CN210863907U - Control device for measuring electrical parameters of electric appliance load - Google Patents
Control device for measuring electrical parameters of electric appliance load Download PDFInfo
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- CN210863907U CN210863907U CN201921558103.4U CN201921558103U CN210863907U CN 210863907 U CN210863907 U CN 210863907U CN 201921558103 U CN201921558103 U CN 201921558103U CN 210863907 U CN210863907 U CN 210863907U
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- 238000012545 processing Methods 0.000 claims abstract description 121
- 239000004065 semiconductor Substances 0.000 claims abstract description 99
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 33
- 230000004913 activation Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an electric appliance load electrical parameter measuring controlling means, produce unit, voltage detection circuit, current detection circuit, semiconductor switch unit and/or a relay switch unit including processing unit, voltage zero-crossing circuit, actuating signal. The semiconductor switch unit has a semiconductor switch off delay time and a semiconductor switch off delay time. The relay switch unit has a relay contact closed delay time and a relay contact open delay time. When the processing unit receives the actuating signal generated by the actuating signal generating unit, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit and/or the relay contact according to the synchronous signal, the closed circuit delay time of the semiconductor switch, the open circuit delay time of the semiconductor switch, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact through the control signal, and accordingly at least one electrical parameter of the electrical appliance load is measured.
Description
Technical Field
The utility model relates to an electrical load control circuit's design especially relates to an electrical load electrical parameter measuring controlling means.
Background
In the electrical parameter measurement technology of electrical loads, in order to measure electrical parameters between a power source and an electrical load, various different measurement devices (such as a voltmeter, an ammeter, a power meter, a phase detection meter, etc.) are generally required to achieve the purpose of measurement for a specific measurement function.
For the current commonly used power meter, the function of the power meter can be used as a measuring device for various parameters of alternating current and direct current, but if the closed/open circuit (ON/OFF) phase angle of an electronic product is required to be tested to be controllable, the In-rush current (In-rush) is required to be measured, the Hold time for shutdown (Hold up time), the ON/OFF Sequence (ON/OFF Sequence) and the cycle of the cycle ON/OFF program (Cycling) and the like, the traditional power meter must be matched with other devices or equipment to have the functions. Therefore, for developers, manufacturers, and test manufacturers of electronic devices, it is inconvenient and costly to configure the electronic devices.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a controllable electrical apparatus load electrical parameter measuring controlling means promptly. The utility model discloses the circuit subassembly that combines semiconductor switch unit and/or relay switch unit and collocation can reach each item test function that has alternating current-direct current each item parameter measurement and electrical products.
The utility model discloses the technical means who adopts includes a processing unit, a voltage zero-crossing circuit, an actuating signal produces unit, a voltage detection circuit, a current detection circuit, a semiconductor switch unit and/or a relay switch unit. The semiconductor switch unit has a semiconductor switch on delay time and a semiconductor switch off delay time. The relay switch unit has a relay contact closed delay time and a relay contact open delay time. When the processing unit receives the actuating signal generated by the actuating signal generating unit, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit and/or the relay contact according to the synchronous signal, the closed circuit delay time of the semiconductor switch, the open circuit delay time of the semiconductor switch, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact through a control signal, so as to measure at least one electrical parameter of the electrical load.
An embodiment of the utility model provides an electrical load electrical parameter measurement's controlling means, include:
the processing unit is provided with an actuating signal input end, a synchronous signal input end and a first control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a semiconductor switch unit connected in series between the AC power supply and the electrical load, the semiconductor switch unit having a semiconductor switch closed-circuit delay time and a semiconductor switch open-circuit delay time, the closed circuit or open circuit of the semiconductor switch unit being controlled by a first control signal generated by the first control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit through the first control signal generated by the first control signal output end according to the synchronous signal, the closed circuit delay time of the semiconductor switch and the open circuit delay time of the semiconductor switch.
In one embodiment, the apparatus further comprises a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the ac power source supplied to the electrical load.
In one embodiment, the apparatus further includes a transmission interface connected to the processing unit for transmitting the at least one electrical parameter through the transmission interface.
In one embodiment, the semiconductor switch unit includes at least one semiconductor element, the at least one semiconductor element is connected in series between the ac power source and the electrical load, and a gate of the at least one semiconductor element is connected to the first control signal output terminal of the processing unit.
The embodiment of the utility model provides a still provide an electrical load electrical parameter measuring controlling means, include:
the processing unit is provided with an actuating signal input end, a synchronous signal input end and a second control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a relay switch unit connected in series between the AC power supply and the electrical load, the relay switch unit having a relay contact closed circuit delay time and a relay contact open circuit delay time, the closed circuit or open circuit of the relay switch unit being controlled by a second control signal generated by the second control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the relay contact according to the second control signal generated by the second control signal output end and the synchronous signal, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact, and at least one electrical parameter of the electrical load is measured.
In one embodiment, the apparatus further comprises a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the ac power source supplied to the electrical load.
In one embodiment, the apparatus further includes a transmission interface connected to the processing unit for transmitting the at least one electrical parameter through the transmission interface.
In one embodiment, the relay switch unit includes:
a relay contact connected in series between the AC power source and the electrical load;
a relay coil coupled to the relay contact;
and a transistor connected to the relay coil, wherein a base of the transistor is connected to the second control signal output end of the processing unit.
The embodiment of the utility model provides a still provide an electrical load electrical parameter measuring controlling means, include:
the processing unit is provided with an actuating signal input end, a synchronous signal input end, a first control signal output end and a second control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a semiconductor switch unit connected in series between the AC power supply and the electrical load, the semiconductor switch unit having a semiconductor switch closed-circuit delay time and a semiconductor switch open-circuit delay time, the closed circuit or open circuit of the semiconductor switch unit being controlled by a first control signal generated by the first control signal output terminal of the processing unit;
a relay switch unit connected in series between the AC power supply and the electrical load, the relay switch unit having a relay contact closed circuit delay time and a relay contact open circuit delay time, the closed circuit or open circuit of the relay switch unit being controlled by a second control signal generated by the second control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit through the first control signal generated by the first control signal output end according to the synchronous signal, the closed circuit delay time of the semiconductor switch and the open circuit delay time of the semiconductor switch;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the relay contact according to the second control signal generated by the second control signal output end and the synchronous signal, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact, and at least one electrical parameter of the electrical load is measured.
In one embodiment, the apparatus further comprises a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the ac power source supplied to the electrical load.
In one embodiment, the apparatus further includes a transmission interface connected to the processing unit for transmitting the at least one electrical parameter through the transmission interface.
In one embodiment, the semiconductor switch unit includes at least one semiconductor element, the at least one semiconductor element is connected in series between the ac power source and the electrical load, and a gate of the at least one semiconductor element is connected to the first control signal output terminal of the processing unit.
In one embodiment, the relay switch unit includes:
a relay contact connected in series between the AC power source and the electrical load;
a relay coil coupled to the relay contact; and a transistor connected to the relay coil, wherein a base of the transistor is connected to the second control signal output end of the processing unit.
In the aspect of the effect, the utility model discloses but wide use is in the test of various electrical apparatus load electrical parameter. The utility model discloses an actuating signal, synchronizing signal, semiconductor switch or relay contact closed circuit delay time, open circuit delay time to the closed circuit or the open circuit state of controlling this semiconductor switch unit and/or relay contact, according to the measurement demand of different functions such as the steerable of electronic product closed circuit/open circuit (ON/OFF) phase angle, start surge current (In-rush), shut down Hold time (Hold up time), start shutdown procedure (ON/OFF Sequence) and circulation start shutdown procedure circulation (Cycling).
The present invention will be further described with reference to the following embodiments and accompanying drawings.
Drawings
Fig. 1 shows a block diagram of a control device for measuring electrical parameters of an electrical load according to a first embodiment of the present invention.
Fig. 2 shows a waveform diagram of related signals in a circuit block diagram of the first embodiment of the present invention shown in fig. 1.
Fig. 3 is a diagram showing waveforms of signals in the circuit block diagram of the first embodiment of the present invention shown in fig. 1.
Fig. 4 shows a block diagram of a control device for measuring electrical parameters of an electrical load according to a second embodiment of the present invention.
Fig. 5 is a diagram showing waveforms of signals related to a circuit block diagram of a second embodiment of the present invention shown in fig. 4.
Fig. 6 is a diagram showing waveforms of signals in a circuit block diagram of a second embodiment of the present invention shown in fig. 4.
Fig. 7 shows a block diagram of a control device for measuring electrical parameters of an electrical load according to a third embodiment of the present invention.
Fig. 8 shows a waveform diagram of related signals in a circuit block diagram of a third embodiment of the present invention shown in fig. 7.
Fig. 9 shows a waveform diagram of related signals in the circuit block diagram of the third embodiment of the present invention shown in fig. 7.
Reference numerals
1 electric appliance load electrical parameter measuring control device
11 processing unit
12 actuating signal generating unit
13 voltage zero-crossing circuit
14 voltage detection circuit
15 current detection circuit
151 series resistance
16 display device
17 transport interface
2 electric appliance load
3 semiconductor switch unit
31. 32 semiconductor element
33 grid electrode
4 relay switch unit
41 Relay contact
42 relay coil
43 transistor
44 base electrode
ACV alternating current power supply
K1 semiconductor switch cell state
K2 Relay contact status
p1 actuating signal input terminal
p2 synchronization signal input terminal
p31 first control signal output terminal
p32 second control signal output terminal
I current value
Value of V voltage
Vo output voltage
Vsync synchronization signal
W1, W2 lead wire
s1 actuating signal
s31 first control signal
s32 first control signal
time of t period
t1 semiconductor switch closed delay time
t2 semiconductor switch open circuit delay time
t3 relay contact closed circuit delay time
t4 relay contact open circuit delay time
Detailed Description
Referring to fig. 1, a circuit block diagram of a control device for measuring electrical load parameters of an electrical appliance according to a first embodiment of the present invention is shown. The control device 1 of the present invention comprises a processing unit 11 having an actuating signal input terminal p1, a synchronization signal input terminal p2, and a first control signal output terminal p 31.
An actuating signal generating unit 12 connected to the processing unit 11 for generating an actuating signal s1 to the actuating signal input p1 of the processing unit 11.
A zero-crossing voltage circuit 13 is connected to an ac power source ACV for detecting a power source zero-crossing point of the ac power source ACV at each period time t, and sending a synchronization signal Vsync to the synchronization signal input terminal p2 of the processing unit 11 at each power source zero-crossing point.
A voltage detecting circuit 14 is connected to an electrical load 2 for detecting the voltage supplied by the ac power source ACV to the electrical load 2 via the wires W1 and W2, and generating a voltage value V to be transmitted to the processing unit 11.
A current detection circuit 15, which includes a series resistor 151 connected to one of the wires W2 between the ac power source ACV and the electrical load 2, is used to detect the current supplied to the electrical load 2 by the ac power source ACV and generate a current value I to be transmitted to the processing unit 11.
A display device 16 is connected to the processing unit 11 for displaying at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time supplied by the ac power source ACV to the electrical load 2.
A transmission interface 17 is connected to the processing unit 11, and the at least one electrical parameter is transmitted through the transmission interface 17.
A semiconductor switch unit 3 is connected in series to one of the wires W1 between the ac power source ACV and the electrical load 2, the semiconductor switch unit 3 has a semiconductor switch closing delay time t1 and a semiconductor switch opening delay time t2, and the closing or opening of the semiconductor switch unit 3 is controlled by the first control signal output terminal p31 of the processing unit 11.
The semiconductor switching unit 3 comprises semiconductor elements 31, 32, the semiconductor elements 31, 32 are connected in series between the ac power source ACV and the electrical load 2, and the gates 33 of the semiconductor elements 31, 32 are connected to the first control signal output p31 of the processing unit 11.
Fig. 2 is a diagram showing a waveform diagram of a related signal in the circuit block diagram of the first embodiment of the present invention shown in fig. 1. When the activation signal input terminal p1 of the processing unit 11 receives the activation signal s1, the processing unit 11 sends a first control signal s31 to the semiconductor switch unit 3. After the thyristor 3 is turned off for the thyristor closed delay time t1 and the processing unit 11 receives the synchronization signal Vsync, the thyristor 3 is turned on (thyristor state K1), so that the ac power ACV is supplied to the electrical load 2 through the thyristor 3, thereby measuring at least one electrical parameter of the electrical load 2.
When the processing unit 11 no longer receives the activation signal s1, the processing unit 11 stops sending the first control signal s31 earlier than the semiconductor switch open delay time t2 before receiving the synchronization signal Vsync, and then after the semiconductor switch open delay time t2, the semiconductor switch unit 3 starts to open, so that the ac power source ACV stops being supplied to the electrical load 2.
Fig. 3 is a diagram showing a waveform diagram of related signals in the circuit block diagram of the first embodiment of the present invention shown in fig. 1. When the actuation signal input terminal p1 of the processing unit 11 receives the actuation signal s1 and the processing unit 11 receives the synchronization signal Vsync, the processing unit 11 sends a first control signal s31 to the semiconductor switch unit 3. After the semiconductor switch unit 3 has elapsed the semiconductor switch closing delay time t1, the semiconductor switch unit 3 starts to close (semiconductor switch state K1), so that the ac power source ACV supplies the output voltage Vo to the electrical load 2 through the semiconductor switch unit 3, thereby measuring at least one electrical parameter of the electrical load 2.
When the processing unit 11 no longer receives the activation signal s1, the processing unit 11 stops sending the first control signal s31 when receiving the synchronization signal Vsync, and then after the semiconductor switch open-circuit delay time t2, the semiconductor switch unit 3 starts to open the circuit, so that the ac power source ACV stops being supplied to the electrical load 2.
Fig. 4 is a block diagram of a control device for measuring electrical parameters of an electrical load according to a second embodiment of the present invention. The circuit composition of the present embodiment is substantially the same as that of the first embodiment, and therefore the same elements are designated by the same element numbers for correspondence. In this embodiment, a relay switch unit 4 is connected in series between the ac power source ACV and the electrical load 2, the relay switch unit 4 has a relay contact closing delay time t3 and a relay contact opening delay time t4, and the closing or opening of the relay switch unit 4 is controlled by the second control signal output terminal p32 of the processing unit 11.
The relay switch unit 4 includes a relay contact 41 connected in series to one of the wires W1 between the ac power source ACV and the electrical load 2; a relay coil 42 coupled to the relay contact 41; a transistor 43 is connected to the relay coil 42. The base 44 of the transistor 43 is connected to the second control signal output p32 of the processing unit 11.
Fig. 5 is a diagram showing a waveform diagram of a related signal in a circuit block diagram of a second embodiment of the present invention shown in fig. 4. When the actuating signal input terminal p1 of the processing unit 11 receives the actuating signal s1, the processing unit 11 sends a second control signal s32 to the relay switch unit 4. After the relay contact closing delay time t3 elapses and the processing unit 11 receives the synchronization signal Vsync, the relay contact 41 is closed (relay contact state K2), so that the ac power source ACV supplies the output voltage Vo to the electrical load 2 through the semiconductor switch unit 3, thereby measuring at least one electrical parameter of the electrical load 2.
When the processing unit 11 no longer receives the activation signal s1, the processing unit 11 stops sending the second control signal s32 earlier than the opening delay time t4 before receiving the synchronization signal Vsync, and then after the relay contact opening delay time t4, the relay contact 41 starts to open, so that the ac power source ACV stops being supplied to the electrical load 2.
Referring to fig. 6, it shows a waveform diagram of related signals in a circuit block diagram of a second embodiment of the present invention shown in fig. 4. When the actuating signal input terminal p1 of the processing unit 11 receives the actuating signal s1 and the processing unit 11 receives the synchronization signal Vsync, the processing unit 11 sends a second control signal s32 to the relay switch unit 4. After the relay contact closing delay time t3 of the relay switch unit 4, the relay contact 41 is closed (relay contact state K2), so that the ac power ACV is supplied to the electrical load 2 through the semiconductor switch unit 3, thereby measuring at least one electrical parameter of the electrical load 2.
When the processing unit 11 no longer receives the activation signal s1, the processing unit 11 stops sending the second control signal s32 when receiving the synchronization signal Vsync, and then after the relay contact opening delay time t4, the relay contact 41 starts to open, so that the ac power source ACV stops being supplied to the electrical load 2.
Fig. 7 is a block diagram showing a third embodiment of the control device for measuring electrical parameters of an electrical load according to the present invention. Fig. 8 shows a waveform diagram of related signals in a circuit block diagram of a third embodiment of the present invention shown in fig. 7. Fig. 9 shows a waveform diagram of related signals in the circuit block diagram of the third embodiment of the present invention shown in fig. 7. The circuit components of the present embodiment combine the aforementioned first and second embodiments, that is, in the present embodiment, a semiconductor switch unit 3 is connected in series to one of the wires W1 between the ac power source ACV and the electrical load 2, and a relay switch unit 4 is connected in series to the wire W1 between the ac power source ACV and the electrical load 2.
The constituent elements and functions in the semiconductor switch unit 3 are the same as those of the semiconductor switch unit 3 shown in fig. 1, and the constituent elements and functions in the relay switch unit 4 are the same as those of the relay switch unit 4 shown in fig. 4.
With the circuit design of the present embodiment, after the actuating signal input terminal p1 of the processing unit 11 receives the actuating signal s1, the processing unit 11 controls the closed or open state of the semiconductor switch unit 3 and/or the relay contact 41 according to the first control signal s31, the second control signal s32, the synchronization signal Vsync, the semiconductor switch closed delay time t1, the semiconductor switch open delay time t2, the relay contact closed delay time t3, and the relay contact open delay time t4, so as to measure at least one electrical parameter of the electrical load 2.
The above-mentioned embodiments are merely illustrative and not intended to limit the scope of the present invention, and all other equivalent modifications or substitutions which do not depart from the spirit of the present invention are intended to be included in the following claims.
Claims (13)
1. A control device for measuring electrical parameters of an electrical load is characterized by comprising:
the processing unit is provided with an actuating signal input end, a synchronous signal input end and a first control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a semiconductor switch unit connected in series between the AC power supply and the electrical load, the semiconductor switch unit having a semiconductor switch closed-circuit delay time and a semiconductor switch open-circuit delay time, the closed circuit or open circuit of the semiconductor switch unit being controlled by a first control signal generated by the first control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit through the first control signal generated by the first control signal output end according to the synchronous signal, the closed circuit delay time of the semiconductor switch and the open circuit delay time of the semiconductor switch, so as to measure at least one electrical parameter of the electrical load.
2. The apparatus of claim 1, further comprising a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the AC power source supplied to the electrical load.
3. The apparatus of claim 1, further comprising a transmission interface connected to the processing unit for transmitting the at least one electrical parameter.
4. The apparatus according to claim 1, wherein the semiconductor switch unit comprises at least one semiconductor device, the at least one semiconductor device is connected in series between the ac power source and the electrical load, and a gate of the at least one semiconductor device is connected to the first control signal output terminal of the processing unit.
5. A control device for measuring electrical parameters of an electrical load is characterized by comprising:
the processing unit is provided with an actuating signal input end, a synchronous signal input end and a second control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a relay switch unit connected in series between the AC power supply and the electrical load, the relay switch unit having a relay contact closed circuit delay time and a relay contact open circuit delay time, the closed circuit or open circuit of the relay switch unit being controlled by a second control signal generated by the second control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the relay contact according to the second control signal generated by the second control signal output end and the synchronous signal, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact, and at least one electrical parameter of the electrical load is measured.
6. The apparatus as claimed in claim 5, further comprising a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the AC power source supplied to the electrical load.
7. The apparatus as claimed in claim 5, further comprising a transmission interface connected to the processing unit for transmitting the at least one electrical parameter.
8. The control device for electrical parameter measurement of electrical load of claim 5, wherein the relay switch unit comprises:
a relay contact connected in series between the AC power source and the electrical load;
a relay coil coupled to the relay contact;
and a transistor connected to the relay coil, wherein a base of the transistor is connected to the second control signal output end of the processing unit.
9. A control device for measuring electrical parameters of an electrical load is characterized by comprising:
the processing unit is provided with an actuating signal input end, a synchronous signal input end, a first control signal output end and a second control signal output end;
a voltage zero-crossing circuit connected to an AC power supply for detecting the power supply zero-crossing point of the AC power supply at each period time and sending a synchronization signal to the synchronization signal input end of the processing unit at each power supply zero-crossing point;
an actuating signal generating unit connected to the processing unit for generating an actuating signal to the actuating signal input terminal of the processing unit;
the voltage detection circuit is connected with an electrical appliance load and used for detecting the voltage supplied to the electrical appliance load by the alternating current power supply through a lead and generating a voltage value to be transmitted to the processing unit;
a current detection circuit, including a series resistance connected to the wire between the AC power supply and the electrical load, for detecting the current supplied to the electrical load by the AC power supply and generating a current value to be transmitted to the processing unit;
a semiconductor switch unit connected in series between the AC power supply and the electrical load, the semiconductor switch unit having a semiconductor switch closed-circuit delay time and a semiconductor switch open-circuit delay time, the closed circuit or open circuit of the semiconductor switch unit being controlled by a first control signal generated by the first control signal output terminal of the processing unit;
a relay switch unit connected in series between the AC power supply and the electrical load, the relay switch unit having a relay contact closed circuit delay time and a relay contact open circuit delay time, the closed circuit or open circuit of the relay switch unit being controlled by a second control signal generated by the second control signal output terminal of the processing unit;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the semiconductor switch unit through the first control signal generated by the first control signal output end according to the synchronous signal, the closed circuit delay time of the semiconductor switch and the open circuit delay time of the semiconductor switch;
when the actuating signal input end of the processing unit receives the actuating signal, the processing unit controls the closed circuit or open circuit state of the relay contact according to the second control signal generated by the second control signal output end and the synchronous signal, the closed circuit delay time of the relay contact and the open circuit delay time of the relay contact, and at least one electrical parameter of the electrical load is measured.
10. The apparatus as claimed in claim 9, further comprising a display device connected to the processing unit for displaying the at least one electrical parameter, wherein the at least one electrical parameter includes one of voltage, current, power and time of the AC power source supplied to the electrical load.
11. The apparatus of claim 9, further comprising a transmission interface connected to the processing unit for transmitting the at least one electrical parameter.
12. The apparatus according to claim 9, wherein the semiconductor switch unit comprises at least one semiconductor device, the at least one semiconductor device is connected in series between the ac power source and the electrical load, and a gate of the at least one semiconductor device is connected to the first control signal output terminal of the processing unit.
13. The control device for electrical parameter measurement of electrical load of claim 9, wherein the relay switch unit comprises:
a relay contact connected in series between the AC power source and the electrical load;
a relay coil coupled to the relay contact; and a transistor connected to the relay coil, wherein a base of the transistor is connected to the second control signal output end of the processing unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107214168U TWM575112U (en) | 2018-10-19 | 2018-10-19 | Control device for measuring electrical parameters of appliance load |
| TW107214168 | 2018-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210863907U true CN210863907U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921558103.4U Active CN210863907U (en) | 2018-10-19 | 2019-09-19 | Control device for measuring electrical parameters of electric appliance load |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN210863907U (en) |
| TW (1) | TWM575112U (en) |
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2018
- 2018-10-19 TW TW107214168U patent/TWM575112U/en unknown
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2019
- 2019-09-19 CN CN201921558103.4U patent/CN210863907U/en active Active
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