CN102681968B - Hot-plugging slot identification circuit - Google Patents
Hot-plugging slot identification circuit Download PDFInfo
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- CN102681968B CN102681968B CN201210165933.7A CN201210165933A CN102681968B CN 102681968 B CN102681968 B CN 102681968B CN 201210165933 A CN201210165933 A CN 201210165933A CN 102681968 B CN102681968 B CN 102681968B
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Abstract
The invention discloses a hot-plugging slot identification circuit which belongs to the technical field of hot plugging of back power supplies. The hot-plugging slot identification circuit is simple and convenient in hot plugging and high in reliability. According to the technical scheme of the hot-plugging slot identification circuit, a power supply hot-plugging management IC (integrated circuit), a slot signal detection circuit and a slot signal channel are arranged in a hot-plugging function module, a power supply detection port of the power supply hot-plugging management IC is connected with a power supply detection signal port of a CPU (central processing unit) of the hot-plugging function module, the output end of the slot signal channel is connected with the slot signal detection circuit in series and then is connected with a slot signal reading port of the CPU, the detection control end of the CPU is connected with a control port of the slot signal detection circuit, and the channel control end of the CPU is connected with a control port of the slot signal channel. The hot-plugging slot identification circuit is widely applied to the communication field.
Description
Technical field
The present invention hot-swappable slot identification circuit, belongs to backboard Power Supply Hot Swap technical field.
Background technology
Along with the fast development of informationization technology, and the arrival in Internet of Things epoch, the function needing communication system to realize gets more and more, therefore, in order to adapt to market fast development, the advantage that the design of backboard type embodies is more and more obvious, and the one-tenth that this design facilitates customer devotion less was upgraded oneself equipment originally, also improved the competitive power of client simultaneously.
In the product of backboard type, main controller module carrys out transfer instruction by core bus and receives local function module information and come mutual by each functional module on expansion bus and expanded back panel, the communication system of this complexity, accurately assigning of instruction relies on the slot number of each functional module place slot to realize with the real-time monitoring of information, as can be seen here, obtaining correct slot number is the key point that whole system is normally run; Traditional slot identification signal be connected to there is different length contact pin hot plug connector on, when functional module inserts backboard groove, there is a level, first connect ground wire, eliminated the impact of electrostatic by ground wire to cabinet electric discharge, and then connection signal line, when extraction function module, also regular, first separation signal, more discretely.
Traditional hot plug slot identification circuit has the following disadvantages: one, slot identification signal is positioned on the shorter contact pin of hot plug connector, needing the state of maintenance level just can reach the object of hot plug protection when insertion and extraction function module, bringing inconvenience when operating to installation personnel; Two, traditional slot signal, need in backboard, add pull-up resistor has heat interchange to keep this mode of stabilization of level in the process of hot plug, and equipment plug in complex environment has potential safety hazard.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of plug simple and convenient, the hot plug slot identification circuit that reliability is high.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: hot-swappable slot identification circuit, Power Supply Hot Swap Management IC is provided with in warm connection function module, slot signal deteching circuit and slot signalling channel, the power detecting port of described Power Supply Hot Swap Management IC is connected with the power detection signal port of the CPU of warm connection function module, be connected with the slot signal-obtaining port of above-mentioned CPU after the output terminal serial connection slot signal deteching circuit of described slot signalling channel, the detection control end of described CPU is connected with the control port of slot signal deteching circuit, the path control terminal of CPU is connected with the control port of slot signalling channel,
The power end of described Power Supply Hot Swap Management IC is all connected with the contact pin of warm connection function module with the input end of slot signalling channel, the power end of Power Supply Hot Swap Management IC is connected with the power port of backboard by the contact pin of warm connection function module, and the input end of slot signalling channel is connected with the slot circuit of backboard by the contact pin of warm connection function module.
Slot position connector in described warm connection function module is the ordinary connector of isometric contact pin, the power supply of warm connection function module is provided by backboard power bus, the positive and negative electrode input terminal of power supply lays respectively at the both sides of slot position connector, the input terminal of slot identification signal is positioned at the middle part of slot, and slot signal wire does not establish pull-up resistor.
The method of described warm connection function module hot plug follows these steps to carry out:
The first step, warm connection function module is inserted in backboard, Power Supply Hot Swap Management IC is connected with the power port of backboard by the contact pin of warm connection function module, and the input end of slot signalling channel is connected with the slot circuit of backboard by the contact pin of warm connection function module, then enters second step;
Second step, whether the power supply that CPU detects Power Supply Hot Swap Management IC normally inputs, if CPU detects that the power supply of Power Supply Hot Swap Management IC normally inputs, then enters the 3rd step;
3rd step, CPU controls slot signal deteching circuit and slot signalling channel is opened, CPU reads slot signal by slot signal deteching circuit and slot signalling channel, and after CPU successfully reads slot signal, CPU controls slot signal deteching circuit and slot signalling channel is closed.
The beneficial effect that the present invention compared with prior art has is: the present invention is the hot plug slot identification circuit based on Power Supply Hot Swap Management IC, and system reliability is high; In the present invention, functional module slot position connector adopts the ordinary connector of isometric contact pin, and cost is low, and when hot-swappable functional module, operation is easier; In the present invention, the positive pole of system power supply and negative pole lay respectively at the both sides of connector, and after can guaranteeing that connector fully contacts, slot identification circuit works again, and reliability is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
Fig. 1 is electrical block diagram of the present invention;
In figure: 1 be warm connection function module, 2 be Power Supply Hot Swap Management IC, 3 be slot signal deteching circuit, 4 be slot signalling channel, 5 be CPU, 6 for backboard.
Embodiment
As shown in Figure 1, the present invention hot-swappable slot identification circuit, Power Supply Hot Swap Management IC 2 is provided with in warm connection function module 1, slot signal deteching circuit 3 and slot signalling channel 4, the power detecting port of described Power Supply Hot Swap Management IC 2 is connected with the power detection signal port of the CPU5 of warm connection function module 1, be connected with the slot signal-obtaining port of above-mentioned CPU5 after the output terminal serial connection slot signal deteching circuit 3 of described slot signalling channel 4, the detection control end of described CPU5 is connected with the control port of slot signal deteching circuit 3, the path control terminal of CPU5 is connected with the control port of slot signalling channel 4.
The power end of described Power Supply Hot Swap Management IC 2 is all connected with the contact pin of warm connection function module 1 with the input end of slot signalling channel 4, the power end of Power Supply Hot Swap Management IC 2 can be connected with the power port of backboard 6 by the contact pin of warm connection function module 1, the input end of slot signalling channel 4 can be connected with the slot circuit of backboard 6 by the contact pin of warm connection function module 1, the slot position connector of described warm connection function module 1 can adopt the ordinary connector of isometric contact pin, cost is low, simple and convenient when hot plug operations.
Slot position connector in described warm connection function module 1 is the ordinary connector of isometric contact pin, the power supply of warm connection function module 1 is provided by backboard 6 power bus, the positive and negative electrode input terminal of power supply lays respectively at the both sides of slot position connector, the input terminal of slot identification signal is positioned at the middle part of slot, and slot signal wire does not establish pull-up resistor.
The method of described warm connection function module 1 hot plug follows these steps to carry out:
The first step, warm connection function module 1 is inserted in backboard 6, Power Supply Hot Swap Management IC 2 is connected with the power port of backboard 6 by the contact pin of warm connection function module 1, the input end of slot signalling channel 4 is connected with the slot circuit of backboard 6 by the contact pin of warm connection function module 1, then enters second step;
Second step, whether the power supply that CPU5 detects Power Supply Hot Swap Management IC 2 normally inputs, if CPU5 detects that the power supply of Power Supply Hot Swap Management IC 2 normally inputs, then enters the 3rd step;
3rd step, CPU5 controls slot signal deteching circuit 3 and slot signalling channel 4 is opened, CPU5 reads slot signal by slot signal deteching circuit 3 and slot signalling channel 4, and after CPU5 successfully reads slot signal, CPU5 controls slot signal deteching circuit 3 and slot signalling channel 4 is closed.
The present invention is when warm connection function module 1 inserts backboard 6, first after the CPU5 of warm connection function module 1 detects that the power supply of Power Supply Hot Swap Management IC 2 normally exports, the input channel of slot identification circuit is opened again by CPU5, after CPU5 successfully reads slot signal, again the input channel of slot identification circuit is closed, thus play effective hot plug protective effect, the present invention is based on Power Supply Hot Swap Management IC 2, system reliability is higher; The power supply of warm connection function module 1 is provided by backboard 6 power bus, wherein the positive and negative electrode input terminal of power supply lays respectively at the both sides of connector, the input terminal of slot identification signal is positioned at the middle part of slot, slot signal wire does not establish pull-up resistor, the positive pole of system power supply and negative pole lay respectively at the both sides of connector, after can guaranteeing that connector fully contacts, slot identification circuit works again.
Above-mentioned Power Supply Hot Swap Management IC 2 adopts model to be the Power Supply Hot Swap Management IC of TPS2491 or TPS2490, above-mentioned slot signal deteching circuit 3 adopts model to be the slot signal deteching circuit of SN74HC165, and described slot signalling channel 4 adopts model to be the slot signalling channel of SN74LS245.
Claims (2)
1. hot-swappable slot identification circuit, it is characterized in that: in warm connection function module (1), be provided with Power Supply Hot Swap Management IC (2), slot signal deteching circuit (3) and slot signalling channel (4), the described power detecting port of Power Supply Hot Swap Management IC (2) and the CPU(5 of warm connection function module (1)) power detection signal port be connected, described slot signalling channel (4) output terminal serial connection slot signal deteching circuit (3) afterwards with above-mentioned CPU(5) slot signal-obtaining port be connected, described CPU(5) detection control end be connected with the control port of slot signal deteching circuit (3), CPU(5) path control terminal is connected with the control port of slot signalling channel (4),
The power end of described Power Supply Hot Swap Management IC (2) is all connected with the contact pin of warm connection function module (1) with the input end of slot signalling channel (4), the power end of Power Supply Hot Swap Management IC (2) can be connected with the power port of backboard (6) by the contact pin of warm connection function module (1), and the input end of slot signalling channel (4) can be connected with the slot circuit of backboard (6) by the contact pin of warm connection function module (1);
Slot position connector in described warm connection function module (1) is the ordinary connector of isometric contact pin, the power supply of warm connection function module (1) is provided by backboard (6) power bus, the positive and negative electrode input terminal of power supply lays respectively at the both sides of slot position connector, the input terminal of slot identification signal is positioned at the middle part of slot, and slot signal wire does not establish pull-up resistor.
2. hot-swappable slot according to claim 1 identification circuit, is characterized in that: the method for described warm connection function module (1) hot plug follows these steps to carry out:
The first step, warm connection function module (1) is inserted in backboard (6), Power Supply Hot Swap Management IC (2) is connected with the power port of backboard (6) by the contact pin of warm connection function module (1), the input end of slot signalling channel (4) is connected with the slot circuit of backboard (6) by the contact pin of warm connection function module (1), then enters second step;
Second step, CPU(5) whether the power supply that detects Power Supply Hot Swap Management IC (2) normally input, if CPU(5) detect that the power supply of Power Supply Hot Swap Management IC (2) normally inputs, then enter the 3rd step;
3rd step, CPU(5) control slot signal deteching circuit (3) and slot signalling channel (4) are opened, CPU(5) slot signal is read by slot signal deteching circuit (3) and slot signalling channel (4), as CPU(5) successfully read slot signal after, CPU(5) control slot signal deteching circuit (3) and slot signalling channel (4) closedown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165933.7A CN102681968B (en) | 2012-05-25 | 2012-05-25 | Hot-plugging slot identification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165933.7A CN102681968B (en) | 2012-05-25 | 2012-05-25 | Hot-plugging slot identification circuit |
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| CN102681968A CN102681968A (en) | 2012-09-19 |
| CN102681968B true CN102681968B (en) | 2015-03-18 |
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| CN201210165933.7A Active CN102681968B (en) | 2012-05-25 | 2012-05-25 | Hot-plugging slot identification circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777786B (en) * | 2015-03-20 | 2018-01-19 | 深圳市科陆电子科技股份有限公司 | Hot plug recognition methods and system |
| CN105955911B (en) * | 2016-05-09 | 2023-06-02 | 杭州宏杉科技股份有限公司 | Hot plug control circuit and control method thereof |
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| CN101782884A (en) * | 2009-12-25 | 2010-07-21 | 福建星网锐捷网络有限公司 | Hot plugging realization method and system of high-speed signal circuit and hot plugging circuit board card |
| CN101788844A (en) * | 2009-01-23 | 2010-07-28 | 瑞昱半导体股份有限公司 | Device and method for saving electricity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI220714B (en) * | 2002-01-10 | 2004-09-01 | Accton Technology Corp | Method of hot swap |
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- 2012-05-25 CN CN201210165933.7A patent/CN102681968B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101097534A (en) * | 2006-06-27 | 2008-01-02 | 中兴通讯股份有限公司 | Method and system for realizing recognizing and detecting plate type of single plate |
| CN201126532Y (en) * | 2007-12-14 | 2008-10-01 | 福建星网锐捷网络有限公司 | Heat insertion electrifying system |
| CN101727080A (en) * | 2008-10-31 | 2010-06-09 | 华为技术有限公司 | Method, device and system for power input control |
| CN101567810A (en) * | 2008-11-11 | 2009-10-28 | 武汉虹信通信技术有限责任公司 | Method for realizing self-detection of hot-plug board card |
| CN101788844A (en) * | 2009-01-23 | 2010-07-28 | 瑞昱半导体股份有限公司 | Device and method for saving electricity |
| CN101727430A (en) * | 2009-11-11 | 2010-06-09 | 中兴通讯股份有限公司 | Method and device for hot plug of card |
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| CN102681968A (en) | 2012-09-19 |
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Address after: 101102 Tongzhou District Zhongguancun science and Technology Park, Tongzhou Park light and electrical integration industrial base, government road, room 2, No. 212, room Patentee after: ROCKONTROL TECHNOLOGY GROUP CO.,LTD. Address before: 101102 Tongzhou District Zhongguancun science and Technology Park, Tongzhou Park light and electrical integration industrial base, government road, room 2, No. 212, room Patentee before: BEIJING ROCKONTROL INFORMATION TECHNOLOGY CO.,LTD. Address after: 101102 Tongzhou District Zhongguancun science and Technology Park, Tongzhou Park light and electrical integration industrial base, government road, room 2, No. 212, room Patentee after: BEIJING ROCKONTROL INFORMATION TECHNOLOGY CO.,LTD. Address before: 101102 Tongzhou District Zhongguancun science and Technology Park, Tongzhou Park light and electrical integration industrial base, government road, room 2, No. 212, room Patentee before: Beijing rockontrol Information Technology Co.,Ltd. |
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Address after: 101102 Tongzhou District Zhongguancun science and Technology Park, Tongzhou Park light and electrical integration industrial base, government road, room 2, No. 212, room Patentee after: Beijing rockontrol Information Technology Co.,Ltd. Address before: High tech Zone Shanxi city Taiyuan province Jiahua street 030032 No. 8 Patentee before: Shanxi Lianhua Weiye Technology Co.,Ltd. |