one end of resistance R1, described resistance R3 one end is connected on the connection lead of op amp Op3 and resistance R1, other end ground connection, described resistance R4 one end is connected to "-" level of op amp Op3, the other end is connected to the mouth of Op3, described unknown testing capacitance Cx one end is connected to the middle part of the connection lead of COMS switch S 1 and COMS switch S 2, the other end is connected to the middle part of the connection lead of COMS switch S 3 and COMS switch S 4, one end of described stray capacitance Cs1 and stray capacitance Cs2 is connected to the both sides of Cx, the other end is ground connection all, described COMS switch S 1 is connected with COMS switch S 2, another termination power of COMS switch S 1, COMS switch S 2 other end ground connection.
Described deviation and gain circuitry 3 comprise swept resistance R5, variable resistance R7, resistance R6, resistance R8, op amp Op4; Described swept resistance R5 mono-termination power, other end ground connection, resistance R6 is connected with resistance R8, the resistance R6 other end is connected with the sliding end of swept resistance R5, the other end of resistance R8 is connected with op amp Op4 mouth, variable resistance R7 one end is connected with the mouth of op amp Op3 in metering circuit 2, the other end is connected to "-" level of op amp Op4, "+" level ground connection of op amp Op4, op amp Op4 is connected with the middle part of resistance R8 line with resistance R6 with the middle part of R7 line.
Described control relay circuit 8 comprises NPN type triode T1, NPN type triode T3, PNP type triode T2, pull-up resistor R9, pull-up resistor R10, pull-up resistor R11, JRX13F type direct current normally closed relay K1, ignition lock S5, firing unit, pull-up resistor R9 one end is connected with the P2.5 mouth on one-chip computer module 6, the other end is connected with NPN type triode T1 base stage, the emitting stage ground connection of NPN type triode T1, NPN type triode T1 collecting electrode is connected with rated voltage Vdc, pull-up resistor R10 one end is connected with NPN type triode T1 collecting electrode, the other end is connected with the base stage of PNP type triode T2, the emitter of PNP type triode T2 is connected with rated voltage Vdc, PNP type triode T2 collecting electrode is connected with pull-up resistor R11, pull-up resistor R11 other end ground connection, the base stage of NPN type triode T3 is connected with the line between R11 with PNP type triode T2 collecting electrode, the grounded emitter of NPN type triode T3, NPN type triode T3 collecting electrode is connected with JRX13F type direct current normally closed relay K1, the other end of JRX13F type direct current normally closed relay K1 is connected with rated voltage Vdc, JRX13F type direct current normally closed relay K1 controls igniting switch S 5.
By reference to the accompanying drawings specific embodiment of the utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (4)
1. a big-and-middle-sized transport vehicle overload prewarning controller, is characterized in that: comprise column weighting sensor (1), metering circuit (2), deviation and gain circuitry (3), A/D converter (4), LED digital display equipment (5), one-chip computer module (6), Vehicular accumulator cell (7), control relay circuit (8), power amplifier (9), loud speaker (10), described A/D converter (4), one-chip computer module (6), LED digital display equipment (5), loud speaker (10) is all positioned at vehicular drive indoor, column weighting sensor (1) is positioned at vehicle railway carriage or compartment bucket chassis location, pillar gas sensor (1) of weighing is connected with metering circuit (2), metering circuit (2) is connected with deviation and gain circuitry (3), deviation is connected with A/D converter (4) with gain circuitry (3), LED digital display equipment (5), control relay circuit (8), power amplifier (9) is connected with one-chip computer module (6) respectively, power amplifier (9) and loud speaker (10) link together, Vehicular accumulator cell (7) is weighed with pillar gas sensor (1) respectively, one-chip computer module (6), A/D converter (4) is connected with control relay circuit (8),
Described column weighting sensor (1) comprises pressure head (11), capacitance weighing sensor (12), tight loop (13), dust boot (14), ground connection copper cash (15), carrying pressure head (16), block (17), check screw (18), top fixing plate (19), bottom fixed board (20), described pressure head (11) is connected with top fixing plate (19), capacitance weighing sensor (12) is connected to pressure head (11) below, carrying pressure head (16) is positioned at the below of capacitance weighing sensor (12), tight loop (13) will be positioned at capacitance weighing sensor (12) below and the dust boot (14) be connected in carrying pressure head (16) is fixed on capacitance-type sensor (12), check screw (18) will carry pressure head (16) by the block (17) on carrying pressure head (16) both sides and be fixed on bottom fixed board (20), ground connection copper cash (15) is connected with bottom fixed board (20) with top fixing plate (19),
Described capacitance weighing sensor (12) comprises sensor outer housing (21), outer sleeve (22), interior axle (23), stage clip (24), lower forcing screw (25), upper forcing screw (26), bottom loading plates (27), top movable plate (28), master collet (29), chute (30), ABS plastic plate (31), sight shield (32), capacitor plate (33), described outer sleeve (22) is separately fixed at the both sides of bottom loading plates (27), interior axle (23) is placed in outer sleeve (22), interior axle (23) is fixed by upper forcing screw (26) in the part of sensor outer housing (21) outside, there is chute (30) outer sleeve (22) inner side, stage clip (24) in interior axle (23) bottom and with lower forcing screw (25) fix, master collet (29) is fixed on the chute (30) that there is the same height with outer sleeve (22) its both sides, bottom loading plates (27) middle part, top movable plate (28) is connected with axle in both sides (23), in top movable plate (28) below by sequentially fixing ABS plastic (31) from top to bottom, sight shield (32) and capacitor plate (33) are also placed on master collet (29) top, ABS plastic (31) is fixed by order from bottom to up in bottom loading plates (27) top, sight shield (32) and capacitor plate (33) are also placed on master collet (29) bottom.
2. big-and-middle-sized transport vehicle overload prewarning controller according to claim 1, is characterized in that: described metering circuit (2) comprises op amp Op1, op amp Op2, op amp Op3, cond C1, cond C2, stray capacitance Cs1, stray capacitance Cs2, unknown testing capacitance Cx, COMS switch S 1, COMS switch S 2, COMS switch S 3, COMS switch S 4, feedback resistance Rf_1, feedback resistance Rf_2, resistance R1, resistance R2, resistance R3, resistance R4;
Described op amp Op1 mouth is connected with resistance R2 one end, "-" level of op amp Op1 is connected with COMS switch S 3, "+" level ground connection, cond C1 one end its other end that is connected with "-" level of op amp Op1 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_1 one end is connected to op amp Op1 is connected with the mouth of op amp Op1, described op amp Op2 mouth is connected with resistance R1 one end, "-" level of op amp Op2 is connected with COMS switch S 4, "+" level ground connection, cond C2 one end its other end that is connected with "-" level of op amp Op2 is connected with "+" level and ground connection, its other end of "-" level that described feedback resistance Rf_2 one end is connected to op amp Op2 is connected with the mouth of op amp Op2, "-" level of described op amp Op3 is connected with one end of resistance R2, "+" level is connected with one end of resistance R1, described resistance R3 one end is connected on the connection lead of op amp Op3 and resistance R1, other end ground connection, described resistance R4 one end is connected to "-" level of op amp Op3, the other end is connected to the mouth of Op3, described unknown testing capacitance Cx one end is connected to the middle part of the connection lead of COMS switch S 1 and COMS switch S 2, the other end is connected to the middle part of the connection lead of COMS switch S 3 and COMS switch S 4, one end of described stray capacitance Cs1 and stray capacitance Cs2 is connected to the both sides of Cx, the other end is ground connection all, described COMS switch S 1 is connected with COMS switch S 2, another termination power of COMS switch S 1, COMS switch S 2 other end ground connection.
3. big-and-middle-sized transport vehicle overload prewarning controller according to claim 1, is characterized in that: described deviation and gain circuitry (3) comprise swept resistance R5, variable resistance R7, resistance R6, resistance R8, op amp Op4; Described swept resistance R5 mono-termination power, other end ground connection, resistance R6 is connected with resistance R8, the resistance R6 other end is connected with the sliding end of swept resistance R5, the other end of resistance R8 is connected with op amp Op4 mouth, variable resistance R7 one end is connected with the mouth of op amp Op3 in metering circuit (2), the other end is connected to "-" level of op amp Op4, "+" level ground connection of op amp Op4, op amp Op4 is connected with the middle part of resistance R8 line with resistance R6 with the middle part of R7 line.
4. big-and-middle-sized transport vehicle overload prewarning controller according to claim 1, is characterized in that: described control relay circuit (8) comprises NPN type triode T1, NPN type triode T3, PNP type triode T2, pull-up resistor R9, pull-up resistor R10, pull-up resistor R11, JRX13F type direct current normally closed relay K1, ignition lock S5, firing unit, pull-up resistor R9 one end is connected with the P2.5 mouth on one-chip computer module (6), the other end is connected with NPN type triode T1 base stage, the emitting stage ground connection of NPN type triode T1, NPN type triode T1 collecting electrode is connected with rated voltage Vdc, pull-up resistor R10 one end is connected with NPN type triode T1 collecting electrode, the other end is connected with the base stage of PNP type triode T2, the emitter of PNP type triode T2 is connected with rated voltage Vdc, PNP type triode T2 collecting electrode is connected with pull-up resistor R11, pull-up resistor R11 other end ground connection, the base stage of NPN type triode T3 is connected with the line between R11 with PNP type triode T2 collecting electrode, the grounded emitter of NPN type triode T3, NPN type triode T3 collecting electrode is connected with JRX13F type direct current normally closed relay K1, the other end of JRX13F type direct current normally closed relay K1 is connected with rated voltage Vdc, JRX13F type direct current normally closed relay K1 controls igniting switch S 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428190.2U CN204055388U (en) | 2014-07-31 | 2014-07-31 | A kind of big-and-middle-sized transport vehicle overload prewarning controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420428190.2U CN204055388U (en) | 2014-07-31 | 2014-07-31 | A kind of big-and-middle-sized transport vehicle overload prewarning controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204055388U true CN204055388U (en) | 2014-12-31 |
Family
ID=52196958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420428190.2U Expired - Fee Related CN204055388U (en) | 2014-07-31 | 2014-07-31 | A kind of big-and-middle-sized transport vehicle overload prewarning controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204055388U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015362A (en) * | 2015-07-27 | 2015-11-04 | 昆明理工大学 | Rail transport vehicle intelligent starting and brake real-time control device based on internet of things |
| CN106297097A (en) * | 2016-08-01 | 2017-01-04 | 昆明理工大学 | A kind of Bluetooth handheld formula weight measures transmission and note printer in real time |
| WO2019153516A1 (en) * | 2018-02-06 | 2019-08-15 | 广州胜维电器制造有限公司 | Food processor |
-
2014
- 2014-07-31 CN CN201420428190.2U patent/CN204055388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015362A (en) * | 2015-07-27 | 2015-11-04 | 昆明理工大学 | Rail transport vehicle intelligent starting and brake real-time control device based on internet of things |
| CN106297097A (en) * | 2016-08-01 | 2017-01-04 | 昆明理工大学 | A kind of Bluetooth handheld formula weight measures transmission and note printer in real time |
| WO2019153516A1 (en) * | 2018-02-06 | 2019-08-15 | 广州胜维电器制造有限公司 | Food processor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204055388U (en) | A kind of big-and-middle-sized transport vehicle overload prewarning controller | |
| CN201069353Y (en) | A braking friction sheet thickness sensor for resistance car | |
| CN103439627B (en) | Train power supply leakage current test system and detection method | |
| KR101416816B1 (en) | Apparatus for measuring insulation resistance and method thereof | |
| CN101722802A (en) | System and method for monitoring tire pressure of automobile | |
| US6822431B2 (en) | Intrinsically safe sensor signal processing circuit | |
| KR101142461B1 (en) | Insulation resistance measurement circuit | |
| CN106324423A (en) | Method for detecting the adhesion of power charging pile contactor contact | |
| CN210572674U (en) | Voltage sampling channel leakage current detection equipment for serial battery module cell | |
| CN106965749A (en) | Automobile speech warning device and system | |
| CN103499744A (en) | Electric automobile insulation resistance on-line monitoring method based on frequency response | |
| CN107677883A (en) | A kind of current sensor adjustment in accuracy device and method | |
| NO20062094L (en) | Procedure for testing an intermediate link | |
| CN102538833A (en) | Method and assembly for detecting object contact or approach for car window anti-pinch control | |
| CN107238771B (en) | Device and method for measuring residual electric energy of direct-current high-voltage bus of electric automobile | |
| CN206376204U (en) | A kind of road early warning height limiter based on technological service | |
| CN106017715A (en) | Motor high temperature alarm and method implementing high temperature alarm | |
| CN212112751U (en) | Device and system are examined to earth magnet car | |
| CN207008013U (en) | A kind of PCB electric logging devices high pressure detection case | |
| CN203385751U (en) | Acceleration sensor | |
| CN204044257U (en) | Eddy current retarder stators static detection device | |
| CN205120877U (en) | Insulating detection device of car | |
| CN203364943U (en) | Overall vehicle weight metering system equipment with expanded not-long-enough static scale | |
| CN203551592U (en) | Acceleration sensor | |
| CN201066380Y (en) | A battery voltage tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |