CN113483991A - Equipment for detecting anti-interference capability of light-emitting component - Google Patents

Abstract

The utility model provides a detect equipment of light-emitting component immunity, relates to one kind and is used for the test equipment who detects the light-emitting component immunity, through the synchronous acquisition to the light intensity of light-emitting component during operation under strong interference environment, the voltage or the electric current of target pencil, calculates and shows the data of gathering, and the data that accessible demonstration or calculation obtained directly observes the light intensity of being surveyed the light-emitting component under interference environment and the change of the voltage or the electric current of target pencil.

Description

Equipment for detecting anti-interference capability of light-emitting component

Technical Field

The present disclosure relates to a testing apparatus, and more particularly, to an apparatus for testing the immunity of a light emitting device.

Background

With the development of science and technology, electronic and electrical appliances have been developed rapidly, wherein a large number of optoelectronic devices and optoelectronic components are used, and the optoelectronic components have the most types and applications of light-emitting components, so that the light-emitting components are used in a large number for illumination, communication, distance measurement, display, high-energy processing and the like.

The method is characterized in that the method mainly comprises the following steps of carrying out space electric field interference on the light-emitting component in a darkroom environment through a high-power antenna, and coupling the interference into a wire of the light-emitting component requiring interference test through elements such as a coil and a clamping plate.

In the fields with low requirements, people often observe whether the light-emitting component flickers or extinguishes under the interference environment, a fiber-optic camera is arranged for video observation in the occasions with high requirements, and special equipment is required for detecting the light-emitting component in the occasions with high requirements, so that the light-emitting component is over-specialized, poor in universality and low in price.

In order to solve the above problem, there is a need for a device for testing the noise immunity of a light emitting module, comprising: the device has the advantages of strong universality, wide application range, high anti-interference capability and reliability, capability of measuring the light intensity of the light-emitting component at a high speed or synchronously measuring the current and the current voltage of one or more interfered wire harnesses while measuring the light intensity, and operation, display and storage of signals through an upper computer.

Disclosure of Invention

In order to solve various problems faced by the anti-interference capability test of the light-emitting component, the scheme provides equipment for detecting the anti-interference capability of the light-emitting component, which comprises the following steps: the light-sensitive sensing module converts a changed optical signal emitted by a tested light-emitting component into a changed electric signal; when the optical signal is required to be measured and the current signal of the target wiring harness is measured, the current signal of the wiring harness to be tested can be subjected to a series of conditioning by the current conditioning module until the electric signal is within a range suitable for the data acquisition module; when the optical signal needs to be measured and the voltage signal of the target wiring harness is also measured, the voltage signal of the wiring harness to be tested is subjected to a series of conditioning by the voltage conditioning module to obtain an electric signal in a range suitable for the data acquisition module; and finally, synchronously acquiring the converted electric signals through a data acquisition module, and transmitting the obtained data to an upper computer module for mathematical operation, display and storage. The scheme provides equipment for detecting the anti-interference capability of a light-emitting component, which has multiple composition modes, wherein one mode is that the equipment consists of a photosensitive sensing module, a data acquisition module and an upper computer module; the second module consists of a photosensitive sensing module, a current conditioning module, a data acquisition module and an upper computer module; the third is composed of a photosensitive sensing module, a voltage conditioning module, a data acquisition module and an upper computer module; and the fourth step of the system is composed of a photosensitive sensing module, a current conditioning module, a voltage conditioning module, a data acquisition module and an upper computer module.

The photosensitive sensing module group related to the equipment for detecting the anti-interference capability of the light-emitting component comprises a photosensitive sensing module. The photosensitive sensing module is provided with a photosensitive head, and the front end of the photosensitive head is provided with a detachable light filtering head for filtering light rays with specific wavelengths. The photosensitive sensing module can further comprise an optical fiber light guide module, the optical fiber light guide module is used for guiding light, the optical fiber light guide module comprises but is not limited to a light guide optical fiber, an optical fiber gathering head and a light guide clamping joint, the optical fiber light guide module is preferably made of non-metal materials, and the optical fiber light guide module comprises but is not limited to the optical fiber gathering head, the optical fiber and an armored protective layer of the optical fiber, and the light guide clamping joint are made of non-metal materials. When the tested piece is tested in strong electromagnetic interference environment, the light sensing head can be interfered, and the front end of the light sensing head is additionally provided with the optical fiber light guide module to guide light to a place except a strong electric field for collection. The photosensitive sensing module can also comprise a light shield which is used for shielding the interference of light rays except the specific position of the tested light-emitting component, and the characteristics of the light shield installed at the foremost end of the prior optical fiber light guide module and the photosensitive sensing module are set to be the same, so that the same light shield can be installed on the optical fiber light guide module and the photosensitive sensing module. The photosensitive sensing module can be set into four modes, one mode is that the photosensitive sensing module only comprises the photosensitive sensing module; the photosensitive sensing module comprises a photosensitive sensing module and an optical fiber light guide module; thirdly, the photosensitive sensing module comprises a photosensitive sensing module and a light shield; the photosensitive sensing module comprises a photosensitive sensing module, an optical fiber light guide module and a light shield;

the optical fiber light guide module is mainly used for guiding light of a detected luminous body out of an interference environment in a strong electromagnetic interference environment, the guided light passes through a filter head and then is emitted to a photosensitive head of the photosensitive sensing module, and the conversion from an optical signal to an electric signal is performed through the photosensitive head, so that the test of a luminous component cannot be influenced, and the photosensitive sensing module can be ensured not to be interfered by a magnetic field to enable a conversion result to be stable, real and reliable. The photosensitive sensing module is a photoelectric conversion module, the main function of the photosensitive sensing module is to convert optical signals into electric signals for the data acquisition module to acquire, and the preferential photosensitive sensing module has high-speed responsiveness; the function of the optical filtering head is to filter light, which can pass light with specific wavelength and attenuate light with wavelength except for specific wavelength, if only light with specific wavelength range is concerned, only the optical filtering head at the front end of the optical sensing head on the photosensitive sensing module needs to be replaced to the light with specific wavelength range. The optical fiber light guide module is detachably connected with the photosensitive sensing module through the light guide joint on the optical fiber light guide module, under a strong electromagnetic environment, the purpose of collecting light of the light-emitting component without influencing a test environment can be achieved by using the optical fiber light guide module, and in addition, electric field interference or damage to collecting equipment can be prevented; in the test of the space-free electromagnetic field, the optical fiber light guide module is not required to be additionally arranged, and the photosensitive sensing module is directly arranged at a required position. The light-emitting assembly to be tested is often an assembly including a plurality of light-emitting bodies, and a light shield is required to shield light emitted from other light-emitting bodies in adjacent positions so as not to interfere with the test of the light-emitting body to be tested.

The current conditioning module related to the equipment for detecting the anti-interference capability of the light-emitting assembly can be divided into two types, one is contact current measurement, the mode is that a measured wire bundle is connected with a sampling resistor in series, the current flows through the sampling resistor to form voltage on the sampling resistor, the voltage on the sampling resistor is collected by the data acquisition module after passing through the conditioning and isolating module, and the actual current passing through the wire is inversely calculated on the upper computer module; and the other is non-contact current measurement, wherein the current of a measured lead is measured by a non-contact current sensor and is transmitted to a data acquisition module for acquisition after conditioning.

The voltage conditioning module related to the equipment for detecting the anti-interference capability of the light-emitting component can be divided into two types, one is contact voltage measurement, the voltage at the position of a target wire harness relative to a reference level can be measured by the mode, the transient voltage caused by interference energy coupled into the wire harness of the light-emitting component to be detected can be very high and can reach thousands of volts, a series resistance network is used for voltage division to ensure that the conditioning module cannot be damaged by high voltage, voltage signals after voltage division are conditioned by the conditioning module and then transmitted to the data acquisition module through the isolation module for acquisition, and therefore interference signals or direct damage of the data acquisition module by high voltage can be avoided, signal acquisition is accurate, and reliability is high; and the other one is non-contact voltage measurement, namely measuring the voltage of a measured lead by a non-contact voltage sensor, and transmitting the voltage to a data acquisition module for acquisition after conditioning.

The photosensitive sensing module, the current conditioning module and the voltage conditioning module related to the equipment for detecting the anti-interference capability of the light-emitting component respectively comprise at least one path, and at least one path of light intensity measurement of the light-emitting component, voltage measurement of a reference level by a target wire harness of the light-emitting component and high-speed synchronous measurement of the current of the target wire harness of the light-emitting component can be implemented through the equipment.

The data acquisition module related to the equipment for detecting the anti-interference capability of the light-emitting component comprises at least one data acquisition card, and each data acquisition card comprises at least one path of data acquisition interface. The data acquisition module can acquire the electrical signals output by the photosensitive sensing module, the current conditioning module and the voltage conditioning module. After the data acquisition module finishes the electric signal of each signal module, the data acquisition module transmits the data to the upper computer module for operation, display and storage.

Drawings

Fig. 1 is a block diagram of a light emitting device with a noise immunity testing device according to the present disclosure.

Fig. 2 is a block diagram of a device for detecting the noise immunity of a light emitting device according to the present invention.

Fig. 3 is a schematic diagram of the whole module components of the voltage and current collection in a contact mode of the device for detecting the anti-interference capability of the light-emitting component.

Fig. 4 is a block diagram of a non-contact voltage and current acquisition of an apparatus for detecting noise immunity of a light emitting device according to the present disclosure.

Fig. 5 is a schematic diagram of the whole module components of the non-contact voltage and current collection of the device for detecting the anti-interference capability of the light-emitting component.

Fig. 6 is an exploded view of all parts of a photosensitive module of the immunity testing apparatus for light emitting device according to the present invention.

Fig. 7 is a front view of all parts of the photosensitive module of the immunity testing apparatus for light emitting device according to the present invention.

Fig. 8 is a front view of the photosensitive module of the immunity testing apparatus for light emitting device according to the present invention, which only uses the optical fiber light guide module and the photosensitive sensing module.

Fig. 9 is a front view of the photosensitive module of the immunity testing apparatus for light emitting device according to the present invention, which uses only the light shielding cover and the photosensitive sensing module.

Fig. 10 is a front view of the photosensitive module of the immunity testing apparatus for light emitting device according to the present invention, which uses only the photosensitive sensor module.

Detailed Description

An apparatus for detecting the noise immunity of a light emitting device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a diagram of a whole module composition of an apparatus for detecting an anti-interference capability of a light emitting device according to the present disclosure, in which a photosensitive sensing module converts a varying optical signal emitted by a light emitting device to be detected into a varying electrical signal; the current conditioning module is used for conditioning a current signal of a wire harness to be tested of the light-emitting assembly to a series of electric signals in a range suitable for the data acquisition module; the voltage conditioning module is used for conditioning the voltage signal of the wire harness to be tested of the light-emitting component to a series of electric signals in a range suitable for the data acquisition module. The three types of signals to be measured are converted into electric signals suitable for the data acquisition module through the three types of modules, high-speed acquisition is carried out through the data acquisition module, and finally the obtained data are transmitted to the upper computer module to be subjected to mathematical operation, display and storage. The equipment comprises at least one path of photosensitive sensing module, at least one path of current conditioning module and at least one path of voltage conditioning module, wherein the data acquisition module comprises data synchronous acquisition channels with the number of the corresponding signal modules being more than or equal to that of the corresponding signal modules, so that synchronous measurement can be carried out on at least one path of optical signals, voltage signals and current signals.

More specifically, as shown in fig. 2 and fig. 3, a device module composition diagram and a device module composition diagram for voltage and current collection in a contact manner of a device for detecting noise immunity of a light emitting module according to the present invention are shown, and as shown in fig. 2, the photosensitive sensing module includes three parts, namely, an optical fiber light guiding module, a photosensitive sensing module 100 and a light shield 150, wherein the optical fiber light guiding module includes, but is not limited to, an optical fiber 130, a light focusing head 140 and a light guiding card connector 120, wherein the photosensitive sensing module 100 has a light sensing head 101, a detachable light filtering head 110 is disposed at a front end of the light sensing head 101, and a light filter 111 is disposed on the light filtering head 110.

The optical fiber light guide module is used for guiding light, as shown in fig. 6: one end of the light gathering head 140 is a condensing lens 144, the other end is a first optical fiber interface 141, the condensing lens 144 can transmit the light to the first optical fiber interface 141 after gathering, the inverted cone structure of the first optical fiber buckle 142 can fix one end of the optical fiber 130 on the light gathering head 140, the light gathered by the condensing lens 144 is transmitted to the second optical fiber interface 123 of the light guide card joint 120 through the optical fiber 130, the second optical fiber buckle 122 can detachably fix the other end of the optical fiber 130 on the light guide card joint 120, one end of the light guide card joint 120 is provided with a light guide installation buckle 121, the light guide installation buckle 121 can be clamped on the accessory installation groove 102 of the photosensitive sensing module 100, so that the light guided out by the optical fiber 130 can pass through the filter head 110 and then reach the photosensitive head 101, and the optical signal is converted into an electrical signal. Since the optical fiber 130 is detachably connected, it can be replaced at any time as needed.

The light shield 150 is provided with a light shielding mounting buckle 151, and the light shielding mounting buckle 151 is used for mounting the light shield 150 on the light focusing head 140 or the photosensitive sensing module 100, as shown in fig. 7 and 9, the light shielding mounting buckle 151 can be clamped on the accessory mounting groove 102 of the photosensitive sensing module 100 or the accessory mounting groove 143 of the light focusing head 140.

The optical fiber light guide module and the light shield 150 are preferably made of a non-metal material, and because the non-metal material is hardly interfered by an electric field and hardly influences the electric field distribution of a test environment, the optical fiber light guide module and the light shield hardly have any adverse effect on test illumination and do not transmit an interference electric field to the outside.

Describing functions and combined use of each module of the photosensitive sensing module in more detail, in an anti-interference test of the light-emitting component, if interference is not loaded through a space electric field, environmental electromagnetic interference is small, and a light-emitting body of the light-emitting component can be measured only by using the photosensitive sensing module 100, as shown in fig. 10; if the interference test is performed through the spatial electric field, an optical fiber light guide module may be added at the front end of the photosensitive sensing module 100, wherein a light gathering head 140 of the optical fiber light guide module is placed at a light emitting body of the light emitting assembly to be tested in a strong electric field environment, and light emitted by the light emitting assembly is transmitted to a position far away from the spatial electric field through an optical fiber 130 of the optical fiber light guide module and is finally transmitted to the photosensitive sensing module 100, as shown in fig. 8; if the light emitting device includes a plurality of light emitting devices and only one or more of the light emitting devices is subjected to the anti-interference test, in order to avoid the light influence test of other light emitting devices, the light shielding cover 150 may be additionally installed, if the optical fiber light guiding module is not added in front of the photosensitive sensing module 100, the light shielding cover 150 is added to the photosensitive sensing module 100, as shown in fig. 9, otherwise, the light shielding cover is added to the light gathering head 140 of the optical fiber light guiding module, as shown in fig. 7.

As shown in fig. 2 and 3, the present invention relates to an apparatus module composition diagram and an apparatus module composition diagram for voltage and current acquisition in a contact manner of an apparatus for detecting immunity of a light emitting module, wherein the voltage and current measurement is performed in a direct measurement manner, wherein for the current measurement, the voltage on a sampling resistor connected in series to a measured wire bundle is directly measured, so as to inversely calculate the actual current passing through the wire, and for the current measurement, a voltage signal obtained by the sampling resistor is preferably conditioned and then transmitted to a data acquisition module through a signal isolation module a for acquisition, so that interference signals can be avoided or the data acquisition module is damaged, so that the signal acquisition is accurate and the reliability is high; for the voltage measurement, the method can measure the voltage of the target wiring harness at a position corresponding to a reference level, the transient voltage caused by interference energy coupled into the wiring harness of the measured light-emitting component can be very high, a series resistance network is required to be used for voltage division to ensure that a conditioning module cannot be damaged by high voltage, and the voltage signal after voltage division is conditioned and then transmitted to a data acquisition module through a signal isolation module B for acquisition, so that interference of interference signals or damage to the data acquisition module can be avoided, the signal acquisition is accurate, and the reliability is high;

fig. 4 and 5 are a device module composition diagram and an apparatus module composition diagram for collecting voltage and current in a non-contact manner of a device for detecting the immunity of a light-emitting element according to the present disclosure, wherein the photosensitive sensing module portion is consistent with the above, and is not described again here; the measurement to the electric current among the non-contact voltage electric current collection mode is that the electric current of the wire that will be surveyed through non-contact current sensor measures, transmits after conditioning to the data acquisition module and gathers, measures the voltage of the wire that will be surveyed through non-contact voltage sensor to the measurement of voltage, transmits after conditioning to the data acquisition module and gathers.

The acquisition cards related to the data acquisition module all use a synchronous sampling mode, so that the data acquired by all channels are synchronously aligned in time, and the changes of the light intensity of the target luminous body of the detected luminous component and the voltage and the current of the target wiring harness at the same time can be truly reflected.

After the data acquisition module acquires the electric signals of each signal module, the data acquisition module transmits the data to an upper computer module for operation, display and storage, wherein the upper computer module comprises but is not limited to a PC, an HMI and a single board computer with display.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a detect equipment of light-emitting component immunity, its characterized in that contains photosensitive sensing module, and it is the light signal conversion who is surveyed light-emitting component and gives the data acquisition module collection for the signal of telecommunication, and the data acquisition module is gathered at every turn and is accomplished the back with data transfer and handle for the host computer module.

2. The apparatus according to claim 1, further comprising a voltage conditioning module, wherein the voltage at the target beam of the light emitting module under test is conditioned to output an electrical signal, and the electrical signal is transmitted to the data acquisition module for acquisition.

3. The apparatus for detecting the immunity of a light-emitting component according to claim 1, further comprising a current conditioning module, wherein the current at the target beam of the light-emitting component to be detected is conditioned to output an electrical signal, and the electrical signal is transmitted to the data acquisition module for acquisition.

4. The apparatus according to claim 1, further comprising a voltage conditioning module and a current conditioning module, wherein the current conditioning module conditions the current at the target beam of the light emitting device to output an electrical signal and transmits the electrical signal to the data acquisition module for acquisition, and the voltage conditioning module conditions the voltage at the target beam of the light emitting device to output an electrical signal and transmits the electrical signal to the data acquisition module for acquisition.

5. The apparatus for detecting the immunity of a light emitting component according to any one of claims 2 and 4, wherein the voltage conditioning module is divided into a contact type and a non-contact type, wherein the contact type comprises a contact voltage conditioning module and a signal isolation module B, and the non-contact type comprises a non-contact voltage sensor and a non-contact voltage conditioning module.

6. The apparatus for detecting the immunity of a light emitting component according to any one of claims 3 and 4, wherein the current conditioning module is divided into a contact type and a non-contact type, wherein the contact type comprises a contact current conditioning module and a signal isolation module A, and the non-contact type comprises a non-contact current sensor and a non-contact current conditioning module.

7. The apparatus for detecting the immunity of a light emitting module according to any one of claims 1-4, comprising a data acquisition module, wherein: the acquisition mode of all the data channels is synchronous acquisition.

8. The apparatus for detecting the immunity of a light emitting module according to any of claims 1-4, comprising a photosensitive sensor module, wherein the photosensitive sensor module comprises a photosensitive sensor module 100, a photosensitive head 101 for converting a varying optical signal into a varying electrical signal is disposed at the front end of the photosensitive sensor module 100, and a replaceable filter head 110 disposed at the front end of the photosensitive head 101 for filtering the wavelength of the incident light, wherein the filter head 110 can attenuate the light of other wavelengths, but hardly affect the light of the wavelength in the allowable range to pass through to the photosensitive head 101.

9. The apparatus according to claim 8, wherein the photosensitive sensor module further comprises a fiber-optic light guide module, wherein the fiber-optic light guide module comprises a light-gathering head 140 for gathering light of the light-emitting device to be measured, an optical fiber 130 for transmitting the gathered light of the light-gathering head, and a light-guiding connector 120 for fixing the optical fiber to the photosensitive sensor module, wherein one end of the optical fiber 130 is detachably connected to the light-gathering head 140 via a first fiber connector 142, and the other end of the optical fiber 130 is detachably connected to the light-guiding connector 120 via a second fiber connector 123.

10. The apparatus for detecting the immunity of a light emitting module according to any one of claims 8 and 9, further comprising a light shielding cover 150 for shielding other external light, wherein the light shielding cover is mounted on the light focusing head 140 or the photosensitive sensor module 100 by a light shielding mounting clip 151 thereon.

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