CN209525442U - DC simulation resistance generator - Google Patents
DC simulation resistance generator Download PDFInfo
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- CN209525442U CN209525442U CN201921414394.XU CN201921414394U CN209525442U CN 209525442 U CN209525442 U CN 209525442U CN 201921414394 U CN201921414394 U CN 201921414394U CN 209525442 U CN209525442 U CN 209525442U
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- power supply
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Abstract
The utility model discloses a kind of DC simulation resistance generators, including shell, main control chip is set in shell, the DC power supply and signal acquisition circuit being electrically connected respectively with main control chip, and the resistance input terminal being electrically connected with signal acquisition circuit, resistance input terminal is embedded on shell, and camera is embedded on shell；Image processing circuit, storage circuit and switching circuit are additionally provided in shell, image processing circuit is electrically connected with camera, and switching circuit is electrically connected with DC power supply, and switching circuit exports electric signal according to image processing circuit and opens and closes DC power supply；It is additionally provided in shell and the battery of operating voltage is provided.Camera acquires facial image when use, and image processing circuit identifies facial image, if facial image is consistent with pre-stored image in storage circuit, switching circuit opens DC power supply, so that the utility model is come into operation, otherwise cannot use.Therefore the utility model can be controlled by recognition of face mode, easy to operate.
Description
Technical field
The utility model relates to electronic technology field more particularly to a kind of DC simulation resistance generators.
Background technique
In resistance detection, great current tester is gradually widely applied, such as measuring switch, breaker, transformer
Etc. the contact resistances of equipment, loop resistance test equipment-circuit resistance tester；For measuring transformer, mutual inductor and motor
Equipment-quick measurement of DC resistance instrument of the D.C. resistance of the perception measurand such as winding, the test electric currents of these instruments can be with
From several peaces to several hundred peaces.The calibration of this quasi-instrument can not be realized with traditional measuring resistance, because of material standard resistance
Passable electric current maximum only has 30A, the detection to 30A electric current is greater than, accurate due to being influenced by power, thermal stability etc.
Degree greatly declines.In this situation, artifical resistance comes into being, it has small in size, and rated current is big, more quasi- than resistance in kind
The features such as exactness is high, easy to use, flexible operation.
Artifical resistance can be divided into AC analogue resistance, DC simulation resistance and alternating current-direct current artifical resistance, direct current mould by performance
Quasi- resistor only exports D.C. resistance, and common DC simulation resistance accuracy is up to 0.02% in work.But it is existing
DC simulation resistance generator mostly uses greatly manual operation, uses it limited.
Summary of the invention
In view of the above deficiencies, the technical problem to be solved by the utility model is to provide one kind can pass through recognition of face control
The DC simulation resistance generator of system.
In order to solve the above technical problems, the technical solution of the utility model is:
Main control chip is arranged in the shell for a kind of DC simulation resistance generator, including shell, respectively with the master control
The DC power supply and signal acquisition circuit of chip electrical connection, and the resistance input terminal being electrically connected with the signal acquisition circuit,
The resistance input terminal is embedded on the housing, and being embedded on the shell is having the camera for obtaining facial image；Institute
The image processing circuit that face for identification is additionally provided in shell is stated, and be electrically connected respectively with described image processing circuit
Storage circuit and switching circuit, described image processing circuit are also electrically connected with the camera, the switching circuit also with it is described
DC power supply electrical connection, the switching circuit open and close the direct current according to the electric signal that described image processing circuit exports
Power supply；It is additionally provided in the shell and the battery of operating voltage is provided.
Preferred embodiment is that power switch is also embedded on the shell, and the power switch is electrically connected with the switching circuit
It connects, the switching circuit opens and closes the DC power supply according to the power switch transmission telecommunications number.
Preferred embodiment is that the switching circuit includes relay, described image processing circuit and power switch difference
It is electrically connected with the trigger winding of the relay, the normally opened contact of the relay is electrically connected with the DC power supply.
Preferred embodiment is that copper wire bar is provided in the shell, and the side of the copper wire bar is equipped with fastener, described tight
The side of firmware is equipped with fixed value resistance, is equipped with patch jack at the top of the fixed value resistance, the patch jack with it is described
Resistance input terminal is correspondingly arranged；The side of the fixed value resistance is equipped with mobile clamping plate.
After adopting the above technical scheme, the beneficial effects of the utility model are:
Due to the DC simulation resistance generator of the utility model, including shell, main control chip is set in shell, respectively with
The DC power supply and signal acquisition circuit of main control chip electrical connection, and the resistance input terminal being electrically connected with signal acquisition circuit,
Resistance input terminal is embedded on shell, and being embedded on shell is having the camera for obtaining facial image；It is additionally provided in shell
The image processing circuit of facial image for identification, and the storage circuit and switch electricity that are electrically connected respectively with image processing circuit
Road, image processing circuit are also electrically connected with camera, and switching circuit is also electrically connected with DC power supply, switching circuit according to image at
The electric signal for managing circuit output opens and closes DC power supply；It is additionally provided in shell and the battery of operating voltage is provided.When use
Camera obtains facial image, and the image transmitting to image processing circuit, image processing circuit will be electric with storage after image procossing
The image stored in road is compared, and exports if image is consistent and opens corresponding electric signal, and switching circuit, which executes, opens direct current
Power supply movement, makes the utility model come into operation, and otherwise DC power supply is closed, and the utility model cannot use.As it can be seen that this is practical
Novel DC simulation resistance generator, can be controlled by recognition of face, easy to operate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model DC simulation resistance generator；
Fig. 2 is the partial schematic diagram of the utility model DC simulation resistance generator；
Fig. 3 is the functional block diagram of the utility model DC simulation resistance generator；
In figure: 1- shell, 2- pillar, 3- resistance input terminal, 4- camera, 5- copper wire bar, 6- power switch, 7- fastening
Part, 8- fixed value resistance, 9- patch jack, the mobile clamping plate of 10-.
Specific embodiment
Understand to remove the purpose of this utility model, technical solution and advantage more, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As Fig. 1 to Fig. 3 jointly shown in, a kind of DC simulation resistance generator, including shell 1, the bottom of shell 1 are provided with
Pillar 2, shell 1 is interior to be arranged main control chip, the preferred singlechip chip of main control chip, the direct current being electrically connected respectively with main control chip
Source and signal acquisition circuit, and the resistance input terminal 3 being electrically connected with signal acquisition circuit, resistance input terminal 3 are embedded in shell 1
On, the camera 4 for obtaining facial image is embedded on shell 1；The figure of facial image for identification is additionally provided in shell 1
It is wherein pre- in storage circuit as processing circuit, and the storage circuit and switching circuit that are electrically connected respectively with image processing circuit
There is facial image, image processing circuit is electrically connected with camera 4, and switching circuit is electrically connected with DC power supply, switching circuit root
DC power supply is opened and closed according to the electric signal of image processing circuit output；It is additionally provided in shell 1 and the electricity of operating voltage is provided
Pond.
It is also embedded on shell 1 in the present embodiment in power switch 6, power switch 6 is electrically connected with switching circuit, switching circuit
According to 6 transmission telecommunications number of power switch, DC power supply is opened and closed.
Switching circuit includes relay, and image processing circuit and power switch 6 are electrically connected with the trigger winding of relay respectively
It connects, the normally opened contact of relay is electrically connected with DC power supply.
Copper wire bar 5 is provided in shell 1, the side of copper wire bar 5 is equipped with fastener 7, and the side of fastener 7 is equipped with fixed
It is worth resistance 8, the top of fixed value resistance 8 is equipped with patch jack 9, and patch jack 9 is correspondingly arranged with resistance input terminal 3；Definite value electricity
The side of resistance 8 is equipped with mobile clamping plate 10.
As Fig. 1 to Fig. 3 jointly shown in, the present embodiment by camera 4 and image processing circuit in use, can stored
Facial image is pre-seted in circuit.After the face of user is taken by camera 4, which is transmitted to image procossing
Circuit, after the facial image prestored in facial image and storage circuit is compared image processing circuit, if the two is consistent,
It exports and opens corresponding electric signal to switching circuit, in the present embodiment, image processing circuit exports corresponding electric signal to relay
The trigger winding of device acts the normally opened contact of relay, and closure makes DC power supply come into operation.Otherwise, image processing circuit
The electric signal of output is unable to trigger relay, and relay is failure to actuate, and DC voltage, which is in, closes device.At this point, to be measured one
Resistance is connected on 3 mouthfuls of resistance input terminal, by the function of the survey resistance value for the control panel (omit in figure and do not draw) being arranged in lower case,
And alternating current-direct current is set, and the pin of testing resistance is connected to patch jack 9, and the resistance value of fixed value resistance 8 is fixed, but can be certainly
Dynamic mobile clamping plate 10, the resistance value of the testing resistance, which is just directly measured, to be come, and resistance value is transmitted to 3 mouthfuls of resistance input terminal, resistance is defeated
Enter the 3 mouthfuls of meetings in end and send the information of the testing resistance to signal acquisition circuit, signal acquisition circuit transmits a signal to monolithic again
Machine core piece, singlechip chip are transferred to the display screen (omit in figure and do not draw) being arranged on shell, are shown resistance value by display screen
Come.
In addition, the electrical connection of image processing circuit and camera 4, singlechip chip and image processing circuit are electrically connected
The electrical connection between relationship and relay and image processing circuit and power switch 6 is connect, is the prior art, herein
It is not described in detail.
The preferred embodiment of the utility model described above, is not intended to limit the utility model, all practical at this
Made any modification within novel spirit and principle, etc. the improvement of same DC simulation resistance generator structure etc.,
It should be included within the scope of protection of this utility model.
Claims (4)
1. DC simulation resistance generator, including shell, the shell is interior to be arranged main control chip, electric with the main control chip respectively
The DC power supply and signal acquisition circuit of connection, and the resistance input terminal being electrically connected with the signal acquisition circuit, the electricity
Resistance input terminal is embedded on the housing, which is characterized in that
The camera for obtaining facial image is embedded on the shell；
The image processing circuit of face for identification is additionally provided in the shell, and electric with described image processing circuit respectively
The storage circuit and switching circuit of connection, described image processing circuit are also electrically connected with the camera, and the switching circuit is also
It is electrically connected with the DC power supply, the switching circuit opens and closes institute according to the electric signal that described image processing circuit exports
State DC power supply；
It is additionally provided in the shell and the battery of operating voltage is provided.
2. DC simulation resistance generator according to claim 1, which is characterized in that be additionally provided with power supply on the shell
Switch, the power switch is electrically connected with the switching circuit, the switching circuit according to the power switch transmission telecommunications number,
Open and close the DC power supply.
3. DC simulation resistance generator according to claim 2, which is characterized in that the switching circuit includes relay
Device, described image processing circuit and the power switch are electrically connected with the trigger winding of the relay respectively, the relay
Normally opened contact be electrically connected with the DC power supply.
4. DC simulation resistance generator according to any one of claims 1 to 3, which is characterized in that set in the shell
It is equipped with copper wire bar, the side of the copper wire bar is equipped with fastener, and the side of the fastener is equipped with fixed value resistance, described fixed
Patch jack is installed, the patch jack is correspondingly arranged with the resistance input terminal at the top of value resistance；The fixed value resistance
Side mobile clamping plate is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921414394.XU CN209525442U (en) | 2019-08-29 | 2019-08-29 | DC simulation resistance generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921414394.XU CN209525442U (en) | 2019-08-29 | 2019-08-29 | DC simulation resistance generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209525442U true CN209525442U (en) | 2019-10-22 |
Family
ID=68232829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921414394.XU Active CN209525442U (en) | 2019-08-29 | 2019-08-29 | DC simulation resistance generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209525442U (en) |
-
2019
- 2019-08-29 CN CN201921414394.XU patent/CN209525442U/en active Active
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