CN214375182U - Monitoring device based on power monitoring - Google Patents
Monitoring device based on power monitoring Download PDFInfo
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- CN214375182U CN214375182U CN202120458872.8U CN202120458872U CN214375182U CN 214375182 U CN214375182 U CN 214375182U CN 202120458872 U CN202120458872 U CN 202120458872U CN 214375182 U CN214375182 U CN 214375182U
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Abstract
The utility model relates to a radar speed measuring device, in particular to a monitoring device based on power monitoring and capable of rapidly sending out an alarm signal under the abnormal condition of power supply, which is characterized in that a base is arranged, a support cylinder is arranged on the base, a shell is arranged on the support cylinder, the shell is prism-shaped and is provided with four sides, the front and the back of the shell are respectively provided with a radar speed measuring mechanism, the side of the shell is provided with an illuminating mechanism, the top of the shell is provided with a solar cell panel, the solar cell panel is connected with a storage battery, the storage battery is arranged in the shell, the solar cell panel is fixed at the top of the shell through a support plate, the support plate is provided with an outer convex upper surface, and the solar cell panel is arranged along the radian of the upper surface of the support plate; the power failure automatic alarm device is also provided with a power supply circuit and a power failure automatic alarm circuit, wherein the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator.
Description
The technical field is as follows:
the utility model relates to a radar speed sensor, specific monitoring device based on power monitoring that can send alarm signal rapidly under the power supply abnormal conditions that says so.
Background art:
with the maturity of radar speed measurement technology, the device has been widely applied to people's production and life, wherein the core speed measurement part of outdoor speed prompting device adopts radar speed measurement circuit promptly. At the present stage, the outdoor vehicle speed prompting device is fixed in the arrangement place and needs to be monitored for a long time, the power is supplied by a mains supply power supply line, and if a power failure occurs, the continuous monitoring work is influenced. In addition, the current speed measuring device function is single, often only provides to drive the vehicle speed test, shows the function, and in order to ensure the vehicle and the safety of driving under the darker condition of environment, often need set up the street lamp, the energy consumption is higher under the state that the street lamp is normally opened. How to effectively reduce energy consumption on the premise of ensuring the driving safety of a vehicle is a problem to be solved urgently.
The invention content is as follows:
the utility model discloses to the shortcoming that exists among the prior art and not enough, provide one kind can send alarm signal's monitoring device based on power monitoring rapidly under the power supply abnormal conditions.
The utility model discloses a following measure reaches:
a monitoring device based on power monitoring is characterized by being provided with a base, wherein a supporting cylinder is arranged on the base, a shell is arranged on the supporting cylinder, the shell is in a prism shape with four sides, a radar speed measuring mechanism is respectively arranged on the front side and the back side of the shell, an illuminating mechanism is arranged on the side of the shell, a solar cell panel is arranged on the top of the shell, the solar cell panel is connected with a storage battery, the storage battery is arranged in the shell, the solar cell panel is fixed on the top of the shell through a supporting plate, the supporting plate is provided with an outer convex upper surface, and the solar cell panel is arranged along the radian of the upper surface of the supporting plate; the power failure automatic alarm device is also provided with a power supply circuit and a power failure automatic alarm circuit, wherein the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator.
The utility model discloses a power failure automatic alarm circuit still is equipped with diode VD1, wherein the negative pole of diode VD1 is connected with resistance R1 respectively, electric capacity C1 links to each other, the other end of resistance R1 links to each other with alternating current power supply pilot lamp VD2 positive pole, alternating current power supply pilot lamp VD2 negative pole connection power supply negative pole, electric capacity C1 is used for carrying out filtering treatment to the incoming signal of telecommunication, electric capacity C1's another termination power supply negative pole, emitting diode VD3 constitutes the opto-coupler structure with photo resistance R4, emitting diode VD 3's negative pole connection power supply negative pole, the positive pole links to each other with diode VD 1's negative pole after establishing ties with resistance R2, photo resistance R4 one end links to each other with triode VT 1's base, another end ground connection, resistance R3 one end connects the DC power supply positive terminal, one end links to each other with triode VT 1's base, triode VT1 base still links to each other with resistance R5 one end, the other end of resistance R5's the other end links to each other end with electric capacity C2, the other end of electric capacity C2 is connected with emitting diode VD4 positive pole, the negative electrode of the light-emitting diode VD4 is grounded, the emitting electrode of the triode VT1 is grounded, the collector electrode of the triode VT1 is connected with the base electrode of the triode VT2, the emitting electrode of the triode VT2 is connected with the positive electrode of a power supply, the collector electrode of the triode VT2 is connected with one end of the loudspeaker BL1, the other end of the loudspeaker BL1 is grounded, and the collector electrode of the triode VT2 is connected with the positive electrode of the light-emitting diode VD 4.
Radar speed measuring mechanism is including setting up display screen, radar speed measuring circuit, display circuit and controller, and wherein the controller adopts STM32 singlechip, is equipped with radar speed sensor among the radar speed measuring circuit, and radar speed sensor adopts the K-LC6 of Switzerland RFbeam company, and its connected mode with the controller is this for prior art, does not give unnecessary details.
Be equipped with the photoswitch circuit among the lighting mechanism, the photoswitch circuit links to each other with the light, the photoswitch circuit includes rectifier diode VD1, thyristor VS1, photo resistance R1, sensitivity adjustable variable resistance RP1, wherein diode VD 1's negative pole and variable resistance RP1, photo resistance R1 establishes ties in proper order, thyristor VS 1's positive pole links to each other with lamp H1, lamp H1's the other end links to each other with rectifier diode VD 1's anodal, thyristor VS 1's gate pole is connected between photo resistance R1 and variable resistance RP1, thyristor VS 1's negative pole links to each other with photo resistance R1's the other end.
Solar cell panel sets up in backup pad central authorities, and the backup pad is epitaxial to reserve annular blank region, and blank region is equipped with the ponding overflow launder more than two, and the ponding overflow launder is the bar groove of indent, and the tank bottom of ponding overflow launder is the inclined plane, and the higher one end of tank bottom is close to backup pad central authorities to make solar cell panel wholly be the arc that suits with backup pad upper surface and distribute, avoid ponding in the backup pad.
Adopt the LED lamp to realize the illumination among the lighting mechanism.
The utility model discloses at the during operation, through the automatic alarm circuit that has a power failure, realize the audio-visual quick warning of power supply trouble, commercial power 220V alternating voltage passes through VD1 half-wave rectification and C1 filters after, the direct current voltage who obtains adds to VD2 through resistance R1, make it luminous, indicate that the power supply is normal, simultaneously through resistance R2, add VD3, make VD3 luminous, thereby make the photo resistance R4 resistance reduce, the voltage that +3V direct current voltage passes through resistance R3 and resistance R4 partial pressure adds triode VT 1's base, triode VT1 ends this moment, do not report to the police; if the power is off, VD3 does not emit light, the resistance value of the photoresistor R4 is obviously increased, the triode VT1 enters an amplifying state, at the moment, the loudspeaker BL1 outputs an alarm signal, and VD4 is bright to prompt power failure; the solar energy battery panel and the storage battery are used for providing power for the whole device, in order to reduce power consumption, the device is provided with the illuminating mechanism with the photoswitch structure and the radar speed measuring mechanism, a radar speed measuring sensor in the radar speed measuring mechanism is used for detecting running targets around the device and displaying the speed of the current running targets, the illuminating mechanism switches working states according to different ambient light intensities, the illuminating mechanism is started under the condition of poor light intensity, and the illuminating mechanism is stopped under the condition of good light intensity; in addition, through the overflow launder that sets up backup pad and backup pad outer fringe, in time the drain is ponding, prevents to damage electrical equipment.
Compared with the prior art, the utility model, have rational in infrastructure, the function is perfect, the reliable operation etc. is showing the advantage.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an implementation schematic diagram of the lighting mechanism of the present invention.
Fig. 3 is another schematic structural diagram of the present invention.
Fig. 4 is a schematic diagram of the automatic power failure alarm circuit of the present invention.
Reference numerals: base 1, support column 2, casing 3, solar cell panel 4, backup pad 5, display screen 6, light 7, radar speed sensor 8.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings and examples.
As shown in the attached drawing 1, the utility model provides a vehicle speed monitoring device based on power monitoring aiming at the defects and shortcomings existing in the prior art, which is provided with a base 1, a support cylinder 2 is arranged on the base 1, a shell 3 is arranged on the support cylinder 2, the shell 3 is prism-shaped with four sides, the front and the back of the shell 3 are respectively provided with a radar speed measuring mechanism, the side of the shell is provided with a lighting mechanism, the top of the shell 3 is provided with a solar cell panel 4, the solar cell panel 4 is connected with a storage battery, the storage battery is arranged in the shell 3, the solar cell panel 4 is fixed at the top of the shell 3 through a support plate 5, the support plate 5 is provided with an outer convex upper surface, and the solar cell panel 4 is arranged along the radian of the upper surface of the support plate 5; the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator; the automatic power failure alarm circuit is also provided with a diode VD1, wherein the cathode of the diode VD1 is respectively connected with a resistor R1 and a capacitor C1, the other end of the resistor R1 is connected with the anode of an alternating current power supply indicator VD2, the cathode of the alternating current power supply indicator VD2 is connected with the cathode of a power supply, the capacitor C1 is used for filtering an input electric signal, the other end of the capacitor C1 is connected with the cathode of the power supply, a light-emitting diode VD3 and a photoresistor R4 form an optical coupling structure, the cathode of the light-emitting diode VD3 is connected with the cathode of the power supply, the anode is connected with the cathode of the diode VD1 after being connected with the resistor R2 in series, one end of the photoresistor R4 is connected with the base of a triode VT1 and the other end of the triode VT1 is grounded, one end of the resistor R3 is connected with the anode of a direct current power supply, one end of the triode VT1, the base of the triode VT1 is also connected with one end of the resistor R5, the other end of the resistor R5 is connected with the capacitor C2, the other end of the capacitor C2 is connected with the anode of the light-emitting diode VD4, the negative electrode of the light-emitting diode VD4 is grounded, the emitting electrode of the triode VT1 is grounded, the collector electrode of the triode VT1 is connected with the base electrode of the triode VT2, the emitting electrode of the triode VT2 is connected with the positive electrode of a power supply, the collector electrode of the triode VT2 is connected with one end of the loudspeaker BL1, the other end of the loudspeaker BL1 is grounded, and the collector electrode of the triode VT2 is connected with the positive electrode of the light-emitting diode VD 4.
Radar speed measuring mechanism is including setting up display screen 6, radar speed measuring circuit, display circuit and controller, and wherein the controller adopts STM32 singlechip, is equipped with radar speed sensor among the radar speed measuring circuit, and radar speed sensor adopts the K-LC6 of Switzerland RFbeam company, and its connected mode with the controller is this for prior art, does not give unnecessary details.
Be equipped with the photoswitch circuit among the lighting mechanism, the photoswitch circuit links to each other with light 7, the photoswitch circuit includes rectifier diode VD1, thyristor VS1, photo resistance R1, sensitivity adjustable variable resistance RP1, wherein diode VD 1's negative pole and variable resistance RP1, photo resistance R1 establishes ties in proper order, thyristor VS 1's positive pole links to each other with lamp H1, lamp H1's the other end links to each other with rectifier diode VD 1's positive pole, thyristor VS 1's gate pole is connected between photo resistance R1 and variable resistance RP1, thyristor VS 1's negative pole links to each other with photo resistance R1's the other end.
Adopt the LED lamp to realize the illumination among the lighting mechanism.
Example 1:
as shown in fig. 3, the present example provides a vehicle speed monitoring device based on power monitoring, which includes a base 1, a support cylinder 2 disposed on the base 1, a housing 3 disposed on the support cylinder 2, the housing 3 being prism-shaped with four sides, radar speed measuring mechanisms respectively disposed on the front and back of the housing 3, an illuminating mechanism disposed on the side of the housing, a solar panel 4 disposed on the top of the housing 3, the solar panel 4 being connected to a storage battery, the storage battery being disposed in the housing 3, the solar panel 4 being fixed on the top of the housing 3 via a support plate 5, the support plate 5 having an outer convex upper surface, the solar panel 4 being disposed along the upper surface of the support plate 5; the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator; the automatic power failure alarm circuit is also provided with a diode VD1, wherein the cathode of the diode VD1 is respectively connected with a resistor R1 and a capacitor C1, the other end of the resistor R1 is connected with the anode of an alternating current power supply indicator VD2, the cathode of the alternating current power supply indicator VD2 is connected with the cathode of a power supply, the capacitor C1 is used for filtering an input electric signal, the other end of the capacitor C1 is connected with the cathode of the power supply, a light-emitting diode VD3 and a photoresistor R4 form an optical coupling structure, the cathode of the light-emitting diode VD3 is connected with the cathode of the power supply, the anode is connected with the cathode of the diode VD1 after being connected with the resistor R2 in series, one end of the photoresistor R4 is connected with the base of a triode VT1 and the other end of the triode VT1 is grounded, one end of the resistor R3 is connected with the anode of a direct current power supply, one end of the triode VT1, the base of the triode VT1 is also connected with one end of the resistor R5, the other end of the resistor R5 is connected with the capacitor C2, the other end of the capacitor C2 is connected with the anode of the light-emitting diode VD4, the negative electrode of the light-emitting diode VD4 is grounded, the emitter of the triode VT1 is grounded, the collector of the triode VT1 is connected with the base electrode of the triode VT2, the emitter of the triode VT2 is connected with the positive electrode of a power supply, the collector of the triode VT2 is connected with one end of the loudspeaker BL1, the other end of the loudspeaker BL1 is grounded, and the collector of the triode VT2 is connected with the positive electrode of the light-emitting diode VD 4;
Example 2:
the embodiment provides a vehicle speed monitoring device based on power supply monitoring, which is provided with a base 1, wherein a supporting cylinder 2 is arranged on the base 1, a shell 3 is arranged on the supporting cylinder 2, the shell 3 is prismatic and has four sides, radar speed measuring mechanisms are respectively arranged on the front side and the back side of the shell 3, a lighting mechanism is arranged on the side surface of the shell, a solar cell panel 4 is arranged on the top of the shell 3, the solar cell panel 4 is connected with a storage battery, the storage battery is arranged in the shell 3, the solar cell panel 4 is fixed on the top of the shell 3 through a supporting plate 5, the supporting plate 5 is provided with an outer convex upper surface, and the solar cell panel 4 is arranged along the radian of the upper surface of the supporting plate 5; the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator; the automatic power failure alarm circuit is also provided with a diode VD1, wherein the cathode of the diode VD1 is respectively connected with a resistor R1 and a capacitor C1, the other end of the resistor R1 is connected with the anode of an alternating current power supply indicator VD2, the cathode of the alternating current power supply indicator VD2 is connected with the cathode of a power supply, the capacitor C1 is used for filtering an input electric signal, the other end of the capacitor C1 is connected with the cathode of the power supply, a light-emitting diode VD3 and a photoresistor R4 form an optical coupling structure, the cathode of the light-emitting diode VD3 is connected with the cathode of the power supply, the anode is connected with the cathode of the diode VD1 after being connected with the resistor R2 in series, one end of the photoresistor R4 is connected with the base of a triode VT1 and the other end of the triode VT1 is grounded, one end of the resistor R3 is connected with the anode of a direct current power supply, one end of the triode VT1, the base of the triode VT1 is also connected with one end of the resistor R5, the other end of the resistor R5 is connected with the capacitor C2, the other end of the capacitor C2 is connected with the anode of the light-emitting diode VD4, the negative electrode of the light-emitting diode VD4 is grounded, the emitter of the triode VT1 is grounded, the collector of the triode VT1 is connected with the base electrode of the triode VT2, the emitter of the triode VT2 is connected with the positive electrode of a power supply, the collector of the triode VT2 is connected with one end of the loudspeaker BL1, the other end of the loudspeaker BL1 is grounded, and the collector of the triode VT2 is connected with the positive electrode of the light-emitting diode VD 4;
the radar speed measuring mechanism comprises a display screen 6, a radar speed measuring circuit, a display circuit and a controller, wherein the controller adopts an STM32 single chip microcomputer, a radar speed measuring sensor is arranged in the radar speed measuring circuit, the radar speed measuring sensor adopts K-LC6 of RFbeam company of Switzerland, and the connection mode of the radar speed measuring sensor and the controller is the prior art and is not described again;
as shown in fig. 2, a photoswitch circuit is disposed in the lighting mechanism, the photoswitch circuit is connected to the lighting lamp 7, the photoswitch circuit includes a rectifying diode VD1, a thyristor VS1, a photo resistor R1, and a variable resistor RP1 with adjustable sensitivity, wherein a negative electrode of the diode VD1 is sequentially connected in series with the variable resistor RP1 and the photo resistor R1, an anode of the thyristor VS1 is connected to the lamp H1, the other end of the lamp H1 is connected to an anode of the rectifying diode VD1, a gate of the thyristor VS1 is connected between the photo resistor R1 and the variable resistor RP1, and a cathode of the thyristor VS1 is connected to the other end of the photo resistor R1;
in this example, when the light is bright, the resistance of the photoresistor R1 is small, the voltage of the electric signal is further reduced after being rectified by the rectifying diode VD1 and after the voltage division of the variable resistor RP1 and the photoresistor R1, the voltage applied to the control electrode of the thyristor VS1 is small, and the thyristor VS1 is not conducted, so that the lamp H1 has no current and does not provide illumination; when the light is dark, the resistance of the photoresistor R1 is increased, the voltage of the variable resistor RP1 and the photoresistor R1 is divided, the voltage applied to the control electrode of the thyristor VS1 is large, the thyristor VS1 is conducted, and the lamp H1 is lighted at the moment.
The utility model discloses at the during operation, through the automatic alarm circuit that has a power failure, realize the audio-visual quick warning of power supply trouble, commercial power 220V alternating voltage passes through VD1 half-wave rectification and C1 filters after, the direct current voltage who obtains adds to VD2 through resistance R1, make it luminous, indicate that the power supply is normal, simultaneously through resistance R2, add VD3, make VD3 luminous, thereby make the photo resistance R4 resistance reduce, the voltage that +3V direct current voltage passes through resistance R3 and resistance R4 partial pressure adds triode VT 1's base, triode VT1 ends this moment, do not report to the police; if the power is off, VD3 does not emit light, the resistance value of the photoresistor R4 is obviously increased, the triode VT1 enters an amplifying state, at the moment, the loudspeaker BL1 outputs an alarm signal, and VD4 is bright to prompt power failure; the solar energy battery panel and the storage battery are used for providing power for the whole device, in order to reduce power consumption, the device is provided with the illuminating mechanism with the photoswitch structure and the radar speed measuring mechanism, a radar speed measuring sensor in the radar speed measuring mechanism is used for detecting running targets around the device and displaying the speed of the current running targets, the illuminating mechanism switches working states according to different ambient light intensities, the illuminating mechanism is started under the condition of poor light intensity, and the illuminating mechanism is stopped under the condition of good light intensity; in addition, through the overflow launder that sets up backup pad and backup pad outer fringe, in time the drain is ponding, prevents to damage electrical equipment.
Compared with the prior art, the utility model, have rational in infrastructure, the function is perfect, the reliable operation etc. is showing the advantage.
Claims (5)
1. A monitoring device based on power monitoring is characterized by being provided with a base, wherein a supporting cylinder is arranged on the base, a shell is arranged on the supporting cylinder, the shell is in a prism shape with four sides, a radar speed measuring mechanism is respectively arranged on the front side and the back side of the shell, an illuminating mechanism is arranged on the side of the shell, a solar cell panel is arranged on the top of the shell, the solar cell panel is connected with a storage battery, the storage battery is arranged in the shell, the solar cell panel is fixed on the top of the shell through a supporting plate, the supporting plate is provided with an outer convex upper surface, and the solar cell panel is arranged along the radian of the upper surface of the supporting plate; the power failure automatic alarm device is also provided with a power supply circuit and a power failure automatic alarm circuit, wherein the power failure automatic alarm circuit is provided with an alternating current power supply indicator lamp VD2, a red light-emitting diode VD4, a photoresistor R4, a loudspeaker BL1 and a low-frequency oscillator.
2. The monitoring device based on power monitoring as claimed in claim 1, wherein the automatic power failure alarm circuit further comprises a diode VD1, wherein the cathode of the diode VD1 is connected to the resistor R1 and the capacitor C1 respectively, the other end of the resistor R1 is connected to the anode of the ac power indicator VD2, the cathode of the ac power indicator VD2 is connected to the cathode of the power supply, the capacitor C1 is used for filtering the input electrical signal, the other end of the capacitor C1 is connected to the cathode of the power supply, the light emitting diode 58vd 26 and the photo resistor R4 form an optical coupling structure, the cathode of the light emitting diode VD3 is connected to the cathode of the diode VD1, the anode is connected in series with the resistor R2 and then connected to the cathode of the diode VD1, one end of the photo resistor R4 is connected to the base of the triode VT1 and the other end is grounded, one end of the resistor R3 is connected to the anode of the dc power supply, the base of the triode VT1 is connected to the base of the triode 1 is further connected to one end of the resistor R5, the other end of the resistor R5 is connected with a capacitor C2, the other end of the capacitor C2 is connected with the anode of a light-emitting diode VD4, the cathode of the light-emitting diode VD4 is grounded, the emitter of a triode VT1 is grounded, the collector of a triode VT1 is connected with the base of a triode VT2, the emitter of the triode VT2 is connected with the anode of a power supply, the collector of a triode VT2 is connected with one end of a loudspeaker BL1, the other end of the loudspeaker BL1 is grounded, and the collector of the triode VT2 is connected with the anode of a light-emitting diode VD 4.
3. The monitoring device based on power monitoring of claim 1, wherein the radar speed measuring mechanism comprises a display screen, a radar speed measuring circuit, a display circuit and a controller, wherein the controller adopts an STM32 single chip microcomputer, and a radar speed measuring sensor is arranged in the radar speed measuring circuit.
4. The monitoring device based on power supply monitoring as claimed in claim 1, wherein a light-operated switch circuit is arranged in the lighting mechanism, the light-operated switch circuit is connected with a lighting lamp, the light-operated switch circuit comprises a rectifier diode VD1, a thyristor VS1, a photoresistor R1 and a variable resistor RP1 with adjustable sensitivity, wherein the cathode of the diode VD1 is sequentially connected with the variable resistor RP1 and the photoresistor R1 in series, the anode of the thyristor VS1 is connected with the lamp H1, the other end of the lamp H1 is connected with the anode of the rectifier diode VD1, the gate of the thyristor VS1 is connected between the photoresistor R1 and the variable resistor RP1, and the cathode of the thyristor VS1 is connected with the other end of the photoresistor R1.
5. The monitoring device based on power monitoring of claim 1, wherein the solar panel is disposed in the center of the support plate, and an annular blank area is reserved on the extension of the support plate, the blank area is provided with two or more water accumulation overflow grooves, the water accumulation overflow grooves are concave strip-shaped grooves, the bottom of each water accumulation overflow groove is an inclined surface, and the higher end of the bottom of each water accumulation overflow groove is close to the center of the support plate, so that the solar panel is integrally distributed in an arc shape corresponding to the upper surface of the support plate, and water accumulation on the support plate is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120458872.8U CN214375182U (en) | 2021-03-03 | 2021-03-03 | Monitoring device based on power monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120458872.8U CN214375182U (en) | 2021-03-03 | 2021-03-03 | Monitoring device based on power monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214375182U true CN214375182U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120458872.8U Expired - Fee Related CN214375182U (en) | 2021-03-03 | 2021-03-03 | Monitoring device based on power monitoring |
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| Country | Link |
|---|---|
| CN (1) | CN214375182U (en) |
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2021
- 2021-03-03 CN CN202120458872.8U patent/CN214375182U/en not_active Expired - Fee Related
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Granted publication date: 20211008 |