CN221056644U - Handheld adjustable load device - Google Patents
Handheld adjustable load device Download PDFInfo
- Publication number
- CN221056644U CN221056644U CN202322656722.XU CN202322656722U CN221056644U CN 221056644 U CN221056644 U CN 221056644U CN 202322656722 U CN202322656722 U CN 202322656722U CN 221056644 U CN221056644 U CN 221056644U
- Authority
- CN
- China
- Prior art keywords
- control unit
- load device
- shell
- unit
- adjustable load
- 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
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 4
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 7
- 241000270722 Crocodylidae Species 0.000 claims description 3
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 claims description 3
- 238000012795 verification Methods 0.000 abstract description 6
- 230000007935 neutral effect Effects 0.000 description 4
- 241000270728 Alligator Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a handheld adjustable load device, which comprises a shell, wherein a key is arranged on the shell, a circuit board is arranged in the shell, an embedded control unit, a temperature acquisition unit, a power management unit, a key input processing unit, an analog quantity acquisition unit, a load power control unit, a display processing unit, an alarm control unit and an indicator lamp control unit are arranged on the circuit board, the temperature acquisition unit, the power management unit, the key input processing unit, the analog quantity acquisition unit, the load power control unit, the display processing unit, the alarm control unit and the indicator lamp control unit are connected with the embedded control unit through serial communication, and the key is connected with the key input processing unit. According to the utility model, the load can be connected in series into the electric energy meter loop, the load of a user is simulated, the verification problem of the electric energy meter when the user does not have the load is solved, the load can be adjusted in multiple steps by selecting the keys, and the flexibility of the device in use is improved.
Description
Technical Field
The utility model relates to the field of power equipment, in particular to a handheld adjustable load device.
Background
In the field of meter measurement and verification, a load is required to be temporarily added during meter verification, but a new meter is usually not loaded, and some modified electric appliances are usually used as temporary loads on site, so that certain potential safety hazards exist. In the field of anti-electricity-theft, a few lawbreakers steal electricity through changing an electric energy meter metering loop, so that power supply enterprises suffer loss, in practice, the electricity-theft behavior of wiring in front of the meter around the metering device is found easily, the electric energy meter metering mode is changed, the mode of few metering of live wire current is not found easily, difficulty is brought to the inspection of the line loss of a station area, and the inspection efficiency of the line loss of the station area is improved.
Disclosure of utility model
Therefore, the technical problem to be solved by the utility model is to solve the verification problem of the electric energy meter in the prior art when the electric energy meter is not under load during verification.
In order to solve the technical problems, the utility model provides a handheld adjustable load device, which comprises a shell, wherein a key is arranged on the shell, a circuit board is arranged in the shell, an embedded control unit, a temperature acquisition unit, a power management unit, a key input processing unit, an analog acquisition unit, a load power control unit, a display processing unit, an alarm control unit and an indicator light control unit are arranged on the circuit board, the temperature acquisition unit, the power management unit, the key input processing unit, the analog acquisition unit, the load power control unit, the display processing unit, the alarm control unit and the indicator light control unit are connected with the embedded control unit through serial communication, and the key is connected with the key input processing unit.
In one embodiment of the utility model, an electronic display screen, a function indicator light and keys are arranged on the shell panel, the electronic display screen is connected with the display processing unit, the function indicator light is connected with the indicator light control unit, and the keys are connected with the key input processing unit. The electronic display screen can display real-time information such as voltage, current, power and the like, and can realize A/D conversion;
in one embodiment of the present utility model, the indicator lights include a status indicator light, a power parameter indicator light, a time parameter indicator light, and a start/end indicator light for displaying various status changes.
In one embodiment of the utility model, the keys include a power setting key, a time setting key, and a start/stop key for enabling selection of load power and duration.
In one embodiment of the utility model, the housing is provided with a terminal block comprising three live and one neutral terminals.
In one embodiment of the utility model, the live and neutral terminals are connected to the meter under test by alligator clip connection wires or probe contacts.
In one embodiment of the present utility model, the load power control unit includes three load output control circuits, the load output control circuits include a diode, a triode, a first resistor, a second resistor, a third resistor and a relay, a collector of the triode is connected with a positive electrode of the diode and a coil of the relay, the diode and the relay are arranged in parallel, and the first resistor is connected with a normally open contact of the relay; the base electrode of the triode is connected with the second resistor, and a third resistor is connected in series between the emitter electrode and the base electrode of the triode.
In one embodiment of the utility model, a heat dissipation module is arranged on the back of the shell, and the heat dissipation module is connected with the embedded control unit. When the temperature acquired by the components reaches a certain height, the heat dissipation module transmits a signal to the embedded control unit, and the embedded control unit controls the heat dissipation module to automatically start heat dissipation; the heat dissipation module may be a heat dissipation fan.
In one embodiment of the utility model, the back of the housing is rotatably provided with a support block. The supporting block is convenient to put and support and is changed into a handheld adjustable load device, so that the reading is convenient to observe.
In one embodiment of the utility model, the portable electronic device further comprises a handheld end expansion module, wherein the handheld end expansion module comprises a sliding groove arranged on the shell and an expansion handle capable of being pulled in the sliding groove.
Compared with the prior art, the technical scheme of the utility model has at least the following advantages:
According to the handheld adjustable load device, loads can be connected in series into the electric energy meter loop, the load of a user is simulated, the meter verification problem of the electric energy meter when the user does not have the load is solved, the load can be adjusted in multiple steps through the selection of keys, and the flexibility of the device in use is improved.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which,
FIG. 1 is a schematic front view of a hand-held adjustable load device in accordance with a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of the back side structure of the hand held adjustable load device shown in FIG. 1;
FIG. 3 is a schematic end view of the handheld adjustable load device of FIG. 1;
FIG. 4 is a schematic diagram of the circuit die connections of the handheld adjustable load device shown in FIG. 1;
FIG. 5 is a circuit diagram of a load power control unit of the handheld adjustable load device shown in FIG. 4;
Description of the specification reference numerals: 1. a housing; 2. an electronic display screen; 3. a function indicator light; 4. a key; 41. a power setting key, 42, a time setting key; 43. a start/stop key; 6. a support block; 7. a handheld end expansion module; 8. a live wire terminal; 9. a neutral terminal; 11. an embedded control unit; 12. a temperature acquisition unit; 13. a power management unit; 14. a key input processing unit; 15. the analog quantity acquisition unit, 16, load power control unit; 17. a heat dissipation module; 18. a display processing unit; 19. an alarm control unit; 110. and an indicator light control unit.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
In order to better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to the drawings in the specification and a specific test mode.
Examples
Referring to fig. 1, the handheld adjustable load device of the utility model comprises a shell 1, wherein a key 4 is arranged on the shell 1, and the shell 1 adopts an insulation design, has high strength and has insulation characteristics; the shell 1 is internally provided with a circuit board, and the circuit board is provided with an embedded control unit 11, a temperature acquisition unit 12, a power management unit 13, a key input processing unit 14, an analog acquisition unit 15, a load power control unit 16, a display processing unit 18, an alarm control unit 19 and an indicator lamp control unit 110 which are in serial communication connection with the embedded control unit 11.
Preferably, an electronic display screen 2, a function indicator lamp 3 and keys 4 are arranged on the panel of the shell 1, the electronic display screen 2 is connected with the display processing unit 1, the function indicator lamp 3 is connected with the indicator lamp control unit 110, and the keys 4 are connected with the key input processing unit 14. The electronic display screen 2 can display real-time voltage, current, power and other information, and can realize A/D conversion; preferably, the indicator lamp 3 includes a status indicator lamp, a power parameter indicator lamp, a time parameter indicator lamp, and a start/end indicator lamp, for displaying various status changes. And, the keys 4 include a power setting key 41, a time setting key 42, and a start/stop key 43 for realizing selection of load and duration.
In addition, the housing 1 is provided with connection terminals, which include three live wire terminals 8 and a neutral wire terminal 9. And the live wire terminal 8 and the zero wire terminal 9 are connected with the electric energy meter to be tested through crocodile clip connecting wires or probe contacts. The crocodile clamp connecting wire or the mode design of the probe contact can improve the detection efficiency of the electric energy meter of the same type and meet different requirements on site.
In this embodiment, the distance between the two probe contacts on the housing 1 is consistent with the distance between the connecting terminals of the electric energy meter, and when the electric energy meter is detected, the two probe contacts are directly detected to be contacted and measured, so that the electric energy meter is convenient and quick, and the working efficiency is greatly improved.
As shown in fig. 3, the load power control unit 16 includes three load output control circuits including a diode D1, a triode Q1, a first resistor R1, a second resistor R2, a third resistor R3, and a relay K1, wherein a collector of the triode Q1 is connected with an anode of the diode D1 and a coil of the relay, and the coils of the diode D1 and the relay K1 are arranged in parallel, and the first resistor is connected with a normally open contact of the relay K1; the base electrode of the triode is connected with the second resistor Q1, and a third resistor R3 is connected in series between the emitter electrode and the base electrode of the triode Q1.
The resistance value of the third resistor R3 of the three load output control circuits in this embodiment is adjustable, so that different load outputs of the load power control unit 16 can be realized; by pressing the power setting key 41 on the casing 1, the key input processing unit 14 receives the signal of the power setting key 41 and transmits the signal to the embedded control unit 11, and the embedded control unit 11 controls and selects the coil of the relay K1 on the corresponding load output control circuit to be electrified, so that the public end of the relay K1 is closed with the normally open contact, further the load is adjustable, and the problem that a new user is free from load is solved. Preferably, the power setting key 41 selects three-gear power adjustment, the power setting key 41 is pressed once, and the embedded control unit 11 controls the selection of the first load output control circuit to output independently; pressing twice, the embedded control unit 11 controls the selection of the output of the second load output control circuit; pressing three times, the embedded control unit 11 controls the selection of the third load output control circuit output.
As shown in fig. 2, a heat dissipation module 17 is disposed on the back of the housing 1, and the heat dissipation module 17 is connected to the embedded control unit 11. The temperature acquisition unit 12 acquires the working temperature inside the equipment in real time, automatically starts the heat dissipation module 17 to dissipate heat after the temperature reaches the heat dissipation temperature, cuts off output after the temperature reaches the on-line threshold value, and gives an audible and visual alarm. When the temperature of the radiating module 17 acquired by the components reaches a certain height, transmitting a signal to the embedded control unit 11, and controlling the radiating module 17 to automatically start radiating by the embedded control unit 11; the heat dissipation module 17 may be a heat dissipation fan. The back of the shell 1 is rotatably provided with a supporting block 6. The supporting block 6 is convenient for placing and supporting and is changed into a handheld adjustable load device, so that the reading is convenient to observe. Also included is a hand-held end extension module 7, the hand-held end extension module 7 comprising a chute 71 provided on the housing 1 and an extension handle 72 that is retractable within the chute 71. The extension handle 72 can be pulled in the chute 71 for use, so that the operation and use of the extension handle by hand-held operators on site are facilitated.
When the device is used for checking the electric energy meter, one of the live wire terminal 8 and the zero wire terminal 9 of the handheld adjustable load device is in contact connection with the live wire output terminal and the zero wire output terminal of the single-phase electric energy meter to be tested through a probe contact or an alligator clip, the machine is started to be in a standby state by pressing a start/stop button 43, the required output power is selected by pressing a power setting button 41, the required output time is selected by a time setting button 42, the load power output is started by pressing the start/stop button 43, and the load power output is stopped when the time countdown is 0; at the moment, the actual numerical value on the electric energy meter is checked and compared with the numerical value of the electronic display screen 2 of the handheld adjustable load device, and if the numerical value on the electric energy meter is smaller than the data of the electronic display screen 2, the electric larceny suspicion exists.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A handheld adjustable load device, characterized in that: the intelligent control device comprises a shell, wherein a key is arranged on the shell, a circuit board is arranged in the shell, an embedded control unit, a temperature acquisition unit, a power management unit, a key input processing unit, an analog acquisition unit, a load power control unit, a display processing unit, an alarm control unit and an indicator light control unit are arranged on the circuit board, and the embedded control unit is connected with the embedded control unit through serial communication, and the key is connected with the key input processing unit.
2. A hand-held adjustable load device according to claim 1, wherein: the electronic display screen is connected with the display processing unit, the function indicator lamp is connected with the indicator lamp control unit, and the keys are connected with the key input processing unit.
3. A hand-held adjustable load device according to claim 2, characterized in that: the indicator lights include status indicator lights, power parameter indicator lights, time parameter indicator lights, and start/end indicator lights.
4. A hand-held adjustable load device according to claim 3, wherein: the keys include a power setting key, a time setting key, and a start/stop key.
5. A hand-held adjustable load device according to claim 4, wherein: the shell is provided with a wiring terminal, and the wiring terminal comprises three live wire terminals and a zero wire terminal.
6. A hand-held adjustable load device according to claim 5, wherein: and the live wire terminal and the zero wire terminal are connected with the electric energy meter to be tested through crocodile clip connecting wires or probe contacts.
7. A hand-held adjustable load device according to claim 1, wherein: the load power control unit comprises three load output control circuits, wherein each load output control circuit comprises a diode, a triode, a first resistor, a second resistor, a third resistor and a relay, the collector of each triode is connected with the anode of the diode and the coil of the relay, the diode and the relay are arranged in parallel, and the first resistor is connected with a normally open contact of the relay; the base electrode of the triode is connected with the second resistor, and a third resistor is connected in series between the emitter electrode and the base electrode of the triode.
8. A hand-held adjustable load device according to claim 1, wherein: the back of the shell is provided with a heat dissipation module which is connected with the embedded control unit.
9. A hand-held adjustable load device according to claim 1, wherein: the back of the shell is rotatably provided with a supporting block.
10. A hand-held adjustable load device according to claim 1, wherein: the portable electronic device further comprises a handheld end expansion module, wherein the handheld end expansion module comprises a sliding groove arranged on the shell and an expansion handle capable of being pulled in the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656722.XU CN221056644U (en) | 2023-09-28 | 2023-09-28 | Handheld adjustable load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322656722.XU CN221056644U (en) | 2023-09-28 | 2023-09-28 | Handheld adjustable load device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221056644U true CN221056644U (en) | 2024-05-31 |
Family
ID=91223820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322656722.XU Active CN221056644U (en) | 2023-09-28 | 2023-09-28 | Handheld adjustable load device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221056644U (en) |
-
2023
- 2023-09-28 CN CN202322656722.XU patent/CN221056644U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107462412B (en) | Mechanical property instrument for handcart switch integrated test | |
| CN221056644U (en) | Handheld adjustable load device | |
| CN207937500U (en) | A kind of touch screen type multimeter | |
| CN111077444B (en) | General test equipment for contactor and relay | |
| CN212160011U (en) | Universal test equipment for contactor and relay | |
| CN205176256U (en) | Single -phase smart electric meter testing arrangement | |
| CN210323339U (en) | Secondary circuit tester | |
| CN217034170U (en) | Portable relay automatic check platform | |
| CN115656807A (en) | Automatic checking device for relay | |
| Muhammed et al. | Design and implementation of an IoT based home energy monitoring system | |
| CN213517457U (en) | Convenient detection circuitry of relay power and device | |
| CN2304130Y (en) | D. C. resistance detecting instrument | |
| CN210573652U (en) | Server power-off device | |
| CN113866483A (en) | Automatic checking method and system for secondary voltage of transformer substation | |
| CN113281602A (en) | Intelligent terminal hardware interface detection system and detection method thereof | |
| CN210536949U (en) | Loudspeaker power test control instrument | |
| CN220491221U (en) | Control circuit capable of automatically adjusting test temperature | |
| CN110161420A (en) | A kind of fuel cell car block terminal detection circuit and detection device | |
| CN217156766U (en) | Car lamp lighting test system based on high-precision voltage and current double-display meter | |
| CN212159892U (en) | DC offset tester | |
| CN208060674U (en) | Heavy duty detergent relay calibration table | |
| CN210376637U (en) | Testing device for power supply component | |
| CN204758739U (en) | Direct current return circuit error detection ware | |
| CN216310171U (en) | Alternating current withstand voltage test device | |
| CN219475739U (en) | Energy-saving alternating-current charging pile aging equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |