CN203444330U - Wireless distributed power source aging test monitoring system - Google Patents
Wireless distributed power source aging test monitoring system Download PDFInfo
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- CN203444330U CN203444330U CN201320436792.8U CN201320436792U CN203444330U CN 203444330 U CN203444330 U CN 203444330U CN 201320436792 U CN201320436792 U CN 201320436792U CN 203444330 U CN203444330 U CN 203444330U
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Abstract
The utility model discloses a wireless distributed power source aging test monitoring system. The system comprises a main board and at least one auxiliary board used for being connected with aging vehicles, and the main board is connected with the auxiliary board in a communication mode. The auxiliary board comprises a microprocessor, a voltage collecting circuit, a temperature collecting circuit and a turn-off control circuit, and the voltage collecting circuit, the temperature collecting circuit and the turn-off control circuit are all connected with and controlled by the microprocessor. In the voltage collecting circuit of the auxiliary board, a plurality of signal input ends of a first multiplexer are connected with output voltage of multiple ways of test power sources of the aging vehicles respectively, the output end of the first multiplexer sequentially passes through an amplifying circuit and a first A/D convertor and is connected with an input port of the microprocessor, and the chip selection end and the channel gating end of the first multiplexer are connected with an output port of the microprocessor. According to the wireless distributed power source aging test monitoring system, multi-way voltage collecting and multi-way temperature collecting on the aging vehicles can be supported, and automated test on a plurality of switching power sources can be completed.
Description
Technical field
The utility model relates to a kind of wireless distributed power source aging test monitor system, particularly relates to the supervisory system of the aging vehicle of the switch power supply aging test that a kind of, test access large for data acquisition amount is many.
Background technology
Switching Power Supply all must be through burn-in test before dispatching from the factory, and burn-in test is by controlling the environment such as temperature, humidity, power supply operating provisions time under this environment, detects the temperature of voltage and the pull-up resistor of each testing power supply simultaneously.If it is abnormal that power supply voltage or temperature data in test process occur, test can not be passed through, and for the loop of need cutting off the electricity supply immediately that ensures safety; If not abnormal in the test duration, test passes, is completed cut-out testing power supply.
Conventionally power source aging test is all to complete on the aging vehicle in burn-in chamber, and burn-in chamber generally includes some aging vehicles, and an aging vehicle can be tested 100～200 power supplys simultaneously.At present, the automaticity of a lot of aging vehicles is also not high, needs manual detection test status, manual power-off etc., or because of system too complex price too expensive.Therefore, research and develop that a automaticity is high, the aging vehicle supervisory system of relative low price is significant.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of wireless distributed power source aging test monitor system, this wireless distributed power source aging test monitor system can be supported the collection of plurality of voltages and temperature on aging vehicle, completes the automatic test of a plurality of Switching Power Supplies.
The technical solution of utility model is as follows:
A power source aging test monitor system, comprises mainboard and at least one daughter board for being connected with the testing power supply of aging vehicle, mainboard and daughter board communication connection;
Described daughter board comprises microprocessor, voltage collection circuit, temperature collection circuit and switches off control circuit; Voltage collection circuit, temperature collection circuit and switching off control circuit is all connected with microprocessor;
In the voltage collection circuit of daughter board, a plurality of signal input parts of the first MUX connect respectively the output voltage of the multi-channel test power supply of aging vehicle; The output terminal of the first MUX is connected with the input port of microprocessor with the first A/D converter through amplifying circuit successively; The sheet choosing end of the first MUX is all connected with the output port of microprocessor with passage gating end.
Described amplifying circuit is the adjustable amplifying circuit of enlargement factor amplifying based on secondary, and its circuit structure is:
The positive input terminal of the first operational amplifier connects the output terminal of the first MUX through resistance R 1; The negative input end of the first operational amplifier is through resistance R 5 ground connection; The N of a second MUX input end is received respectively the output terminal of the first MUX through N resistance; N >=2, the output terminal of output termination first operational amplifier of the second MUX; The output port of the passage gating termination microprocessor of the second MUX, the output terminal of the first operational amplifier also connects the positive input terminal of the second operational amplifier by resistance R 3; The negative input end of the second operational amplifier is through resistance R 6 ground connection; Between the positive input terminal of the second operational amplifier and output terminal, cross-over connection has resistance R 4; The signal input part of output termination first A/D converter of the second operational amplifier.
Totally 8 of the first described MUX, are 16 and select 1 analogue selector, altogether access 128 road voltage signals, after the equal short circuit of output terminal of all the first MUX, join with the input end of amplifying circuit;
The second described MUX is 4 to select 1 analogue selector; N=4; The resistance connected from the second MUX input end is 4 different resistance resistance.[for changing amplifying circuit enlargement factor, corresponding prime enlargement factor is respectively 10 times, 5 times, 3 times, 1 times]
In the temperature collection circuit of daughter board, a plurality of signal input parts of the 3rd MUX connect respectively the output voltage of the multi way temperature sensor of aging vehicle; The output terminal of the 3rd MUX is connected with the input port of microprocessor with the second A/D converter through second amplifying circuit successively; The sheet choosing end of the 3rd MUX is all connected with the output port of microprocessor with passage gating end; The 3rd described MUX is 16 to select 1 analogue selector; The amplifying circuit of described second amplifying circuit for being formed by 2 operational amplifier cascades.
In the switching off control circuit of daughter board, the serial data input end SI of deserializer, shift control end RSCK write control end RCK with register and are all connected with the output port of microprocessor, and the M of a deserializer parallel output terminal connects respectively M output unit; M >=8; [deserializer is a plurality of, and a plurality of deserializers between two one group of cascade use]
Microprocessor also connects an output unit to control the general supply of aging vehicle by an independent output port;
The structure of each output unit is: the signal input part of output unit connects the b utmost point of PNP triode by electronics R169; The e utmost point of PNP triode connects positive source, and the c utmost point of PNP triode connects the negative pole of diode D1, the plus earth of diode D1; The coil of relay is in parallel with diode D1; Relay has 3 output contacts, and the first contact and the second contact form normally closed switch, and the first contact and the 3rd contact form normal open switch;
When output unit is connected with i output terminal of M parallel output terminal of deserializer, the first contact meets the i road power supply Vsi of aging vehicle; The second contact meets aging vehicle power supply Vs, the 3rd contact ground connection; I=1 ..., M;
When output unit is connected with the independent output port of microprocessor, the first contact meets aging vehicle power supply Vs; The second contact meets external power supply Vss, the 3rd contact ground connection.
Mainboard is connected by ZigBee module communication with daughter board.
Mainboard comprises MCU, ZigBee module and alarm module; ZigBee module is all connected with MCU with alarm module, and alarm module comprises 3 pilot lamp and hummer, mainboard and PC communication connection.
Method of testing corresponding to supervisory system is: the aging vehicle that adopts at least one daughter board monitoring respective amount; Daughter board is communicated by letter with mainboard by wireless communication module, and mainboard is provided with alarm module; Daughter board 1) by voltage collection circuit, gather the output voltage of a plurality of testing power supplies on aging vehicle, 2) by temperature collection circuit, gather the temperature on the pull-up resistor that on aging vehicle, a plurality of testing power supplies are corresponding, 3) by the power supply of each testing power supply of control that switches off control circuit.
In voltage collection circuit, by a plurality of the first MUX gating one road voltage signals that are controlled by microprocessor, through signal, amplify and A/D conversion is laggard enters microprocessor; Signal amplifies to be realized by the adjustable amplifying circuit of enlargement factor;
In current collection circuit, by a plurality of the 3rd MUX gating one road temperature signals that are controlled by microprocessor, through signal, amplify and A/D conversion is laggard enters microprocessor;
In the switching off control circuit of daughter board, microprocessor is controlled a plurality of output units based on relay and triode by deserializer, finally controls arbitrary road out-put supply access power supply VS or the deenergization VS of aging vehicle;
Whether the output unit of microprocessor described in also connecting one by an independent output port accesses external power supply VSS to control the general supply of aging vehicle.
Beneficial effect:
Wireless distributed power source aging test monitor system of the present utility model, adopts Distributed Design and communication, and this design favorable expandability, is easy to installation and maintenance.Adopt ports-Extending technology, improved single-chip I/O mouth service efficiency, saved system cost.Coupled system software, makes system management and simple and convenient.
Described ports-Extending technology, simulated data selector switch and bus driving circuits in daughter board voltage and temperature collection circuit, have been used, make a daughter board can gather 128 roads or more multivoltage and temperature parameter, in daughter board switches off control circuit, use serial-parallel conversion circuit, can independently control 128 roads or the more shutoff of multiple power supplies and the shutoff of general supply.
Daughter board is accepted mainboard by ZigBee wireless communication technology and is managed, and to reduce system line, facilitates setup and manage;
The utility model adopts modular design, communication, has that installation and maintenance are simple, automaticity high.
Accompanying drawing explanation
Fig. 1 is power source aging supervisory system Organization Chart;
Fig. 2 is daughter board system chart;
Fig. 3 is main board system block diagram;
Fig. 4 is daughter board voltage collection circuit;
Fig. 5 is daughter board temperature collection circuit;
Fig. 6 is that daughter board switches off control circuit;
Fig. 7 is daughter board communication module;
Fig. 8 is motherboard circuit.
Embodiment
Below with reference to the drawings and specific embodiments, the utility model is described in further details:
Embodiment 1:
As Fig. 1, system mainly comprises detection daughter board, mainboard and host computer, each detects the monitoring that daughter board is responsible for an aging vehicle, when power supply status change or regularly then daughter board corresponding information can be uploaded to mainboard, and can control carrying out the shutoff of relay.Mainboard is mainly responsible for and the communicating by letter of host computer, the management of daughter board, warning, the management of daughter board is mainly the setting of voltage, temperature, time threshold, what mainboard and sub-communication between plates were used is ZigBee radio communication, can greatly reduce system wiring, improves the extensibility of system.On host computer, the voltage of test and temperature threshold, test duration can be set, can check testing power supply state, software can be controlled the shutoff of each road testing power supply automatically simultaneously, and by logout in system journal.Be completed, automatic closing system primary power forms test report simultaneously.
Daughter board subsystem is as shown in Figure 2: be divided into voltage acquisition path, temperature acquisition path, turn-off control module, four parts of communication module.First voltage acquisition passes through multi-channel data selector and (specifically selects 16 to select one device.) path that select to need gathers, the use that also can save IO mouth is then input in MCU after bleeder circuit (while needing), amplifying circuit and A/D converter; Temperature acquisition path adopts NTC thermistor, has stronger antijamming capability; In shutoff control module, instruction is turn-offed in the output of employing serial mode, and the also change-over circuit that then wears long changes into 16 tunnels shutoff instructions control driving circuits, and last driving circuit drives the shutoff of relay; In communication module, MCU is by universal serial bus and ZigBee module communication, and ZigBee module is communicated by letter with mainboard by wireless transmission method again.Because system data amount is very large, therefore only have the data of the state change of testing power supply just can upload, communication module is only transmitted a small amount of state variation data and some steering orders.
Main board system block diagram is as shown in Figure 3: mainboard is furnished with ZigBee communication module and communicates by letter with daughter board, to carry out parameter setting and to receive power supply state changing information; Warning subsystem responsible is according to the light on and off of power state information control signal lamp; Finally adopt 232 buses and PC to communicate.
1, hardware circuit design
1.1 daughter board hardware circuit design
Daughter board main control chip adopts certain 51 kernel single-chip microcomputer, and it adopts 51 ripe kernels, has abundant IO mouth available (80), is applicable to very much this project application.12 ADC of in addition, also integrated 8 tunnels inputs, 2 tunnels are UART communication module independently.
Voltage acquisition path adopts 16 to select 1 simulated data selector switch CD4067, data selector selects by sheet and address bus is selected corresponding path, sheet choosing is controlled by single-chip microcomputer P4 mouth, address is controlled by a latch by P5 mouth, make the control signal of MCU be input to the address mouth of CD4067, to strengthen the stability that analogue selector is controlled simultaneously.Amplifying circuit adopts two stage amplifer mode, and first order enlargement factor is adjustable, second level rectified input voltage polarity.The enlargement factor of amplifying circuit can be passed through analogue selector regulating and controlling, enlargement factor is controlled by the P0.4 of single-chip microcomputer and P0.5 combination and is controlled, be divided into four shelves, corresponding enlargement factor is respectively 10 times, 5 times, 3 times, 1 times, it is inputted corresponding voltage and is respectively 3.5～5V, 9～12V, 18～24V, (voltage of inputting 3.5～5V amplifies 10 times to 48～53V after unified dividing potential drop, the voltage of input 9～12V amplifies 5 times after unified dividing potential drop, the voltage of input 18～24V amplifies 3 times after unified dividing potential drop, the voltage of input 48～53V amplifies 1 times after unified dividing potential drop).Voltage acquisition has designed 8 ，Mei roads, road 16 and has selected 1 simulated data selector switch can gather 16 road voltages, and every daughter board can be responsible for gathering 128 road voltages like this.Voltage collection circuit as shown in Figure 4.
Temperature acquisition path adopts thermistor, and as the RT1～RT127 in accompanying drawing 5, temperature measurement range is-30 ℃～125 ℃, has very strong antijamming capability, can adapt to the strongly disturbing working environment of Switching Power Supply.Temperature acquisition path selects 1 simulated data selector switch by 16 equally, and its control mode is identical with voltage acquisition, and sheet choosing is controlled by single-chip microcomputer P6 mouth, and address is controlled by P7 mouth, and address bus has adopted bus driver equally.Temperature path amplifying circuit adopts two stage amplifer mode equally, but enlargement factor is non-adjustable.Same every group of 16 passages of temperature acquisition, 8 groups of totally 128 paths.Temperature collection circuit as shown in Figure 5.
Turn-off to control and to have adopted serial-parallel conversion circuit, to control be one group on ，Yi 16 tunnels as shown in Figure 6 in the cascade method of attachment that has adopted string conversion chip 74LS595, totally 8 groups, only needs 3 groups of IO mouths can realize 128 tunnels and turn-off and control.In addition also have a road directly by single-chip microcomputer GPIO, to be controlled, this road is used for controlling aging vehicle general supply and turn-offs.Each testing power supply turn-offs to control and is controlled by single-chip microcomputer P1～P3 mouth, and whole aging vehicle shutoff controlled by P0.7.Turn-offing driving circuit adopts positive-negative-positive triode to drive.Switch off control circuit as shown in Figure 6.V in figure
0～V
127wei128 road testing power supply, V
sfor aging vehicle power supply, V
sSfor external power supply.
In communication module, ZigBee communication adopts ripe circuit module, and daughter board is by RS232 and ZigBee module communication.Therefore in daughter board, increase a slice level transferring chip MAX232 TTL/CMOS level is converted into RS232 level, as shown in Figure 7.The RX of the communication module of daughter board, TX and RX, the TX cross connection of ZigBee module can realize communicating by letter of single-chip microcomputer and ZigBee intermodule.
1.2 motherboard hardware circuit design
Mainboard main control chip is the same with daughter board, and mainboard is provided with two-way serial communication circuit ，Yi road and communicates by letter with PC with ZigBee module communication ，Yi road; In addition also have warning circuit, adopt red, yellow, and green LED lamp and a hummer as warning device.Motherboard circuit is as shown in Figure 8:
Daughter board and mainboard have adopted wireless distributed management design.Mainboard and daughter board have adopted principal and subordinate's design, and a mainboard can be managed 256 and detect daughter board, and every daughter board can be managed the burn-in test process monitoring of 128 road power supplys.Between mainboard and daughter board, adopt ZigBee wireless communication technology, can simplify system line, facilitate system setup and manage.System can realize by software setting the intelligent management of power source aging test monitoring.System software can arrange power source aging and test a series of power source aging test parameters such as required voltage detecting threshold value, monitoring temperature threshold value, burn-in test time; Simultaneity factor can also realize the functions such as power-off, fault demonstration under abnormal conditions; Finally can be after test completes auto-breaking, form the functions such as testing journal sheet.
Daughter board, by adopting a series of ports-Extending technology, can be managed the nearly burn-in test of 128 road power supplys by 18 cheap single-chip microcomputer and monitor.Power source aging monitoring content comprises: the collection of voltage, temperature signal, power remove are controlled, test parameter arranges etc.
Described ports-Extending technology, is characterized in that in voltage, temperature collection circuit, having adopted respectively 8 group 16 and selects 1 simulated data selector switch to carry out ports-Extending, as shown in accompanying drawing 4 and accompanying drawing 5.Microcontroller selects control end by controlling address bus and the sheet of data selector, can select voltage and the temperature acquisition signal of 128 road testing power supplies.Driving force in order to ensure driving address bus, is connected to bus driver chip between microprocessor controls port and address bus.
Described ports-Extending technology, is characterized in that the ports-Extending that adopts serial-parallel conversion circuit realization to switch off control circuit switching off control circuit.Serial-parallel conversion circuit is comprised of 8 bit strings conversion chip, and every two 8 bit strings conversion chip are cascaded into one group of 16 serial-parallel conversion circuit, and 8 groups of this electric circuit constitute Liao128 road independent current sources switch off control circuit, as shown in Figure 6.
Claims (7)
1. a wireless distributed power source aging test monitor system, is characterized in that, comprises mainboard and at least one daughter board for being connected with the testing power supply of aging vehicle, mainboard and daughter board communication connection;
Described daughter board comprises microprocessor, voltage collection circuit, temperature collection circuit and switches off control circuit; Voltage collection circuit, temperature collection circuit and switching off control circuit is all connected with microprocessor;
In the voltage collection circuit of daughter board, a plurality of signal input parts of the first MUX connect respectively the output voltage of the multi-channel test power supply of aging vehicle; The output terminal of the first MUX is connected with the input port of microprocessor with the first A/D converter through amplifying circuit successively; The sheet choosing end of the first MUX is all connected with the output port of microprocessor with passage gating end.
2. wireless distributed power source aging test monitor system according to claim 1, is characterized in that, described amplifying circuit is the adjustable amplifying circuit of enlargement factor amplifying based on secondary, and its circuit structure is:
The positive input terminal of the first operational amplifier connects the output terminal of the first MUX through resistance R 1; The negative input end of the first operational amplifier is through resistance R 5 ground connection; The N of a second MUX input end is received respectively the output terminal of the first MUX through N resistance; N >=2, the output terminal of output termination first operational amplifier of the second MUX; The output port of the passage gating termination microprocessor of the second MUX, the output terminal of the first operational amplifier also connects the positive input terminal of the second operational amplifier by resistance R 3; The negative input end of the second operational amplifier is through resistance R 6 ground connection; Between the positive input terminal of the second operational amplifier and output terminal, cross-over connection has resistance R 4; The signal input part of output termination first A/D converter of the second operational amplifier.
3. wireless distributed power source aging test monitor system according to claim 2, it is characterized in that, totally 8 of the first described MUX, be 16 and select 1 analogue selector, altogether access 128 road voltage signals, after the equal short circuit of output terminal of all the first MUX, join with the input end of amplifying circuit;
The second described MUX is 4 to select 1 analogue selector; N=4; The resistance connected from the second MUX input end is 4 different resistance resistance.
4. wireless distributed power source aging test monitor system according to claim 1, is characterized in that, in the temperature collection circuit of daughter board, a plurality of signal input parts of the 3rd MUX connect respectively the output voltage of the multi way temperature sensor of aging vehicle; The output terminal of the 3rd MUX is connected with the input port of microprocessor with the second A/D converter through second amplifying circuit successively; The sheet choosing end of the 3rd MUX is all connected with the output port of microprocessor with passage gating end; The 3rd described MUX is 16 to select 1 analogue selector; The amplifying circuit of described second amplifying circuit for being formed by 2 operational amplifier cascades.
5. wireless distributed power source aging test monitor system according to claim 1, it is characterized in that, in the switching off control circuit of daughter board, the serial data input end SI of deserializer, shift control end RSCK write control end RCK with register and are all connected with the output port of microprocessor, and the M of a deserializer parallel output terminal connects respectively M output unit; M >=8;
Microprocessor also connects an output unit to control the general supply of aging vehicle by an independent output port;
The structure of each output unit is: the signal input part of output unit connects the b utmost point of PNP triode by electronics R169; The e utmost point of PNP triode connects positive source, and the c utmost point of PNP triode connects the negative pole of diode D1, the plus earth of diode D1; The coil of relay is in parallel with diode D1; Relay has 3 output contacts, and the first contact and the second contact form normally closed switch, and the first contact and the 3rd contact form normal open switch;
When output unit is connected with i output terminal of M parallel output terminal of deserializer, the first contact meets the i road power supply Vsi of aging vehicle; The second contact meets aging vehicle power supply Vs, the 3rd contact ground connection; I=1 ..., M;
When output unit is connected with the independent output port of microprocessor, the first contact meets aging vehicle power supply Vs; The second contact meets external power supply Vss, the 3rd contact ground connection.
6. wireless distributed power source aging test monitor system according to claim 1, is characterized in that, mainboard is connected by ZigBee module communication with daughter board.
7. according to the wireless distributed power source aging test monitor system described in claim 1-6 any one, it is characterized in that, mainboard comprises MCU, ZigBee module and alarm module; ZigBee module is all connected with MCU with alarm module, and alarm module comprises 3 pilot lamp and hummer, mainboard and PC communication connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320436792.8U CN203444330U (en) | 2013-07-22 | 2013-07-22 | Wireless distributed power source aging test monitoring system |
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| CN201320436792.8U CN203444330U (en) | 2013-07-22 | 2013-07-22 | Wireless distributed power source aging test monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154184A (en) * | 2016-09-06 | 2016-11-23 | 东莞铭普光磁股份有限公司 | A kind of aging testing system of Switching Power Supply |
| CN106371034A (en) * | 2016-08-23 | 2017-02-01 | 四川莱福德科技有限公司 | Smart energy-conserving aging system for power supply product tests |
| CN109884940A (en) * | 2019-02-26 | 2019-06-14 | 长沙南道电子科技有限公司 | Ageing system |
-
2013
- 2013-07-22 CN CN201320436792.8U patent/CN203444330U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371034A (en) * | 2016-08-23 | 2017-02-01 | 四川莱福德科技有限公司 | Smart energy-conserving aging system for power supply product tests |
| CN106154184A (en) * | 2016-09-06 | 2016-11-23 | 东莞铭普光磁股份有限公司 | A kind of aging testing system of Switching Power Supply |
| CN109884940A (en) * | 2019-02-26 | 2019-06-14 | 长沙南道电子科技有限公司 | Ageing system |
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Address after: 412200 Hunan Province Economic Development Zone Liling City Hengmao science and Technology Park Patentee after: HUNAN FULLRIVER HIGH TECHNOLOGY Co.,Ltd. Address before: 412200 Hunan Province Economic Development Zone Liling City Hengmao science and Technology Park Patentee before: LILING HENGMAO ELECTRONICS TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20140219 |