CN103487704A - Switch with line fault diagnostic function - Google Patents
Switch with line fault diagnostic function Download PDFInfo
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- CN103487704A CN103487704A CN201310474646.9A CN201310474646A CN103487704A CN 103487704 A CN103487704 A CN 103487704A CN 201310474646 A CN201310474646 A CN 201310474646A CN 103487704 A CN103487704 A CN 103487704A
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Abstract
The invention discloses a switch with a line fault diagnostic function and relates to the technical field of manufacturing of engineering machinery and electronic circuits. The switch comprises a resistance network device mounted in the switch, wherein the resistance network device comprises a first resistor and a second resistor; after the first resistor is connected with the switch in series, the first resistor is connected with the second resistor in parallel; a connection point of the first resistor and the second resistor is connected with a connection lead wire; a connection point of the second resistor and the switch is connected with a power supply or a grounded end. According to the switch with the line fault diagnostic function, the problems that the time of judgment and maintenance of line faults is long when the engineering machinery or cars are in faults and cost is high can be solved.
Description
Technical field
The present invention relates to engineering machinery and electronic circuit manufacturing technology field, especially a kind of switch with Circuit fault diagnosis function.
Background technology
In the controller line of traditional engineering machinery or automobile, each switch is inputted certain level to controller by connecting wire, and these switches are all directly with the connector on controller, to be connected after being connected with wire, as shown in Figure 1; Only show the situation that two line conductors are connected with controller in figure, inner each circuit of these controllers are provided with two resistance, as to access a low level road resistance be resistance R 1 and resistance R 2; One road resistance of access high level is resistance R 3 and resistance R 4; After one end of two resistance links together, with the energy processing, with the input end of the signal processing module of transmission voltage and current signal, be connected, the output terminal of signaling module is connected with the input end of microcontroller; The other end of two resistance is connecting valve and power supply or ground connection respectively.Wire line between switch and controller is more and very long, if there is fault, or throws off the controller connector and measures with multimeter, or use special-purpose failure diagnostic apparatus to be checked, could determine it is the problem of controller or the problem in circuit.If measure with multimeter, often occur that circuit is oversize, the problem that the pen meter of universal meter line falls short of.If checked with special-purpose failure diagnostic apparatus, special-purpose failure diagnostic apparatus is expensive on the one hand, special-purpose failure diagnostic apparatus can only be diagnosed certain controller on the other hand, also need dismounting controller connector, if the controller installation site is hidden, it is more inconvenient to use, and makes engineering machinery or the judgement of automobile line fault and lengthens servicing time, cause the maintenance of equipment cost high, plant factor is low.
Summary of the invention
The purpose of this invention is to provide a kind of switch that the circuit fault diagnosis functions are arranged, it can solve engineering machinery or automobile length consuming time when judgement line fault and maintenance, the problem that cost is high.
In order to address the above problem, the technical solution used in the present invention is: this switch that the circuit fault diagnosis functions are arranged, comprise the resistor network device in switch, and described resistor network device includes the first resistance and the second resistance; Described the first resistance is in parallel with described the second resistance after connecting with described switch, and described the first resistance is connected with load with the link of described the second resistance; Described the second resistance is connected with power supply with the link of described switch.
In technique scheme, another concrete scheme can also be: this switch that the circuit fault diagnosis functions are arranged, comprise the resistor network device in switch, and described resistor network device includes the first resistance and the second resistance; Described the first resistance is in parallel with described the second resistance after connecting with described switch, and described the first resistance is connected with load with the link of described the second resistance; Described the second resistance is connected with earth terminal with the link of described switch.
Owing to having adopted technique scheme, compared with prior art, the beneficial effect had is in the present invention:
The present invention has the Circuit fault diagnosis function, therefore when engineering machinery or automobile are keeped in repair, can allow the maintenance personal confirm at an easy rate circuit and the reason of fault, greatly shortened diagnosis and the servicing time of faulty line, reduce maintenance cost, improved the service efficiency of equipment.
The accompanying drawing explanation
Fig. 1 is traditional construction machinery controller switch incoming line figure.
Fig. 2 is switch internal wiring figure of the present invention.
Fig. 3 is the low level switch access of the present invention schematic diagram.
Fig. 4 is the switch access schematic diagram of high level of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is traditional construction machinery controller switch incoming line figure, has a plurality of switches to be connected to controller 1 by many wires; Only provided the situation signal of switch S 2 accesses of the low level switch S 1 of a route and a road high level in Fig. 1; Inner each circuit of controller 1 is provided with two resistance, as to access a low level road resistance be resistance R 1 and resistance R 2, switch S 1 ground connection; One road resistance of access high level is resistance R 3 and resistance R 4, and switch S 2 meets voltage end Vdd;
With energy, processing is connected with the input end of the signal processing module of transmission voltage, current signal one end of resistance R 1 and resistance R 2; The output terminal of described signaling module is connected with the input end of microcontroller; The other end of resistance R 1 and resistance R 2 is connected with voltage end Vcc with wire 2 respectively; With energy, processing is connected with the input end of the signal processing module of transmission voltage, current signal one end of resistance R 3 and resistance R 4; The other end of resistance R 3 and resistance R 4 is connected with earth terminal with wire 2 respectively.
The switch that the circuit fault diagnosis functions are arranged shown in Fig. 2 and Fig. 3, illustrate one group by switch through connecting the situation of wire to controller, include switch S 1 and the controller 1 be connected with switch S 1 by being connected wire 2; Switch S 1 is connected with the resistor network device with being connected between wire 2, and described resistor network device is arranged in switch S 1; It includes the first resistance R 5 and the second resistance R 6; The first resistance R 5 is in parallel with the second resistance R 6 after connecting with switch S 1, the tie point of the first resistance R 5 and the second resistance R 6 be connected wire 2 connections; The second resistance R 6 is connected earth terminal with the tie point of switch S 1.Connect wire 2 and be connected with the interior resistance R 1 of controller 1, an end of the other end of resistance R 1 and resistance R 2 and the input end of signal processing module are connected; The other end of R2 is connected with voltage end Vcc; The output terminal of signal processing module is connected with the input end of microcontroller.Resistance R 5 and resistance R 6 form the resistor network device, form bleeder circuit together with switch S 1, for reflecting the state of wire 2.Low level switch access schematic diagram shown in Fig. 3, the resistance value of resistance R 5, resistance R 6, resistance R 1, resistance R 2 is by the Ohm law reasonable distribution; The interior resistance R 1 of controller 1 and resistance R 2 are made as to the A point with the tie point of the input end of signal processing module, and the A point voltage is divided into V1, V2, V3, V4, V5,
When wire 2 non-fault, if the S1 closure, the A point voltage is V1;
When wire 2 non-fault, if S1 disconnects, the A point voltage is V2;
When wire 2 shorted to earth, the A point voltage is V3;
When wire 2 opens circuit, the A point voltage is V4;
When S1 misconnection power supply, the A point voltage is V5;
The magnitude of voltage of V1, V2, V3, V4, V5 is by following various definite:
V1=Vcc×（R5‖R6+R1）／(R5‖R6+R1+R2)；
V2=Vcc×（R6+R1）／(R6+R1+R2)；
V3=Vcc×R1／(R1+R2)；
V4=Vcc；
V5＞Vcc+2v；
Microcontroller collects the A point voltage by signal processing module, then passes through instrument or LED light by indicating fault out, just can allow the maintenance personal confirm faulty line and reason, just can whether normally distinguish judgement to fault and the state of wire 2.
The switch that the circuit fault diagnosis functions are arranged shown in Fig. 2 and Fig. 4, illustrate another group by switch through connecting the situation of wire to controller, include switch S 2 and the controller 1 be connected with switch S 2 by being connected wire 2; Switch S 2 is connected with the resistor network device with being connected between wire 2, and described resistor network device is arranged in switch S 2; It includes the first resistance R 5 and the second resistance R 6; The first resistance R 5 is in parallel with the second resistance R 6 after connecting with switch S 2, the tie point of the first resistance R 5 and the second resistance R 6 be connected wire 2 connections; The second resistance R 6 is connected voltage end Vdd with the tie point of switch S 2.Connect wire 2 and be connected with the interior resistance R 3 of controller 1, an end of the other end of resistance R 3 and resistance R 4 and the input end of signal processing module are connected; The other end of R4 is connected with earth terminal; The output terminal of signal processing module is connected with the input end of microcontroller.
Resistance R 5 and resistance R 6 form the resistor network circuit, form bleeder circuit together with switch S 2, for reflecting the state of wire 2.The effective switch access of high level shown in Fig. 4 schematic diagram, resistance R 5, resistance R 6, the resistance value of resistance R 3 and resistance R 4 is by the Ohm law reasonable distribution, resistance R 3 in controller 1 and resistance R 4 are made as to the B point with the input end tie point of signal processing module, the B point voltage is divided into V6, V7, V8, V9, V10
When wire 2 non-fault, if the S2 closure, the B point voltage is V6;
When wire 2 non-fault, if S2 disconnects, the B point voltage is V7;
When wire 2 shorted to earth, the B point voltage is V8;
When wire 2 opens circuit, the B point voltage is V9;
When S1 misconnection ground wire, the B point voltage is V10;
The magnitude of voltage of V6, V7, V8, V9, V10 is by following various definite:
V6=Vdd×R4／(R5‖R6+R3+R4)；
V7=Vdd×R4／(R6+R3+R4)；
V8=0；
V9=0；
V10={VDD×R4／(R3+R4)}×{[R5‖（R3+R4）]／[R5‖（R3+R4）+R6]}；
Microcontroller collects the B point voltage by signal processing module, by above different magnitude of voltage, just can whether normally distinguish judgement to fault and the state of wire 2; By instrument or LED light by indicating fault out, just can allow the maintenance personal confirm faulty line and reason.
Install the resistor network device additional by the known the present invention of upper two embodiment in regular tap, by the resistance in the resistor network device with mate related resistors in controller, make circuit there are fault diagnosis functions, just can realize the fault judgement of controller to line broken circuit, shorted to earth and misconnection, then pass through instrument or LED light by indicating fault out, reach and shorten the time of confirming faulty line and maintenance, reduce maintenance cost and improve plant factor.
Claims (2)
1. the switch that the circuit fault diagnosis functions are arranged is characterized in that: comprise the resistor network device in switch, described resistor network device includes the first resistance (R5) and the second resistance (R6); Described the first resistance (R5) is in parallel with described the second resistance (R6) after connecting with described switch, and described the first resistance (R5) is connected with load with the link of described the second resistance (R6); Described the second resistance (R6) is connected with power supply with the link of described switch.
2. the switch that the circuit fault diagnosis functions are arranged is characterized in that: comprise the resistor network device in switch, described resistor network device includes the first resistance (R5) and the second resistance (R6); Described the first resistance (R5) is in parallel with described the second resistance (R6) after connecting with described switch, and described the first resistance (R5) is connected with load with the link of described the second resistance (R6); Described the second resistance (R6) is connected with earth terminal with the link of described switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310474646.9A CN103487704A (en) | 2013-10-12 | 2013-10-12 | Switch with line fault diagnostic function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310474646.9A CN103487704A (en) | 2013-10-12 | 2013-10-12 | Switch with line fault diagnostic function |
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| CN103487704A true CN103487704A (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310474646.9A Pending CN103487704A (en) | 2013-10-12 | 2013-10-12 | Switch with line fault diagnostic function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823462A (en) * | 2014-03-06 | 2014-05-28 | 深圳市赛灵卓科技有限公司 | Engineering machinery use controller with fault diagnosis function and engineering machinery control method |
| CN111771130A (en) * | 2018-09-26 | 2020-10-13 | 日立建机株式会社 | Safety switch input diagnosis device and working machine using same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11312288A (en) * | 1998-04-28 | 1999-11-09 | Mikuni Corp | Diagnostic method for sensor faults |
| CN2781390Y (en) * | 2005-03-14 | 2006-05-17 | 重庆汇力汽车电子仪表有限公司 | Vehicle loading short circuit, open circuit predetection circuit |
| CN201212901Y (en) * | 2008-07-01 | 2009-03-25 | 青岛港（集团）有限公司 | Short circuit detection device |
| CN201829385U (en) * | 2010-07-13 | 2011-05-11 | 北汽福田汽车股份有限公司 | Press switch with diagnosis function and press key switch device |
| CN202362416U (en) * | 2011-11-23 | 2012-08-01 | 北京天能继保电力科技有限公司 | Detection system of one-phase ground fault line selection in small current neutral grounding system |
| CN102830351A (en) * | 2012-08-31 | 2012-12-19 | 宁德时代新能源科技有限公司 | Device for condition monitoring and fault diagnosis of high-voltage switch |
-
2013
- 2013-10-12 CN CN201310474646.9A patent/CN103487704A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11312288A (en) * | 1998-04-28 | 1999-11-09 | Mikuni Corp | Diagnostic method for sensor faults |
| CN2781390Y (en) * | 2005-03-14 | 2006-05-17 | 重庆汇力汽车电子仪表有限公司 | Vehicle loading short circuit, open circuit predetection circuit |
| CN201212901Y (en) * | 2008-07-01 | 2009-03-25 | 青岛港（集团）有限公司 | Short circuit detection device |
| CN201829385U (en) * | 2010-07-13 | 2011-05-11 | 北汽福田汽车股份有限公司 | Press switch with diagnosis function and press key switch device |
| CN202362416U (en) * | 2011-11-23 | 2012-08-01 | 北京天能继保电力科技有限公司 | Detection system of one-phase ground fault line selection in small current neutral grounding system |
| CN102830351A (en) * | 2012-08-31 | 2012-12-19 | 宁德时代新能源科技有限公司 | Device for condition monitoring and fault diagnosis of high-voltage switch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103823462A (en) * | 2014-03-06 | 2014-05-28 | 深圳市赛灵卓科技有限公司 | Engineering machinery use controller with fault diagnosis function and engineering machinery control method |
| CN111771130A (en) * | 2018-09-26 | 2020-10-13 | 日立建机株式会社 | Safety switch input diagnosis device and working machine using same |
| US11562864B2 (en) | 2018-09-26 | 2023-01-24 | Hitachi Construction Machinery Co., Ltd. | Safety switch input diagnosis device and work machine using safety switch input diagnosis device |
| CN111771130B (en) * | 2018-09-26 | 2023-05-02 | 日立建机株式会社 | Safety switch input diagnostic device and work machine |
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