CN211090089U - Light source control module of star simulator - Google Patents
Light source control module of star simulator Download PDFInfo
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- CN211090089U CN211090089U CN201921467397.XU CN201921467397U CN211090089U CN 211090089 U CN211090089 U CN 211090089U CN 201921467397 U CN201921467397 U CN 201921467397U CN 211090089 U CN211090089 U CN 211090089U
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Abstract
The utility model discloses be suitable for space flight ground optical test technical field, provide a light source control module of star simulator, this module includes light source installation module, constant current source drive module, pulse width modulation module, light source installation module the constant current source drive module the pulse width modulation module electricity is connected in proper order, light source installation module includes the light source installation circuit board of a plurality of independent light sources of mountable, the pulse width modulation square wave transmission that pulse modulation module output was controlled each light source gives drive module, with installing a plurality of light sources on the light source installation module carry out independent control.
Description
Technical Field
The utility model belongs to the technical field of space flight ground optical test, especially, relate to a star simulator's light source control module.
Background
With the improvement of the precision of the space navigation positioning and the requirement of the test items, the function of simulating the star point, the star and the like and related parameters of the conventional star simulator can not gradually meet the more accurate detection performance test of the space star sensor.
When the brightness of star points is changed by a light source of a traditional star simulator, a plurality of gears are changed under the condition that the brightness of all the star points is consistent, the brightness values of the star points at different positions cannot be changed, and the wide brightness adjusting range required by the real star and the like of the simulated star points and the color temperature value cannot be achieved. Therefore, currently, in the field of simulators, there is no light source control technology for a static star simulator capable of simultaneously satisfying a multi-star position, a multi-star, and the like and a spectrum type.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light source control module of star simulator aims at solving the technical problem that can't change the luminance value of different positions star points among the prior art.
In a first aspect, the utility model provides a star simulator's light source control module, include: the device comprises a light source installation module, a constant current source driving module and a pulse width modulation module, wherein the light source installation module, the constant current source driving module and the pulse width modulation module are electrically connected in sequence;
the pulse modulation module outputs pulse width modulation square waves for controlling each light source and transmits the pulse width modulation square waves to the driving module so as to independently control the plurality of light sources installed on the light source installation module.
Preferably, the light source mounting circuit board comprises a power supply mounting part, and the light source power supply mounting part is used for mounting the multicolor light source.
Preferably, the light source power supply installation part is used for installing a plurality of patch type multicolor light sources in a welding mode.
Preferably, the light source installation module further comprises a light source driving installation seat and a light source driving connection line, the light source driving installation seat is electrically connected with the constant current source driving module, and the light source driving installation seat is electrically connected with the light source installation circuit board through the light source driving connection line.
Preferably, the constant current source driving module comprises a constant current source driving circuit module, and the constant current source driving circuit module is used for integrating and processing a plurality of paths of voltage-stabilizing constant currents provided for each single multicolor light source and a switch circuit into a light source output module.
Preferably, the constant current source driving module comprises a constant current source driving circuit module, and the constant current source driving circuit module is used for integrating and processing a plurality of paths of voltage-stabilizing constant currents provided for each single multicolor light source and a switch circuit into a light source output module.
Preferably, the pulse width modulation module includes a main control chip circuit module and a communication circuit module, the main control chip circuit module is in communication connection with the communication circuit module, the communication circuit module is used for receiving an external communication signal instruction, and the main control chip circuit module is used for modulating and generating a corresponding pulse modulation square wave according to the communication signal instruction transmitted by the communication circuit module so as to control each light source.
Preferably, the constant current source driving module and the pulse width modulation module are electrically connected through the matching connection between the connector male head and the connector female head.
Preferably, an up-down laminated structure is adopted among the light source installation module, the constant current source driving module and the pulse width modulation module.
The utility model discloses a light source control module of star simulator after receiving the communication signal instruction that external equipment sent, generates the pulse width modulation square wave through the pulse width modulation module and sends constant current source drive module to the luminous state of each light source is driven in the drive signal of each light source single control, thereby realizes the single control of different positions star point luminance in the star simulator.
Drawings
Fig. 1 is a schematic front view of a light source control module X of a star simulator according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a back-side-oriented structure of a light source control module X of the star simulator according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a back-side-oriented structure of the constant current source driving module 101 in the light source control module X of the star simulator according to the first embodiment of the present invention;
fig. 4 is a block diagram illustrating a light source control module X of the star simulator according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating an implementation of a light source control method of the star simulator according to the second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is given to specific implementations of the present invention with reference to specific embodiments:
the first embodiment is as follows:
fig. 1 to 4 show a light source control module X of the star simulator provided in this embodiment. As shown in fig. 1, a light source control module X of the star simulator provided in this embodiment includes a light source installation module 100, a constant current source driving module 101, and a pulse width modulation module 102, where the light source installation module 100, the driving module 101, and the pulse width modulation module 102 are electrically connected in sequence, and the light source installation module 100 includes a light source installation circuit board 1 on which a plurality of independent light sources are installed;
the pulse modulation module 102 outputs pulse width modulation square waves for controlling each light source and transmits the pulse width modulation square waves to the constant current source driving module 101, so as to independently control a plurality of light sources mounted on the light source mounting circuit board 1.
Therefore, a communication signal instruction can be sent by external equipment, after the light source control module X receives the communication signal instruction sent by the external equipment, the pulse width modulation module 102 generates pulse width modulation square waves and transmits the pulse width modulation square waves to the constant current source driving module 101 so as to generate driving signals for independently controlling each light source and drive the light emitting state of each light source, and therefore independent control of the brightness of star points at different positions in the star simulator is achieved.
Light source installation module 100 still includes light source drive mount pad 3, light source drive connecting wire 2, light source drive mount pad 3 with constant current source drive module 101 electricity is connected, light source drive mount pad 3 passes through light source drive connecting wire 2 with light source installation circuit board 1 electricity is connected.
Specifically, light source installation circuit board 1 includes power supply installation department, light source power supply installation department is used for installing polychrome light source. For example, the light source power supply installation part can install a plurality of patch type multicolor light sources through welding, and can also install a plurality of patch type multicolor light sources through button type or sticking type.
Alternatively, the light source mounting module 100 may be a detachable light source mounting module. The surface of a light source installation circuit board 1 in a light source installation module 100 is provided with a surface-mounted type pad, a pin of a small-sized surface-mounted type multicolor light source can be welded on the pad in a surface-mounted machine or manual electric soldering iron welding mode to be fixedly connected, the surface-mounted type multicolor light source can be customized according to the size of the surface-mounted type light source as required, welding installation requirements of different surface-mounted type light sources are met, meanwhile, the back surface of the light source installation circuit board 1 can be directly connected to a light source driving connecting wire 2 through welding, each branch of the light source needs to be connected with two connecting wires to lead out the positive and negative poles of the branch of the light source, the other end of the led-out connecting wire is connected to a male connector of a.
Due to the installation mode of the separable light source, the light source can be conveniently replaced and isolated from the heating area of the constant current source driving circuit module, and meanwhile, the freedom degree of the movement of the light source can be improved.
The light source installation circuit board 1 is designed according to the size and the dimension of a used light source, simultaneously supports and places a multicolor multi-output light source, can install one end of a light source driving connecting line 2 while meeting the requirement of light source installation, can isolate a light source which is easily influenced by temperature, such as L ED type light source, from a driving circuit which can generate heat, simultaneously, the soft light source driving connecting line 2 can move in a plurality of degrees of freedom in a three-dimensional space by matching with the light source installation circuit board 1, and can be adapted to the requirements of space layout of different light source output port structural parts.
The female seat of light source drive mount pad 3 is fixed on the hole site that constant current source drive module 101 corresponds through the welding mode of formula of cuting straightly, is located the central authorities of light source output modular constant current source drive circuit module 4, and on the circuit board of the constant current source drive module 101 of high integration, constant current source drive circuit module 4 can possess a plurality of the same light source output module, just also can connect a plurality of detachable light source installation module 100, outputs multichannel light source. The female connector (5) on the back of the circuit board of the constant current source driving module 101 is correspondingly connected with the male connector (8) on the front of the circuit board of the pulse width modulation module 102, so that a control signal input path is established.
Optionally, the constant current source driving module 101 is only one mode of a driving module in a light source control module of the star simulator, and may also be a constant voltage source driving module, or may also be another type of driving module.
The constant current source driving module adopts voltage-stabilizing constant current output, can meet the stable voltage and current output of various light sources after the proportion of the feedback circuit resistor is changed, adopts the layout format of a high integration level pole, synthesizes the factors of space layout, circuit output precision and heat effect, and ensures the optimization of overall performance. And the voltage-stabilizing value and the constant current value in the constant current source driving module can be changed by changing the resistance ratio of the peripheral feedback circuit, so that the design input values of different light sources can be met, the flexibility of the light source control module is effectively improved to a greater extent, and meanwhile, the high output precision and the high stability are ensured by the constant current source driving design and the high-integration-level layout mode.
The constant current source driving module 101 includes a constant current source driving circuit module 4, and the constant current source driving circuit module 4 is of a modular design. The constant current source driving circuit module 4 is used for integrating and processing a plurality of paths of voltage-stabilizing constant currents provided for each single multicolor light source and a switch circuit into a light source output module.
After voltage-stabilizing constant current and switch circuit that can provide multichannel input for single polychrome multichannel controllable light source integrate and process into a light source output module, adopt the overall arrangement of 4 layers of PCB positive and negative altogether with the light source output module of a plurality of high integration levels again, and constitute constant current source drive module with female head 5 of connector (or the public head of connector), wherein the female head of connector is located the central authorities of module, the light source output module of high accuracy arranges respectively around the female head of connector, regard female head of connector as the medium, keep apart every high accuracy light source output module, whole constant current source drive module's high integration level has been kept simultaneously.
The pulse width modulation module 102 comprises a main control chip circuit module 7 and a communication circuit module 6, wherein the main control chip circuit module 7 is in communication connection with the communication circuit module 6, the communication circuit module 6 is used for receiving an external communication signal instruction, and the main control chip circuit module 7 is used for generating a corresponding pulse modulation square wave according to the communication signal instruction modulation transmitted by the communication circuit module 6 so as to control each light source.
Optionally, the constant current source driving module and the pulse width modulation module 102 are electrically connected through a matching connection between a connector male head and a connector female head.
The main control chip circuit module 7 adopts the design of the minimizing system, the output path number of the control square wave is calculated according to the number of the required multi-path light sources, and the adjustment range of the required light sources, thereby selecting a proper single chip microcomputer chip, the minimal system with high integration level is built around the single chip microcomputer chip, simultaneously, the pulse width modulation module is jointly formed by the communication circuit module 6 and the connector male head 8, the module can be communicated with an upper computer, the switching circuit in the constant current source driving module is controlled online, meanwhile, through reasonable configuration, the output of the pulse width modulation square wave with high frequency and multi-proportion duty ratio can be realized by the module, and the accurate and wide-range control of control signals is realized. The switch control mode is matched with the control of the light source power supply of the voltage-stabilizing constant current, so that the stability of the light source is high, and the light source brightness is greatly reduced under the influence of temperature due to the separated design of the light source and the heating area isolation of the constant current source control circuit, so that the stability is further improved.
The spectrum of the star point is synthesized by the colors of a plurality of spectrum sections in proportion, the colors of the adopted multi-color multi-path light source are independently controllable, and the proportion of the illuminance of each color component of the star point light source can be adjusted according to the proportion of the spectrum fitting design input by matching with the multi-path constant current source drive and the circuit input of the pulse width modulation module, so that the spectrum of the star point light source is changed.
Optionally, the front side of the pulse width modulation module 102 may be connected to the constant current source driving module 101, and the back side may be connected to a communication and power cable structure, so that the pulse width modulation module can be well installed in a cylindrical structure adapted to the star simulator, thereby better increasing the adaptability between the light source control module and the star simulator.
Optionally, an up-down laminated structure is adopted among the light source installation module 100, the constant current source driving module 101 and the pulse width modulation module 102, the front side can be connected with the separable light source installation module, the back side can be connected with the control module pulse width modulation module, and meanwhile, a modular design that a single module is independently controllable is adopted, so that each branch of each light source is independently controllable, and the output precision and stability are ensured under the condition of minimizing the volume.
A communication protocol is customized through the communication circuit module 6 and the upper computer control software, and meanwhile, an interface can be connected with a control interface of a computer through a communication cable, so that communication between the upper computer software and a lower computer program burnt in the main control chip circuit module 7 is established, a specified control action is completed, and pulse width modulation square waves with adjustable frequency and duty ratio are output.
Example two:
fig. 5 is a flowchart illustrating an implementation of a light source control method of the star simulator according to the second embodiment. The light source control method of the star simulator shown in the second embodiment is suitable for a light source control module of the star simulator, and a processor is arranged in the light source control module to control the light emitting state of a light source in the star simulator. For convenience of explanation, only the parts related to the embodiments of the present invention are shown, and detailed as follows:
and S110, the pulse width modulation module receives a communication signal instruction sent by the upper computer software through the communication circuit module and sends the communication signal instruction to the main control chip circuit module.
And step S120, modulating the communication signal instruction by the main control chip circuit module to generate a corresponding pulse modulation square wave.
And step S130, according to the pulse modulation square wave, the driving module generates corresponding driving signals to independently control a plurality of light sources arranged on the light source installation module.
The specific control method of the light source control module for the light source has been described in the first embodiment, and is not described herein again.
The whole light source control module realizes the function of adjusting the output of the light source on line, when the frequency of the pulse width modulation frequency output after receiving the command of the upper computer control signal is far higher than the acquisition frequency of the acquisition sensor, the light source observed macroscopically is actually in a normally bright state, and when the duty ratio of the square wave is higher, the light source is brighter; the lower the duty cycle, the darker the light source.
It should be noted that the external device can be an intelligent device such as a mobile phone and a computer, so that a user can easily and independently control each light source of the star simulator, the brightness values of star points at different positions in the star simulator can be effectively changed, and the precision and the flexibility of light source control in the star simulator are greatly improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A light source control module for a star simulator, the module comprising: the device comprises a light source installation module, a constant current source driving module and a pulse width modulation module, wherein the light source installation module, the constant current source driving module and the pulse width modulation module are electrically connected in sequence;
the pulse width modulation module outputs pulse width modulation square waves for controlling each light source and transmits the pulse width modulation square waves to the driving module so as to independently control the plurality of light sources installed on the light source installation module.
2. The light source control module of a star simulator of claim 1, wherein said light source mounting circuit board comprises a light source power mounting portion for mounting a multicolor light source.
3. The light source control module of a star simulator according to claim 2, wherein the light source power supply mounting portion mounts a plurality of patch type multicolor light sources by welding.
4. The light source control module of a star simulator according to claim 1, wherein the light source mounting module further comprises a light source driving mounting base and a light source driving connecting line, the light source driving mounting base is electrically connected to the constant current source driving module, and the light source driving mounting base is electrically connected to the light source mounting circuit board through the light source driving connecting line.
5. The light source control module of a star simulator according to claim 1, wherein the constant current source driving module comprises a constant current source driving circuit module, and the constant current source driving circuit module is used for integrating a plurality of voltage-stabilizing constant currents provided for each single multicolor light source and a switch circuit into a light source output module.
6. The light source control module of a star simulator according to claim 1, wherein the constant current source driving module comprises a constant current source driving circuit module, and the constant current source driving circuit module is used for integrating a plurality of voltage-stabilizing constant currents provided for each single multicolor light source and a switch circuit into a light source output module.
7. The light source control module of a star simulator according to claim 1, wherein the pulse width modulation module comprises a main control chip circuit module and a communication circuit module, the main control chip circuit module is in communication connection with the communication circuit module, the communication circuit module is used for receiving an external communication signal command, and the main control chip circuit module is used for modulating and generating a corresponding pulse modulation square wave according to the communication signal command transmitted by the communication circuit module so as to control each light source.
8. The light source control module of a star simulator according to claim 1, wherein the constant current source driving module and the pulse width modulation module are electrically connected by a male connector and a female connector.
9. The light source control module of a star simulator according to claim 1, wherein a top-bottom stacked structure is adopted among the light source installation module, the constant current source driving module and the pulse width modulation module.
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| CN201921467397.XU CN211090089U (en) | 2019-09-04 | 2019-09-04 | Light source control module of star simulator |
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| CN201921467397.XU CN211090089U (en) | 2019-09-04 | 2019-09-04 | Light source control module of star simulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519898A (en) * | 2019-09-04 | 2019-11-29 | 西安中科微星光电科技有限公司 | The light source control module and light source control method of star simulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519898A (en) * | 2019-09-04 | 2019-11-29 | 西安中科微星光电科技有限公司 | The light source control module and light source control method of star simulator |
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