CN204215171U - A kind of anti-tampering type control circuit for launching control equipment - Google Patents
A kind of anti-tampering type control circuit for launching control equipment Download PDFInfo
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- CN204215171U CN204215171U CN201420583969.1U CN201420583969U CN204215171U CN 204215171 U CN204215171 U CN 204215171U CN 201420583969 U CN201420583969 U CN 201420583969U CN 204215171 U CN204215171 U CN 204215171U
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- voltage signal
- gnd
- control circuit
- signal
- control equipment
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Abstract
For an anti-tampering type control circuit for launching control equipment, power supply signal comprises V
1and V
1gND, V
2and V
2gND; This control circuit comprises electromagnetic relay K
1with current-limiting resistance R; Electromagnetic relay K
1there is line bag B
1, normally closed contact K
1-1, normally opened contact K
1-2with common port COM
1, K
1-1and K
1-2share same common port COM
1; V
2with line bag B
1positive input terminal connect, V
2gND and line bag B
1negative input end connect; Current-limiting resistance R one end and V
1gND connects, the other end and K
1-1connect; K
1-2with V
1connect; Common port COM
1be connected to 1 point of launching control equipment external interface.If control signal is required, then at V
2and V
2the input of effective power supply is accessed between GND; If control signal is not required, then at V
2and V
2the separated effective power supply input of GND.
Description
Technical field
The utility model belongs to emission control technical field, is specifically related to a kind of anti-tampering type control circuit for launching control equipment.
Background technology
In emission control field, some controlled plant needs launching control system to provide instantaneous effective control signal for it, for it as trigger condition, performs some corresponding actions.Generally, launching control equipment be application one group relay contact (or switch) as performer, by this device of momentary connection, for controlled plant provides effective control signal.
In the technical literature " test of missile launching control system " that Yuhang Publishing House announces, mention: press " launching main order " button to " launching main order " circuit basic composition principles illustrated, relay K 1 works and self-insurance, and its normally opened contact and power supply buses+M connect.
Although more design method demonstrates certain feasibility through model test, there is following problem:
The On current little (only hundreds of milliampere) of relay line bag, but line bag can be similar to a large inductance, disconnects immediately after its momentary connection, can wrap store more magnetic field energy at its line.Especially in the moment of power-off, back-emf even can go up hectovolt up to tens volts.In addition, launching control equipment other components and parts inner also can discharge certain interference in the course of the work.Because control signal wire is in floating state when not transfer control signal, therefore undesired signal is easy to the corresponding port scurrying into controlled plant by control signal wire, causes equipment malfunction to do, thus controlled plant cannot normally be worked.Therefore, the anti-tampering type control circuit adapting to following control techniques development need be furtherd investigate.
Summary of the invention
In view of this, the utility model proposes a kind of anti-tampering type control circuit for launching control equipment, this circuit can make launching control equipment accurately, send control signal to controlled plant reliably, and prevents undesired signal from scurrying into controlled plant, causes its misoperation.
For achieving the above object, the technical solution of the utility model is: this control circuit comprises an electromagnetic relay K
1, a current-limiting resistance R.
Electromagnetic relay K
1there is line bag B
1, normally closed contact K
1-1, normally opened contact K
1-2with common port COM
1, normally closed contact K
1-1with normally opened contact K
1-2share same common port COM
1.
The power supply signal of this anti-tampering type control circuit has two groups, is respectively positive voltage signal V
1with negative voltage signal V
1gND, positive voltage signal V
2with negative voltage signal V
2gND; Positive voltage signal V
2with line bag B
1positive input terminal connect, negative voltage signal V
2gND and line bag B
1negative input end connect.
Current-limiting resistance R one end and negative voltage signal V
1gND connects, the other end and normally closed contact K
1-1connect.
Normally opened contact K
1-2with positive voltage signal V
1connect.
This control circuit is integrated in launching control equipment, common port COM
1be connected to 1 point of launching control equipment external interface.
Further, positive voltage signal V is kept
1with negative voltage signal V
1there is the input of effective power supply, to ask launching control equipment to send control signal, then at positive voltage signal V between GND
2with negative voltage signal V
2the input of effective power supply is accessed between GND; Control signal need not be sent, then at positive voltage signal V to ask launching control equipment
2with negative voltage signal V
2the separated effective power supply input of GND.
Beneficial effect:
(1), the anti-tampering type control circuit for launching control equipment provided by the utility model, the performer that controls as path of application electromagnetic relay, makes control signal connect negative voltage signal when not applying, instead of is in floating state.This circuit can make the undesired signal that signal wire may occur be eliminated, and the control signal passage avoided interference by floating is altered to controlled plant, causes controlled plant misoperation.
(2), the utility model application comprise often open, control device that the electromagnetic relay of normally closed contact change as signal condition, only carry out the State Transferring that one-level control just accurately can complete control signal, greatly save development resource.
Accompanying drawing explanation
Fig. 1 is the principle schematic of a kind of anti-tampering type control circuit for launching control equipment of the utility model.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, the anti-tampering type control circuit in the present embodiment, adopts positive voltage signal V
1with negative voltage signal V
1gND, positive voltage signal V
2with negative voltage signal V
2gND is that control circuit is powered; This control circuit comprises an electromagnetic relay K
1, a current-limiting resistance R.In the present embodiment, current-limiting resistance R selects the 1K/0.25W metalfilmresistor of 718 factories, and the JZC-078M of Guizhou Space Electric Co., Ltd selected by electromagnetic relay.
Electromagnetic relay K
1there is line bag B
1, normally closed contact K
1-1, normally opened contact K
1-2with common port COM
1, normally closed contact K
1-1with normally opened contact K
1-2share same common port COM
1.
The power supply signal of this anti-tampering type control circuit has two groups, is respectively positive voltage signal V
1with negative voltage signal V
1gND, positive voltage signal V
2with negative voltage signal V
2gND; Positive voltage signal V
2with line bag B
1positive input terminal connect, negative voltage signal V
2gND and line bag B
1negative input end connect.
Current-limiting resistance R one end and negative voltage signal V
1gND connects, the other end and normally closed contact K
1-1connect.
Normally opened contact K
1-2with positive voltage signal V
1connect.
Common port COM
1be connected to 1 point of launching control equipment external interface, launching control equipment externally transmits control signal by 1 of this external interface.
This control circuit can make the undesired signal that signal wire may occur be eliminated, and the control signal passage avoided interference by floating is altered to controlled plant, causes controlled plant misoperation.
The principle of work of this control circuit is: when not needing to control controlled plant, control signal and current-limiting resistance R and negative voltage signal V
igND connects, and by this circuit, the coupled flutter on signal wire can be carried out discharge, eliminate, by the external interface of launching control equipment, can not harass controlled plant.In the process, positive voltage signal V be remained
2with negative voltage signal V
2the input of effective power supply is not accessed, i.e. positive voltage signal V between GND
2with negative voltage signal V
2off state is always between GND.
When needs control controlled plant, at positive voltage signal V
2with negative voltage signal V
2the input of effective power supply is accessed, then electromagnetic relay K between GND
1line bag B
1obtain work electricity consumption, normally closed contact K
1-1disconnect, normally opened contact K
1-2closed, positive voltage signal V
1through closed normally opened contact K
1-2, launching control equipment external interface " 1 " point, deliver to controlled plant, perform effective pumping signal of corresponding actions for controlled plant provides.
When after the duration meeting pumping signal needed for controlled plant execution corresponding actions, disconnect positive voltage signal V
2with negative voltage signal V
2effective power supply input between GND, then electromagnetic relay K
1line bag B
1to lose the job electricity consumption.Electromagnetic relay K
1line bag B
1after power-off, contact restPoses, i.e. normally opened contact K
1-2disconnect, normally closed contact K
1-1closed, external control signal reverts to original state, namely through current-limiting resistance R and negative voltage signal V
igND connects, and guarantee when not needing to control controlled plant, this signal can not be in a kind of floating state, the undesired signal on signal wire can be carried out discharging, eliminating by this circuit.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. for an anti-tampering type control circuit for launching control equipment, it is characterized in that, this control circuit comprises an electromagnetic relay K
1, a current-limiting resistance R;
Described electromagnetic relay K
1there is line bag B
1, normally closed contact K
1-1, normally opened contact K
1-2with common port COM
1, described normally closed contact K
1-1with normally opened contact K
1-2share same common port COM
1;
The power supply signal of this anti-tampering type control circuit has two groups, is respectively positive voltage signal V
1with negative voltage signal V
1gND, positive voltage signal V
2with negative voltage signal V
2gND; Described positive voltage signal V
2with described line bag B
1positive input terminal connect, described negative voltage signal V
2gND and described line bag B
1negative input end connect;
Described current-limiting resistance R one end and described negative voltage signal V
1gND connects, the other end and described normally closed contact K
1-1connect;
Described normally opened contact K
1-2with described positive voltage signal V
1connect;
This control circuit is integrated in launching control equipment, described common port COM
1be connected to 1 point of launching control equipment external interface.
2. a kind of anti-tampering type control circuit for launching control equipment as claimed in claim 1, is characterized in that, keeps positive voltage signal V
1with negative voltage signal V
1there is between GND the input of effective power supply:
To ask launching control equipment to send control signal, then at positive voltage signal V
2with negative voltage signal V
2the input of effective power supply is accessed between GND;
Control signal need not be sent, then at positive voltage signal V to ask launching control equipment
2with negative voltage signal V
2the separated effective power supply input of GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583969.1U CN204215171U (en) | 2014-10-10 | 2014-10-10 | A kind of anti-tampering type control circuit for launching control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583969.1U CN204215171U (en) | 2014-10-10 | 2014-10-10 | A kind of anti-tampering type control circuit for launching control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215171U true CN204215171U (en) | 2015-03-18 |
Family
ID=52983828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420583969.1U Active CN204215171U (en) | 2014-10-10 | 2014-10-10 | A kind of anti-tampering type control circuit for launching control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204215171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104298142A (en) * | 2014-10-10 | 2015-01-21 | 中国航天科技集团公司第四研究院第四十一研究所 | Anti-interference control circuit for launch control equipment |
-
2014
- 2014-10-10 CN CN201420583969.1U patent/CN204215171U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104298142A (en) * | 2014-10-10 | 2015-01-21 | 中国航天科技集团公司第四研究院第四十一研究所 | Anti-interference control circuit for launch control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |