CN218099980U - Water meter power supply system and water meter - Google Patents
Water meter power supply system and water meter Download PDFInfo
- Publication number
- CN218099980U CN218099980U CN202221867328.XU CN202221867328U CN218099980U CN 218099980 U CN218099980 U CN 218099980U CN 202221867328 U CN202221867328 U CN 202221867328U CN 218099980 U CN218099980 U CN 218099980U
- Authority
- CN
- China
- Prior art keywords
- battery
- resistor
- power supply
- triode
- water meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to an intelligence water gauge technical field especially relates to a water gauge power system and water gauge, water gauge power system includes MCU control assembly, with power supply system, battery that MCU control assembly communication is connected are pulled out and are inserted detection circuitry, battery activation and capacity detection circuitry and the real-time power supply ability detection circuitry of power, power supply system include the battery and with the parallelly connected electric capacity of battery, battery is pulled out and is inserted detection circuitry and be used for detecting the battery state, battery activation and capacity detection circuitry are used for activating the battery and detect battery capacity, the real-time power supply ability detection circuitry of power is used for detecting the power supply ability of power supply system; the MCU control assembly comprises an MCU processing unit, and a communication unit, an LCD unit, a power management control unit, a water quantity signal processing unit and a valve driving unit which are connected with the MCU processing unit.
Description
Technical Field
The utility model relates to an intelligence water gauge technical field especially relates to a water gauge electrical power generating system and water gauge.
Background
The application of intelligent water gauge is more and more extensive, and the intelligent water gauge in market all uses the battery to supply power. The reason that the battery is selected for power supply instead of the power supply is mainly that the water consumption of the user is not influenced even if the power is cut off in an emergency; the water meter batteries are two types, one is lithium zinc and zinc batteries, the other is dry batteries, considering the environment of the water meter, possibly high temperature and humidity, and environmental pollution, most of the selected batteries for supplying power.
The lithium zinc and zinc batteries power supply method for users brought a lot of convenience, but because the lithium zinc and zinc batteries characteristics and battery management method is unreasonable, some mishandling, including: environmental influences such as low temperatures cause battery false alarms with no battery power; the false alarm battery is dead due to various heavy current conditions such as valve closing or communication; poor management such as suggestion electric quantity is not enough and close valve opportunity etc. is not right, all will directly influence the current water gauge working power supply stability of user's water, if the battery connects the reverse circuit that causes easily and damages, can not learn the battery electric quantity, can have the battery and take place the passivation and can not in time supply the problem of stabilizing the power supply. The patent document with the application number 202020963843.2 provides an intelligent water meter power management circuit, the power management circuit cannot activate a battery, the service life of the battery is short, and the power management circuit cannot monitor and detect a power supply and the battery in real time.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned background art, the utility model provides a water gauge electrical power generating system and water gauge.
In order to realize the above purpose, the utility model provides a water gauge electrical power generating system and water gauge, this water gauge electrical power generating system includes: the system comprises an MCU control assembly, a power supply system, a battery plugging detection circuit, a battery activation and capacity detection circuit and a power supply real-time power supply capacity detection circuit, wherein the power supply system, the battery plugging detection circuit, the battery activation and capacity detection circuit and the power supply real-time power supply capacity detection circuit are in communication connection with the MCU control assembly; the MCU control assembly comprises an MCU processing unit, and a communication unit, an LCD unit, a power management control unit, a water quantity signal processing unit and a valve driving unit which are connected with the MCU processing unit.
Further, the power supply system comprises a socket XS1, a battery, a capacitor C1, a capacitor C2 and a diode V3;
the pin 1 of the socket XS1 is connected with the anode of the diode V3, and the battery is connected between the pin 1 of the socket XS1 and the anode of the diode V3;
the 2 pin of the socket XS1 is grounded;
a capacitor C1 and a capacitor C2 are connected in parallel between the pin 2 of the socket XS1 and the cathode of the diode V3;
and a jumper switch is arranged on a connecting circuit of the capacitor C1 and the cathode of the diode V3.
Further, the battery plugging detection circuit comprises a voltage detection chip V722 and a diode V3;
the pin 3 of the voltage detection chip V722 is connected with the battery;
the 2 pin of the voltage detection chip V722 is grounded;
the pin 1 of the voltage detection chip V722 is connected with the anode of the diode V35;
and the cathode of the diode V35 is connected with an IO interface of the MCU control assembly.
Further, the battery activation and capacity detection circuit comprises a CHECK-BAR1 control end, a triode V10, a triode V13, a resistor R30, a resistor R32 and a resistor R43;
the emitting electrode of the triode V10 is connected with the positive electrode of the battery, the collecting electrode of the triode V10 is connected with the resistor R32, the resistor R32 is connected with the resistor R43 in series, the resistor R43 is connected with the emitting electrode of the triode V13, the emitting electrode of the triode V13 is grounded, the collecting electrode of the triode V13 is connected with the resistor R30, the other end of the resistor R30 is connected with the base electrode of the triode V10, the base electrode of the triode V13 is connected with the CHECK-BAR1 control end, the CHECK-BAR1 control end is connected with the MCU control component, and an A/D converter is connected between the resistor R32 and the resistor R43 to obtain the voltage value of the battery.
Further, the power supply real-time power supply capability detection circuit comprises a CHECK-BAR control end, a triode V1, a triode V5, a resistor R1, a resistor R5 and a resistor R8;
the emitting electrode of the triode V1 is connected with the positive electrode of a battery, the collecting electrode of the triode V1 is connected with the resistor R1, the resistor R1 is connected with the resistor R8 in series, the resistor R8 is connected with the emitting electrode of the triode V5, the emitting electrode of the triode V5 is grounded, the collecting electrode of the triode V5 is connected with the resistor R5, the other end of the resistor R5 is connected with the base electrode of the triode V1, the base electrode of the triode V5 is connected with the CHECK-BAR control end, the CHECK-BAR control end is connected with the MCU control component, and an A/D converter is connected between the resistor R1 and the resistor R8 to obtain the voltage value of the power supply system.
Furthermore, a metering sensor and a valve are arranged on the water meter, a valve driving mechanism drives the valve switch, the metering sensor is in signal connection with the water quantity signal processing unit, and the valve driving mechanism is in signal connection with the valve driving unit.
Further, the power management control unit is connected with a battery.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect: the utility model provides a water gauge power system includes MCU control assembly, power supply system, battery that are connected with MCU control assembly communication are pulled out and are inserted detection circuitry, battery activation and capacity detection circuitry and the real-time power supply ability detection circuitry of power, power supply system include the battery and with the electric capacity that the battery connects in parallel, battery pull out and insert detection circuitry and be used for detecting the battery state, detect whether the battery is power-on or outage; the battery is activated firstly through the battery activation and capacity detection circuit, then the battery capacity is detected, and the power supply capacity of the power supply system is detected through the power supply real-time power supply capacity detection circuit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a water meter power supply system provided by the present invention;
fig. 2 is a schematic view of the water meter according to the present invention;
fig. 3 is a schematic flow chart of a management method of a water meter power supply system provided by the present invention;
fig. 4 is a schematic circuit diagram of a power supply system provided by the present invention;
fig. 5 is a schematic circuit diagram of the battery plugging detection circuit provided by the present invention;
fig. 6 is a schematic circuit diagram of the battery activation and capacity detection circuit provided by the present invention;
fig. 7 is the utility model provides a circuit principle schematic diagram of power supply real-time power supply ability detection circuitry.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Example 1:
the utility model relates to a water gauge electrical power generating system, as shown in FIG. 1, wherein, water gauge electrical power generating system includes: the system comprises an MCU control assembly, a power supply system, a battery plugging detection circuit, a battery activation and capacity detection circuit and a power supply real-time power supply capacity detection circuit, wherein the power supply system is in communication connection with the MCU control assembly and comprises a battery and a capacitor connected with the battery in parallel; the utility model provides a water gauge power system includes MCU control assembly, power supply system, battery that are connected with MCU control assembly communication are pulled out and are inserted detection circuitry, battery activation and capacity detection circuitry and the real-time power supply ability detection circuitry of power, power supply system include the battery and with the electric capacity that the battery connects in parallel, battery pull out and insert detection circuitry and be used for detecting the battery state, detect whether the battery is power-on or outage; the battery is activated firstly through the battery activation and capacity detection circuit, then the battery capacity is detected, and the power supply capacity of the power supply system is detected through the power supply real-time power supply capacity detection circuit.
Further, as shown in fig. 4, the power supply system is a power supply composed of a lithium sub-battery and a capacitor, wherein the power supply system includes a socket XS1, a battery, a capacitor C1, a capacitor C2, and a diode V3; the socket XS1 is in a HDR1x2 type, the socket XS1 is a row of two-core sockets, a pin 1 of the socket XS1 is connected with the anode of a diode V3, and a battery is connected between the pin 1 of the socket XS1 and the anode of the diode V3; pin 2 of socket XS1 is grounded; a capacitor C1 and a capacitor C2 are connected in parallel between the pin 2 of the socket XS1 and the cathode of the diode V3; and a jumper switch is arranged on a connecting circuit of the capacitor C1 and the cathode of the diode V3.
Further, as shown in fig. 5, the battery plugging detection circuit includes a voltage detection chip V722 and a diode V3; a pin 3 of the voltage detection chip V722 is connected with the battery, and the pin 3 of the voltage detection chip V722 is a VIN pin of the voltage detection chip V722; pin 2 of the voltage detection chip V722 is grounded, and pin 2 of the voltage detection chip V722 is a VSS pin of the voltage detection chip V722; a pin 1 of the voltage detection chip V722 is connected with the anode of the diode V35, and a pin 1 of the voltage detection chip V722 is a pin VOUT of the voltage detection chip V722; the cathode of the diode V35 is connected with an IO interface of the MCU control assembly, and the detected signal is transmitted to the MCU control assembly.
Further, as shown in fig. 6, the battery activation and capacity detection circuit includes a CHECK-BAR1 control terminal, a triode V10, a triode V13, a resistor R30, a resistor R32, and a resistor R43; the emitter of the triode V10 is connected with the anode of the battery, the collector of the triode V10 is connected with the resistor R32, the resistor R32 is connected with the resistor R43 in series, the resistor R43 is connected with the emitter of the triode V13, the emitter of the triode V13 is grounded, the collector of the triode V13 is connected with the resistor R30, the other end of the resistor R30 is connected with the base of the triode V10, the base of the triode V13 is connected with the CHECK-BAR1 control end, the CHECK-BAR1 control end is connected with the MCU control component and used for transmitting signals to the MCU control component, an A/D converter is connected between the resistor R32 and the resistor R43 to obtain the voltage value of the battery, wherein the model of the triode V10 is LMBT4403, and the model of the triode V13 is LMBT4401LT1G.
Further, as shown in fig. 7, the power supply real-time power supply capability detection circuit includes a CHECK-BAR control end, a triode V1, a triode V5, a resistor R1, a resistor R5, and a resistor R8; the emitting electrode of the triode V1 is connected with the positive electrode of the battery, the collecting electrode of the triode V1 is connected with the resistor R1, the resistor R1 is connected with the resistor R8 in series, the resistor R8 is connected with the emitting electrode of the triode V5, the emitting electrode of the triode V5 is grounded, the collecting electrode of the triode V5 is connected with the resistor R5, the other end of the resistor R5 is connected with the base electrode of the triode V1, the base electrode of the triode V5 is connected with the CHECK-BAR control end, the CHECK-BAR control end is connected with the MCU control component and used for transmitting signals to the MCU control component, and an A/D converter is connected between the resistor R1 and the resistor R8 to obtain the voltage value of the power supply system. Wherein the model of the tertiary tube V1 is LMBT4403, and the model of the tertiary tube V5 is LMBT4401LT1G.
Example 2:
furthermore, as shown in fig. 3, the present invention further provides a management method for a power supply system of a water meter, including the following steps:
step one, judging whether a battery is powered on or powered off when being unplugged: detecting whether the battery is powered on or powered off through a battery plug detection circuit, and if the battery is powered on, performing battery activation and capacity detection; if the power is cut off, the instantaneous power supply capability of the power supply is detected, and the water meter data storage and valve closing operation are performed by using the electricity of the capacitor.
Step two, activating a battery; in the first step, after the battery is powered on, the battery is activated through a battery activation and capacity detection circuit, and the passivation of the lithium zinc batteries is firstly eliminated so as to activate the battery;
step three: detecting the battery capacity: after the second step is completed, battery capacity detection is carried out, the battery capacity is confirmed, whether the battery capacity is qualified or not is judged, the water meter is ready to start working if the battery capacity is qualified, and the water meter enters a standby state if the battery capacity is unqualified;
step four, detecting the real-time power supply capacity of the power supply: the power supply capacity of the power supply is monitored at regular time in the working and running process of the water meter, and the smooth execution of the daily operation of the water meter, the opening and closing of valves, communication and other heavy current actions is ensured.
Further, as shown in the circuit diagram of fig. 5, the cathode of the diode V35 is POWER-DOWN, and the POWER-DOWN in the circuit diagram is connected to the IO interface of the MCU control component, in the first step, an interrupt method is adopted to meet the requirements of the water meter for quickly detecting POWER failure to perform various data processing and anti-interference processing and the requirement of micro POWER consumption to ensure the working life of the battery, specifically, the water meter is in a micro POWER consumption sleep state at ordinary times to ensure the working life of the battery; when power failure occurs, interruption is generated, a power failure event is quickly detected, and various data processing and anti-interference processing are performed.
Further, in the second step, the battery is activated at fixed time intervals as a cycle, according to the battery discharge curve, the power supply, the triode V10, the resistor R32 and the resistor R43 form a heavy-load current discharge loop through the CHECK-BAR1 control of the circuit shown in fig. 6, the discharge loop is formed through the fixed resistor, the battery is activated for a fixed time through continuous discharge, and the battery power shortage is prevented from being mistakenly reported.
Further, in the third step, at a fixed time after the battery activation is completed each time, the same heavy-load current discharge loop of the battery is activated to discharge, a discharge loop is formed through a fixed resistor, and a battery voltage value is obtained through A/D conversion in the discharge process, so that the real capacity of the battery is judged according to the discharge curve of the battery, if the capacity of the battery is qualified, the fourth step is carried out, and if the capacity of the battery is unqualified, data is stored, a valve is closed, and the valve enters a standby state.
Further, in the fourth step, referring to fig. 3, after the battery capacity detection in the third step is completed, if the battery capacity is qualified, performing real-time power supply capacity detection on the power supply, and determining whether the detection time of the second period or the detection time of the first period is reached, if the detection time of the second period is reached, regularly monitoring the battery voltage value by using the first period in the normal operation process of the water meter, wherein the first period is a slow period, the range of the slow period can be 2 s-5 s, and regularly monitoring the battery voltage value by using a slow period such as 5s in the daily operation process of the water meter, so as to ensure the normal operation of the water meter; if the detection time of the first period is up, the water meter detects the voltage value of the battery at the second period at regular time when executing heavy current action, the second period is a fast period, the range of the fast period can be 250-300 ms, when executing heavy current action, such as opening and closing a valve and communication, the voltage value of the battery is monitored at regular time at a fast period, such as 250ms, if the voltage is too low, the heavy current action needs to be stopped, the voltage of the power supply is ensured not to be pulled across, MCU control reset or the water meter is caused to be abnormal in operation, in the power supply real-time power supply capacity detection circuit shown in fig. 7, through CHECK-BAR control, the power supply, the tertiary tube V1, the resistors R1 and R8 form a light load loop, the voltage value of the power supply is obtained through A/D conversion, the real-time power supply capacity is evaluated according to the voltage value, and the normal operation of the water meter is ensured.
The utility model provides a management method of water gauge power can carry out the battery and go up the electricity fast, and the battery activation, capacity detection and the detection of the real power supply ability of battery to the realization is to water gauge power effective management, and this management method can promote user's water experience, reduces the cost of changing the battery, has improved management level and managerial efficiency.
In addition, one kind installs as above water gauge electrical power generating system's water gauge, as shown in fig. 2, MCU control assembly includes MCU processing unit, with communication unit, LCD unit, power management control unit, water yield signal processing unit and the valve drive unit that MCU processing unit connects, be equipped with measurement sensor and valve on the water gauge, the drive of valve actuating mechanism valve switch, measurement sensor with water yield signal processing unit signal connection, valve actuating mechanism with valve drive unit signal connection, power management control unit connects the battery.
It should be understood that the above description of the embodiments of the present invention is only for illustrating the technical lines and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, but the present invention is not limited to the above specific embodiments. All changes and modifications within the scope of the claims should be covered by the protection scope of the present invention.
Claims (7)
1. A water meter power supply system is characterized by comprising an MCU control assembly, a power supply system, a battery plugging detection circuit, a battery activation and capacity detection circuit and a power supply real-time power supply capacity detection circuit, wherein the power supply system, the battery plugging detection circuit, the battery activation and capacity detection circuit and the power supply real-time power supply capacity detection circuit are in communication connection with the MCU control assembly; the MCU control assembly comprises an MCU processing unit, and a communication unit, an LCD unit, a power management control unit, a water quantity signal processing unit and a valve driving unit which are connected with the MCU processing unit.
2. A water meter power system as claimed in claim 1, wherein said power supply system comprises a socket XS1, a battery, a capacitor C1, a capacitor C2 and a diode V3;
the pin 1 of the socket XS1 is connected with the anode of the diode V3, and the battery is connected between the pin 1 of the socket XS1 and the anode of the diode V3;
the pin 2 of the socket XS1 is grounded;
a capacitor C1 and a capacitor C2 are connected in parallel between the pin 2 of the socket XS1 and the cathode of the diode V3;
and a jumper switch is arranged on a connecting circuit of the capacitor C1 and the cathode of the diode V3.
3. A water meter power supply system as claimed in claim 2, wherein said battery plugging detection circuit includes a voltage detection chip V722 and a diode V3;
the pin 3 of the voltage detection chip V722 is connected with the battery;
the 2 pin of the voltage detection chip V722 is grounded;
the 1 pin of the voltage detection chip V722 is connected with the anode of the diode V35;
and the cathode of the diode V35 is connected with an IO interface of the MCU control assembly.
4. The water meter power system of claim 1, wherein the battery activation and capacity detection circuit comprises a CHECK-BAR1 control terminal, a transistor V10, a transistor V13, a resistor R30, a resistor R32, and a resistor R43;
the emitting electrode of triode V10 is connected with the positive electrode of the battery, the collecting electrode of triode V10 is connected with resistor R32, resistor R32 is connected with resistor R43 in series, resistor R43 is connected with the emitting electrode of triode V13, the emitting electrode of triode V13 is grounded, the collecting electrode of triode V13 is connected with resistor R30, the other end of resistor R30 is connected with the base electrode of triode V10, the base electrode of triode V13 is connected with the CHECK-BAR1 control end, the CHECK-BAR1 control end is connected with the MCU control assembly, and an A/D converter is connected between resistor R32 and resistor R43 to obtain the voltage value of the battery.
5. The water meter power system of claim 1, wherein the power real-time supply capability detection circuit comprises a CHECK-BAR control terminal, a transistor V1, a transistor V5, a resistor R1, a resistor R5, and a resistor R8;
the emitting electrode of the triode V1 is connected with the positive electrode of the battery, the collecting electrode of the triode V1 is connected with the resistor R1, the resistor R1 is connected with the resistor R8 in series, the resistor R8 is connected with the emitting electrode of the triode V5, the emitting electrode of the triode V5 is grounded, the collecting electrode of the triode V5 is connected with the resistor R5, the other end of the resistor R5 is connected with the base electrode of the triode V1, the base electrode of the triode V5 is connected with the CHECK-BAR control end, the CHECK-BAR control end is connected with the MCU control component, and an A/D converter is connected between the resistor R1 and the resistor R8 to obtain the voltage value of the power supply system.
6. A water meter incorporating a water meter power supply system as claimed in any one of claims 1 to 5, wherein said water meter is provided with a metering sensor and a valve, a valve drive mechanism drives said valve switch, said metering sensor is in signal communication with said water volume signal processing unit, and said valve drive mechanism is in signal communication with said valve drive unit.
7. A water meter of a water meter power system as claimed in claim 6, wherein said power management control unit is connected to a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221867328.XU CN218099980U (en) | 2022-07-20 | 2022-07-20 | Water meter power supply system and water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221867328.XU CN218099980U (en) | 2022-07-20 | 2022-07-20 | Water meter power supply system and water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218099980U true CN218099980U (en) | 2022-12-20 |
Family
ID=84483377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221867328.XU Active CN218099980U (en) | 2022-07-20 | 2022-07-20 | Water meter power supply system and water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218099980U (en) |
-
2022
- 2022-07-20 CN CN202221867328.XU patent/CN218099980U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020253417A1 (en) | Lorawan-based electric transmission line monitoring device and system | |
| CN207020287U (en) | A kind of battery failures monitor acquisition module | |
| CN113284332B (en) | Mining wireless sensing terminal | |
| CN218099980U (en) | Water meter power supply system and water meter | |
| CN115085332A (en) | Water meter power supply system and management method thereof | |
| CN101345425A (en) | Intelligentized battery charge control circuit | |
| CN111146853A (en) | Wireless sensor with vibration energy recovery function and data transmission method thereof | |
| CN215730143U (en) | Novel calling at home device | |
| CN211207143U (en) | L oRa-based bridge monitoring strain sensor | |
| CN209895153U (en) | Intelligent motor-pumped well control device | |
| CN208888611U (en) | A kind of super low-power consumption control system based on wireless bidirectional communication | |
| CN207588523U (en) | A kind of intelligent charging system of VRLA accumulators | |
| CN202617059U (en) | Off-grid intelligent type fan controller | |
| CN110954823A (en) | Single CT charges and drop switch monitor terminal of sampling | |
| CN107512185B (en) | Intelligent electric power-assisted vehicle charger | |
| CN206291936U (en) | A kind of electrolyte liquid level detection device | |
| CN205790272U (en) | A kind of EMUs emergency starting power supply with remote monitoring function | |
| CN214479715U (en) | Automatic switching control circuit | |
| CN220691067U (en) | VTR storage battery on-line monitoring system | |
| CN211603464U (en) | Single CT charges and drop switch monitor terminal of sampling | |
| CN212905326U (en) | Excavator storage battery monitoring device and excavator | |
| CN213302379U (en) | Safe electric energy monitoring device capable of automatically detecting in set time period | |
| CN220673777U (en) | Outdoor gateway | |
| CN220074755U (en) | Intelligent reminding type electric shaver | |
| CN213754090U (en) | A stand-by power supply guarantee device for aquaculture environment controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |