SE533052C2 - Device and method for testing the ground conductor of an electropneumatic braking system - Google Patents
Device and method for testing the ground conductor of an electropneumatic braking systemInfo
- Publication number
- SE533052C2 SE533052C2 SE0802104A SE0802104A SE533052C2 SE 533052 C2 SE533052 C2 SE 533052C2 SE 0802104 A SE0802104 A SE 0802104A SE 0802104 A SE0802104 A SE 0802104A SE 533052 C2 SE533052 C2 SE 533052C2
- Authority
- SE
- Sweden
- Prior art keywords
- brake pressure
- axle
- control system
- pressure modulator
- brake control
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
- G01R27/18—Measuring resistance to earth, i.e. line to ground
-
- G01R31/025—
-
- G01R31/026—
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Description
25 30 35 40 533 G52 2 ledare och två dataledare. Därvid läggs även försörjningsspánningsledaren på jord, så att det vid uppfinningen blir två jordledare som svarar för skärmningen och som företrädesvis är anordnade kring data- eller signalledarna, till exempel tvinnade som en fläta eller en lindning. 25 30 35 40 533 G52 2 conductors and two data conductors. In this case, the supply voltage conductor is also laid on earth, so that in the invention there are two earth conductors which are responsible for the shielding and which are preferably arranged around the data or signal conductors, for example twisted as a braid or a winding.
Uppfinningen avser således användningen av en testkretsanordning för att kontrolle- ra funktionsförmågan för jordledarna i den perifera dataförbindelsen mellan bromstrycks- modulatorerna, varvid en sändaranordning i testkretsanordningen matar ut testsignaler på jordledarna och en vid den andra bromstrycksmodulatorn anordnad mottagaranordning läser av de utsända testsignalerna och själv bedömer dem eller leder dem vidare för be- dömning.The invention thus relates to the use of a test circuit device for checking the performance of the earth conductors in the peripheral data connection between the brake pressure modulators, wherein a transmitter device in the test circuit device outputs test signals on the earth conductors and a test signal device them or leads them on for assessment.
Testsignalerna kan särskilt ligga i millisekundområdet, dvs. under eller i närheten av 1 kHz, varigenom de blir lågfrekventa i förhållande till de överförda data. Det kan även ingå likspänningspotentialer.The test signals can in particular be in the millisecond range, ie. below or near 1 kHz, making them low frequency in relation to the transmitted data. It can also include DC potentials.
Vid uppfinningen anordnas testkretsanordningen företrädesvis direkt i bromstrycks- modulatorernas databusförstärkare. Därvid kan enhetliga sändnings- och mottagningsan- ordningar vara anordnade i samtliga de aktuella bromstrycksmodulatorerna, varigenom varje anordning kan kontrollera en jordledare respektive en på jordpotential lagd försörj- ningsspänníngsledare.In the invention, the test circuit arrangement is preferably arranged directly in the data bus amplifiers of the brake pressure modulators. In this case, uniform transmission and reception devices can be arranged in all the current brake pressure modulators, whereby each device can control a ground conductor and a supply voltage conductor laid on ground potential.
Testkretsen matar företrädesvis ut en testspänning med ett bestämt lågfrekvens- motstånd och ett till j ordledarens skärmningsfunktion anpassat högfrekvensmotstånd till datagränssnittets signalj ordledare. I den mottagande anordningens mottagningsanordning läggs jordledaren på en bestämd ingångsimpedans, varefter insignalnivån testas.The test circuit preferably outputs a test voltage with a certain low-frequency resistor and a high-frequency resistor adapted to the shielding function of the earth conductor to the signal conductor of the data interface. In the receiving device of the receiving device, the earth conductor is placed on a certain input impedance, after which the input signal level is tested.
Impedanserna väljs företrädesvis så att till exempel läckresistanser orsakade av fukt i kabelförbindelserna eller anslutningsstickkontakterna inte åstadkommer någon felreak- tion i övervakningsnivån.The impedances are preferably selected so that, for example, leakage resistances caused by moisture in the cable connections or the connection sockets do not cause an error reaction in the monitoring level.
Uppfinningen kommer nu att förklaras närmare med ledning av på ritningen visade utföringsexempel. Därvid visar fíg 1 ett blockschema över ett elektropneumatiskt broms- styrsystem och fíg 2 ett utföringsexempel av testkretsanordningen för dataförbindelsen mellan framaxelmodulatorn och bakaxelmodulatom.The invention will now be explained in more detail with reference to exemplary embodiments shown in the drawing. Fig. 1 shows a block diagram of an electropneumatic brake control system and Fig. 2 shows an embodiment of the test circuit device for the data connection between the front axle modulator and the rear axle modulator.
Det i fig 1 visade elektropneumatiska bromsstyrsystemet 1 har en centralmodul 2.The electropneumatic brake control system 1 shown in 1 g 1 has a central module 2.
Centralmodulen 2 svarar för den centrala databehandlingen och kan vara ansluten till andra, här inte visade dataförbindelser i fordonet. Vidare har det elektropneumatiska bromsstyrsystemet l en bromstrycksmodulator 3 för reglering av bromstrycket till den drivna bakaxeln, en bromstrycksmodulator 4 för reglering av bromstrycket till framaxeln, en bromstrycksmodulator 5 för reglering av bromstrycket till en extraaxel (höj - och sänk- bar axel) samt en ESP-modul (antisladdmodul) 6.The central module 2 is responsible for the central data processing and can be connected to other data connections not shown here in the vehicle. Furthermore, the electropneumatic brake control system 1 has a brake pressure modulator 3 for regulating the brake pressure to the driven rear axle, a brake pressure modulator 4 for regulating the brake pressure to the front axle, a brake pressure modulator 5 for regulating the brake pressure to an auxiliary axle. module (anti-slip module) 6.
Centralmodulen 2 innehåller en CAN-drivkrets 8 för två CAN-bussar 9, 10. Den första CAN -bussen 9 är förbunden med centralmodulen 2 via dennas CAN -drivkrets 8, med extraaxelns bromstrycksmodulator 5 via dennas bussdrivkrets 5-1 och med drivaxelns bromstrycksmodulator 3 via dennas bussdrívkrets 3-1. Den första CAN-bussen 9 har en 10 15 20 25 30 35 40 533 052 3 forsörjningsspänningsledare 9a, en jordledare 9b och två dataledare 9c och 9d. Därvid är dataledarna 9c, 9d anslutna till ingångarna 8-1, 8-2 på CAN-drivkretsen 8, j ordledaren 9b till exempel till centralmodulens 2 hus 2a och forsörjningsspånningsledaren 9a till en intern spänningsforsörjning 11 i centralmodulen 2.The central module 2 contains a CAN driver circuit 8 for two CAN buses 9, 10. The first CAN bus 9 is connected to the central module 2 via its CAN driver circuit 8, to the auxiliary shaft brake pressure modulator 5 via its bus driver circuit 5-1 and to the drive shaft brake pressure modulator 3 via its bus driver circuit 3-1. The first CAN bus 9 has a supply voltage conductor 9a, a ground conductor 9b and two data conductors 9c and 9d. In this case, the data conductors 9c, 9d are connected to the inputs 8-1, 8-2 of the CAN drive circuit 8, the ground conductor 9b, for example to the housing 2a of the central module 2 and the supply voltage conductor 9a to an internal voltage supply 11 in the central module 2.
Den andra CAN-bussen 10 är förbunden med centralmodulen 2 via dennas CAN- drivkrets 8, framaxelns bromstrycksmodulator 4 via dennas bussdrivkrets 4-1 och med antisladdxnodulen 6 via dennas bussdrivkrets 6-1. Den andra CAN-bussen 10 har på mot- svarande sätt en till forsörjningsspånningskällan 12 ansluten forsörjningsspänningsledare 10a, en till huset 2a ansluten jordledare l0b och CAN-dataledare 10c, 10d, som är anslutna till ingångar 8-3, 8-4 på CAN-drivkretsen 8. I pricip kan samtliga CAN-bussledare 10a, l0b, 10c, 10d användas gemensamt for modulerna 4, 6. Vid den visade utforingsfonnen kan dock antisladdmodulen 6 även vara ansluten till en separat forsörjningsspànningskäl- lan via en separat ansluten forsörjningsspänningsledare l3a och med en separat jordledare l3b till huset 2a eller någon annan jordanslutning. CAN-bussarna 9, 10 kan speciellt vara utforda som stj ärnskmvkablar.The second CAN bus 10 is connected to the central module 2 via its CAN driver circuit 8, the front axle brake pressure modulator 4 via its bus driver circuit 4-1 and to the anti-slip module 6 via its bus driver circuit 6-1. The second CAN bus 10 correspondingly has a supply voltage conductor 10a connected to the supply voltage source 12, an earth conductor 10b connected to the housing 2a and CAN data conductors 10c, 10d, which are connected to inputs 8-3, 8-4 of the CAN drive circuit 8. In principle, all CAN bus conductors 10a, 10b, 10c, 10d can be used together for the modules 4, 6. In the embodiment shown, however, the anti-slip module 6 can also be connected to a separate supply voltage source via a separately connected supply voltage conductor 13a and a separate earth conductor 13b to the housing 2a or some other earth connection. The CAN buses 9, 10 can be particularly challenging as control cables.
En perifer dataförbindelse 14, som vid uppfinningen företrädesvis även har formen av en fyrparttvinnad tråd, är anordnad mellan drivaxelns bromstrycksmodulator 3 och framaxelns bromstrycksmodulator 4. Bromstrycksmodulatorerna 3, 4 är försedda med andra bussdrivkretsar 3-2 och 4-2 for den perifera dataforbindelsen 14. Därvid ansluts de båda yttre ledarna l4a, 14b omkastat till anslutningarna på-de båda modulerna 3, 4 och läggs båda på signalj ord. De har till uppgift att skärma av de båda inuti belägna datale- darna 14c, 14d och är företrädesvis anordnade kring dataledarna 14c, 14d som fläta eller lindning.A peripheral data connection 14, which in the invention preferably also has the shape of a four-part twisted wire, is arranged between the brake pressure modulator 3 of the drive shaft and the brake pressure modulator 4 of the front axle. In this case, the two external conductors 14a, 14b are connected inverted to the connections on the two modules 3, 4 and both are laid on signal ground. They have the task of shielding the two data conductors 14c, 14d located inside and are preferably arranged around the data conductors 14c, 14d as a braid or winding.
Vid uppfinningen innehåller bussdrivkretsarna 3-2 och 4-2 for bromstrycksmodulato- rerna 3, 4 testkretsar 16a, 16b 17a, l7b, som övervakar de båda jordledarna l4a, l4b. I vardera bussdrivkretsen är därvid en sändaranordning 16a eller 17a förbunden med någon av de båda jordledarna l4a eller 14b och en mottagaranordning 16b eller 17 b förbunden med den andra jordledaren 14b eller l4a.In the invention, the bus drive circuits 3-2 and 4-2 for the brake pressure modulators 3, 4 contain test circuits 16a, 16b 17a, 17b, which monitor the two ground conductors 14a, 14b. In each bus driver circuit, a transmitter device 16a or 17a is then connected to one of the two earth conductors 14a or 14b and a receiver device 16b or 17b is connected to the other earth conductor 14b or 14a.
Sändaranordningarna 16a, 17a sänder ut testpulser TPl, TP2 på jordledaren l4a respektive l4b, varvid testpulserna TP l, TP2 till exempel ligger inom millisekundområdet, dvs. har en frekvens som är lika med eller lägre än 1 kHz. De av vardera sändaranordning- en 16a eller 17a utsända testpulsema TP1, TP2 tas emot av den i den respektive andra bussdrivkretsen belägna mottagaranordningen 17 b, 16b och analyseras direkt i mottagar- anordningen eller i någon annan anordning. Närmare bestämt innehåller drivaxehis bromstrycksmodulator 3 sändaranordningen 16a, som sänder ut testpulserna TP l på jordledaren l4a, varefter dessa testpulser tas emot av mottagaranordningen l7b och analy- seras. På motsvarande sätt sänder sändaranordningen 17a ut testpulserna TP2 på jordle- daren l4b, varefter dessa testpulser tas emot av mottagaranordningen 16b och analyseras.The transmitter devices 16a, 17a transmit test pulses TP1, TP2 on the earth conductor 14a and 14b, respectively, the test pulses TP1, TP2 being, for example, within the millisecond range, i.e. has a frequency equal to or less than 1 kHz. The test pulses TP1, TP2 transmitted by each transmitter device 16a or 17a are received by the receiver device 17b, 16b located in the respective second bus driver circuit and are analyzed directly in the receiver device or in some other device. More specifically, drive axle brake pressure modulator 3 includes the transmitter device 16a, which transmits the test pulses TP1 on the ground conductor 14a, after which these test pulses are received by the receiver device 17b and analyzed. Correspondingly, the transmitter device 17a transmits the test pulses TP2 on the ground conductor 14b, after which these test pulses are received by the receiver device 16b and analyzed.
I vardera modulatorn 3, 4 kan de ingående sändar- och mottagaranordningarna 16a, 16b och 17a, 1'7b vara utförda som en konstruktionsenhet eller en kretsanordning. 10 533 052 4 Fig 2 visar ett utforingsexempel av kretskopplingen for sändar- och mottagaranord- ningarna l6a, 16b och 17 a, 17b. Kretskopplingarna är företrädesvis identiskt utförda, så att det enda ytterligare som behövs är att ansluta den fyrparttvinnade tråden 14 med in- och utgångarna omkastade till de båda bromstrycksrnodulatorema 3 och 4.In each modulator 3, 4, the input transmitter and receiver devices 16a, 16b and 17a, 1'7b can be designed as a design unit or a circuit device. Fig. 2 shows an embodiment of the circuit connection for the transmitter and receiver devices 16a, 16b and 17a, 17b. The circuit connections are preferably of identical design, so that the only additional thing needed is to connect the four-part twisted wire 14 with the inputs and outputs reversed to the two brake pressure modulators 3 and 4.
Värdera sändarardningen 16a, 17 a avger företrädesvis en testpuls TP1. TPZ med ett bestämt lågfrekvensmotstånd och ett anpassat högfrekvensmotstånd till jordledaren 142., 14b. I den mottagande anordningens mottagningsanordning läggs jordledaren på en be- stämd ingångsimpedans, varefter insignalnivån testas.Evaluating the transmitter ground 16a, 17a preferably emits a test pulse TP1. TPZ with a specific low frequency resistor and an adapted high frequency resistor to the earth conductor 142., 14b. In the receiving device of the receiving device, the earth conductor is placed on a specific input impedance, after which the input signal level is tested.
Impedansema väljs företrädesvis så att till exempel läckresístanser orsakade av fukt i kabelforbindelserna eller anslutningsstickkontaktema inte åstadkommer någon felreak- tion í övervakningsnivån.The impedances are preferably selected so that, for example, leakage resistances caused by moisture in the cable connections or the connection sockets do not cause an error reaction in the monitoring level.
Claims (19)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052710A DE102007052710B4 (en) | 2007-11-06 | 2007-11-06 | Electropneumatic brake control arrangement for a vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
SE0802104L SE0802104L (en) | 2009-05-07 |
SE533052C2 true SE533052C2 (en) | 2010-06-15 |
Family
ID=40644319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0802104A SE533052C2 (en) | 2007-11-06 | 2008-10-07 | Device and method for testing the ground conductor of an electropneumatic braking system |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2009113804A (en) |
CN (1) | CN101428609B (en) |
DE (1) | DE102007052710B4 (en) |
SE (1) | SE533052C2 (en) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3101731A1 (en) * | 1981-01-21 | 1982-08-26 | Wabco Fahrzeugbremsen Gmbh, 3000 Hannover | ANTI-BLOCKING SYSTEM, ESPECIALLY FOR A MULTI-AXIS VEHICLE |
DE4022671A1 (en) * | 1990-07-17 | 1992-01-23 | Wabco Westinghouse Fahrzeug | ELECTRONIC BRAKE SYSTEM FOR ROAD VEHICLES |
DE59208057D1 (en) * | 1991-10-26 | 1997-03-27 | Daimler Benz Ag | DATA COMMUNICATION SYSTEM |
DE4339570B4 (en) * | 1993-11-19 | 2004-03-04 | Robert Bosch Gmbh | Electronic braking system |
US5618012A (en) * | 1995-01-12 | 1997-04-08 | Space Systems/Loral, Inc. | Satellite stabilization system |
JP3251471B2 (en) * | 1995-07-07 | 2002-01-28 | 株式会社日立製作所 | Shielded cable and connector and signal transmission system |
JP3499379B2 (en) * | 1996-09-10 | 2004-02-23 | 株式会社オートネットワーク技術研究所 | Power distribution system |
JP3288390B2 (en) * | 1997-02-19 | 2002-06-04 | シーメンス アクチエンゲゼルシヤフト | Vehicle brake system and method for data transmission in electrically controlled vehicle brake system |
JP4409039B2 (en) * | 2000-04-04 | 2010-02-03 | 株式会社アドバンテスト | Path fault diagnostic device, path fault diagnostic method, and semiconductor integrated circuit device having self-diagnosis function |
GB2402983B (en) * | 2003-06-18 | 2006-07-19 | Westinghouse Brakes | Digital databus |
DE102004010743A1 (en) * | 2004-03-05 | 2006-01-19 | Wabco Gmbh & Co.Ohg | Electrically controlled pneumatic brake system for a vehicle |
JP2006035967A (en) * | 2004-07-26 | 2006-02-09 | Hitachi Ltd | Braking control device for automobile |
CN2925948Y (en) * | 2006-02-27 | 2007-07-25 | 华南理工大学 | Multi-bridge driving system of mixed-dynamic vehicle |
-
2007
- 2007-11-06 DE DE102007052710A patent/DE102007052710B4/en active Active
-
2008
- 2008-10-07 SE SE0802104A patent/SE533052C2/en unknown
- 2008-10-15 CN CN2008101661947A patent/CN101428609B/en active Active
- 2008-10-31 JP JP2008303139A patent/JP2009113804A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
SE0802104L (en) | 2009-05-07 |
CN101428609B (en) | 2013-02-13 |
DE102007052710B4 (en) | 2011-02-17 |
DE102007052710A1 (en) | 2009-06-25 |
CN101428609A (en) | 2009-05-13 |
JP2009113804A (en) | 2009-05-28 |
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