CN113721495A - Control system and control method - Google Patents

Abstract

The invention relates to a control system and a control method, wherein the system comprises a control module (1), a signal detection module (2), a setting module (3) and a signal output module (4), wherein the control module (1) is connected with the control module (1) to sense external environment information and transmit the sensed information to the control module (1), the setting module (3) is connected with the control module (1) and provides first setting information corresponding to the current external environment state in a matching mode when the control module (1) judges that the current external environment is in a manned state or unmanned state according to the information transmitted by the signal detection module (2), and the signal output module (4) is connected with the control module (1) and adjusts the electric information to output corresponding electric signals after the control module (1) outputs the corresponding electric information according to the first setting information. The application has the advantages of simple structure, low cost and strong applicability.

Description

Control system and control method

Technical Field

The invention relates to the technical field of lamps, in particular to a control system and a control method.

Background

In view of the fact that the quality and the service life of precious objects such as cultural relics and jewelry are affected after being illuminated for a long time, the illumination is usually required to be performed with weak light when no audience or customers visit, so as to control the illumination amount, and when the audience or customers visit, enough light needs to be provided to meet the appreciation requirements.

The light intensity is realized by a dimmer, which is well known, but the dimmer can output different light intensity, and the signal instruction is also originated from the signal instruction given by the control system at the front end of the dimmer, namely, the control system gives different voltage output amplitude signals, and the dimmer outputs different percentages of voltage according to the signals, so as to realize different illuminations.

Most of the control systems on the market today, which have both lighting and illumination capacity, are very professional and large intelligent systems, such as DALI systems. The system has high investment cost, difficult system construction, very high later maintenance and service cost and low popularization rate.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a control system that has a simple structure, low cost, and is stable and reliable and has both illumination and light quantity.

The invention also aims to provide a corresponding control method.

In order to achieve the purpose, the technical scheme of the invention is as follows: a control system, characterized by: the system comprises a plurality of devices which are connected with each other,

a control module;

the signal detection module is connected with the control module to sense external environment information and transmit the sensed information to the control module;

the setting module is connected with the control module and provides first setting information matched and corresponding to the current external environment state when the control module judges that the current external environment is in the manned state or the unmanned state according to the information transmitted by the signal detection module;

and the signal output module is connected with the control module and used for adjusting the electric information to output a corresponding electric signal after the control module outputs the corresponding electric information according to the first setting information.

Furthermore, the system also comprises a delay module which is connected with the control module and provides second setting information, and the second setting information corresponds to the delay time when the external environment is changed from a manned state to an unmanned state and then brightness is switched.

Furthermore, the system also comprises a power supply module which respectively provides energy for the control module, the signal detection module, the setting module, the signal output module and the time delay module.

Furthermore, the setting module and the delay module both comprise potentiometers connected with the control module, and the first setting information and the second setting information are the current resistance values of the corresponding potentiometers respectively.

Further, the signal detection module comprises a detector and an isolation component connected between the detector and the control module to provide isolation;

the sensed information includes outputting a low level to the control module when the detector senses a person and outputting a high level to the control module when the detector senses no person.

Further, the isolation component is a diode, and the electrical signal is a voltage signal.

Furthermore, the signal output module comprises a filtering module connected with the control module to filter the electrical information, an amplifying module arranged at the rear end of the filtering module and a following driving module connected with the amplifying module;

the electrical information is a PWM duty cycle signal.

Further, the amplifying module comprises a first operational amplifier, and the follower driving module comprises a second operational amplifier.

A control method characterized by: the method comprises the following steps of,

s1, acquiring external environment information and judging whether the current external environment is in a manned state or an unmanned state;

and S2, acquiring the setting information corresponding to the current external environment state and outputting corresponding electrical information according to the setting information to provide a voltage signal.

Further, the S2 specifically includes,

s21, acquiring the resistance value of the potentiometer corresponding to the current external environment state, comparing the current external environment state with the external environment state acquired at the previous moment, and executing S22 if the current external environment state is consistent with the external environment state acquired at the previous moment, otherwise executing S23;

s22, outputting a PWM duty ratio signal corresponding to the currently acquired potentiometer resistance value and regulating PWM to output a corresponding voltage signal;

s23, if the current external environment state is changed from the unmanned state to the manned state, executing S22, otherwise, if the current external environment state is changed from the manned state to the unmanned state, executing S24;

s24, delaying m minutes, and executing S22.

Compared with the prior art, the invention has the advantages that: the external environment state is detected through the detector, the corresponding potentiometer resistance value is selected according to the external environment state, the PWM duty ratio signal corresponding to the resistance value is output according to the resistance value, and the control voltage signal is well given through filtering and operational amplification.

Drawings

FIG. 1 is a schematic diagram of a control module circuit in a preferred embodiment of the present application.

Fig. 2 is a schematic circuit diagram of a signal detection module in a preferred embodiment of the present application.

Fig. 3 is a schematic diagram of a setting module circuit in a preferred embodiment of the present application.

Fig. 4 is a schematic circuit diagram of a signal output module in a preferred embodiment of the present application.

Fig. 5 is a schematic circuit diagram of a signal delay module in a preferred embodiment of the present application.

Fig. 6 is a schematic circuit diagram of a power module in a preferred embodiment of the present application.

Fig. 7 is an overall structural block diagram of the preferred embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-7, which are schematic circuit diagrams of preferred embodiments of the present invention, as mentioned in the background, the present application is directed to provide a control system that can provide a corresponding control signal to control a back-end circuit to provide weak illumination when special illumination is not required, and provide a corresponding control signal to control the back-end circuit to provide strong illumination when special requirements are required.

As shown in fig. 7, the control system includes a control module 1, a signal detection module 2 connected to the control module 1 to sense external environment information and transmit the sensed information to the control module 1, a setting module 3 connected to the control module 1 and providing first setting information corresponding to a current external environment state when the control module 1 determines that the current external environment is a manned state or unmanned state according to information transmitted by the signal detection module 2, and a signal output module 4 connected to the control module 1 and adjusting the electrical information to output a corresponding electrical signal after the control module 1 outputs the corresponding electrical information according to the first setting information.

In this embodiment, the control module 1 adopts a single chip, and the electrical information is a PWM duty cycle signal. As described above, in practical use, when a customer or a spectator approaches a commodity such as a cultural relic or jewelry, it is necessary to provide sufficient illumination for viewing, and when no customer or a tourist approaches the commodity, it is necessary to reduce the illumination brightness in order to ensure the quality of the commodity.

The signal detection module 2 comprises a detector 21 and an isolation member 22 connected between the detector 21 and the control module 1 to provide isolation, as shown in fig. 2, wherein the isolation member 22 is a diode D1 in this application. In order to realize omnibearing information sensing, a plurality of detectors positioned at different directions are arranged in the system, interference exists among the detectors, and the existence of the diode D1 can effectively reduce the interference among the detectors, so that as long as one detector in the system detects information coming from people, a low-level signal is output to the control module 1, and the control module 1 generates corresponding operation.

Correspondingly, the sensed information includes two cases of outputting a low level to the control module 1 when the detector 21 senses that there is a person and outputting a high level to the control module 1 when the detector 21 senses that there is no person. Of course, it may also be that when sensing that someone outputs a high level to control module 1, and when sensing that nobody outputs a low level to control module 1, this all can design according to specific needs, and it is no longer repeated here.

The setting module 3 of the present application includes a potentiometer connected to the control module 1, and the first setting information is a current resistance value of the potentiometer. Specifically, in order to match with the external environment state and facilitate implementation and management, the potentiometer in this embodiment has two potentiometers, one of which provides one resistance value when the external environment is in the occupied state and the other provides another resistance value when the external environment is in the unoccupied state, as shown in fig. 3, VR-MAX is the resistor corresponding to the bright light illumination, VR-MIN is the resistor corresponding to the dim light illumination, and the first setting information includes the resistance value under the VR-MAX resistor and the resistance value under the VR-MIN resistor.

As can be seen from the foregoing description, in the present application, the resistance value of the potentiometer is associated with the external environment state, and according to the operation habit, the resistance value of the associated resistor is set when the external environment is in the manned state, the set corresponding electrical information is output to the control module 1 through the VR-MAX, and the corresponding result is that the resistance value determines that the size range of the electrical information PWM output by the control module 1 in the current state is generally 51% to 100%, and the larger the resistance value is, the larger the output PWM duty ratio is.

Meanwhile, the resistance value of the associated resistor is also set when the external environment is in an unmanned state, the set corresponding electrical information is output to the control module 1 through the VR-MIN, and the corresponding result is that the resistance value determines that the size range of the electrical information PWM output by the control module 1 in the current state is generally 0% -50%, and similarly, the larger the resistance value is, the larger the output PWM duty ratio is.

After the PWM with different duty ratios is regulated by the signal output module 4, voltage or current signals with different amplitudes can be formed, and the voltage or current signals with different amplitudes determine the output brightness of the dimmer, so that the control of the circuit illumination brightness is well realized through the correlation between simple and conventional parameters, meanwhile, the design structure is simple, and the cost is saved.

Of course, it should be further reminded that the specific association relationship is realized by a program, and the specific association program is not a key point protected by the present application, so that detailed description is not provided for this, and meanwhile, after the different duty ratios of the PWM are adjusted by the signal output module 4, voltage signals or current signals with different amplitudes are formed, which is determined according to an actual circuit, and the voltage signals are adopted in the present application, that is, the electric signals are the voltage signals.

Moreover, it is to be noted that, it is easily known that the resistance values of the resistors corresponding to the bright light/dim light illumination are manually set in advance, and in the actual production and use, other resistance values may be set, and specifically, the resistance values may also be determined according to actual needs, and the detailed description is omitted here.

As shown in fig. 4, the signal output module 4 includes a filtering module 41 connected to the control module 1 for filtering the electrical information, i.e., the PWM duty signal, an amplifying module 42 disposed at the rear end of the filtering module 41, and a follower driving module 43 connected to the amplifying module 42.

The filtering module 41 includes a first-stage filter formed of a resistor R5 and a capacitor C5, and a second-stage filter formed of a resistor R6 and a capacitor C6, by which the PWM duty signal is filtered to a smooth voltage signal. Since the amplitude of the PWM is determined by the single chip, the voltage of the single chip is 5V in this application, and the voltage signal is between 0V and 10V in the actual illumination adjustment, in order to meet the requirement, the filtered voltage signal is amplified by the amplifying module 42, so as to output a voltage with a larger amplitude, where the amplification factor is 2 times.

The design of the following driving module 43 can provide stable driving for the circuit, thereby overcoming the problem of insufficient driving capability of the circuit in practical application. In the present embodiment, the amplifying module 42 includes a first operational amplifier U1, and the follower driving module 43 includes a second operational amplifier U2.

In actual lighting, there is a problem that a current guest or guest leaves and may have a certain time interval (for example, two to three minutes) before the guest or guest leaves, and a new guest or guest comes to watch the light, in this case, if a previous guest leaves, the lighting is changed from bright to weak immediately, and when a next guest arrives soon, the lighting needs to be changed from weak to bright immediately, and such repeated operations are likely to cause lighting flickering and flickering, causing discomfort, and at the same time, frequent brightness switching may cause damage to the lighting system.

In order to solve the problem, the system further comprises a delay module 5 which is connected with the control module 1 and provides second setting information, wherein the second setting information corresponds to the delay time for switching the brightness after the external environment is changed from the human state to the unmanned state.

In other words, the present system will refer to the current external environment state and the previous external environment state when performing the illuminance switching. If the current external environment state and the previous external environment state are judged to be a manned state or an unmanned state or the current external environment state is changed from the unmanned state to the manned state, outputting a corresponding PWM duty ratio signal directly according to the resistance value of the potentiometer corresponding to the current external environment state; on the contrary, if the current external environment state is judged to be changed from the manned state to the unmanned state, in order to reduce the switching frequency, the system delays for m minutes and then outputs a corresponding PWM duty ratio signal according to the resistance value of the potentiometer corresponding to the current external environment state.

Obviously, if a new customer visits within the m minutes, the system is protected well because the illumination is still bright at this time, and the brightness does not need to be switched. In this embodiment, m is 5. Of course, other larger or smaller values may be used, depending on the actual requirements.

Similarly, for the convenience of circuit design, the delay module 5 includes a potentiometer connected to the control module 1, and the second setting information is the resistance value of the potentiometer, as shown in fig. 5, the potentiometer corresponding to VR-TIME is a part of the delay module 5. Obviously, the magnitude of the delay time can be set by adjusting the resistance of the potentiometer.

Because each module needs a power supply to provide power when working, the control system of the present application further includes a power supply module 6 for respectively providing energy for the control module 1, the signal detection module 2, the setting module 3, the signal output module 4 and the delay module 5, a specific schematic diagram of the power supply module 6 is shown in fig. 6, and since it is not a protection object of the present application and is also a conventional design, a description thereof will not be provided.

This application is through associating voltage or current signal, PWM duty cycle signal and very conventional resistor resistance, through the resistance that acquires different resistors, thereby output corresponding electrical information, survey external environment state promptly through the detector, select corresponding potentiometre resistance according to external environment state, output the PWM duty cycle signal corresponding with the resistance according to this, and utilize filtering and fortune to put fine giving control voltage signal, ingenious through simple circuit design, realized in the past can only through very professional and complicated expensive system, the cost is saved, the suitability of circuit has been improved.

While embodiments of the invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A control system, characterized by: the system comprises a plurality of devices which are connected with each other,

a control module (1);

the signal detection module (2) is connected with the control module (1) to sense external environment information and transmit the sensed information to the control module (1);

the setting module (3) is connected with the control module (1) and provides first setting information corresponding to the current external environment state in a matching mode when the control module (1) judges that the current external environment is in a manned state or an unmanned state according to the information transmitted by the signal detection module (2);

and the signal output module (4) is connected with the control module (1) and used for adjusting the electric information to output a corresponding electric signal after the control module (1) outputs the corresponding electric information according to the first setting information.

2. The control system of claim 1, wherein:

the system also comprises a delay module (5) which is connected with the control module (1) and provides second setting information, wherein the second setting information corresponds to the delay time of brightness switching after the outside environment is changed from a manned state to an unmanned state.

3. The control system of claim 2, wherein:

the system also comprises a power supply module which respectively provides energy for the control module, the signal detection module, the setting module, the signal output module and the time delay module.

4. The control system of claim 2, wherein:

the setting module (2) and the delay module (5) both comprise potentiometers connected with the control module (1), and the first setting information and the second setting information are current resistance values of the corresponding potentiometers respectively.

5. The control system of claim 1, wherein:

the signal detection module (2) comprises a detector (21) and an isolation component (22) which is connected between the detector (21) and the control module (1) to provide isolation;

the sensed information includes outputting a low level to the control module (1) when the detector (21) senses that there is a person and outputting a high level to the control module (1) when the detector (21) senses that there is no person.

6. The control system of claim 5, wherein:

the isolation component (22) is a diode (D1), and the electrical signal is a voltage signal.

7. The control system of claim 1, wherein:

the signal output module (4) comprises a filtering module (41) connected with the control module (1) to filter the electric information, an amplifying module (42) arranged at the rear end of the filtering module (41) and a following driving module (43) connected with the amplifying module (42);

the electrical information is a PWM duty cycle signal.

8. The control system of claim 7, wherein:

the amplification module (42) comprises a first operational amplifier and the follower drive module (43) comprises a second operational amplifier.

9. A control method characterized by: the method comprises the following steps of,

s1, acquiring external environment information and judging whether the current external environment is in a manned state or an unmanned state;

and S2, acquiring the setting information corresponding to the current external environment state and outputting corresponding electrical information according to the setting information to provide a voltage signal.

10. The control method according to claim 9, characterized in that: the S2 may specifically include the following steps,

s21, acquiring the resistance value of the potentiometer corresponding to the current external environment state, comparing the current external environment state with the external environment state acquired at the previous moment, and executing S22 if the current external environment state is consistent with the external environment state acquired at the previous moment, otherwise executing S23;

s22, outputting a PWM duty ratio signal corresponding to the currently acquired potentiometer resistance value and regulating PWM to output a corresponding voltage signal;

s23, if the current external environment state is changed from the unmanned state to the manned state, executing S22, otherwise, if the current external environment state is changed from the manned state to the unmanned state, executing S24;

s24, delaying m minutes, and executing S22.

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