CN113126177A - Box opening detection circuit and base station equipment using same - Google Patents
Box opening detection circuit and base station equipment using same Download PDFInfo
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- CN113126177A CN113126177A CN202110395218.1A CN202110395218A CN113126177A CN 113126177 A CN113126177 A CN 113126177A CN 202110395218 A CN202110395218 A CN 202110395218A CN 113126177 A CN113126177 A CN 113126177A
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 3
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Telephonic Communication Services (AREA)
Abstract
The invention discloses an open box detection circuit and base station equipment using the same. The unpacking detection circuit is positioned in the box body and comprises a photosensitive resistor and a detection circuit; the photosensitive resistor is connected with the detection circuit; the detection circuit is used for detecting the resistance value of the photosensitive resistor, outputting a level signal according to the resistance value of the photosensitive resistor and sending the level signal to the processing unit, and the level signal represents the opening state or the closing state of the box body. This application can realize the control to the box switching state based on simple and low-cost circuit.
Description
Technical Field
The invention relates to the technical field of monitoring equipment boxes, in particular to a box opening detection circuit and base station equipment using the same.
Background
In order to improve the protection of the articles, people usually place the articles in a box body, such as information in base station equipment, but there is a situation that other people open the box, and in order to protect the articles better, the opening situation of the box needs to be known;
the device for monitoring the opening of the box in the prior art comprises a sensor chip and other complex structures, so that the equipment is high in cost and complexity.
Disclosure of Invention
The invention aims to solve the technical problems of complex structure and high cost of a box opening monitoring device in the prior art.
In order to solve the technical problem, the present application discloses, in one aspect, an open box detection circuit, which is located in a box body and includes a photo resistor and a detection circuit;
the photosensitive resistor is connected with the detection circuit;
the detection circuit is used for detecting the resistance value of the photosensitive resistor, outputting a level signal according to the resistance value of the photosensitive resistor and sending the level signal to the processing unit, and the level signal represents the opening state or the closing state of the box body.
Optionally, the detection circuit includes a voltage comparator and a first resistor;
the voltage comparator comprises a positive input end, a negative input end and an output end;
the positive input end is connected with the first end of the photoresistor;
the negative input end is connected with the first end of the first resistor;
the output end is connected with the processing unit.
Optionally, the voltage comparator is configured to output a first level signal when detecting that the resistance value change of the photo resistor is that the current resistance value of the photo resistor is smaller than or equal to a first preset resistance value, so that the voltage value of the positive input terminal is smaller than the voltage value of the negative input terminal;
the first level signal is used for representing that the box body is in an open state.
Optionally, the voltage comparator is configured to output a second level signal when detecting that the resistance value change of the photo resistor is that the current resistance value of the photo resistor is greater than or equal to a second preset resistance value, so that the voltage value of the positive input terminal is greater than the voltage value of the negative input terminal; the first preset resistance value is smaller than the second preset resistance value;
the second level signal is indicative of the enclosure being in a closed state.
Optionally, the second terminal of the photo resistor is grounded.
Optionally, the detection circuit further includes a second resistor;
the first end of the second resistor is connected with the first end of the photoresistor;
the second end of the second resistor is connected with a first power supply.
Optionally, the detection circuit further includes a third resistor;
the second end of the first resistor is grounded;
the first end of the third resistor is connected with the first end of the first resistor, and the second end of the third resistor is connected with a second power supply.
Optionally, the detection circuit further includes a first capacitor; the voltage comparator further comprises a power supply terminal;
the power supply end is connected with the first end of the first capacitor, and the second end of the first capacitor is grounded;
the first end of the first capacitor is connected with a third power supply.
Optionally, the detection circuit further includes a fourth resistor and a second capacitor;
the output end of the voltage comparator is respectively connected with the first end of the second capacitor and the first end of the fourth resistor;
the second end of the fourth resistor is connected with a fourth power supply;
the second end of the second capacitor is grounded.
The present application also discloses in another aspect a base station apparatus comprising the above-mentioned unpacking detection circuit;
the cabinet includes a cabinet door.
Adopt above-mentioned technical scheme, the detection circuitry that unpacks that this application provided has following beneficial effect:
the unpacking detection circuit is positioned in the box body and comprises a photosensitive resistor and a detection circuit; the photosensitive resistor is connected with the detection circuit; the detection circuit is used for detecting the resistance value of the photosensitive resistor, outputting a level signal according to the resistance value of the photosensitive resistor and sending the level signal to the processing unit, and the level signal represents the opening state or the closing state of the box body. Under such a condition to make this application can realize the control to box on-off state based on simple and low-cost circuit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a connection diagram of an alternative open box detection circuit of the present application;
FIG. 2 is a connection diagram of an alternative open-box detection circuit of the present application;
FIG. 3 is a connection diagram of another alternative open box detection circuit of the present application.
The following is a supplementary description of the drawings:
1-a detection circuit; 11-a first resistance; 12-a voltage comparator; 121-positive input; 122-negative input; 123-an output end; 124-power supply terminal; 125-ground terminal; 13-a second resistance; 14-a third resistance; 15-a fourth resistance; 16-a first capacitance; 17-a second capacitance; 2-photoresistor.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
As can be seen from fig. 1, fig. 1 is a connection diagram of an alternative open box detection circuit of the present application. The application discloses an open box detection circuit in one aspect, the open box detection circuit is positioned in a box body, and the open box detection circuit comprises a photosensitive resistor 2 and a detection circuit 1; the photoresistor 2 is connected with the detection circuit 1; the detection circuit 1 is used for detecting the resistance value of the photosensitive resistor 2, outputting a level signal according to the resistance value of the photosensitive resistor 2, and sending the level signal to the processing unit, wherein the level signal represents the opening state or the closing state of the box body.
In an alternative embodiment, as shown in fig. 2, fig. 2 is a connection diagram of another alternative open box detection circuit of the present application. The detection circuit 1 comprises a voltage comparator 12 and a first resistor 11; the voltage comparator 12 includes a positive input terminal 121, a negative input terminal 122, and an output terminal 123; the positive input terminal 121 is connected to a first terminal of the photo-resistor 2; the negative input terminal 122 is connected to a first terminal of the first resistor 11; the output 123 is connected to the processing unit.
Optionally, the voltage range of the positive input end 121 is 0-3.3V; the voltage range of the negative input terminal 122 is 0-3.3V; the output voltage of the output terminal 123 is 0V or 3.3V, and may be other voltage parameters according to the selected model of the voltage comparator 12, which is not limited herein.
In an alternative embodiment, the voltage comparator 12 is configured to output a first level signal when detecting that the resistance of the photo-resistor 2 changes such that the current resistance of the photo-resistor 2 is less than or equal to a first preset resistance, so that the voltage value of the positive input terminal 121 is less than the voltage value of the negative input terminal 122; the first level signal is used for representing that the box body is in an open state.
In an alternative embodiment, the voltage comparator 12 is configured to output a second level signal when detecting that the resistance of the photo resistor 2 changes such that the current resistance of the photo resistor 2 is greater than or equal to a second predetermined resistance, so that the voltage value of the positive input terminal 121 is greater than the voltage value of the negative input terminal 122; the first preset resistance value is smaller than the second preset resistance value; the second level signal is indicative of the enclosure being in a closed state.
Optionally, by the type of the voltage comparator 12, correspondingly, the first level signal corresponds to a low level of 0V, that is, 0, and the second level signal corresponds to a high level of 3.3V, that is, 1; of course, the first electrical signal may correspond to a high level, and the second electrical signal may correspond to a low level.
Optionally, in this embodiment, the photoresistor 2 is a special resistor made of semiconductor materials such as cadmium sulfide, and the working principle thereof is based on the internal photoelectric effect; the stronger the illumination, the lower the resistance, which is in a high resistance state in the absence of illumination, and the resistance can generally reach several mega ohms.
In an alternative embodiment, the detection circuit 1 further comprises a second resistor 13; a first terminal of the second resistor 13 is connected to a first terminal of the photo-resistor 2; a second terminal of the second resistor 13 is connected to a first power supply. As can be seen from the above description, since the resistance of the photo resistor 2 can be changed according to the light intensity, the photo resistor 2 and the second resistor 13 divide the voltage provided by the first power supply, so that the voltage value of the positive input terminal 121 is changed; to better describe the voltage division principle, the resistance of the second resistor 13 is set to R2, the resistance of the photo-resistor 2 is set to R0, the voltage of the positive input terminal 121 is set to V +, the voltage of the first power supply is set to V0, then it is known that R2, R0 and V0, can obtain V + ═ V0R 0/(R2+ R0), it can be seen that V + is proportional to R0, the lower the resistance of the photo-resistor 2 is the smaller the voltage of the positive input terminal 121 when the light is stronger, whereas, the higher the resistance of the photo-resistor 2 is the larger the voltage of the positive input terminal 121 is the smaller the voltage of the negative input terminal 122 is fixed, on the basis of which, when the door of the box is opened, the light becomes stronger, so that when the resistance of the photo-resistor 2 is reduced to be equal to or less than the first preset resistance, the voltage of the positive input terminal 121 is the smaller the voltage of the negative input terminal 122, so that the voltage comparator 12 outputs a low level; when the box door is closed, illumination weakens, when the resistance of the photoresistor 2 rises to the resistance of more than or equal to the second preset resistance, the voltage value of the positive input end 121 is greater than the voltage value of the negative input end 122, the voltage comparator 12 outputs high level, then the voltage comparator 12 sends the level signal to the processing unit through the output end 123 of the voltage comparator, so that monitoring personnel can monitor the box state in real time, and the processing unit can generate alarm information based on the level signal, and the monitoring personnel can be reminded conveniently.
Optionally, the resistance range of the first resistor 11 is 80-120 kilo-ohms, the resistance range of the photo-resistor 2 is 4-500 kilo-ohms, and the resistance range of the second resistor 13 is 8-12 kilo-ohms.
Optionally, the processing unit is a master controller of the box body, and the follow-up requirement can be in communication connection with the terminal.
In an alternative embodiment, the second terminal of the light dependent resistor 2 is connected to ground.
In an alternative embodiment, as shown in fig. 3, fig. 3 is a connection diagram of another alternative open box detection circuit of the present application. The detection circuit 1 further comprises a third resistor 14; the second end of the first resistor 11 is grounded; a first end of the third resistor 14 is connected to a first end of the first resistor 11, and a second end of the third resistor 14 is connected to a second power supply; the third resistor 14 is used for dividing the voltage with the first resistor 11, and may have other circuit configurations according to the actual voltage and the resistance of the first resistor 11.
Optionally, the third resistor 14 has a resistance value in the range of 80-120 kohms.
In an alternative embodiment, the detection circuit 1 further comprises a first capacitor 16; the voltage comparator 12 further comprises a supply terminal 124; the power supply terminal 124 is connected to a first terminal of the first capacitor 16, and a second terminal of the first capacitor 16 is grounded; a first terminal of the first capacitor 16 is connected to a third power supply.
Optionally, the voltage range of the third power supply is 2.7-5.5V.
In an alternative embodiment, the detection circuit 1 further comprises a fourth resistor 15 and a second capacitor 17; the output end 123 is respectively connected to the first end of the second capacitor 17 and the first end of the fourth resistor 15; a second end of the fourth resistor 15 is connected to a fourth power supply; the second terminal of the second capacitor 17 is connected to ground.
Optionally, the capacitance of the first capacitor 16 is 0-0.2 microfarad, and the capacitance of the second capacitor 17 is 0-0.2 microfarad.
Optionally, the voltage comparator 12 further includes a ground terminal 125.
Optionally, the parameters of the photoresistor 2 include: the bright resistance is 4-7 kilo-ohms and the dark resistance is 500 kilo-ohms.
In an alternative embodiment, as shown in the circuit structure shown in fig. 3, when the resistance of the third resistor 14 is set to R3 and the resistance of the first resistor 11 is set to R1, the first power supply, the second power supply, the third power supply and the fourth power supply are all the same power supply, and according to the voltage division principle, the voltage value V ═ V0 ═ R3/(R3+ R1) at the negative input terminal 122; the voltage value V + at the positive input terminal 121 is V0 × R0/(R2+ R0);
if R1 is 100K Ω and R3 is 100K Ω, V — 3.3 × 100/(100+100) is 1.65V;
when the door is opened, the bright resistor R0 of the photo-resistor 2 is 7K Ω, R2 is 10K Ω, and V0 is 3.3V; v + < V-if V + is 3.3 × 7/(10+7) ═ 1.35V, and the voltage comparator 12 outputs 0;
when the door is closed, the dark resistor R0 of the photo-resistor 2 is 500K Ω, R2 is 10K Ω, and V0 is 3.3V; v + - > 3.3 × 500/(10+500) -. 3.24V, V + > V-, and the voltage comparator 12 outputs 1, so that the processing unit can know the opening and closing states of the box body through the received level signal.
It should be noted that the first power supply, the second power supply, the third power supply and the fourth power supply may all be the same power supply, or may be different power supplies as needed, and a backup battery may be set on the detection circuit 1, so as to avoid that the box opening detection circuit does not work after the power supply is cut off, thereby improving the safety of the detection circuit 1; the first capacitor 16 and the second capacitor 17 function as a filter.
Because the base station has a plurality of personal important information stored therein, anyone is strictly prohibited to open and view the base station at will, but the existing base station equipment does not always have the case-opening alarm detection, so that the safety of the base station cannot be guaranteed; some chassis are realized by using a relatively complex structure and a sensor chip, so that the cost and the complexity of equipment are increased; the box body comprises a box door, so that the base station equipment has the advantages of high safety and low monitoring cost.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The box opening detection circuit is characterized by being located in a box body and comprising a photosensitive resistor (2) and a detection circuit (1);
the photoresistor (2) is connected with the detection circuit (1);
the detection circuit (1) is used for detecting the resistance value of the photosensitive resistor (2), outputting a level signal according to the resistance value of the photosensitive resistor (2), and sending the level signal to the processing unit, wherein the level signal represents the opening state or the closing state of the box body.
2. A case-open detection circuit according to claim 1, characterized in that the detection circuit (1) comprises a voltage comparator (12) and a first resistor (11);
the voltage comparator (12) comprises a positive input end (121), a negative input end (122) and an output end (123);
the positive input end (121) is connected with a first end of the photoresistor (2);
the negative input end (122) is connected with a first end of the first resistor (11);
the output (123) is connected to the processing unit.
3. The box opening detection circuit according to claim 2, wherein the voltage comparator (12) is configured to output a first level signal when detecting that the resistance value of the photo resistor (2) changes such that the current resistance value of the photo resistor (2) is less than or equal to a first preset resistance value, so that the voltage value of the positive input terminal (121) is less than the voltage value of the negative input terminal (122);
the first level signal represents that the box body is in an open state.
4. The box opening detection circuit according to claim 3, wherein the voltage comparator (12) is configured to output a second level signal when detecting that the resistance value of the photo resistor (2) changes such that the current resistance value of the photo resistor (2) is greater than or equal to a second preset resistance value, so that the voltage value of the positive input terminal (121) is greater than the voltage value of the negative input terminal (122); the first preset resistance value is smaller than the second preset resistance value;
the second level signal is characterized in that the box body is in a closed state.
5. A case open detection circuit according to claim 2, characterized in that the second terminal of the light dependent resistor (2) is connected to ground.
6. A case opening detection circuit according to claim 5, characterized in that the detection circuit (1) further comprises a second resistor (13);
the first end of the second resistor (13) is connected with the first end of the photoresistor (2);
the second end of the second resistor (13) is connected with a first power supply.
7. A case-open detection circuit according to claim 2, characterized in that the detection circuit (1) further comprises a third resistor (14);
the second end of the first resistor (11) is grounded;
the first end of the third resistor (14) is connected with the first end of the first resistor (11), and the second end of the third resistor (14) is connected with a second power supply.
8. A case-open detection circuit according to claim 2, characterized in that the detection circuit (1) further comprises a first capacitance (16);
the voltage comparator (12) further comprises a supply terminal (124);
the power supply end (124) is connected with a first end of the first capacitor (16), and a second end of the first capacitor (16) is grounded;
the first end of the first capacitor (16) is connected with a third power supply.
9. A case-open detection circuit according to claim 2, characterized in that the detection circuit (1) further comprises a fourth resistor (15) and a second capacitor (17);
the output end (123) is respectively connected with a first end of the second capacitor (17) and a first end of the fourth resistor (15);
the second end of the fourth resistor (15) is connected with a fourth power supply;
the second end of the second capacitor (17) is grounded.
10. A base station apparatus, characterized by comprising the box-open detection circuit according to any one of claims 1 to 9;
the box body comprises a box door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110395218.1A CN113126177A (en) | 2021-04-13 | 2021-04-13 | Box opening detection circuit and base station equipment using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110395218.1A CN113126177A (en) | 2021-04-13 | 2021-04-13 | Box opening detection circuit and base station equipment using same |
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| Publication Number | Publication Date |
|---|---|
| CN113126177A true CN113126177A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110395218.1A Pending CN113126177A (en) | 2021-04-13 | 2021-04-13 | Box opening detection circuit and base station equipment using same |
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| CN210071963U (en) * | 2019-04-23 | 2020-02-14 | 深圳市博实结科技有限公司 | Ignition start detection circuit and ignition start detection device |
| CN212330990U (en) * | 2020-05-26 | 2021-01-12 | 宝合工业工具(上海)有限公司 | Intelligence prevents losing toolbox |
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| WO2016054883A1 (en) * | 2014-10-09 | 2016-04-14 | 中兴通讯股份有限公司 | Warning signal generating device, base station power equipment and base station power system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ran Jianfei Inventor after: Yang Bo Inventor before: Yang Bo |