CN211826437U - Light curtain connection detection circuit - Google Patents
Light curtain connection detection circuit Download PDFInfo
- Publication number
- CN211826437U CN211826437U CN201922420825.XU CN201922420825U CN211826437U CN 211826437 U CN211826437 U CN 211826437U CN 201922420825 U CN201922420825 U CN 201922420825U CN 211826437 U CN211826437 U CN 211826437U
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- light curtain
- circuit
- controller
- relay
- triode
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- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model relates to a detection circuitry is connected to light curtain, including controller, light curtain transmitting terminal and light curtain receiving terminal all link to each other with power supply circuit, still be provided with relay circuit between light curtain transmitting terminal and the light curtain receiving terminal and the power supply circuit, relay circuit with the controller links to each other, the controller still links to each other with light curtain transmitting terminal and light curtain receiving terminal respectively through the connector circuit. The utility model discloses can in time learn the connection condition of light curtain.
Description
Technical Field
The utility model relates to a light curtain detects technical field, especially relates to a detection circuitry is connected to light curtain.
Background
Modern lift-cabin door system security performance constantly improves, and the sedan-chair door prevents pressing from both sides the function and evolves to the non-contact of light curtain mode and bumps formula signal action mode by the mechanical switch action mode of mechanical touch panel, but because elevator sedan-chair door clamp people's that the light curtain inefficacy leads to the circumstances take place occasionally, consequently need a detection circuitry that can detect elevator light curtain and connect urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a detection circuitry is connected to light curtain is provided, the connection condition of light curtain can in time be learnt.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a detection circuitry is connected to light curtain, includes controller, light curtain transmitting terminal and light curtain receiving terminal all link to each other with power supply circuit, still be provided with relay circuit between light curtain transmitting terminal and the light curtain receiving terminal and the power supply circuit, relay circuit with the controller links to each other, the controller still links to each other with light curtain transmitting terminal and light curtain receiving terminal respectively through the connector circuit.
The relay circuit comprises a first relay switch circuit and a second relay switch circuit, the first relay switch circuit is located between the light curtain transmitting end and the power circuit, and the second relay switch circuit is located between the light curtain receiving end and the power circuit.
The first relay switch circuit and the second relay switch circuit are identical in structure and comprise triodes, bases of the triodes are connected with the controller, emitting electrodes of the triodes are grounded, collecting electrodes of the triodes are connected with the relay coil, the relay switch is communicated with the first interface when the relay coil is electrified, and the relay switch is communicated with the second interface when the relay coil is not electrified.
The controller is also connected with a buzzer circuit.
The buzzer circuit comprises a triode, the base electrode of the triode is connected with the controller, the emitting electrode of the triode is grounded, the collecting electrode of the triode is connected with one end of the buzzer, and the other end of the buzzer is connected with the power supply.
Advantageous effects
Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model discloses a relay disconnection light curtain transmitting terminal and receiving terminal's power, the signal through receiving light curtain transmitting terminal and receiving terminal judges whether the light curtain is connected and has a problem, can make corresponding processing when the light curtain is connected and has the trouble, avoids the emergence of pressing from both sides the people condition.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a circuit diagram of a controller according to the present invention;
fig. 3 is a circuit diagram of a first relay switch circuit and a second relay switch circuit in the present invention;
fig. 4 is a circuit diagram of the buzzer circuit of the present invention;
fig. 5 is a circuit diagram of the connector circuit of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The utility model discloses an embodiment relates to a detection circuitry is connected to light curtain, as shown in FIG. 1, including controller, light curtain transmitting terminal and light curtain receiving terminal all link to each other with power supply circuit, still be provided with relay circuit between light curtain transmitting terminal and the light curtain receiving terminal and the power supply circuit, relay circuit with the controller links to each other, the controller still links to each other with light curtain transmitting terminal and light curtain receiving terminal respectively through the connector circuit. The controller is also connected with a buzzer circuit.
In this embodiment, the controller employs a micro control unit of type PIC16F630, as shown in fig. 2, where pins RC0 and RC1 are connected to respective connector circuits respectively to realize connection with the light curtain transmitting end and the light curtain receiving end, where the connector circuits are shown in fig. 5; the pins RC3 and RC4 are connected with a relay circuit to realize power supply control of the light curtain transmitting end and the light curtain receiving end; pin RC5 is connected to the buzzer circuit to provide an alarm in the event of a fault.
The relay circuit comprises a first relay switch circuit and a second relay switch circuit, the first relay switch circuit is located between the light curtain transmitting end and the power circuit, and the second relay switch circuit is located between the light curtain receiving end and the power circuit.
As shown in fig. 3, first relay switch circuit and second relay switch circuit structure are the same, all include the triode, the base of triode links to each other with the controller, and the projecting pole ground connection, the collecting electrode links to each other with the relay coil, when the relay coil is got electric, relay switch and first interface intercommunication switch on between power supply circuit and light curtain transmitting terminal and the light curtain receiving terminal, when the relay coil loses electric, relay switch and second interface intercommunication switch off between power supply circuit and the light curtain transmitting terminal and the light curtain receiving terminal.
As shown in fig. 4, the buzzer circuit includes a triode, a base of the triode is connected to the controller, an emitter of the triode is grounded, a collector of the triode is connected to one end of the buzzer, and the other end of the buzzer is connected to the power supply.
The utility model discloses a testing process as follows: first, the controller controls the relay circuit to be conducted, even if the power circuit supplies power to the light curtain transmitting end and the light curtain receiving end, the light curtain transmitting end can send out signals after being supplied with power by the power circuit, the signals can be sent to the controller through the connector circuit, and if the controller does not receive the signals of the connector circuit at the moment, the connection of the light curtain transmitting end is indicated to be in fault. If the light curtain transmitting end is normal, a signal can be sent to the light curtain receiving end, the light curtain receiving end can send the signal to the controller through the connector circuit after receiving the signal, and if the controller does not receive the signal of the connector circuit at the moment, the connection of the light curtain receiving end is indicated to be failed. When the connection is determined to have no fault, the controller controls the first relay switch circuit to be closed, the second relay switch circuit is opened, namely the power supply circuit is powered off to the light curtain transmitting end, power is supplied to the light curtain receiving end, at the moment, the light curtain receiving end transmits signals to the controller through the connector circuit, if the signals received by the controller are light curtain shielding signals, the light curtain receiving end is judged to be normal, and if the signals received by the controller are light curtain shielding signals, the controller indicates that the light curtain receiving end has a fault. At the moment, the controller sends a trigger signal to the buzzer circuit to generate a buzzing alarm sound.
It is not difficult to discover, the utility model discloses a relay disconnection light curtain transmitting terminal and receiving terminal's power, through the signal judgement light curtain connection of receiving light curtain transmitting terminal and receiving terminal whether have a problem, can make corresponding processing when the light curtain is connected and is had the trouble, avoids the emergence of pressing from both sides the people condition.
Claims (5)
1. The utility model provides a detection circuitry is connected to light curtain, includes controller, light curtain transmitting terminal and light curtain receiving terminal all link to each other with power supply circuit, a serial communication port, still be provided with relay circuit between light curtain transmitting terminal and the light curtain receiving terminal and the power supply circuit, relay circuit with the controller links to each other, the controller still links to each other with light curtain transmitting terminal and light curtain receiving terminal respectively through the connector circuit.
2. The light curtain connection detection circuit of claim 1, wherein the relay circuit comprises a first relay switch circuit and a second relay switch circuit, the first relay switch circuit being located between the light curtain transmitting end and the power circuit, the second relay switch circuit being located between the light curtain receiving end and the power circuit.
3. The light curtain connection detection circuit of claim 2, wherein the first relay switch circuit and the second relay switch circuit are identical in structure and each comprise a triode, a base of the triode is connected with the controller, an emitter of the triode is grounded, a collector of the triode is connected with the relay coil, the relay switch is communicated with the first interface when the relay coil is powered on, and the relay switch is communicated with the second interface when the relay coil is powered off.
4. The light curtain connection detection circuit of claim 1, wherein the controller is further connected to a buzzer circuit.
5. The light curtain connection detection circuit of claim 4, wherein the buzzer circuit comprises a triode, a base of the triode is connected with the controller, an emitter of the triode is grounded, a collector of the triode is connected with one end of the buzzer, and the other end of the buzzer is connected with the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922420825.XU CN211826437U (en) | 2019-12-30 | 2019-12-30 | Light curtain connection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922420825.XU CN211826437U (en) | 2019-12-30 | 2019-12-30 | Light curtain connection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211826437U true CN211826437U (en) | 2020-10-30 |
Family
ID=73036370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922420825.XU Active CN211826437U (en) | 2019-12-30 | 2019-12-30 | Light curtain connection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211826437U (en) |
-
2019
- 2019-12-30 CN CN201922420825.XU patent/CN211826437U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 315800 4th floor, No.1, building 2, No.51 Longtanshan Road, Daqi street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo saifute Electronic Co.,Ltd. Address before: 315800 No.1, building 1, no.8-6 Wanquanhe Road, Xiapu, Beilun District, Ningbo City, Zhejiang Province Patentee before: Ningbo saifute Electronic Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |