CN204013527U - For two redundant hot swapping devices of sight device output signal - Google Patents
For two redundant hot swapping devices of sight device output signal Download PDFInfo
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- CN204013527U CN204013527U CN201420312421.3U CN201420312421U CN204013527U CN 204013527 U CN204013527 U CN 204013527U CN 201420312421 U CN201420312421 U CN 201420312421U CN 204013527 U CN204013527 U CN 204013527U
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Abstract
The two redundant hot swapping devices for sight device output signal that the utility model provides, comprise PSD receiver and aiming symbol amplifier, and aiming symbol amplifier comprises difference output circuit, threshold values circuit and output switching circuit.PSD receiver is exported left and right two paths of signals, passes to respectively difference output circuit and threshold values circuit.The difference output voltage signal of difference output circuit is passed to output switching circuit.Sight device is provided with two of the machine and slaves, and slave difference output voltage signal inputs to the output switching circuit of the machine, and the output switching circuit of the machine switches localpower voltage signal and slave power supply voltage signal exports the aiming ammeter signal of sight device.Its advantage is: realized two complete equipments and worked simultaneously, backuped each other, in the time of hostdown or power-fail, slave signal still can effectively be exported, and guarantees to launch flow process and does not interrupt, and has reduced single point failure link, improves sight device reliability and fail safe.
Description
Technical field
The utility model relates to control device, particularly a kind of two redundant hot swapping devices for sight device output signal.
Background technology
Aiming symbol is the key signal that ensures rocket initial orientation precision, and aiming symbol is used to indicate control system the normal direction of rocket upper mounting plate prism is adjusted on directive, makes the rocket direction of taking off in accurately before transmitting.
Aiming symbol sends control system by sighting system and receives, and aims at backup output simultaneously improve system reliability by two complete equipments.In use local signal is exported slave signal by commutation circuit, and when the machine fault cannot be exported aiming symbol, slave is responsible for, by aiming symbol output, can not affecting whole transmitting flow process.But in the time of slave generation power failure, commutation circuit cannot be worked, and aiming symbol cannot be exported, and causes the single point failure link of sight device, safety and reliability reduces.
Utility model content
The purpose of this utility model is exactly the above-mentioned defect that will overcome prior art, provides one can reduce single point failure link, improves the two redundant hot swapping devices for sight device output signal of sight device reliability and fail safe.
For achieving the above object, the two redundant hot swapping devices for sight device output signal that the utility model provides, wherein sight device comprises PSD receiver, described sight device also comprises aiming symbol amplifier, described aiming symbol amplifier comprises difference output circuit, threshold values circuit and output switching circuit, described PSD receiver is connected respectively with threshold values circuit with described difference output circuit, described difference output circuit is connected with described output switching circuit respectively with threshold values circuit, wherein: described PSD receiver output is left, right two paths of signals, pass to respectively described difference output circuit and threshold values circuit simultaneously, the difference output voltage signal of described difference output circuit is passed to described output switching circuit, described threshold values circuit outputs control signals to described output switching circuit, described sight device is provided with two of the machine and slaves, slave difference output voltage signal inputs to the described output switching circuit of the machine, and the described output switching circuit of the machine switches the aiming ammeter signal of localpower voltage signal and slave power supply voltage signal output sight device.
The utility model is for two redundant hot swapping devices of sight device output signal, wherein said output switching circuit is provided with transfer relay, normally opened contact output the machine difference output voltage signal of described transfer relay, the normally-closed contact output slave difference output voltage signal of described transfer relay.
The utility model, for two redundant hot swapping devices of sight device output signal, is connected with Transient Suppression Diode between wherein said difference output circuit output and ground wire.
The utility model is for advantage and the good effect of two redundant hot swapping devices of sight device output signal: owing to being provided with difference output circuit, threshold values circuit and output switching circuit, realized two complete equipments works simultaneously, backup each other, in the time of hostdown or power-fail, slave signal still can effectively be exported, guaranteeing to launch flow process does not interrupt, reduce single point failure link, improved sight device reliability and fail safe.
Further, increase the abnormal protective circuits of disturbing such as high voltage transient suppression, ensured to aim at the fail safe of output signal and external interface.
Describe the technical scheme of the two redundant hot swapping devices for sight device output signal that the utility model provides in detail below in conjunction with embodiment.
Brief description of the drawings
Fig. 1 is the block diagram of the utility model for two redundant hot swapping devices of sight device output signal;
Fig. 2 is the electrical schematic diagram of difference output circuit;
Fig. 3 is the electrical schematic diagram of threshold values circuit;
Fig. 4 is the electrical schematic diagram of output switching circuit.
Embodiment
With reference to Fig. 1, the two redundant hot swapping devices for sight device output signal that the utility model provides, comprise PSD receiver and aiming symbol amplifier, and aiming symbol amplifier comprises difference output circuit, threshold values circuit and output switching circuit.PSD receiver is connected respectively with threshold values circuit with difference output circuit, and difference output circuit is connected with output switching circuit respectively with threshold values circuit.Wherein:
PSD receiver is exported left and right two paths of signals, passes to respectively difference output circuit and threshold values circuit simultaneously.
In conjunction with reference to Fig. 2, difference output circuit, by the difference output voltage signal of more left and right two paths of signals, is passed to output switching circuit and waits for output.Two redundant hot swapping devices at the utility model for sight device output signal, are connected with Transient Suppression Diode V50 between difference output circuit output and ground wire, abnormal pressure signal is released by ground wire.
In conjunction with reference to Fig. 3, the comparable chip of threshold values circuit is determined threshold values comparative voltage scope, and left and right two paths of signals is carried out to read group total, just outputs control signals to output switching circuit, with the interference of filtering clutter signal in the time reaching certain magnitude with value.
In conjunction with reference to Fig. 4, sight device is provided with two of the machine and slaves, slave difference output voltage signal inputs to the output switching circuit of the machine, and the output switching circuit of the machine switches the aiming ammeter signal of localpower voltage signal and slave power supply voltage signal output sight device.For this reason, the output switching circuit of the machine is provided with transfer relay K1, normally opened contact output the machine difference output voltage signal of transfer relay K1, the normally-closed contact output slave difference output voltage signal of transfer relay K1.
The following describes the course of work of the utility model for two redundant hot swapping devices of sight device output signal.
Sight device adopts mode obliquely to aim at rocket, two sight devices is set and aims in order to realize two cover sight devices simultaneously, and foreground equipment is the machine, and background devices is slave.Outer is that direct current ± 12V and direct current+5V voltage are circuit supply for alternating current 220V voltage transitions.
Sight device adopts PSD as receiving device.PSD output signal divides left and right two-way to pass to sight device, and voltage signal scope is-10V～+ 10V, is output as 0V in the time that sight device collimates, and exports 0V～-10V in the time that back light is to the left, exports 0V～+ 10V in the time that back light is to the right.
Output switching circuit carries out Hot Spare switching as aiming at the output of ammeter signal using localpower voltage signal and slave power supply voltage signal.Main frame output under normal circumstances, when hostdown, slave is exported by main frame normally-closed contact, thereby realizes the signal output under unit malfunction, and output relation sees the following form.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection range of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (3)
1. the two redundant hot swapping devices for sight device output signal, wherein sight device comprises PSD receiver, it is characterized in that: described sight device also comprises aiming symbol amplifier, described aiming symbol amplifier comprises difference output circuit, threshold values circuit and output switching circuit, described PSD receiver is connected respectively with threshold values circuit with described difference output circuit, described difference output circuit is connected with described output switching circuit respectively with threshold values circuit, wherein: described PSD receiver output is left, right two paths of signals, pass to respectively described difference output circuit and threshold values circuit simultaneously, the difference output voltage signal of described difference output circuit is passed to described output switching circuit, described threshold values circuit outputs control signals to described output switching circuit, described sight device is provided with two of the machine and slaves, slave difference output voltage signal inputs to the described output switching circuit of the machine, and the described output switching circuit of the machine switches the aiming ammeter signal of localpower voltage signal and slave power supply voltage signal output sight device.
2. the two redundant hot swapping devices for sight device output signal according to claim 1, it is characterized in that: wherein said output switching circuit is provided with transfer relay (K1), normally opened contact output the machine difference output voltage signal of described transfer relay (K1), the normally-closed contact output slave difference output voltage signal of described transfer relay (K1).
3. the two redundant hot swapping devices for sight device output signal according to claim 1 and 2, is characterized in that: between wherein said difference output circuit output and ground wire, be connected with Transient Suppression Diode (V50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312421.3U CN204013527U (en) | 2014-06-12 | 2014-06-12 | For two redundant hot swapping devices of sight device output signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312421.3U CN204013527U (en) | 2014-06-12 | 2014-06-12 | For two redundant hot swapping devices of sight device output signal |
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| Publication Number | Publication Date |
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| CN204013527U true CN204013527U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420312421.3U Active CN204013527U (en) | 2014-06-12 | 2014-06-12 | For two redundant hot swapping devices of sight device output signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199993A (en) * | 2016-07-14 | 2016-12-07 | 北京航天发射技术研究所 | A kind of improve the sight device optical system to inclined target prism adaptation |
-
2014
- 2014-06-12 CN CN201420312421.3U patent/CN204013527U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199993A (en) * | 2016-07-14 | 2016-12-07 | 北京航天发射技术研究所 | A kind of improve the sight device optical system to inclined target prism adaptation |
| CN106199993B (en) * | 2016-07-14 | 2019-03-08 | 北京航天发射技术研究所 | A kind of sight device that improves is to the optical system of inclined target prism adaptation |
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