CN101937034A - Durability test stand for vehicle distribution box - Google Patents
Durability test stand for vehicle distribution box Download PDFInfo
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- CN101937034A CN101937034A CN 201010240648 CN201010240648A CN101937034A CN 101937034 A CN101937034 A CN 101937034A CN 201010240648 CN201010240648 CN 201010240648 CN 201010240648 A CN201010240648 A CN 201010240648A CN 101937034 A CN101937034 A CN 101937034A
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- relay
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Abstract
The invention discloses a durability test stand for a vehicle distribution box. The durability test stand comprises a computer, and a digital I/O card and an A/D card which are arranged on the computer, wherein the anode of a voltage-stabilizing power supply is connected to the anode of one output port of the digital I/O card; one end of a coil of a relay in a multi-circuit relay array is connected to the cathode of the voltage-stabilizing power supply, while the other end is connected to the cathode of one output port of the digital I/O card; the anode of one input port of the A/D card is connected to one end of each fuse wire in the distribution box; and the other end of each fuse wire is connected to the cathode of one input port of the A/D card. An upper computer program in the computer controls the A/D card, acquires the voltage condition at two ends of each fuse wire and judges the fusing situation of the fuse wires. Because an adjustable constant-current power supply is adopted to supply constant current for the fuse wires, the defect that a load value is inconvenient to change when the load is simulated is overcome by using a high-precision high-power resistor in the prior art and the over-current test on the fuse wires can be finished.
Description
Technical field
The invention belongs to the Automobile Detection device, be specifically related to a kind of automobile block terminal durable test stand.
Background technology
In the electrical system of automobile, block terminal is almost being controlled the destiny of all electrical appliances in the automobile just as human heart.It is responsible for distributing to the power consumption of each electrical appliance, is controlling the size of the electric current of each electrical appliance, is ensureing the security of operation of each electrical appliance.Therefore, need a kind of experimental provision that the reliability of automobile block terminal is analyzed and estimated.Existing block terminal durable test equipment is made up of stabilized voltage supply and fictitious load mostly, provide stable voltage by stabilized voltage supply to block terminal and fictitious load, fictitious load is made up of high-accuracy high-power resistance mostly, with the electrical appliance of high-accuracy each distribution branch road of high-power resistance simulation block terminal, produce one by stabilized voltage supply and fictitious load and pass through the durability test of the electric current realization of fuse fuse.But not enough is, during with high-accuracy high-power resistance fictitious load, load value changes inconvenience.
Summary of the invention
The purpose of this invention is to provide a kind of automobile block terminal durable test stand, it adjusts the output of constant-current supply according to the actual loading of different block terminals, for fuse provides constant electric current, and break-make that can be by pilot relay is to realize the power on/off of fuse is controlled by standard time sequence, finish simulation, thereby the reliability of automobile block terminal is estimated through the automobile block terminal is carried out long circulation experiment to the fuse working condition.
A kind of automobile block terminal durable test stand of the present invention comprises computing machine, is located at digital I/O card and A/D card on the computing machine, it is characterized in that:
The positive pole of one stabilized voltage supply is connected with the positive pole of an output port of digital I/O card, and the negative pole of an end of the coil of the relay in the multicircuit relay array and the negative pole connection of stabilized voltage supply, the other end and an output port of digital I/O card (with output port anodal corresponding) is connected; The positive and negative polarities of stabilized voltage supply are connected with the coil two ends of each relay in the block terminal respectively, and are all closed to guarantee each relay in the block terminal;
One end of each fuse that the positive level of one multiple constant current power supply and block terminal are interior is connected, one end of the switch of the relay in the other end of each road fuse and the multicircuit relay array is connected, and the other end of the switch of the relay in the multicircuit relay array is connected with the negative pole of multiple constant current power supply;
By the host computer procedure control figure I/O card in the computing machine, control the break-make of multicircuit relay array switch again, thus the electric power thus supplied that control multiple constant current power supply is given each road fuse in the block terminal, to simulate the working condition of each road fuse.
An end of each fuse is connected in the positive pole of an input port of A/D card and the block terminal, and the negative pole of the other end of each fuse and an input port of A/D card (with input port anodal corresponding) is connected.By the host computer procedure in computing machine control A/D card, and gather the voltage condition at each fuse two ends, road and judge the blown state of fuse.
Described a kind of automobile block terminal durable test stand, also comprise a high and low temperature environment case/shaking table, block terminal places on this high and low temperature environment case/shaking table, and in order to the working environment of simulation block terminal, and the reliability to block terminal is tested under the operating mode of being simulated.
Described a kind of automobile block terminal durable test stand, its described stabilized voltage supply is the 12V stabilized voltage supply.
The present invention compares with existing block terminal durable test equipment and has the following advantages: owing to adopt the adjustable constant-flow power supply to provide constant electric current to fuse, by adjust the output of constant-current supply according to the actual loading of different block terminals, when having overcome the high-accuracy high-power resistance fictitious load of existing usefulness, load value changes inconvenient shortcoming, and break-make that can be by pilot relay to be to realize the power on/off of fuse is controlled by standard time sequence, and the output current that can change constant-current supply simultaneously is to finish the excess current test of fuse.
Description of drawings
Fig. 1 is a system chart of the present invention.
Fig. 2 is that sequential of the present invention is provided with process flow diagram.
Fig. 3 is a test flow chart of the present invention.
Embodiment
The present invention is further described as follows below in conjunction with accompanying drawing:
A kind of automobile block terminal durable test stand referring to shown in Figure 1 comprises computing machine 1-10, is located at digital I/O card 1-11 and A/D card 1-12 on the computing machine;
The positive pole of the stabilized voltage supply 1-2 of one 12V is connected with the anodal 1-1 of (one tunnel) output port of digital I/O card 1-11, and an end of the coil of (one tunnel) relay among the multicircuit relay battle array 1-3 is connected with the negative pole of stabilized voltage supply, the other end is connected with the negative pole 1-4 of (one tunnel) output port of digital I/O card; The positive and negative polarities of stabilized voltage supply are connected with (one tunnel) coil two ends of each relay 1-7 in the block terminal respectively, and are all closed to guarantee each relay in the block terminal;
The end of each fuse 1-6 that the positive level of one multiple constant current power supply 1-5 and block terminal are interior is connected, one end of the switch of the relay among the other end of each road fuse and the multicircuit relay array 1-3 is connected, and the other end of the switch of the relay in the multicircuit relay array is connected with the negative pole of multiple constant current power supply 1-5;
By the host computer procedure control figure I/O card 1-11 among the computing machine 1-10, control the break-make of multicircuit relay array 1-3 switch again, thereby the electric power thus supplied that control multiple constant current power supply 1-5 gives each road fuse 1-6 in the block terminal is to simulate the working condition of each road fuse.
The anodal 1-8 of (one tunnel) input port of A/D card 1-12 is connected with the end of each fuse 1-6 in the block terminal, and the other end of each fuse is connected with the anodal 1-9 of (one tunnel) input port of A/D card 1-12.By the host computer procedure among computing machine 1-10 control A/D card 1-12, and gather the voltage condition at each fuse two ends, road and judge the blown state of fuse.
Also comprise a high and low temperature environment case/shaking table, block terminal places on this high and low temperature environment case/shaking table, in order to the working environment of simulation block terminal, and under the operating mode of being simulated the reliability of block terminal is tested.
Test to each the road fuse in the block terminal is the same with principle shown in Figure 1, just each road fuse takies the way word output port of digital I/O card 1-11, a relay of multicircuit relay array, the road output of constant-current supply 1-5 and the road analog input port of A/D card 1-12 separately, and the test of each road fuse is separate.
For example: the first via digital output port 1-1 of digital I/O card 1-11 is connected with the positive pole (+) of 12V stabilized voltage supply 1-2, an end of the coil of first via relay 1-3 is connected in the negative pole (-) of 12V stabilized voltage supply 1-2 and the relay array, and the other end of the coil of relay 1-3 is connected with the negative pole 1-4 of digital I/O card.To be connected the relay that guarantees in the block terminal all closed with the coil two ends of relay 1-7 in the block terminal respectively at the two ends of 12V stabilized voltage supply 1-2.
The end of the first via fuse 1-6 that the positive level (+) of the first via of constant-current supply 1-5 and block terminal are interior is connected, the other end of fuse 1-6 is connected with an end of the switch terminals of relay 1-3, and the other end of the switch terminals of relay 1-3 is connected with the negative pole (-) of the first via of constant-current supply 1-5.Thereby the break-make by the host computer procedure control figure I/O card 1-11 pilot relay 1-3 switch among the computing machine 1-10 is controlled the electric power thus supplied that constant-current supply 1-5 gives fuse 1-6, with the working condition of the fuse 1-6 in the simulation block terminal.
The first via analog input port 1-8 of A/D card 1-12 is connected with the end of first via fuse 1-6 in the block terminal, and the other end of fuse 1-6 is connected with the negative pole 1-9 of A/D card 1-12.The magnitude of voltage of gathering fuse 1-6 two ends by the host computer procedure among computing machine 1-10 control A/D card 1-12 go forward side by side line data analysis and processing.
Test to other each road fuse in the block terminal is the same with principle shown in Figure 1, just each road fuse takies the way word output port of digital I/O card 1-11, a relay of multicircuit relay array, the road output of constant-current supply 1-5 and the road analog input port of A/D card 1-12 separately, and the test of each road fuse is separate.
A kind of automobile block terminal durable test stand of the present invention, its sequential are provided with step referring to Fig. 2:
(1) sequential initialization 2-1 is initialized as complete 0 with sequential.Complete 0 array according to the block terminal fuse way of required test and multiple constant current power supply and multicircuit relay array repeat circuit quantity and a relevant N*N of sequential standard-creation.Block terminal standard and first via fuse with certain vehicle are example, and the sequential of this block terminal 1 hour was a circulation, and per minute changes a next state, and then this sequential initialization will produce one by 60 0 sequential of forming, as:
000000000000000000000000000000000000000000000000000000000000
(2) selector channel 2-2 and select time 2-3, and to selected passage and the time corresponding sequential position sequential 2-4 that makes amendment, " 0 " of selected passage and time corresponding sequential position is changed into " 1 ", constantly " 0 " of corresponding sequential position change " 1 " into such as selector channel 1 the 1st minute and with this, then sequential becomes:
100000000000000000000000000000000000000000000000000000000000
The fuse of then set temporal representation passage 1 was switched in the time of the 1st minute, outage in the 2nd to the 60th minute.
Whether sequence modification finishes 2-5 when (3) judging according to the sequential standard of block terminal, if do not finish, repeating step (2) then all is changed to " 1 " with " 0 " of required being set to " 1 ", and 2-6 is finished in the sequential setting if the sequential setting is finished.
A kind of automobile block terminal durable test stand of the present invention, its testing process are referring to Fig. 3:
(1) starts test 3-1, read and finish test duration value 3-2, and read sequential value 3-3 according to the deadline of reading.
(2) pilot relay and keep 1 minute 3-4, if the sequential value that reads is " 0 ", then pilot relay disconnects the switch terminals of relay, if the sequential value that reads is " 1 ", then pilot relay makes the switch terminals closure of relay.
(3) the voltage acquisition 3-6 at fuse two ends, and judge the fusing situation of fuse according to the magnitude of voltage at the fuse two ends that collect.3-5 when relay switch is closed is if the magnitude of voltage at the fuse two ends of being gathered, then shows the fuse 3-9 that do not fuse less than 1V3-7; If the magnitude of voltage at the fuse two ends of being gathered, then shows the fuse 3-8 that fused greater than 1V3-7 (for the voltage of constant-current supply), simultaneously the fuse passage and the time that fuse are write down 3-10.
(4) relay status keeps 3-11 after 1 minute, the completed time value 3-12 of record block terminal long duration test.
(5) judge whether to stop to test 3-13, if need proceed test, then repeating step (1) is to step (4), if need not continue test, 3-14 then quits a program.
The present invention is by the break-make of each relay switch in the control multicircuit relay array, thereby the power on/off situation of each fuse is with the working condition of each fuse in the simulation block terminal in the control block terminal, simultaneously block terminal is placed shaking table and high and low temperature environment case working environment, adopt the present invention that the automobile block terminal is tested for a long time and can be estimated the reliability of automobile block terminal with the simulation block terminal.
Claims (3)
1. an automobile block terminal durable test stand comprises computing machine (1-10), is located at digital I/O card (1-11) and A/D card (1-12) on the computing machine, it is characterized in that:
The positive pole of one stabilized voltage supply (1-2) is connected with the positive pole (1-1) of an output port of digital I/O card (1-11), and an end of the coil of the relay in the multicircuit relay array (1-3) is connected with the negative pole of stabilized voltage supply, the other end is connected with the negative pole (1-4) of an output port of digital I/O card; The positive and negative polarities of stabilized voltage supply (1-2) are connected with the coil two ends of each relay (1-7) in the block terminal respectively;
One end of each fuse (1-6) that the positive level of one multiple constant current power supply (1-5) and block terminal are interior is connected, one end of the switch of the relay in the other end of each road fuse and the multicircuit relay array (1-3) is connected, and the other end of the switch of the relay in the multicircuit relay array (1-3) is connected with the negative pole of multiple constant current power supply;
The positive pole (1-8) of an input port of A/D card (1-12) is connected with an end of each fuse (1-6) in the block terminal, and the other end of each fuse (1-6) is connected with the negative pole (1-9) of an input port of A/D card (1-12).
2. a kind of automobile block terminal durable test stand according to claim 1 is characterized in that: also comprise a high and low temperature environment case/shaking table, block terminal places on this high and low temperature environment case/shaking table.
3. a kind of automobile block terminal durable test stand according to claim 1 is characterized in that: described stabilized voltage supply (1-2) is the 12V stabilized voltage supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240648 CN101937034B (en) | 2010-07-29 | 2010-07-29 | Durability test stand for vehicle distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240648 CN101937034B (en) | 2010-07-29 | 2010-07-29 | Durability test stand for vehicle distribution box |
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| CN101937034A true CN101937034A (en) | 2011-01-05 |
| CN101937034B CN101937034B (en) | 2012-12-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941110A (en) * | 2013-01-21 | 2014-07-23 | 重庆长安汽车股份有限公司 | Durability test device and test method for vehicle rotary connector |
| CN106154154A (en) * | 2016-09-05 | 2016-11-23 | 郭金虎 | One key multiple-effect automobile fuse relay device for fast detecting |
| CN106885985A (en) * | 2017-02-28 | 2017-06-23 | 中国人民解放军空军工程大学 | Aircraft fuel oil DC power distribution unit (PDU) detecting system and detection method |
| CN107202964A (en) * | 2017-07-13 | 2017-09-26 | 郑州云海信息技术有限公司 | A kind of server automated power supply takes out load test system and method |
| CN113065197A (en) * | 2021-05-27 | 2021-07-02 | 一汽奔腾轿车有限公司 | Design method of visual wire harness power distribution model |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941110A (en) * | 2013-01-21 | 2014-07-23 | 重庆长安汽车股份有限公司 | Durability test device and test method for vehicle rotary connector |
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| CN106154154A (en) * | 2016-09-05 | 2016-11-23 | 郭金虎 | One key multiple-effect automobile fuse relay device for fast detecting |
| CN106885985A (en) * | 2017-02-28 | 2017-06-23 | 中国人民解放军空军工程大学 | Aircraft fuel oil DC power distribution unit (PDU) detecting system and detection method |
| CN106885985B (en) * | 2017-02-28 | 2019-03-26 | 中国人民解放军空军工程大学 | Aircraft fuel oil DC power distribution unit (PDU) detection system and detection method |
| CN107202964A (en) * | 2017-07-13 | 2017-09-26 | 郑州云海信息技术有限公司 | A kind of server automated power supply takes out load test system and method |
| CN113065197A (en) * | 2021-05-27 | 2021-07-02 | 一汽奔腾轿车有限公司 | Design method of visual wire harness power distribution model |
| CN113065197B (en) * | 2021-05-27 | 2023-05-12 | 一汽奔腾轿车有限公司 | Design method of visual harness distribution model |
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| CN101937034B (en) | 2012-12-26 |
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