CN116893335A - Electronic selector switch product cold joint inspection circuit and method - Google Patents
Electronic selector switch product cold joint inspection circuit and method Download PDFInfo
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- CN116893335A CN116893335A CN202310810877.6A CN202310810877A CN116893335A CN 116893335 A CN116893335 A CN 116893335A CN 202310810877 A CN202310810877 A CN 202310810877A CN 116893335 A CN116893335 A CN 116893335A
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- 238000007689 inspection Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention discloses a virtual welding inspection circuit and a virtual welding inspection method for an electronic selective switch product, wherein the circuit comprises a current detection circuit module, a diode voltage doubling circuit module and a driving IC chip U7; the device comprises a drive IC, a diode voltage doubling circuit and a current detection circuit, wherein the current detection circuit comprises a sampling resistor, and when the detection of the selective switch is required to be carried out, a detection voltage of 72V is provided for the selective switch, and the voltage is controlled by software, so that the welding spots of the selective welding in the electronic selective switch are well checked, the accuracy of the selective welding detection is improved, and the labor force is saved.
Description
Technical Field
The invention relates to the technical field of cold joint detection, in particular to a cold joint detection circuit and method for an electronic selective switch product.
Background
In the development work of oil and gas fields, the application of perforation technology is very important, and necessary technical support can be provided for the optimization of the development work of the oil and gas fields. Surface inspection after connection of the perforating gun string is necessary to ensure reliability of the perforating system.
The selective switch belongs to electronic products, relates to a welding process, and the quality of welding can directly influence the quality of the products, in particular to disallowing the cold welding, whether the cold welding is detected by visual inspection or not is detected by experience, and the method by visual inspection and experience is simple and convenient, but the welding point of each cold welding is difficult to detect.
Disclosure of Invention
The invention provides a circuit and a method for checking the cold joint of an electronic selective switch product, and provides a cold joint detection circuit and a cold joint detection logic, which can well check the cold joint of the cold joint.
In a first aspect, an electronic selective switch product cold joint inspection circuit includes a current detection circuit module and a diode voltage doubling circuit module, and further includes a driving IC chip U7; the diode voltage doubling circuit module is arranged at the VS port 6 of the driving IC chip and comprises a capacitor C27 and a voltage stabilizing diode D15 which are connected in series, the capacitor C27 is also connected with a voltage stabilizing diode D14 and a selector switch Q4 in parallel, and the voltage stabilizing diode D14 and the selector switch Q4 are connected to the node HVI1.
Specifically, the output circuit also comprises a current limiting device U24 for protecting the output circuit, the input end of the current limiting device U24 is connected with the power supply voltage VDD, and the output end is connected with the node HVI1.
Specifically, the capacitor C27 and the two ends of the zener diode D15 connected in series with the diode voltage doubling circuit module are further connected in parallel with the capacitor C28 and the trigger switch Q7, and the zener diode D15 and the capacitor C28 are connected to the node HV01.
Specifically, the selector switches Q4 and Q7 are respectively connected to the HO port 7 and the LO port 5 of the driving IC chip U7, and the connecting lines are further respectively provided with diodes (D17 and D19) and shunt resistors (R7 and R8) connected in parallel.
Specifically, two capacitors (C29, C30) arranged in parallel are connected between the VCC port 1 and the ground GND port 4 of the IC chip power supply U7, a zener diode D13 is connected between the VCC port 1 and the VB port 8, and the other end of the zener diode D13 is connected to the VS port 6.
Specifically, the current detection circuit module comprises a chip U8, wherein an RS-port 8 of the chip U8 is connected with a power supply voltage VDD, an RS+ port 1 is communicated with a VCC port 2 and then is connected to the power supply voltage VDD, a power supply voltage port is arranged in the middle of the power supply voltage port, and a sampling resistor R10 is further arranged on a connecting circuit; the VCC port 2 is also connected with a capacitor C34, then connected with the GND port 4 in parallel and connected with the OUT port 5, and a resistor R12 and a capacitor C23 are also arranged on the connecting line.
On the other hand, the method for inspecting the cold joint of the electronic selective switch product is realized based on a cold joint inspection circuit of the electronic selective switch product, and comprises the following steps:
setting delay one, applying 36V power supply voltage to a power supply voltage port, and collecting and recording the average current value of a line as a first group of average current value;
setting a delay II, providing 72V supply voltage for a supply voltage port by a diode voltage doubling circuit module, and collecting and recording the average current value of a line as a second group of average current value;
disconnecting the power supply voltage, presetting an alarm range difference, comparing the average current values recorded under the two groups of conditions, and alarming a system if the difference between the second group of average current values and the first group of average current values is higher than the preset alarm range difference; if the alarm range difference does not exceed the preset alarm range difference, prompting that the inspection is passed.
Specifically, the system alarm mode comprises sound alarm and prompt lamp alarm.
The invention has the beneficial effects that: the invention provides a virtual welding inspection circuit and a virtual welding inspection method for an electronic selective switch product, wherein the circuit comprises a current detection circuit module, a diode voltage doubling circuit module and a driving IC chip U7; the device comprises a drive IC, a diode voltage doubling circuit and a current detection circuit, wherein the current detection circuit comprises a sampling resistor, and when the detection of the selective switch is required to be carried out, a detection voltage of 72V is provided for the selective switch, and the voltage is controlled by software, so that the welding spots of the selective welding in the electronic selective switch are well checked, the accuracy of the selective welding detection is improved, and the labor force is saved.
Drawings
FIG. 1 is a schematic diagram of a cold solder inspection circuit for an electronic trigger switch product according to the present invention;
fig. 2 is a logic structure diagram of a method for inspecting cold solder joints of an electronic trigger switch product according to the present invention.
Description of the embodiments
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
The invention provides a virtual welding inspection circuit and a virtual welding inspection method for an electronic selective switch product, in the first aspect, the virtual welding inspection circuit for the electronic selective switch product comprises a current detection circuit module, a diode voltage doubling circuit module and a driving IC chip U7, as shown in figure 1; the diode voltage doubling circuit module is arranged at the VS port 6 of the driving IC chip and comprises a capacitor C27 and a voltage stabilizing diode D15 which are connected in series, the capacitor C27 is also connected with a voltage stabilizing diode D14 and a selector switch Q4 in parallel, and the voltage stabilizing diode D14 and the selector switch Q4 are connected to the node HVI1.
The output circuit is also protected by a current limiting device U24, the input end of the current limiting device U24 is connected with the power supply voltage VDD, and the output end of the current limiting device U is connected with the node HVI1. The diode voltage doubling circuit module is connected in series, a capacitor C27 and a voltage stabilizing diode D15 are connected in parallel, a capacitor C28 and a selector switch Q7 are connected in parallel, and the voltage stabilizing diode D15 and the capacitor C28 are connected to a node HV01.
The selector switches Q4 and Q7 are respectively connected to the HO port 7 and the LO port 5 of the driving IC chip U7, and diodes (D17 and D19) and shunt resistors (R7 and R8) which are connected in parallel are also respectively arranged on the connecting lines. Two capacitors (C29, C30) which are arranged in parallel are connected between the VCC port 1 and the grounding GND port 4 of the IC chip power supply U7, a zener diode D13 is connected between the VCC port 1 and the VB port 8, and the other end of the zener diode D13 is connected to the VS port 6.
The current detection circuit module comprises a chip U8, wherein an RS-port 8 of the chip U8 is connected with a power supply voltage VDD, an RS+ port 1 is communicated with a VCC port 2 and then is connected to the power supply voltage VDD, a power supply voltage port is arranged in the middle of the power supply voltage port, and a sampling resistor R10 is further arranged on a connecting circuit; the VCC port 2 is also connected with a capacitor C34, then connected with the GND port 4 in parallel and connected with the OUT port 5, and a resistor R12 and a capacitor C23 are also arranged on the connecting line.
On the other hand, the method for inspecting the cold joint of the electronic selective switch product is realized based on a cold joint inspection circuit of the electronic selective switch product, the logic of which is shown in fig. 2, and comprises the following steps:
setting delay one, applying 36V power supply voltage to a power supply voltage port, and collecting and recording the average current value of a line as a first group of average current value;
setting a delay II, providing 72V supply voltage for a supply voltage port by a diode voltage doubling circuit module, and collecting and recording the average current value of a line as a second group of average current value;
disconnecting the power supply voltage, presetting an alarm range difference, comparing the average current values recorded under the two groups of conditions, and alarming a system if the difference between the second group of average current values and the first group of average current values is higher than the preset alarm range difference; if the alarm range difference does not exceed the preset alarm range difference, prompting that the inspection is passed.
Specifically, the system alarm mode comprises sound alarm and prompt lamp alarm.
In this embodiment, as shown in fig. 1, a virtual solder detection circuit is formed by a driving IC, a diode voltage doubling circuit, and a current detection circuit, in which a sampling resistor is included in the current detection circuit, a pulse signal generated by the control system is input into the U7 from the SIN terminal, and the SSD is a chip select signal. When SSD is low, the output end of U7 outputs low level, and the VS end is unsettled. VDD voltage (36V) is switched by U24/D14/D15. When SSD is high, the pulse signals of the complementary HO and LO of U7, the VS end generates a pulse voltage with the peak value of VDD (36V). The pulse voltage at the VS terminal passes through a voltage doubling circuit consisting of C27\D14\D15\C38, so that the node of HVO1 generates a voltage of 2 times VDD (about 72V). U24 in the figure is a current limiting (current limiting value 120 ma) device, and provides protection function for the output circuit.
When the detection of the selector switch needs to be performed with the cold joint detection, the circuit provides a detection voltage of 72V for the selector switch, and the voltage is controlled by software.
In this embodiment, a high voltage detection process is added, wherein the high voltage detection process is implemented by applying 36V supply voltage of 20MS, recording average current value of the circuit, then applying 72V voltage of 250MS, recording average current value of a circuit, disconnecting the supply circuit, comparing the average current values recorded by 36V and 72V, when the average current of the latter is higher than the certain value of the former current, giving an audible alarm (quick call for 5 seconds) and an indicator lamp alarm (short circuit and signal failure are simultaneously quick flash for 5 seconds), otherwise, prompting that the detection is successful by the system, and the detection logic is shown in fig. 2.
The invention has the beneficial effects that: the invention provides a virtual welding inspection circuit and a virtual welding inspection method for an electronic selective switch product, wherein the circuit comprises a current detection circuit, a module, a diode voltage doubling circuit module and a driving IC chip U7; a detection circuit for cold joint is composed of a drive IC, a diode voltage doubling circuit and a current detection circuit, in which a sampling resistor is contained, and when cold joint detection is needed by detection of a selector switch, a detection voltage of 72V is provided for the selector switch, and the voltage is controlled by software, so that the cold joint welding point can be well checked.
The foregoing has shown and described the basic principles and features of the invention and the advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The virtual welding inspection circuit for the electronic selective switch product is characterized by comprising a current detection circuit module, a diode voltage doubling circuit module and a driving IC chip U7; the diode voltage doubling circuit module is arranged at the VS port 6 of the driving IC chip and comprises a capacitor C27 and a voltage stabilizing diode D15 which are connected in series, the capacitor C27 is also connected with a voltage stabilizing diode D14 and a selector switch Q4 in parallel, and the voltage stabilizing diode D14 and the selector switch Q4 are connected to the node HVI1.
2. The circuit of claim 1, further comprising a current limiter U24 for protecting the output circuit, wherein the current limiter U24 has an input terminal connected to the supply voltage VDD and an output terminal connected to the node HVI1.
3. The circuit of claim 1, wherein the diode voltage doubling circuit module is connected in series with a capacitor C27 and a zener diode D15, and is further connected in parallel with a capacitor C28 and a selector switch Q7 across the diode voltage doubling circuit module, and the zener diode D15 and the capacitor C28 are connected to a node HV01.
4. A cold joint inspection circuit for electronic circuit breaker products according to claim 3, characterized in that the switches Q4 and Q7 are connected to the HO port 7 and LO port 5 of the driving IC chip U7, respectively, and the connection lines are provided with diodes (D17, D19) and shunt resistors (R7, R8) connected in parallel, respectively.
5. The circuit according to claim 1, wherein two capacitors (C29, C30) arranged in parallel are connected between the VCC port 1 and the ground GND port 4 of the IC chip power supply U7, a zener diode D13 is connected between the VCC port 1 and the VB port 8, and the other end of the zener diode D13 is connected to the VS port 6.
6. The circuit for inspecting cold joint of electronic selective switch product according to claim 1, wherein the current detecting circuit module comprises a chip U8, wherein an RS-port 8 of the chip U8 is connected with a power supply voltage VDD, an rs+ port 1 is connected with a VCC port 2 and then is connected with the power supply voltage VDD, a power supply voltage port is arranged in the middle of the power supply voltage port, and a sampling resistor R10 is further arranged on the connecting circuit; the VCC port 2 is also connected with a capacitor C34, then connected with the GND port 4 in parallel and connected with the OUT port 5, and a resistor R12 and a capacitor C23 are also arranged on the connecting line.
7. An electronic flip-flop product cold joint inspection method based on the electronic flip-flop product cold joint inspection circuit implementation of any one of claims 1-6, characterized by comprising the following steps:
setting delay one, applying 36V power supply voltage to a power supply voltage port, and collecting and recording the average current value of a line as a first group of average current value;
setting a delay II, providing 72V supply voltage for a supply voltage port by a diode voltage doubling circuit module, and collecting and recording the average current value of a line as a second group of average current value;
disconnecting the power supply voltage, presetting an alarm range difference, comparing the average current values recorded under the two groups of conditions, and alarming a system if the difference between the second group of average current values and the first group of average current values is higher than the preset alarm range difference; if the alarm range difference does not exceed the preset alarm range difference, prompting that the inspection is passed.
8. The method for inspecting cold solder joints of electronic trigger switch according to claim 7, wherein the system alarm means comprises an audible alarm and a warning light alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310810877.6A CN116893335A (en) | 2023-07-04 | 2023-07-04 | Electronic selector switch product cold joint inspection circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310810877.6A CN116893335A (en) | 2023-07-04 | 2023-07-04 | Electronic selector switch product cold joint inspection circuit and method |
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| Publication Number | Publication Date |
|---|---|
| CN116893335A true CN116893335A (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310810877.6A Pending CN116893335A (en) | 2023-07-04 | 2023-07-04 | Electronic selector switch product cold joint inspection circuit and method |
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| CN (1) | CN116893335A (en) |
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|---|---|---|---|---|
| CN1847866A (en) * | 2005-09-29 | 2006-10-18 | 华为技术有限公司 | False pin soldering test device and method |
| CN103499758A (en) * | 2013-08-21 | 2014-01-08 | 深圳市晶导电子有限公司 | Audion cold solder joint judgment method and device thereof |
| CN204347203U (en) * | 2014-12-12 | 2015-05-20 | 上海康震电源科技有限公司 | Aging circuit test machine |
| CN209525422U (en) * | 2018-12-18 | 2019-10-22 | 惠州市蓝微电子有限公司 | A kind of test circuit |
| CN111308396A (en) * | 2018-12-12 | 2020-06-19 | 宁德时代新能源科技股份有限公司 | Insufficient solder joint detection circuit and method |
| CN213987248U (en) * | 2021-02-26 | 2021-08-17 | 松原一凡石油技术有限公司 | Switch and control system are sent out to branch shower nozzle selection |
| CN215498400U (en) * | 2021-06-17 | 2022-01-11 | 成都华远电器设备有限公司 | Double-power-supply type arc welding power supply input voltage detection device |
| CN114966454A (en) * | 2022-06-30 | 2022-08-30 | 章鱼博士智能技术(上海)有限公司 | Method, system, equipment and storage medium for detecting virtual connection of battery sampling line |
| CN115308646A (en) * | 2022-08-30 | 2022-11-08 | 苏州浪潮智能科技有限公司 | Rosin joint detection device |
-
2023
- 2023-07-04 CN CN202310810877.6A patent/CN116893335A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847866A (en) * | 2005-09-29 | 2006-10-18 | 华为技术有限公司 | False pin soldering test device and method |
| CN103499758A (en) * | 2013-08-21 | 2014-01-08 | 深圳市晶导电子有限公司 | Audion cold solder joint judgment method and device thereof |
| CN204347203U (en) * | 2014-12-12 | 2015-05-20 | 上海康震电源科技有限公司 | Aging circuit test machine |
| CN111308396A (en) * | 2018-12-12 | 2020-06-19 | 宁德时代新能源科技股份有限公司 | Insufficient solder joint detection circuit and method |
| CN209525422U (en) * | 2018-12-18 | 2019-10-22 | 惠州市蓝微电子有限公司 | A kind of test circuit |
| CN213987248U (en) * | 2021-02-26 | 2021-08-17 | 松原一凡石油技术有限公司 | Switch and control system are sent out to branch shower nozzle selection |
| CN215498400U (en) * | 2021-06-17 | 2022-01-11 | 成都华远电器设备有限公司 | Double-power-supply type arc welding power supply input voltage detection device |
| CN114966454A (en) * | 2022-06-30 | 2022-08-30 | 章鱼博士智能技术(上海)有限公司 | Method, system, equipment and storage medium for detecting virtual connection of battery sampling line |
| CN115308646A (en) * | 2022-08-30 | 2022-11-08 | 苏州浪潮智能科技有限公司 | Rosin joint detection device |
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