CN215725492U

CN215725492U - Control box

Info

Publication number: CN215725492U
Application number: CN202121919836.3U
Authority: CN
Inventors: 刘洪�; 蒋君博
Original assignee: Beijing Huanan Core Technology Co ltd
Current assignee: Zhejiang Huaxin Guochuang Technology Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-01
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a control box, and belongs to the technical field of detonation. The control box comprises an MCU, a current detection module, a signal receiving module, a power management module and a signal sending module, wherein the current detection module is used for connecting the MCU, and the current detection module is used for detecting output current; the signal receiving module is used for connecting the MCU and receiving a first communication signal output by the electronic detonator; the signal sending module is used for being respectively connected with the MCU and the power management module; the MCU is used for dynamically adjusting the size and polarity of a voltage signal output by the power supply management model according to the output current and the first communication signal, and controlling the signal sending module to output an electric signal and a second communication signal so as to detonate the electronic detonator. The control box can well adjust the size of the output electric signal in a self-adaptive voltage adjusting mode, improves the sending and receiving of the signal and has high communication reliability.

Description

Control box

Technical Field

The utility model relates to the technical field of detonation, in particular to a control box for networking and detonation of an electronic detonator.

Background

At present, when the control box performs data interaction with an electronic detonator, the size of an output electric signal cannot be adjusted frequently, and the problem of low communication reliability exists frequently, so how to provide the control box can better adjust the size of the output electric signal, improve the sending and receiving of signals, and improve the communication reliability becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a control box which can adjust the size of an output electric signal and a communication signal and improve the communication reliability.

The control box according to the present invention comprises:

MCU；

the power management module is connected with the MCU;

the current detection module is used for connecting the MCU and detecting output current;

the signal receiving module is used for connecting the MCU and receiving a first communication signal output by the electronic detonator;

the signal transmitting module is used for being respectively connected with the MCU and the power management module;

the MCU is used for changing the size and polarity of a voltage signal output by the power management module according to the output current and the first communication signal, and is also used for controlling the signal sending module to output the voltage signal and the second communication signal so as to detonate the electronic detonator.

The control box provided by the embodiment of the utility model has at least the following beneficial effects: the control box detects the magnitude of output current through the current detection module, the signal receiving module receives a first communication signal output by the electronic detonator, the MCU receives the output current and the first communication signal and changes the magnitude of an electric signal output by the power management module according to the output current and the first communication signal, and simultaneously controls the signal sending module to output the electric signal and a second communication signal.

According to some embodiments of the utility model, the control box further comprises a power on/off module, the power management module comprising:

the high-voltage power supply unit is used for connecting the startup and shutdown module, providing energy required by detonating the electronic detonator, and boosting the voltage output by the battery after a preset operation process to output a high-voltage electric signal;

the digital power supply unit is used for respectively connecting the power on/off module and the MCU, and the digital power supply unit is used for outputting a digital electric signal according to a received power on instruction;

the analog power supply unit is used for connecting the power-on and power-off module and outputting an analog electric signal according to a received power-on instruction;

the power on/off module is respectively connected with the battery and the power management module and is used for controlling the battery to be disconnected with the power management module when the control box is in a power off state; and the power supply management module is also used for connecting the battery with the power supply management module through the power on/off module when the control box is in a starting-up state.

According to some embodiments of the utility model, the control box further comprises:

the voltage switching module is used for being connected with the signal sending module, the analog power supply unit and the high-voltage power supply unit respectively, and is used for controlling the output of the analog electric signals and controlling the output of the high-voltage electric signals.

the battery is used for being connected with the power on/off module and being connected with the power management module when the control box is in a power-on state;

a charging module for connecting the battery;

the charging module is used for charging the battery, and the battery is used for supplying power to the power management module.

According to some embodiments of the utility model, the signal transmission module comprises:

the analog signal sending unit is connected with the analog power supply unit of the power supply management module;

the first end of the first resistor is connected with the analog signal sending unit, and the second end of the first resistor is grounded;

the drain electrode of the MOS tube is respectively connected with the first end of the first resistor and the analog signal sending unit, the source electrode of the MOS tube is respectively connected with the second end of the first resistor and the ground, and the MOS tube is in short connection with the first resistor when used for sending signals.

According to some embodiments of the utility model, the signal receiving module comprises:

a first sampling resistor;

a first input end of the differential amplifier is connected with a first end of the first sampling resistor, and a second input end of the differential amplifier is connected with a second end of the sampling resistor and the ground;

the input end of the second-order active band-pass filter is connected with the output end of the differential amplifier;

a first operational amplifier, wherein a first input end of the first operational amplifier is connected with an output end of the second-order active band-pass filter;

a first input end of the second operational amplifier is connected with an output end of the second-order active band-pass filter;

the first comparator is connected with the output end of the first operational amplifier;

the input end of the inverter is connected with the output end of the second operational amplifier;

the second comparator is connected with the output end of the inverter;

the first analog switch is respectively connected with the first operational amplifier and the second operational amplifier and is used for forming an adjustable gain amplifier through the first analog switch, the first operational amplifier and the second operational amplifier.

According to some embodiments of the utility model, the current detection module comprises:

a second analog switch;

the low-voltage current detection unit comprises a low-voltage sampling resistor, a first preamplifier and a first amplifier, wherein the first end of the low-voltage sampling resistor is connected with the input end of the first preamplifier, the second end of the low-voltage sampling resistor is grounded, the output end of the first preamplifier is connected with the first end of the second analog switch, and the first amplifier is connected with the second end of the second analog switch;

the high-voltage current detection unit comprises a high-voltage sampling resistor, a second preamplifier and a second amplifier, wherein the first end of the high-voltage sampling resistor is connected with the input end of the second preamplifier, the second end of the high-voltage sampling resistor is grounded, the output end of the second preamplifier is connected with the first end of the second analog switch, and the second amplifier is connected with the second end of the second analog switch.

According to some embodiments of the present invention, the control box further comprises a port protection module, the port protection module is respectively connected to the current detection module, the signal receiving module and the signal sending module, and the port protection module comprises:

a first capacitor;

a second capacitor;

a first end of a first coil of the common mode inductor is connected with a first end of the first capacitor, and a first end of a second coil of the common mode inductor is connected with a first end of the second capacitor;

a first end of the first magnetic bead is connected with a second end of the first coil of the common-mode inductor;

a first end of the second magnetic bead is connected with a second end of a second coil of the common-mode inductor;

the cathode of the first TVS tube is connected with the second end of the first magnetic bead, and the anode of the first TVS tube is grounded;

a cathode of the second TVS tube is connected with a second end of the second magnetic bead, and an anode of the second TVS tube is grounded;

the first end of the relay is connected with the cathode of the first TVS tube and the second end of the first magnetic bead respectively, and the second end of the relay is connected with the cathode of the second TVS tube and the second end of the second magnetic bead respectively.

the human-computer interaction module is connected with the MCU and used for acquiring an operation instruction and representing the working state of the control box according to an output instruction of the MCU.

and the auxiliary function module is connected with the MCU and used for the MCU to perform data interaction with external equipment through the auxiliary function module.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic structural diagram of a control box according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the port protection module of FIG. 1;

FIG. 3 is a schematic structural diagram of the signal transmission module in FIG. 1;

fig. 4 is a schematic structural diagram of the signal receiving module in fig. 1;

fig. 5 is a schematic structural diagram of the current detection module in fig. 1.

Reference numerals: 101. MCU; 102. a current detection module; 103. a signal receiving module; 104. a signal transmitting module; 105. a port protection module; 106. a voltage switching module; 107. a power management module; 108. a high voltage power supply unit; 109. an analog power supply unit; 110. a digital power supply unit; 111. a power on/off module; 112. a battery; 113. a charging module; 114. a USB interface; 115. a FLASH module; 116. a human-computer interaction module; 117. an auxiliary function module; 310. a first communication power supply; 320. a second communication power supply; 330. an analog signal transmitting unit; 410. a differential amplifier; 420. a second order active band pass filter; 430. a first operational amplifier; 440. a first comparator; 450. a second operational amplifier; 460. an inverter; 470. a second comparator; 480. a first analog switch; 510. a second analog switch; 520. a first preamplifier; 530. a first amplifier; 540. a second preamplifier; 550. a second amplifier.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, the control box of the embodiment of the present invention includes an MCU101, a current detection module 102, a signal receiving module 103, a signal sending module 104, and a power management module 107, where the current detection module 102 is used to connect the MCU101, and the current detection module 102 is used to detect an output current; the power management module 107 is connected with the MCU101, the signal receiving module 103 is used for connecting the MCU101, and the signal receiving module 103 is used for receiving a first communication signal output by the electronic detonator; the signal transmitting module 104 is used for respectively connecting the MCU101 and the power management module 107; the MCU101 is configured to control the signal transmitting module 104 to output the electrical signal and the second communication signal according to the output current and the first communication signal. When the control box performs data interaction with an electronic detonator, the current detection module 102 detects output current, the signal receiving module 103 receives a first communication signal output by the electronic detonator, the MCU101 changes the magnitude and polarity of a voltage signal output by the power management module 107 by receiving the output current and the first communication signal, and controls the signal sending module 104 to output the voltage signal and a second communication signal to detonate the electronic detonator, so that the magnitude and the communication signal of the output electric signal can be well adjusted, the sending and receiving of the signal are improved, and the communication reliability is improved.

Referring to fig. 1 and 3, in some embodiments, the control box further includes a power on/off module 111, the power management module 107 includes a high-voltage power supply unit 108, a digital power supply unit 110, and an analog power supply unit 109, the high-voltage power supply unit 108 is configured to connect the power on/off module 111, and the high-voltage power supply unit 108 is configured to provide energy required for initiating the electronic detonator, and is further configured to boost a voltage output by the battery after a preset operation procedure, and output a high-voltage electrical signal; the digital power supply unit 110 is used for respectively connecting the power on/off module 111 and the MCU101, and the digital power supply unit 110 is used for outputting a digital electrical signal according to a received power on instruction; the analog power supply unit 109 is used for connecting the power on/off module 111, and the analog power supply unit 109 is used for outputting an analog electrical signal according to the received power on instruction. The power on/off module 111 is respectively connected to the battery 112 and the power management module 107, and is configured to control the battery 112 to be disconnected from the power management module 107 when the control box is in a power off state; and is also used for connecting the battery 112 with the power management module 107 through the power on/off module 111 when the control box is in the power-on state. The on-off module 111 can conveniently control the control box to be opened or closed according to actual conditions. The digital power supply unit 110 is mainly used for supplying power to a digital circuit part inside the control box, and mainly comprises an MCU, a FLASH module 115, a 485 communication unit and the like. Because the instantaneous working current peak value of the code scanning head is large, in order to improve the power supply reliability, the power supply management module 107 further comprises a code scanning power supply unit, and the code scanning power supply unit can supply power for the scanning head independently, so that the normal use of code scanning equipment is ensured. The output of the electrical signal can be conveniently controlled by the high voltage power supply unit 108, the digital power supply unit 110, and the analog power supply unit 109.

It should be noted that the high-voltage power supply unit 108 includes a high-voltage lock and a DC-DC boost circuit, and the output of the high-voltage signal is controlled by the high-voltage lock, and the output can be adjusted by adapting to the load, so that the safety and stability of the control box can be improved. The analog power supply unit 109 includes a communication power supply and an operational amplifier power supply, wherein the communication power supply includes a first communication power supply 310 and a second communication power supply 320, the first communication power supply 310 includes a DC-DC boost circuit, the second communication power supply 320 includes an LDO buck circuit, and different electrical signals can be improved by different communication power supplies, so as to improve the reliability of signal output. The first communication power supply adopts a self-adaptive load design and dynamically adjusts the output of the port. The operational amplifier power supply comprises a first operational amplifier power supply and a second operational amplifier power supply, wherein the first operational amplifier power supply comprises an LDO (low dropout regulator) voltage reduction circuit, the second operational amplifier power supply comprises a charge pump, and the ripple of the operational amplifier power supply is smaller and more beneficial to the receiving of small signals, so that an LDO voltage reduction mode (namely, the mode of boosting the voltage and reducing the voltage again) is adopted, the power ripple is very small, and the signal receiving reliability of the control box is improved.

Referring to fig. 1, in some embodiments, the control box further includes a voltage switching module 106, the voltage switching module 106 is configured to be connected to the signal sending module 104, the analog power supply unit 109, and the high voltage power supply unit 108, respectively, and the voltage switching module 106 is configured to control output of the analog electrical signal and also control output of the high voltage electrical signal. The voltage switching module 106 can control the output of the analog electrical signal and the high-voltage electrical signal, so that the signal sending module 104 can receive the more accurate analog electrical signal and the high-voltage electrical signal, and the signal interaction reliability of the control box is improved.

Referring to fig. 1, in some embodiments, the control box further includes a battery 112 and a charging module 113, wherein the battery 112 is used for connecting the power on/off module 111; the charging module 113 is used for connecting the battery 112; the charging module 113 is used for charging the battery 112, and the battery 112 is used for supplying power to the power management module 107. The battery 112 and the charging module 113 can provide electric energy for the normal operation of the control box, and the working stability of the control box is improved.

Referring to fig. 1, in some embodiments, the control box further includes a human-computer interaction module 116, the human-computer interaction module 116 is connected to the MCU101, and the human-computer interaction module 116 is configured to obtain an operation instruction and further configured to represent a working state of the control box according to an output instruction of the MCU 101. The human-computer interaction module 116 includes a vibration unit, a sound unit, a key unit, a liquid crystal panel, and the like, and the human-computer interaction module 116 can output the working state in various ways, for example, the working state of the control box is represented on the liquid crystal panel according to the output instruction of the MCU 101; according to the working state, the control box is controlled in modes of inputting control instructions through keys and the like, and the reliability is high.

Referring to fig. 1, in some embodiments, the control box further includes a USB interface 114 and a FLASH module 115, the USB interface 114 enables an external USB device to be accessed more conveniently, and the FLASH module 115 can store the working state of the control box, log information of the operation process, detonation record information of the electronic detonator, and the like.

Referring to fig. 1, in some embodiments, the control box further includes an auxiliary function module 117, and the auxiliary function module 117 is connected to the MCU101, and is used for data interaction between the MCU101 and an external device through the auxiliary function module 117. The auxiliary function module 117 may include, but is not limited to, a code scanning unit, a 485 communication unit, a wifi communication unit, a bluetooth communication unit, and the like. The MCU101 can conveniently communicate with external equipment through the auxiliary function module 117, so that remote control or near-end control of the control box is realized, the reliability is high, the requirements of field use are met, and functions of code scanning, detonator registration, safety supervision and the like are realized.

Referring to fig. 1 and 2, in some embodiments, the control box further includes a port guard module 105, and the port guard module 105 is connected to the current detection module 102, the signal receiving module 103, and the signal sending module 104, respectively. The port protection module 105 comprises a first capacitor C1, a second capacitor C2, a common-mode inductor L1, a first magnetic bead L2, a second magnetic bead L3, a first TVS tube D1, a second TVS tube D2 and a relay K1, wherein a first end of a first coil of the common-mode inductor L1 is connected with a first end of a first capacitor C1, and a first end of a second coil of the common-mode inductor L1 is connected with a first end of a second capacitor C2; the first end of the first magnetic bead L2 is connected with the second end of the first coil of the common-mode inductor L1; the first end of the second magnetic bead L3 is connected with the second end of the second coil of the common-mode inductor L1; the cathode of the first TVS tube D1 is connected to the second end of the first magnetic bead L2, and the anode of the first TVS tube D1 is grounded; the cathode of the second TVS tube D2 is connected to the second end of the second magnetic bead L3, and the anode of the second TVS tube D2 is grounded; a first end of the relay K1 is connected to the cathode of the first TVS tube D1 and the second end of the first magnetic bead L2, respectively, and a second end of the relay K1 is connected to the cathode of the second TVS tube D2 and the second end of the second magnetic bead L3, respectively. The port protection module 105 can further protect the output/input of signals, protect the signal interaction of the control box, and improve the working reliability of the control box.

Referring to fig. 3, in some embodiments, the signal transmitting module 104 includes an analog signal transmitting unit 330, a first resistor R1 and a MOS transistor Q1, where the analog signal transmitting unit 330 is connected to the analog power supply unit 109 of the power management module 107; the first end of the first resistor R1 is connected with the analog signal sending unit 330, and the second end of the first resistor R1 is grounded; the drain of the MOS transistor Q1 is connected to the first end of the first resistor R1 and the analog signal sending unit 330, the source of the MOS transistor Q1 is connected to the second end of the first resistor R1 and ground, and the MOS transistor Q1 is used for sending signals and is short-circuited with the first resistor R1. The second communication signal transmitted by the signal transmission module 104 is substantially a differential voltage signal, and the analog signal transmission unit 330 can generate the differential voltage signal. The MOS transistor Q1 can switch the access state of the first resistor R1 by changing the conduction state, thereby realizing time-sharing sampling of signals, improving the quality of signal transmission and increasing the communication distance.

Referring to fig. 4, in some embodiments, the signal receiving module 103 includes a first sampling resistor R2, a differential amplifier 410, a second-order active band-pass filter 420, a first operational amplifier 430, a second operational amplifier 450, a first comparator 440, an inverter 460, a second comparator 470, and a first analog switch 480, a first input terminal of the differential amplifier 410 is connected to a first terminal of the first sampling resistor R2, and a second input terminal of the differential amplifier 410 is connected to a second terminal of the sampling resistor and ground; the input end of the second-order active band-pass filter 420 is connected with the output end of the differential amplifier 410; a first input end of the first operational amplifier 430 is connected with an output end of the second-order active band-pass filter 420; a first input end of the second operational amplifier 450 is connected to an output end of the second-order active band-pass filter 420; the first comparator 440 is connected to the output terminal of the first operational amplifier 430; the input end of the inverter 460 is connected to the output end of the second operational amplifier 450; the second comparator 470 is connected to the output of the inverter 460; the first analog switch 480 is connected to the first operational amplifier 430 and the second operational amplifier 450, respectively, and is configured to form an adjustable gain amplifier through the first analog switch 480, the first operational amplifier 430 and the second operational amplifier 450. In order to facilitate receiving of the first current signal fed back to the electronic detonator, the voltage switching module 106 may use a smaller communication power supply to supply power and switch a suitable communication power supply, so that the signal receiving module 103 may more conveniently receive the first communication signal output by the electronic detonator, thereby improving the reliability of signal receiving.

Referring to fig. 5, in some embodiments, the current detection module 102 includes a second analog switch 510, a low voltage current detection unit, and a high voltage current detection unit, the low voltage current detection unit includes a low voltage sampling resistor R3, a first preamplifier 520, and a first amplifier 530, a first end of the low voltage sampling resistor R3 is connected to an input end of the first preamplifier 520, a second end of the low voltage sampling resistor R3 is grounded, an output end of the first preamplifier 520 is connected to a first end of the second analog switch 510, and the first 530 is connected to a second end of the second analog switch 510, wherein the second amplifier 530 is a high gain small-scale amplifier. The high-voltage current detection unit comprises a high-voltage sampling resistor R4, a second preamplifier 540 and a second controllable gain amplifier 550, wherein the first end of the high-voltage sampling resistor R4 is connected with the input end of the second preamplifier 540, the second end of the high-voltage sampling resistor R4 is grounded, the output end of the second preamplifier 540 is connected with the first end of a second analog switch 510, the second amplifier 550 is connected with the second end of the second analog switch 510, and the second amplifier 550 is a low-gain large-range amplifier. Different currents can be collected and detected through the second analog switch 510, the low-voltage current detection unit and the high-voltage current detection unit.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. Control box, its characterized in that includes:

MCU；

the power management module is connected with the MCU;

2. The control box of claim 1, further comprising a power on/off module, the power management module comprising:

3. The control box according to claim 2, further comprising:

4. The control box according to claim 2, further comprising:

a charging module for connecting the battery;

5. The control box according to claim 1, wherein the signal transmission module comprises:

the drain electrode of the MOS tube is respectively connected with the first end of the first resistor and the analog signal sending unit, and the source electrode of the MOS tube is respectively connected with the second end of the first resistor and grounded; and when the MOS tube is used for sending a signal, the MOS tube is short-circuited with the first resistor.

6. The control box according to claim 1, wherein the signal receiving module comprises:

a first sampling resistor;

the second comparator is connected with the output end of the inverter;

7. The control box according to claim 1, wherein the current detection module comprises:

a second analog switch;

8. The control box according to claim 1, further comprising a port protection module, the port protection module being respectively connected to the current detection module, the signal receiving module and the signal transmitting module, the port protection module comprising:

a first capacitor;

a second capacitor;

9. The control box according to claim 1, further comprising:

10. The control box according to any one of claims 1 to 9, characterized by further comprising: